UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR/A CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-08081 Name of Fund: BlackRock MuniHoldings Fund, Inc. Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Robert C. Doll, Jr., Chief Executive Officer, BlackRock MuniHoldings Fund, Inc., 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011 Registrant's telephone number, including area code: (609) 282-2800 Date of fiscal year end: 04/30/06 Date of reporting period: 05/01/05 - 04/30/06 Item 1 - Report to Stockholders Annual Reports (As Restated) April 30, 2006 MuniHoldings Fund, Inc. MuniHoldings Insured Fund, Inc. (BULL Logo) Merrill Lynch Investment Managers www.mlim.ml.com Mercury Advisors A Division of Merrill Lynch Investment Managers www.mercury.ml.com MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. seek to provide shareholders with current income exempt from federal income taxes by investing primarily in portfolios of long-term, investment grade municipal obligations the interest on which, in the opinion of bond counsel to the issuer, is exempt from federal income taxes. Under normal circumstances, MuniHoldings Insured Fund, Inc. invests at least 80% of its total assets in municipal bonds that are covered by insurance. These reports, including the financial information herein, are transmitted to shareholders of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. for their information. This is not a prospectus. Past performance results shown in these reports should not be considered a representation of future performance. The Funds have leveraged their Common Stock and intend to remain leveraged by issuing Preferred Stock to provide the Common Stock shareholders with potentially higher rates of return. Leverage creates risks for Common Stock shareholders, including the likelihood of greater volatility of net asset value and market price of shares of the Common Stock, and the risk that fluctuations in the short-term dividend rates of the Preferred Stock may affect the yield to Common Stock shareholders. Statements and other information herein are as dated and are subject to change. A description of the policies and procedures that the Funds use to determine how to vote proxies relating to portfolio securities is available (1) without charge, upon request, by calling toll-free 1-800-637-3863; (2) on www.mutualfunds.ml.com; and (3) on the Securities and Exchange Commission's Web site at http://www.sec.gov. MuniHoldings Fund, Inc. MuniHoldings Insured Fund, Inc. Box 9011 Princeton, NJ 08543-9011 (GO PAPERLESS... Logo) It's Fast, Convenient, & Timely! To sign up today, go to www.icsdelivery.com/live. MuniHoldings Fund, Inc. MuniHoldings Insured Fund, Inc. The financial statements and financial highlights in this report have been restated as described in Note 6 to the financial statements. Other information in this report affected by the restatement has been revised. Announcement to Shareholders On February 15, 2006, BlackRock, Inc. ("BlackRock") and Merrill Lynch & Co., Inc. ("Merrill Lynch") entered into an agreement to contribute Merrill Lynch's investment management business, Merrill Lynch Investment Managers, L.P. and certain affiliates (including Fund Asset Management, L.P. and Merrill Lynch Investment Managers International Limited), to BlackRock to create a new independent company that will be one of the world's largest asset management firms with over $1 trillion in assets under management (based on combined assets under management as of March 31, 2006). The transaction is expected to close in the third quarter of 2006, at which time the new company will operate under the BlackRock name. The Fund's Board of Directors has approved a new investment advisory agreement with BlackRock Advisors, Inc. or its successor ("BlackRock Advisors") on substantially the same terms and for the same advisory fee as the current investment advisory agreement with the Investment Adviser. If the new agreement is approved by the Fund's shareholders, BlackRock Advisors is expected to become the Fund's investment adviser upon the closing of the transaction between Merrill Lynch and BlackRock. Quality Profiles as of April 30, 2006 (As Restated. See Note 6) Percent of MuniHoldings Fund, Inc. by Total S&P/Moody's Rating Investments AAA/Aaa 35.2% AA/Aa 7.3 A/A 15.7 BBB/Baa 16.7 BB/Ba 2.1 B/B 1.7 CCC/Caa 1.5 NR 18.3 Other++ 1.5 ++ Includes portfolio holdings in short-term investments and variable rate demand notes. Percent of MuniHoldings Insured Fund, Inc. by Total S&P/Moody's Rating Investments AAA/Aaa 92.0% AA/Aa 3.0 A/A 1.7 BBB/Baa 2.5 Other++ 0.8 ++ Includes portfolio holdings in short-term investments and variable rate demand notes. Dividend Policy The Funds' dividend policy is to distribute all or a portion of their net investment income to their shareholders on a monthly basis. In order to provide shareholders with a more stable level of dividend distributions, the Funds may at times pay out less than the entire amount of net investment income earned in any particular month and may at times in any particular month pay out such accumulated but undistributed income in addition to net investment income earned in that month. As a result, the dividends paid by the Funds for any particular month may be more or less than the amount of net investment income earned by the Funds during such month. The Funds' current accumulated but undistributed net investment income, if any, is disclosed in the Statement of Net Assets, which comprises part of the financial information included in these reports. ANNUAL REPORTS APRIL 30, 2006 A Letter From the President Dear Shareholder You may be aware that changes are on the horizon at Merrill Lynch Investment Managers ("MLIM"). On February 15, 2006, Merrill Lynch announced plans to combine the firm's investment advisory business, including MLIM, with another highly regarded investment manager - BlackRock, Inc. ("BlackRock"). We believe this merger of asset management strength will benefit our investors. MLIM is a leading investment management organization with over $576 billion in assets under management globally and 2,757 employees in 17 countries. It offers over 100 investment strategies in vehicles ranging from mutual funds to institutional portfolios. BlackRock is one of the largest publicly traded investment management firms in the United States with $463.1 billion in assets under management and 1,839 employees. It manages assets on behalf of institutional and individual investors worldwide through a variety of equity, fixed income, liquidity and alternative investment products. At the completion of the transaction, which is expected in the third quarter of this year, the resultant firm will be a top-10 investment manager worldwide with over $1 trillion in assets under management.* The combined company will provide a wider selection of high-quality investment solutions across a range of asset classes and investment styles. MLIM and BlackRock possess complementary capabilities that together create a well-rounded organization uniting some of the finest money managers in the industry. At the same time, the firms share similar values and beliefs - they are focused on delivering excellence on behalf of clients, and both make investment performance their single most important mission. In short, the merger only reinforces our commitment to shareholders. Most of MLIM's investment products - including mutual funds, separately managed accounts, annuities and variable insurance funds - eventually will carry the "BlackRock" name. As a shareholder in one or more MLIM-advised mutual funds, you will receive a proxy package in the coming weeks in connection with this transaction. After you receive this information, should you have any questions or concerns, do not hesitate to contact your financial advisor. As always, we thank you for entrusting us with your investment assets, and we look forward to continuing to serve your investment needs with even greater strength and scale as the new BlackRock. Sincerely, (Robert C. Doll, Jr.) Robert C. Doll, Jr. President and Chief Investment Officer Merrill Lynch Investment Managers * $1.039 trillion in assets under management as of March 31, 2006. Data, including assets under management, are as of March 31, 2006. ANNUAL REPORTS APRIL 30, 2006 A Discussion With Your Funds' Portfolio Manager The Funds ended the period fully invested and with an overall neutral market posture. We remain focused on generating an attractive level of tax-exempt income for our shareholders. Describe the recent market environment relative to municipal bonds. Long-term bond yields rose sharply during the 12-month period, with much of the increase occurring in March and April 2006. Bond prices, which move opposite yields, declined. Bond prices were pressured as investors focused on solid economic growth, both globally and in the United States, and renewed inflationary pressures deriving from rising commodity prices. The Federal Reserve Board (the Fed) continued to raise short-term interest rates at each of its meetings during the past year, bringing the federal funds target rate to 4.75% at period-end, and to 5% with another interest rate hike on May 10. In response, the yield curve continued to flatten, with short-term interest rates rising more than longer-term interest rates. Over the past 12 months, 30-year U.S. Treasury bond yields rose 66 basis points (.66%) to 5.17% and 10-year U.S. Treasury note yields rose 86 basis points to 5.07%, the highest level since May 2002. While municipal bond yields also rose sharply in recent months, a significant decline in new issuance allowed municipal bond prices to decline much less than their taxable counterparts. As measured by Municipal Market Data, yields on AAA-rated issues maturing in 30 years rose 16 basis points to 4.53% while yields on AAA-rated issues maturing in 10 years rose 51 basis points to 4.08%. For the most part, the recent outperformance of the tax-exempt market has been fostered by a dramatic decline in new bond issuance so far in 2006. In 2005, more than $408 billion in new long-term tax-exempt bonds was underwritten, a new annual record and an increase of over 13% versus 2004. Over the past six- month and three-month periods, new issue volume has declined 8.6% and 24%, respectively, compared to the corresponding periods a year ago. The tax-exempt market has continued to enjoy strong investor demand. As reported by the Investment Company Institute, long-term municipal bond funds received net new monies of $5.0 billion in 2005 - a sharp reversal from the $3.7 billion outflow in 2004. During the first quarter of 2006, tax-exempt mutual funds received over $9.3 billion, slightly higher than the $8.9 billion inflow during the same period in 2005. Recent statistics from AMG Data Services indicate that, thus far in 2006, average weekly cash flows into long- term municipal bond funds averaged over $300 million, a significant improvement from the weekly average of $65 million in December 2005. Looking ahead, the fundamentals for the tax-exempt bond market appear favorable, and continued positive cash flows are anticipated. Given their attractive yields relative to comparable U.S. Treasury bonds, and the prospects for reduced issuance in 2006, we believe municipal bonds could enjoy solid results in the coming months. MuniHoldings Fund, Inc. How did the Fund perform during the fiscal year? For the 12-month period ended April 30, 2006, the Common Stock of MuniHoldings Fund, Inc. had net annualized yields of 6.58% and 6.56%, based on a year-end per share net asset value of $16.14 and a per share market price of $16.20, respectively, and $1.062 per share income dividends. Over the same period, the total investment return on the Fund's Common Stock was +5.69%, based on a change in per share net asset value from $16.31 to $16.14, and assuming reinvestment of all distributions. The Fund's total return, based on net asset value, exceeded the +3.86% average return of the Lipper General Municipal Debt Funds (Leveraged) category for the 12-month period. (Funds in this Lipper category invest primarily in municipal debt issues rated in the top four credit-rating categories. These funds can be leveraged via use of debt, preferred equity and/or reverse repurchase agreements.) Overall, the municipal market performed fairly well in this period of rising interest rates. The yield curve continued to flatten as the long end rallied slightly while the short end underperformed. Against this backdrop, the Fund benefited from its limited exposure to securities with shorter effective maturities, generally eight years - 15 years. Also contributing to performance was the portfolio's ample exposure to lower-rated investment quality and non- investment grade securities (that is, spread product). As has been the case for the past 24 months, credit spreads continued to narrow in the municipal market as strong demand for incremental yield met with an extremely low supply of higher-yielding securities. This led to strong outperformance for spread sectors. ANNUAL REPORTS APRIL 30, 2006 For the six-month period ended April 30, 2006, the total investment return on the Fund's Common Stock was +3.70%, based on a change in per share net asset value from $16.06 to $16.14, and assuming reinvestment of all distributions. For a description of the Fund's total investment return based on a change in the per share market value of the Fund's Common Stock (as measured by the trading price of the Fund's shares on the New York Stock Exchange), and assuming reinvestment of distributions, please refer to the Financial Highlights section of this report. As a closed-end fund, the Fund's shares may trade in the secondary market at a premium or discount to the Fund's net asset value. As a result, total investment returns based on changes in the market value of the Fund's Common Stock can vary significantly from total investment returns based on changes in the Fund's net asset value. What changes were made to the portfolio during the period? Broadly speaking, we moved the portfolio from a slightly defensive stance to more of a neutral posture as the Fed appeared to be approaching a pause in its interest rate-hiking campaign. Although both the Treasury and the municipal yield curves continued to flatten during the past six months, the move was not nearly as dramatic as we have seen in prior periods. The municipal curve managed to retain a positive slope - particularly notable because the Treasury curve actually inverted early in 2006 - and this contributed to the market's and the Fund's positive performance. We maintained our focus on refundable, essential service securities from high- demand states. The lack of new-issue supply and increased demand for municipal bonds has caused spreads to narrow in all sectors of the municipal market. We took advantage of these tight spreads to move the Fund to a market neutral exposure to spread product while increasing its position in bonds tax-exempt in specialty states (that is, states with a combination of high taxes and larger populations). We believe this strategy should prove beneficial with any shift in the supply/demand imbalance in both the high yield sector and the general municipal market. For the six-month period ended April 30, 2006, the Fund's Auction Market Preferred Stock had an average yield of 3.02% for Series A, 3.07% for Series B and 2.96% for Series C. The Fed raised the short-term interest rate target 200 basis points during the 12-month period, and this continued to affect the Fund's borrowing costs. We would expect additional increases in the cost of funds to be more limited as the Fed nears a pause in its monetary tightening campaign. Despite the interest rate increases during the period, the tax- exempt yield curve maintained a positive slope, allowing us to borrow at a lower rate than where we invest. This continued to generate an income benefit to the holders of Common Stock from the leveraging of Preferred Stock. However, should the spread between short-term and long-term interest rates narrow, the benefits of leveraging will decline and, as a result, reduce the yield on the Fund's Common Stock. (For a more complete explanation of the benefits and risks of leveraging, see page 7 of this report to shareholders.) How would you characterize the Fund's position at the close of the period? We remain focused on generating an attractive level of tax-exempt income for our shareholders. The Fund ended the period fully invested and with an overall neutral market posture. After 16 consecutive interest rate hikes, the Fed may be near a pause in its monetary tightening program. However, global economies and certain pockets of the U.S. economy continue to show solid growth, leading us to believe that it still may be early to become too aggressive. We believe a neutral stance is prudent in the current environment and should provide competitive performance. MuniHoldings Insured Fund, Inc. How did the Fund perform during the fiscal year? For the 12-month period ended April 30, 2006, the Common Stock of MuniHoldings Insured Fund, Inc. had net annualized yields of 5.92% and 6.24%, based on a year-end per share net asset value of $13.80 and a per share market price of $13.10, respectively, and $.817 per share income dividends. Over the same period, the total investment return on the Fund's Common Stock was +1.46%, based on a change in per share net asset value from $14.44 to $13.80, and assuming reinvestment of all distributions. The Fund's total return, based on net asset value, trailed the +2.24% average return of the Lipper Insured Municipal Debt Funds (Leveraged) category for the 12-month period. (Funds in this Lipper category invest primarily in municipal debt issues insured as to timely payment. These funds can be leveraged via use of debt, preferred equity and/or reverse repurchase agreements.) ANNUAL REPORTS APRIL 30, 2006 A Discussion With Your Funds' Portfolio Manager (concluded) Overall, the municipal market performed fairly well in this period of rising interest rates. The yield curve continued to flatten as the long end rallied slightly while the short end underperformed. Against this backdrop, Fund performance lagged due to its higher exposure to securities at the shorter end of the yield curve. While we anticipated that the curve would flatten, we held on to securities with shorter effective maturities (generally eight years - 15 years) because they were booked in the portfolio at above-average yields, allowing us to maintain the Fund's competitive distribution rate. As such, the Fund maintained one of the highest yields in its Lipper category, although its total return underperformed the average. For the six-month period ended April 30, 2006, the total investment return on the Fund's Common Stock was +1.84%, based on a change in per share net asset value from $13.94 to $13.80, and assuming reinvestment of all distributions. For a description of the Fund's total investment return based on a change in the per share market value of the Fund's Common Stock (as measured by the trading price of the Fund's shares on the New York Stock Exchange), and assuming reinvestment of distributions, please refer to the Financial Highlights section of this report. As a closed-end fund, the Fund's shares may trade in the secondary market at a premium or discount to the Fund's net asset value. As a result, total investment returns based on changes in the market value of the Fund's Common Stock may vary significantly from total investment returns based on changes in the Fund's net asset value. What changes were made to the portfolio during the period? Broadly speaking, we moved the portfolio from a slightly defensive stance to more of a neutral posture as the Fed appeared to be approaching a pause in its interest rate-hiking campaign. Although both the Treasury and the municipal yield curves continued to flatten during the past six months, the move was not nearly as dramatic as we have seen in prior periods. The municipal curve managed to retain a positive slope - particularly notable because the Treasury curve actually inverted early in 2006 - and this contributed to the market's and the Fund's positive performance. We maintained our focus on refundable, essential service securities from high- demand states. The lack of new-issue supply and increased demand for municipal bonds has caused spreads to narrow in all sectors of the municipal market. We took advantage of these tight spreads to in-crease the Fund's exposure to the bonds of specialty states (that is, states with a combination of high taxes and larger populations.) We believe our strategy should prove beneficial going forward, as the relatively tight spreads have driven down the yield sacrifice typically involved in owning specialty state bonds. However, should increasing supply or decreasing demand reestablish normal sector spreads in the future, we will once again decrease our exposure to the specialty states. For the six-month period ended April 30, 2006, the Fund's Auction Market Preferred Stock had average yields of 3.09% for Series A and 2.99% for Series B. The Fed raised the short-term interest rate target 200 basis points during the 12-month period, and this continued to affect the Fund's borrowing costs. We would expect additional increases in the cost of funds to be more limited as the Fed nears a pause in its monetary tightening campaign. Despite the interest rate increases during the period, the tax-exempt yield curve maintained a positive slope, allowing us to borrow at a lower rate than where we invest. This continued to generate an income benefit to the holders of Common Stock from the leveraging of Preferred Stock. However, should the spread between short-term and long-term interest rates narrow, the benefits of leveraging will decline and, as a result, reduce the yield on the Fund's Common Stock. (For a more complete explanation of the benefits and risks of leveraging, see page 7 of this report to shareholders.) How would you characterize the Fund's position at the close of the period? We remain focused on generating an attractive level of tax-exempt income for our shareholders. The Fund ended the period fully invested and with an overall neutral market posture. After 16 consecutive interest rate hikes, the Fed may be near a pause in its monetary tightening program. However, global economies and certain pockets of the U.S. economy continue to show solid growth, leading us to believe that it still may be early to become too aggressive. We believe a neutral stance is prudent in the current environment and should provide competitive performance. Robert A. DiMella, CFA Vice President and Portfolio Manager May 15, 2006 ANNUAL REPORTS APRIL 30, 2006 The Benefits and Risks of Leveraging The Funds utilize leveraging to seek to enhance the yield and net asset value of their Common Stock. However, these objectives cannot be achieved in all interest rate environments. To leverage, each Fund issues Preferred Stock, which pays dividends at prevailing short-term interest rates, and invests the proceeds in long-term municipal bonds. The interest earned on these investments is paid to Common Stock shareholders in the form of dividends, and the value of these portfolio holdings is reflected in the per share net asset value of each Fund's Common Stock. However, in order to benefit Common Stock shareholders, the yield curve must be positively sloped; that is, short-term interest rates must be lower than long-term interest rates. At the same time, a period of generally declining interest rates will benefit Common Stock shareholders. If either of these conditions change, then the risks of leveraging will begin to outweigh the benefits. To illustrate these concepts, assume a fund's Common Stock capitalization of $100 million and the issuance of Preferred Stock for an additional $50 million, creating a total value of $150 million available for investment in long-term municipal bonds. If prevailing short-term interest rates are approximately 3% and long-term interest rates are approximately 6%, the yield curve has a strongly positive slope. The fund pays dividends on the $50 million of Preferred Stock based on the lower short-term interest rates. At the same time, the fund's total portfolio of $150 million earns the income based on long-term interest rates. In this case, the dividends paid to Preferred Stock shareholders are significantly lower than the income earned on the fund's long-term investments, and therefore the Common Stock shareholders are the beneficiaries of the incremental yield. However, if short-term interest rates rise, narrowing the differential between short-term and long-term interest rates, the incremental yield pickup on the Common Stock will be reduced or eliminated completely. At the same time, the market value on the fund's Common Stock (that is, its price as listed on the New York Stock Exchange), may, as a result, decline. Furthermore, if long-term interest rates rise, the Common Stock's net asset value will reflect the full decline in the price of the portfolio's investments, since the value of the fund's Preferred Stock does not fluctuate. In addition to the decline in net asset value, the market value of the fund's Common Stock may also decline. As of April 30, 2006, MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. had leverage amounts, due to Auction Market Preferred Stock, of 35.85% and 42.98% of total net assets, respectively, before the deduction of Preferred Stock. As a part of their investment strategy, the Funds may invest in certain securities whose potential income return is inversely related to changes in a floating interest rate ("inverse floaters"). In general, income on inverse floaters will decrease when short-term interest rates increase and increase when short-term interest rates decrease. Investments in inverse floaters may be characterized as derivative securities and may subject the Funds to the risks of reduced or eliminated interest payments and losses of invested principal. In addition, inverse floaters have the effect of providing investment leverage and, as a result, the market value of such securities will generally be more volatile than that of fixed-rate, tax-exempt securities. To the extent the Funds invest in inverse floaters, the market value of each Fund's portfolio and the net asset value of each Fund's shares may also be more volatile than if the Funds did not invest in these securities. Swap Agreements The Funds may invest in swap agreements, which are over-the-counter contracts in which one party agrees to make periodic payments based on the change in market value of a specified bond, basket of bonds, or index in return for periodic payments based on a fixed or variable interest rate or the change in market value of a different bond, basket of bonds or index. Swap agreements may be used to obtain exposure to a bond or market without owning or taking physical custody of securities. Swap agreements involve the risk that the party with whom each Fund has entered into a swap will default on its obligation to pay the Fund and the risk that the Fund will not be able to meet its obligations to pay the other party to the agreement. ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments as of April 30, 2006 (As Restated. See Note 6) MuniHoldings Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value Alabama--2.9% $ 1,750 Camden, Alabama, IDB, Exempt Facilities Revenue Bonds (Weyerhaeuser Company), Series A, 6.125% due 12/01/2024 $ 1,924 4,550 Jefferson County, Alabama, Limited Obligation School Warrants, Series A, 5% due 1/01/2024 4,646 Alaska--1.5% 3,400 Valdez, Alaska, Marine Terminal Revenue Refunding Bonds (BP Pipelines Inc. Project), VRDN, Series C, 3.71% due 7/01/2037 (f) 3,400 Arizona--3.4% Maricopa County, Arizona, IDA, Education Revenue Bonds (Arizona Charter Schools Project 1), Series A: 935 6.50% due 7/01/2012 942 2,300 6.75% due 7/01/2029 2,289 3,000 Phoenix, Arizona, IDA, Airport Facility, Revenue Refunding Bonds (America West Airlines Inc. Project), AMT, 6.30% due 4/01/2023 2,668 1,000 Pinal County, Arizona, COP, 5% due 12/01/2029 1,007 610 Show Low, Arizona, Improvement District No. 5, Special Assessment Bonds, 6.375% due 1/01/2015 627 Arkansas--0.9% 2,000 University of Arkansas, University Construction Revenue Bonds (UAMS Campus), Series B, 5% due 11/01/2023 (h) 2,073 California--18.7% 875 Agua Caliente Band of Cahuilla Indians, California, Casino Revenue Bonds, 5.60% due 7/01/2013 907 2,965 California Infrastructure and Economic Development Bank, Insured Revenue Bonds (Rand Corporation), Series A, 5.50% due 4/01/2032 (b) 3,173 6,800 California State Public Works Board, Lease Revenue Bonds (Department of Corrections), Series C, 5.25% due 6/01/2028 7,049 2,500 California State, Various Purpose, GO, 5.50% due 4/01/2028 2,705 3,870 California Statewide Communities Development Authority, Health Facility Revenue Bonds (Memorial Health Services), Series A, 6% due 10/01/2023 4,202 2,000 East Side Union High School District, California, Santa Clara County, GO (Election of 2002), Series D, 5% due 8/01/2021 (k) 2,092 Golden State Tobacco Securitization Corporation of California, Tobacco Settlement Revenue Bonds: 1,165 Series A-3, 7.875% due 6/01/2042 1,387 1,670 Series B, 5.625% due 6/01/2013 (i) 1,837 6,000 Los Angeles, California, Unified School District, GO, Series A, 5% due 1/01/2028 (h) 6,201 Montebello, California, Unified School District, GO (c)(m): 2,405 5.61% due 8/01/2022 1,091 2,455 5.61% due 8/01/2023 1,059 Face Amount Municipal Bonds Value California (concluded) $ 2,095 Oceanside, California, Unified School District, GO (Election of 2000), Series C, 5.25% due 8/01/2032 (h) $ 2,196 3,490 Sequoia, California, Unified High School District, GO, Refunding, Series B, 5.50% due 7/01/2035 (e) 3,823 1,000 Sunnyvale, California, School District, GO (Election of 2004), Series A, 5% due 9/01/2026 (e) 1,040 2,915 Tustin, California, Unified School District, Senior Lien Special Tax Bonds (Community Facilities District Number 97-1), Series A, 5% due 9/01/2032 (e) 2,977 Colorado--1.7% 2,645 Elk Valley, Colorado, Public Improvement Revenue Bonds (Public Improvement Fee), Series A, 7.35% due 9/01/2031 2,799 1,000 Plaza Metropolitan District Number 1, Colorado, Tax Allocation Revenue Bonds (Public Improvement Fees), 8.125% due 12/01/2025 997 Connecticut--4.5% 2,285 Bridgeport, Connecticut, Senior Living Facilities Revenue Bonds (3030 Park Retirement Community Project), 7.25% due 4/01/2035 1,925 2,165 Connecticut State Development Authority, Airport Facility Revenue Bonds (LearJet Inc. Project), AMT, 7.95% due 4/01/2026 2,575 2,735 Connecticut State Development Authority, IDR (AFCO Cargo BDL-LLC Project), AMT, 8% due 4/01/2030 2,957 2,450 Connecticut State, GO, Series A, 4.75% due 12/15/2024 2,507 Florida--9.1% 2,980 Florida State Department of Transportation, Turnpike Revenue Bonds, Series A, 5% due 7/01/2030 3,082 2,340 Miami-Dade County, Florida, Subordinate Special Obligation Revenue Bonds, Series A, 5.24% due 10/01/2037 (h)(m) 434 Midtown Miami, Florida, Community Development District, Special Assessment Revenue Bonds: 2,250 Series A, 6.25% due 5/01/2037 2,453 2,550 Series B, 6.50% due 5/01/2037 2,821 3,225 Orange County, Florida, Health Facilities Authority, Hospital Revenue Bonds (Orlando Regional Healthcare), 6% due 12/01/2012 (i) 3,602 2,095 Orlando, Florida, Greater Orlando Aviation Authority, Airport Facilities Revenue Bonds (JetBlue Airways Corp.), AMT, 6.50% due 11/15/2036 2,100 800 Orlando, Florida, Urban Community Development District, Capital Improvement Special Assessment Bonds, Series A, 6.95% due 5/01/2033 862 1,645 Preserve at Wilderness Lake, Florida, Community Development District, Capital Improvement Bonds, Series A, 5.90% due 5/01/2034 1,688 Portfolio Abbreviations To simplify the listings of portfolio holdings in the Schedules of Investments, we have abbreviated the names of many of the securities according to the list at right. AMT Alternative Minimum Tax (subject to) COP Certificates of Participation DRIVERS Derivative Inverse Tax-Exempt Receipts EDA Economic Development Authority GO General Obligation Bonds HDA Housing Development Authority HFA Housing Finance Agency IDA Industrial Development Authority IDB Industrial Development Board IDR Industrial Development Revenue Bonds M/F Multi-Family PCR Pollution Control Revenue Bonds VRDN Variable Rate Demand Notes ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments (continued) MuniHoldings Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value Florida (concluded) $ 1,000 Tern Bay Community Development District, Florida, Capital Improvement Revenue Refunding Bonds, Series A, 5.375% due 5/01/2037 $ 989 2,300 West Villages Improvement District, Florida, Special Assessment Revenue Refunding Bonds (Unit of Development Number 2), 5.80% due 5/01/2036 2,349 Georgia--0.9% 1,750 Atlanta, Georgia, Tax Allocation Bonds (Atlantic Station Project), 7.90% due 12/01/2024 1,941 Illinois--3.8% 730 Beardstown, Illinois, IDR (Jefferson Smurfit Corp. Project), 8% due 10/01/2016 751 1,000 Chicago, Illinois, O'Hare International Airport, Special Facility Revenue Refunding Bonds (American Airlines Inc. Project), 8.20% due 12/01/2024 1,004 1,200 Chicago, Illinois, Special Assessment Bonds (Lake Shore East), 6.75% due 12/01/2032 1,288 4,000 Illinois HDA, Homeowner Mortgage Revenue Bonds, AMT, Sub-Series C-2, 5.35% due 2/01/2027 4,072 700 Illinois State Finance Authority Revenue Bonds (Landing At Plymouth Place Project), Series A, 6% due 5/15/2025 723 625 Naperville, Illinois, IDR (General Motors Corporation), Refunding, VRDN, 8% due 12/01/2012 (f) 625 Indiana--2.6% 8,985 Allen County, Indiana, Redevelopment District Tax Increment Revenue Bonds (General Motors Development Area), 7% due 5/15/2008 (i)(m) 5,911 Kentucky--1.0% 2,000 Louisville and Jefferson Counties, Kentucky, Metropolitan Sewer District, Sewer and Drain System Revenue Bonds, Series A, 5.50% due 5/15/2034 (h) 2,155 Louisiana--4.3% 4,115 Louisiana Public Facilities Authority, Hospital Revenue Bonds (Franciscan Missionaries of Our Lady Health System, Inc.), Series A, 5.25% due 8/15/2036 4,181 1,750 New Orleans, Louisiana, Financing Authority Revenue Bonds (Xavier University of Louisiana Project), 5.30% due 6/01/2026 (h) 1,822 3,540 New Orleans, Louisiana, GO (Public Improvements), 5% due 10/01/2033 (h) 3,585 Maryland--3.9% 1,875 Anne Arundel County, Maryland, Special Obligation Revenue Bonds (Arundel Mills Project), 7.10% due 7/01/2009 (i) 2,090 Maryland State Economic Development Corporation, Student Housing Revenue Bonds (University of Maryland College Park Project) (i): 1,760 6% due 6/01/2013 1,960 1,700 6.50% due 6/01/2013 1,945 2,750 Maryland State Energy Financing Administration, Limited Obligation Revenue Bonds (Cogeneration-AES Warrior Run), AMT, 7.40% due 9/01/2019 2,779 Massachusetts--3.7% 2,900 Massachusetts State, HFA, Housing Revenue Bonds, AMT, Series A, 5.25% due 12/01/2048 2,900 5,215 Massachusetts State School Building Authority, Dedicated Sales Tax Revenue Bonds, Series A, 5% due 8/15/2030 (e) 5,403 Face Amount Municipal Bonds Value Michigan--3.5% $ 1,400 Flint, Michigan, Hospital Building Authority, Revenue Refunding Bonds (Hurley Medical Center), Series A, 6% due 7/01/2020 (a) $ 1,501 4,805 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds (Detroit Edison Pollution Control), AMT, Series B, 5.65% due 9/01/2029 4,978 1,300 Michigan State Strategic Fund, PCR (General Motors Corporation Project), VRDN, 7.875% due 12/01/2008 (f) 1,300 Minnesota--1.7% 3,500 Minneapolis, Minnesota, Community Development Agency, Supported Development Revenue Refunding Bonds, Series G-3, 5.45% due 12/01/2011 (i) 3,778 Mississippi--5.5% 7,675 Claiborne County, Mississippi, PCR, Refunding (System Energy Resources Inc. Project), 6.20% due 2/01/2026 7,746 2,500 Mississippi Business Finance Corporation, Mississippi, PCR, Refunding (System Energy Resources Inc. Project), 5.90% due 5/01/2022 2,521 Mississippi Development Bank, Special Obligation Revenue Refunding Bonds (Gulfport Water and Sewer System Project) (e): 1,000 5.25% due 7/01/2017 1,076 810 5.25% due 7/01/2019 867 Missouri--1.4% 1,915 Fenton, Missouri, Tax Increment Revenue Refunding and Improvement Bonds (Gravois Bluffs), 7% due 10/01/2011 (i) 2,186 1,000 Missouri State Development Finance Board, Infrastructure Facilities Revenue Refunding Bonds (Branson), Series A, 5.50% due 12/01/2032 1,026 New Jersey--13.4% 1,595 Garden State Preservation Trust of New Jersey, Open Space and Farmland Preservation Revenue Bonds, Series A, 5.80% due 11/01/2017 (e) 1,794 New Jersey EDA, Cigarette Tax Revenue Bonds: 5,385 5.75% due 6/15/2029 5,689 2,280 5.75% due 6/15/2034 2,396 New Jersey EDA, Retirement Community Revenue Bonds Series A: 1,475 (Cedar Crest Village Inc. Facility), 7.25% due 11/15/2031 1,591 2,600 (Seabrook Village Inc.), 8.25% due 11/15/2030 2,908 1,965 New Jersey EDA, School Facilities Construction Revenue Bonds, Series O, 5.125% due 3/01/2030 2,035 New Jersey EDA, Special Facility Revenue Bonds (Continental Airlines Inc. Project), AMT: 1,000 6.625% due 9/15/2012 1,016 2,950 6.25% due 9/15/2029 2,876 3,325 New Jersey Health Care Facilities Financing Authority Revenue Bonds (South Jersey Hospital), 6% due 7/01/2026 3,518 3,500 New Jersey State Turnpike Authority, Turnpike Revenue Bonds, Series C, 5% due 1/01/2030 (e) 3,619 2,315 Tobacco Settlement Financing Corporation of New Jersey, Asset-Backed Revenue Bonds, 7% due 6/01/2041 2,619 ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments (continued) MuniHoldings Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value New Mexico--3.7% $ 2,000 Farmington, New Mexico, PCR, Refunding (Public Service Company of New Mexico--San Juan Project), Series A, 6.30% due 12/01/2016 $ 2,063 New Mexico Finance Authority, Senior Lien State Transportation Revenue Bonds, Series A (h): 2,100 5.125% due 6/15/2017 2,227 3,720 5.125% due 6/15/2018 3,939 New York--14.2% 1,185 Dutchess County, New York, IDA, Civic Facility Revenue Refunding Bonds (Saint Francis Hospital), Series A, 7.50% due 3/01/2029 1,287 535 New York City, New York, City IDA, Civic Facility Revenue Bonds, Series C, 6.80% due 6/01/2028 573 480 New York City, New York, GO, Refunding, Series F, 6% due 8/01/2006 (h)(i) 490 New York City, New York, Sales Tax Asset Receivable Corporation Revenue Bonds: 3,500 Series A, 5.25% due 10/15/2018 (h) 3,749 6,500 Series A, 5% due 10/15/2029 (b) 6,736 2,715 New York State Dormitory Authority Revenue Bonds (School Districts Financing Program), Series D, 5.25% due 10/01/2023 (h) 2,880 1,050 New York State Thruway Authority, General Revenue Refunding Bonds, Series G, 5.25% due 1/01/2027 (e) 1,118 Tobacco Settlement Financing Corporation of New York Revenue Bonds: 3,150 Series A-1, 5.50% due 6/01/2018 3,368 3,500 Series C-1, 5.50% due 6/01/2017 3,715 3,800 Series C-1, 5.50% due 6/01/2020 (c) 4,093 1,400 Series C-1, 5.50% due 6/01/2022 1,494 2,080 Westchester County, New York, IDA, Continuing Care Retirement, Mortgage Revenue Bonds (Kendal on Hudson Project), Series A, 6.50% due 1/01/2034 2,209 Oklahoma--0.6% 1,425 Tulsa, Oklahoma, Municipal Airport Trust Revenue Refunding Bonds (AMR Corporation), AMT, Series A, 5.375% due 12/01/2035 1,417 Oregon--0.9% 2,050 Western Generation Agency, Oregon, Cogeneration Project Revenue Bonds (Wauna Cogeneration Project), AMT, Series B, 7.40% due 1/01/2016 2,066 Pennsylvania--6.8% 1,700 Bucks County, Pennsylvania, IDA, Retirement Community Revenue Bonds (Ann's Choice Inc.), Series A, 6.25% due 1/01/2035 1,749 3,500 Pennsylvania Economic Development Financing Authority, Exempt Facilities Revenue Bonds (National Gypsum Company), AMT, Series B, 6.125% due 11/01/2027 3,686 725 Philadelphia, Pennsylvania, Authority for IDR, Commercial Development, 7.75% due 12/01/2017 734 2,500 Philadelphia, Pennsylvania, Authority for IDR, Commercial Development (Days Inn), Refunding, Series B, 6.50% due 2/01/2007 (i) 2,590 Philadelphia, Pennsylvania, Authority for Industrial Development, Senior Living Revenue Bonds: 1,105 (Arbor House Inc. Project), Series E, 6.10% due 7/01/2033 1,146 1,245 (Saligman House Project), Series C, 6.10% due 7/01/2033 1,292 Face Amount Municipal Bonds Value Pennsylvania (concluded) $ 3,500 Sayre, Pennsylvania, Health Care Facilities Authority, Revenue Bonds (Guthrie Healthcare System), Series B, 7.125% due 12/01/2031 $ 4,099 Rhode Island--1.4% 2,820 Rhode Island State Health and Educational Building Corporation, Hospital Financing Revenue Bonds (Lifespan Obligation Group), 6.50% due 8/15/2012 (i) 3,215 South Carolina--1.5% 3,020 Medical University Hospital Authority, South Carolina, Hospital Facilities Revenue Refunding Bonds, Series A, 6.375% due 8/15/2012 (i) 3,434 Tennessee--6.0% 4,500 Hardeman County, Tennessee, Correctional Facilities Corporation Revenue Bonds, 7.75% due 8/01/2017 4,645 4,575 Shelby County, Tennessee, Health, Educational and Housing Facility Board, Hospital Revenue Refunding Bonds (Methodist Healthcare) 6.50% due 9/01/2012 (i) 5,238 3,400 Tennessee Educational Loan Revenue Bonds (Educational Funding South Inc.), AMT, Senior Series B, 6.20% due 12/01/2021 3,424 Texas--12.5% 4,000 Austin, Texas, Convention Center Revenue Bonds (Convention Enterprises Inc.), First Tier, Series A, 6.70% due 1/01/2028 4,252 1,000 Brazos River Authority, Texas, PCR, Refunding (TXU Energy Company LLC Project), Series B, 4.75% due 5/01/2029 1,005 2,340 Brazos River Authority, Texas, Revenue Refunding Bonds (Reliant Energy Inc. Project), Series B, 7.75% due 12/01/2018 2,537 3,375 Brazos River, Texas, Harbor Navigation District, Brazoria County Environmental Revenue Refunding Bonds (Dow Chemical Company Project), AMT, Series A-7, 6.625% due 5/15/2033 3,762 1,800 Houston, Texas, Health Facilities Development Corporation, Retirement Facility Revenue Bonds (Buckingham Senior Living Community), Series A, 7.125% due 2/15/2034 1,964 3,000 Lower Colorado River Authority, Texas, PCR (Samsung Austin Semiconductor), AMT, 6.375% due 4/01/2027 3,128 1,485 Matagorda County, Texas, Navigation District Number 1, Revenue Refunding Bonds (Reliant Energy Inc.), Series C, 8% due 5/01/2029 1,596 1,425 Port Corpus Christi, Texas, Individual Development Corporation, Environmental Facilities Revenue Bonds (Citgo Petroleum Corporation Project), AMT, 8.25% due 11/01/2031 1,492 5,160 Texas State Department of Housing and Community Affairs, Residential Mortgage Revenue Bonds, AMT, Series A, 5.70% due 1/01/2033 (d) 5,248 2,800 Texas State Department of Housing and Community Affairs, Residential Mortgage Revenue Refunding Bonds, AMT, Series B, 5.25% due 7/01/2022 (d) 2,881 Vermont--1.1% 2,370 Vermont Educational and Health Buildings Financing Agency, Revenue Bonds (Developmental and Mental Health), Series A, 6% due 6/15/2017 2,446 ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments (concluded) MuniHoldings Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value Virginia--5.4% $ 1,150 Chesterfield County, Virginia, IDA, PCR (Virginia Electric and Power Company), Series A, 5.875% due 6/01/2017 $ 1,236 3,000 Fairfax County, Virginia, EDA, Resource Recovery Revenue Refunding Bonds, AMT, Series A, 6.10% due 2/01/2011 (b) 3,259 Pocahontas Parkway Association, Virginia, Toll Road Revenue Bonds: 3,825 Senior Series A, 5.50% due 8/15/2028 3,896 1,500 Senior Series B, 8.40% due 8/15/2029 (m) 394 300 Senior Series B, 8.80% due 8/15/2030 (m) 74 3,035 Tobacco Settlement Financing Corporation of Virginia, Asset-Backed Revenue Bonds, 5.625% due 6/01/2037 3,101 Washington--0.6% 1,365 Seattle, Washington, Housing Authority Revenue Bonds (Replacement Housing Project), 6.125% due 12/01/2032 1,346 Wisconsin--1.2% Wisconsin State Health and Educational Facilities Authority Revenue Bonds: 825 (New Castle Place Project), Series A, 7% due 12/01/2031 850 1,755 (Synergyhealth Inc.), 6% due 11/15/2032 1,877 Puerto Rico--0.8% 2,060 Puerto Rico Industrial, Medical and Environmental Pollution Control Facilities Financing Authority, Special Facilities Revenue Bonds (American Airlines Inc.), Series A, 6.45% due 12/01/2025 1,851 U.S. Virgin Islands--1.7% 3,460 Virgin Islands Government Refinery Facilities, Revenue Refunding Bonds (Hovensa Coker Project), AMT, 6.50% due 7/01/2021 3,888 Total Municipal Bonds (Cost--$312,964)--146.8% 328,389 Face Amount Municipal Bonds Held in Trust (g) Value California--3.2% $ 6,810 California Pollution Control Financing Authority, PCR, Refunding (Pacific Gas and Electric), AMT, Series A, 5.35% due 12/01/2016 (h) $ 7,180 Maryland--5.1% 10,835 Baltimore, Maryland, Convention Center Hotel Revenue Bonds, Senior Series A, 5.25% due 9/01/2039 (k) 11,436 New York--2.0% 4,240 New York City, New York, Sales Tax Asset Receivable Corporation Revenue Bonds, Series A, 5.25% due 10/15/2027 (b) 4,505 Texas--5.5% 11,760 Harris County, Texas, Toll Road Revenue Refunding Bonds, Senior Lien, Series A, 5.25% due 8/15/2035 (e) 12,241 Total Municipal Bonds Held in Trust (Cost--$35,709)--15.8% 35,362 Shares Held Short-Term Securities 9 Merrill Lynch Institutional Tax-Exempt Fund, 3.49% (j)(l) 9 Total Short-Term Securities (Cost--$9)--0.0% 9 Total Investments (Cost--$348,682*)--162.6% 363,760 Other Assets Less Liabilities--0.9% 1,956 Liability for Trust Certificates, Including Interest Expense Payable--(7.6%) (17,005) Preferred Stock, at Redemption Value--(55.9%) (125,053) ---------- Net Assets Applicable to Common Stock--100.0% $ 223,658 ========== * The cost and unrealized appreciation (depreciation) of investments as of April 30, 2006, as computed for federal income tax purposes, were as follows: Aggregate cost $ 331,545 =============== Gross unrealized appreciation $ 17,212 Gross unrealized depreciation (1,820) --------------- Net unrealized appreciation $ 15,392 =============== (a) ACA Insured. (b) AMBAC Insured. (c) FGIC Insured. (d) FNMA/GNMA Collateralized. (e) FSA Insured. (f) Security may have a maturity of more than one year at time of issuance, but has variable rate and demand features that qualify it as a short-term security. The rate disclosed is that currently in effect. This rate changes periodically based upon prevailing market rates. (g) As restated. See Note 6. Securities represent underlying bonds transferred to a separate securitization trust established in a tender option bond transaction in which the Fund may have acquired the residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1(c) to Financial Statements for details of Municipal Bonds Held in Trust. (h) MBIA Insured. (i) Prerefunded. (j) Represents the current yield as of 4/30/2006. (k) XL Capital Insured. (l) Investments in companies considered to be an affiliate of the Fund, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows: Net Dividend Affiliate Activity Income Merrill Lynch Institutional Tax-Exempt Fund -- --* * Amount is less than $1,000. (m) Represents a zero coupon bond; the interest rate shown reflects the effective yield at the time of purchase. See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments as of April 30, 2006 (As Restated. See Note 6) MuniHoldings Insured Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value Alabama--1.3% $ 2,170 Jefferson County, Alabama, Limited Obligation School Warrants, Series A, 5.50% due 1/01/2022 $ 2,317 California--26.4% 2,000 California State Public Works Board, Lease Revenue Bonds (Department of General Services-- Capitol East End Complex), Series A, 5% due 12/01/2027 (a) 2,051 1,300 California State, Various Purpose, GO, 5.50% due 4/01/2028 1,407 East Side Union High School District, California, Santa Clara County, GO (Election of 2002): 1,800 Series B, 5% due 8/01/2027 (c) 1,854 1,335 Series D, 5% due 8/01/2021 (d) 1,396 5,155 Series D, 5% due 8/01/2029 (d) 5,305 Los Angeles, California, Unified School District, GO: 2,000 (Election of 1997), Series F, 5% due 1/01/2028 (c) 2,067 4,395 Series A, 5% due 1/01/2028 (b) 4,542 2,565 Modesto, California, Schools Infrastructure Financing Agency, Special Tax Bonds, 5.50% due 9/01/2036 (a) 2,760 5,005 San Francisco, California, City and County, GO (California Academy of Sciences Improvements), Series E, 5% due 6/15/2023 (b) 5,201 1,265 San Jose, California, GO (Libraries, Parks and Public Safety Projects), 5% due 9/01/2030 (b) 1,301 San Pablo, California, Joint Powers Financing Authority, Tax Allocation Revenue Refunding Bonds (b)(m): 2,635 5.66% due 12/01/2024 1,010 2,355 5.66% due 12/01/2025 852 2,355 5.66% due 12/01/2026 803 3,145 Sequoia, California, Unified High School District, GO, Refunding, Series B, 5.50% due 7/01/2035 (f) 3,445 2,080 Sweetwater, California, Union High School District, Public Financing Authority, Special Tax Revenue Bonds, Series A, 5% due 9/01/2028 (f) 2,139 Tustin, California, Unified School District, Senior Lien Special Tax Bonds (Community Facilities District Number 97-1), Series A, (f): 2,180 5% due 9/01/2032 2,227 2,800 5% due 9/01/2038 2,852 2,000 University of California Revenue Bonds (Multiple Purpose Projects), Series Q, 5% due 9/01/2022 (f) 2,074 3,480 West Contra Costa, California, Unified School District, GO, Series C, 5% due 8/01/2021 (c) 3,616 Colorado--6.5% 10,620 Aurora, Colorado, COP 5.75% due 12/01/2010 (a)(g) 11,481 Florida--4.2% 2,890 Florida State Department of Transportation, Turnpike Revenue Bonds, Series A, 5% due 7/01/2030 2,989 2,225 Miami-Dade County, Florida, Subordinate Special Obligation Revenue Bonds, Series A, 5.24% due 10/01/2037 (b)(m) 413 3,850 Pasco County, Florida, Half-Cent Sales Tax Revenue Bonds, 5.125% due 12/01/2028 (a) 4,003 Face Amount Municipal Bonds Value Georgia--1.2% $ 2,000 Augusta, Georgia, Water and Sewer Revenue Bonds, 5.25% due 10/01/2034 (f) $ 2,114 Illinois--10.0% 7,965 Chicago, Illinois, GO, Series A, 6% due 7/01/2010 (c)(g) 8,713 2,965 Chicago, Illinois, Park District, Limited Tax, GO, Series A, 5.75% due 1/01/2011 (c)(g) 3,214 1,000 Chicago, Illinois, Second Lien, Water Revenue Refunding Bonds, VRDN, 3.77% due 11/01/2031 (b)(l) 1,000 4,500 Illinois State, GO, First Series, 6% due 1/01/2018 (c) 4,809 45 Lake, Cook, Kane and McHenry Counties, Illinois, Community Unit School District Number 220, GO, 5.75% due 12/01/2019 (c) 48 Indiana--1.2% 2,000 Indiana Transportation Finance Authority, Highway Revenue Bonds, Series A, 5.25% due 6/01/2029 (c) 2,110 Maryland--1.6% 2,640 Baltimore, Maryland, Convention Center Hotel Revenue Bonds, Senior Series A, 5.25% due 9/01/2023 (d) 2,825 Massachusetts--11.6% 3,565 Massachusetts Bay Transportation Authority, Sales Tax Revenue Refunding Bonds, Senior Series A, 5% due 7/01/2035 3,648 2,105 Massachusetts Bay Transportation Authority, Special Assessment Revenue Refunding Bonds, Series A, 5% due 7/01/2031 2,172 565 Massachusetts State, HFA, Housing Development Revenue Refunding Bonds, AMT, Series A, 5.15% due 6/01/2011 (b) 567 Massachusetts State, HFA, Rental Housing Mortgage Revenue Bonds, AMT (f): 3,300 Series A, 5.15% due 7/01/2026 3,289 2,440 Series C, 5.50% due 7/01/2032 2,555 8,065 Massachusetts State School Building Authority, Dedicated Sales Tax Revenue Bonds, Series A, 5% due 8/15/2030 (f) 8,356 Michigan--2.3% 2,035 Boyne City, Michigan, Public School District, GO, 5.75% due 5/01/2009 (c)(g) 2,150 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds, AMT (d): 400 DRIVERS, Series 858Z, 6.838% due 12/01/2011 (h) 446 1,500 (Detroit Edison Pollution), Series B, 5.65% due 9/01/2029 1,579 Minnesota--2.4% 4,015 Sauk Rapids, Minnesota, Independent School District Number 47, GO, Series A, 5.65% due 2/01/2019 (b) 4,340 ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments (continued) MuniHoldings Insured Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value Missouri--5.2% $ 2,000 Cape Girardeau, Missouri, School District Number 063, GO (Missouri Direct Deposit Program), 5.50% due 3/01/2018 (c) $ 2,112 Mehlville, Missouri, School District Number R-9, COP Series A (f): 1,925 5.50% due 3/01/2014 2,060 2,175 5.50% due 3/01/2015 2,322 1,170 5.50% due 3/01/2016 1,250 1,500 5.50% due 3/01/2017 1,592 Nebraska--2.2% Omaha Convention Hotel Corporation, Nebraska, Convention Center Revenue Bonds, First Tier, Series A (a): 1,585 5.50% due 4/01/2020 1,697 2,000 5.50% due 4/01/2021 2,136 New Jersey--18.1% 2,335 Garden State Preservation Trust of New Jersey, Open Space and Farmland Preservation Revenue Bonds, Series A, 5.80% due 11/01/2017 (f) 2,627 New Jersey EDA, Cigarette Tax Revenue Bonds: 5,295 5.75% due 6/15/2029 5,594 3,800 5.75% due 6/15/2034 (k) 4,118 6,700 New Jersey EDA, Motor Vehicle Surcharge Revenue Bonds, Series A, 5.25% due 7/01/2033 (b) 7,092 6,705 New Jersey State Transportation Trust Fund Authority, Transportation System Revenue Bonds, Series D, 5% due 6/15/2019 (f) 6,999 5,500 New Jersey State Turnpike Authority, Turnpike Revenue Bonds, Series C, 5% due 1/01/2030 (f) 5,687 New Mexico--3.1% New Mexico Finance Authority, Senior Lien State Transportation Revenue Bonds, Series A (b): 1,900 5.125% due 6/15/2017 2,015 3,325 5.125% due 6/15/2018 3,521 New York--31.9% 10,000 Nassau Health Care Corporation, New York, Health System Revenue Bonds, 5.75% due 8/01/2009 (f)(g) 10,810 New York City, New York, GO (f): 4,000 Series E, 5% due 11/01/2017 4,198 7,085 Series G, 5.75% due 10/15/2007 (g) 7,360 New York City, New York, GO, Refunding: 5,865 Series C, 5.875% due 8/01/2006 (b)(g) 5,984 230 Series G, 5.75% due 2/01/2017 (f) 234 New York City, New York, Sales Tax Asset Receivable Corporation Revenue Bonds, Series A: 3,150 5.25% due 10/15/2018 (b) 3,374 4,095 5.25% due 10/15/2027 (a) 4,351 3,500 5% due 10/15/2029 (a) 3,627 4,000 5% due 10/15/2032 (a) 4,139 2,645 New York State Dormitory Authority Revenue Bonds (School Districts Financing Program), Series D, 5.25% due 10/01/2023 (b) 2,805 945 New York State Thruway Authority, General Revenue Refunding Bonds, Series G, 5.25% due 1/01/2027 (f) 1,007 Tobacco Settlement Financing Corporation of New York Revenue Bonds, Series C-1: 4,900 5.50% due 6/01/2017 5,201 3,430 5.50% due 6/01/2020 (c) 3,694 Face Amount Municipal Bonds Value Oklahoma--0.9% $ 1,600 Oklahoma State Industries Authority, Revenue Refunding Bonds (Integris Baptist), VRDN, Series B, 3.81% due 8/15/2029 (b)(l) $ 1,600 Oregon--0.8% 1,400 Portland, Oregon, Urban Renewal and Redevelopment Tax Allocation Bonds (Oregon Convention Center), Series A, 5.75% due 6/15/2015 (a) 1,513 Pennsylvania--10.2% 3,900 Pennsylvania State Higher Educational Facilities Authority, State System of Higher Education Revenue Bonds, Series O, 5.125% due 6/15/2024 (a) 3,950 6,045 Philadelphia, Pennsylvania, Airport Revenue Bonds (Philadelphia Airport System), AMT, Series B, 5.50% due 6/15/2017 (c) 6,246 1,730 Sayre, Pennsylvania, Health Care Facilities Authority, Revenue Refunding Bonds (Guthrie Healthcare System), Series A, 5.875% due 12/01/2031 1,829 2,015 Seneca Valley, Pennsylvania, School District, GO, 5% due 1/01/2019 (c) 2,115 1,800 Washington County, Pennsylvania, Capital Funding Authority Revenue Bonds (Capital Projects and Equipment Program), 6.15% due 12/01/2029 (a) 1,928 1,885 York County, Pennsylvania, School of Technology Authority, Lease Revenue Refunding Bonds, 5.50% due 2/15/2022 (c) 2,026 Rhode Island--4.8% 5,000 Providence, Rhode Island, Redevelopment Agency Revenue Refunding Bonds (Public Safety and Municipal Buildings), Series A, 5.75% due 4/01/2010 (a)(g) 5,409 2,870 Rhode Island State Health and Educational Building Corporation Revenue Bonds (Rhode Island School of Design), Series D, 5.50% due 8/15/2031 (d) 3,089 South Carolina--0.9% 1,525 Medical University Hospital Authority, South Carolina, Hospital Facilities, Revenue Refunding Bonds, Series A, 5.25% due 2/15/2025 (b)(e) 1,607 Tennessee--3.0% Tennessee HDA, Revenue Refunding Bonds (Homeownership Program), AMT, Series A (f): 2,730 5.25% due 7/01/2022 2,793 2,505 5.35% due 1/01/2026 2,563 Texas--1.6% 2,780 Houston, Texas, Community College System, Participation Interests, COP (Alief Center Project), 5.75% due 8/15/2022 (b) 2,923 Washington--4.9% 4,000 Bellevue, Washington, GO, Refunding, 5.50% due 12/01/2039 (b) 4,317 2,310 Chelan County, Washington, Public Utility District Number 001, Consolidated Revenue Bonds (Chelan Hydro System), AMT, Series A, 5.45% due 7/01/2037 (a) 2,416 1,810 Snohomish County, Washington, Public Utility District Number 001, Electric Revenue Bonds, 5.50% due 12/01/2022 (f) 1,942 ANNUAL REPORTS APRIL 30, 2006 Schedule of Investments (concluded) MuniHoldings Insured Fund, Inc. (In Thousands) Face Amount Municipal Bonds Value West Virginia--2.9% $ 5,000 West Virginia State Housing Development Fund, Housing Finance Revenue Refunding Bonds, Series D, 5.20% due 11/01/2021 (b) $ 5,139 Wisconsin--0.3% 500 Wisconsin State Health and Educational Facilities Authority Revenue Bonds (Blood Center of Southeastern Wisconsin Project), 5.50% due 6/01/2024 520 Wyoming--0.9% 1,500 Wyoming Student Loan Corporation, Student Loan Revenue Refunding Bonds, Series A, 6.20% due 6/01/2024 1,589 Puerto Rico--3.0% 3,235 Puerto Rico Electric Power Authority, Power Revenue Bonds, Series RR, 5% due 7/01/2027 (d) 3,355 1,870 Puerto Rico Public Buildings Authority, Government Facilities Revenue Refunding Bonds, Series D, 5.25% due 7/01/2036 1,927 Total Municipal Bonds (Cost--$284,310)--163.4% 290,442 Municipal Bonds Held in Trust (j) Arkansas--4.3% 7,420 Arkansas State Development Finance Authority, M/F Mortgage Revenue Refunding Bonds, Series C, 5.35% due 12/01/2035 (b)(e) 7,666 California--3.9% 6,500 California Pollution Control Financing Authority, PCR, Refunding (Pacific Gas and Electric), AMT, Series A, 5.35% due 12/01/2016 (b) 6,853 Face Amount Municipal Bonds Held in Trust (j) Value Illinois--2.7% $ 4,300 Chicago, Illinois, O'Hare International Airport Revenue Bonds, Third Lien, AMT, Series B-2, 6% due 1/01/2029 (d) $ 4,743 Michigan--2.8% 3,500 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds (Detroit Edison Company Pollution Control Project), AMT, Series C, 5.65% due 9/01/2029 (d) 3,684 1,200 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds (Detroit Edison Company Pollution Control Project), AMT, Series A, 5.50% due 6/01/2030 (d) 1,268 Texas--4.7% 8,000 Dallas-Fort Worth, Texas, International Airport Revenue Bonds, AMT, Series A, 5.50% due 11/01/2033 (b) 8,453 Total Municipal Bonds Held in Trust (Cost--$32,001)--18.4% 32,667 Shares Held Short-Term Securities 21 Merrill Lynch Institutional Tax-Exempt Fund, 3.49% (i)(n) 21 Total Short-Term Securities (Cost--$21)--0.0% 21 Total Investments (Cost--$316,332*)--181.8% 323,130 Other Assets Less Liabilities--2.4% 4,314 Liability for Trust Certificates, Including Interest Expense Payable--(8.8%) (15,593) Preferred Stock, at Redemption Value--(75.4%) (134,061) ---------- Net Assets Applicable to Common Stock--100.0% $ 177,790 ========== * The cost and unrealized appreciation (depreciation) of investments as of April 30, 2006, as computed for federal income tax purposes, were as follows: Aggregate cost $ 301,417 =============== Gross unrealized appreciation $ 7,996 Gross unrealized depreciation (1,743) --------------- Net unrealized appreciation $ 6,253 =============== (a) AMBAC Insured. (b) MBIA Insured. (c) FGIC Insured. (d) XL Capital Insured. (e) FHA Insured. (f) FSA Insured. (g) Prerefunded. (h) The rate disclosed is that currently in effect. This rate changes periodically and inversely based upon prevailing market rates. (i) Investments in companies considered to be an affiliate of the Fund, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows: Net Dividend Affiliate Activity Income Merrill Lynch Institutional Tax-Exempt Fund (100) $15 (j) As restated. See Note 6. Securities represent underlying bonds transferred to a separate securitization trust established in a tender option bond transaction in which the Fund may have acquired the residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1(c) to Financial Statements for details of Municipal Bonds Held in Trust. (k) Assured Guaranty Insured. (l) Security may have a maturity of more than one year at time of issuance, but has variable rate and demand features that qualify it as a short-term security. The rate disclosed is that currently in effect. This rate changes periodically based upon prevailing market rates. (m) Represents a zero coupon bond; the interest rate shown reflects the effective yield at the time of purchase. (n) Represents the current yield as of 4/30/2006. See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Statements of Net Assets (As Restated. See Note 6) MuniHoldings MuniHoldings Insured As of April 30, 2006 Fund, Inc. Fund, Inc. Assets Investments in unaffiliated securities, at value* $ 363,750,805 $ 323,109,498 Investments in affiliated securities, at value** 8,940 20,840 Cash 683,782 7,781 Receivable for securities sold 3,601,148 5,327,830 Interest receivable 6,081,762 4,814,277 Prepaid expenses and other assets 2,197 2,351 --------------- --------------- Total assets 374,128,634 333,282,577 --------------- --------------- Liabilities Trust certificates 16,822,500 15,460,000 Payable for securities purchased 8,178,543 5,555,888 Interest expense payable 182,901 132,725 Payable to investment adviser 147,330 115,801 Payable for other affiliates 2,380 2,152 Dividends payable to Common Stock shareholders -- 90,855 Offering costs payable 10,000 -- Accrued expenses and other liabilities 74,431 73,896 --------------- --------------- Total liabilities 25,418,085 21,431,317 --------------- --------------- Preferred Stock Preferred Stock, at redemption value, par value $.10 per share*** of AMPS+++ at $25,000 per share liquidation preference 125,052,947 134,061,235 --------------- --------------- Net Assets Applicable to Common Stock Net assets applicable to Common Stock $ 223,657,602 $ 177,790,025 =============== =============== Net Assets Consist of Undistributed investment income--net $ 2,408,263 $ 936,244 Accumulated realized capital losses--net (172,781) (21,699,988) Unrealized appreciation--net 15,078,156 6,798,634 --------------- --------------- Total accumulated earnings (losses)--net 17,313,638 (13,965,110) Common Stock, par value $.10 per share++ 1,386,115 1,288,620 Paid-in capital in excess of par 204,957,849 190,466,515 --------------- --------------- Net Assets $ 223,657,602 $ 177,790,025 =============== =============== Net asset value per share of Common Stock $ 16.14 $ 13.80 =============== =============== Market price $ 16.20 $ 13.10 =============== =============== * Identified cost on unaffiliated securities $ 348,672,649 $ 316,310,864 =============== =============== ** Identified cost on affiliated securities $ 8,940 $ 20,840 =============== =============== *** Preferred Stock authorized, issued and outstanding: Series A Shares 2,200 2,680 =============== =============== Series B Shares 2,200 2,680 =============== =============== Series C Shares 600 -- =============== =============== ++ Common Stock issued and outstanding 13,861,150 12,886,200 =============== =============== +++ Auction Market Preferred Stock. See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Statements of Operations (As Restated. See Note 6) MuniHoldings MuniHoldings Insured For the Year Ended April 30, 2006 Fund, Inc. Fund, Inc. Investment Income Interest and amortization of premium and discount earned $ 18,988,809 $ 15,307,432 Dividends from affiliates 234 15,125 --------------- --------------- Total income 18,989,043 15,322,557 --------------- --------------- Expenses Investment advisory fees 1,883,168 1,736,742 Interest expense and fees 343,902 552,081 Commission fees 298,124 339,984 Accounting services 125,246 118,375 Professional fees 56,115 56,501 Transfer agent fees 54,870 48,540 Directors' fees and expenses 32,595 32,906 Printing and shareholder reports 26,329 24,708 Custodian fees 20,799 20,331 Pricing fees 19,551 16,105 Listing fees 15,057 15,048 Other 41,397 45,844 --------------- --------------- Total expenses before waiver and/or reimbursement 2,917,153 3,007,165 Waiver and/or reimbursement of expenses (18) (196,849) --------------- --------------- Total expenses after waiver and/or reimbursement 2,917,135 2,810,316 --------------- --------------- Investment income--net 16,071,908 12,512,241 --------------- --------------- Realized & Unrealized Gain (Loss)--Net Realized gain (loss) on: Investments--net 3,422,736 3,060,190 Futures contracts and forward interest rate swaps--net -- (700,892) --------------- --------------- Total realized gain--net 3,422,736 2,359,298 --------------- --------------- Change in unrealized appreciation/depreciation on: Investments--net (3,470,614) (9,762,207) Futures contracts and forward interest rate swaps--net -- 945,784 --------------- --------------- Total change in unrealized appreciation/depreciation--net (3,470,614) (8,816,423) --------------- --------------- Total realized and unrealized loss--net (47,878) (6,457,125) --------------- --------------- Dividends to Preferred Stock Shareholders Investment income--net (3,250,051) (3,639,222) --------------- --------------- Net Increase in Net Assets Resulting from Operations $ 12,773,979 $ 2,415,894 =============== =============== See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Statements of Changes in Net Assets (As Restated. See Note 6) MuniHoldings Fund, Inc. For the Year Ended April 30, Increase (Decrease) in Net Assets: 2006 2005 Operations Investment income--net $ 16,071,908 $ 16,624,737 Realized gain--net 3,422,736 2,939,797 Change in unrealized appreciation/depreciation--net (3,470,614) 8,533,488 Dividends to Preferred Stock shareholders (3,250,051) (1,607,958) --------------- --------------- Net increase in net assets resulting from operations 12,773,979 26,490,064 --------------- --------------- Dividends to Common Stock Shareholders Investment income--net (14,886,804) (15,903,116) --------------- --------------- Net decrease in net assets resulting from dividends to Common Stock shareholders (14,886,804) (15,903,116) --------------- --------------- Stock Transactions Offering and underwriting costs resulting from the issuance of Preferred Stock (253,446) -- Value of shares issued to Common Stock shareholders in reinvestment of dividends 805,613 158,591 --------------- --------------- Net increase in net assets resulting from stock transactions 552,167 158,591 --------------- --------------- Net Assets Applicable to Common Stock Total increase (decrease) in net assets applicable to Common Stock (1,560,658) 10,745,539 Beginning of year 225,218,260 214,472,721 --------------- --------------- End of year* $ 223,657,602 $ 225,218,260 =============== =============== * Undistributed investment income--net $ 2,408,263 $ 4,473,210 =============== =============== See Notes to Financial Statements. MuniHoldings Insured Fund, Inc. For the Year Ended April 30, Increase (Decrease) in Net Assets: 2006 2005 Operations Investment income--net $ 12,512,241 $ 13,024,998 Realized gain--net 2,359,298 1,298,936 Change in unrealized appreciation/depreciation--net (8,816,423) 3,509,698 Dividends to Preferred Stock shareholders (3,639,222) (2,002,764) --------------- --------------- Net increase in net assets resulting from operations 2,415,894 15,830,868 --------------- --------------- Dividends to Common Stock Shareholders Investment income--net (10,717,062) (11,735,198) --------------- --------------- Net decrease in net assets resulting from dividends to Common Stock shareholders (10,717,062) (11,735,198) --------------- --------------- Stock Transactions Value of shares issued to Common Stock shareholders in reinvestment of dividends 269,995 -- --------------- --------------- Net increase in net assets resulting from stock transactions 269,995 -- --------------- --------------- Net Assets Applicable to Common Stock Total increase (decrease) in net assets applicable to Common Stock (8,031,173) 4,095,670 Beginning of year 185,821,198 181,725,528 --------------- --------------- End of year* $ 177,790,025 $ 185,821,198 =============== =============== * Undistributed investment income--net $ 936,244 $ 2,780,287 =============== =============== See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Financial Highlights (As Restated. See Note 6) MuniHoldings Fund, Inc. The following per share data and ratios have been derived For the Year Ended April 30, from information provided in the financial statements. 2006 2005 2004 2003 2002 Per Share Operating Performance Net asset value, beginning of year $ 16.31 $ 15.54 $ 15.07 $ 14.50 $ 13.76 ----------- ----------- ----------- ----------- ----------- Investment income--net 1.16++++ 1.20++++ 1.25++++ 1.25++++ 1.17 Realized and unrealized gain (loss)--net --++++++ .84 .40 .40 .66 Less dividends to Preferred Stock shareholders from investment income--net (.23) (.12) (.07) (.10) (.16) ----------- ----------- ----------- ----------- ----------- Total from investment operations .93 1.92 1.58 1.55 1.67 ----------- ----------- ----------- ----------- ----------- Less dividends to Common Stock shareholders from investment income--net (1.08) (1.15) (1.11) (.98) (.93) ----------- ----------- ----------- ----------- ----------- Offering and underwriting costs resulting from the issuance of Preferred Stock (.02) -- -- -- -- ----------- ----------- ----------- ----------- ----------- Net asset value, end of year $ 16.14 $ 16.31 $ 15.54 $ 15.07 $ 14.50 =========== =========== =========== =========== =========== Market price per share, end of year $ 16.20 $ 16.12 $ 14.43 $ 14.43 $ 13.38 =========== =========== =========== =========== =========== Total Investment Return++ Based on net asset value per share 5.69% 12.95% 10.94% 11.54% 12.64% =========== =========== =========== =========== =========== Based on market price per share 7.34% 20.22% 7.58% 15.75% 8.51% =========== =========== =========== =========== =========== Ratios Based on Average Net Assets Applicable to Common Stock Total expenses, net of reimbursement and excluding interest expense and fees* 1.15% 1.13% 1.14% 1.18% 1.21% =========== =========== =========== =========== =========== Total expenses, net of reimbursement* 1.30% 1.15% 1.23% 1.37% 1.46% =========== =========== =========== =========== =========== Total expenses* 1.30% 1.15% 1.24% 1.37% 1.46% =========== =========== =========== =========== =========== Total investment income--net* 7.15% 7.61% 7.98% 8.40% 8.03% =========== =========== =========== =========== =========== Amount of dividends to Preferred Stock shareholders 1.45% .74% .45% .66% 1.08% =========== =========== =========== =========== =========== Investment income--net, to Common Stock shareholders 5.70% 6.87% 7.53% 7.74% 6.95% =========== =========== =========== =========== =========== Ratios Based on Average Net Assets Applicable to Preferred Stock Dividends to Preferred Stock shareholders 2.76% 1.47% .88% 1.23% 1.96% =========== =========== =========== =========== =========== Supplemental Data Net assets applicable to Common Stock, end of year (in thousands) $ 223,658 $ 225,218 $ 214,473 $ 207,960 $ 200,091 =========== =========== =========== =========== =========== Preferred Stock outstanding at liquidation preference, end of year (in thousands) $ 125,000 $ 110,000 $ 110,000 $ 110,000 $ 110,000 =========== =========== =========== =========== =========== Portfolio turnover 45% 34% 41% 46% 56% =========== =========== =========== =========== =========== Leverage Asset coverage per $1,000 $ 2,789 $ 3,047 $ 2,950 $ 2,891 $ 2,819 =========== =========== =========== =========== =========== Dividends Per Share on Preferred Stock Outstanding Series A--Investment income--net $ 688 $ 366 $ 220 $ 315 $ 492 =========== =========== =========== =========== =========== Series B--Investment income--net $ 684 $ 365 $ 223 $ 302 $ 490 =========== =========== =========== =========== =========== Series C**--Investment income--net $ 389 -- -- -- -- =========== =========== =========== =========== =========== * Do not reflect the effect of dividends to Preferred Stock shareholders. ** Series C was issued on October 19, 2005. ++ Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Total investment returns exclude the effects of sales charges. ++++ Based on average shares outstanding. ++++++ Amount is less than $(.01). See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Financial Highlights (As Restated. See Note 6) MuniHoldings Insured Fund, Inc. The following per share data and ratios have been derived For the Year Ended April 30, from information provided in the financial statements. 2006 2005 2004 2003 2002 Per Share Operating Performance Net asset value, beginning of year $ 14.44 $ 14.12 $ 14.48 $ 13.78 $ 13.29 ----------- ----------- ----------- ----------- ----------- Investment income--net .97++ 1.01++ 1.04++ 1.06++ 1.07 Realized and unrealized gain (loss)--net (.50) .38 (.42) .62 .44 Less dividends to Preferred Stock shareholders from investment income--net (.28) (.16) (.09) (.13) (.21) ----------- ----------- ----------- ----------- ----------- Total from investment operations .19 1.23 .53 1.55 1.30 ----------- ----------- ----------- ----------- ----------- Less dividends to Common Stock shareholders from investment income--net (.83) (.91) (.89) (.85) (.81) ----------- ----------- ----------- ----------- ----------- Net asset value, end of year $ 13.80 $ 14.44 $ 14.12 $ 14.48 $ 13.78 =========== =========== =========== =========== =========== Market price per share, end of year $ 13.10 $ 13.70 $ 12.64 $ 13.50 $ 12.65 =========== =========== =========== =========== =========== Total Investment Return* Based on net asset value per share 1.46% 9.35% 4.07% 12.04% 10.28% =========== =========== =========== =========== =========== Based on market price per share 1.51% 15.90% (.07%) 13.79% 4.38% =========== =========== =========== =========== =========== Ratios Based on Average Net Assets Applicable to Common Stock Total expenses, net of waiver and reimbursement and excluding interest expense and fees** 1.24% 1.24% 1.24% 1.28% 1.30% =========== =========== =========== =========== =========== Total expenses, net of waiver and reimbursement** 1.54% 1.60% 1.57% 1.69% 1.86% =========== =========== =========== =========== =========== Total expenses** 1.65% 1.70% 1.67% 1.79% 1.95% =========== =========== =========== =========== =========== Total investment income--net** 6.87% 7.09% 7.12% 7.55% 7.75% =========== =========== =========== =========== =========== Amount of dividends to Preferred Stock shareholders 2.00% 1.09% .65% .91% 1.50% =========== =========== =========== =========== =========== Investment income--net, to Common Stock shareholders 4.87% 6.00% 6.47% 6.64% 6.25% =========== =========== =========== =========== =========== Ratios Based on Average Net Assets Applicable to Preferred Stock Dividends to Preferred Stock shareholders 2.72% 1.50% .90% 1.23% 1.99% =========== =========== =========== =========== =========== Supplemental Data Net assets applicable to Common Stock, end of year (in thousands) $ 177,790 $ 185,821 $ 181,726 $ 186,372 $ 177,286 =========== =========== =========== =========== =========== Preferred Stock outstanding at liquidation preference, end of year (in thousands) $ 134,000 $ 134,000 $ 134,000 $ 134,000 $ 134,000 =========== =========== =========== =========== =========== Portfolio turnover 59% 43% 41% 48% 47% =========== =========== =========== =========== =========== Leverage Asset coverage per $1,000 $ 2,327 $ 2,387 $ 2,356 $ 2,391 $ 2,323 =========== =========== =========== =========== =========== Dividends Per Share on Preferred Stock Outstanding Series A--Investment income--net $ 686 $ 372 $ 225 $ 313 $ 502 =========== =========== =========== =========== =========== Series B--Investment income--net $ 672 $ 376 $ 228 $ 302 $ 491 =========== =========== =========== =========== =========== * Total investment returns based on market value, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Total investment returns exclude the effects of sales charges. ** Do not reflect the effect of dividends to Preferred Stock shareholders. ++ Based on average shares outstanding. See Notes to Financial Statements. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements 1. Significant Accounting Policies: MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. (the "Funds" or individually as the "Fund") are registered under the Investment Company Act of 1940, as amended, as non-diversified, closed-end management investment companies. The Funds' financial statements are prepared in conformity with U.S. generally accepted accounting principles, which may require the use of management accruals and estimates. Actual results may differ from these estimates. The Funds determine and make available for publication the net asset value of their Common Stock on a daily basis. The Funds' Common Stock shares are listed on the New York Stock Exchange under the symbols MHD and MUS, respectively. The following is a summary of significant accounting policies followed by the Funds. (a) Valuation of investments--Municipal bonds are traded primarily in the over- the-counter ("OTC") markets and are valued at the last available bid price in the OTC market or on the basis of values as obtained by a pricing service. Pricing services use valuation matrixes that incorporate both dealer-supplied valuations and valuation models. The procedures of the pricing service and its valuations are reviewed by the officers of the Funds under the general direction of the Board of Directors. Such valuations and procedures are reviewed periodically by the Board of Directors of the Funds. Financial futures contracts and options thereon, which are traded on exchanges, are valued at their closing prices as of the close of such exchanges. Options written or purchased are valued at the last sale price in the case of exchange- traded options. In the case of options traded in the OTC market, valuation is the last asked price (options written) or the last bid price (options purchased). Swap agreements are valued by quoted fair values received daily by the Fund's pricing service. Short-term investments with a remaining maturity of 60 days or less are valued at amortized cost, which approximates market value, under which method the investment is valued at cost and any premium or discount is amortized on a straight line basis to maturity. Investments in open-end investment companies are valued at their net asset value each business day. Securities and other assets for which market quotations are not readily available are valued at fair value as determined in good faith by or under the direction of the Board of Directors of the Funds. (b) Derivative financial instruments--Each Fund may engage in various portfolio investment strategies both to increase the return of the Fund and to hedge, or protect, its exposure to interest rate movements and movements in the securities markets. Losses may arise due to changes in the value of the contract or if the counterparty does not perform under the contract. * Financial futures contracts--Each Fund may purchase or sell financial futures contracts and options on such futures contracts. Futures contracts are contracts for delayed delivery of securities at a specific future date and at a specific price or yield. Upon entering into a contract, the Fund deposits and maintains as collateral such initial margin as required by the exchange on which the transaction is effected. Pursuant to the contract, the Fund agrees to receive from or pay to the broker an amount of cash equal to the daily fluctuation in value of the contract. Such receipts or payments are known as variation margin and are recorded by the Fund as unrealized gains or losses. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. * Options--Each Fund may write covered call options and purchase call and put options. When the Fund writes an option, an amount equal to the premium received by the Fund is reflected as an asset and an equivalent liability. The amount of the liability is subsequently marked-to-market to reflect the current market value of the option written. When a security is purchased or sold through an exercise of an option, the related premium paid (or received) is added to (or deducted from) the basis of the security acquired or deducted from (or added to) the proceeds of the security sold. When an option expires (or the Fund enters into a closing transaction), the Fund realizes a gain or loss on the option to the extent of the premiums received or paid (or gain or loss to the extent the cost of the closing transaction exceeds the premium paid or received). Written and purchased options are non-income producing investments. * Forward interest rate swaps--Each Fund may enter into forward interest rate swaps. In a forward interest rate swap, the Fund and the counterparty agree to make periodic net payments on a specified notional contract amount, commencing on a specified future effective date, unless terminated earlier. When the agreement is closed, the Fund records a realized gain or loss in an amount equal to the value of the agreement. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements (continued) (c) Municipal bonds held in trust--The Funds invest in leveraged residual certificates ("TOB Residuals") issued by tender option bond trusts ("TOBs"). A TOB is established by a third party sponsor forming a special purpose entity, into which a Fund, or an agent on behalf of the Fund, transfers municipal securities. A TOB typically issues two classes of beneficial interests: short- term floating rate certificates, which are sold to third party investors, and residual certificates, which are generally issued to the Fund which made the transfer or to affiliates of the Fund. Each Fund's transfers of the municipal securities to a TOB do not qualify for sale treatment under Statement of Financial Accounting Standards No. 140 "Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities," therefore the municipal securities deposited into a TOB are presented in the Funds' schedules of investments and the proceeds from the transactions are reported as a liability for trust certificates of the Funds. Similarly, proceeds from residual certificates issued to affiliates, if any, from the transaction are included in the liability for trust certificates. Interest income from the underlying security is recorded by the Funds on an accrual basis. Interest expense incurred on the secured borrowing and other expenses related to remarketing, administration and trustee services to a TOB are reported as expenses of a Fund. The floating rate certificates have interest rates that generally reset weekly and their holders have the option to tender certificates to the TOB for redemption at par at each reset date. The residual interests held by the Funds include the right of the Funds (1) to cause the holders of a proportional share of floating rate certificates to tender their certificates at par, and (2) to transfer a corresponding share of the municipal securities from the TOB to the Funds. At April 30, 2006, the aggregate value of the underlying municipal securities transferred to TOBs and the related liability for trust certificates were: Range of Interest Underlying Rates on Municipal Liability for the Liability Bonds Trust for Trust Transferred Certificates Certificates to TOBs MuniHoldings 3.60% - Fund, Inc. $16,822,500 3.61% $35,361,517 MuniHoldings Insured 3.60% - Fund, Inc. $15,460,000 3.63% $32,666,640 Financial transactions executed through TOBs generally will underperform the market for fixed rate municipal bonds in a rising interest rate environment, but tend to outperform the market for fixed rate bonds when interest rates decline or remain relatively stable. Should short-term interest rates rise, the Funds' investments in TOB Residuals likely will adversely affect the Funds' investment income - net and distributions to shareholders. Fluctuations in the market value of municipal securities deposited into the TOB may adversely affect the Funds' net asset value per share. While the Funds' investment policies and restrictions expressly permit investments in inverse floating rate securities such as TOB Residuals, they generally do not allow the Funds to borrow money for purposes of making investments. The Funds' management believes that the Funds' restrictions on borrowings do not apply to the secured borrowings deemed to have occurred for accounting purposes. (d) Income taxes--It is each Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute substantially all of its taxable income to its shareholders. Therefore, no federal income tax provision is required. (e) Security transactions and investment income--Security transactions are recorded on the dates the transactions are entered into (the trade dates). Realized gains and losses on security transactions are determined on the identified cost basis. Dividend income is recorded on the ex-dividend dates. Interest income is recognized on the accrual basis. The Funds amortize all premiums and discounts on debt securities. (f) Dividends and distributions--Dividends from net investment income are declared and paid monthly. Distributions of capital gains are recorded on the ex-dividend dates. (g) Offering costs for MuniHoldings Fund, Inc.--Direct expenses relating to the public offering of the Fund's Preferred Stock were charged to capital at the time of issuance of the shares. 2. Investment Advisory Agreement and Transactions with Affiliates: Each Fund has entered into an Investment Advisory Agreement with Fund Asset Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc. ("PSI"), an indirect, wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."), which is the limited partner. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements (continued) FAM is responsible for the management of each Fund's portfolio and provides the necessary personnel, facilities, equipment and certain other services necessary to the operations of the Fund. For such services, each Fund pays a monthly fee at an annual rate of .55% of the Fund's average weekly net assets, including proceeds from the issuance of Preferred Stock. The Investment Adviser has agreed to reimburse its management fee by the amount of management fees each Fund pays to FAM indirectly through their investment in the Merrill Lynch Institutional Tax-Exempt Fund. For the year ended April 30, 2006, FAM reimbursed the Funds in the amount of $18 and $1,279 relating to MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc., respectively. In addition, for MuniHoldings Insured Fund, Inc., the Investment Adviser has agreed to reimburse its management fee based on the proceeds of Preferred Stock that exceeds 35% of the Fund's total net assets. For the year ended April 30, 2006, FAM earned fees of $1,736,742, of which $195,570 was waived. Merrill Lynch, Pierce, Fenner & Smith Incorporated ("MLPF&S"), an affiliate of FAM, received commissions on the execution of portfolio security transactions for the year ended April 30, 2006 as follows: MuniHoldings Fund, Inc. $626 MuniHoldings Insured Fund, Inc. $621 For the year ended April 30, 2006, MLPF&S received underwriting fees of $150,000 in connection with the issuance of an additional Series of Preferred Stock for MuniHoldings Fund, Inc. For the year ended April 30, 2006, MuniHoldings Fund, Inc. purchased a security, subject to Rule 17a-7 under the Investment Company Act of 1940, from MuniYield Insured Fund, Inc., an affiliate of FAM. This resulted in an outstanding payable in the amount of $3,459,721. For the year ended April 30, 2006, MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. reimbursed FAM $7,841 and $7,235, respectively, for certain accounting services. Certain officers and/or directors of the Funds are officers and/or directors of FAM, PSI, and/or ML & Co. In February 2006, ML & Co. and BlackRock, Inc. entered into an agreement to contribute ML & Co.'s investment management business, including FAM, to the investment management business of BlackRock, Inc. The transaction closed on September 29, 2006. 3. Investments: Purchases and sales of investments, excluding short-term securities, for the year ended April 30, 2006 were as follows: MuniHoldings MuniHoldings Insured Fund, Inc. Fund, Inc. Total Purchases $177,369,874 $193,560,171 Total Sales $155,290,885 $194,811,540 4. Stock Transactions: Each Fund is authorized to issue 200,000,000 shares of stock, including Preferred Stock, par value $.10 per share, all of which were initially classified as Common Stock. The Board of Directors is authorized, however, to reclassify any unissued shares of stock without approval of holders of Common Stock. Common Stock MuniHoldings Fund, Inc. Shares issued and outstanding during the years ended April 30, 2006 and April 30, 2005 increased by 49,412 and 9,843, respectively, as a result of dividend reinvestment. MuniHoldings Insured Fund, Inc. Shares issued and outstanding during the year ended April 30, 2006 increased by 18,659 as a result of dividend reinvestment. Shares issued and outstanding during the year ended April 30, 2005 remained constant. Preferred Stock Auction Market Preferred Stock are shares of Preferred Stock of the Funds, with a par value of $.10 per share and a liquidation preference of $25,000 per share, plus accrued and unpaid dividends, that entitle their holders to receive cash dividends at an annual rate that may vary for the successive dividend periods. The yields in effect at April 30, 2006 were as follows: MuniHoldings MuniHoldings Insured Fund, Inc. Fund, Inc. Series A 3.60% 3.70% Series B 3.70% 3.71% Series C 3.69% -- MuniHoldings Fund, Inc. Shares issued and outstanding during the year ended April 30, 2006 increased by 600 from the issuance of an additional series of Preferred Stock. Shares issued and outstanding during the year ended April 30, 2005 remained constant. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements (continued) MuniHoldings Insured Fund, Inc. Shares issued and outstanding during the years ended April 30, 2006 and April 30, 2005 remained constant. Each Fund pays commissions to certain broker-dealers at the end of each auction at an annual rate ranging from .25% to .375%, calculated on the proceeds of each auction. For the year ended April 30, 2006, MLPF&S earned commissions as follows: Commissions MuniHoldings Fund, Inc. $181,639 MuniHoldings Insured Fund, Inc. $208,024 5. Distributions to Shareholders: Each Fund paid a tax-exempt income dividend to holders of Common Stock in the amounts of $.082000 per share and $.061000 per share relating to MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. respectively, on May 30, 2006 to shareholders of record on May 15, 2006. MuniHoldings Fund, Inc. The tax character of distributions paid during the fiscal years ended April 30, 2006 and April 30, 2005 was as follows: 4/30/2006 4/30/2005 Distributions paid from: Tax-exempt income $ 18,136,855 $ 17,511,074 --------------- --------------- Total distributions $ 18,136,855 $ 17,511,074 =============== =============== As of April 30, 2006, the components of accumulated earnings on a tax basis were as follows: Undistributed tax-exempt income--net $ 2,091,190 Undistributed long-term capital gains--net -- --------------- Total undistributed earnings--net 2,091,190 Capital loss carryforward (44,718)* Unrealized gains--net 15,267,166** --------------- Total accumulated earnings--net $ 17,313,638 =============== * On April 30, 2006, the Fund had a net capital loss carryforward of $44,718, all of which expires in 2009. This amount will be available to offset like amounts of any future taxable gains. ** The difference between book-basis and tax-basis net unrealized gains is attributable primarily to the tax deferral of losses on straddles, the difference between book and tax amortization methods for premiums and discounts on fixed income securities and the difference between the book and tax treatment of residual interests in tender option bond trusts. MuniHoldings Insured Fund, Inc. The tax character of distributions paid during the fiscal years ended April 30, 2006 and April 30, 2005 was as follows: 4/30/2006 4/30/2005 Distributions paid from: Tax-exempt income $ 14,356,284 $ 13,737,962 --------------- --------------- Total distributions $ 14,356,284 $ 13,737,962 =============== =============== As of April 30, 2006, the components of accumulated losses on a tax basis were as follows: Undistributed tax-exempt income--net $ 936,244 Undistributed long-term capital gains--net -- --------------- Total undistributed earnings--net 936,244 Capital loss carryforward (18,796,624)* Unrealized gains--net 3,895,270** --------------- Total accumulated losses--net $ (13,965,110) =============== * On April 30, 2006, the Fund had a net capital loss carryforward of $18,796,624, of which $8,922,900 expires in 2008, $9,580,044 expires in 2009 and $293,680 expires in 2013. This amount will be available to offset like amounts of any future taxable gains. ** The difference between book-basis and tax-basis net unrealized gains is attributable primarily to the tax deferral of losses on wash sales, the tax deferral of losses on straddles and the difference between the book and tax treatment of residual interests in tender option bond trusts. 6. Restatement Information: Subsequent to the issuance of their April 30, 2006 financial statements, the Funds determined that the criteria for sale accounting in Statement of Financial Accounting Standards No. 140 had not been met for certain transfers of municipal bonds, and that these transfers should have been accounted for as secured borrowings rather than as sales. Accordingly, the Funds have restated the Statements of Net Assets, including the Schedules of Investments, as of April 30, 2006, the Statements of Operations for the year then ended, the Statements of Changes in Net Assets for each of the two years in the period then ended, and certain financial highlights for each of the five years in the period then ended. The effects of the restatement were to record the transfers of the municipal bonds as secured borrowings, to give effect to offsetting changes in realized gain - net and in the change in unrealized appreciation/ depreciation - net on the transferred municipal securities and to give effect to interest on the bonds as interest income and interest on the secured borrowings as interest expense. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements (continued) MuniHoldings Fund, Inc. Statement of Net Assets As of April 30, 2006 Previously Reported Restated Investments in unaffiliated securities, at value $ 346,928,305 $ 363,750,805 Investments in unaffiliated securities, identified cost $ 331,856,177 $ 348,672,649 Interest receivable $ 5,898,861 $ 6,081,762 Total assets $ 357,123,233 $ 374,128,634 Trust certificates -- $ 16,822,500 Interest expense payable -- $ 182,901 Total liabilities $ 8,412,684 $ 25,418,085 Accumulated realized capital losses--net $ (166,753) $ (172,781) Unrealized appreciation--net $ 15,072,128 $ 15,078,156 Statement of Operations For the Year Ended April 30, 2006 Previously Reported Restated Interest income $ 18,644,907 $ 18,988,809 Total income $ 18,645,141 $ 18,989,043 Interest expense and fees -- $ 343,902 Total expenses before waiver and/or reimbursement $ 2,573,251 $ 2,917,153 Total expenses after waiver and/or reimbursement $ 2,573,233 $ 2,917,135 Realized gain (loss) on investments--net $ 3,393,460 $ 3,422,736 Total realized gain--net $ 3,393,460 $ 3,422,736 Change in unrealized appreciation/depreciation on investments--net $ (3,441,338) $ (3,470,614) Total change in unrealized appreciation/depreciation--net $ (3,441,338) $ (3,470,614) Statement of Changes in Net Assets For the Year Ended April 30, 2006 Previously Reported Restated Realized gain--net $ 3,393,460 $ 3,422,736 Change in unrealized appreciation/ depreciation--net $ (3,441,338) $ (3,470,614) Statement of Changes in Net Assets For the Year Ended April 30, 2005 Previously Reported Restated Realized gain--net $ 2,939,627 $ 2,939,797 Change in unrealized appreciation/ depreciation--net $ 8,533,658 $ 8,533,488 Financial Highlights For the Years Ended April 30, 2006, 2005, 2004, 2003 and 2002 2006 2005 2004 2003 2002 Previously Previously Previously Previously Previously Reported Restated Reported Restated Reported Restated Reported Restated Reported Restated Total expenses, net of reimbursement* 1.15% 1.30% 1.13% 1.15% 1.14% 1.23% 1.18% 1.37% 1.21% 1.46% Total expenses* 1.15% 1.30% 1.13% 1.15% 1.15% 1.24% 1.18% 1.37% 1.21% 1.46% Portfolio turnover 53.60% 45% 36.23% 34% 42.89% 41% 50.68% 46% 62.94% 56% * Do not reflect the effect of dividends to Preferred Stock shareholders. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements (continued) MuniHoldings Insured Fund, Inc. Statement of Net Assets As of April 30, 2006 Previously Reported Restated Investments in unaffiliated securities, at value $ 307,649,498 $ 323,109,498 Investments in unaffiliated securities, identified cost $ 301,849,062 $ 316,310,864 Interest receivable $ 4,681,552 $ 4,814,277 Total assets $ 317,689,852 $ 333,282,577 Trust certificates -- $ 15,460,000 Interest expense payable -- $ 132,725 Total liabilities $ 5,838,592 $ 21,431,317 Accumulated realized capital losses--net $ (20,701,790) $ (21,699,988) Unrealized appreciation--net $ 5,800,436 $ 6,798,634 Statement of Operations For the Year Ended April 30, 2006 Previously Reported Restated Interest income $ 14,755,351 $ 15,307,432 Total income $ 14,770,476 $ 15,322,557 Interest expense and fees -- $ 552,081 Total expenses before waiver and reimbursement $ 2,455,084 $ 3,007,165 Total expenses after waiver and reimbursement $ 2,258,235 $ 2,810,316 Realized gain (loss) on investments--net $ 3,115,377 $ 3,060,190 Total realized gain--net $ 2,414,485 $ 2,359,298 Change in unrealized appreciation/depreciation on investments--net $ (9,817,394) $ (9,762,207) Total change in unrealized appreciation/depreciation--net $ (8,871,610) $ (8,816,423) Statement of Changes in Net Assets For the Year Ended April 30, 2006 Previously Reported Restated Realized gain--net $ 2,414,485 $ 2,359,298 Change in unrealized appreciation/ depreciation--net $ (8,871,610) $ (8,816,423) Statement of Changes in Net Assets For the Year Ended April 30, 2005 Previously Reported Restated Realized gain--net $ 2,296,913 $ 1,298,936 Change in unrealized appreciation/ depreciation--net $ 2,511,721 $ 3,509,698 Financial Highlights Financial Highlights For the Years Ended April 30, 2006, 2005, 2004, 2003 and 2002 2006 2005 2004 2003 2002 Previously Previously Previously Previously Previously Reported Restated Reported Restated Reported Restated Reported Restated Reported Restated Total expenses, net of waiver and reimbursement** 1.24% 1.54% 1.24% 1.60% 1.24% 1.57% 1.28% 1.69% 1.30% 1.86% Total expenses** 1.35% 1.65% 1.35% 1.70% 1.34% 1.67% 1.38% 1.79% 1.39% 1.95% Portfolio turnover 63.53% 59% 51.81% 43% 39.94% 41% 49.59% 48% 49.69% 47% ** Do not reflect the effect of dividends to Preferred Stock shareholders. ANNUAL REPORTS APRIL 30, 2006 Notes to Financial Statements (concluded) While the Statements of Net Assets of the Funds as of April 30, 2005, 2004, 2003 and 2002, not presented herein, have not been reissued to give effect to the restatement, the principal effects of the restatement would be to increase investments and payable for trust certificates by corresponding amounts at each year, with no effect on previously reported net assets. The Statements of Operations of the Funds for the years ended April 30, 2005, 2004, 2003 and 2002, not presented herein, have not been reissued to give effect to the restatement. However, the principal effects of the restatement would be to increase interest income and interest expense and fees by corresponding amounts each year, and where applicable, to revise realized gain (loss) on investments - net, and the change in unrealized appreciation/ depreciation on investments - net, by corresponding and offsetting amounts. The Statements of Changes in Net Assets of the Funds for the years ended April 30, 2004, 2003 and 2002, not presented herein, have not been reissued to give effect to the restatement, but the principal effects of the restatement, where applicable, would be to revise previously reported realized gain (loss) on investments - net, and change in unrealized appreciation/depreciation - net, by corresponding and offsetting amounts. 7. Subsequent Event: On September 29, 2006, BlackRock, Inc. and ML & Co. combined ML & Co.'s investment management business, Merrill Lynch Investment Managers, L.P., and its affiliates, including FAM, with BlackRock, Inc. to create a new independent company. MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. were renamed BlackRock MuniHoldings Fund, Inc. and BlackRock MuniHoldings Insured Fund, Inc., respectively. On August 15, 2006, shareholders of each of these Funds approved a new Investment Advisory Agreement with BlackRock Advisors, Inc. (the "Manager"), an indirect, wholly owned subsidiary of BlackRock, Inc. BlackRock Advisors, Inc. was recently reorganized into a limited liability company and renamed BlackRock Advisors, LLC. The new Investment Advisory Agreement between MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. and the Manager became effective on September 29, 2006. ANNUAL REPORTS APRIL 30, 2006 Report of Independent Registered Public Accounting Firm To the Shareholders and Boards of Directors of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc.: We have audited the accompanying statements of net assets, including the schedules of investments, of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. (the "Funds") as of April 30, 2006, and the related statements of operations and changes in net assets and the financial highlights for the year then ended. These financial statements and financial highlights are the responsibility of the Funds' management. Our responsibility is to express an opinion on the financial statements and financial highlights of each of the Funds based on our audits. The statements of changes in net assets of the Funds for the year ended April 30, 2005 (before the restatement described in Note 6) and their financial highlights for each of the four years in the period ended April 30, 2005 (before the restatement described in Note 6) were audited by other auditors whose report, dated June 10, 2005, expressed a qualified opinion on these financial statements and financial highlights because of the errors described in Note 6. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Funds are not required to have, nor were we engaged to perform, an audit of their internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Funds' internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of April 30, 2006, by correspondence with the custodians and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. referred to above, present fairly, in all material respects, their financial position as of April 30, 2006, and the results of their operations, changes in their net assets and their financial highlights for the year then ended, in conformity with accounting principles generally accepted in the United States of America. As discussed in Note 6, the statements of net assets, including the schedules of investments as of April 30, 2006, and the related statements of operations, the statements of changes in net assets and the financial highlights of each of the Funds for the year then ended have been restated. We also have audited the adjustments, applied by management, to restate the statements of changes in net assets of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. for the year ended April 30, 2005 and certain financial highlights of each of the Funds for each of the four years in the period then ended, to correct the errors described in Note 6. These adjustments are the responsibility of the Funds' management. The audit procedures that we performed with respect to the adjustments included such tests as we considered necessary in the circumstances and were designed to obtain reasonable assurance about whether the adjustments are appropriate and have been properly applied, in all material respects, to the restated statements of changes in net assets for each of the Funds for the year ended April 30, 2005, and to the restated information in the financial highlights for each of the Funds for each of the four years in the period then ended. We did not perform any audit procedures designed to assess whether any additional adjustments or disclosures to the Funds' financial statements or financial highlights as of April 30, 2005, and for each of the four years in the period then ended, might be necessary in order for such financial statements or financial highlights to be presented in conformity with generally accepted accounting principles. In our opinion, the adjustments to the statements of changes in net assets of each of the Funds for the year ended April 30, 2005 and to their financial highlights for each of the four years in the period then ended, for the restatement described in Note 6 are appropriate and have been properly applied, in all material respects. However, we were not engaged to audit, review, or apply any procedures to the Funds' financial statements or financial highlights as of April 30, 2005, and for each of the four years in the period then ended, other than with respect to the adjustments to the Funds' statements of changes in net assets and their financial highlights for the restatement described in Note 6 and, accordingly, we do not express an opinion or any other form of assurance on the Funds' financial statements as of April 30, 2005, or on their financial highlights for the year then ended or for each of the four years in the period then ended. Deloitte & Touche LLP Princeton, New Jersey May 18, 2007 ANNUAL REPORTS APRIL 30, 2006 Report of Independent Registered Public Accounting Firm To the Shareholders and Board of Directors of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc.: We have audited, before the effects of the adjustments for the correction of the error described in Note 6, the accompanying statements of changes in net assets of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. for the year ended April 30, 2005, and financial highlights for each of the four years in the period then ended (the 2005 financial statement and financial highlights referred to above before the effects of the adjustments discussed in Note 6 are not presented herein). These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Fund's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, except for the error described in Note 6, the 2005 financial statements and financial highlights referred to above present fairly, in all material respects, the changes in net assets of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. for the year ended April 30, 2005, and their financial highlights for each of the four years in the period then ended, in conformity with U.S. generally accepted accounting principles. We were not engaged to audit, review, or apply any procedures to the adjustments for the correction of the error described in Note 6 and, accordingly, we do not express an opinion or any other form of assurance about whether such adjustments are appropriate and have been properly applied. Those adjustments were audited by Deloitte & Touche LLP. (Ernst & Young LLP) Philadelphia, Pennsylvania June 10, 2005 Fund Certification (unaudited) In September 2005, MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. filed their Chief Executive Officer Certification for the prior year with the New York Stock Exchange pursuant to Section 303A.12(a) of the New York Stock Exchange Corporate Governance Listing Standards. The Funds' Chief Executive Officer and Chief Financial Officer Certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 were filed with the Funds' Form N-CSR and are available on the Securities and Exchange Commission's Web site at http://www.sec.gov. Important Tax Information (unaudited) All of the net investment income distributions paid by MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. during the taxable year ended April 30, 2006 qualify as tax-exempt interest dividends for federal income tax purposes. ANNUAL REPORTS APRIL 30, 2006 Automatic Dividend Reinvestment Plan How the Plan Works--The Funds offer a Dividend Reinvestment Plan (the "Plan") under which income and capital gains dividends paid by each Fund are automatically reinvested in additional shares of Common Stock of each Fund. The Plan is administered on behalf of the shareholders by The Bank of New York (the "Plan Agent"). Under the Plan, whenever the Funds declare a dividend, participants in the Plan will receive the equivalent in shares of Common Stock of each Fund. The Plan Agent will acquire the shares for the participant's account either (i) through receipt of additional unissued but authorized shares of each Fund ("newly issued shares") or (ii) by purchase of outstanding shares of Common Stock on the open market on the New York Stock Exchange or elsewhere. If, on the dividend payment date, each Fund's net asset value per share is equal to or less than the market price per share plus estimated brokerage commissions (a condition often referred to as a "market premium"), the Plan Agent will invest the dividend amount in newly issued shares. If the Funds' net asset value per share is greater than the market price per share (a condition often referred to as a "market discount"), the Plan Agent will invest the dividend amount by purchasing on the open market additional shares. If the Plan Agent is unable to invest the full dividend amount in open market purchases, or if the market discount shifts to a market premium during the purchase period, the Plan Agent will invest any uninvested portion in newly issued shares. The shares acquired are credited to each shareholder's account. The amount credited is determined by dividing the dollar amount of the dividend by either (i) when the shares are newly issued, the net asset value per share on the date the shares are issued or (ii) when shares are purchased in the open market, the average purchase price per share. Participation in the Plan--Participation in the Plan is automatic, that is, a shareholder is automatically enrolled in the Plan when he or she purchases shares of Common Stock of the Funds unless the shareholder specifically elects not to participate in the Plan. Shareholders who elect not to participate will receive all dividend distributions in cash. Shareholders who do not wish to participate in the Plan, must advise the Plan Agent in writing (at the address set forth below) that they elect not to participate in the Plan. Participation in the Plan is completely voluntary and may be terminated or resumed at any time without penalty by writing to the Plan Agent. Benefits of the Plan--The Plan provides an easy, convenient way for shareholders to make additional, regular investments in the Funds. The Plan promotes a long-term strategy of investing at a lower cost. All shares acquired pursuant to the Plan receive voting rights. In addition, if the market price plus commissions of each Fund's shares is above the net asset value, participants in the Plan will receive shares of the Funds for less than they could otherwise purchase them and with a cash value greater than the value of any cash distribution they would have received. However, there may not be enough shares available in the market to make distributions in shares at prices below the net asset value. Also, since each Fund does not redeem shares, the price on resale may be more or less than the net asset value. Plan Fees--There are no enrollment fees or brokerage fees for participating in the Plan. The Plan Agent's service fees for handling the reinvestment of distributions are paid for by the Funds. However, brokerage commissions may be incurred when the Funds purchase shares on the open market and shareholders will pay a pro rata share of any such commissions. Tax Implications--The automatic reinvestment of dividends and distributions will not relieve participants of any federal, state or local income tax that may be payable (or required to be withheld) on such dividends. Therefore, income and capital gains may still be realized even though shareholders do not receive cash. Participation in the Plan generally will not effect the tax- exempt status of exempt interest dividends paid by the Fund. If, when the Funds' shares are trading at a market premium, the Funds issue shares pursuant to the Plan that have a greater fair market value than the amount of cash reinvested, it is possible that all or a portion of the discount from the market value (which may not exceed 5% of the fair market value of each Fund's shares) could be viewed as a taxable distribution. If the discount is viewed as a taxable distribution, it is also possible that the taxable character of this discount would be allocable to all the shareholders, including shareholders who do not participate in the Plan. Thus, shareholders who do not participate in the Plan might be required to report as ordinary income a portion of their distributions equal to their allocable share of the discount. Contact Information--All correspondence concerning the Plan, including any questions about the Plan, should be directed to the Plan Agent at The Bank of New York, Church Street Station, P.O. Box 11258, New York, NY 10286-1258, Telephone: 800-432-8224. ANNUAL REPORTS APRIL 30, 2006 Disclosure of Investment Advisory Agreement Activities of and Composition of the Boards of Directors All but one member of each Fund's Board of Directors is an independent director whose only affiliation with Fund Asset Management, L.P. (the "Investment Adviser") or other Merrill Lynch affiliates is as a director of each Fund and as a trustee or director of certain other funds advised by the Investment Adviser or its affiliates. The Chairman of the Boards is also an independent director. New director nominees are chosen as nominees by a Nominating Committee comprised of independent directors. All independent directors also are members of each Board's Audit Committee and the independent directors meet in executive session at each in-person Board meeting. Each Board and each Audit Committee meet in person for at least two days each quarter and conduct other in-person and telephone meetings throughout the year, some of which are formal board meetings, and some of which are informational meetings. The independent counsel to the independent directors attends all in-person Board and Audit Committee meetings and other meetings at the independent directors' request. Investment Advisory Agreements--Matters Considered by the Boards Every year, each Board considers approval of each Fund's investment advisory agreement (the "Investment Advisory Agreement"). Each Board assesses the nature, scope and quality of the services provided to each Fund by the personnel of the Investment Adviser and its affiliates, including administrative services, shareholder services, oversight of fund accounting, marketing services and assistance in meeting legal and regulatory requirements. Each Board also receives and assesses information regarding the services provided to the Fund by certain unaffiliated service providers. At various times throughout the year, each Board also considers a range of information in connection with its oversight of the services provided by the Investment Adviser and its affiliates. Among the matters considered are: (a) fees (in addition to management fees) paid to the Investment Adviser and its affiliates by each Fund; (b) Fund operating expenses paid to third parties; (c) the resources devoted to and compliance reports relating to each Fund's investment objective, policies and restrictions, and its compliance with its Code of Ethics and the Investment Adviser's compliance policies and procedures; and (d) the nature, cost and character of non-investment management services provided by the Investment Adviser and its affiliates. Each Board believes that the Investment Adviser is one of the most experienced global asset management firms and considers the overall services provided by the Investment Adviser to be of high quality. Each Board also believes that the Investment Adviser is financially sound and well managed and notes that the Investment Adviser is affiliated with one of America's largest financial firms. Each Board works closely with the Investment Adviser in overseeing the Investment Adviser's efforts to achieve good performance. As part of this effort, each Board discusses portfolio manager effectiveness and, when performance is not satisfactory, discusses with the Investment Adviser taking steps such as changing investment personnel. Annual Consideration of Approvals by the Boards of Directors In the period prior to the Board meeting to consider renewal of the Investment Advisory Agreement, each Board requests and receives materials specifically relating to the Fund's Investment Advisory Agreement. These materials are prepared separately for each Fund, and include (a) information compiled by Lipper Inc. ("Lipper") on the fees and expenses, investment performance and leverage of the Fund as compared to a comparable group of funds as classified by Lipper; (b) information comparing each Fund's market price with its net asset value per share; (c) a discussion by each Fund's portfolio management team of investment strategies used by the Fund during its most recent fiscal year; (d) information on the profitability to the Investment Adviser and its affiliates of the Investment Advisory Agreement and other relationships with the Fund; and (e) information provided by the Investment Adviser concerning investment advisory fees charged to other retail closed-end funds under similar investment mandates. Each Board also considers other matters it deems important to the approval process, such as payments made for services related to the valuation and pricing of Fund portfolio holdings, the Fund's portfolio turnover statistics, and direct and indirect benefits to the Investment Adviser and its affiliates from their relationship with the Fund. The Boards did not identify any particular information as controlling, and each member of the Boards may have attributed different weights to the various items considered. Certain Specific Renewal Data In connection with the most recent renewal of each Fund's Investment Advisory Agreement in November 2005, the independent directors' and Boards' review included the following: ANNUAL REPORTS APRIL 30, 2006 Investment Adviser's Services and Fund Performance--Each Board reviewed the nature, extent and quality of services provided by the Investment Adviser, including the investment advisory services and the resulting performance of each Fund. The Boards focused primarily on the Investment Adviser's investment advisory services and each Fund's investment performance. Each Board compared Fund performance - both including and excluding the effects of each Fund's fees and expenses - to the performance of a comparable group of funds. While each Board reviews performance data quarterly, consistent with the Investment Adviser's investment goals, each Board attaches primary importance to performance over relatively long periods of time, typically three to five years. Relative to closed-end leveraged general municipal debt funds deemed comparable by the Investment Adviser, the Board noted that for the period ended August 31, 2005, MuniHoldings Fund, Inc.'s performance for the one-, three- and five-year periods ranked in the first quintile. The Board also reviewed the Fund's performance based on annualized yields and noted that the Fund ranked in the first quintile for the past three years ended August 31, 2005, and in the third quintile for the prior year. Relative to closed-end leveraged insured municipal debt funds deemed comparable by the Investment Adviser, the Board noted that MuniHoldings Insured Fund, Inc.'s performance ranked in the fifth quintile for the one-year period, in the second quintile for the three-year period, and in the first quintile for the five-year period, ended August 31, 2005. The Board also noted the Fund's performance based on annualized yields and noted that the Fund ranked in the fifth quintile for the one-year period ended August 31, 2005, and in the second quintile for the two prior years. The Board concluded that each Fund's performance supported the continuation of the Investment Advisory Agreement. The Investment Adviser's Personnel and Investment Process--At least annually, each Board reviews each Fund's investment objectives and strategies. The Boards discussed with senior management of the Investment Adviser responsible for investment operations and the senior management of the Investment Adviser's municipal investing group the strategies being used to achieve the stated objectives. Among other things, each Board considered the size, education and experience of the Investment Adviser's investment staff, its use of technology, and the Investment Adviser's approach to training and retaining portfolio managers and other research, advisory and management personnel. Each Board also reviewed the Investment Adviser's compensation policies and practices with respect to the Funds' portfolio manager. The Board also considered the experience of the Funds' portfolio manager and noted that Mr. DiMella has over 13 years of experience investing in municipal securities. The Board concluded that the Investment Adviser and its investment staff and each Fund's management team have extensive experience in analyzing and managing the type of investment used by each Fund and that each Fund benefits from that experience. Management Fees and Other Expenses--Each Board reviews the Fund's contractual management fee rate and actual management fee rate as a percentage of total assets at common asset levels - the actual rate includes advisory and administrative service fees and the effects of any fee waivers - compared to the other funds considered comparable by Lipper. It also compares the Fund's total expenses to those of other comparable funds of the Investment Adviser. The Board noted that investment advisory fees charged to each of the Funds was equal to or slightly more than the fees charged to other retail closed-end funds of the Investment Adviser. With respect to MuniHoldings Fund, Inc., the Board noted that that the contractual and actual management fee rates and total expense ratio were below the median fees charged by comparable funds, as determined by Lipper. With respect to MuniHoldings Insured Fund, Inc., the Board noted that contractual management fee rate was equal to the median fee charged by comparable funds, as determined by Lipper, while the actual management fee rate and actual total expense ratio were higher than the median fees charged by such comparable funds. Each Board concluded that the Fund's management fee and fee rate and overall expense ratio (taking into account the fee waiver agreement applicable to MuniHoldings Insured Fund, Inc.) are reasonable compared to those of other comparable funds. Profitability--Each Board considered the cost of the services provided to the Fund by the Investment Adviser, and the Investment Adviser's and its affiliates' profits relating to the management of the Fund and the MLIM/FAM- advised funds. As part of its analysis, each Board reviewed the Investment Adviser's methodology in allocating its costs to the management of the Fund and concluded that there was a reasonable basis for the allocation. The Boards also considered federal court decisions discussing an investment adviser's profitability and profitability levels considered to be reasonable in those decisions. Each Board concluded that the Investment Adviser's profits are acceptable in relation to the nature and quality of services provided and given the level of fees and expenses overall. ANNUAL REPORTS APRIL 30, 2006 Disclosure of Investment Advisory Agreement (concluded) Economies of Scale--Each Board considered the extent to which economies of scale might be realized as the assets of a Fund increase and whether there should be changes in the management fee rate or structure in order to enable the Fund to participate in these economies of scale. Each Board considered economies of scale to the extent applicable to each Fund's closed-end structure and determined that each Fund appropriately benefits from any economies of scale and no changes were currently necessary. Conclusion After the independent directors deliberated in executive session, each entire Board, including all of the independent directors, approved the renewal of the existing Investment Advisory Agreement, concluding that the advisory fee, taking into account the fee waiver applicable to MuniHoldings Insured Fund, Inc., was reasonable in relation to the services provided and that a contract renewal was in the best interests of the shareholders. Officers and Directors Number of Portfolios in Other Public Position(s) Length of Fund Complex Directorships Held with Time Overseen by Held by Name, Address & Age Fund Served Principal Occupation(s) During Past 5 Years Director Director Interested Director Robert C. Doll, Jr.* President 2005 to President of the MLIM/FAM-advised funds since 131 Funds None P.O. Box 9011 and present 2005; President of MLIM and FAM since 2001; 177 Portfolios Princeton, Director Co-Head (Americas Region) thereof from 2000 NJ 08543-9011 to 2001 and Senior Vice President from 1999 Age: 51 to 2001; President and Director of Princeton Services, Inc. ("Princeton Services") since 2001; President of Princeton Administrators, L.P. ("Princeton Administrators") since 2001; Chief Investment Officer of OppenheimerFunds, Inc. in 1999 and Executive Vice President thereof from 1991 to 1999. * Mr. Doll is a director, trustee or member of an advisory board of certain other investment companies for which MLIM or FAM acts as investment adviser. Mr. Doll is an "interested person," as defined in the Investment Company Act, of the Fund based on his positions with MLIM, FAM, Princeton Services and Princeton Administrators. Directors serve until their resignation, removal or death, or until December 31 of the year in which they turn 72. As Fund President, Mr. Doll serves at the pleasure of the Board of Directors. ANNUAL REPORTS APRIL 30, 2006 Officers and Directors (continued) Number of Portfolios in Other Public Position(s) Length of Fund Complex Directorships Held with Time Overseen by Held by Name, Address & Age Fund Served Principal Occupation(s) During Past 5 Years Director Director Independent Directors* Ronald W. Forbes** Director 1997 (MHD) Professor Emeritus of Finance, School of 49 Funds None P.O. Box 9095 and 1998 Business, State University of New York at 50 Portfolios Princeton, (MUS) to Albany since 2000 and Professor thereof from NJ 08543-9095 present 1989 to 2000; International Consultant, Urban Age: 65 Institute, Washington, D.C. from 1995 to 1999. Cynthia A. Montgomery Director 1997 (MHD) Professor, Harvard Business School since 49 Funds Newell P.O. Box 9095 and 1998 1989; Associate Professor, J.L. Kellogg 50 Portfolios Rubbermaid, Inc. Princeton, (MUS) to Graduate School of Management, Northwestern (manufacturing) NJ 08543-9095 present University from 1985 to 1989; Associate Age: 53 Professor, Graduate School of Business Administration, University of Michigan from 1979 to 1985; Director, Harvard Business School Publishing since 2005; Director, McLean Hospital since 2005. Jean Margo Reid Director 2004 to Self-employed consultant since 2001; Counsel 49 Funds None P.O. Box 9095 present of Alliance Capital Management (investment 50 Portfolios Princeton, adviser) in 2000; General Counsel, Director NJ 08543-9095 and Secretary of Sanford C. Bernstein & Co., Age: 60 Inc. (investment adviser/broker-dealer) from 1997 to 2000; Secretary, Sanford C. Bernstein Fund, Inc. from 1994 to 2000; Director and Secretary of SCB, Inc. since 1998; Director and Secretary of SCB Partners, Inc. since 2000; and Director of Covenant House from 2001 to 2004. Roscoe S. Suddarth Director 2000 to President, Middle East Institute, from 1995 49 Funds None P.O. Box 9095 present to 2001; Foreign Service Officer, United 50 Portfolios Princeton, States Foreign Service, from 1961 to 1995 NJ 08543-9095 and Career Minister from 1989 to 1995; Deputy Age: 70 Inspector General, U.S. Department of State, from 1991 to 1994; U.S. Ambassador to the Hashemite Kingdom of Jordan from 1987 to 1990. Richard R. West Director 1997 (MHD) Professor of Finance from 1984 to 1995, 49 Funds Bowne & Co., P.O. Box 9095 and 1998 Dean from 1984 to 1993 and since 1995 50 Portfolios Inc. (financial Princeton, (MUS) to Dean Emeritus of New York University's printers); NJ 08543-9095 present Leonard N. Stern School of Business Vornado Realty Age: 68 Administration. Trust (real estate company); Alexander's, Inc. (real estate company) Edward D. Zinbarg Director 2000 to Self-employed financial consultant since 49 Funds None P.O. Box 9095 present 1994; Executive Vice President of the 50 Portfolios Princeton, Prudential Insurance Company of America from NJ 08543-9095 1988 to 1994; Former Director of Prudential Age: 71 Reinsurance Company and former Trustee of the Prudential Foundation. * Directors serve until their resignation, removal or death, or until December 31 of the year in which they turn 72. ** Chairman of the Board of Directors and the Audit Committee. ANNUAL REPORTS APRIL 30, 2006 Officers and Directors (concluded) Position(s) Length of Held with Time Name, Address & Age Fund Served Principal Occupation(s) During Past 5 Years Fund Officers* Donald C. Burke Vice 1997 (MHD) First Vice President of MLIM and FAM since 1997 and Treasurer thereof since 1999; P.O. Box 9011 President and 1998 Senior Vice President and Treasurer of Princeton Services since 1999 and Director Princeton, and (MUS) to since 2004; Vice President of FAM Distributors, Inc. ("FAMD") since 1999 and NJ 08543-9011 Treasurer present Director since 2004; Vice President of MLIM and FAM from 1990 to 1997; Director Age: 45 and 1999 of Taxation of MLIM from 1990 to 2001; Vice President, Treasurer and Secretary of to present the IQ Funds since 2004. Kenneth A. Jacob Senior 2002 to Managing Director of MLIM since 2000; Director of MLIM from 1997 to 2000. P.O. Box 9011 Vice present Princeton, President NJ 08543-9011 Age: 55 John M. Loffredo Senior 2002 to Managing Director of MLIM since 2000; Director of MLIM from 1997 to 2000. P.O. Box 9011 Vice present Princeton, President NJ 08543-9011 Age: 42 Robert A. DiMella Vice 1997 (MHD) Managing Director of MLIM since 2004; Director of MLIM from 2002 to 2004; P.O. Box 9011 President and 1999 Vice President of MLIM from 1996 to 2001. Princeton, (MUS) to NJ 08543-9011 present Age: 39 Jeffrey Hiller Chief 2004 to Chief Compliance Officer of the MLIM/FAM-advised funds and First Vice President P.O. Box 9011 Compliance present and Chief Compliance Officer of MLIM (Americas Region) since 2004; Chief Princeton, Officer Compliance Officer of the IQ Funds since 2004; Global Director of Compliance at NJ 08543-9011 Morgan Stanley Investment Management from 2002 to 2004; Managing Director Age: 54 and Global Director of Compliance at Citigroup Asset Management from 2000 to 2002; Chief Compliance Officer at Soros Fund Management in 2000; Chief Compliance Officer at Prudential Financial from 1995 to 2000; Senior Counsel in the Commission's Securities and Exchange Division of Enforcement in Washington, D.C. from 1990 to 1995. Alice A. Pellegrino Secretary 2004 to Director (Legal Advisory) of MLIM since 2002; Vice President of MLIM from 1999 to P.O. Box 9011 present 2002; Attorney associated with MLIM since 1997; Secretary of MLIM, FAM, FAMD Princeton, and Princeton Services since 2004. NJ 08543-9011 Age: 46 * Officers of the Funds serve at the pleasure of the Board of Directors. Custodian The Bank of New York 100 Church Street New York, NY 10286 Transfer Agents Common Stock: The Bank of New York 101 Barclay Street - 11 East New York, NY 10286 Preferred Stock: The Bank of New York 101 Barclay Street - 7 West New York, NY 10286 NYSE Symbols MHD MuniHoldings Fund, Inc. MUS MuniHoldings Insured Fund, Inc. Effective January 1, 2007, Edward D. Zinbarg retired as a Trustee/Director of MuniHoldings Fund, Inc. and MuniHoldings Insured Fund, Inc. The Funds' Boards of Trustees/Directors wish Mr. Zinbarg well in his retirement. Effective April 13, 2007, Jeffrey Hiller resigned his position as Chief Compliance Officer of the Funds. Also effective April 13, 2007, Karen Clark was appointed Chief Compliance Officer of the Funds. Ms. Clark has been a Managing Director of BlackRock, Inc. since 2007. She was a Director thereof from 2005 to 2007. Prior to that, Ms. Clark was a principal and senior compliance officer at State Street Global Advisors from 2001 to 2005. Ms. Clark was a principal consultant with PricewaterhouseCoopers, LLP from 1998 to 2001. From 1993 to 1998, Ms. Clark was Branch Chief, Division of Investment Management and Office of Compliance Inspections and Examinations, with the U.S. Securities and Exchange Commission. ANNUAL REPORTS APRIL 30, 2006 Availability of Quarterly Schedule of Investments The Funds file their complete schedules of portfolio holdings with the Securities and Exchange Commission ("SEC") for the first and third quarters of each fiscal year on Form N-Q. The Funds' Forms N-Q are available on the SEC's Web site at http://www.sec.gov. The Funds' Forms N-Q may also be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Electronic Delivery The Funds offer electronic delivery of communications to their shareholders. In order to receive this service, you must register your account and provide us with e-mail information. To sign up for this service, simply access this Web site at http://www.icsdelivery.com/live and follow the instructions. When you visit this site, you will obtain a personal identification number (PIN). You will need this PIN should you wish to update your e-mail address, choose to discontinue this service and/or make any other changes to the service. This service is not available for certain retirement accounts at this time. ANNUAL REPORTS APRIL 30, 2006 Item 2 - Code of Ethics - The registrant has adopted a code of ethics, as of the end of the period covered by this report, that applies to the registrant's principal executive officer, principal financial officer and principal accounting officer, or persons performing similar functions. A copy of the code of ethics is available without charge at www.blackrock.com. Item 3 - Audit Committee Financial Expert - The registrant's board of directors has determined that (i) the registrant has the following audit committee financial experts serving on its audit committee and (ii) each audit committee financial expert is independent: (1) Ronald W. Forbes, (2) Richard R. West, and (3) Edward D. Zinbarg (retired as of December 31, 2006). Item 4 - Principal Accountant Fees and Services (a) Audit Fees - Fiscal Year Ending April 30, 2006 - $34,000 Fiscal Year Ending April 30, 2005 - $32,000 (b) Audit-Related Fees - Fiscal Year Ending April 30, 2006 - $3,500 Fiscal Year Ending April 30, 2005 - $3,500 The nature of the services include assurance and related services reasonably related to the performance of the audit of financial statements not included in Audit Fees. (c) Tax Fees - Fiscal Year Ending April 30, 2006 - $6,000 Fiscal Year Ending April 30, 2005 - $5,700 The nature of the services include tax compliance, tax advice and tax planning. (d) All Other Fees - Fiscal Year Ending April 30, 2006 - $0 Fiscal Year Ending April 30, 2005 - $0 (e)(1) The registrant's audit committee (the "Committee") has adopted policies and procedures with regard to the pre-approval of services. Audit, audit-related and tax compliance services provided to the registrant on an annual basis require specific pre-approval by the Committee. The Committee also must approve other non-audit services provided to the registrant and those non-audit services provided to the registrant's affiliated service providers that relate directly to the operations and the financial reporting of the registrant. Certain of these non-audit services that the Committee believes are a) consistent with the SEC's auditor independence rules and b) routine and recurring services that will not impair the independence of the independent accountants may be approved by the Committee without consideration on a specific case-by-case basis ("general pre-approval"). However, such services will only be deemed pre-approved provided that any individual project does not exceed $5,000 attributable to the registrant or $50,000 for all of the registrants the Committee oversees. Any proposed services exceeding the pre-approved cost levels will require specific pre- approval by the Committee, as will any other services not subject to general pre-approval (e.g., unanticipated but permissible services). The Committee is informed of each service approved subject to general pre-approval at the next regularly scheduled in-person board meeting. (e)(2) 0% (f) Not Applicable (g) Fiscal Year Ending April 30, 2006 - $9,500 Fiscal Year Ending April 30, 2005 - $9,200 (h) The registrant's audit committee has considered and determined that the provision of non-audit services that were rendered to the registrant's investment adviser and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre- approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. Regulation S-X Rule 2-01(c)(7)(ii) - $0, 0% Item 5 - Audit Committee of Listed Registrants - The following individuals are members of the registrant's separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)): Ronald W. Forbes Cynthia A. Montgomery Jean Margo Reid Roscoe S. Suddarth Richard R. West Edward D. Zinbarg (retired as of December 31, 2006) Item 6 - Schedule of Investments - Not Applicable Item 7 - Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies - Proxy Voting Policies and Procedures ------------------------------------ Each Fund's Board of Directors/Trustees has delegated to Merrill Lynch Investment Managers, L.P. and/or Fund Asset Management, L.P. (the "Investment Adviser") authority to vote all proxies relating to the Fund's portfolio securities. The Investment Adviser has adopted policies and procedures ("Proxy Voting Procedures") with respect to the voting of proxies related to the portfolio securities held in the account of one or more of its clients, including a Fund. Pursuant to these Proxy Voting Procedures, the Investment Adviser's primary objective when voting proxies is to make proxy voting decisions solely in the best interests of each Fund and its shareholders, and to act in a manner that the Investment Adviser believes is most likely to enhance the economic value of the securities held by the Fund. The Proxy Voting Procedures are designed to ensure that that the Investment Adviser considers the interests of its clients, including the Funds, and not the interests of the Investment Adviser, when voting proxies and that real (or perceived) material conflicts that may arise between the Investment Adviser's interest and those of the Investment Adviser's clients are properly addressed and resolved. In order to implement the Proxy Voting Procedures, the Investment Adviser has formed a Proxy Voting Committee (the "Committee"). The Committee is comprised of the Investment Adviser's Chief Investment Officer (the "CIO"), one or more other senior investment professionals appointed by the CIO, portfolio managers and investment analysts appointed by the CIO and any other personnel the CIO deems appropriate. The Committee will also include two non- voting representatives from the Investment Adviser's Legal department appointed by the Investment Adviser's General Counsel. The Committee's membership shall be limited to full-time employees of the Investment Adviser. No person with any investment banking, trading, retail brokerage or research responsibilities for the Investment Adviser's affiliates may serve as a member of the Committee or participate in its decision making (except to the extent such person is asked by the Committee to present information to the Committee, on the same basis as other interested knowledgeable parties not affiliated with the Investment Adviser might be asked to do so). The Committee determines how to vote the proxies of all clients, including a Fund, that have delegated proxy voting authority to the Investment Adviser and seeks to ensure that all votes are consistent with the best interests of those clients and are free from unwarranted and inappropriate influences. The Committee establishes general proxy voting policies for the Investment Adviser and is responsible for determining how those policies are applied to specific proxy votes, in light of each issuer's unique structure, management, strategic options and, in certain circumstances, probable economic and other anticipated consequences of alternate actions. In so doing, the Committee may determine to vote a particular proxy in a manner contrary to its generally stated policies. In addition, the Committee will be responsible for ensuring that all reporting and recordkeeping requirements related to proxy voting are fulfilled. The Committee may determine that the subject matter of a recurring proxy issue is not suitable for general voting policies and requires a case-by-case determination. In such cases, the Committee may elect not to adopt a specific voting policy applicable to that issue. The Investment Adviser believes that certain proxy voting issues require investment analysis - such as approval of mergers and other significant corporate transactions - akin to investment decisions, and are, therefore, not suitable for general guidelines. The Committee may elect to adopt a common position for the Investment Adviser on certain proxy votes that are akin to investment decisions, or determine to permit the portfolio manager to make individual decisions on how best to maximize economic value for a Fund (similar to normal buy/sell investment decisions made by such portfolio managers). While it is expected that the Investment Adviser will generally seek to vote proxies over which the Investment Adviser exercises voting authority in a uniform manner for all the Investment Adviser's clients, the Committee, in conjunction with a Fund's portfolio manager, may determine that the Fund's specific circumstances require that its proxies be voted differently. To assist the Investment Adviser in voting proxies, the Committee has retained Institutional Shareholder Services ("ISS"). ISS is an independent adviser that specializes in providing a variety of fiduciary-level proxy-related services to institutional investment managers, plan sponsors, custodians, consultants, and other institutional investors. The services provided to the Investment Adviser by ISS include in-depth research, voting recommendations (although the Investment Adviser is not obligated to follow such recommendations), vote execution, and recordkeeping. ISS will also assist the Fund in fulfilling its reporting and recordkeeping obligations under the Investment Company Act. The Investment Adviser's Proxy Voting Procedures also address special circumstances that can arise in connection with proxy voting. For instance, under the Proxy Voting Procedures, the Investment Adviser generally will not seek to vote proxies related to portfolio securities that are on loan, although it may do so under certain circumstances. In addition, the Investment Adviser will vote proxies related to securities of foreign issuers only on a best efforts basis and may elect not to vote at all in certain countries where the Committee determines that the costs associated with voting generally outweigh the benefits. The Committee may at any time override these general policies if it determines that such action is in the best interests of a Fund. From time to time, the Investment Adviser may be required to vote proxies in respect of an issuer where an affiliate of the Investment Adviser (each, an "Affiliate"), or a money management or other client of the Investment Adviser (each, a "Client") is involved. The Proxy Voting Procedures and the Investment Adviser's adherence to those procedures are designed to address such conflicts of interest. The Committee intends to strictly adhere to the Proxy Voting Procedures in all proxy matters, including matters involving Affiliates and Clients. If, however, an issue representing a non-routine matter that is material to an Affiliate or a widely known Client is involved such that the Committee does not reasonably believe it is able to follow its guidelines (or if the particular proxy matter is not addressed by the guidelines) and vote impartially, the Committee may, in its discretion for the purposes of ensuring that an independent determination is reached, retain an independent fiduciary to advise the Committee on how to vote or to cast votes on behalf of the Investment Adviser's clients. In the event that the Committee determines not to retain an independent fiduciary, or it does not follow the advice of such an independent fiduciary, the powers of the Committee shall pass to a subcommittee, appointed by the CIO (with advice from the Secretary of the Committee), consisting solely of Committee members selected by the CIO. The CIO shall appoint to the subcommittee, where appropriate, only persons whose job responsibilities do not include contact with the Client and whose job evaluations would not be affected by the Investment Adviser's relationship with the Client (or failure to retain such relationship). The subcommittee shall determine whether and how to vote all proxies on behalf of the Investment Adviser's clients or, if the proxy matter is, in their judgment, akin to an investment decision, to defer to the applicable portfolio managers, provided that, if the subcommittee determines to alter the Investment Adviser's normal voting guidelines or, on matters where the Investment Adviser's policy is case-by-case, does not follow the voting recommendation of any proxy voting service or other independent fiduciary that may be retained to provide research or advice to the Investment Adviser on that matter, no proxies relating to the Client may be voted unless the Secretary, or in the Secretary's absence, the Assistant Secretary of the Committee concurs that the subcommittee's determination is consistent with the Investment Adviser's fiduciary duties In addition to the general principles outlined above, the Investment Adviser has adopted voting guidelines with respect to certain recurring proxy issues that are not expected to involve unusual circumstances. These policies are guidelines only, and the Investment Adviser may elect to vote differently from the recommendation set forth in a voting guideline if the Committee determines that it is in a Fund's best interest to do so. In addition, the guidelines may be reviewed at any time upon the request of a Committee member and may be amended or deleted upon the vote of a majority of Committee members present at a Committee meeting at which there is a quorum. The Investment Adviser has adopted specific voting guidelines with respect to the following proxy issues: * Proposals related to the composition of the Board of Directors of issuers other than investment companies. As a general matter, the Committee believes that a company's Board of Directors (rather than shareholders) is most likely to have access to important, nonpublic information regarding a company's business and prospects, and is therefore best-positioned to set corporate policy and oversee management. The Committee, therefore, believes that the foundation of good corporate governance is the election of qualified, independent corporate directors who are likely to diligently represent the interests of shareholders and oversee management of the corporation in a manner that will seek to maximize shareholder value over time. In individual cases, the Committee may look at a nominee's history of representing shareholder interests as a director of other companies or other factors, to the extent the Committee deems relevant. * Proposals related to the selection of an issuer's independent auditors. As a general matter, the Committee believes that corporate auditors have a responsibility to represent the interests of shareholders and provide an independent view on the propriety of financial reporting decisions of corporate management. While the Committee will generally defer to a corporation's choice of auditor, in individual cases, the Committee may look at an auditors' history of representing shareholder interests as auditor of other companies, to the extent the Committee deems relevant. * Proposals related to management compensation and employee benefits. As a general matter, the Committee favors disclosure of an issuer's compensation and benefit policies and opposes excessive compensation, but believes that compensation matters are normally best determined by an issuer's board of directors, rather than shareholders. Proposals to "micro-manage" an issuer's compensation practices or to set arbitrary restrictions on compensation or benefits will, therefore, generally not be supported. * Proposals related to requests, principally from management, for approval of amendments that would alter an issuer's capital structure. As a general matter, the Committee will support requests that enhance the rights of common shareholders and oppose requests that appear to be unreasonably dilutive. * Proposals related to requests for approval of amendments to an issuer's charter or by-laws. As a general matter, the Committee opposes poison pill provisions. * Routine proposals related to requests regarding the formalities of corporate meetings. * Proposals related to proxy issues associated solely with holdings of investment company shares. As with other types of companies, the Committee believes that a fund's Board of Directors (rather than its shareholders) is best-positioned to set fund policy and oversee management. However, the Committee opposes granting Boards of Directors authority over certain matters, such as changes to a fund's investment objective, that the Investment Company Act envisions will be approved directly by shareholders. * Proposals related to limiting corporate conduct in some manner that relates to the shareholder's environmental or social concerns. The Committee generally believes that annual shareholder meetings are inappropriate forums for discussion of larger social issues, and opposes shareholder resolutions "micromanaging" corporate conduct or requesting release of information that would not help a shareholder evaluate an investment in the corporation as an economic matter. While the Committee is generally supportive of proposals to require corporate disclosure of matters that seem relevant and material to the economic interests of shareholders, the Committee is generally not supportive of proposals to require disclosure of corporate matters for other purposes. Item 8 - Portfolio Managers of Closed-End Management Investment Companies - as of April 30, 2006. (a)(1) Mr. Robert A. DiMella is primarily responsible for the day- to-day management of the registrant's portfolio ("Portfolio Manager"). Mr. DiMella has been a portfolio manager with MLIM since 1997, was a Vice President of MLIM from 1997 to 2001, was a Director (Tax-Exempt Fund Management) of MLIM from 2002 to 2004, has been a Managing Director of MLIM since 2004 and has 16 years of experience investing in Municipal Bonds as a portfolio manager on behalf of registered investment companies. He has been the portfolio manager and a Vice President of the Fund since 1999. (a)(2) As of April 30, 2006: (iii) Number of Other Accounts and (ii) Number of Other Accounts Managed Assets for Which Advisory Fee is and Assets by Account Type Performance-Based Other Other (i) Name of Registered Other Pooled Registered Other Pooled Portfolio Investment Investment Other Investment Investment Other Manager Companies Vehicles Accounts Companies Vehicles Accounts Robert A. DiMella 5 1 0 0 1 0 $ 2,936,378,902 $ 22,996,576 $ 0 $ 0 $ 22,996,576 $ 0 (iv) Potential Material Conflicts of Interest Real, potential or apparent conflicts of interest may arise when a portfolio manager has day-to-day portfolio management responsibilities with respect to more than one fund or account, including the following: Certain investments may be appropriate for the Fund and also for other clients advised by the Investment. Adviser and its affiliates, including other client accounts managed by the Fund's portfolio management team. Investment decisions for the Fund and other clients are made with a view to achieving their respective investment objectives and after consideration of such factors as their current holdings, availability of cash for investment and the size of their investments generally. Frequently, a particular security may be bought or sold for only one client or in different amounts and at different times for more than one but less than all clients. Likewise, because clients of the Investment Adviser and its affiliates may have differing investment strategies, a particular security may be bought for one or more clients when one or more other clients are selling the security. The investment results for the Fund may differ from the results achieved by other clients of the Investment Adviser and its affiliates and results among clients may differ. In addition, purchases or sales of the same security may be made for two or more clients on the same day. In such event, such transactions will be allocated among the clients in a manner believed by the Investment Adviser and its affiliates to be equitable to each. The Investment Adviser will not determine allocations based on whether it receives a performance based fee from the client. In some cases, the allocation procedure could have an adverse effect on the price or amount of the securities purchased or sold by the Fund. Purchase and sale orders for the Fund may be combined with those of other clients of the Investment Adviser and its affiliates in the interest of achieving the most favorable net results to the Fund. To the extent that the Fund's portfolio management team has responsibilities for managing accounts in addition to the Fund, a portfolio manager will need to divide his time and attention among relevant accounts. In some cases, a real, potential or apparent conflict may also arise where (i) the Investment Adviser may have an incentive, such as a performance based fee, in managing one account and not with respect to other accounts it manages or (ii) where a member of the Fund's portfolio management team owns an interest in one fund or account he or she manages and not another. (a)(3) As of April 30, 2006: Portfolio Manager Compensation The Portfolio Manager Compensation Program of MLIM and its affiliates, including the Investment Adviser, is critical to MLIM's ability to attract and retain the most talented asset management professionals. This program ensures that compensation is aligned with maximizing investment returns and it provides a competitive pay opportunity for competitive performance. Compensation Program The elements of total compensation for MLIM and its affiliates portfolio managers are a fixed base salary, annual performance-based cash and stock compensation (cash and stock bonus) and other benefits. MLIM has balanced these components of pay to provide portfolio managers with a powerful incentive to achieve consistently superior investment performance. By design, portfolio manager compensation levels fluctuate--both up and down--with the relative investment performance of the portfolios that they manage. Base Salary Under the MLIM approach, like that of many asset management firms, base salaries represent a relatively small portion of a portfolio manager's total compensation. This approach serves to enhance the motivational value of the performance-based (and therefore variable) compensation elements of the compensation program. Performance-Based Compensation MLIM believes that the best interests of investors are served by recruiting and retaining exceptional asset management talent and managing their compensation within a consistent and disciplined framework that emphasizes pay for performance in the context of an intensely competitive market for talent. To that end, MLIM and its affiliates portfolio manager incentive compensation is based on a formulaic compensation program. MLIM's formulaic portfolio manager compensation program includes: investment performance relative to a subset of general closed-end, leveraged, municipal debt funds over 1-, 3- and 5-year performance periods and a measure of operational efficiency. Portfolio managers are compensated based on the pre-tax performance of the products they manage. If a portfolio manager's tenure is less than 5 years, performance periods will reflect time in position. Portfolio managers are compensated based on products they manage. A discretionary element of portfolio manager compensation may include consideration of: financial results, expense control, profit margins, strategic planning and implementation, quality of client service, market share, corporate reputation, capital allocation, compliance and risk control, leadership, workforce diversity, supervision, technology and innovation. MLIM and its affiliates also consider the extent to which individuals exemplify and foster ML & Co.'s principles of client focus, respect for the individual, teamwork, responsible citizenship and integrity. All factors are considered collectively by MLIM management. Cash Bonus Performance-based compensation is distributed to portfolio managers in a combination of cash and stock. Typically, the cash bonus, when combined with base salary, represents more than 60% of total compensation for portfolio managers. Stock Bonus A portion of the dollar value of the total annual performance-based bonus is paid in restricted shares of ML & Co. stock. Paying a portion of annual bonuses in stock puts compensation earned by a portfolio manager for a given year "at risk" based on the company's ability to sustain and improve its performance over future periods. The ultimate value of stock bonuses is dependent on future ML & Co. stock price performance. As such, the stock bonus aligns each portfolio manager's financial interests with those of the ML & Co. shareholders and encourages a balance between short-term goals and long-term strategic objectives. Management strongly believes that providing a significant portion of competitive performance-based compensation in stock is in the best interests of investors and shareholders. This approach ensures that portfolio managers participate as shareholders in both the "downside risk" and "upside opportunity" of the company's performance. Portfolio managers therefore have a direct incentive to protect ML & Co.'s reputation for integrity. Other Compensation Programs Portfolio managers who meet relative investment performance and financial management objectives during a performance year are eligible to participate in a deferred cash program. Awards under this program are in the form of deferred cash that may be benchmarked to a menu of MLIM mutual funds (including their own fund) during a five-year vesting period. The deferred cash program aligns the interests of participating portfolio managers with the investment results of MLIM products and promotes continuity of successful portfolio management teams. Other Benefits Portfolio managers are also eligible to participate in broad-based plans offered generally to employees of ML & Co. and its affiliates, including broad-based retirement, 401(k), health, and other employee benefit plans. (a)(4) Beneficial Ownership of Securities. As of April 30, 2006, Mr. DiMella does not beneficially own any stock issued by the Fund. Item 9 - Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers - Not Applicable Item 10 - Submission of Matters to a Vote of Security Holders - Not Applicable Item 11 - Controls and Procedures 11(a) - The Registrant's principal executive and principal financial officers have evaluated the Registrant's disclosure controls and procedures, including internal control over financial reporting, within 90 days of this filing. Such principal officers have concluded that as of May 18, 2007, the Registrant's disclosure controls and procedures were effective in design and operation to reasonably ensure that information required to be disclosed by the Registrant in this Form N-CSR/A was recorded, processed, summarized, and reported within the required time periods, and were sufficient to form the basis of the certifications required by Rule 30a-(2) of the Investment Company Act of 1940, as amended. Prior to reaching that conclusion, such principal officers had become aware of matters relating to the Registrant's participation in certain inverse floater structures that necessitated restatement of financial information included in Item 1 of this filing. As a result, management of the Registrant had reevaluated certain disclosure controls and procedures determined not to be effective, as discussed more fully below. Management of the Registrant is responsible for establishing and maintaining effective internal control over financial reporting. In fulfilling this responsibility, estimates and judgments by management are required to assess the expected benefits and related costs of controls. The Registrant's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. Such internal control includes policies and procedures that provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of a registrant's assets that could have a material effect on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. A control deficiency exists when the design or operation of a control does not allow management or employees, in the normal course of performing their assigned functions, to prevent or detect misstatements on a timely basis. A significant deficiency is a control deficiency, or combination of control deficiencies, that adversely affects the Registrant's ability to initiate, authorize, record, process or report financial data reliably in accordance with generally accepted accounting principles such that there is more than a remote likelihood that a misstatement of the Registrant's annual or interim financial statements that is more than inconsequential will not be prevented or detected. A material weakness is a significant deficiency, or combination of significant deficiencies, that results in more than a remote likelihood that a material misstatement of the annual or interim financial statements will not be prevented or detected. Subsequent to the initial filing of the Registrant's Form N-CSR, the Registrant identified the following control deficiency that was determined to be a material weakness, as defined above, in the Registrant's internal control over financial reporting at April 30, 2006. The Registrant's controls related to the review and analysis of relevant terms and conditions of transfers of certain assets pertaining to inverse floater structures were not operating effectively to appropriately determine whether the transfers of assets qualified for sale accounting under the provisions of Statement of Financial Accounting Standards No. 140, "Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities" ("SFAS 140"). As a result, these controls did not detect that certain transfers were not appropriately recorded as borrowings. Accordingly, the Registrant's financial statements as of and for the period ended April 30, 2006, including prior periods where applicable, were restated to appropriately reflect transfers of such securities as secured borrowings and to report the related income and expense. The restatement had no impact on net assets, net asset value per share or total return. Subsequent to April 30, 2006, but prior to the evaluation of the design and operation of the Registrant's disclosure controls and procedures at May 18, 2007, the Registrant's disclosure controls and procedures were modified to enhance the review and analysis of the relevant terms and conditions of transfers of securities in connection with inverse floater structures in light of SFAS 140. 11(b) - There have been no changes in the Registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940, as amended) that occurred during the second half of the Registrant's fiscal year that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting. However, as discussed above, subsequent to April 30, 2006, the Registrant has enhanced controls related to the application of SFAS 140. Item 12 - Exhibits attached hereto 12(a)(1) - Code of Ethics - See Item 2 12(a)(2) - Certifications - Attached hereto 12(a)(3) - Not Applicable 12(b) - Certifications - Attached hereto Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. BlackRock MuniHoldings Fund, Inc. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr., Chief Executive Officer of BlackRock MuniHoldings Fund, Inc. Date: June 7, 2007 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr., Chief Executive Officer of BlackRock MuniHoldings Fund, Inc. Date: June 7, 2007 By: /s/ Donald C. Burke ------------------- Donald C. Burke, Chief Financial Officer of BlackRock MuniHoldings Fund, Inc. Date: June 7, 2007