a_bankthrift.htm

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-CSR
CERTIFIED SHAREHOLDER REPORT OF REGISTERED
MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811- 8568

John Hancock Bank and Thrift Opportunity Fund
(Exact name of registrant as specified in charter)

601 Congress Street, Boston, Massachusetts 02210
(Address of principal executive offices) (Zip code)

Alfred P. Ouellette
Senior Attorney and Assistant Secretary

601 Congress Street

Boston, Massachusetts 02210
(Name and address of agent for service)

Registrant's telephone number, including area code: 617-663-4324

Date of fiscal year end:  October 31   
 
Date of reporting period:  October 31, 2006   


ITEM 1. REPORT TO SHAREHOLDERS.






TABLE OF CONTENTS 

Your fund at a glance 
page 1 

Managers’ report 
page 2 

Fund’s investments 
page 6 

Financial statements 
page 1 1 

Notes to financial 
statements 
page 1 5 

Trustees and Officers 
page 3 0 

For more information 
page 3 6 


CEO corner

To Our Shareholders,

The future has arrived at John Hancock Funds.

We have always been firm believers in the powerful role the Internet can play in providing fund information to our shareholders and prospective investors. Recently, we launched a redesigned, completely overhauled Web site that is more visually pleasing, easier to navigate and, most importantly, provides more fund information and learning tools without overwhelming the user.

Not long after we embarked on this major project, a study was released by the Investment Company Institute, the mutual fund industry’s main trade group, which found that an overwhelming majority of shareholders consider the Internet the “wave of the future” for accessing fund information.

Our new site sports fresher and faster ways to access account information. New innovations allow investors to view funds by risk level, track the performance of the John Hancock funds of their choice or sort funds by Morningstar, Inc.’s star ratings. Investors who own a John Hancock fund through a qualified retirement plan and don’t pay sales charges when making a purchase have the option of sorting by a “Load Waived” Morningstar Rating, thereby creating an apples-to-apples comparison with no-load funds that may also be available in their retirement plan.

The new site also has more educational tools and interactive modules to educate and assist investors with their financial goals, from college savings to retirement planning. A new “I want to…” feature allows investors to check performance, invest more money, update personal information or download prospectuses and forms quickly and easily.

In another of our ongoing efforts to provide our shareholders with top-notch service, we also redesigned our shareholder reports, as you may have noticed with this report. We hope the larger size, more colorful cover and redesigned presentation of the commentary and data tables will draw you in and make them easier to read.

After you’ve read your shareholder report, we encourage you to visit our new Web site — www.jhfunds.com — and take a tour. It’s easy, fast and fun and allows you to be in control of what you see and do. In short, it’s the wave of the future!

Sincerely,


Keith F. Hartstein,
President and Chief Executive Officer

This commentary reflects the CEO’s views as of October 31, 2006. They are subject to change at any time.


Your fund at a glance

The Fund seeks long-term capital appreciation with moderate income as a secondary objective by normally investing at least 80% of its assets in stocks of regional banks and lending companies, including commercial and industrial banks, savings and loan associations and bank holding companies.

Over the last twelve months

Stocks performed well thanks to solid corporate earnings growth, a slowdown in inflation, moderating economic growth and an end to the Fed’s campaign for higher interest rates.

Financial stocks outperformed the broader market because of solid returns by capital-market shares; banks lagged as the inverted yield curve hurt margins and deposit competition heated up.

The Fund’s return was helped by our decision to favor some of the larger, more attractively valued banks with a greater share of revenue coming from market-related activity.



Top 10 holdings       
Bank of America Corp.  3.2%  U.S. Bancorp.  2.9% 

Zions Bancorp.  3.2%                                    Compass Bancshares, Inc.  2.8% 

Wachovia Corp.  3.2%  Marshall & Ilsley Corp.  2.6% 

Wells Fargo & Co.  3.1%  Comerica, Inc.  2.5% 

SunTrust Banks, Inc.  2.9%  M&T Bank Corp.  2.3% 


As a percentage of net assets on October 31, 2006.

1 1


Managers’ report

John Hancock
Bank and Thrift Opportunity Fund

Stocks produced solid returns for the 12 months ended October 31, 2006, when the Standard & Poor’s 500 Stock Index rose 16.34% . Corporate earnings growth remained healthy, while energy prices retreated from record highs and the Federal Reserve ended its long-running campaign for higher interest rates, holding the fed funds rate target steady at 5.25% since June. Economic growth slowed to a more moderate, sustainable pace during the period, reflecting a slowdown in the housing market.

In this environment, financial shares outperformed, as the large-cap Standard & Poor’s 500 Financial Index returned 19.65%, finishing ahead of mid- and small-cap stocks in this sector. Every segment of the index produced a positive return for the period, although the index’s gains were powered by financial groups whose revenues are tied to the market — investment banks, asset managers and custody banks. The big, diversified banks with exposure to capital-markets activity also performed well. However, regional bank returns were limited by the interest rate environment, where rising short-term interest rates have caused the yield curve to invert. This puts pressure on bank margins, because it narrows the difference between what banks pay depositors and collect from loans.

Fund performance

For the year ended October 31, 2006, John Hancock Bank and Thrift Opportunity Fund posted total returns of 12.07% at net asset value

SCORECARD

INVESTMENT    PERIOD’S PERFORMANCE . . . AND WHAT’S BEHIND THE NUMBERS 
North Fork Bancorp.    Acquired at a significant premium 
Bank of America  Better-than-expected earnings made this stock our top contributor 
City National  Double whammy of margin compression and slower mortgage 
    title business 

2



Portfolio Managers, MFC Global Investment Management (U.S.), LLC
James K. Schmidt, CFA, Lisa A. Welch and Susan A. Curry

(NAV) and 16.41% at market value. The difference in the Fund’s NAV performance and its market performance stems from the fact that the market share price is subject to the dynamics of secondary market trading, which could cause it to trade at a discount or premium to the Fund’s NAV share price at any time. These results trailed the 19.65% return of the Fund’s benchmark, the Standard & Poor’s 500 Financial Index, and the 18.48% average return of the open-end specialty/financial funds tracked by Morningstar, Inc. Keep in mind that your NAV return will be different  from the Fund’s performance if you were not invested for the entire period and did not reinvest all Fund distributions.

“The Fund’s underperformance
  of the financial index and
  Morningstar category are a result
  of our focus on regional banks…”

The Fund’s underperformance of the financial index and Morningstar category are a result of our focus on regional banks, which generally underperformed other financial shares for the period. That said, an increase in bank mergers and acquisitions helped performance, as did our decision to move out of some of the small-cap lenders and into larger banks with lower price/earnings ratios and a heavier component of market-related revenues. These adjustments reflect our investment process, which seeks out lenders trading at attractive valuations with good franchises positioned to benefit from the long-running industry-wide trend toward consolidation.

Regional banks lag

Several factors worked against the small-cap regional banks, which carried higher valuations than large-cap names, making them vulnerable to any disappointment on earnings. A key theme in their underperformance was the inverted yield curve, where short-term rates were higher than longer-term

Bank and Thrift Opportunity Fund

3


rates, and an extremely competitive deposit pricing environment that put pressure on net interest margins. This led to earnings estimate cuts for the group for the second half of 2006 and 2007.

In addition, many Midwestern banks — such as Dearborn Bancorp., Independent Bank Corp., Sky Financial Group, Inc., and Taylor Capital Group, Inc., among others — saw slower regional economic growth hurt their lending business. In California, names such as UnionBanCal Corp. and City National Corp. saw their mortgage title business slow along with the housing market. And banks in the Southeast suffered the double whammy of slower growth in their lucrative construction lending business in addition to margin compression. Taken together, these names account for many of the largest detractors from Fund performance during the period.

Consolidation benefits

In that increasingly challenging environment, many small regional players decided to sell. For the 12 months ended October 31, 2006, ten of our portfolio holdings agreed to be acquired, including North Fork Bancorp., Inc., Texas Regional and Mercantile Bankshares Corp. These firms were purchased at significant premiums to their market value, making them meaningful contributors to performance for the period.

Other big contributors came from among the big money center banks, with Bank of America Corp. and JPMorgan Chase & Co. near the top of the list. Bank of America enjoyed solid returns as it reported earnings that exceeded expectations. The acquisition of MBNA — making Bank of America the leading credit card issuer in the U.S. — also worked out better than expected. At JPMorgan, the market liked Chief Executive Jamie Dimon’s ability to improve the firm’s profitability despite slowdowns in its mortgage and credit card businesses.

INDUSTRY DISTRIBUTION1 
Regional banks  63% 
Diversified banks  11% 
Other diversified   
financial services  6% 
Thrifts & mortgage   
finance  5% 
Asset management &   
custody banks  3% 
Consumer finance  1% 

Another leading contributor was Wells Fargo & Co., which continued to perform well despite worries about a slowdown in its mortgage business. Wells Fargo was able to report solid earnings growth because of good performance out of its consumer and business lending units.

Managed distribution update

The Fund continued its managed distribution plan, in effect since January 2004, which requires the Fund to make quarterly

Bank and Thrift Opportunity Fund

4


distributions of at least 2.5% of the preceding calendar year end’s net asset value. During this period, on December 2, 2005, the Fund announced a quarterly distribution of $0.287 per share to shareholders of record as of December 12, 2005, and on March 3, 2006, the Fund announced a quarterly distribution of $0.261 per share to shareholders of record as of March 13, 2006. More recently, the Fund announced a  quarterly distribution of $0.261 per share on June 2, 2006, to shareholders of record as of June 12, 2006, and a similar amount on September 1, 2006, to shareholders of record as of September 11, 2006.

“…an increase in bank mergers
  and acquisitions helped
  performance, as did our decision
  to move out of some of the
  small-cap lenders and into larger
  banks…”

Outlook

In the near term, concerns about earnings are valid in an environment where intense deposit competition and an inverted yield curve have margins under pressure. In addition, this comes at a time when slower economic growth raises questions about credit trends. However, it’s worth pointing out that a more difficult business climate for banks tends to promote consolidation. In addition, the valuation disparity between large and small banks has narrowed, which is another positive for mergers and acquisitions activity in the sector. Because our investment process favors lenders that we believe are positioned to benefit from the long-term industry trend toward consolidation, these factors can support Fund performance in an otherwise challenging environment.

This commentary reflects the views of the portfolio managers through the end of the Fund’s period discussed in this report. The managers’ statements reflect their own opinions. As such, they are in no way guarantees of future events, and are not intended to be used as investment advice or a recommendation regarding any specific security. They are also subject to change at any time as market and other conditions warrant.

Sector investing is subject to greater risks than the market as a whole.

1As a percentage of net assets on October 31, 2006.

Bank and Thrift Opportunity Fund

5


Fund’s investments

F I N A N C I A L  S T A T E M E N T S

Securities owned by the Fund on 10-31-06

This schedule is divided into three main categories: capital preferred securities, common
stocks and short-term investments. Capital preferred securities and common stocks are
further broken down by industry group. Short-term investments, which represent the
Fund’s cash position, are listed last.

  Credit  Par value   
Issuer, description  rating (A)  (000)  Value 

Capital preferred securities 0.09%      $841,610 
(Cost $770,000)       

Regional Banks 0.09%
 
    841,610 

CSBI Capital Trust I, 11.75%,       
Ser A, 06-06-27 (B)(G)  B–  $770  841,610 
 
Issuer    Shares  Value 

Common stocks 98.81%      $881,895,717 
(Cost $408,141,295)       

Asset Management & Custody Banks 3.64%
 
    32,471,420 

Bank of New York Co., Inc. (The) (NY)    305,000  10,482,850 

Mellon Financial Corp. (PA)    330,000  12,804,000 

Northern Trust Corp. (IL)    70,000  4,110,400 

State Street Corp. (MA)    79,000  5,074,170 

Consumer Finance 0.86%
 
    7,649,713 

Capital One Financial Corp. (VA)    96,429  7,649,713 

Diversified Banks 12.45%
 
    111,130,741 

Comerica, Inc. (MI)    384,400  22,368,236 

Toronto-Dominion Bank (The) (Canada)    130,349  7,551,118 

U.S. Bancorp. (MN)    750,541  25,398,307 

Wachovia Corp. (NC) (L)    507,571  28,170,190 

Wells Fargo & Co. (CA)    761,722  27,642,890 

Other Diversified Financial Services 6.99%
 
    62,465,817 

Bank of America Corp. (NC)    534,260  28,780,586 

Citigroup, Inc. (NY)    345,225  17,316,486 

JPMorgan Chase & Co. (NY)    345,041  16,368,745 

Regional Banks 69.78%
 
    622,772,259 

Access National Corp. (VA)    250,000  2,430,000 

Alabama National Bancorp. (AL)    152,000  10,313,200 

AmericanWest Bancorp. (WA)    357,921  7,487,707 

Ameris Bancorp. (GA)    83,837  2,339,891 

AmSouth Bancorp. (AL)    95,879  2,897,463 

Bank of Hawaii Corp. (HI)    59,300  3,093,681 

See notes to financial statements

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6


F I N A N C I A L  S T A T E M E N T S

Issuer  Shares  Value 
Regional Banks (continued)     

BB&T Corp. (NC)  344,846  $15,007,698 

Beverly National Corp. (MA)  97,500  2,291,250 

BOK Financial Corp. (OK)  117,208  6,024,491 

Cadence Financial Corp. (MS)  100,500  2,060,250 

Camden National Corp. (ME)  140,000  6,216,000 

Capital City Bank Group, Inc. (FL) (L)  74,543  2,500,172 

Cascade Bancorp. (OR) (L)  166,472  6,069,569 

Chittenden Corp. (VT)  230,245  6,789,925 

City Holding Co. (WV)  41,600  1,630,720 

City National Corp. (CA)  243,377  16,199,173 

CoBiz, Inc. (CO)  68,650  1,551,490 

Colonial BancGroup, Inc. (The) (AL)  654,700  15,608,048 

Commercial Bankshares, Inc. (FL)  63,702  2,356,974 

Community Banks, Inc. (PA) (L)  110,307  2,963,949 

Compass Bancshares, Inc. (AL)  439,857  24,746,355 

Cullen/Frost Bankers, Inc. (TX)  20,000  1,083,200 

Dearborn Bancorp., Inc. (MI) (I)  75,993  1,601,173 

Desert Community Bank (CA)  275,000  4,840,000 

DNB Financial Corp. (PA)  72,577  1,524,117 

East West Bancorp., Inc. (CA) (L)  440,000  16,064,400 

ECB Bancorp., Inc. (NC)  65,000  2,115,750 

Eurobancshares, Inc. (Puerto Rico) (I)  42,830  405,600 

F.N.B. Corp. (PA) (L)  90,049  1,524,530 

Fifth Third Bancorp. (OH)  145,040  5,779,844 

Financial Institutions, Inc. (NY)  73,000  1,684,110 

First Charter Corp. (NC)  296,700  7,384,863 

First Horizon National Corp. (TN) (L)  152,150  5,982,538 

First Midwest Bancorp., Inc. (IL)  103,800  3,947,514 

First National Lincoln Corp. (ME)  146,499  2,450,928 

First Regional Bancorp. (CA) (I)  450,000  14,337,000 

First State Bancorp. (NM)  130,000  3,238,300 

Fulton Financial Corp. (PA)  359,890  5,761,839 

Glacier Bancorp., Inc. (MT)  370,288  12,930,457 

Harleysville National Corp. (PA)  151,897  3,244,520 

Independent Bank Corp. (MI)  344,935  8,243,946 

International Bancshares Corp. (TX)  200,337  6,146,339 

KeyCorp (OH)  297,000  11,030,580 

M&T Bank Corp. (NY) (L)  166,657  20,300,489 

Marshall & Ilsley Corp. (WI) (L)  475,295  22,785,642 

MB Financial, Inc. (IL) (L)  152,950  5,515,377 

Mercantile Bankshares Corp. (MD)  284,250  12,813,990 

Merrill Merchants Bankshares, Inc. (ME)  78,173  1,994,193 

Mid-State Bancshares (CA)  50,000  1,499,500 

National City Corp. (OH) (L)  407,587  15,182,616 

North Fork Bancorp., Inc. (NY)  621,592  17,765,099 

See notes to financial statements

Bank and Thrift Opportunity Fund

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F I N A N C I A L  S T A T E M E N T S

Issuer  Shares  Value 
Regional Banks (continued)     

Northrim Bancorp., Inc. (AK)  73,555  $1,976,423 

Pacific Capital Bancorp. (CA)  364,354  11,207,529 

Placer Sierra Bancshares (CA)  14,550  345,126 

PNC Financial Services Group, Inc. (PA)  284,800  19,944,544 

Prosperity Bancshares, Inc. (TX)  158,745  5,506,864 

Provident Bankshares Corp. (MD)  175,058  6,326,596 

Regions Financial Corp. (AL)  177,390  6,731,951 

S&T Bancorp., Inc. (PA)  154,700  5,236,595 

Security Bank Corp. (GA)  197,500  4,785,425 

Sky Financial Group, Inc. (OH)  309,850  7,761,743 

Smithtown Bancorp., Inc. (NY) (L)  45,000  1,276,200 

South Financial Group, Inc. (The) (SC) (L)  70,150  1,861,080 

Southcoast Financial Corp. (SC) (I)(L)  44,990  932,193 

Sterling Bancshares, Inc. (TX)  12,950  237,115 

Summit Bancshares, Inc. (TX)  279,000  7,574,850 

Summit Bank Corp. (GA)  135,000  3,181,950 

SunTrust Banks, Inc. (GA)  322,826  25,500,026 

SVB Financial Group (DE) (I)(L)  244,700  11,261,094 

Synovus Financial Corp. (GA)  615,350  18,078,983 

Taylor Capital Group, Inc. (IL)  241,950  8,431,958 

TCF Financial Corp. (MN)  408,166  10,624,561 

TD Banknorth, Inc. (ME) (L)  309,517  9,155,513 

TriCo Bancshares (CA)  53,000  1,378,000 

UCBH Holdings, Inc. (CA)  402,500  6,898,850 

Umpqua Holdings Corp. (OR) (L)  182,901  5,165,124 

UnionBanCal Corp. (DE)  139,000  8,003,620 

Univest Corp. (PA)  205,218  6,222,210 

Valley National Bancorp. (NJ)  100,255  2,612,645 

Vineyard National Bancorp Co. (CA)  278,970  6,092,705 

Virginia Commerce Bancorp., Inc.(VA) (I)(L)  30,000  610,800 

Virginia Financial Group, Inc. (VA)  68,250  1,890,525 

West Coast Bancorp. (OR)  67,583  2,223,481 

Westamerica Bancorp. (CA)  40,000  1,994,000 

Whitney Holding Corp. (LA)  150,750  4,923,495 

Wilmington Trust Corp. (DE)  350,000  14,553,000 

Yardville National Bancorp. (NJ)  97,400  3,882,364 

Zions Bancorp. (UT)  356,053  28,626,661 
Thrifts & Mortgage Finance 5.09%    45,405,767 

Astoria Financial Corp. (NY)  75,865  2,200,844 

BankUnited Financial Corp. (Class A) (FL)  70,300  1,895,991 

Benjamin Franklin Bancorp., Inc. (MA)  15,000  212,700 

Berkshire Hills Bancorp., Inc. (DE)  74,110  2,679,818 

Countrywide Financial Corp. (CA)  186,500  7,109,380 

Hingham Institute for Savings (MA)  80,000  2,841,600 

Hudson City Bancorp., Inc. (NJ)  421,810  5,791,451 

See notes to financial statements

Bank and Thrift Opportunity Fund

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F I N A N C I A L  S T A T E M E N T S

Issuer      Shares  Value 
Thrifts & Mortgage Finance (continued)         

LSB Corp. (MA)      65,000  $1,059,500 

PennFed Financial Services, Inc. (NJ)      313,600  5,757,696 

Sovereign Bancorp., Inc. (PA)      113,400  2,705,724 

Washington Mutual, Inc. (WA)      230,812  9,763,348 

Webster Financial Corp. (CT)      70,110  3,387,715 
 
  Interest  Maturity   Par value   
Issuer, description  rate  date  (000)  Value 

Short-term investments 12.82%        $114,371,159 
(Cost $114,371,159)         

Certificates of Deposit 0.01%
 
      81,044 

Citizens South Bank  3.300%  11-02-06  $2  1,574 

Country Bank for Savings  5.640  08-30-08  2  1,610 

First Bank Richmond  2.960  12-05-07  16  15,628 

First Federal Savings Bank of Louisiana  2.480  12-07-07  3  2,711 

First Niagara Bank  2.960  05-09-07  2  1,594 

First Savings Bank of Perkasie  4.250  05-02-07  4  4,103 

First South  5.150  03-15-07  2  1,540 

Framingham Cooperative Bank  3.750  09-10-07  3  3,163 

Home Bank  2.720  12-04-07  15  15,047 

Hudson River Bank & Trust  1.980  11-21-07  7  7,378 

Hudson Savings Bank  2.500  04-20-07  2  1,670 

Machias Savings Bank  1.930  05-24-07  2  1,609 

Middlesex Savings Bank  5.120  08-17-08  2  1,652 

Midstate Federal Savings and Loan Assn.  4.080  05-27-07  2  1,669 

Milford Bank  3.500  05-27-07  2  1,552 

Milford Federal Savings and Loan Assn.  3.650  08-28-08  2  1,683 

Mt. Washington Bank  3.300  10-31-07  2  1,564 

Mt. McKinley Bank  3.850  12-03-06  1  1,441 

Natick Federal Savings Bank  4.590  08-31-07  2  1,611 

New Haven Savings Bank  2.900  05-31-07  2  1,504 

Newburyport Bank  3.400  10-20-08  2  1,777 

Newtown Savings Bank  3.100  05-30-07  2  1,576 

OBA Federal Savings Bank  4.030  06-15-07  1  1,077 

Plymouth Savings Bank  3.000  04-21-07  2  1,629 

Randolph Savings Bank  4.000  09-13-07  2  1,585 

Salem Five Bank  3.200  12-17-06  2  1,517 

Sunshine State Federal Savings and Loan Assoc.  3.440  05-10-07  2  1,580 

See notes to financial statements

Bank and Thrift Opportunity Fund

9


F I N A N C I A L  S T A T E M E N T S

  Interest  Par value   
Issuer, description, maturity date  rate  (000)  Value 

Joint Repurchase Agreement 0.94%      8,346,000 

Investment in a joint repurchase       
agreement transaction with       
Morgan Stanley — Dated 10-31-06       
due 11-01-06 (secured by U.S.       
Treasury Inflation Indexed Bond       
3.375% due 4-15-32).       
Maturity value: $8,347,222  5.270%  $8,346  8,346,000 
 
    Shares   

Cash Equivalents 11.87%      105,944,115 

AIM Cash Investment Trust (T)  105,944,115    105,944,115 

 
Total investments (Cost $523,282,454) 111.72%      $997,108,486 

 
Other assets and liabilities, net (11.72%)      $(104,624,448) 

 
Total net assets 100.00%      $892,484,038 

(B) This security is fair valued in good faith under procedures established by the Board of Trustees. These securities
amounted to $841,610 or 0.09% of the Fund’s net assets as of October 31, 2006.

(G) Security rated internally by John Hancock Advisers, LLC.

(I) Non-income-producing security.

(L) All or a portion of this security is on loan as of October 31, 2006.

(T) Represents investment of securities lending collateral.

Parenthetical disclosure of a foreign country in the security description represents country of a foreign issuer.

The percentage shown for each investment category is the total value of that category as a percentage of the net assets of the Fund.


See notes to financial statements

Bank and Thrift Opportunity Fund

10


Financial statements

F I N A N C I A L  S T A T E M E N T S

Statement of assets and liabilities 10-31-06

This Statement of Assets and Liabilities is the Fund’s balance sheet. It shows the value
of what the Fund owns, is due and owes. You’ll also find the net asset value for each
common share.

Assets   

Investments at value (cost $523,282,454)   
including $103,653,383 of securities loaned  $997,108,486 
Cash  479 
Receivable for investments sold  902,120 
Dividends and interest receivable  1,460,365 
Other assets  112,790 
Total assets  999,584,240 
Liabilities   

Payable for investments purchased  46,172 
Payable upon return of securities loaned  105,944,115 
Payable to affiliates   
Management fees  755,924 
Other  84,803 
Other payables and accrued expenses  269,188 
Total liabilities  107,100,202 
Net Assets   

Capital paid-in  396,955,009 
Accumulated net realized gain on investments  21,338,530 
Net unrealized appreciation of investments  473,826,032 
Accumulated net investment income  364,467 
Net assets  $892,484,038 
Net asset value per common share   

Based on 84,400,000 shares of beneficial interest outstanding —   
unlimited number of shares authorized with no par value  $10.57 

See notes to financial statements

Bank and Thrift Opportunity Fund

11


F I N A N C I A L  S T A T E M E N T S

Statement of operations For the year ended 10-31-06.

This Statement of Operations summarizes the Fund’s investment income earned
and expenses incurred in operating the Fund. It also shows net gains (losses) for
the period stated.

Investment income   
Dividends (net of foreign withholding taxes of $31,588)  $23,736,743 
Interest  1,098,502 
Securities lending  98,876 
Total investment income  24,934,121 
Expenses   

Investment management fees (Note 2)  10,282,446 
Administration fees (Note 2)  2,235,314 
Transfer agent fees (Note 2)  41,749 
Custodian fees  133,345 
Printing fees  129,323 
Blue sky fees  74,567 
Professional fees  48,925 
Trustees’ fees  46,236 
Compliance fees  19,447 
Securities lending fees  3,836 
Interest  1,285 
Miscellaneous  45,244 
Total expenses  13,061,717 
Less expense reductions (Note 2)  (1,486,183) 
Net expenses  11,575,534 
Net investment income  13,358,587 
Realized and unrealized gain   

Net realized gain on investments  91,532,530 
Change in net unrealized appreciation (depreciation) of investments  (9,737,872) 
Net realized and unrealized gain  81,794,658 
Increase in net assets from operations  $95,153,245 

See notes to financial statements

Bank and Thrift Opportunity Fund

12


F I N A N C I A L  S T A T E M E N T S

Statement of changes in net assets

These Statements of Changes in Net Assets show how the value of the Fund’s net assets
has changed during the last two periods. The difference reflects earnings less expenses,
any investment gains and losses, and distributions, if any, paid to shareholders.

  Year  Year 
  ended  ended 
  10-31-051  10-31-06 

Increase (decrease) in net assets     
From operations     
Net investment income  $12,211,582  $13,358,587 
Net realized gain  76,139,650  91,532,530 
Change in net unrealized appreciation (depreciation)  (48,302,904)  (9,737,872) 
Increase in net assets resulting from operations  40,048,328  95,153,245 
Distributions to shareholders     
From net investment income  (19,937,812)  (14,179,201) 
From net realized gain  (75,518,588)  (76,128,800) 
  (95,456,400)  (90,308,001) 
Net assets     

Beginning of period  943,046,866  887,638,794 
End of period2  $887,638,794  $892,484,038 

1 Audited by previous auditor.

2 Includes accumulated net investment income of $1,185,081 and $364,467, respectively.

See notes to financial statements

Bank and Thrift Opportunity Fund

13


F I N A N C I A L  S T A T E M E N T S

Financial highlights

The Financial highlights show how the Fund’s net asset value for a share has changed since the end of the previous period.

COMMON SHARES           
 
Period ended  10-31-021  10-31-031  10-31-041  10-31-051  10-31-06 

Per share operating performance           
Net asset value, beginning of period  $9.76  $9.54  $10.94  $11.17  $10.52 
Net investment income2  0.11  0.12  0.13  0.14  0.16 
Net realized and unrealized           
gain on investments  0.88  2.14  1.55  0.34  0.96 
Total from investment operations  0.99  2.26  1.68  0.48  1.12 
Less distributions           
From net investment income  (0.13)  (0.12)  (0.12)  (0.24)  (0.17) 
From net realized gain  (1.08)  (0.74)  (1.33)  (0.89)  (0.90) 
  (1.21)  (0.86)  (1.45)  (1.13)  (1.07) 
Net asset value, end of period  $9.54  $10.94  $11.17  $10.52  $10.57 
Per share market value, end of period  $7.92  $9.65  $10.14  $9.39  $9.80 
Total return at market value3,4 (%)  15.39  35.54  21.37  3.68  16.41 
Ratios and supplemental data           

Net assets, end of period           
(in millions)  $805  $923  $943  $888  $892 
Ratio of net expenses to average           
net assets (%)  1.43  1.43  1.39  1.32  1.29 
Ratio of gross expenses to average           
net assets5 (%)  1.46  1.48  1.47  1.47  1.46 
Ratio of net investment income           
to average net assets (%)  1.11  1.28  1.17  1.34  1.49 
Portfolio turnover (%)  20  4  5  5  9 

1 Audited by previous auditor.

2 Based on the average of the shares outstanding.

3 Assumes dividend reinvestment.

4 Total returns would have been lower had certain expenses not been reduced during the periods shown.

5 Does not take into consideration expense reductions during the periods shown.


See notes to financial statements

Bank and Thrift Opportunity Fund

14


Notes to financial statements

Note 1
Accounting policies

John Hancock Bank and Thrift Opportunity Fund (the “Fund”) is a diversified closed-end management investment company, shares of which were initially offered to the public on August 23, 1994, and are publicly traded on the New York Stock Exchange.

Significant accounting policies of the Fund
are as follows:

Valuation of investments

Securities in the Fund’s portfolio are valued on the basis of market quotations, valuations provided by independent pricing services or if quotations are not readily available, or the value has been materially affected by events occurring after the closing of a foreign market, at fair value as determined in good faith in accordance with procedures approved by the Trustees. Short-term debt investments which have a remaining maturity of 60 days or less may be valued at amortized cost, which approximates market value. Investments in AIM Cash Investment Trust are valued at their net asset value each business day. The Fund determines the net asset value of the common shares each business day. All portfolio transactions initially expressed in terms of foreign currencies have been translated into U.S. dollars as described in “Foreign currency translation” below.

Joint repurchase agreement

Pursuant to an exemptive order issued by the Securities and Exchange Commission, the Fund, along with other registered investment companies having a management contract with John Hancock Advisers, LLC (the “Adviser”), a wholly owned subsidiary of John Hancock Financial Services, Inc., a subsidiary of Manulife Financial Corporation (“MFC”), may participate in a joint repurchase agreement transaction. Aggregate cash balances are invested in one or more large repurchase  agreements, whose underlying securities are obligations of the U.S. government and/or its agencies. The Fund’s custodian bank receives delivery of the underlying securities for the joint account on the Fund’s behalf. The Adviser is responsible for ensuring that the agreement is fully collateralized at all times.

Foreign currency translation

All assets or liabilities initially expressed in terms of foreign currencies are translated into U.S. dollars based on London currency exchange quotations as of 4:00 p.m., London time, on the date of any determination of the net asset value of the Fund. Transactions affecting statement of operations accounts and net realized gain (loss) on investments are translated at the rates prevailing at the dates of the transactions.

The Fund does not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in market prices of securities held. Such fluctuations are included with the net realized and unrealized gain or loss from investments.

Reported net realized foreign currency exchange gains or losses arise from sales of foreign currency, currency gains or losses realized between the trade and settlement dates on securities transactions, and the difference between the amounts of dividends, interest and foreign withholding taxes recorded on the Fund’s books and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign currency exchange gains and losses arise from changes in the value of assets and liabilities, other than investments in securities, resulting from changes in the exchange rates.

Investment transactions

Investment transactions are accounted for on a trade date plus one basis for daily net asset value calculations. However, for financial reporting

Bank and Thrift Opportunity Fund

15


purposes, investment transactions are reported on trade date. Net realized gains and losses on sales of investments are determined on the identified cost basis. Capital gains realized on some foreign securities are subject to foreign taxes, which are accrued as applicable.

Expenses

The majority of expenses are directly identifiable to an individual fund. Expenses that are not readily identifiable to a specific fund are allocated in such a manner as deemed equitable, taking into consideration, among other things, the nature and type of expense and the relative size of the funds.

Securities lending

The Fund may lend securities to certain qualified brokers who pay the Fund negotiated lender fees. The loans are collateralized at all times with cash or securities with a market value at least equal to the market value of the securities on loan. As with other extensions of credit, the Fund may bear the risk of delay of the loaned securities in recovery or even loss of rights in the collateral, should the borrower of the securities fail financially. At October 31, 2006, the Fund loaned securities having a market value of $103,653,383 collateralized by cash in the amount of $105,944,115. The cash collateral was invested in a short-term instrument. Securities lending expenses are paid by the Fund to the Adviser.

Federal income taxes

The Fund qualifies as a “regulated investment company” by complying with the applicable provisions of the Internal Revenue Code and will not be subject to federal income tax on taxable income that is distributed to shareholders. Therefore, no federal income tax provision is required.

New accounting pronouncements

In June 2006, Financial Accounting Standards Board (“FASB”) Interpretation No. 48, Accounting for Uncertainty in Income Taxes (the “Interpretation”) was issued and is effective for fiscal years beginning after December 15, 2006 and is to be applied to all open tax years as of the effective date. The Interpretation prescribes a minimum threshold for financial statement recognition of the benefit of a tax position 
taken or expected to be taken in a tax return, and requires certain expanded disclosures. Management is currently evaluating the application of the Interpretation to the Fund and has not at this time quantified the impact, if any, resulting from the adoption of the Interpretation on the Fund’s financial statements.

In September 2006, FASB Standard No. 157, Fair Value Measurements (“FAS 157”) was issued, and is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishing a framework for measuring fair value and expands disclosure about fair value measurements. Management is currently evaluating the application of FAS 157 to the Fund and its impact, if any, resulting from the adoption of FAS 157 on the Fund’s financial statements.

Dividends, interest and distributions

Dividend income on investment securities is recorded on the ex-dividend date or, in the case of some foreign securities, on the date thereafter when the Fund identifies the dividend. Interest income on investment securities is recorded on the accrual basis. Foreign income may be subject to foreign withholding taxes, which are accrued as applicable.

The Fund records distributions to shareholders from net investment income and net realized gains, if any, on the ex-dividend date. During the year ended October 31, 2005, the tax character of distributions paid was as follows: ordinary income $20,979,308 and long-term capital gain $74,477,092. During the year ended October 31, 2006, the tax character of distributions paid was as follows: ordinary income $15,689,117 and long-term capital gain $74,618,884.

As of October 31, 2006, the components of distributable earnings on a tax basis included $3,241,875 of undistributed ordinary income and $18,635,346 of undistributed long-term gain.

Such distributions and distributable earnings, on a tax basis, are determined in conformity with income tax regulations, which may differ from accounting principles generally accepted in the United States of America. Distributions

Bank and Thrift Opportunity Fund

16


in excess of tax basis earnings and profits, if any, are reported in the Fund’s financial statements as a return of capital.

Use of estimates

The preparation of these financial statements, in accordance with accounting principles generally accepted in the United States of America, incorporates estimates made by management in determining the reported amount of assets, liabilities, revenues and expenses of the Fund. Actual results could differ from these estimates.

Note 2
Management fee and transactions with
affiliates and others

The Fund has an investment management contract with the Adviser. Under the investment management contract, the Fund pays a monthly management fee to the Adviser at an annual rate of 1.15% of the Fund’s average weekly net asset value.

The Adviser has agreed to limit the management fee to 1.10% of the Fund’s average weekly net asset value, at least until June 30, 2007. Accordingly, the expense reductions related to management fee limitation amounted to $144,994 for the period from July 1, 2006 to October 31, 2006.

Effective December 31, 2005, the investment management teams of the Adviser were reorganized into Sovereign Asset Management LLC (“Sovereign”), a wholly owned indirect subsidiary of John Hancock Life Insurance Company (“JHLICO”), a subsidiary of MFC. The Adviser remains the principal advisor on the Fund and Sovereign acts as subadviser under the supervision of the Adviser. The restructuring did not have an impact on the Fund, which continues to be managed using the same investment philosophy and process. The Fund is not responsible for payment of the subadvisory fees.

Effective October 1, 2006, Sovereign changed its name to MFC Global Investment Management (U.S.), LLC.

The Fund has an agreement with the Adviser to perform certain administrative services for the Fund. The compensation for the year  was at an annual rate of 0.25% of the average weekly net asset value of the Fund. The Adviser agreed to limit the administration fee to 0.10% of the Fund’s average weekly net asset value. Accordingly, the expense reductions related to the administration fee amounted to $1,341,189 for the year ended October 31, 2006. The Adviser reserves the right to terminate this limitation in the future with Trustees’ approval. The net administrative fee compensation for the year amounted to $894,126. The Fund also paid the Adviser the amount of $140 for certain publishing services, included in the printing fees. The Fund also reimbursed JHLICO for certain compliance costs, included in the Fund’s Statement of Operations.

Mr. James R. Boyle is Chairman of the Adviser, as well as affiliated Trustee of the Fund, and is compensated by the Adviser and/or its affiliates. The compensation of unaffiliated Trustees is borne by the Fund. The unaffiliated Trustees may elect to defer, for tax purposes, their receipt of this compensation under the John Hancock Group of Funds Deferred Compensation Plan. The Fund makes investments into other John Hancock funds, as applicable, to cover its liability for the deferred compensation. Investments to cover the Fund’s deferred compensation liability are recorded on the Fund’s books as an other asset. The deferred compensation liability and the related other asset are always equal and are marked to market on a periodic basis to reflect any income earned by the investments, as well as any unrealized gains or losses. The Deferred Compensation Plan investments had no impact on the operations of the Fund.

The Fund is listed for trading on the New York Stock Exchange (“NYSE”) and has filed with the NYSE its chief executive officer certification regarding compliance with the NYSE’s listing standards. The Fund also files with the Securities and Exchange Commission the cer-tification of its chief executive officer and chief financial officer required by Section 302 of the Sarbanes-Oxley Act.

Bank and Thrift Opportunity Fund

17


Note 3

Fund common share transactions

The Fund had no common share transactions during the years ended October 31, 2005 and October 31, 2006.

Note 4

Investment transactions

Purchases and proceeds from sales or maturities of securities, other than short-term securities and obligations of the U.S. government, during the year ended October 31, 2006, aggregated $80,517,093 and $146,975,656, respectively.

The cost of investments owned on October 31, 2006, including short-term investments, for federal income tax purposes was $523,316,932. Gross unrealized appreciation and depreciation of investments aggregated $477,043,562 and $3,252,008, respectively, resulting in net unrealized appreciation of $473,791,554. The difference between book basis and tax basis net unrealized appreciation of investments is attributable primarily to the tax deferral of losses on certain sales of securities.

Bank and Thrift Opportunity Fund

18


Auditors’ report

Report of Independent Registered Public Accounting Firm

To the Board of Trustees and Shareholders of John Hancock Bank and Thrift Opportunity Fund,

In our opinion, the accompanying statement of assets and liabilities, including the schedule of investments, and the related statements of operations and of changes in net assets and the financial highlights present fairly, in all material respects, the financial position of John Hancock Bank and Thrift Opportunity Fund (the “Fund”) as of October 31, 2006, the results of its operations, the changes in its net assets and the financial highlights for the year the ended, in conformity with accounting principles generally accepted in the United States of America. These financial statements and financial highlights (hereafter referred to as “financial statements”) are the responsibility of the Fund’s management; our responsibility is to express an opinion on these financial statements based on our audit. We conducted our audit of these financial statements 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 are free of material misstatement. An audit 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. We believe that our audit, which included confirmation of securities as of October 31, 2006 by correspondence with the custodian and brokers, provide a reasonable basis for our opinion. The statement of changes in net assets of the Fund for the year ended October 31, 2005, and the financial highlights for each of the periods ended on or before October 31, 2005, were audited by another independent registered public accounting firm, whose report dated December 9, 2005, expressed an unqualified opinion thereon.

PricewaterhouseCoopers LLP
Boston, Massachusetts
December 13, 2006

19


Tax information

Unaudited

For federal income tax purposes, the following information is furnished with respect to the distributions of the Fund, if any, paid during its taxable year ended October 31, 2006.

The Fund has designated distributions to shareholders of $74,618,884 as a long-term capital gain dividend.

With respect to the ordinary dividends paid by the Fund for the fiscal year ended October 31, 2006, 100% of the dividends qualifies for the corporate dividends-received deduction.

The Fund hereby designates the maximum amount allowable of its net taxable income as qualified dividend income as provided in the Jobs and Growth Tax Relief Reconciliation Act of 2003. This amount will be reflected on Form 1099-DIV for the calendar year 2006.

Shareholders will be mailed a 2006 U.S. Treasury Department Form 1099-DIV in January 2007. This will reflect the total of all distributions that are taxable for calendar year 2006.

20


Investment objective and policy

The Fund is a closed-end diversified management investment company, shares of which were initially offered to the public on August 23, 1994, and are publicly traded on the New York Stock Exchange. Its investment objective is long-term capital appreciation.

On November 20, 2001, the Fund’s Trustees approved the following investment policy changes effective December 15, 2001: Under normal circumstances, the Fund will invest at least 80% of its net assets in equity securities of U.S. regional banks and thrifts and holding companies that primarily own or receive a substantial portion of their income from regional banks or thrifts. “Net assets” is defined as net assets plus borrowings for investment purposes. “Primarily owned” means that the bank or financial holding company derives a substantial portion of its business from U.S. regional banks or thrifts as determined by the Adviser, based upon generally accepted measures such as revenues, asset size and number of employees. U.S. regional banks or thrifts are ones that provide full-service banking (i.e. savings accounts, checking accounts, commercial lending and real estate lending) and whose assets are primarily of domestic origin. The Fund will notify shareholders at least 60 days prior to any change in this 80% investment policy.

The Fund may invest in investment-grade debt securities as well as debt securities rated BB or below by Standard & Poor’s Ratings group (“Standard & Poor’s”) or Ba or below by Moody’s Investors Service, Inc. (“Moody’s”), or, if unrated by such rating organizations, determined by the Adviser to be of comparable quality.

Bylaws

On November 19, 2002, the Board of Trustees adopted several amendments to the Fund’s bylaws, including provisions relating to the calling of a special meeting and requiring advance notice of shareholder proposals or nominees for Trustee. The advance notice provisions in the bylaws require shareholders to notify the Fund in writing of any proposal that they intend to present at an annual meeting of shareholders, including any nominations for Trustee, between 90 and 120 days prior to the first anniversary of the mailing date of the notice from the prior year’s annual meeting of shareholders. The notification must be in the form prescribed by the bylaws. The advance notice provisions provide the Fund and its Trustees with the opportunity to thoughtfully consider and address the matters proposed before the Fund prepares and mails its proxy statement to shareholders. Other amendments set forth the procedures that must be followed in order for a shareholder to call a special meeting of shareholders. Please contact the Secretary of the Fund for additional information about the advance notice requirements or the other amendments to the bylaws.

Dividends and distributions

During the year ended October 31, 2006, dividends from net investment income totaling $0.1681 per share and capital gain distributions totaling $0.9021 per share were paid to shareholders. The dates of payments and the amounts per share are as follows:

  INCOME 
PAYMENT DATE  DIVIDEND 

December 30, 2005  $0.0399 
March 31, 2006  0.0404 
June 30, 2006  0.0419 
September 29, 2006  0.0459 
 
  CAPITAL 
  GAIN 
PAYMENT DATE  DISTRIBUTION 

December 30, 2005  $0.2471 
March 31, 2006  0.2206 
June 30, 2006  0.2192 
September 29, 2006  0.2152 

Dividend reinvestment plan

The Fund offers its shareholders a Dividend Reinvestment Plan, (the “Plan”), which offers the opportunity to earn compounded yields. Each holder of common shares will automatically have all distributions of dividends and capital gains reinvested by Mellon Investor Services as Plan agent for the shareholders (the “Plan Agent”), unless an election is made to receive cash. Each registered shareholder will receive from the Plan Agent an authorization card to be signed and

21


returned if the shareholder elects to receive distributions from net investment income in cash or elects not to receive capital gains distributions in the form of a shares dividend. Shareholders may also make their election by notifying the Plan Agent by telephone or by visiting the Plan Agent’s Web site at www.melloninvestor.com. Holders of common shares who elect not to participate in the Plan will receive all distributions in cash paid by check mailed directly to the shareholder of record (or if the common shares are held in street or other nominee name, then to the nominee) by the Plan Agent, as dividend disbursing agent. Shareholders whose shares are held in the name of a broker or nominee or shareholders transferring such an account to a new broker or nominee should contact the broker or nominee, to determine whether and how they may participate in the Plan.

The Plan Agent serves as agent for the holders of common shares in administering the Plan. After the Fund declares a dividend or makes a capital gains distribution, the Plan Agent will, as agent for the participants, receive the cash payment and use it to buy common shares in the open market, on the New York Stock Exchange or elsewhere, for the participants’ accounts. The Fund will not issue any new shares in connection with the Plan. The Plan Agent’s fees for the handling of reinvestment of dividends and other distributions will be paid by the Fund. Each participant will pay a pro rata share of brokerage commissions incurred with respect to the Plan Agent’s open market purchases in connection with the reinvestment of distributions. There are no other charges to participants for reinvesting dividends or capital gain distributions.

Participants in the Plan may withdraw from the Plan at any time by contacting the Plan Agent by telephone, in writing or by visiting the Plan Agent’s Web site at www.melloninvestor.com. Such withdrawal will be effective immediately if received prior to a dividend record date; otherwise, it will be effective for all subsequent dividend record dates. When a participant withdraws from the Plan or upon termination of the Plan, as provided below, either a cash payment will be made to the participant for the full value of the common shares credited to the account upon instruction by the participant, or certificates for whole common shares credited to his or her account under the Plan will be issued and a cash payment will be made for any fraction of a common share credited to such account. The Plan Agent maintains each shareholder’s account in the Plan and furnishes monthly written confirmations of all transactions in the accounts, including information needed by the shareholders for personal and tax records. The Plan Agent will hold common shares in the account of each Plan participant in non-certificated form in the name of the participant. Proxy material relating to shareholders’ meetings of the Fund will include those shares purchased as well as shares held pursuant to the Plan. In the case of shareholders such as banks, brokers or nominees, which hold common shares for others who are the beneficial owners, the Plan Agent will administer the Plan on the basis of the number of common shares certified from time to time by the record shareholders as representing the total amount registered in the record shareholder’s name and held for the account of beneficial owners who are participants in the Plan. Shares may be purchased through broker-dealers.

Dividends and capital gains distributions are taxable whether received in cash or reinvested in additional common shares, and the automatic reinvestment of dividends and capital gain distributions will not relieve participants of any U.S. federal income tax that may be payable or required to be withheld on such dividends or distributions. The amount of dividends to be reported on 1099-DIV should be the amount of cash used by the Plan Agent to purchase shares in the open market, including the amount of cash allocated to brokerage commissions paid on such purchases. Experience under the Plan may indicate that changes are desirable. Accordingly, the Fund reserves the right to amend or terminate the Plan as applied to any distribution paid subsequent to written notice of the change sent to all shareholders of the Fund at least 90 days before the record date for the dividend or distribution. The Plan may be amended or terminated by the Plan Agent by at least 90 days’ written notice to all shareholders of the Fund. All correspondence or additional information concerning the Plan should be directed to

22


the Plan Agent, Mellon Bank, N.A., c/o Mellon
Investor Services, P.O. Box 3338,
South Hackensack, NJ 07606-1938
(Telephone: 1-800-852-0218).

Shareholder communication
and assistance

If you have any questions concerning the Fund, we will be pleased to assist you. If you hold shares in your own name and not with a brokerage firm, please address all notices, correspondence, questions or other communications regarding the Fund to the transfer agent at:

Mellon Investor Services
Newport Office Center VII
480 Washington Boulevard
Jersey City, NJ 07310
Telephone: 1-800-852-0218

If your shares are held with a brokerage firm, you should contact that firm, bank or other nominee for assistance.

Shareholder meeting

On March 22, 2006, the Annual Meeting of the Fund was held to elect four Trustees and to ratify the actions of the Trustees in selecting independent auditors for the Fund.

Proxies covering 81,026,978 shares of beneficial interest were voted at the meeting. The shareholders elected the following Trustees to serve until their respective successors are duly elected and qualified, with the votes tabulated as follows:

    WITHHELD 
  FOR  AUTHORITY 

James R. Boyle  78,335,144  2,691,834 
Ronald R. Dion  78,354,208  2,672,770 
Charles L. Ladner  78,344,941  2,682,037 
John A. Moore  78,382,604  2,644,374 

The shareholders ratified the Trustees’ selection of PricewaterhouseCoopers LLP as the Fund’s independent auditor for the fiscal year ending October 31, 2006, with votes tabulated as follows: 79,732,629 FOR; 833,055 AGAINST and 461,294 ABSTAINING.

23


Board Consideration of and
Continuation ofInvestment Advisory
Agreement and Sub-Advisory
Agreement: John Hancock Bank and
Thrift Opportunity Fund

The Investment Company Act of 1940 (the “1940 Act”) requires the Board of Trustees (the “Board”) of John Hancock Bank and Thrift Opportunity Fund (the “Fund”), including a majority of the Trustees who have no direct or indirect interest in the investment advisory agreement and are not “interested persons” of the Fund, as defined in the 1940 Act (the “Independent Trustees”), annually to review and consider the continuation of: (i) the investment advisory agreement (the “Advisory Agreement”) with John Hancock Advisers, LLC (the “Adviser”) and (ii) the investment sub-advisory agreement (the “Sub-Advisory Agreement”) with MFC Global Investment Management (U.S.), LLC (the “Sub-Adviser”). The Advisory Agreement and the Sub-Advisory Agreement are collectively referred to as the “Advisory Agreements.”

At meetings held on May 1-2 and June 5-6, 2006,1 the Board, considered the factors and reached the conclusions described below relating to the selection of the Adviser and Sub-Adviser and the continuation of the Advisory Agreements. During such meetings, the Board’s Contracts/Operations Committee and the Independent Trustees also met in executive sessions with their independent legal counsel.

In evaluating the Advisory Agreements, the Board, including the Contracts/Operations Committee and the Independent Trustees, reviewed a broad range of information requested for this purpose by the Independent Trustees, including: (i) the investment performance of the Fund relative to a category of relevant funds (the “Category”) and a peer group of comparable funds (the “Peer Group”) each selected by Morningstar Inc. (“Morningstar”), an independent provider of investment company data, for a range of periods ended December 31, 2005; (ii) advisory and other fees incurred by, and the expense ratios of, the Fund relative to a Category and a Peer Group; (iii) the Adviser’s financial results and condition, including its and certain of its affiliates’ profitability from services performed for the Fund; (iv) breakpoints in the Fund’s and the Peer Group’s fees, and information about economies of scale; (v) the Adviser’s and Sub-Adviser’s record of compliance with applicable laws and regulations, with the Fund’s investment policies and restrictions and with the applicable Code of Ethics, and the structure and responsibilities of the Adviser’s and Sub-Adviser’s compliance department; (vi) the background and experience of senior management and investment professionals and (vii) the nature, cost and character of advisory and non-investment management services provided by the Adviser and its affiliates and by the Sub-Adviser.

The Board’s review and conclusions were based on a comprehensive consideration of all information presented to the Board and not the result of any single controlling factor. It was based on performance and other information as of December 31, 2005; facts may have changed between that date and the date of this shareholders report. The key factors considered by the Board and the conclusions reached are described below.

Nature, extent and quality of services

The Board considered the ability of the Adviser and the Sub-Adviser, based on their resources, reputation and other attributes, to attract and retain qualified investment professionals, including research, advisory and supervisory personnel. The Board further considered the compliance programs and compliance records of the Adviser and Sub-Adviser. In addition, the Board took into account the administrative services provided to the Fund by the Adviser and its affiliates.

Based on the above factors, together with those referenced below, the Board concluded that, within the context of its full deliberations, the nature, extent and quality of the investment advisory services provided to the Fund by the Adviser and Sub-Adviser were sufficient to support renewal of the Advisory Agreements.

Fund performance

The Board considered the performance results for the Fund over various time periods ended December 31, 2005. The Board also

24


considered these results in comparison to the performance of the Category, as well as the Fund’s Peer Group and benchmark index. Morningstar determined the Category and Peer Group for the Fund. The Board reviewed with a representative of Morningstar the methodology used by Morningstar to select the funds in the Category and the Peer Group. The Board noted the imperfect comparability of the Peer Group.

The Board noted the Fund’s performance during the 10-year period under review was higher than the performance of the Category and Peer Group medians and its benchmark index — the Dow Jones Financials Sector Index. During the five-year period, the Fund’s performance was lower than the Peer Group median and higher than the Category median, and its benchmark index. The Board also noted that the Fund’s performance for the more recent one- and three-year periods was lower than the median performance of its Category and Peer Group, and its benchmark index. The Adviser discussed planned changes designed to improve the Fund’s performance. The Board indicated its intent to continue to monitor the Fund’s performance trends to assess whether other remedial changes are warranted.

Investment advisory fee and sub-advisory
fee rates and expenses

The Board reviewed and considered the contractual investment advisory fee rate payable by the Fund to the Adviser for investment advisory services (the “Advisory Agreement Rate”). The Board received and considered information comparing the Advisory Agreement Rate with the advisory fees for the Peer Group. The Board noted that the Advisory Agreement Rate was higher than the median rate of the Peer Group and the Category. The Adviser discussed with the Board factors contributing to the higher Advisory Agreement Rate. The Board favorably considered the Adviser’s agreement to implement additional fee waivers, which will lower the Advisory Agreement Rate.

The Board received and considered expense information regarding the Fund’s various components, including advisory fees, and other non-advisory fees, including transfer agent fees, custodian fees, and other miscellaneous fees (e.g., fees for accounting and legal services). The Board considered comparisons of these expenses to the Peer Group median. The Board also received and considered expense information regarding the Fund’s total operating expense ratio (“Gross Expense Ratio”) and total operating expense ratio after taking the fee waiver arrangement applicable to the Advisory Agreement Rate into account (“Net Expense Ratio”). The Board received and considered information comparing the Gross Expense Ratio and Net Expense Ratio of the Fund to that of the Peer Group and Category medians. The Board noted that the Fund’s Gross and Net Expense Ratios were higher than the Peer Group median. The Board also noted that the Fund’s Gross and Net Expense Ratios were either equal to or lower than the Category median. The Board favorably considered the impact of the additional fee waivers towards ultimately lowering the Fund’s total operating expense ratio.

The Adviser also discussed the Morningstar data and rankings, and other relevant information, for the Fund. Based on the above-referenced considerations and other factors, the Board concluded that the Fund’s plans for lowering the Advisory Agreement Rate and improving performance supported the re-approval of the Advisory Agreements.

The Board also received information about the investment sub-advisory fee rate (the “Sub-Advisory Agreement Rate”) payable by the Adviser to the Sub-Adviser for investment sub-advisory services. The Board concluded that the Sub-Advisory Agreement Rate was fair and equitable, based on its consideration of the factors described here.

Profitability

The Board received and considered a detailed profitability analysis of the Adviser based on the Advisory Agreements, as well as on other relationships between the Fund and the Adviser and its affiliates, including the Sub-Adviser. The Board concluded that, in light of the costs of providing investment management and other services to the Fund, the profits and other ancillary benefits reported by the Adviser were not unreasonable.

25


Economies of scale

The Board received and considered general information regarding economies of scale with respect to the management of the Fund, including the Fund’s ability to appropriately benefit from economies of scale under the Fund’s fee structure. The Board recognized the inherent limitations of any analysis of economies of scale, stemming largely from the Board’s understanding that most of the Adviser’s and Sub-Adviser’s costs are not specific to individual Funds, but rather are incurred across a variety of products and services.

The Board observed that the Advisory Agreements did not offer breakpoints. However, the Board considered the limited relevance of economies of scale in the context of a closed-end fund that, unlike an open-end fund, does not continuously offer its shares. The Board noted that the Fund, as a closed-end investment company, was not expected to increase materially in size and that its assets would grow (if at all) through the investment performance of the Fund. Therefore, the Board did not consider potential economies of scale as a principal factor in assessing the fees payable under the Agreements, but concluded that the fees were fair and equitable based on relevant factors.

Other benefits to the Adviser

The Board received information regarding potential “fall-out” or ancillary benefits received by the Adviser and its affiliates as a result of the Adviser’s relationship with the Fund. Such benefits could include, among others, benefits directly attributable to the relationship of the Adviser with the Fund and benefits potentially derived from an increase in the business of the Adviser as a result of its relationship with the Fund (such as the ability to market to shareholders other financial products offered by the Adviser and its affiliates).

The Board also considered the effectiveness of the Adviser’s, Sub-Adviser’s and Fund’s policies and procedures for complying with the requirements of the federal securities laws, including those  relating to best execution of portfolio transactions and brokerage allocation.

Other factors and broader review

As discussed above, the Board reviewed detailed materials received from the Adviser and Sub-Adviser as part of the annual re-approval process. The Board also regularly reviews and assesses the quality of the services that the Fund receives throughout the year. In this regard, the Board reviews reports of the Adviser and Sub-Adviser at least quarterly, which include, among other things, fund performance reports and compliance reports. In addition, the Board meets with portfolio managers and senior investment officers at various times throughout the year.

After considering the above-described factors and based on its deliberations and its evaluation of the information described above, the Board concluded that approval of the continuation of the Advisory Agreements for the Fund was in the best interest of the Fund and its shareholders. Accordingly, the Board unanimously approved the continuation of the Advisory Agreements.

1 The Board previously considered information about the Sub-Advisory Agreement at the September and December 2005 Board meetings in connection with the Adviser’s reorganization.

26


Information about the portfolio managers

Management Biographies and Fund Ownership
Below is a list of the portfolio managers who share joint responsibility for the day-to-day investment
management of the Fund. It provides a brief summary of their business careers over the past five
years and their range of beneficial share ownership in the Fund as of October 31, 2006.

James K. Schmidt, CFA
Executive Vice President, MFC Global Investment Management (U.S.), LLC since 2005
Executive Vice President, John Hancock Advisers, LLC (1994–2005)
Began business career in 1979
Joined fund team in 1994
Fund ownership — None

Lisa A. Welch
Vice President, MFC Global Investment Management (U.S.), LLC since 2005
Vice President, John Hancock Advisers, LLC (2002–2005)
Began business career in 1986
Joined fund team in 1998
Fund ownership — None

Susan A. Curry
Portfolio Manager, MFC Global Investment Management (U.S.), LLC since 2006
Research Officer, Portfolio Officer and Sr. Prod. Mgr., John Hancock Advisers, LLC (1998–2005)
Began business career in 1993
Joined fund team in 2006
Fund ownership — None

Other Accounts the Portfolio Managers are Managing
The table below indicates for each portfolio manager information about the accounts over which the portfolio manager has day-to-day investment responsibility. All information on the number of accounts and total assets in the table is as of October 31, 2006. For purposes of the table, “Other Pooled Investment Vehicles” may include investment partnerships and group trusts, and “Other Accounts” may include separate accounts for institutions or individuals, insurance company general or separate accounts, pension funds and other similar institutional accounts.

P O R T F O L I O    M A N A G E R  O T H E R    A C C O U N T S    M A N A G E D    B Y    T H E    P O R T F O L I O M A N A G E R S 

 
James K. Schmidt, CFA  Other Registered Investment Companies: 
  Six (6) funds with total assets of approximately $4.5 billion. 
  Other Pooled Investment Vehicles: None 
  Other Accounts: None 
 
Lisa A. Welch  Other Registered Investment Companies: 
  Five (5) funds with total assets of approximately $4.4 billion. 
  Other Pooled Investment Vehicles: None 
  Other Accounts: None 
 
Susan Curry  Other Registered Investment Companies: 
  One (1) fund with total assets of approximately $2 billion. 
  Other Pooled Investment Vehicles: None 
  Other Accounts: None 

27


When a portfolio manager is responsible for the management of more than one account, the potential arises for the portfolio manager to favor one account over another. For the reasons outlined below, the Fund does not believe that any material conflicts are likely to arise out of a portfolio manager’s responsibility for the management of the Fund as well as one or more other accounts. The Adviser and the Sub-Adviser have adopted procedures, overseen by the Chief Compliance Officer, that are intended to monitor compliance with the policies referred to in the following paragraphs.

• The Sub-Adviser has policies that require a portfolio manager to allocate investment opportunities in an equitable manner and generally to allocate such investments proportionately among all accounts with similar investment objectives.

• When a portfolio manager intends to trade the same security for more than one account, the policies of the Sub-Adviser generally require that such trades for the individual accounts are aggregated so each account receives the same price. Where not possible or may not result in the best possible price, the Sub-Adviser will place the order in a manner intended to result in as favorable a price as possible for such client.

• The investment performance on specific accounts is not a factor in determining the portfolio manager’s compensation. See “Compensation of Portfolio Managers” below. Neither the Adviser nor the Sub-Adviser receives a performance-based fee with respect to other accounts managed by the Fund’s portfolio managers.

• The Sub-Adviser imposes certain trading restrictions and reporting requirements for accounts in which a portfolio manager or certain family members have a personal interest in order to confirm that such accounts are not favored over other accounts.

• The Sub-Adviser seeks to avoid portfolio manager assignments with potentially conflicting situations. However, where a portfolio manager is responsible for accounts with differing investment objectives and policies, it is possible that the portfolio manager will conclude that it is in the best interest of one account to sell a portfolio security while another account continues to hold or increase the holding in such security.

Compensation of Portfolio Managers

The Sub-Adviser has adopted a system of compensation for portfolio managers and others involved in the investment process that is applied consistently among investment professionals. At the Sub-Adviser, the structure of compensation of investment professionals is currently composed of the following basic components: fixed base salary, and an annual investment bonus plan, as well as customary benefits that are offered generally to all full-time employees of the Sub-Adviser. A limited number of senior portfolio managers, who serve as officers of both the Sub-Adviser and its parent company, may also receive options or restricted stock grants of common shares of Manulife Financial Corporation.

Only investment professionals are eligible to participate in the Investment Bonus Plan on an annual basis. While the amount of any bonus is discretionary, the following factors are generally used in determining bonuses: 1) The investment performance of all accounts managed by the investment professional over one- and three-year periods are considered. The pre-tax performance of each account is measured relative to an appropriate peer group benchmark. 2) The profitability of the Sub-Adviser and its parent company are also considered in determining bonus awards, with greater emphasis placed upon the profitability of the Adviser. 3) The more intangible contributions of an investment professional to the Sub-Adviser’s business, including the investment professional’s support of sales activities, new fund/strategy idea generation, professional growth and development, and management, where applicable, are evaluating in determining the amount of any bonus award.

28


While the profitability of the Sub-Adviser and the investment performance of the accounts that the investment professionals maintain are factors in determining an investment professional’s overall compensation, the investment professional’s compensation is not linked directly to the net asset value of any fund.

29


Trustees and Officers

This chart provides information about the Trustees and Officers who oversee
your John Hancock fund. Officers elected by the Trustees manage the day-to-day
operations of the Fund and execute policies formulated by the Trustees.

Independent Trustees     
 
Name, age    Number of 
Position(s) held with Fund  Trustee  John Hancock 
Principal occupation(s) and other  of Fund  funds overseen 
directorships during past 5 years  since1  by Trustee 
Ronald R. Dion , Born: 1946  1998  53 

Independent Chairman (since 2005); Chairman and Chief Executive Officer,     
R.M. Bradley & Co., Inc.; Director, The New England Council and Massachusetts   
Roundtable; Trustee, North Shore Medical Center; Director, Boston Stock     
Exchange; Director, BJ’s Wholesale Club, Inc. and a corporator of the Eastern     
Bank; Trustee, Emmanuel College; Director, Boston Municipal Research Bureau;   
Member of the Advisory Board, Carroll Graduate School of Management at     
Boston College.     
 
James F. Carlin , Born: 1940  1994  53 

Director and Treasurer, Alpha Analytical Laboratories Inc. (chemical analysis)     
(since 1985); Part Owner and Treasurer, Lawrence Carlin Insurance Agency,     
Inc. (since 1995); Part Owner and Vice President, Mone Lawrence Carlin     
Insurance Agency, Inc. (until 2005); Director and Treasurer, Rizzo Associates     
(engineering) (until 2000); Chairman and CEO, Carlin Consolidated, Inc.     
(management/investments) (since 1987); Director and Partner, Proctor Carlin     
& Co., Inc. (until 1999); Trustee, Massachusetts Health and Education Tax     
Exempt Trust (since 1993); Director of the following: Uno Restaurant Corp.     
(until 2001), Arbella Mutual (insurance) (until 2000), HealthPlan Services, Inc.     
(until 1999), Flagship Healthcare, Inc. (until 1999), Carlin Insurance Agency, Inc.   
(until 1999); Chairman, Massachusetts Board of Higher Education (until 1999).   
 
Richard P. Chapman, Jr.,2 Born: 1935  2005  53 

President and Chief Executive Officer, Brookline Bancorp, Inc. (lending) (since     
1972); Chairman and Director, Lumber Insurance Co. (insurance) (until 2000);     
Chairman and Director, Northeast Retirement Services, Inc. (retirement     
administration) (since 1998); Vice Chairman, Northeastern University Board     
of Trustees (since 2004).     
 
William H. Cunningham , Born: 1944  1995  158 

Former Chancellor, University of Texas System and former President of the     
University of Texas, Austin, Texas; Chairman and CEO, IBT Technologies (until     
2001); Director of the following: Hire.com (until 2004), STC Broadcasting, Inc.     
and Sunrise Television Corp. (until 2001), Symtx, Inc. (electronic manufacturing)   
(since 2001), Adorno/Rogers Technology, Inc. (until 2004), Pinnacle Foods     
Corporation (until 2003), rateGenius (until 2003), Lincoln National Corporation   
(insurance) (since 2006), Jefferson-Pilot Corporation (diversified life insurance     
company) (until 2006), New Century Equity Holdings (formerly Billing Concepts)   

30


Independent Trustees (continued)     
 
Name, age    Number of 
Position(s) held with Fund  Trustee  John Hancock 
Principal occupation(s) and other  of Fund  funds overseen 
directorships during past 5 years  since1  by Trustee 
William H. Cunningham , Born: 1944 (continued)  1995  158 

(until 2001), eCertain (until 2001), ClassMap.com (until 2001), Agile Ventures     
(until 2001), AskRed.com (until 2001), Southwest Airlines, Introgen and     
Viasystems Group, Inc. (electronic manufacturer) (until 2003); Advisory     
Director, Interactive Bridge, Inc. (college fundraising) (until 2001); Advisory     
Director, Q Investments (until 2003); Advisory Director, JPMorgan Chase Bank     
(formerly Texas Commerce Bank – Austin), LIN Television (since 2002), WilTel     
Communications (until 2003) and Hayes Lemmerz International, Inc.     
(diversified automotive parts supply company) (since 2003).     
 
Charles L. Ladner,2 Born: 1938  1994  158 

Chairman and Trustee, Dunwoody Village, Inc. (retirement services) (until 2003);   
Senior Vice President and Chief Financial Officer, UGI Corporation (public utility   
holding company) (retired 1998); Vice President and Director for AmeriGas, Inc.   
(retired 1998); Director of AmeriGas Partners, L.P. (gas distribution) (until 1997);   
Director, EnergyNorth, Inc. (until 1995); Director, Parks and History Association   
(until 2007).     
 
John A. Moore,2 Born: 1939  2002  53 

President and Chief Executive Officer, Institute for Evaluating Health Risks,     
(nonprofit institution) (until 2001); Senior Scientist, Sciences International     
(health research) (until 2003); Former Assistant Administrator and Deputy     
Administrator, Environmental Protection Agency; Principal, Hollyhouse     
(consulting) (since 2000); Director, CIIT Center for Health Science Research     
(nonprofit research) (since 2002).     
 
Patti McGill Peterson,2 Born: 1943  2002  53 

Executive Director, Council for International Exchange of Scholars and Vice     
President, Institute of International Education (since 1998); Senior Fellow, Cornell   
Institute of Public Affairs, Cornell University (until 1998); Former President of     
Wells College and St. Lawrence University; Director, Niagara Mohawk Power     
Corporation (until 2003); Director, Ford Foundation, International Fellowships     
Program (since 2002); Director, Lois Roth Endowment (since 2002); Director,     
Council for International Educational Exchange (since 2003).     
 
Steven R. Pruchansky, Born: 1944  1994  53 

Chairman and Chief Executive Officer, Greenscapes of Southwest Florida, Inc.     
(since 2000); Director and President, Greenscapes of Southwest Florida, Inc.     
(until 2000); Managing Director, JonJames, LLC (real estate) (since 2001);     
Director, First Signature Bank & Trust Company (until 1991); Director, Mast     
Realty Trust (until 1994); President, Maxwell Building Corp. (until 1991).     

31


Non-Independent Trustee3     
 
Name, age    Number of 
Position(s) held with Fund  Trustee  John Hancock 
Principal occupation(s) and other  of Fund  funds overseen 
directorships during past 5 years  since1  by Trustee 

James R. Boyle, Born: 1959  2005  260 
President, John Hancock Annuities; Executive Vice President, John Hancock     
Life Insurance Company (since June, 2004); Chairman and Director, John     
Hancock Advisers, LLC (the “Adviser”), John Hancock Funds, LLC and The     
Berkeley Financial Group, LLC (“The Berkeley Group”) (holding company) (since   
2005); President, U.S. Annuities; Senior Vice President, The Manufacturers     
Life Insurance Company (U.S.A.) (until 2004).     
 
Principal officers who are not Trustees     
 
Name, age     
Position(s) held with Fund    Officer 
Principal occupation(s) and    of Fund 
directorships during past 5 years    since 

Keith F. Hartstein, Born: 1956    2005 
President and Chief Executive Officer     
Senior Vice President, Manulife Financial Corporation (since 2004); Director,     
President and Chief Executive Officer, the Adviser, The Berkeley Group, John     
Hancock Funds, LLC (since 2005); Director, MFC Global Investment Management   
(U.S.), LLC (“MFC Global (U.S.)”) (since 2005); Director, John Hancock Signature   
Services, Inc. (since 2005); President and Chief Executive Officer, John Hancock   
Investment Management Services, LLC (since 2006); President and Chief Executive   
Officer, John Hancock Funds II, John Hancock Funds III and John Hancock Trust;   
Director, Chairman and President, NM Capital Management, Inc. (since 2005);     
Chairman, Investment Company Institute Sales Force Marketing Committee     
(since 2003); Director, President and Chief Executive Officer, MFC Global (U.S.)   
(2005–2006); Executive Vice President, John Hancock Funds, LLC (until 2005).     

 
Thomas M. Kinzler, Born: 1955    2006 
Secretary and Chief Legal Officer     
Vice President and Counsel, John Hancock Life Insurance Company (U.S.A.)     
(since 2006); Secretary and Chief Legal Officer, John Hancock Funds, John     
Hancock Funds II, John Hancock Funds III and John Hancock Trust (since 2006);   
Vice President and Associate General Counsel, Massachusetts Mutual Life     
Insurance Company (1999–2006); Secretary and Chief Legal Counsel, MML     
Series Investment Fund (2000–2006); Secretary and Chief Legal Counsel,     
MassMutual Institutional Funds (2000–2004); Secretary and Chief Legal Counsel,   
MassMutual Select Funds and MassMutual Premier Funds (2004–2006).     

 
Francis V. Knox, Jr., Born: 1947    2005 
Chief Compliance Officer     
Vice President and Chief Compliance Officer, John Hancock Investment     
Management Services, LLC, the Adviser and MFC Global (U.S.) (since 2005);     
Vice President and Chief Compliance Officer, John Hancock Funds II, John     
Hancock Funds III and John Hancock Trust (since 2005); Vice President and     
Assistant Treasurer, Fidelity Group of Funds (until 2004); Vice President and     
Ethics & Compliance Officer, Fidelity Investments (until 2001).     

32


Principal officers who are not Trustees (continued)   
 
Name, age   
Position(s) held with Fund  Officer 
Principal occupation(s) and  of Fund 
directorships during past 5 years  since 

Gordon M. Shone, Born: 1956  2006 
Treasurer   
Treasurer, John Hancock Funds (since 2006), John Hancock Funds II, John   
Hancock Funds III and John Hancock Trust (since 2005); Vice President and   
Chief Financial Officer, John Hancock Trust (2003–2005); Senior Vice President,   
John Hancock Life Insurance Company (U.S.A.) (since 2001); Vice President,   
John Hancock Investment Management Services, Inc., John Hancock Advisers,   
LLC (since 2006) and The Manufacturers Life Insurance Company (U.S.A.)   
(1998–2000).   

 
John G. Vrysen, Born: 1955  2005 
Chief Financial Officer   
Director, Executive Vice President and Chief Financial Officer, the Adviser, The   
Berkeley Group and John Hancock Funds, LLC (since 2005); Executive Vice   
President and Chief Financial Officer, John Hancock Investment Management   
Services, LLC (since 2005); Vice President and Chief Financial Officer, MFC Global   
(U.S.) (since 2005); Director, John Hancock Signature Services, Inc. (since 2005);   
Chief Financial Officer, John Hancock Funds II, John Hancock Funds III and John   
Hancock Trust (since 2005); Vice President and General Manager, Fixed Annuities,   
U.S. Wealth Management (until 2005); Vice President, Operations, Manulife   
Wood Logan (2000–2004).   

The business address for all Trustees and Officers is 601 Congress Street, Boston, Massachusetts 02210-2805.

The Statement of Additional Information of the Fund includes additional information about members of the Board of Trustees of the Fund and is available, without charge, upon request, by calling 1-800-225-5291.

1Each Trustee serves until resignation, retirement age or until his or her successor is elected.

2Member of Audit Committee.

3Non-Independent Trustee holds positions with the Fund’s investment adviser, underwriter and certain other affiliates.

33




For more information

The Fund’s proxy voting policies, procedures and records are available without charge, upon request:

By phone  On the Fund’s Web site  On the SEC’s Web site 
1-800-225-5291  www.jhfunds.com/proxy  www.sec.gov 

 
Investment adviser  Transfer agent and  Independent registered 
John Hancock Advisers, LLC  dividend disburser  public accounting firm 
601 Congress Street  Mellon Investor Services  PricewaterhouseCoopers LLP 
Boston, MA 02210-2805  Newport Office Center VII  125 High Street 
  480 Washington Boulevard  Boston, MA 02110 
Subadviser  Jersey City, NJ 07310   
MFC Global Investment    Stock symbol 
Management (U.S.), LLC  Legal counsel  Listed New York Stock 
101 Huntington Avenue  Kirkpatrick & Lockhart  Exchange: 
Boston, MA 02199  Nicholson Graham LLP  BTO 
  1 Lincoln Street   
Custodian  Boston, MA 02111-2950  For shareholder assistance 
The Bank of New York   
One Wall Street    refer to page 23 
New York, NY 10286     

How to contact us   

 
Internet  www.jhfunds.com   

 
Mail  Regular mail:   
  Mellon Investor Services   
  Newport Office Center VII   
  480 Washington Boulevard   
  Jersey City, NJ 07310   

 
Phone  Customer service representatives  1-800-852-0218 
  Portfolio commentary  1-800-344-7054 
  24-hour automated information  1-800-843-0090 
  TDD line  1-800-231-5469 

A listing of month-end portfolio holdings is available on our Web site, www.jhfunds.com. A more detailed portfolio holdings summary is available on a quarterly basis 60 days after the fiscal quarter on our Web site or upon request by calling 1-800-225-5291, or on the Securities and Exchange Commission’s Web site, www.sec.gov.

36


J O H N   H A N C O C K   F A M I L Y   O F  F U N D S

Equity  Internation 
Balanced Fund  Greater China Opportunities Fund 
Classic Value Fund  International Classic Value Fund 
Classic Value Fund II  International Core Fund 
Core Equity Fund  International Fund 
Focused Equity Fund  International Growth Fund 
Growth Fund   
Growth Opportunities Fund  Income 
Growth Trends Fund  Bond Fund 
Intrinsic Value Fund  Government Income Fund 
Large Cap Equity Fund  High Yield Fund 
Large Cap Select Fund  Investment Grade Bond Fund 
Mid Cap Equity Fund  Strategic Income Fund 
Mid Cap Growth Fund   
Multi Cap Growth Fund  Tax-Free Income 
Small Cap Equity Fund  California Tax-Free Income Fund 
Small Cap Fund  High Yield Municipal Bond Fund 
Small Cap Intrinsic Value Fund  Massachusetts Tax-Free Income Fund 
Sovereign Investors Fund  New York Tax-Free Income Fund 
U.S. Core Fund  Tax-Free Bond Fund 
U.S. Global Leaders Growth Fund   
Value Opportunities Fund  Money Market 
  Money Market Fund 
Asset Allocation & Lifestyle  U.S. Government Cash Reserve 
Allocation Core Portfolio   
Allocation Growth + Value Portfolio  Closed-End 
Lifestyle Aggressive Portfolio  Bank & Thrift Opportunity 
Lifestyle Balanced Portfolio  Financial Trends 
Lifestyle Conservative Portfolio  Income Securities 
Lifestyle Growth Portfolio  Investors Trust 
Lifestyle Moderate Portfolio  Patriot Global Dividend 
  Patriot Preferred Dividend 
Sector  Patriot Premium Dividend I 
Financial Industries Fund  Patriot Premium Dividend II 
Health Sciences Fund  Patriot Select Dividend 
Real Estate Fund  Preferred Income 
Regional Bank Fund  Preferred Income II 
Technology Fund  Preferred Income III 
Technology Leaders Fund  Tax-Advantaged Dividend 

For more complete information on any John Hancock Fund and an Open-End fund prospectus, which includes charges and expenses, call your financial professional, or John Hancock Funds at 1-800-225-5291 for Open-End fund information and 1-800-852-0218 for Closed-End fund information. Please read the Open-End fund prospectus carefully before investing or sending money.



1-800-852-0218
1-800-843-0090 EASI-Line
1-800-231-5469 (TDD)

www.jhfunds. com

PRESORTED
STANDARD
U.S. POSTAGE
PAID
MIS

P900A 10/06
12/06


ITEM 2. CODE OF ETHICS.

As of the end of the period, October 31, 2006, the registrant has adopted a code of ethics, as defined in Item 2 of Form N-CSR, that applies to its Chief Executive Officer, Chief Financial Officer and Treasurer (respectively, the principal executive officer, the principal financial officer and the principal accounting officer, the “Senior Financial Officers”). A copy of the code of ethics is filed as an exhibit to this Form N-CSR.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

Charles L. Ladner is the audit committee financial expert and is “independent”, pursuant to general instructions on Form N-CSR Item 3.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

(a) Audit Fees

The aggregate fees billed for professional services rendered by the principal accountant(s) for the audit of the registrant’s annual financial statements or services that are normally provided by the accountant(s) in connection with statutory and regulatory filings or engagements amounted to $38,000 for the fiscal year ended October 31, 2005 and $26,050 for the fiscal year ended October 31, 2006. These fees were billed to the registrant and were approved by the registrant’s audit committee.

(b) Audit-Related Services

There were no audit-related fees during the fiscal year ended October 31, 2005 and fiscal year ended October 31, 2006 billed to the registrant or to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant ("control affiliates").

(c) Tax Fees

The aggregate fees billed for professional services rendered by the principal accountant(s) for the tax compliance, tax advice and tax planning (“tax fees”) amounted to $2,400 for the fiscal year ended October 31, 2005 and $3,700 for the fiscal year ended October 31, 2006. The nature of the services comprising the tax fees was the review of the registrant’s income tax returns and tax distribution requirements. These fees were billed to the registrant and were approved by the registrant’s audit committee. There were no tax fees billed to the control affiliates.

(d) All Other Fees

There were no other fees during the fiscal year ended October 31, 2005 and other fees amounted to $3,000 for the fiscal year ended October 31, 2006 billed to the registrant or to the control affiliates.

(e)(1) See attachment "Approval of Audit, Audit-related, Tax and Other Services", with the audit committee pre-approval policies and procedures.

(e)(2) There were no fees that were approved by the audit committee pursuant to the de minimis exception for the fiscal years ended October 31, 2005 and October 31, 2006 on behalf of the registrant or on behalf of the control affiliates that relate directly to the operations and financial reporting of the registrant.

(f) According to the registrant’s principal accountant, for the fiscal year ended October 31, 2006, the percentage of hours spent on the audit of the registrant's financial statements for the most


recent fiscal year that were attributed to work performed by persons who were not full-time, permanent employees of principal accountant was less than 50%.

(g) The aggregate non-audit fees billed by the registrant's accountant(s) for services rendered to the registrant and rendered to the registrant's control affiliates for each of the last two fiscal years of the registrant were $69,600 for the fiscal year ended October 31, 2005, and $520,432 for the fiscal year ended October 31, 2006.

(h) The audit committee of the registrant has considered the non-audit services provided by the registrant’s principal accountant(s) to the control affiliates and has determined that the services that were not pre-approved are compatible with maintaining the principal accountant(s)' independence.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

The registrant has a separately-designated standing audit committee comprised of independent trustees. The members of the audit committee are as follows:

Charles L. Ladner - Chairman
Richard P. Chapman, Jr.
Dr. John A. Moore
Patti McGill Peterson

ITEM 6. SCHEDULE OF INVESTMENTS.

Not applicable.

ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-
END MANAGEMENT INVESTMENT COMPANIES.

See attached Exhibit “Proxy Voting Policies and Procedures”.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT
COMPANIES.

Not applicable.

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.

(a) The registrant has adopted procedures by which shareholders may recommend nominees to the registrant's Board of Trustees. A copy of the procedures is filed as an exhibit to this Form N-CSR. See attached "John Hancock Funds - Governance Committee Charter".

ITEM 11. CONTROLS AND PROCEDURES.

(a) Based upon their evaluation of the registrant's disclosure controls and procedures as conducted within 90 days of the filing date of this Form N-CSR, the registrant's principal executive officer and principal financial officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms.


(b) There were no changes in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal half-year (the registrant's second fiscal half-year in the case of an annual report) that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

ITEM 12. EXHIBITS.

(a)(1) Code of Ethics for Senior Financial Officers is attached.

(a)(2) Separate certifications for the registrant's principal executive officer and principal financial officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002 and Rule 30a-2(a) under the Investment Company Act of 1940, are attached.

(b)(1) Separate certifications for the registrant's principal executive officer and principal financial officer, as required by 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, and Rule 30a-2(b) under the Investment Company Act of 1940, are attached. The certifications furnished pursuant to this paragraph are not deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section. Such certifications are not deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that the Registrant specifically incorporates them by reference.

(c)(1) Proxy Voting Policies and Procedures are attached.

(c)(2) Submission of Matters to a Vote of Security Holders is attached. See attached "John Hancock Funds - Governance Committee Charter".

(c)(3) Approval of Audit, Audit-related, Tax and Other Services is attached.

(c)(4) Contact person at the registrant.


SIGNATURES

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.

John Hancock Bank and Thrift Opportunity Fund

By: /s/ Keith F. Hartstein
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Keith F. Hartstein
President and Chief Executive Officer

Date: January 2, 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/ Keith F. Hartstein
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Keith F. Hartstein
President and Chief Executive Officer

Date: January 2, 2007

By: /s/ John G. Vrysen
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John G. Vrysen
Chief Financial Officer

Date: January 2, 2007