FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND

Dear Shareholder:
     The Flaherty & Crumrine  Preferred Income  Opportunity Fund ("PFO") got off
to a very good start in fiscal 2004. The total return on net asset value ("NAV")
for fiscal  first  quarter  ending  February  29th was +5.4% 1. For the trailing
twelve month period, the total return was +22.2% 1.
     Once  again,  strength  in the  preferred  securities  market was the major
factor in the Fund's  performance.  With interest  rates  hovering near all-time
lows,  individual  investors have increasingly turned to preferred securities as
they try to increase  the income from their  portfolios.  At the same time,  the
size of the market has remained fairly stable. There has been a steady stream of
new issues  brought to market,  but older issues are being redeemed at about the
same pace. As expected, issuers are replacing older high coupon preferred issues
with similar but less expensive ones.
     These refinancing transactions are very important to the Fund--if the trend
persists for a long period of time, there may be downward pressure on the income
generated by the portfolio.  On the other hand, low interest rates keep the cost
of the Fund's  leverage  extremely  low. So far these two effects  have  roughly
offset each other.
     The Fund's  hedging  strategy also  performed as expected.  To refresh your
memory,  PFO normally  hedges by  purchasing  put options on U.S.  Treasury bond
futures.  As  interest  rates go up or down,  the  prices of these  put  options
typically move in the opposite direction of the preferred securities.  There is,
however, an important and valuable feature to a put option hedge--in a period of
falling  interest  rates  (as in  recent  months),  the  value of the  preferred
portfolio usually goes up by more than the drop in the value of the put options.
Although  the value of the hedge  positions  declined  during the  period,  when
compared to  appreciation  in the preferred  positions  this loss was small.  Of
course,  if we knew interest rates were going to fall, the best hedge would have
been no hedge at all,  but our  crystal  ball is a bit too cloudy  for that!  We
prefer to hedge consistently, knowing that the portfolio should participate in a
rally but be protected if interest rates rise significantly.
     The Fund's  combination  of preferred  securities  and the put option hedge
creates  an  unusual  investment  product  and we  have  yet to  find a  perfect
benchmark  for  comparison.   When  measured  against   LONG-TERM  fixed  income
investments,  we expect the returns on NAV to lag (but generally only a little!)
during periods of falling  interest rates (because the hedge will hurt returns),
and to perform much better if rates rise  substantially.  In most  interest rate
scenarios,  the Fund's returns on NAV should out-perform SHORT-TERM investments,
although  the Fund's  returns on NAV may lag  briefly  during  periods of rising
short-term  rates.  In any  event,  investors  should  always  bear in mind that
changes in the Fund's  premium or discount to NAV can  significantly  affect the
performance and volatility of the Fund's common share price.
     To provide some comparison of the Fund's  performance,  the total return on
the Lehman Brothers index of long-term  investment grade corporate bonds (a good
proxy for  long-term  fixed-income  investments)  was +4.9%  during  the  fiscal
quarter and +10.8%  during the twelve months ending  February  29th.  The Lehman
Brothers index of 3 - 6 month U.S.  Treasury  Bills (a short-term  proxy) earned
0.3% during the quarter and 1.2% for the year.  Keep in mind that these  indices
do not utilize leverage.
     Economic  conditions  in the  United  States  continue  to  show  signs  of
improvement. This rising economic tide has benefited corporate profitability and
enabled  companies to improve the quality of their balance  sheets.  At the same
time,  sluggish job formation and subdued  inflation  have persuaded the Federal
Reserve to keep monetary policy  accommodative,  which has held down the cost of
the Fund's leverage.
     In the coming weeks, the Fund's adviser, Flaherty & Crumrine, will launch a
new  web  site,  www.preferredstockguide.com.   The  site  will  contain  useful
information  about  most of the  issues  that make up the  preferred  securities
universe.  We've tried to make the site informative and easy to use. We hope you
will also continue to visit the Fund's web site at WWW.PREFERREDINCOME.COM.

     Sincerely,

     /S/DONALD F. CRUMRINE                      /S/ROBERT M. ETTINGER

     Donald F. Crumrine                         Robert M. Ettinger
     Chairman of the Board                      President
     April 12, 2004

     (1) Based on monthly data provided by Lipper Inc. Distributions are assumed
         to be reinvested at NAV in accordance with Lipper's practice.

--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund
SUMMARY OF INVESTMENTS
FEBRUARY 29, 2004 (UNAUDITED)
-----------------------------


                                                                                                          PERCENT
                                                                                            VALUE         OF TOTAL
                                                                                           (000'S)       NET ASSETS
                                                                                          --------       ----------
                                                                                                        
ADJUSTABLE RATE PREFERRED SECURITIES
     Utilities .................................................................          $    628            0.3%
     Banking ...................................................................            18,750            8.5
                                                                                          --------         ------
         TOTAL ADJUSTABLE RATE .................................................            19,378            8.8
                                                                                          --------         ------

FIXED RATE PREFERRED SECURITIES
     Utilities .................................................................            88,863           40.5
     Banking ...................................................................            31,183           14.2
     Financial Services ........................................................            28,314           12.9
     Insurance .................................................................            19,864            9.0
     Oil and Gas ...............................................................             9,315            4.2
     Miscellaneous Industries ..................................................             5,041            2.3
                                                                                          --------         ------
         TOTAL FIXED RATE ......................................................           182,580           83.1
                                                                                          --------         ------

INVERSE FLOATING RATE PREFERRED SECURITIES .....................................             2,133            1.0

TOTAL PREFERRED STOCKS AND SECURITIES ..........................................           204,091           92.9
CORPORATE DEBT SECURITIES ......................................................             3,702            1.7
COMMON STOCKS AND CONVERTIBLE SECURITIES .......................................             8,232            3.7
PURCHASED PUT OPTIONS ..........................................................               697            0.3
MONEY MARKET FUNDS .............................................................             1,471            0.7
                                                                                          --------         ------
TOTAL INVESTMENTS ..............................................................           218,193           99.3
OTHER ASSETS AND LIABILITIES (NET) .............................................             1,448            0.7
                                                                                          --------         ------
     TOTAL NET ASSETS AVAILABLE TO COMMON AND PREFERRED STOCK ..................          $219,641          100.0%
                                                                                          ========         ======




FINANCIAL DATA
PER SHARE OF COMMON STOCK (UNAUDITED)
--------------------------------------------------------
                                                                                                        DIVIDEND
                                                        DIVIDEND        NET ASSET        NYSE         REINVESTMENT
                                                          PAID            VALUE      CLOSING PRICE      PRICE (1)
                                                        --------        ---------    -------------    ------------
                                                                                               
December 31, 2003 - Extra ...........................   $0.0300          $12.63         $14.36           $13.64
December 31, 2003 ...................................    0.0755           12.63          14.36            13.64
January 31, 2004 ....................................    0.0755           12.89          14.80            14.06
February 29, 2004 ...................................    0.0755           13.01          14.57            13.84

--------------------
(1) Whenever  the net asset value per share of the Fund's  common stock is less than or equal to the market price per 
    share on the payment date, new shares issued  will be valued at the higher of net asset  value or 95% of the then
    current market price. Otherwise, the reinvestment shares of common stock will be purchased in the open market.


                                        2

--------------------------------------------------------------------------------
                 STATEMENT OF CHANGES IN NET ASSETS AVAILABLE TO COMMON STOCK(1)
                                THREE MONTHS ENDED FEBRUARY 29, 2004 (UNAUDITED)

                 ---------------------------------------------------------------


                                                                                                            VALUE
                                                                                                           (000'S)
                                                                                                            --------
                                                                                                             
OPERATIONS:
     Net investment income .........................................................................   $       2,865
     Net realized gain on investments sold during the period .......................................             926
     Net unrealized appreciation of investments during the period ..................................           4,210
     Distributions to Money Market Cumulative PreferredTM Stock Shareholders from net investment
         income, including changes in accumulated undeclared distributions .........................            (227)
                                                                                                       -------------
         Net increase in net assets from operations ................................................           7,774

DISTRIBUTIONS:
     Dividends paid from net investment income to Common Stock Shareholders (2) ....................          (2,945)
     Distributions paid from net realized capital gains to Common Stock Shareholders ...............               0
                                                                                                       -------------
         Total Distributions .......................................................................          (2,945)
                                                                                                       -------------
FUND SHARE TRANSACTIONS:
         Increase from Common Stock Transactions ...................................................             449
                                                                                                       -------------
NET INCREASE IN NET ASSETS AVAILABLE TO COMMON STOCK FOR THE PERIOD ................................           5,278
NET ASSETS AVAILABLE TO COMMON STOCK:
     Beginning of period ...........................................................................         144,303
                                                                                                       -------------
     End of period .................................................................................   $     149,581
                                                                                                       =============

                                                                                             FINANCIAL HIGHLIGHTS(1)
                                                                    THREE MONTHS ENDED FEBRURAY 29, 2004 (UNAUDITED) 
                                                               FOR A COMMON SHARE OUTSTANDING THROUGHOUT THE PERIOD.
                                                               -----------------------------------------------------

PER SHARE OPERATING PERFORMANCE:
     Net asset value, beginning of period ..........................................................   $       12.59
                                                                                                       -------------
INVESTMENT OPERATIONS:
     Net investment income .........................................................................            0.25
     Net realized gain and unrealized appreciation on investments ..................................            0.45
DISTRIBUTIONS TO MMP(R)* SHAREHOLDERS:
     From net investment income (including change in accumulated undeclared dividends on MMP(R)*) ..           (0.02)
     From net realized capital gains ...............................................................            0.00
                                                                                                       -------------
     Total from investment operations ..............................................................            0.68
                                                                                                       -------------
DISTRIBUTIONS TO COMMON STOCK SHAREHOLDERS:
     From net investment income ....................................................................           (0.26)
     From net realized capital gains ...............................................................            0.00
                                                                                                       -------------
     Total distributions to Common Stock Shareholders ..............................................           (0.26)
                                                                                                       -------------
     Net asset value, end of period ................................................................   $       13.01
                                                                                                       =============
     Market value, end of period ...................................................................   $       14.57
                                                                                                       =============
     Common shares outstanding, end of period ......................................................      11,494,245
                                                                                                       =============
RATIOS TO AVERAGE NET ASSETS AVAILABLE TO COMMON STOCK SHAREHOLDERS:

     Net investment income + .......................................................................            7.76%**
     Operating expenses ............................................................................            1.53%**

--------------------------------------------------------
SUPPLEMENTAL DATA:++

     Portfolio turnover rate fiscal year to date ...................................................               9%***
     Total net assets available to Common and Preferred Stock, end of period (in 000's) ............   $     219,641
     Ratio of operating expenses to total average net assets including MMP(R)* .....................            1.04%**

(1) These tables  summarize the three months ended  February 29, 2004 and should be read in conjunction with the Fund's 
    audited financial  statements,  including footnotes,  contained in its Annual Report dated November 30, 2003. 
(2) Includes income earned, but not paid out, in prior fiscal year.
*   Money Market Cumulative PreferredTM Stock.
**  Annualized.
*** Not Annualized.
+   The net investment income ratios reflect income net of operating  expenses and payments  to  MMP(R)*  Shareholders.  
++  Information  presented  under  heading Supplemental Data includes MMP(R)*.




                                       3



DIRECTORS
   Martin Brody
   Donald F. Crumrine, CFA
   Robert M. Ettinger, CFA
   David Gale
   Morgan Gust
   Robert F. Wulf, CFA

OFFICERS
   Donald F. Crumrine, CFA
     Chairman of the Board
     and Chief Executive Officer
   Robert M. Ettinger, CFA
     President
   Peter C. Stimes, CFA
     Chief Financial and Accounting
     Officer, Vice President
     and Treasurer
   R. Eric Chadwick, CFA
     Vice President and Secretary
   Bradford S. Stone
     Vice President

INVESTMENT ADVISER
   Flaherty & Crumrine Incorporated
   e-mail: flaherty@fin-mail.com

QUESTIONS CONCERNING YOUR SHARES OF FLAHERTY & 
 CRUMRINE PREFERRED INCOME OPPORTUNITY FUND?
   o If your shares are held in a brokerage
     Account, contact your broker.
   o If you have physical possession of your shares in certificate form, contact
     the Fund's Transfer Agent & Shareholder Servicing Agent --

               PFPC Inc.
               P.O. Box 43027
               Providence, RI 02940-3027
               1-800-331-1710

THIS  REPORT IS SENT TO  SHAREHOLDERS  OF FLAHERTY & CRUMRINE  PREFERRED  INCOME
OPPORTUNITY  FUND  INCORPORATED FOR THEIR  INFORMATION.  IT IS NOT A PROSPECTUS,
CIRCULAR OR REPRESENTATION INTENDED FOR USE IN THE PURCHASE OR SALE OF SHARES OF
THE FUND OR OF ANY SECURITIES MENTIONED IN THIS REPORT.

[GRAPHIC OMITTED]
LIGHTHOUSE

Flaherty & Crumrine
===================
Preferred Income
Opportunity fund

                                    Quarterly

                                     Report

                                February 29, 2004

                        web site: www.preferredincome.com