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: 811-00041
                 ---------------------------------------------

                    GENERAL AMERICAN INVESTORS COMPANY, INC.

--------------------------------------------------------------------------------
               (Exact name of registrant as specified in charter)

         450 Lexington Avenue, Suite 3300, New York, New York 10017-3911
--------------------------------------------------------------------------------
               (Address of principal executive offices) (Zip code)

                               Eugene S. Stark
                    General American Investors Company, Inc.
                            450 Lexington Avenue
                                Suite 3300
                       New York, New York  10017-3911
                  (Name and address of agent for service)

                                    Copy to:
                           John E. Baumgardner, Jr., Esq.
                             Sullivan & Cromwell LLP
                                125 Broad Street
                            New York, New York 10004


        Registrant's telephone number, including area code: 212-916-8400

Date of fiscal year end:  December 31

Date of reporting period: June 30, 2005

 2
ITEM 1.  REPORTS TO STOCKHOLDERS.

                           GENERAL AMERICAN INVESTORS
                                  COMPANY, INC.


                               SEMI-ANNUAL REPORT
                                  JUNE 30, 2005

                         A Closed-End Investment Company
                      listed on the New York Stock Exchange




                              450 LEXINGTON AVENUE
                               NEW YORK, NY  10017
                          212-916-8400  1-800-436-8401
                       E-mail: InvestorRelations@gainv.com
                        www.generalamericaninvestors.com

 3
                               TO THE STOCKHOLDERS

For  the  six  months  ended  June  30,  2005,  the  investment  return  to  our
stockholders  was 3.1% (assuming  reinvestment of all dividends).  The net asset
value  per  Common  Share  increased  5.9%.  By  comparison,  the rate of return
(including income) for our benchmark, the Standard & Poor's 500 Stock Index, was
-0.8%. For the twelve months ended June 30, 2005, the return to our stockholders
was 10.2% and the  return on the net asset  value per  Common  Share was  14.6%;
these  compare with a return of 6.2% for the S&P 500.  During each  period,  the
discount at which our shares traded increased  slightly and at June 30, 2005, it
was 14.1%.

As set forth in the accompanying  financial statements  (unaudited),  as of June
30,  2005,  the  net  assets  applicable  to the  Company's  Common  Stock  were
$1,070,178,768, equal to $37.27 per Common Share.

The increase in net assets  resulting  from  operations for the six months ended
June 30, 2005 was  $56,880,773.  During this period,  the net  realized  gain on
securities sold was $23,212,019 and the increase in net unrealized  appreciation
was  $36,256,982.  Net  investment  income for the six months was $3,361,772 and
distributions to Preferred Stockholders amounted to $5,950,000.

During  the six  months,  636,204  shares of the  Company's  Common  Stock  were
repurchased  for  $19,701,744  at an average  discount  from net asset  value of
12.7%.

The  relatively  robust  returns  generated  thus far this year  come,  in large
measure,  from our  exposure  to  securities  related to the oil and natural gas
industries.  The  discount  to net  asset  value  at  which  our  shares  trade,
meanwhile,  has  continued  to widen,  inexplicably.  This gap has  created  the
opportunity to repurchase  shares on an especially  attractive  basis.  Over the
past 10 years the share price has ranged between a 2% premium and a 19% discount
to its net asset value.

We remain constructive with respect to security valuations.  Concerns abound, of
course,  including the costs of war finance,  the impact of rising energy prices
on consumer spending,  the loss of manufacturing jobs to foreign producers,  and
an apparent  housing  bubble in some  regions.  There exists,  furthermore,  the
prospect of an inverted  yield curve,  marked by interest  rates that are higher
for  short-dated   securities  than  for  long-term  bonds,  a  phenomenon  that
characteristically presages recession.  Importantly,  however, the U.S. is at or
near  full  employment,  inflation  remains  constrained,   interest  rates  are
relatively low, liquidity is ample, and earnings and dividends continue to grow.

On June 30,  2005,  Eugene L.  DeStaebler,  Jr.,  who had been an officer of the
Company  for  thirty  years,  and for  the  last  twenty-eight,  Vice-President,
Administration,  retired.  Mr. DeStaebler's broad knowledge and understanding of
the closed-end  investment  company industry,  his expertise in  administration,
oversight  of  the  accounting  function,  as  well  as his  guidance  regarding
compliance,  have been  highly  regarded by the Board of  Directors  and greatly
appreciated by the Company.  The Board of Directors is pleased to announce that,
at its meeting today,  Mr.  DeStaebler has agreed to continue as a consultant in
his capacity as Chief Compliance Officer until December 31, 2005.

We are also pleased to report that Eugene S. Stark, Vice-President since May 16,
2005, was appointed Vice-President, Administration. Prior to joining the Company
in May 2005,  Mr.  Stark,  a CPA,  served as the chief  financial  officer  of a
business  development company. Mr. Stark had been a vice president of Prudential
Financial,  Inc. (1987-2004) and, prior thereto, gained diverse audit experience
at Deloitte & Touche (1982-1987).

The information about the Company, including our investment objective, operating
policies  and  procedures,  investment  results,  record of  dividend  payments,
financial  reports and press releases,  is contained on our website and has been
updated  through  June  30,  2005.  It  can  be  accessed  on  the  Internet  at
www.generalamericaninvestors.com.

By Order of the Board of Directors,

General American Investors Company, Inc.

Spencer Davidson
President and Chief Executive Officer

July 13, 2005
 4

2        STATEMENT OF ASSETS AND LIABILITIES June 30, 2005 (Unaudited)
--------------------------------------------------------------------------------
                           General American Investors


ASSETS
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                       
INVESTMENTS, AT VALUE (NOTE 1a)
   Common stocks (cost $730,316,780)                                                          $1,242,580,577
   Corporate note (cost $709,754)                                                                    712,747
   Corporate discount notes (cost $17,948,900)                                                    17,948,900
   Money market fund (cost $19,634,850)                                                           19,634,850
                                                                                               -------------
      Total investments (cost $768,610,284)                                                    1,280,877,074

RECEIVABLES AND OTHER ASSETS
   Receivable for securities sold                                          $4,900,927
   Dividends, interest and other receivables                                  834,883
   Prepaid pension cost                                                     7,596,696
   Prepaid expenses and other assets                                          252,987             13,585,493
                                                                           ----------          -------------
TOTAL ASSETS                                                                                   1,294,462,567

LIABILITIES
-----------------------------------------------------------------------------------------------------------------------------------
   Payable for securities purchased                                        15,584,363
   Preferred dividend accrued but not yet declared                            231,389
   Accrued pension expense                                                  5,621,609
   Accrued expenses and other liabilities                                   2,846,438
                                                                           ----------
 
                                                                                                  24,283,799
TOTAL LIABILITIES

5.95% CUMULATIVE PREFERRED STOCK, SERIES B -
    8,000,000 shares at a liquidation value of $25 per share (note 2)                            200,000,000
                                                                                                ------------
NET ASSETS APPLICABLE TO COMMON STOCK - 28,717,595 shares (note 2)                            $1,070,178,768
                                                                                              ==============
NET ASSET VALUE PER COMMON SHARE                                                                      $37.27
                                                                                              ==============

Net Assets Applicable To Common Stock
------------------------------------------------------------------------------------------------------------------------------------
   Common Stock, 28,717,595 shares at par value (note 2)                  $28,717,595
   Additional paid-in capital (note 2)                                    507,429,475
   Undistributed realized gain on investments                              23,180,113
   Undistributed net investment income                                      4,766,184
   Unallocated distributions on Preferred Stock                            (6,181,389)
   Unrealized appreciation on investments                                 512,266,790
                                                                          -----------
NET ASSETS APPLICABLE TO COMMON STOCK                                                         $1,070,178,768
                                                                                              ==============

(see notes to financial statements)

 5

3     STATEMENT OF OPERATIONS Six Months Ended June 30, 2005 (Unaudited)
--------------------------------------------------------------------------------
                           General American Investors


INCOME
------------------------------------------------------------------------------------------------------------------------------------
                                                                                          
   Dividends (net of foreign withholding taxes of $213,043)                $8,853,709
   Interest                                                                   727,873             $9,581,582
                                                                          -----------
EXPENSES
------------------------------------------------------------------------------------------------------------------------------------
   Investment research                                                      3,706,917
   Administration and operations                                            1,848,094
   Office space and general                                                   259,286
   Directors' fees and expenses                                               102,520
   Transfer agent, custodian and registrar fees and expenses                   94,146
   Stockholders' meeting and reports                                           84,755
   Auditing and legal fees                                                     73,800
   Miscellaneous taxes                                                         50,292              6,219,810
                                                                            ---------             ----------
NET INVESTMENT INCOME                                                                              3,361,772

REALIZED GAIN AND CHANGE IN UNREALIZED APPRECIATION ON INVESTMENTS (NOTES 1f AND 4)
------------------------------------------------------------------------------------------------------------------------------------
   Net realized gain on investments:
     Long transactions                                                     23,011,600
     Short sale transaction (note 1b)                                        (755,114)
     Option transactions (note 1c)                                            955,533
                                                                           ----------
   Net realized gain on investments (long-term, except for $7,875,871)     23,212,019
   Net increase in unrealized appreciation                                 36,256,982
                                                                           ----------
NET GAIN ON INVESTMENTS                                                                           59,469,001
 
DISTRIBUTIONS TO PREFERRED STOCKHOLDERS                                                           (5,950,000)
                                                                                                ------------
INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                                                 $56,880,773
                                                                                                ============

(see notes to financial statements)

 6

4                       STATEMENT OF CHANGES IN NET ASSETS
--------------------------------------------------------------------------------
                             General American Investors



                                                                           Six Months
                                                                              Ended              Year Ended
                                                                          June 30, 2005         December 31,
OPERATIONS                                                                 (Unaudited)              2004   
------------------------------------------------------------------------------------------------------------------------------------
                                                                                       
   Net investment income                                                   $3,361,772             $9,253,481
   Net realized gain on investments                                        23,212,019             36,774,029
   Net increase in unrealized appreciation                                 36,256,982             62,361,773
                                                                          -----------             ----------
   Distributions to Preferred Stockholders:
      From net investment income                                                 -                (2,686,304)
      From long-term capital gains                                               -                (9,213,696)
      Unallocated distributions on Preferred Stock                         (5,950,000)                    -
                                                                          -----------            -----------
       Decrease in net assets from Preferred distributions                 (5,950,000)           (11,900,000)
                                                                          -----------            -----------

INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                           56,880,773             96,489,283
                                                                          -----------            -----------
DISTRIBUTIONS TO COMMON STOCKHOLDERS
------------------------------------------------------------------------------------------------------------------------------------
   From net investment income                                                 (58,303)            (6,602,940)
   From long-term capital gains                                            (7,929,239)           (22,647,281)
                                                                           ----------            -----------
DECREASE IN NET ASSETS FROM COMMON DISTRIBUTIONS                           (7,987,542)           (29,250,221)
                                                                           ----------            -----------
CAPITAL SHARE TRANSACTIONS
------------------------------------------------------------------------------------------------------------------------------------
   Value of Common Shares issued in payment of distributions (note 2)       4,594,188             15,781,952
   Cost of Common Shares purchased (note 2)                               (19,701,744)           (32,963,032)
                                                                          -----------            -----------
DECREASE IN NET ASSETS - CAPITAL TRANSACTIONS                             (15,107,556)           (17,181,080)
                                                                          -----------           -----------
NET INCREASE IN NET ASSETS                                                 33,785,675             50,057,982
Net Assets Applicable to Common Stock
------------------------------------------------------------------------------------------------------------------------------------
BEGINNING OF PERIOD                                                     1,036,393,093            986,335,111
                                                                        -------------            ------------
END OF PERIOD (including undistributed net investment income of 
   $4,766,184 and $1,462,715, respectively)                            $1,070,178,768         $1,036,393,093
                                                                       ==============        ===============
(see notes to financial statements)


 7
5                             FINANCIAL HIGHLIGHTS
--------------------------------------------------------------------------------
                           General American Investors

The following table shows per share operating performance data, total investment
return,  ratios and supplemental data for the six months ended June 30, 2005 and
for each year in the five-year  period ended December 31, 2004. This information
has been derived from  information  contained in the  financial  statements  and
market price data for the Company's shares.



                                           Six Months
                                             Ended                             Year Ended December 31,
                                         June 30, 2005   ------------------------------------------------------------
                                          (Unaudited)       2004      2003      2002          2001       2000
                                         ------------    ------------------------------------------------------------
                                                                                      

PER SHARE OPERATING PERFORMANCE
   Net asset value, beginning of period      $35.49       $33.11   $26.48        $35.14       $39.91        $41.74
                                             ------       ------  -------        ------       ------        ------
      Net investment income                     .12          .32      .03           .19          .41           .53
      Net gain (loss) on securities -
        realized and unrealized                2.14         3.48     7.72         (7.88)        (.66)         6.12
                                             ------       ------  -------        ------       ------        ------

      Distributions on Preferred Stock:
        Dividends from investment income       -            (.09)    (.01)         (.12)        (.07) (a)     (.11) (b)
        Distributions from capital gains       -            (.32)    (.35)         (.23)        (.29)         (.29)
        Unallocated                            (.21)          -         -            -             -             -
                                             ------       ------  -------        ------       ------        ------
                                               (.21)        (.41)    (.36)         (.35)        (.36)         (.40)
                                             ------       ------  -------        ------       ------        ------
   Total from investment operations            2.05         3.39     7.39         (8.04)        (.61)         6.25
                                             ------       ------  -------        ------       ------        ------

   Less distributions on Common Stock:
        Dividends from investment income       -            (.23)    (.02)         (.21) (c)     (.88) (d)   (2.30) (e)
        Distributions from capital gains       (.27)        (.78)    (.52)         (.41)        (3.28)       (5.78)
                                             ------       ------  -------        ------        ------        ------
                                               (.27)       (1.01)    (.54)         (.62)        (4.16)       (8.08)
                                             ------       ------  -------        ------        ------        ------
 
   Capital Stock transaction -
      effect of Preferred Stock offering       -             -       (.22)         -             -             -
                                             ------       ------  -------        ------       ------        ------
   Net asset value, end of period            $37.27       $35.49   $33.11        $26.48       $35.14        $39.91
                                             ======       ======  =======        ======       ======        ======
 
   Per share market value, end of period     $32.00       $31.32   $29.73        $23.85       $33.47        $36.00
                                             ======       ======  =======        ======       ======        ======
 
   TOTAL INVESTMENT RETURN - Stockholder
   Return, based on market price per share     3.08%*       8.79%   27.01%       (27.21)%       4.33%        19.10%

RATIOS AND SUPPLEMENTAL DATA
   Net assets applicable to Common Stock,
      end of period (000's omitted)      $1,070,560   $1,036,393 $986,335      $809,192   $1,097,530    $1,155,039
   Ratio of expenses to average net assets
      applicable to Common Stock               1.22%**      1.15%    1.23%         0.92%        0.97%         1.05%
   Ratio of net income to average net assets
      applicable to Common Stock               0.66%**      0.94%    0.13%         0.61%        1.15%         1.24%
   Portfolio turnover rate                     8.61%*      16.71%   18.62%        22.67%       23.81%        40.61%
PREFERRED STOCK
   Liquidation value, end of 
      period (000's omitted)               $200,000    $200,000   $200,000     $150,000     $150,000      $150,000
   Asset coverage                               635%        618%      593%          639%         832%          870%
   Liquidation preference per share          $25.00       $25.00    $25.00       $25.00       $25.00        $25.00
   Market value per share                    $25.09       $24.97    $25.04       $25.85       $25.90        $24.25


   (a) Includes short-term capital gain in the amount of $.04 per share.
   (b) Includes short-term capital gain in the amount of $.09 per share.
   (c) Includes short-term capital gain in the amount of $.19 per share.
   (d) Includes short-term capital gain in the amount of $.51 per share.
   (e) Includes short-term capital gain in the amount of $1.82 per share.
      *Not annualized
     **Annualized


 8
6              STATEMENT OF INVESTMENTS June 30, 2005 (Unaudited)
--------------------------------------------------------------------------------
                           General American Investors


    Shares or                                                                                       Value
Principal Amount COMMON STOCKS                                                                    (note 1a)
------------------------------------------------------------------------------------------------------------------------------------
BUILDING AND REAL ESTATE (4.5%)
------------------------------------------------------------------------------------------------------------------------------------
                                                                                        
   1,143,041    CEMEX, S.A. de C.V. ADR                                (COST $30,440,830)        $48,487,799
                                                                                                 -----------

COMMUNICATIONS AND INFORMATION SERVICES (7.2%)
------------------------------------------------------------------------------------------------------------------------------------
     675,000    American Tower Corporation (a)                                                    14,188,500
     550,000    CIENA Corporation (a)                                                              1,149,500
     900,000    Cisco Systems, Inc. (a)                                                           17,172,000
     150,000    Juniper Networks, Inc. (a)                                                         3,777,000
     500,000    Lamar Advertising Company Class A (a)                                             21,385,000
   4,600,000    Telecom Corporation of New Zealand Limited                                        19,228,000
                                                                                                 -----------
                                                                       (COST $69,828,479)         76,900,000
                                                                                                 -----------
COMPUTER SOFTWARE AND SYSTEMS (4.6%)
------------------------------------------------------------------------------------------------------------------------------------
     300,000    EMC Corporation (a)                                                                4,113,000
   1,525,000    Microsoft Corporation                                                             37,881,000
     323,000    NetIQ Corporation (a)                                                              3,659,590
     133,500    VeriSign, Inc. (a)                                                                 3,839,460
                                                                                                  ----------
                                                                       (COST $49,555,813)         49,493,050
                                                                                                  ----------
CONSUMER PRODUCTS AND SERVICES (3.6%)
------------------------------------------------------------------------------------------------------------------------------------
     350,000    Diageo plc                                                                        20,755,000
     275,000    Ethan Allen Interiors Inc.                                                         9,215,250
     150,000    PepsiCo, Inc.                                                                      8,089,500
                                                                                                  ----------
                                                                       (COST $28,303,579)         38,059,750
                                                                                                  ----------
ELECTRONICS (1.6%)
------------------------------------------------------------------------------------------------------------------------------------
     715,000    Molex Incorporated Class A                             (COST $15,450,691)         16,788,200
                                                                                                  ----------



ENVIRONMENTAL CONTROL (INCLUDING SERVICES) (3.9%)
------------------------------------------------------------------------------------------------------------------------------------
   1,175,000    Republic Services, Inc.                                (COST $26,227,380)         42,311,750
                                                                                                  ----------

FINANCE AND INSURANCE (28.5%)
------------------------------------------------------------------------------------------------------------------------------------
   BANKING (9.3%)
------------------------------------------------------------------------------------------------------------------------------------
     325,000    Bank of America Corporation                                                       14,823,250
     585,000    Golden West Financial Corporation                                                 37,662,300
     310,000    M&T Bank Corporation                                                              32,599,600
     200,000    SunTrust Banks, Inc.                                                              14,448,000
                                                                                                  ----------
                                                                       (COST $19,811,943)         99,533,150
                                                                                                  ----------
   INSURANCE (18.0%)
------------------------------------------------------------------------------------------------------------------------------------
     350,000    American International Group, Inc.                                                20,335,000
     500,000    Annuity and Life Re (Holdings), Ltd. (a)                                             375,000
     340,000    Arch Capital Group Ltd. (a)                                                       15,317,000
         300    Berkshire Hathaway Inc. Class A (a)                                               25,050,000
     585,000    Everest Re Group, Ltd.                                                            54,405,000
     365,000    MetLife, Inc.                                                                     16,403,100
     110,000    Montpelier Re Holdings Ltd.                                                        3,803,800
     425,000    PartnerRe Ltd.                                                                    27,378,500
     325,000    Reinsurance Group of America, Incorporated                                        15,115,750
     257,500    Transatlantic Holdings, Inc.                                                      14,373,650
                                                                                                 -----------
                                                                       (COST $84,798,680)        192,556,800
                                                                                                 -----------
   OTHER (1.2%)
------------------------------------------------------------------------------------------------------------------------------------
     250,000    Annaly Mortgage Management, Inc.                                                   4,482,500
      95,194    Central Securities Corporation                                                     2,302,743
     825,000    MFA Mortgage Investments, Inc.                                                     6,146,250
                                                                                                  ----------
                                                                       (COST $12,310,420)         12,931,493
                                                                                                 -----------
                                                                      (COST $116,921,043)        305,021,443
                                                                                                 -----------

 9
7        STATEMENT OF INVESTMENTS June 30, 2005 (Unaudited) - continued
--------------------------------------------------------------------------------
                           General American Investors


     Shares or                                                                                       Value
 Principal Amount COMMON STOCKS (continued)                                                        (note 1a)
------------------------------------------------------------------------------------------------------------------------------------
HEALTH CARE  (11.5%)
------------------------------------------------------------------------------------------------------------------------------------
   PHARMACEUTICALS (9.3%)
   ---------------------------------------------------------------------------------------------------------------------------------
                                                                                      
     340,000    Alkermes, Inc. (a)                                                                $4,494,800
     200,000    Biogen Idec Inc. (a)                                                               6,890,000
     240,000    Bristol-Myers Squibb Company                                                       5,995,200
     550,000    Cytokinetics, Incorporated (a)                                                     3,817,000
     270,000    Genaera Corporation (a)                                                              459,000
     365,000    Genentech, Inc. (a)                                                               29,302,200
     455,000    MedImmune, Inc. (a)                                                               12,157,600
     120,000    Millennium Pharmaceuticals, Inc. (a)                                               1,112,400
   1,275,000    Pfizer Inc                                                                        35,164,500
                                                                                                  ----------
                                                                       (COST $72,502,935)         99,392,700
                                                                                                  ----------
   MEDICAL INSTRUMENTS AND DEVICES (2.2%)
   ---------------------------------------------------------------------------------------------------------------------------------
     450,000    Medtronic, Inc.                                        (COST $10,483,716)         23,305,500
                                                                                                  ----------

                                                                       (COST $82,986,651)        122,698,200
                                                                                                 -----------
MISCELLANEOUS (3.7%)
------------------------------------------------------------------------------------------------------------------------------------
                Other (b)                                              (COST $38,078,961)         39,861,160
                                                                                                 -----------
 OIL & NATURAL GAS (INCLUDING SERVICES) (26.7%)
------------------------------------------------------------------------------------------------------------------------------------
     665,000    Apache Corporation                                                                42,959,000
   1,600,000    Devon Energy Corporation                                                          81,088,000
     600,000    EOG Resources, Inc.                                                               34,080,000
     525,000    Halliburton Company                                                               25,105,500
     650,000    Patterson-UTI Energy, Inc.                                                        18,089,500
     645,000    Talisman Energy Inc.                                                              24,232,650
     330,000    Total S.A. ADR                                                                    38,560,500
     325,000    Unocal Corporation                                                                21,141,250
                                                                                                 -----------
                                                                      (COST $178,177,362)        285,256,400
                                                                                                 -----------
RETAIL TRADE (19.6%)
------------------------------------------------------------------------------------------------------------------------------------
     700,000    Costco Wholesale Corporation                                                      31,311,000
     500,000    Dollar General Corporation                                                        10,180,000
   1,920,000    The Home Depot, Inc. (c)                                                          74,688,000
   2,500,000    The TJX Companies, Inc.                                                           60,875,000
     675,000    Wal-Mart Stores, Inc.                                                             32,535,000
                                                                                                 -----------
                                                                       (COST $78,446,127)        209,589,000
                                                                                                 -----------
SEMICONDUCTORS (0.7%)
------------------------------------------------------------------------------------------------------------------------------------
     491,500    Brooks Automation, Inc. (a)                                                        7,298,775
     197,000    EMCORE Corporation (a)                                                               813,610
                                                                                                   ---------
                                                                        (COST $9,890,144)          8,112,385
                                                                                                   ---------
SPECIAL HOLDINGS (a) (d) (NOTE 5) (0.0%)
------------------------------------------------------------------------------------------------------------------------------------
     144,000    Silicon Genesis Corporation                                                            1,440
     546,000    Standard MEMS, Inc. Series A Convertible Preferred                                         -
                                                                                                    --------
                                                                        (COST $6,009,720)              1,440 (e)
                                                                                                    --------

   TOTAL COMMON STOCKS (116.1%)                                       (COST $730,316,780)      1,242,580,577
                                                                                               -------------

                CORPORATE NOTE
------------------------------------------------------------------------------------------------------------------------------------
COMMUNICATIONS AND INFORMATION SERVICES  (0.1%)
------------------------------------------------------------------------------------------------------------------------------------
    $678,000    American Tower Corporation 9 3/8% due 2/1/09              (COST $709,754)            712,747
                                                                                                     -------

 10

8        STATEMENT OF INVESTMENTS June 30, 2005 (Unaudited) - continued
--------------------------------------------------------------------------------
                           General American Investors


     Principal                                                                                       Value
      Amount    SHORT-TERM SECURITIES AND OTHER ASSETS                                             (note 1a)
------------------------------------------------------------------------------------------------------------------------------------
                                                                                        
  $6,000,000    American General Finance Corporation note due 7/11/05; 3.08%                      $5,982,033
   6,000,000    General Electric Capital Corporation note due 7/18/05; 3.12%                       5,981,800
   6,000,000    Prudential Funding, LLC note due 7/25/05; 3.20%                                    5,985,067
  19,634,850    SSgA Prime Money Market Fund                                                      19,634,850
                                                                                                  ----------
                TOTAL SHORT-TERM SECURITIES (3.5%)                   (COST $37,583,750)           37,583,750
                                                                                               -------------
TOTAL INVESTMENTS (f) (119.7%)                                      (COST $768,610,284)        1,280,877,074
Liabilities in excess of receivables and other assets (-1.0%)                                    (10,698,306)
PREFERRED STOCK (-18.7%)                                                                        (200,000,000)
                                                                                              --------------
NET ASSETS APPLICABLE TO COMMON STOCK (100%)                                                  $1,070,178,768
                                                                                              ==============


 (a) Non-income producing security.
 (b) Securities which have been held for less than one year, not previously disclosed and not restricted.
 (c) 1,000,000 shares held by custodian in a segregated account as collateral for open short positions.
 (d) Restricted security.
 (e) Fair value of each holding in the opinion of the directors.
 (f) At June 30, 2005: (1) the cost of investments for Federal income tax purposes was the same as the cost
     for financial reporting purposes, (2) aggregate gross unrealized appreciation was $553,771,964,
     (3) aggregate gross unrealized depreciation was $41,505,174, and (4) net unrealized appreciation was
     $512,266,790.
 
(see notes to financial statements)




                     PORTFOLIO DIVERSIFICATION (Unaudited)
--------------------------------------------------------------------------------
                           General American Investors

The  diversification  of the Company's net assets applicable to its Common Stock
by industry group as of June 30, 2005 and 2004 is shown in the following table.



                                                                                PERCENT COMMON NET ASSETS*
                                                   JUNE 30, 2005                         JUNE 30
                                            ----------------------------        ----------------------------
INDUSTRY CATEGORY                            Cost(000)        Value(000)            2005            2004
-----------------------------------------   ----------------------------        ----------------------------
                                                                                     
Finance and Insurance
    Banking                                 $19,812           $99,533                9.3%          9.5%
    Insurance                                84,799           192,557               18.0          18.8
    Other                                    12,310            12,931                1.2           2.3
                                            -------           -------             -------        -----
                                            116,921           305,021               28.5          30.6
                                            -------           -------             -------        -----
Oil and Natural Gas (Including Services)    178,177           285,256               26.7          10.8
Retail Trade                                 78,446           209,589               19.6          19.6
                                            -------           -------             -------        -----
Health Care
    Pharmaceuticals                          72,503            99,393                9.3          15.4
    Medical Instruments and Devices          10,484            23,306                2.2           2.2
                                            -------           -------             -------        -----
                                             82,987           122,699               11.5          17.6
                                            -------           -------             -------        -----
Communications and Information Services      70,538            77,613                7.3           5.2
Computer Software and Systems                49,556            49,493                4.6           6.3
Building and Real Estate                     30,441            48,488                4.5           1.6
Environmental Control (Including Services)   26,227            42,312                3.9           3.5
Miscellaneous**                              38,079            39,861                3.7           4.5
Consumer Products and Services               28,303            38,060                3.6           3.8
Electronics                                  15,451            16,788                1.6           2.0
Semiconductors                                9,890             8,112                0.7           1.4
Special Holdings                              6,010                 1                0.0           0.2
                                            -------         ---------             -------        -----
                                            731,026         1,243,293              116.2         107.1
Short-Term Securities                        37,584            37,584                3.5          13.7
                                            -------         ---------             -------        -----
    Total Investments                      $768,610         1,280,877              119.7         120.8
                                           ========
Liabilities in excess of Other Assets - Net                   (10,698)              (1.0)         (0.5)
Preferred Stock                                              (200,000)             (18.7)        (20.3)
                                                           ----------             -------        ----- 
Net Assets Applicable to Common Stock                      $1,070,179              100.0%        100.0%
                                                           ==========             =======        ===== 

*    Net Assets applicable to the Company's Common Stock.
**  Securities which have been held for less than one year, not previously disclosed and not restricted.


 11

9                  NOTES TO FINANCIAL STATEMENTS (Unaudited)
--------------------------------------------------------------------------------
                           General American Investors

                       1. SIGNIFICANT ACCOUNTING POLICIES

General American Investors Company,  Inc. (the "Company"),  established in 1927,
is  registered  under  the  Investment  Company  Act of  1940  as a  closed-end,
diversified  management  investment  company.  It is  internally  managed by its
officers under the direction of the Board of Directors.

The preparation of financial statements in conformity with accounting principles
generally  accepted in the United States  requires  management to make estimates
and assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.

a. SECURITY VALUATION  Securities traded on a national  securities  exchange are
valued at the last reported  sales price on the last business day of the period.
Securities  reported on the NASDAQ  national  market are valued at the  official
closing price on that day. Listed  and NASDAQ  securities for which no sales are
reported on that day and other securities traded in the over-the-counter  market
are  valued  at the last bid  price on the  valuation  date.  Securities  traded
primarily in foreign markets are generally valued at the preceding closing price
of such securities on their respective exchanges or markets. If, after the close
of the foreign market,  conditions  change  significantly,  the price of certain
foreign  securities  may be adjusted to reflect fair value as of the time of the
valuation of the  portfolio.  Corporate  discount  notes are valued at amortized
cost, which approximates market value. Special holdings (restricted  securities)
and other securities for which  quotations are not readily  available are valued
at fair value determined in good faith pursuant to procedures established by and
under the general supervision of the Board of Directors.

b.  SHORT  SALES The  Company  may make  short  sales of  securities  for either
speculative or hedging purposes. When the Company makes a short sale, it borrows
the securities  sold short from a broker;  in addition,  the Company places cash
with that broker and securities in a segregated account with the custodian, both
as collateral for the short  position.  The Company may be required to pay a fee
to borrow the securities and may also be obligated to pay any dividends declared
on the  borrowed  securities.  The Company  will  realize a gain if the security
price decreases and a loss if the security price  increases  between the date of
the  short  sale  and the  date on  which  the  Company  replaces  the  borrowed
securities.

c. OPTIONS The Company may purchase and write (sell) put and call  options.  The
risk  associated  with  purchasing  an option is that the Company pays a premium
whether or not the option is exercised. Additionally, the Company bears the risk
of loss of the premium and a change in market value should the  counterparty not
perform under the contract.  Put and call options purchased are accounted for in
the same manner as portfolio securities.  Premiums received from writing options
that expire  unexercised  are treated by the Company on the  expiration  date as
realized gains from investments. The difference between the premium received and
the amount paid on effecting a closing purchase transaction, including brokerage
commissions, is also treated as a realized gain, or, if the premium is less than
the amount paid for the closing purchase  transaction,  as a realized loss. If a
call option is exercised,  the premium is added to the proceeds from the sale of
the underlying  security in determining  whether the Company has realized a gain
or loss.  If a put option is exercised,  the premium  reduces the cost basis for
the  securities  purchased  by the  Company.  The Company as writer of an option
bears the  market  risk of an  unfavorable  change in the price of the  security
underlying the written option.

d. FEDERAL INCOME TAXES The Company's  policy is to fulfill the  requirements of
the Internal  Revenue Code applicable to regulated  investment  companies and to
distribute substantially all taxable income to its stockholders. Accordingly, no
provision for Federal income taxes is required.

e. INDEMNIFICATIONS In the ordinary course of business,  the Company enters into
contracts  that contain a variety of  indemnifications.  The  Company's  maximum
exposure under these arrangements is unknown.  However,  the Company has not had
prior claims or losses pursuant to these indemnification  provisions and expects
the risk of loss thereunder to be remote.

f.  OTHER  As  customary  in  the  investment   company   industry,   securities
transactions   are  recorded  as  of  the  trade  date.   Dividend   income  and
distributions to stockholders are recorded as of the ex-dividend dates. Interest
income,  adjusted for  amortization of discount and premium on  investments,  is
earned from  settlement  date and is  recognized on the accrual  basis.  Cost of
short-term investments represents amortized cost.

                   2. CAPITAL STOCK AND DIVIDEND DISTRIBUTIONS

The  authorized  capital stock of the Company  consists of 50,000,000  shares of
Common Stock,  $1.00 par value, and 10,000,000 shares of Preferred Stock,  $1.00
par value, of which 28,717,595 shares and 8,000,000 shares,  respectively,  were
outstanding at June 30, 2005.

On September 24, 2003, the Company issued and sold 8,000,000 shares of its 5.95%
Cumulative Preferred Stock, Series B in an underwritten  offering. The Preferred
Shares are noncallable  for 5 years and have a liquidation  preference of $25.00
per share plus an amount equal to accumulated  and unpaid  dividends to the date
of redemption.  The underwriting discount and other expenses associated with the
Preferred  Stock  offering  amounted to  $6,700,000  and were charged to paid-in
capital.

The Company is required to allocate  distributions  from long-term capital gains
and other  types of income  proportionately  among  holders  of shares of Common
Stock and  Preferred  Stock.  To the  extent  that  dividends  on the  shares of
Preferred  Stock are not paid from long-term  capital  gains,  they will be paid
from ordinary income or net short-term  capital gains or will represent a return
of capital.

Under the Investment Company Act of 1940, the Company is required to maintain an
asset coverage of at least 200% for the Preferred  Stock. In addition,  pursuant
to the Rating Agency  Guidelines,  the Company is required to maintain a certain
discounted  asset  coverage for its  portfolio  that equals or exceeds the Basic
Maintenance  Amount  under  the  guidelines  established  by  Moody's  Investors
Service,  Inc. The Company has met these  requirements since the issuance of the
Preferred  Stock. If the Company fails to meet these  requirements in the future
and does not cure such failure,  the Company may be required to redeem, in whole
or in part,  shares of Preferred Stock at a redemption price of $25.00 per share
plus  accumulated and unpaid dividends  (whether or not earned or declared).  In
addition,   the  Company's   failure  to  meet  the  foregoing   asset  coverage
requirements  could  restrict  its ability to pay  dividends on shares of Common
Stock and could lead to sales of portfolio securities at inopportune times.

The holders of Preferred  Stock have voting  rights  equivalent  to those of the
holders of Common Stock (one vote per share) and, generally,  vote together with
the holders of Common Stock as a single class.

At all times, holders of Preferred Stock will elect two members of the Company's
Board of Directors and the holders of Preferred  and Common  Stock,  voting as a
single class,  will elect the remaining  directors.  If the Company fails to pay
dividends  on  the  Preferred  Stock  in an  amount  equal  to two  full  years'
dividends,  the  holders  of  Preferred  Stock  will  have the  right to elect a
majority of the directors. In
 12

10              NOTES TO FINANCIAL STATEMENTS (Unaudited) - continued
--------------------------------------------------------------------------------
                           General American Investors

                  2. CAPITAL STOCK AND DIVIDEND DISTRIBUTIONS - 
                     (Continued from bottom of previous page.)

addition,  the  Investment  Company Act of 1940  requires  that  approval of the
holders of a majority of any outstanding  Preferred Shares, voting separately as
a class,  would be required to (a) adopt any plan of  reorganization  that would
adversely affect the Preferred Stock and (b) take any action requiring a vote of
security  holders,  including,  among  other  things,  changes in the  Company's
subclassification  as  a  closed-end   investment  company  or  changes  in  its
fundamental investment policies.

The Company  classifies its Preferred Stock pursuant to the requirements of EITF
D-98,  Classification  and Measurement of Redeemable  Securities,  which require
that  preferred  stock for which its  redemption  is  outside  of the  company's
control should be presented outside of net assets in the statement of assets and
liabilities.

Transactions  in Common  Stock during the six months ended June 30, 2005 and the
year ended December 31, 2004 were as follows:


                                                                              SHARES                      AMOUNT
                                                                       ------------------        ------------------------
                                                                          2005      2004              2005        2004
                                                                                                 
Shares issued in payment of dividends (includes 148,487
   and 508,849 shares issued from treasury, respectively)               148,487    508,849          $148,487     $508,849
Increase in paid-in capital                                                                        4,445,701   15,273,103
                                                                                                ------------    ----------
   Total increase                                                                                  4,594,188   15,781,952
                                                                                                ------------    ----------

Shares purchased (at an average discount from net
   asset value of 12.7% and 10.3%, respectively)                        636,204  1,092,800          (636,204)  (1,092,800)
Decrease in paid-in capital                                                                      (19,065,540) (31,870,232)
                                                                                                ------------  -----------
   Total decrease                                                                                (19,701,744) (32,963,032)
                                                                                                ------------  -----------
Net decrease                                                                                    ($15,107,556)($17,181,080)
                                                                                                ============  ===========

At June 30, 2005,  the Company held in its treasury  2,513,968  shares of Common
Stock with an aggregate cost in the amount of $65,687,956.

Distributions for tax and book purposes are substantially the same.



                            3. OFFICERS' COMPENSATION

The aggregate  compensation paid by the Company during the six months ended June
30, 2005 to its officers amounted to $2,936,250.


                      4. PURCHASES AND SALES OF SECURITIES

Purchases  and  sales of  securities  and  securities  sold  short  (other  than
short-term  securities  and  options)  for the six months  ended  June 30,  2005
amounted to on long transactions  $106,261,670 and  $102,262,247,  respectively,
and,  with  respect to short  sale  transactions,  purchases  for the six months
amounted to $3,825,799.

 

                            5. RESTRICTED SECURITIES


                                                            DATE                         VALUE
                                                          ACQUIRED         COST        (NOTE 1a)
                                                        ------------   -----------   -----------
                                                                                 
Silicon Genesis Corporation                                2/16/01      $3,006,720        $1,440
Standard MEMS, Inc. Series A Convertible Preferred        12/17/99       3,003,000           -
                                                                        ----------   -----------
Total                                                                   $6,009,720        $1,440
                                                                        ==========   ===========



                            6. PENSION BENEFIT PLANS

The Company has funded (Qualified) and unfunded  (Supplemental)  noncontributory
defined benefit pension plans that cover substantially all of its employees. The
plans  provide  defined  benefits  based on years of service  and final  average
salary with an offset for a portion of social security covered compensation. The
components  of the net  periodic  benefit  cost of the plans for the six  months
ended June 30, 2005 were:

                  Service cost                               $153,864
                  Interest cost                               324,005
                  Expected return on plan assets             (538,968)
                  Amortization of:
                     Prior service cost                        18,837
                     Recognized net actuarial loss (gain)      76,498
                                                             --------
                  Net periodic benefit cost (income)          $34,236
                                                             ========


The  Company  also has funded and  unfunded  contributory  defined  contribution
thrift plans that cover substantially all employees.  The aggregate cost of such
plans  for the six  months  ended  June 30,  2005  was  $235,465.  The  unfunded
liability included in accrued expenses and other liabilities at June 30, 2005 
was $2,589,851.
 13

11            NOTES TO FINANCIAL STATEMENTS (Unaudited) - continued
--------------------------------------------------------------------------------
                           General American Investors


                          7. OPERATING LEASE COMMITMENT

In July 1992, the Company  entered into an operating  lease agreement for office
space  which  expires in 2007 and  provides  for future  rental  payments in the
aggregate amount of approximately  $5.6 million.  The lease agreement contains a
clause  whereby the Company  received  twenty  months of free rent  beginning in
December  1992 and  escalation  clauses  relating  to  operating  costs and real
property taxes.

Rental  expense  approximated  $148,000  for the six months ended June 30, 2005.
Minimum rental commitments under the operating lease are approximately  $505,000
per annum in 2005 through 2007.

In January 2003, the Company extended a sublease agreement  (originally  entered
into in March  1996)  which  expires  in 2007 and  provides  for  future  rental
receipts.  Minimum rental receipts under the sublease are approximately $254,000
per annum in 2005 through 2007. The Company will also receive its  proportionate
share of operating expenses and real property taxes under the sublease.

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

       MAJOR STOCK CHANGES* Three Months Ended June 30, 2005 (Unaudited)
--------------------------------------------------------------------------------
                         General American Investors




                                                                                                SHARES HELD
INCREASES                                                                   SHARES            JUNE 30, 2005
------------------------------------------------------------------------------------------------------------------------------------
                                                                                            
NEW POSITIONS
   Dollar General Corporation                                                   -                 500,000 (a)
   Talisman Energy Inc.                                                    645,000                645,000
 
ADDITIONS
   American Tower Corporation                                              125,000                675,000
   MFA Mortgage Investments, Inc.                                           50,000                825,000
   Transatlantic Holdings, Inc.                                              8,000                257,500
 
DECREASES
------------------------------------------------------------------------------------------------------------------------------------
REDUCTIONS
   American International Group, Inc.                                       30,000                350,000
   Annaly Mortgage Management, Inc.                                         25,000                250,000
   Bank of America Corporation                                              43,000                325,000
   Bristol-Myers Squibb Company                                             60,000                240,000
   Everest Re Group, Ltd.                                                   40,000                585,000
   Genentech, Inc.                                                          35,000                365,000
   Golden West Financial Corporation                                        15,000                585,000
   MetLife, Inc.                                                            35,000                365,000
   NetIQ Corporation                                                       300,000                323,000
   PartnerRe Ltd.                                                           50,000                425,000
   Reinsurance Group of America, Incorporated                               25,000                325,000
   SunTrust Banks, Inc.                                                      5,000                200,000
   Unocal Corporation                                                      425,000                325,000

 
*   Excludes transactions in Stocks - Miscellaneous - Other.
(a) Securities purchased in prior period and previously carried under Stocks - Miscellaneous - Other.



--------------------------------------------------------------------------------
                           OTHER MATTERS (Unaudited)
--------------------------------------------------------------------------------
                          General American Investors

In addition to purchases of the Company's Common Stock as set forth in Note 2 on
page 10, purchases of Common Stock may be made at such times, at such prices, in
such amounts and in such manner as the Board of Directors may deem advisable.

The policies and procedures used by the Company to determine how to vote proxies
relating to portfolio  securities and the Company's  proxy voting record for the
twelve-month period ended June 30, 2005 are available:  (1) without charge, upon
request, by calling us at our toll-free telephone number  (1-800-436-8401),  (2)
on the  Company's  website  at  www.generalamericaninvestors.com  and (3) on the
Securities and Exchange Commission's website at www.sec.gov.

In addition to distributing  financial statements as of the end of each quarter,
General  American  Investors  files a Quarterly  Schedule of Portfolio  Holdings
(Form N-Q) with the  Securities and Exchange  Commission  (SEC) as of the end of
the first and third calendar quarters.  The Company's Forms N-Q are available on
the SEC's website:  www.sec.gov.  Also,  Forms N-Q may be reviewed and copied at
the SEC's Public Reference Room in Washington,  DC. Information on the operation
of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.  A
copy of the Company's  Form N-Q is available on the  Company's  website as shown
above.
 14

                                    DIRECTORS
--------------------------------------------------------------------------------

                       Lawrence B. Buttenwieser, Chairman
              Arthur G. Altschul, Jr.           Sidney R. Knafel
              Lewis B. Cullman                  Richard R. Pivirotto
              Spencer Davidson                  D. Ellen Shuman
              Gerald M. Edelman                 Joseph T. Stewart, Jr.
              John D. Gordan, III               Raymond S. Troubh

                        William O. Baker, Director Emeritus
                        William T. Golden, Director Emeritus

                                    OFFICERS
--------------------------------------------------------------------------------

Spencer Davidson, President & Chief Executive Officer
Andrew V. Vindigni, Vice-President
Eugene S. Stark, Vice-President, Administration
Peter P. Donnelly, Vice-President & Trader
Diane G. Radosti, Treasurer
Carole Anne Clementi, Secretary
Craig A. Grassi, Assistant Vice-President
Maureen E. LoBello, Assistant Secretary
Eugene L. DeStaebler, Jr., Chief Compliance Officer

                                SERVICE COMPANIES
--------------------------------------------------------------------------------

COUNSEL
Sullivan & Cromwell LLP

INDEPENDENT AUDITORS
Ernst & Young LLP

CUSTODIAN
State Street Bank and
  Trust Company

TRANSFER AGENT AND REGISTRAR
American Stock Transfer & Trust
  Company
59 Maiden Lane
New York, NY  10038
1-800-413-5499
www.amstock.com

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
--------------------------------------------------------------------------------

To the Board of Directors and Stockholders of
GENERAL AMERICAN INVESTORS COMPANY, INC.

     We have reviewed the  accompanying  statement of assets and  liabilities of
General  American   Investors   Company,   Inc.,   including  the  statement  of
investments,  as of June 30, 2005, and the related  statements of operations and
changes in net assets and financial  highlights  for the six-month  period ended
June 30, 2005.  These  financial  statements  and financial  highlights  are the
responsibility of the Company's management.

     We  conducted  our review in  accordance  with the  standards of the Public
Company  Accounting  Oversight  Board  (United  States).  A  review  of  interim
financial  information consists principally of applying analytical procedures to
financial  data, and making  inquiries of persons  responsible for financial and
accounting  matters.  It is  substantially  less  in  scope  than  an  audit  in
accordance with the standards of the Public Company Accounting  Oversight Board,
the objective of which is the  expression of an opinion  regarding the financial
statements taken as a whole. Accordingly, we do not express such an opinion.

     Based on our review,  we are not aware of any material  modifications  that
should be made to the interim financial statements referred to above for them to
be in conformity with  accounting  principles  generally  accepted in the United
States.

     We have previously  audited, in accordance with the standards of the Public
Company  Accounting  Oversight Board, the statement of changes in net assets for
the year ended  December 31, 2004 and financial  highlights for each of the five
years in the period then ended and in our report,  dated  January 19,  2005,  we
expressed an  unqualified  opinion on such  financial  statements  and financial
highlights.

New York, New York                                            ERNST & YOUNG LLP
July 13, 2005


 15
ITEM 2. CODE OF ETHICS.

Not applicable to this semi-annual report.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

Not applicable to this semi-annual report.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable to this semi-annual report.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable to this semi-annual report.

ITEM 6. SCHEDULE OF INVESTMENTS

The schedule of investments in securities of unaffiliated issuers is included as
part of the report to stockholders filed under Item 1 of this form.

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

                    General American Investors Company, Inc.

                      PROXY VOTING POLICIES AND PROCEDURES


     General  American  Investors  Company,  Inc.  (the  "Company")  is uniquely
structured as an internally managed closed-end  investment company. Our research
efforts,  including the receipt and analysis of proxy  material,  are focused on
the securities in the Company's  portfolio,  as well as  alternative  investment
opportunities.  We vote proxies relating to our portfolio securities in the best
long-term interests of the Company.

     Our investment  approach  stresses  fundamental  security  analysis,  which
includes  an  evaluation  of the  integrity,  as  well as the  effectiveness  of
management  personnel.  In proxy material,  we review  management  proposals and
management  recommendations relating to shareholder proposals in order to, among
other things, gain assurance that management's positions are consistent with its
integrity and the long-term  interests of the company. We generally find this to
be the case and, accordingly, give significant weight to the views of management
when we vote proxies.

     Proposals  that may have an  impact  on the  rights  or  privileges  of the
securities held by the Company would be reviewed very carefully. The explanation
for a negative impact could justify the proposal; however, if such justification
were not present, we would vote against a significant reduction in the rights or
privileges associated with any of our holdings.

     Proposals  relating  to  corporate  governance  matters  are  reviewed on a
case-by-case  basis.  When they involve  changes in the state of  incorporation,
mergers or other restructuring,  we would, if necessary,  complete our review of
the rationale for the proposal by contacting company  representatives  and, with
few  exceptions,  vote  in  favor  of  management's  recommendations.  Proposals
relating to anti-takeover provisions, such as staggered boards, poison pills and
supermajorities could be more problematic.  They would be considered in light of
our  assessment  of the  capability of current  management,  the duration of the
proposal, the negative impact it might have on the attractiveness of the company
to future "investors," among other factors. We can envision  circumstances under
which we would vote against an anti-takeover provision.

     Generally,  we would vote with management on proposals  relating to changes
to the company's capital structure, including increases and decreases of capital
and  issuances  of  preferred  stock;  however,  we would  review  the facts and
circumstances associated with each proposal before finalizing our decision.

     Well-structured stock option plans and management compensation programs are
essential for companies to attract and retain high caliber management personnel.
We generally vote in favor of proposals relating to these issues; however, there
could be an occasion on which we viewed such a proposal as over  reaching on the
part of management or having the potential for excessive  dilution when we would
vote against the proposal.

     Corporations should act in a responsible manner toward their employees, the
communities in which they are located, the customers they serve and the world at
large.  We have  observed  that most  stockholder  proposals  relating to social
issues focus on a narrow issue and the corporate position set forth in the proxy
material  provides a well-considered  response  demonstrating an appropriate and
responsible  action or position.  Accordingly,  we generally support  management
recommendations  on these types of proposals;  however,  we would  consider each
proposal on a case-by-case basis.

     We take voting proxies of securities  held in our portfolio very seriously.
As indicated above, it is an integral part of the analytical  process at General
American  Investors.  Each  proposal and any  competing  interests  are reviewed
carefully on a case-by-case basis.  Generally, we support and vote in accordance
with the  recommendations of management;  however,  the overriding basis for the
votes we cast is the best long-term interests of the Company.
 

Date:  July 9, 2003

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

Not applicable to this semi-annual report.

ITEM. 9.  PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT
          COMPANY AND AFFILIATED PURCHASERS




                                                   REGISTRANT PURCHASES OF EQUITY SECURITIES

                                                               (c) Total Number of Shares      (d) Maximum Number (or Approximate
  Period         (a) Total Number         (b) Average Price    (or Units) Purchased as Part     Dollar Value) of Shares (or Units)
                     of Shares               Paid per Share       of Publicly Announced         that May Yet Be Purchased Under
   2005         (or Units) Purchased            (or Unit)           Plans or Programs               the Plans or Programs
------------------------------------------------------------------------------------------------------------------------------------
                                                                                     
01/01-01/31            72700                  30.6667               72700                        653604

02/01-02/28            77300                  31.0622               77300                        576304

03/01-03/31           157200                  31.2879              157200                        419104

04/01-04/30           105900                  30.3646              105900                        313204

05/01-05/31            96100                  30.2055               76100                        217104

06/01-06/30           127004                  31.7654              127004                         90100
                     -------                 --------              ------                        ------
Total                 636204                                       636204
                     =======                                       ======

        Note - On July 14, 2004, the Board of Directors authorized and the registrant announced the repurchase of up to 500,000
               shares of the registrant's common stock when the shares are trading at a discount from the underlying net asset value
               of at least 8%.  As of the beginning of the period, January 1, 2005, there were 226,304 shares available for
               repurchase under such authorization.  On January 19, 2005, the Board of Directors authorized and the registrant
               announced the repurchase of up to an additional 500,000 shares of common stock, representing a continuation of a
               repurchases program which began in March 1995.  As of the end of the period, June 30, 2005, there were 90,100 shares
               available for repurchase under this program.
               



ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
 
There have been no material changes to the procedures by which shareholders may
recommend nominees to the registrant's board of directors as set forth in the
registrant's Proxy Statement, dated February 28, 2005.

ITEM 11. CONTROLS AND PROCEDURES.

Conclusions of principal officers concerning controls and procedures

(a) As of July 13, 2005, an evaluation was performed  under the  supervision and
with the  participation of the officers of General American  Investors  Company,
Inc. (the  "Registrant"),  including the principal executive officer ("PEO") and
principal  financial  officer  ("PFO"),  to  assess  the  effectiveness  of  the
Registrant's disclosure controls and procedures.  Based on that evaluation,  the
Registrant's  officers,  including the PEO and PFO,  concluded that, as of July
13, 2005, the  Registrant's  disclosure  controls and procedures were reasonably
designed so as to ensure:(1)  that  information  required to be disclosed by the
Registrant on Form N-CSR is recorded, processed,  summarized and reported within
the time periods specified by the rules and forms of the Securities and Exchange
Commission, and (2) that material information relating to the Registrant is made
known to the PEO and PFO as  appropriate to allow timely  discussions  regarding
required disclosure.

(b) There have been no significant changes in the Registrant's  internal control
over  financial  reporting  that occurred during the  Registrant's second fiscal
quarter of the period covered by this report that has materially  affected,  or
is  reasonably  likely to materially affect, the Registrant's internal control
over financial reporting.

ITEM 12. EXHIBITS

(a)(1) The code of ethics  disclosure  required by Item 2 is not  applicable  to
this semi-annual report.

(a)(2)  Certifications  of the  principal  executive  officer and the  principal
financial officer pursuant to Rule 30a-2(a)under the Investment Company Act of
1940.

(a)(3) There were no written  solicitations  to purchase  securities  under Rule
23c-1 under the Investment  Company Act of 1940 during the period covered by the
report.

(b)  Certifications  of  the  principal  executive  officer  and  the  principal
financial officer, as required by Rule 30a-2(b) under the Investment Company Act
of 1940.

 16
SIGNATURES

     Pursuant to the requirements of the Securities and 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.

General American Investors Company, Inc.

By: /s/Eugene S. Stark
    Eugene S. Stark
    Vice-President, Administration

Date: August 3, 2005

     Pursuant to the requirements of the Securities and 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/Spencer Davidson
    Spencer Davidson
    President and Chief Executive Officer
    (Principal Executive Officer)

Date: August 3, 2005

By: /s/Eugene S. Stark
    Eugene S. Stark
    Vice-President, Administration
    (Principal Financial Officer)

Date: August 3, 2005