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

                                   FORM 13F

                             FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: June 30, 2008

Check here if Amendment [ ]; Amendment Number:
This Amendment (Check only one.): [ ] is a restatement.
                                  [ ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:GENERAL AMERICAN INVESTORS COMPANY, INC.
Address: 100 Park Avenue 35th Floor
         New York, NY 10017

13F File Number: 28-461

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.


Person Signing this Report on Behalf of Reporting Manager:

Name: Eugene S. Stark
Title: Vice-President, Administration
Phone: 212-916-8447
Signature, Place, and Date of Signing:

  Eugene S. Stark   New York, NY   August 04, 2008


Report Type (Check only one.):

[X]    13F HOLDINGS REPORT.

[ ]    13F NOTICE.

[ ]    13F COMBINATION REPORT.


List of Other Managers Reporting for this Manager:

        Form 13F File Number                Name


I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934.


FORM 13F SUMMARY PAGE


Report Summary:

Number of Other Included Managers:       0

Form 13F Information Table Entry Total:  60

Form 13F Information Table Value Total:  $1218983742



List of Other Included Managers:

No.   13F File Number    Name





                                                                               
                                                             VALUE    SHARES/ SH/ PUT/ INVSTMT            -----VOTING AUTHORITY-----
  NAME OF ISSUER                 -TITLE OF CLASS- --CUSIP-- x$1000    PRN AMT PRN CALL DSCRETN -MANAGERS-     SOLE   SHARED     NONE
ABB Ltd. ADR                     COMMON           000375204    28320  1000000 SH       SOLE                1000000        0        0
Arch Capital Group Ltd.          COMMON           G0450A105    21554   325000 SH       SOLE                 325000        0        0
Adams Express Company            COMMON           006212104     1396   117798 SH       SOLE                 117798        0        0
American International Group,Inc COMMON           026874107     8600   325000 SH       SOLE                 325000        0        0
Alexander & Baldwin, Inc.        COMMON           014482103    10754   236100 SH       SOLE                 236100        0        0
The Allstate Corporation         COMMON           020002101    14817   325000 SH       SOLE                 325000        0        0
Apache Corporation               COMMON           037411105    76422   549800 SH       SOLE                 549800        0        0
Activision Blizzard, Inc.        COMMON           004930202    23849   700000 SH       SOLE                 700000        0        0
American Express Company         COMMON           025816109    16952   450000 SH       SOLE                 450000        0        0
AXIS Capital Holdings Limited    COMMON           G0692U109     5515   185000 SH       SOLE                 185000        0        0
The Boeing Company               COMMON           097023105    19716   300000 SH       SOLE                 300000        0        0
Biogen Idec Inc.                 COMMON           09062X103     3912    70000 SH       SOLE                  70000        0        0
Berkshire Hathaway Inc. Class A  COMMON           084670108    24150      200 SH       SOLE                    200        0        0
Central Securities Corporation   COMMON           155123102      789    30578 SH       SOLE                  30578        0        0
Cougar Biotechnology, Inc.       COMMON           222083107     1680    70500 SH       SOLE                  70500        0        0
Cleveland-Cliffs Inc             COMMON           185896107    14303   120000 SH       SOLE                 120000        0        0
Costco Wholesale Corporation     COMMON           22160K105    40331   575000 SH       SOLE                 575000        0        0
Carpenter Technology Corporation COMMON           144285103    16194   371000 SH       SOLE                 371000        0        0
Cisco Systems, Inc.              COMMON           17275R102    21283   915000 SH       SOLE                 915000        0        0
CEMEX, S.A. de C.V. ADR          COMMON           151290889    56973  2306590 SH       SOLE                2306590        0        0
Cytokinetics, Incorporated       COMMON           23282W100     1966   529900 SH       SOLE                 529900        0        0
Dell Inc.                        COMMON           24702R101    34023  1555000 SH       SOLE                1555000        0        0
Diageo plc ADR                   COMMON           25243Q205    25855   350000 SH       SOLE                 350000        0        0
Genentech, Inc.                  COMMON           368710406    15180   200000 SH       SOLE                 200000        0        0
Fidelity National Information    COMMON           31620M106     1846    50000 SH       SOLE                  50000        0        0
Fidelity National Financial, Inc COMMON           31620R105    16065  1275000 SH       SOLE                1275000        0        0
Gilead Sciences, Inc.            COMMON           375558103     6328   119500 SH       SOLE                 119500        0        0
Halliburton Company              COMMON           406216101    42456   800000 SH       SOLE                 800000        0        0
The Home Depot, Inc.             COMMON           437076102    16980   725000 SH       SOLE                 725000        0        0
Hewitt Associates, Inc.Class A   COMMON           42822Q100    17866   466100 SH       SOLE                 466100        0        0
Hatteras Financial Corporation   COMMON           41902R103      646    28100 SH       SOLE                  28100        0        0
Lamar Advertising Company        COMMON           512815101    11677   324100 SH       SOLE                 324100        0        0
Leap Wireless International, Inc COMMON           521863308     6583   152500 SH       SOLE                 152500        0        0
MetLife, Inc.                    COMMON           59156R108    13984   265000 SH       SOLE                 265000        0        0
Microsoft Corporation            COMMON           594918104    15681   570000 SH       SOLE                 570000        0        0
M&T Bank Corporation             COMMON           55261F104    21162   300000 SH       SOLE                 300000        0        0
Nelnet, Inc.                     COMMON           64031N108    11511  1025000 SH       SOLE                1025000        0        0
NetEase.com, Inc.                COMMON           64110W102     8934   410000 SH       SOLE                 410000        0        0
VeriFone Holdings, Inc.          COMMON           92342Y109    11950  1000000 SH       SOLE                1000000        0        0
MetroPCS Communications, Inc.    COMMON           591708102    18392  1038500 SH       SOLE                1038500        0        0
PepsiCo, Inc.                    COMMON           713448108    15262   240000 SH       SOLE                 240000        0        0
PartnerRe Ltd.                   COMMON           G6852T105    19011   275000 SH       SOLE                 275000        0        0
Patterson-UTI Energy, Inc.       COMMON           703481101    21678   600000 SH       SOLE                 600000        0        0
QUALCOMM Incorporated            COMMON           747525103    35496   800000 SH       SOLE                 800000        0        0
Everest Re Group, Ltd.           COMMON           G3223R108    25109   315000 SH       SOLE                 315000        0        0
Republic Services, Inc.          COMMON           760759100    26181   881500 SH       SOLE                 881500        0        0
Royce Value Trust                COMMON           780910105     1994   127159 SH       SOLE                 127159        0        0
Sovereign Bancorp, Inc.          COMMON           845905108     9752  1325000 SH       SOLE                1325000        0        0
Teradata Corporation             COMMON           88076W103    20595   890000 SH       SOLE                 890000        0        0
Target Corporation               COMMON           87612E106    15486   333100 SH       SOLE                 333100        0        0
THQ Inc.                         COMMON           872443403     6787   335000 SH       SOLE                 335000        0        0
The TJX Companies, Inc.          COMMON           872540109    52712  1675000 SH       SOLE                1675000        0        0
Transatlantic Holdings, Inc.     COMMON           893521104     5647   100000 SH       SOLE                 100000        0        0
Textron Inc.                     COMMON           883203101    28792   600700 SH       SOLE                 600700        0        0
United Technologies Corporation  COMMON           913017109    20053   325000 SH       SOLE                 325000        0        0
Wachovia Corporation             COMMON           929903102     7532   485000 SH       SOLE                 485000        0        0
Weatherford International Ltd.   COMMON           G95089101   122487  2470000 SH       SOLE                2470000        0        0
Waste Management, Inc.           COMMON           94106L109    25643   680000 SH       SOLE                 680000        0        0
Wal-Mart Stores, Inc.            COMMON           931142103    26414   470000 SH       SOLE                 470000        0        0
Xerox Corporation                COMMON           984121103    25764  1900000 SH       SOLE                1900000        0        0