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

                                   FORM 13F

                             FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: September 30, 2010

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 AVE 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   October 20, 2010

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:  59

Form 13F Information Table Value Total:  $944769650

List of Other Included Managers:

No.   13F File Number    Name




                                                             VALUE    SHARES/ SH/ PUT/ INVSTMT   OTHER    -----VOTING AUTHORITY-----
  NAME OF ISSUER                  TITLE OF CLASS    CUSIP   (x$1000)  PRN AMT PRN CALL DSCRETN  MANAGERS      SOLE   SHARED     NONE
-------------------------------  ---------------- ---------  ------  -------- --- ---- ------- ---------- --------   -------   -----
                                                                                               
Apple Inc.                       COMMON           037833100    17025    60000 SH       SOLE                  60000        0        0
ABB Ltd. ADR                     COMMON           000375204    25344  1200000 SH       SOLE                1200000        0        0
Arch Capital Group Ltd.          COMMON           G0450A105    26397   315000 SH       SOLE                 315000        0        0
Adams Express Company            COMMON           006212104     1280   128815 SH       SOLE                 128815        0        0
Alexander & Baldwin, Inc.        COMMON           014482103     8226   236100 SH       SOLE                 236100        0        0
Amgen Inc.                       COMMON           031162100     2204    40000 SH       SOLE                  40000        0        0
Alpha Natural Resources, Inc.    COMMON           02076X102    10872   264200 SH       SOLE                 264200        0        0
Apache Corporation               COMMON           037411105    28984   296478 SH       SOLE                 296478        0        0
ASML Holding N.V.                COMMON           N07059186    20811   700000 SH       SOLE                 700000        0        0
American Express Company         COMMON           025816109    13660   325000 SH       SOLE                 325000        0        0
Berkshire Hathaway Inc. Class A  COMMON           084670108    13695      110 SH       SOLE                    110        0        0
Celgene Corporation              COMMON           151020104     5761   100000 SH       SOLE                 100000        0        0
Cephalon, Inc.                   COMMON           156708109    23858   382100 SH       SOLE                 382100        0        0
Central Securities Corporation   COMMON           155123102      706    35500 SH       SOLE                  35500        0        0
Canadian Natural Resources       COMMON           136385101     8650   250000 SH       SOLE                 250000        0        0
Costco Wholesale Corporation     COMMON           22160K105    37082   575000 SH       SOLE                 575000        0        0
Cisco Systems, Inc.              COMMON           17275R102    21024   960000 SH       SOLE                 960000        0        0
CEMEX, S.A. de C.V. ADR          COMMON           151290889    16548  1946880 SH       SOLE                1946880        0        0
Cytokinetics, Incorporated       COMMON           23282W100     1399   529900 SH       SOLE                 529900        0        0
Dell Inc.                        COMMON           24702R101    16731  1290000 SH       SOLE                1290000        0        0
Diageo plc ADR                   COMMON           25243Q205    24154   350000 SH       SOLE                 350000        0        0
Devon Energy Corporation         COMMON           25179M103     8420   130062 SH       SOLE                 130062        0        0
Epoch Holding Corporation        COMMON           29428R103    21467  1666667 SH       SOLE                1666667        0        0
Fidelity National Financial, Inc COMMON           31620R105    10997   700000 SH       SOLE                 700000        0        0
Gilead Sciences, Inc.            COMMON           375558103    20102   564500 SH       SOLE                 564500        0        0
Halliburton Company              COMMON           406216101    26456   800000 SH       SOLE                 800000        0        0
Hewitt Associates, Inc.Class A   COMMON           42822Q100    23505   466100 SH       SOLE                 466100        0        0
International Game Technology    COMMON           459902102    10838   750000 SH       SOLE                 750000        0        0
J.C. Penney Company, Inc.        COMMON           708160106    10872   400000 SH       SOLE                 400000        0        0
JPMorgan Chase & Co.             COMMON           46625H100    16176   425000 SH       SOLE                 425000        0        0
JPMorgan Chase & Co.             COMMON           46634E114     2042   175000 SH       SOLE                 175000        0        0
Leap Wireless International, Inc COMMON           521863308      963    78000 SH       SOLE                  78000        0        0
MetLife, Inc.                    COMMON           59156R108    10766   280000 SH       SOLE                 280000        0        0
MSCI Inc. Class A                COMMON           55354G100     9963   300000 SH       SOLE                 300000        0        0
Microsoft Corporation            COMMON           594918104    13959   570000 SH       SOLE                 570000        0        0
M&T Bank Corporation             COMMON           55261F104     8999   110000 SH       SOLE                 110000        0        0
The Manitowoc Company, Inc.      COMMON           563571108    12110  1000000 SH       SOLE                1000000        0        0
Nelnet, Inc.                     COMMON           64031N108    13808   603500 SH       SOLE                 603500        0        0
NetEase.com, Inc.                COMMON           64110W102     6630   168100 SH       SOLE                 168100        0        0
Nucor Corporation                COMMON           670346105     5730   150000 SH       SOLE                 150000        0        0
Poniard Pharmaceuticals, Inc.    COMMON           732449301      113   195344 SH       SOLE                 195344        0        0
PepsiCo, Inc.                    COMMON           713448108    19932   300000 SH       SOLE                 300000        0        0
Pfizer Inc.                      COMMON           717081103    12977   755808 SH       SOLE                 755808        0        0
PartnerRe Ltd.                   COMMON           G6852T105    21248   265000 SH       SOLE                 265000        0        0
QUALCOMM Incorporated            COMMON           747525103    31593   700000 SH       SOLE                 700000        0        0
Everest Re Group, Ltd.           COMMON           G3223R108    21618   250000 SH       SOLE                 250000        0        0
Republic Services, Inc.          COMMON           760759100    28935   949000 SH       SOLE                 949000        0        0
Royce Value Trust, Inc.          COMMON           780910105     1760   144955 SH       SOLE                 144955        0        0
Symetra Financial Corporation    COMMON           87151Q106     2092   200000 SH       SOLE                 200000        0        0
Teradata Corporation             COMMON           88076W103    17352   450000 SH       SOLE                 450000        0        0
The TJX Companies, Inc.          COMMON           872540109    72854  1632400 SH       SOLE                1632400        0        0
Transatlantic Holdings, Inc.     COMMON           893521104     4218    83000 SH       SOLE                  83000        0        0
The Travelers Companies, Inc.    COMMON           89417E109    10420   200000 SH       SOLE                 200000        0        0
United Technologies Corporation  COMMON           913017109    23150   325000 SH       SOLE                 325000        0        0
Verifone Holdings, Inc. 1 3/8%   NOTE             92342YAB5     9912 10000000 PAR      SOLE               10000000        0        0
Weatherford International Ltd.   COMMON           G95089101    36765  2150000 SH       SOLE                2150000        0        0
Waste Management, Inc.           COMMON           94106L109    22516   630000 SH       SOLE                 630000        0        0
Wal-Mart Stores, Inc.            COMMON           931142103    29436   550000 SH       SOLE                 550000        0        0
Xerox Corporation                COMMON           984121103    19665  1900000 SH       SOLE                1900000        0        0