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, 2007

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: 450 Lexington Ave, Suite 3300
         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 06, 2007


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:  $1390934616



List of Other Included Managers:

No.   13F File Number    Name






   COLUMN 1                           COLUMN 2     COLUMN 3   COLUMN 4      COLUMN 5    COLUMN 6  COLUMN 7            COLUMN 8
---------------                      ----------   ---------- ---------     ----------   --------- -------           -----------
                                                             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
                                                                                                      
ABB Ltd. ADR                     COMMON           000375204    25990  1150000 SH       SOLE                1150000        0        0
Arch Capital Group Ltd.          COMMON           G0450A105    24301   335000 SH       SOLE                 335000        0        0
Adams Express Company            COMMON           006212104     1650   110806 SH       SOLE                 110806        0        0
American International Group,Inc COMMON           026874107    23460   335000 SH       SOLE                 335000        0        0
Alexander & Baldwin, Inc.        COMMON           014482103    11212   211100 SH       SOLE                 211100        0        0
Alkermes, Inc.                   COMMON           01642T108     1460   100000 SH       SOLE                 100000        0        0
The Allstate Corporation         COMMON           020002101    16915   275000 SH       SOLE                 275000        0        0
Ameriprise Financial, Inc.       COMMON           03076C106     3814    60000 SH       SOLE                  60000        0        0
Apache Corporation               COMMON           037411105    48954   600000 SH       SOLE                 600000        0        0
Activision, Inc.                 COMMON           004930202    13069   700000 SH       SOLE                 700000        0        0
Avaya Inc.                       COMMON           053499109     5827   346000 SH       SOLE                 346000        0        0
AXIS Capital Holdings Limited    COMMON           G0692U109    14837   365000 SH       SOLE                 365000        0        0
Bank of America Corporation      COMMON           060505104    17112   350000 SH       SOLE                 350000        0        0
BearingPoint, Inc.               COMMON           074002106    13524  1850000 SH       SOLE                1850000        0        0
Biogen Idec Inc.                 COMMON           09062X103     9095   170000 SH       SOLE                 170000        0        0
Berkshire Hathaway Inc. Class A  COMMON           084670108    30106      275 SH       SOLE                    275        0        0
Central Securities Corporation   COMMON           155123102      820    28226 SH       SOLE                  28226        0        0
Costco Wholesale Corporation     COMMON           22160K105    36868   630000 SH       SOLE                 630000        0        0
Carpenter Technology Corporation COMMON           144285103    19038   146100 SH       SOLE                 146100        0        0
Cisco Systems, Inc.              COMMON           17275R102    25065   900000 SH       SOLE                 900000        0        0
CEMEX, S.A. de C.V. ADR          COMMON           151290889    84150  2280483 SH       SOLE                2280483        0        0
Cytokinetics, Incorporated       COMMON           23282W100     3418   604900 SH       SOLE                 604900        0        0
Dell Inc.                        COMMON           24702R101    38828  1360000 SH       SOLE                1360000        0        0
Diageo plc ADR                   COMMON           25243Q205    29159   350000 SH       SOLE                 350000        0        0
Dollar General Corporation       COMMON           256669102    12955   591000 SH       SOLE                 591000        0        0
Dow Jones & Company, Inc.        COMMON           260561105    30161   525000 SH       SOLE                 525000        0        0
Genentech, Inc.                  COMMON           368710406    15132   200000 SH       SOLE                 200000        0        0
Halliburton Company              COMMON           406216101    29325   850000 SH       SOLE                 850000        0        0
The Home Depot, Inc.             COMMON           437076102    54224  1378000 SH       SOLE                1378000        0        0
Hewitt Associates, Inc.Class A   COMMON           42822Q100    16000   500000 SH       SOLE                 500000        0        0
Intermec, Inc.                   COMMON           458786100     3290   130000 SH       SOLE                 130000        0        0
Lamar Advertising Company        COMMON           512815101    20341   324100 SH       SOLE                 324100        0        0
Medtronic, Inc.                  COMMON           585055106     8816   170000 SH       SOLE                 170000        0        0
MetLife, Inc.                    COMMON           59156R108    17087   265000 SH       SOLE                 265000        0        0
MFA Mortgage Investments, Inc.   COMMON           55272X102     6649   913300 SH       SOLE                 913300        0        0
Microsoft Corporation            COMMON           594918104    12377   420000 SH       SOLE                 420000        0        0
M&T Bank Corporation             COMMON           55261F104    33674   315000 SH       SOLE                 315000        0        0
Nelnet, Inc.                     COMMON           64031N108    14664   600000 SH       SOLE                 600000        0        0
NetEase.com, Inc.                COMMON           64110W102     4170   245000 SH       SOLE                 245000        0        0
MetroPCS Communications Inc.     COMMON           591708102     1156    35000 SH       SOLE                  35000        0        0
PepsiCo, Inc.                    COMMON           713448108    15240   235000 SH       SOLE                 235000        0        0
PartnerRe Ltd.                   COMMON           G6852T105    24025   310000 SH       SOLE                 310000        0        0
Patterson-UTI Energy, Inc.       COMMON           703481101    26210  1000000 SH       SOLE                1000000        0        0
QUALCOMM Incorporated            COMMON           747525103    34712   800000 SH       SOLE                 800000        0        0
Everest Re Group, Ltd.           COMMON           G3223R108    42370   390000 SH       SOLE                 390000        0        0
Republic Services, Inc.          COMMON           760759100    27009   881500 SH       SOLE                 881500        0        0
Royce Value Trust                COMMON           780910105     2448   114272 SH       SOLE                 114272        0        0
Sprint Nextel Corporation        COMMON           852061100    25370  1225000 SH       SOLE                1225000        0        0
Target Corporation               COMMON           87612E106    30719   483000 SH       SOLE                 483000        0        0
THQ Inc.                         COMMON           872443403     9614   315000 SH       SOLE                 315000        0        0
The TJX Companies, Inc.          COMMON           872540109    57750  2100000 SH       SOLE                2100000        0        0
Talisman Energy Inc.             COMMON           87425E103    57990  3000000 SH       SOLE                3000000        0        0
Transatlantic Holdings, Inc.     COMMON           893521104    12448   175000 SH       SOLE                 175000        0        0
Textron Inc.                     COMMON           883203101    28067   254900 SH       SOLE                 254900        0        0
United Technologies Corporation  COMMON           913017109    23052   325000 SH       SOLE                 325000        0        0
Wachovia Corporation             COMMON           929903102    32031   625000 SH       SOLE                 625000        0        0
Weatherford International Ltd.   COMMON           G95089101    67393  1220000 SH       SOLE                1220000        0        0
Waste Management, Inc.           COMMON           94106L109    26554   680000 SH       SOLE                 680000        0        0
Wal-Mart Stores, Inc.            COMMON           931142103    27663   575000 SH       SOLE                 575000        0        0
Xerox Corporation                COMMON           984121103    41580  2250000 SH       SOLE                2250000        0        0