UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 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 April 27, 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: 59 Form 13F Information Table Value Total: $1294609347 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 19757 1150000 SH SOLE 1150000 0 0 Arch Capital Group Ltd. COMMON G0450A105 22850 335000 SH SOLE 335000 0 0 Adams Express Company COMMON 006212104 1554 110806 SH SOLE 110806 0 0 American International Group,Inc COMMON 026874107 22519 335000 SH SOLE 335000 0 0 Alexander & Baldwin, Inc. COMMON 014482103 10648 211100 SH SOLE 211100 0 0 Alkermes, Inc. COMMON 01642T108 1544 100000 SH SOLE 100000 0 0 The Allstate Corporation COMMON 020002101 17117 285000 SH SOLE 285000 0 0 Ameriprise Financial, Inc. COMMON 03076C106 3428 60000 SH SOLE 60000 0 0 American Tower Corporation COMMON 029912201 3895 100000 SH SOLE 100000 0 0 Apache Corporation COMMON 037411105 58328 825000 SH SOLE 825000 0 0 Activision, Inc. COMMON 004930202 13258 700000 SH SOLE 700000 0 0 Avaya Inc. COMMON 053499109 6555 555000 SH SOLE 555000 0 0 AXIS Capital Holdings Limited COMMON G0692U109 13544 400000 SH SOLE 400000 0 0 Bank of America Corporation COMMON 060505104 13775 270000 SH SOLE 270000 0 0 BearingPoint, Inc. COMMON 074002106 9575 1250000 SH SOLE 1250000 0 0 Biogen Idec Inc. COMMON 09062X103 7545 170000 SH SOLE 170000 0 0 Berkshire Hathaway Inc. Class A COMMON 084670108 29972 275 SH SOLE 275 0 0 Cephalon, Inc. COMMON 156708109 3561 50000 SH SOLE 50000 0 0 Central Securities Corporation COMMON 155123102 758 28226 SH SOLE 28226 0 0 Costco Wholesale Corporation COMMON 22160K105 37688 700000 SH SOLE 700000 0 0 Cisco Systems, Inc. COMMON 17275R102 22977 900000 SH SOLE 900000 0 0 CEMEX, S.A. de C.V. ADR COMMON 151290889 72897 2225862 SH SOLE 2225862 0 0 Cytokinetics, Incorporated COMMON 23282W100 4210 604900 SH SOLE 604900 0 0 Dell Inc. COMMON 24702R101 24394 1051000 SH SOLE 1051000 0 0 Diageo plc ADR COMMON 25243Q205 28333 350000 SH SOLE 350000 0 0 Dollar General Corporation COMMON 256669102 41771 1975000 SH SOLE 1975000 0 0 Genentech, Inc. COMMON 368710406 16424 200000 SH SOLE 200000 0 0 Halliburton Company COMMON 406216101 26979 850000 SH SOLE 850000 0 0 The Home Depot, Inc. COMMON 437076102 57682 1570000 SH SOLE 1570000 0 0 Intermec, Inc. COMMON 458786100 2904 130000 SH SOLE 130000 0 0 Lamar Advertising Company COMMON 512815101 20409 324100 SH SOLE 324100 0 0 Medtronic, Inc. COMMON 585055106 11774 240000 SH SOLE 240000 0 0 MedImmune, Inc. COMMON 584699102 12918 355000 SH SOLE 355000 0 0 MetLife, Inc. COMMON 59156R108 17366 275000 SH SOLE 275000 0 0 MFA Mortgage Investments, Inc. COMMON 55272X102 7123 925000 SH SOLE 925000 0 0 Microsoft Corporation COMMON 594918104 20066 720000 SH SOLE 720000 0 0 M&T Bank Corporation COMMON 55261F104 34749 300000 SH SOLE 300000 0 0 Nelnet, Inc. COMMON 64031N108 10787 450000 SH SOLE 450000 0 0 NetEase.com, Inc. COMMON 64110W102 3814 215000 SH SOLE 215000 0 0 PepsiCo, Inc. COMMON 713448108 14937 235000 SH SOLE 235000 0 0 Pfizer Inc COMMON 717081103 13337 528000 SH SOLE 528000 0 0 PartnerRe Ltd. COMMON G6852T105 21590 315000 SH SOLE 315000 0 0 Patterson-UTI Energy, Inc. COMMON 703481101 22440 1000000 SH SOLE 1000000 0 0 QUALCOMM Incorporated COMMON 747525103 29862 700000 SH SOLE 700000 0 0 Everest Re Group, Ltd. COMMON G3223R108 45200 470000 SH SOLE 470000 0 0 Republic Services, Inc. COMMON 760759100 49033 1762500 SH SOLE 1762500 0 0 Rio Tinto plc ADR COMMON 767204100 14808 65000 SH SOLE 65000 0 0 Royce Value Trust COMMON 780910105 2468 111930 SH SOLE 111930 0 0 Sprint Nextel Corporation COMMON 852061100 22468 1185000 SH SOLE 1185000 0 0 SunTrust Banks, Inc. COMMON 867914103 13286 160000 SH SOLE 160000 0 0 THQ Inc. COMMON 872443403 10770 315000 SH SOLE 315000 0 0 The TJX Companies, Inc. COMMON 872540109 56616 2100000 SH SOLE 2100000 0 0 Talisman Energy Inc. COMMON 87425E103 52680 3000000 SH SOLE 3000000 0 0 Transatlantic Holdings, Inc. COMMON 893521104 13350 205000 SH SOLE 205000 0 0 Textron Inc. COMMON 883203101 22450 250000 SH SOLE 250000 0 0 Wachovia Corporation COMMON 929903102 33848 614864 SH SOLE 614864 0 0 Weatherford International Ltd. COMMON G95089101 55022 1220000 SH SOLE 1220000 0 0 Wal-Mart Stores, Inc. COMMON 931142103 26996 575000 SH SOLE 575000 0 0 Xerox Corporation COMMON 984121103 38003 2250000 SH SOLE 2250000 0 0