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, 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 April 28, 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: 58 Form 13F Information Table Value Total: $1168706882 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 26920 1000000 SH SOLE 1000000 0 0 Arch Capital Group Ltd. COMMON G0450A105 22318 325000 SH SOLE 325000 0 0 Adams Express Company COMMON 006212104 1474 117798 SH SOLE 117798 0 0 American International Group,Inc COMMON 026874107 19463 450000 SH SOLE 450000 0 0 Alexander & Baldwin, Inc. COMMON 014482103 10171 236100 SH SOLE 236100 0 0 Alkermes, Inc. COMMON 01642T108 950 80000 SH SOLE 80000 0 0 The Allstate Corporation COMMON 020002101 15860 330000 SH SOLE 330000 0 0 Apache Corporation COMMON 037411105 72492 600000 SH SOLE 600000 0 0 Activision, Inc. COMMON 004930202 19117 700000 SH SOLE 700000 0 0 American Express Company COMMON 025816109 17488 400000 SH SOLE 400000 0 0 AXIS Capital Holdings Limited COMMON G0692U109 6966 205000 SH SOLE 205000 0 0 BearingPoint, Inc. COMMON 074002106 1680 1000000 SH SOLE 1000000 0 0 Biogen Idec Inc. COMMON 09062X103 5552 90000 SH SOLE 90000 0 0 Berkshire Hathaway Inc. Class A COMMON 084670108 26680 200 SH SOLE 200 0 0 Central Securities Corporation COMMON 155123102 752 30578 SH SOLE 30578 0 0 Cougar Biotechnology, Inc. COMMON 222083107 1477 70500 SH SOLE 70500 0 0 Costco Wholesale Corporation COMMON 22160K105 37358 575000 SH SOLE 575000 0 0 Carpenter Technology Corporation COMMON 144285103 17966 321000 SH SOLE 321000 0 0 Cisco Systems, Inc. COMMON 17275R102 21681 900000 SH SOLE 900000 0 0 CEMEX, S.A. de C.V. ADR COMMON 151290889 58140 2225862 SH SOLE 2225862 0 0 Cytokinetics, Incorporated COMMON 23282W100 1759 529900 SH SOLE 529900 0 0 Dell Inc. COMMON 24702R101 29880 1500000 SH SOLE 1500000 0 0 Diageo plc ADR COMMON 25243Q205 28462 350000 SH SOLE 350000 0 0 Genentech, Inc. COMMON 368710406 16236 200000 SH SOLE 200000 0 0 Fidelity National Information COMMON 31620M106 5912 155000 SH SOLE 155000 0 0 Fidelity National Financial, Inc COMMON 31620R105 25204 1375000 SH SOLE 1375000 0 0 Gilead Sciences, Inc. COMMON 375558103 6158 119500 SH SOLE 119500 0 0 Halliburton Company COMMON 406216101 31464 800000 SH SOLE 800000 0 0 The Home Depot, Inc. COMMON 437076102 30767 1100000 SH SOLE 1100000 0 0 Hewitt Associates, Inc.Class A COMMON 42822Q100 21874 550000 SH SOLE 550000 0 0 Lamar Advertising Company COMMON 512815101 11645 324100 SH SOLE 324100 0 0 Leap Wireless International, Inc COMMON 521863308 7107 152500 SH SOLE 152500 0 0 MetLife, Inc. COMMON 59156R108 15969 265000 SH SOLE 265000 0 0 Microsoft Corporation COMMON 594918104 16177 570000 SH SOLE 570000 0 0 M&T Bank Corporation COMMON 55261F104 24144 300000 SH SOLE 300000 0 0 Nelnet, Inc. COMMON 64031N108 13513 1150000 SH SOLE 1150000 0 0 NetEase.com, Inc. COMMON 64110W102 4706 245000 SH SOLE 245000 0 0 MetroPCS Communications Inc. COMMON 591708102 14510 853500 SH SOLE 853500 0 0 PepsiCo, Inc. COMMON 713448108 14440 200000 SH SOLE 200000 0 0 PartnerRe Ltd. COMMON G6852T105 20983 275000 SH SOLE 275000 0 0 Patterson-UTI Energy, Inc. COMMON 703481101 18326 700000 SH SOLE 700000 0 0 QUALCOMM Incorporated COMMON 747525103 32800 800000 SH SOLE 800000 0 0 Everest Re Group, Ltd. COMMON G3223R108 28202 315000 SH SOLE 315000 0 0 Republic Services, Inc. COMMON 760759100 25775 881500 SH SOLE 881500 0 0 Royce Value Trust COMMON 780910105 1942 123861 SH SOLE 123861 0 0 Sprint Nextel Corporation COMMON 852061100 3211 480000 SH SOLE 480000 0 0 Teradata Corporation COMMON 88076W103 6397 290000 SH SOLE 290000 0 0 Target Corporation COMMON 87612E106 16882 333100 SH SOLE 333100 0 0 THQ Inc. COMMON 872443403 7957 365000 SH SOLE 365000 0 0 The TJX Companies, Inc. COMMON 872540109 55392 1675000 SH SOLE 1675000 0 0 Transatlantic Holdings, Inc. COMMON 893521104 8626 130000 SH SOLE 130000 0 0 Textron Inc. COMMON 883203101 33291 600700 SH SOLE 600700 0 0 United Technologies Corporation COMMON 913017109 22367 325000 SH SOLE 325000 0 0 Wachovia Corporation COMMON 929903102 16605 615000 SH SOLE 615000 0 0 Weatherford International Ltd. COMMON G95089101 89500 1235000 SH SOLE 1235000 0 0 Waste Management, Inc. COMMON 94106L109 22821 680000 SH SOLE 680000 0 0 Wal-Mart Stores, Inc. COMMON 931142103 24760 470000 SH SOLE 470000 0 0 Xerox Corporation COMMON 984121103 28443 1900000 SH SOLE 1900000 0 0