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

                                    FORM 13F

                              FORM 13F COVER PAGE


                  Report for the Quarter Ended December 31, 2003



                          AMERICAN FINANCIAL GROUP, INC.
                 One East Fourth Street, Cincinnati, Ohio 45202
     -------------------------------------------------------------------------
     (Name and Address of Institutional Investment Manager Filing this Report)


                         Form 13F File Number:  28-4389


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.

                                 Fred J. Runk
                     Senior Vice President and Treasurer
                                (513) 579-2489
                -----------------------------------------------
                (Name, Title and Phone Number of Person Signing
                 this Report on Behalf of Reporting Manager)



Signature:

Fred J. Runk                            Cincinnati, Ohio      February 12, 2004
- ----------------------------------
Fred J. Runk
Senior Vice President and Treasurer


Report Type:
     [X]  13F HOLDINGS REPORT.
     [ ]  13F NOTICE.
     [ ]  13F COMBINATION REPORT.








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FORM 13F SUMMARY PAGE --------------------- Number of Other Included Managers: 1 ----------- Form 13F Information Table Entry Total: 79 ----------- Form 13F Information Table Value Total (thousands): $ 970,553 ----------- Name and 13F file numbers of all Institutional Investment Managers with respect to which this schedule is filed (other than American Financial Group, Inc.): Number 13F File Number Name of Subsidiary ------ --------------- ------------------------------------ 1. 28-498 Great American Insurance Company Page 2

FORM 13F INFORMATION TABLE Column 4: Column 5: Column 8: Column 2: Market Shares or Column 6: Column 7: Voting Authority Column 1: Title of Column 3: Value Principal Investment Other --------------------------- Name of Issuer Class CUSIP (000's) Amount Discretion Managers Sole Shared None -------------- ---------------- ----------- --------- ------------ ---------- -------- ---------- ------ --------- HOLDINGS OF GREAT AMERICAN INSURANCE COMPANY - -------------------------------------------- AMERICAN ELEC PWR INC COM 025537 10 1 4,058 133,000SH Defined 1 133,000 BANK OF AMERICA CORPORATION COM 060505 10 4 9,587 119,200SH Defined " 119,200 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 643 27,500SH Defined " 27,500 COMCAST CORP NEW CL A 20030N 10 1 661 20,153SH Defined " 20,153 COMCAST CORP NEW CL A SPL 20030N 20 0 1,526 48,760SH Defined " 48,760 CONAGRA FOODS INC COM 205887 10 2 2,161 81,900SH Defined " 81,900 DPL INC COM 233293 10 9 8,615 412,600SH Defined " 412,600 DOMINION RES INC VA NEW COM 25746U 10 9 4,021 63,000SH Defined " 63,000 ENERGY EAST CORP COM 29266M 10 9 1,799 80,300SH Defined " 80,300 FIRSTENERGY CORP COM 337932 10 7 1,936 55,000SH Defined " 55,000 FLEETBOSTON FINL CORP COM 339030 10 8 2,837 65,000SH Defined " 65,000 GREAT AMERN FINL RES INC COM 389915 10 9 625,540 38,565,995SH Defined " 38,565,995 KEYCORP NEW COM 493267 10 8 258 8,800SH Defined " 8,800 KROGER CO COM 501044 10 1 139 7,500SH Defined " 7,500 LEUCADIA NATL CORP COM 527288 10 4 2,727 59,161SH Defined " 59,161 MARSH SUPERMARKETS INC CL B 571783 20 8 6,509 602,644SH Defined " 602,644 MARSH SUPERMARKETS INC CL A 571783 30 7 7,702 709,844SH Defined " 709,844 MERCK & CO INC COM 589331 10 7 924 20,000SH Defined " 20,000 NATIONAL CITY CORP COM 635405 10 3 6,449 190,000SH Defined " 190,000 NISOURCE INC COM 65473P 10 5 3,401 155,000SH Defined " 155,000 PNC FINL SVCS GROUP INC COM 693475 10 5 3,503 64,000SH Defined " 64,000 PEPCO HOLDINGS INC COM 713291 10 2 1,768 90,500SH Defined " 90,500 PFIZER INC COM 717081 10 3 2,120 60,000SH Defined " 60,000 PROGRESS ENERGY INC COM 743263 10 5 7,694 170,000SH Defined " 170,000 PROVIDENT FINL GROUP INC COM 743866 10 5 179,871 5,629,771SH Defined " 5,629,771 QWEST COMMUNICATIONS INTL INC COM 749121 10 9 77 17,902SH Defined " 17,902 RCN CORP COM 749361 10 1 14 21,000SH Defined " 21,000 SBC COMMUNICATIONS INC COM 78387G 10 3 1,564 60,000SH Defined " 60,000 SAFEWAY INC COM NEW 786514 20 8 1,120 51,100SH Defined " 51,100 SARA LEE CORP COM 803111 10 3 1,086 50,000SH Defined " 50,000 SEABULK INTL INC COM 81169P 10 1 592 72,499SH Defined " 72,499 SEPRACOR INC COM 817315 10 4 2,470 103,200SH Defined " 103,200 TENET HEALTHCARE CORP COM 88033G 10 0 1,445 90,000SH Defined " 90,000 TIME WARNER INC COM 887317 10 5 470 26,149SH Defined " 26,149 TYCO INTL LTD NEW COM 902124 10 6 3,048 115,000SH Defined " 115,000 UNITED AUTO GROUP INC COM 909440 10 9 711 22,700SH Defined " 22,700 WALTER INDS INC COM 93317Q 10 5 1,583 118,600SH Defined " 118,600 WASHINGTON MUT INC COM 939322 10 3 2,413 60,134SH Defined " 60,134

HOLDINGS OF OTHER ENTITIES EACH HAVING LESS THAN $100 MILLION IN 13F SECURITIES - ------------------------------- BANK OF AMERICA CORPORATION COM 060505 10 4 2 24SH Sole 24 BANK OF AMERICA CORPORATION COM 060505 10 4 1,609 20,000SH Defined 1 20,000 BRISTOL MYERS SQUIBB CO COM 110122 10 8 286 10,000SH Defined " 10,000 BRISTOL MYERS SQUIBB CO COM 110122 10 8 286 10,000SH Other 10,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 2,557 109,300SH Defined 1 109,300 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 70 2,977SH Other 2,977 COMCAST CORP NEW CL A 20030N 10 1 485 14,800SH Other 14,800 CONAGRA FOODS INC COM 205887 10 2 3,167 120,000SH Defined 1 120,000 DPL INC COM 233293 10 9 1,879 90,000SH Defined " 90,000 DPL INC COM 233293 10 9 209 10,000SH Other 10,000 DOMINION RES INC VA NEW COM 25746U 10 9 1,596 25,000SH Defined 1 25,000 ENERGY EAST CORP COM 29266M 10 9 1,792 80,000SH Defined " 80,000 FIRSTENERGY CORP COM 337932 10 7 2,112 60,000SH Defined " 60,000 JOHN HANCOCK BK &THRIFT OPP SH BEN INT 409735 10 7 694 67,200SH Other 67,200 HOST MARRIOTT CORP NEW COM 44107P 10 4 125 10,110SH Other 10,110 KROGER CO COM 501044 10 1 46 2,500SH Defined 1 2,500 LEUCADIA NATL CORP COM 527288 10 4 1,215 26,352SH Sole 26,352 LEUCADIA NATL CORP COM 527288 10 4 228 4,935SH Defined 1 4,935 MERCK & CO INC COM 589331 10 7 462 10,000SH Defined " 10,000 METLIFE INC COM 59156R 10 8 1,654 49,115SH Sole 49,115 NATIONAL CITY CORP COM 635405 10 3 1,405 41,400SH Defined 1 41,400 NISOURCE INC COM 65473P 10 5 658 30,000SH Defined " 30,000 PEPCO HOLDINGS INC COM 713291 10 2 391 20,000SH Defined " 20,000 PFIZER INC COM 717081 10 3 353 10,000SH Defined " 10,000 POPULAR INC COM 733174 10 6 8,491 189,320SH Defined " 189,320 PROVIDENT FINL GROUP INC COM 743866 10 5 15,965 499,704SH Defined " 499,704 PROVIDENT FINL GROUP INC COM 743866 10 5 4,465 139,739SH Other 139,739 RCN CORP COM 749361 10 1 14 20,000SH Defined 1 20,000 RCN CORP COM 749361 10 1 34 50,250SH Other 50,250 SBC COMMUNICATIONS INC COM 78387G 10 3 521 20,000SH Defined 1 20,000 SANTANDER BANCORP COM 802809 10 3 737 30,250SH Defined " 30,250 SEABULK INTL INC COM 81169P 10 1 160 19,600SH Sole 19,600 SEABULK INTL INC COM 81169P 10 1 1,788 219,101SH Defined 1 219,101 SEABULK INTL INC COM 81169P 10 1 800 98,000SH Other 98,000 SEPRACOR INC COM 817315 10 4 191 8,000SH Defined 1 8,000 TENET HEALTHCARE CORP COM 88033G 10 0 2,435 151,700SH Defined " 151,700 US BANCORP DEL COM NEW 902973 30 4 848 28,462SH Other 28,462 UNITED AUTO GROUP INC COM 909440 10 9 642 20,500SH Defined 1 20,500 WALTER INDS INC COM 93317Q 10 5 1,707 127,900SH Defined " 127,900 WASHINGTON MUT INC COM 939322 10 3 2,213 55,179SH Defined " 55,179 ZENITH NATL INS CORP COM 989390 10 9 3,219 98,900SH Other 98,900 ---------- REPORT TOTAL $970,553 ==========