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

                                    FORM 13F

                              FORM 13F COVER PAGE


                  Report for the Quarter Ended March 31, 2004



                          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            May 7, 2004
- ----------------------------------
Fred J. Runk
Senior Vice President and Treasurer


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








                                 Page 1 of 4

FORM 13F SUMMARY PAGE --------------------- Number of Other Included Managers: 1 ----------- Form 13F Information Table Entry Total: 84 ----------- Form 13F Information Table Value Total (thousands): $ 1,027,853 ----------- 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 - -------------------------------------------- GLOBAL CROSSING LTD SHS NEW G3921A 17 5 130 6,521SH Defined 1 6,521 AMERICAN ELEC PWR INC COM 025537 10 1 4,378 133,000SH Defined " 133,000 BANK OF AMERICA CORPORATION COM 060505 10 4 10,868 134,200SH Defined " 134,200 COMCAST CORP NEW CL A 20030N 10 1 580 20,153SH Defined " 20,153 COMCAST CORP NEW CL A SPL 20030N 20 0 1,358 48,760SH Defined " 48,760 CONAGRA FOODS INC COM 205887 10 2 2,206 81,900SH Defined " 81,900 DPL INC COM 233293 10 9 8,018 427,600SH Defined " 427,600 DOMINION RES INC VA NEW COM 25746U 10 9 4,051 63,000SH Defined " 63,000 ENERGY EAST CORP COM 29266M 10 9 2,036 80,300SH Defined " 80,300 FIRSTENERGY CORP COM 337932 10 7 2,149 55,000SH Defined " 55,000 FLEETBOSTON FINL CORP COM 339030 10 8 2,919 65,000SH Defined " 65,000 GREAT AMERN FINL RES INC COM 389915 10 9 607,800 38,565,995SH Defined " 38,565,995 KROGER CO COM 501044 10 1 125 7,500SH Defined " 7,500 LEUCADIA NATL CORP COM 527288 10 4 3,152 59,161SH Defined " 59,161 MARSH SUPERMARKETS INC CL B 571783 20 8 7,503 602,644SH Defined " 602,644 MARSH SUPERMARKETS INC CL A 571783 30 7 9,271 709,844SH Defined " 709,844 MERCK & CO INC COM 589331 10 7 2,210 50,000SH Defined " 50,000 NTL INC DEL COM 62940M 10 4 4,110 69,040SH Defined " 69,040 NATIONAL CITY CORP COM 635405 10 3 6,760 190,000SH Defined " 190,000 NISOURCE INC COM 65473P 10 5 3,294 155,000SH Defined " 155,000 PNC FINL SVCS GROUP INC COM 693475 10 5 3,547 64,000SH Defined " 64,000 PEPCO HOLDINGS INC COM 713291 10 2 1,850 90,500SH Defined " 90,500 PFIZER INC COM 717081 10 3 5,258 150,000SH Defined " 150,000 PROGRESS ENERGY INC COM 743263 10 5 5,965 126,700SH Defined " 126,700 PROVIDENT FINL GROUP INC COM 743866 10 5 226,204 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 6 21,000SH Defined " 21,000 SBC COMMUNICATIONS INC COM 78387G 10 3 1,472 60,000SH Defined " 60,000 SARA LEE CORP COM 803111 10 3 1,093 50,000SH Defined " 50,000 SEABULK INTL INC COM 81169P 10 1 462 52,456SH Defined " 52,456 SUNTERRA CORP COM NEW 86787D 20 8 880 65,000SH Defined " 65,000 TIME WARNER INC COM 887317 10 5 441 26,149SH Defined " 26,149 TORTOISE ENERGY INFRSTRCTR C COM 89147L 10 0 1,253 50,000SH Defined " 50,000 TYCO INTL LTD NEW COM 902124 10 6 3,295 115,000SH Defined " 115,000 U.S. BANCORP DEL COM NEW 902973 30 4 1,383 50,000SH Defined " 50,000 UNITED AUTO GROUP INC COM 909440 10 9 621 22,700SH Defined " 22,700 WALTER INDS INC COM 93317Q 10 5 1,416 118,600SH Defined " 118,600 WASHINGTON MUT INC COM 939322 10 3 2,568 60,134SH Defined " 60,134 ZENITH NATL INS CORP COM 989390 10 9 968 24,700SH Defined " 24,700

HOLDINGS OF OTHER ENTITIES EACH HAVING LESS THAN $100 MILLION IN 13F SECURITIES - ------------------------------- GLOBAL CROSSING LTD SHS NEW G3921A 17 5 278 13,897SH Defined 1 13,897 BANK OF AMERICA CORPORATION COM 060505 10 4 2 24SH Sole 24 BANK OF AMERICA CORPORATION COM 060505 10 4 1,620 20,000SH Defined 1 20,000 BRISTOL MYERS SQUIBB CO COM 110122 10 8 242 10,000SH Defined " 10,000 BRISTOL MYERS SQUIBB CO COM 110122 10 8 242 10,000SH Other 10,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 384 16,800SH Defined 1 16,800 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 68 2,977SH Other 2,977 COMCAST CORP NEW CLA 20030N 10 1 426 14,800SH Other 14,800 CONAGRA FOODS INC COM 205887 10 2 3,233 120,000SH Defined 1 120,000 DPL INC COM 233293 10 9 1,688 90,000SH Defined " 90,000 DPL INC COM 233293 10 9 188 10,000SH Other 10,000 DOMINION RES INC VA NEW COM 25746U 10 9 1,608 25,000SH Defined 1 25,000 ENERGY EAST CORP COM 29266M 10 9 2,029 80,000SH Defined " 80,000 FIRSTENERGY CORP COM 337932 10 7 2,345 60,000SH Defined " 60,000 JOHN HANCOCK BK & THRIFT OPP SH BEN INT 409735 10 7 679 67,200SH Other 67,200 HOST MARRIOT CORP NEW COM 44107P 10 4 129 10,110SH Other 10,110 KROGER CO COM 501044 10 1 42 2,500SH Defined 1 2,500 LAIDLAW INTL INC COM 50730R 10 2 997 68,543SH Defined " 68,543 LEUCADIA NATL CORP COM 527288 10 4 1,404 26,352SH Sole 26,352 LEUCADIA NATL CORP COM 527288 10 4 263 4,935SH Defined 1 4,935 MERCK & CO INC COM 589331 10 7 442 10,000SH Defined " 10,000 METLIFE INC COM 59156R 10 8 1,752 49,115SH Sole 49,115 NTL INC DEL COM 62940M 10 4 10,999 184,760SH Defined 1 184,760 NATIONAL CITY CORP COM 635405 10 3 1,473 41,400SH Defined " 41,400 NISOURCE INC COM 65473P 10 5 638 30,000SH Defined " 30,000 PEPCO HOLDINGS INC COM 713291 10 2 409 20,000SH Defined " 20,000 PFIZER INC COM 717081 10 3 702 20,000SH Defined " 20,000 POPULAR INC COM 733174 10 6 8,160 189,320SH Defined " 189,320 PROVIDENT FINL GROUP INC COM 743866 10 5 20,079 499,704SH Defined " 499,704 PROVIDENT FINL GROUP INC COM 743866 10 5 5,615 139,739SH Other 139,739 RCN CORP COM 749361 10 1 6 20,000SH Defined 1 20,000 RCN CORP COM 749361 10 1 15 50,250SH Other 50,250 SBC COMMUNICATIONS INC COM 78387G 10 3 491 20,000SH Defined 1 20,000 SANTANDER BANCORP COM 802809 10 3 832 30,250SH Defined " 30,250 SEABULK INTL INC COM 81169P 10 1 172 19,600SH Sole 19,600 SEABULK INTL INC COM 81169P 10 1 1,876 213,201SH Defined 1 213,201 SEABULK INTL INC COM 81169P 10 1 862 98,000SH Other 98,000 SUNTERRA CORP COM NEW 86787D 20 8 2,031 150,000SH Defined 1 150,000 SUNTRUST BKS INC COM 867914 10 3 1,394 20,000SH Defined " 20,000 TORTOISE ENERGY INFRSTRCTR C COM 89147L 10 0 1,253 50,000SH Defined " 50,000 US BANKORP DEL COM NEW 902973 90 4 787 28,462SH Other 28,462 UNITED AUTO GROUP INC COM 909440 10 9 561 20,500SH Defined 1 20,500 WALTER INDS INC COM 93317Q 10 5 1,527 127,900SH Defined " 127,900 WASHINGTON MUT INC COM 939322 10 3 2,356 55,179SH Defined " 55,179 ZENITH NATL INS CORP COM 989390 10 9 3,877 98,900SH Other 98,900 ---------- REPORT TOTAL $1,027,853 ==========