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

                                    FORM 13F

                              FORM 13F COVER PAGE


                  Report for the Quarter Ended March 31, 2010



                          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.

                                 Robert H. Ruffing
                     	   Vice President and Controller
                                   (513) 579-2144
                -----------------------------------------------
                (Name, Title and Phone Number of Person Signing
                 this Report on Behalf of Reporting Manager)



Signature:

/s/Robert H. Ruffing                  Cincinnati, Ohio         May 7, 2010
- -------------------------------
Robert H. Ruffing
Vice President and Controller


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










FORM 13F SUMMARY PAGE --------------------- Number of Other Included Managers: 1 ----------- Form 13F Information Table Entry Total: 51 ----------- Form 13F Information Table Value Total (thousands): $302,394 ----------- 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

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 COMMERCIAL LINES COM PAR $0.01 025195 40 5 1,763 70,250SH Defined 1 70,250 AMERICAN RAILCAR INDS INC COM 02916P 10 3 827 68,000SH Defined " 68,000 ANWORTH MORTGAGE ASSET CP COM 037347 10 1 843 125,000SH Defined " 125,000 BANK OF AMERICA CORPORATION COM 060505 10 4 1,930 108,120SH Defined " 108,120 CALAMP CORP COM 128126 10 9 393 139,750SH Defined " 139,750 DELTA AIR LINES INC DEL COM NEW 247361 70 2 193 13,239SH Defined " 13,239 DISH NETWORK CORP CL A 25470M 10 9 784 37,675SH Defined " 37,675 ECHOSTAR CORP CL A 278768 10 6 503 24,786SH Defined " 24,786 FLAGSTAR BANCORP INC COM 337930 10 1 99 165,000SH Defined " 165,000 FULL HOUSE RESORTS INC COM 359678 10 9 101 35,331SH Defined " 35,331 INSTEEL INDUSTRIES INC COM 45774W 10 8 263 24,609SH Defined " 24,609 MYR GROUP INC DEL COM 55405W 10 4 6,273 384,615SH Defined " 384,615 NATIONAL INTERSTATE CORP COM 63654U 10 0 211,242 10,200,000SH Defined " 10,200,000 O CHARLEYS INC COM 670823 10 3 264 29,500SH Defined " 29,500 OMEROS CORP COM 682143 10 2 718 102,040SH Defined " 102,040 PATTERSON UTI ENERGY INC COM 703481 10 1 559 40,000SH Defined " 40,000 TIME WARNER INC COM NEW 887317 30 3 273 8,716SH Defined " 8,716 TORTOISE ENERGY CAP CORP COM 89147U 10 0 636 25,800SH Defined " 25,800 VIRGIN MEDIA INC COM 92769L 10 1 12,735 737,807SH Defined " 737,807

HOLDINGS OF OTHER ENTITIES EACH HAVING LESS THAN $100 MILLION IN 13F SECURITIES - ------------------------------ ACE LTD SHS H0023R 10 5 3,295 63,000SH Sole 63,000 AMERICAN COMMERCIAL LINES COM PAR $0.01 025195 40 5 2,140 85,250SH Defined 85,250 AMERICAN RAILCAR INDS INC COM 02916P 10 3 822 67,581SH Defined 67,581 ANWORTH MORTGAGE ASSET CP COM 037347 10 1 843 125,000SH Defined 125,000 BANK OF AMERICA CORPORATION COM 060505 10 4 5,774 323,480SH Defined 1 323,480 BERKLEY W R CORP COM 084423 10 2 3,053 117,000SH Sole 117,000 CIT GROUP INC COM NEW 125581 80 1 1,625 41,730SH Defined 41,730 CALAMP CORP COM 128126 10 9 396 140,750SH Defined 140,750 CHUBB CORP COM 171232 10 1 3,681 71,000SH Sole 71,000 DELTA AIR LINES INC DEL COM NEW 247361 70 2 220 15,097SH Defined 15,097 DEX ONE CORP COM 25212W 10 0 301 10,772SH Defined 10,772 DISH NETWORK CORP CL A 25470M 10 9 1,177 56,512SH Defined 56,512 EATON VANCE TAX MNG GBL DV E COM 27829F 10 8 483 40,000SH Defined 1 40,000 ECHOSTAR CORP CL A 278768 10 6 754 37,179SH Defined 37,179 FLAGSTAR BANCORP INC COM 337930 10 1 99 165,000SH Defined 165,000 FULL HOUSE RESORTS INC COM 359678 10 9 91 31,617SH Defined 31,617 INSTEEL INDUSTRIES INC COM 45774W 10 8 237 22,216SH Defined 22,216 ISHARES TR INDEX MSCI EAFE IDX 464287 46 5 2,407 43,000SH Defined 1 43,000 KEYCORP NEW COM 493267 10 8 405 52,222SH Defined " 52,222 MANAGED HIGH YIELD PLUS FD I COM 561911 10 8 23 10,000SH Defined " 10,000 NUVEEN FLTNG RTE INCM OPP FD COM SHS 6706EN 10 0 954 78,300SH Defined 78,300 O CHARLEYS INC COM 670823 10 3 399 44,654SH Defined 44,654 OMEROS CORP COM 682143 10 2 1,078 153,061SH Defined 153,061 PATTERSON UTI ENERGY INC COM 703481 10 1 559 40,000SH Defined 40,000 PIMCO HIGH INCOME FD COM SHS 722014 10 7 1,503 122,800SH Defined 122,800 POWERSHARES ETF TRUST DYNAMIC MKT PT 73935X 10 4 968 24,400SH Defined 1 24,400 POWERSHARES ETF TRUST HI YLD EQ DVDN 73935X 30 2 174 21,300SH Defined " 21,300 SPDR S&P 500 ETF TR UNIT SER 1 S&P 78462F 10 3 5,148 44,000SH Defined " 44,000 SELECT SECTOR SPDR TR SBI CONS STPLS 81369Y 30 8 979 35,060SH Defined " 35,060 SELECT SECTOR SPDR TR SBI INT-UTILS 81369Y 88 6 222 7,500SH Defined " 7,500 TORTOISE ENERGY CAP CORP COM 89147U 10 0 2,119 85,900SH Defined 85,900 VIRGIN MEDIA INC COM 92769L 10 1 20,066 1,162,588SH Defined 1,162,588 ---------- REPORT TOTAL $302,394 ==========