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
                                                             ==========