<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000889170
<NAME> MEEDER ADVISOR FUNDS
<SERIES>
<NUMBER> 0041
<NAME> CORE EQUITY FUND
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 16,884,168
<INVESTMENTS-AT-VALUE> 15,092,431
<RECEIVABLES> 26,248
<ASSETS-OTHER> 19,679
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 15,138,358
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 135,194
<TOTAL-LIABILITIES> 135,194
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 12,736,027
<SHARES-COMMON-STOCK> 472,586 <F1>
<SHARES-COMMON-PRIOR> 389,176 <F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 30,197
<ACCUMULATED-NET-GAINS> 505,597
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,791,737
<NET-ASSETS> 15,003,164
<DIVIDEND-INCOME> 66,915
<INTEREST-INCOME> 32,576
<OTHER-INCOME> (77,398)
<EXPENSES-NET> 50,437
<NET-INVESTMENT-INCOME> (28,344)
<REALIZED-GAINS-CURRENT> 493,924
<APPREC-INCREASE-CURRENT> (641,642)
<NET-CHANGE-FROM-OPS> (176,062)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0 <F1>
<DISTRIBUTIONS-OF-GAINS> 0 <F1>
<DISTRIBUTIONS-OTHER> 0 <F1>
<NUMBER-OF-SHARES-SOLD> 152,758 <F1>
<NUMBER-OF-SHARES-REDEEMED> 69,348 <F1>
<SHARES-REINVESTED> 0 <F1>
<NET-CHANGE-IN-ASSETS> 2,384,019
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 11,673
<OVERDISTRIB-NII-PRIOR> 1,853
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 73,160
<AVERAGE-NET-ASSETS> 7,596,756 <F1>
<PER-SHARE-NAV-BEGIN> 18.28 <F1>
<PER-SHARE-NII> (0.02)<F1>
<PER-SHARE-GAIN-APPREC> (0.14)<F1>
<PER-SHARE-DIVIDEND> 0.00 <F1>
<PER-SHARE-DISTRIBUTIONS> 0.00 <F1>
<RETURNS-OF-CAPITAL> 0.00 <F1>
<PER-SHARE-NAV-END> 18.12 <F1>
<EXPENSE-RATIO> 1.75 <F1>
<FN>
<F1> CLASS A
</FN>
</TABLE>
