<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000933782
<NAME> BUFFALO EQUITY FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 27709
<INVESTMENTS-AT-VALUE> 37909
<RECEIVABLES> 39
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 37948
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 59
<TOTAL-LIABILITIES> 59
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 23798
<SHARES-COMMON-STOCK> 1649
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 16
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3875
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 10200
<NET-ASSETS> 37889
<DIVIDEND-INCOME> 188
<INTEREST-INCOME> 34
<OTHER-INCOME> (3)
<EXPENSES-NET> 187
<NET-INVESTMENT-INCOME> 32
<REALIZED-GAINS-CURRENT> 1217
<APPREC-INCREASE-CURRENT> 502
<NET-CHANGE-FROM-OPS> 1751
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (16)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5250
<NUMBER-OF-SHARES-REDEEMED> (2774)
<SHARES-REINVESTED> 16
<NET-CHANGE-IN-ASSETS> 4227
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 187
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 187
<AVERAGE-NET-ASSETS> 34803
<PER-SHARE-NAV-BEGIN> 21.91
<PER-SHARE-NII> (.02)
<PER-SHARE-GAIN-APPREC> 1.05
<PER-SHARE-DIVIDEND> .03
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 22.97
<EXPENSE-RATIO> 1.07
</TABLE>
