<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
<NUMBER>32
<NAME> MULTI-MARKET FIXED INCOME, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-31-1999
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 77,411
<INVESTMENTS-AT-VALUE> 71,515
<RECEIVABLES> 4,469
<ASSETS-OTHER> 5
<OTHER-ITEMS-ASSETS> 494
<TOTAL-ASSETS> 76,483
<PAYABLE-FOR-SECURITIES> 17,058
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 121
<TOTAL-LIABILITIES> 17,179
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 67,290
<SHARES-COMMON-STOCK> 6,500
<SHARES-COMMON-PRIOR> 10,708
<ACCUMULATED-NII-CURRENT> 1,117
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3,462)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (5,641)
<NET-ASSETS> 59,304
<DIVIDEND-INCOME> 50
<INTEREST-INCOME> 7,024
<OTHER-INCOME> 0
<EXPENSES-NET> (541)
<NET-INVESTMENT-INCOME> 6,533
<REALIZED-GAINS-CURRENT> (1,643)
<APPREC-INCREASE-CURRENT> (1,115)
<NET-CHANGE-FROM-OPS> 3,775
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (6,914)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,451
<NUMBER-OF-SHARES-REDEEMED> (6,028)
<SHARES-REINVESTED> 369
<NET-CHANGE-IN-ASSETS> (42,002)
<ACCUMULATED-NII-PRIOR> 1,742
<ACCUMULATED-GAINS-PRIOR> (2,046)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 390
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 551
<AVERAGE-NET-ASSETS> 86,765
<PER-SHARE-NAV-BEGIN> 9.46
<PER-SHARE-NII> 0.80
<PER-SHARE-GAIN-APPREC> (0.39)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.75)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.12
<EXPENSE-RATIO> 0.58
</TABLE>
