WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the
semi-annual report dated September 30, 2000 and is qualified in its
entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 251
<NAME> MUNICIPAL BOND FUND-INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 54056
<INVESTMENTS-AT-VALUE> 54626
<RECEIVABLES> 1805
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 15
<TOTAL-ASSETS> 56446
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 198
<TOTAL-LIABILITIES> 198
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 56254
<SHARES-COMMON-STOCK> 1218
<SHARES-COMMON-PRIOR> 600
<ACCUMULATED-NII-CURRENT> 7
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 583
<ACCUM-APPREC-OR-DEPREC> 570
<NET-ASSETS> 56248
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1551
<OTHER-INCOME> 0
<EXPENSES-NET> 307
<NET-INVESTMENT-INCOME> 1244
<REALIZED-GAINS-CURRENT> 342
<APPREC-INCREASE-CURRENT> 710
<NET-CHANGE-FROM-OPS> 2296
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 280
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1268
<NUMBER-OF-SHARES-REDEEMED> 679
<SHARES-REINVESTED> 29
<ISSUED-IN-REORGANIZATION> 0
<FUND-REIMBURSEMENT-FEE> 0
<NET-CHANGE-IN-ASSETS> 3665
<ACCUMULATED-NII-PRIOR> 4
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 925
<GROSS-ADVISORY-FEES> 70
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 307
<AVERAGE-NET-ASSETS> 11122
<PER-SHARE-NAV-BEGIN> 9.47
<PER-SHARE-NII> 0.24
<PER-SHARE-GAIN-APPREC> 0.15
<PER-SHARE-DIVIDEND> (0.24)
<PER-SHARE-DISTRIBUTIONS> 0.00
<PER-SHARE-FUND-REIMBURSEMENT-FEE> 0.00
<PER-SHARE-NAV-END> 9.62
<EXPENSE-RATIO> 0.50
</TABLE>
