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> 181
<NAME> MODERATE DURATION 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> 545303
<INVESTMENTS-AT-VALUE> 544684
<RECEIVABLES> 56505
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 1520
<TOTAL-ASSETS> 602709
<PAYABLE-FOR-SECURITIES> 146468
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 11748
<TOTAL-LIABILITIES> 158216
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 454796
<SHARES-COMMON-STOCK> 45841
<SHARES-COMMON-PRIOR> 40653
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 189
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 9840
<ACCUM-APPREC-OR-DEPREC> (274)
<NET-ASSETS> 444493
<DIVIDEND-INCOME> 142
<INTEREST-INCOME> 15421
<OTHER-INCOME> 0
<EXPENSES-NET> 995
<NET-INVESTMENT-INCOME> 14568
<REALIZED-GAINS-CURRENT> 4905
<APPREC-INCREASE-CURRENT> 3243
<NET-CHANGE-FROM-OPS> 22716
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 14521
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10973
<NUMBER-OF-SHARES-REDEEMED> 7279
<SHARES-REINVESTED> 1494
<ISSUED-IN-REORGANIZATION> 0
<FUND-REIMBURSEMENT-FEE> 0
<NET-CHANGE-IN-ASSETS> 57367
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 236
<OVERDIST-NET-GAINS-PRIOR> 14745
<GROSS-ADVISORY-FEES> 551
<INTEREST-EXPENSE> 2
<GROSS-EXPENSE> 995
<AVERAGE-NET-ASSETS> 443591
<PER-SHARE-NAV-BEGIN> 9.52
<PER-SHARE-NII> 0.31
<PER-SHARE-GAIN-APPREC> 0.18
<PER-SHARE-DIVIDEND> (0.31)
<PER-SHARE-DISTRIBUTIONS> 0.00
<PER-SHARE-FUND-REIMBURSEMENT-FEE> 0.00
<PER-SHARE-NAV-END> 9.70
<EXPENSE-RATIO> 0.45
</TABLE>
