<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.
</LEGEND>
<SERIES>
<NUMBER> 014
<NAME> NUVEEN FLOATING RATE FUND - CLASS R
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAY-31-2000
<PERIOD-START> JUN-01-1999
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 68656
<INVESTMENTS-AT-VALUE> 68702
<RECEIVABLES> 1276
<ASSETS-OTHER> 1
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 69979
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1396
<TOTAL-LIABILITIES> 1396
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 68566
<SHARES-COMMON-STOCK> 1653
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> (32)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 46
<NET-ASSETS> 68583
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 2065
<OTHER-INCOME> 0
<EXPENSES-NET> 315
<NET-INVESTMENT-INCOME> 1750
<REALIZED-GAINS-CURRENT> 3
<APPREC-INCREASE-CURRENT> 45
<NET-CHANGE-FROM-OPS> 1798
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 644
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1649
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> 68483
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 178
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 887
<AVERAGE-NET-ASSETS> 15853
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> .39
<PER-SHARE-GAIN-APPREC> .02
<PER-SHARE-DIVIDEND> (.41)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.00
<EXPENSE-RATIO> .70
</TABLE>