WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000808424
<NAME> PAINEWEBBER INVESTMENT SERIES
<SERIES>
<NUMBER> 1
<NAME> GLOBAL INCOME FUND A
<MULTIPLIER> 1000
<S> <C>
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<PERIOD-END> APR-30-2000
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<ACCUMULATED-NII-CURRENT> (83)
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<OVERDISTRIBUTION-GAINS> (22242)
<ACCUM-APPREC-OR-DEPREC> (20105)
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<EXPENSES-NET> (1868)
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<REALIZED-GAINS-CURRENT> (6805)
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<NUMBER-OF-SHARES-SOLD> 5289
<NUMBER-OF-SHARES-REDEEMED> (10458)
<SHARES-REINVESTED> 545
<NET-CHANGE-IN-ASSETS> (58639)
<ACCUMULATED-NII-PRIOR> (151)
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> (15173)
<GROSS-ADVISORY-FEES> 1087
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<AVERAGE-NET-ASSETS> 289831
<PER-SHARE-NAV-BEGIN> 9.76
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<PER-SHARE-NAV-END> 9.31
<EXPENSE-RATIO> 1.28
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
