WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000878089
<NAME> PAINEWEBBER MANAGED ASSETS TRUST
<SERIES>
<NUMBER> 1
<NAME> MID CAP FUND CLASS A
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<S> <C>
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<FISCAL-YEAR-END> AUG-31-2000
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<NET-INVESTMENT-INCOME> (1661)
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<NET-CHANGE-IN-ASSETS> (7833)
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</TABLE>
