<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000746703
<NAME> PAINEWEBBER MANAGED INVESTMENT TRUST
<SERIES>
<NUMBER> 4
<NAME> LOW DURATION U.S. GOVERNMENT INCOME FUND- Y
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-2000
<PERIOD-START> DEC-01-1999
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 1277
<INVESTMENTS-AT-VALUE> 1271
<RECEIVABLES> 156
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1427
<PAYABLE-FOR-SECURITIES> 672
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 7
<TOTAL-LIABILITIES> 679
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1351
<SHARES-COMMON-STOCK> 328
<SHARES-COMMON-PRIOR> 1328
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 595
<ACCUM-APPREC-OR-DEPREC> (8)
<NET-ASSETS> 748
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 25
<OTHER-INCOME> 0
<EXPENSES-NET> 3
<NET-INVESTMENT-INCOME> 22
<REALIZED-GAINS-CURRENT> (6)
<APPREC-INCREASE-CURRENT> (6)
<NET-CHANGE-FROM-OPS> 10
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 42
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 550
<NUMBER-OF-SHARES-REDEEMED> 1567
<SHARES-REINVESTED> 18
<NET-CHANGE-IN-ASSETS> (2311)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 1
<OVERDIST-NET-GAINS-PRIOR> 2313
<GROSS-ADVISORY-FEES> 2
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3
<AVERAGE-NET-ASSETS> 1494
<PER-SHARE-NAV-BEGIN> 2.30
<PER-SHARE-NII> 0.07
<PER-SHARE-GAIN-APPREC> (0.02)
<PER-SHARE-DIVIDEND> 0.07
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.28
<EXPENSE-RATIO> 0.72
</TABLE>
