<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000880366
<NAME> SMITH BARNEY U.S. 5000 INDEX FUND
<SERIES>
   <NUMBER> 3
   <NAME> SMITH BARNEY INVESTMENT TRUST

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               DEC-31-1999
<INVESTMENTS-AT-COST>                        1,147,149
<INVESTMENTS-AT-VALUE>                         152,725
<RECEIVABLES>                                      567
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                         1,300,441
<TOTAL-ASSETS>                                       0
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                         13,876
<OTHER-ITEMS-LIABILITIES>                       13,876
<TOTAL-LIABILITIES>                                  0
<SENIOR-EQUITY>                              1,223,573
<PAID-IN-CAPITAL-COMMON>                             0
<SHARES-COMMON-STOCK>                          110,491
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                          883
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          1,693
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        60,416
<NET-ASSETS>                                 1,286,565
<DIVIDEND-INCOME>                                1,052
<INTEREST-INCOME>                                  257
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     641
<NET-INVESTMENT-INCOME>                            668
<REALIZED-GAINS-CURRENT>                         1,693
<APPREC-INCREASE-CURRENT>                       60,416
<NET-CHANGE-FROM-OPS>                           62,777
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        113,327
<NUMBER-OF-SHARES-REDEEMED>                      2,836
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                       1,286,565
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              157
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 24,622
<AVERAGE-NET-ASSETS>                           521,000
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                   0.01
<PER-SHARE-GAIN-APPREC>                           1.63
<PER-SHARE-DIVIDEND>                              0.00
<PER-SHARE-DISTRIBUTIONS>                         0.00
<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                              11.64
<EXPENSE-RATIO>                                   0.68


</TABLE>