[ARTICLE] 6
[CIK] 0000880366
[NAME] SMITH BARNEY INVESTMENT TRUST
[SERIES]
   [NUMBER] 5
   [NAME] SMITH BARNEY S&P 500 INDEX FUND. CLASS A
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          NOV-30-1998
[PERIOD-END]                               NOV-30-1998
[INVESTMENTS-AT-COST]                       51,394,467
[INVESTMENTS-AT-VALUE]                      55,059,577
[RECEIVABLES]                                2,451,722
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                              57,511,299
[PAYABLE-FOR-SECURITIES]                       140,460
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      373,881
[TOTAL-LIABILITIES]                            514,341
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                    53,009,503
[SHARES-COMMON-STOCK]                        4,608,002
[SHARES-COMMON-PRIOR]                                0
[ACCUMULATED-NII-CURRENT]                      256,578
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                         83,845
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                     3,647,032
[NET-ASSETS]                                   256,578
[DIVIDEND-INCOME]                              342,154
[INTEREST-INCOME]                               56,846
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                 142,422
[NET-INVESTMENT-INCOME]                        256,422
[REALIZED-GAINS-CURRENT]                        83,845
[APPREC-INCREASE-CURRENT]                    3,647,032
[NET-CHANGE-FROM-OPS]                        3,987,455
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      6,596,036
[NUMBER-OF-SHARES-REDEEMED]                  1,988,034
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                      56,996,958
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           60,657
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                344,205
[AVERAGE-NET-ASSETS]                        26,427,681
[PER-SHARE-NAV-BEGIN]                            10.00
[PER-SHARE-NII]                                  00.05
[PER-SHARE-GAIN-APPREC]                          00.93
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              11.98
[EXPENSE-RATIO]                                  00.59
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>