[ARTICLE] 6
[CIK] 0000880366
[NAME] SMITH BARNEY INVESTMENT TRUST
[SERIES]
   [NUMBER] 004
   [NAME] LARGE CAPITALIZATION GROWTH FUND CLASS L
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          NOV-30-1999
[PERIOD-END]                               NOV-30-1999
[INVESTMENTS-AT-COST]                    2,471,205,237
[INVESTMENTS-AT-VALUE]                   3,409,714,188
[RECEIVABLES]                               31,399,652
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                           3,441,443,840
[PAYABLE-FOR-SECURITIES]                     6,308,750
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                   15,762,305
[TOTAL-LIABILITIES]                         22,071,055
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                 2,474,797,719
[SHARES-COMMON-STOCK]                       28,772,846
[SHARES-COMMON-PRIOR]                       10,875,243
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      5,736,115
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   938,508,951
[NET-ASSETS]                             3,419,042,785
[DIVIDEND-INCOME]                           21,965,053
[INTEREST-INCOME]                              333,361
[OTHER-INCOME]                                       0
[EXPENSES-NET]                              41,162,460
[NET-INVESTMENT-INCOME]                   (18,864,046)
[REALIZED-GAINS-CURRENT]                    38,286,757
[APPREC-INCREASE-CURRENT]                  686,959,103
[NET-CHANGE-FROM-OPS]                      706,381,814
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                     8,951,130
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                     20,331,362
[NUMBER-OF-SHARES-REDEEMED]                  2,812,646
[SHARES-REINVESTED]                            378,887
[NET-CHANGE-IN-ASSETS]                   2,136,618,625
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                   13,267,803
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                       18,933,051
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                             41,162,460
[AVERAGE-NET-ASSETS]                       463,829,552
[PER-SHARE-NAV-BEGIN]                            17.26
[PER-SHARE-NII]                                 (0.22)
[PER-SHARE-GAIN-APPREC]                           6.85
[PER-SHARE-DIVIDEND]                              0.00
[PER-SHARE-DISTRIBUTIONS]                         0.33
[RETURNS-OF-CAPITAL]                              0.00
[PER-SHARE-NAV-END]                              23.56
[EXPENSE-RATIO]                                   1.89
</TABLE>