[ARTICLE] 6
[CIK] 0000880366
[NAME] SMITH BARNEY INVESTMENT TRUST
[SERIES]
   [NUMBER] 006
   [NAME] SMITH BARNEY MID CAP BLEND FUND CLASS L
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          NOV-30-1999
[PERIOD-END]                               NOV-30-1999
[INVESTMENTS-AT-COST]                      553,807,619
[INVESTMENTS-AT-VALUE]                     644,078,411
[RECEIVABLES]                               14,418,711
[ASSETS-OTHER]                                   1,029
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                             658,498,151
[PAYABLE-FOR-SECURITIES]                        98,100
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                    2,802,904
[TOTAL-LIABILITIES]                          2,901,004
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   539,970,322
[SHARES-COMMON-STOCK]                        9,540,353
[SHARES-COMMON-PRIOR]                        3,311,694
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      1,149,282
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   114,477,543
[NET-ASSETS]                               655,597,147
[DIVIDEND-INCOME]                            2,357,170
[INTEREST-INCOME]                            4,065,044
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               7,273,363
[NET-INVESTMENT-INCOME]                      (851,149)
[REALIZED-GAINS-CURRENT]                    23,724,939
[APPREC-INCREASE-CURRENT]                   92,751,095
[NET-CHANGE-FROM-OPS]                      115,624,885
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                       18,628
[DISTRIBUTIONS-OF-GAINS]                     4,990,385
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      6,669,388
[NUMBER-OF-SHARES-REDEEMED]                    718,967
[SHARES-REINVESTED]                            278,238
[NET-CHANGE-IN-ASSETS]                     504,639,347
[ACCUMULATED-NII-PRIOR]                         75,601
[ACCUMULATED-GAINS-PRIOR]                  (1,832,594)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        3,544,958
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              7,273,363
[AVERAGE-NET-ASSETS]                       113,360,824
[PER-SHARE-NAV-BEGIN]                            13.60
[PER-SHARE-NII]                                 (0.09)
[PER-SHARE-GAIN-APPREC]                           4.61
[PER-SHARE-DIVIDEND]                              0.00
[PER-SHARE-DISTRIBUTIONS]                         0.55
[RETURNS-OF-CAPITAL]                              0.00
[PER-SHARE-NAV-END]                              17.57
[EXPENSE-RATIO]                                   1.90
</TABLE>