[ARTICLE] 6
[CIK] 0000880366
[NAME] SMITH BARNEY INVESTMENT TRUST
[SERIES]
   [NUMBER] 4
   [NAME] SMITH BARNEY LARGE CAPITALIZATION GROWTH FUND. CLASS Y
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          NOV-30-1998
[PERIOD-END]                               NOV-30-1998
[INVESTMENTS-AT-COST]                    1,026,183,590
[INVESTMENTS-AT-VALUE]                   1,277,733,438
[RECEIVABLES]                               17,753,115
[ASSETS-OTHER]                                     331
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                           1,295,486,884
[PAYABLE-FOR-SECURITIES]                    10,986,800
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                    2,075,924
[TOTAL-LIABILITIES]                         13,062,724
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                 1,017,606,509
[SHARES-COMMON-STOCK]                        7,636,528
[SHARES-COMMON-PRIOR]                        6,895,750
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                     13,267,803
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   251,549,848
[NET-ASSETS]                             1,282,424,160
[DIVIDEND-INCOME]                            5,816,020
[INTEREST-INCOME]                              208,309
[OTHER-INCOME]                                       0
[EXPENSES-NET]                              11,761,912
[NET-INVESTMENT-INCOME]                    (5,737,583)
[REALIZED-GAINS-CURRENT]                    19,005,386
[APPREC-INCREASE-CURRENT]                  241,579,261
[NET-CHANGE-FROM-OPS]                      254,847,064
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      117,445
[DISTRIBUTIONS-OF-GAINS]                        71,178
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        740,914
[NUMBER-OF-SHARES-REDEEMED]                        136
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                     869,780,943
[ACCUMULATED-NII-PRIOR]                        501,575
[ACCUMULATED-GAINS-PRIOR]                      350,504
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        5,558,989
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                             11,761,912
[AVERAGE-NET-ASSETS]                       108,440,384
[PER-SHARE-NAV-BEGIN]                            12.29
[PER-SHARE-NII]                                   0.00
[PER-SHARE-GAIN-APPREC]                           5.23
[PER-SHARE-DIVIDEND]                              0.02
[PER-SHARE-DISTRIBUTIONS]                         0.01
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              17.49
[EXPENSE-RATIO]                                   0.83
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>