[ARTICLE] 6
[CIK] 0000880366
[NAME] SMITH BARNEY INVESTMENT TRUST
[SERIES]
   [NUMBER] 4
   [NAME] LARGE CAPITALIZATION GROWTH FUND. CLASS Y
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          NOV-30-1998
[PERIOD-END]                               MAY-31-1998
[INVESTMENTS-AT-COST]                      588,973,533
[INVESTMENTS-AT-VALUE]                     705,104,188
[RECEIVABLES]                                6,356,831
[ASSETS-OTHER]                               1,019,279
[OTHER-ITEMS-ASSETS]                            92,506
[TOTAL-ASSETS]                             712,572,804
[PAYABLE-FOR-SECURITIES]                     2,415,774
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      543,017
[TOTAL-LIABILITIES]                          2,958,791
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   597,416,780
[SHARES-COMMON-STOCK]                        7,328,863
[SHARES-COMMON-PRIOR]                        6,895,750
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                     (1,750,654)
[ACCUMULATED-NET-GAINS]                              0
[OVERDISTRIBUTION-GAINS]                   (2,182,768)
[ACCUM-APPREC-OR-DEPREC]                   166,130,655
[NET-ASSETS]                               709,614,013
[DIVIDEND-INCOME]                            2,191,593
[INTEREST-INCOME]                               72,192
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               4,014,928
[NET-INVESTMENT-INCOME]                    (1,751,143)
[REALIZED-GAINS-CURRENT]                   (2,185,985)
[APPREC-INCREASE-CURRENT]                  106,160,068
[NET-CHANGE-FROM-OPS]                      102,222,940
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      117,445
[DISTRIBUTIONS-OF-GAINS]                        71,179
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        433,249
[NUMBER-OF-SHARES-REDEEMED]                        136
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                     296,970,796
[ACCUMULATED-NII-PRIOR]                        501,575
[ACCUMULATED-GAINS-PRIOR]                      350,504
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        2,013,474
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              4,014,928
[AVERAGE-NET-ASSETS]                        99,766,205
[PER-SHARE-NAV-BEGIN]                            12.29
[PER-SHARE-NII]                                 (0.01)
[PER-SHARE-GAIN-APPREC]                          02.80
[PER-SHARE-DIVIDEND]                             00.02
[PER-SHARE-DISTRIBUTIONS]                        00.01
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              15.07
[EXPENSE-RATIO]                                  00.80
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>