<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000880366
<NAME> SMITH BARNEY INVESTMENT TRUST
<SERIES>
   <NUMBER> 4
   <NAME> SMITH BARNEY LARGE CAPITALIZATION GROWTH FUND. CLASS Y
       
<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>