WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000880366
<NAME> SMITH BARNEY INVESTMENT TRUST
<SERIES>
   <NUMBER> 006
   <NAME> SMITH BARNEY MID CAP BLEND FUND CLASS A

<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>                          2,802,904
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   539,970,322
<SHARES-COMMON-STOCK>                        7,358,817
<SHARES-COMMON-PRIOR>                        2,697,483
<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>                     4,084,092
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     18,175,913
<NUMBER-OF-SHARES-REDEEMED>                 13,743,206
<SHARES-REINVESTED>                            228,627
<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>                        93,058,073
<PER-SHARE-NAV-BEGIN>                            13.63
<PER-SHARE-NII>                                   0.04
<PER-SHARE-GAIN-APPREC>                           4.63
<PER-SHARE-DIVIDEND>                              0.01
<PER-SHARE-DISTRIBUTIONS>                         0.55
<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                              17.74
<EXPENSE-RATIO>                                   1.16



</TABLE>