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> 6
   <NAME> SMITH BARNEY MID CAP BLEND FUND - CLASS L

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          NOV-30-2000
<PERIOD-END>                               MAY-31-2000
<INVESTMENTS-AT-COST>                      769,316,927
<INVESTMENTS-AT-VALUE>                     953,639,770
<RECEIVABLES>                                8,210,555
<ASSETS-OTHER>                                     970
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             961,851,295
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,028,779
<TOTAL-LIABILITIES>                          1,028,779
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   701,599,566
<SHARES-COMMON-STOCK>                       11,735,502
<SHARES-COMMON-PRIOR>                        9,540,353
<ACCUMULATED-NII-CURRENT>                    (964,207)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                     77,843,278
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   182,343,879
<NET-ASSETS>                               960,822,516
<DIVIDEND-INCOME>                            1,923,951
<INTEREST-INCOME>                            3,722,369
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               6,610,527
<NET-INVESTMENT-INCOME>                      (964,207)
<REALIZED-GAINS-CURRENT>                    83,140,033
<APPREC-INCREASE-CURRENT>                  678,663,363
<NET-CHANGE-FROM-OPS>                      150,042,162
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                     1,701,486
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      2,837,651
<NUMBER-OF-SHARES-REDEEMED>                    723,108
<SHARES-REINVESTED>                             80,606
<NET-CHANGE-IN-ASSETS>                     305,225,369
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    1,149,282
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        3,150,470
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              6,610,527
<AVERAGE-NET-ASSETS>                       218,885,778
<PER-SHARE-NAV-BEGIN>                            17.57
<PER-SHARE-NII>                                 (0.05)
<PER-SHARE-GAIN-APPREC>                           3.84
<PER-SHARE-DIVIDEND>                              0.00
<PER-SHARE-DISTRIBUTIONS>                         0.15
<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                              21.21
<EXPENSE-RATIO>                                   1.89


</TABLE>