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

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000355747
<NAME> Smith Barney Small Cap Growth Fund
<SERIES>
   <NUMBER>002
   <NAME>Smith Barney Investment Funds Inc.

<S>                             <C>
<PERIOD-TYPE>                  Year
<FISCAL-YEAR-END>                               Sep-30-2000
<PERIOD-END>                                    Sep-30-2000
<INVESTMENTS-AT-COST>                           241,189,188
<INVESTMENTS-AT-VALUE>                          306,800,010
<RECEIVABLES>                                     6,869,225
<ASSETS-OTHER>                                          320
<OTHER-ITEMS-ASSETS>                                      0
<TOTAL-ASSETS>                                  313,669,555
<PAYABLE-FOR-SECURITIES>                            790,254
<SENIOR-LONG-TERM-DEBT>                                   0
<OTHER-ITEMS-LIABILITIES>                         6,871,666
<TOTAL-LIABILITIES>                               7,661,920
<SENIOR-EQUITY>                                           0
<PAID-IN-CAPITAL-COMMON>                        297,219,417
<SHARES-COMMON-STOCK>                             3,557,254
<SHARES-COMMON-PRIOR>                                     0
<ACCUMULATED-NII-CURRENT>                                 0
<OVERDISTRIBUTION-NII>                                    0
<ACCUMULATED-NET-GAINS>                         (56,822,604)
<OVERDISTRIBUTION-GAINS>                                  0
<ACCUM-APPREC-OR-DEPREC>                         65,610,822
<NET-ASSETS>                                    306,007,635
<DIVIDEND-INCOME>                                   156,379
<INTEREST-INCOME>                                   827,431
<OTHER-INCOME>                                            0
<EXPENSES-NET>                                    2,683,959
<NET-INVESTMENT-INCOME>                          (1,700,149)
<REALIZED-GAINS-CURRENT>                        (56,822,604)
<APPREC-INCREASE-CURRENT>                        65,610,822
<NET-CHANGE-FROM-OPS>                             7,088,069
<EQUALIZATION>                                            0
<DISTRIBUTIONS-OF-INCOME>                                 0
<DISTRIBUTIONS-OF-GAINS>                                  0
<DISTRIBUTIONS-OTHER>                                46,896
<NUMBER-OF-SHARES-SOLD>                           4,105,195
<NUMBER-OF-SHARES-REDEEMED>                         548,712
<SHARES-REINVESTED>                                     771
<NET-CHANGE-IN-ASSETS>                          306,007,635
<ACCUMULATED-NII-PRIOR>                                   0
<ACCUMULATED-GAINS-PRIOR>                                 0
<OVERDISTRIB-NII-PRIOR>                                   0
<OVERDIST-NET-GAINS-PRIOR>                                0
<GROSS-ADVISORY-FEES>                             1,340,606
<INTEREST-EXPENSE>                                        0
<GROSS-EXPENSE>                                   2,683,959
<AVERAGE-NET-ASSETS>                             45,757,168
<PER-SHARE-NAV-BEGIN>                                11.400
<PER-SHARE-NII>                                      (0.200)
<PER-SHARE-GAIN-APPREC>                               5.850
<PER-SHARE-DIVIDEND>                                  0.000
<PER-SHARE-DISTRIBUTIONS>                             0.000
<RETURNS-OF-CAPITAL>                                  0.020
<PER-SHARE-NAV-END>                                  17.130
<EXPENSE-RATIO>                                        1.99



</TABLE>