[ARTICLE] 6
[CIK] 0000720506
[NAME] SMITH BARNEY AGGRESSIVE GROWTH FUND INC. CLASS B
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          AUG-31-1999
[PERIOD-END]                               FEB-28-1999
[INVESTMENTS-AT-COST]                      526,837,740
[INVESTMENTS-AT-VALUE]                   1,181,941,269
[RECEIVABLES]                                1,795,178
[ASSETS-OTHER]                             156,100,048
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                           1,339,836,495
[PAYABLE-FOR-SECURITIES]                   159,766,400
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                    1,585,956
[TOTAL-LIABILITIES]                        161,352,356
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   519,085,569
[SHARES-COMMON-STOCK]                        6,032,929
[SHARES-COMMON-PRIOR]                        5,784,027
[ACCUMULATED-NII-CURRENT]                  (5,671,097)
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      9,966,138
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   655,103,529
[NET-ASSETS]                             1,178,484,139
[DIVIDEND-INCOME]                              444,448
[INTEREST-INCOME]                              470,614
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               6,584,236
[NET-INVESTMENT-INCOME]                    (5,669,174)
[REALIZED-GAINS-CURRENT]                     9,965,703
[APPREC-INCREASE-CURRENT]                  406,960,125
[NET-CHANGE-FROM-OPS]                      411,256,654
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                     5,063,414
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      3,017,114
[NUMBER-OF-SHARES-REDEEMED]                  2,883,728
[SHARES-REINVESTED]                            115,516
[NET-CHANGE-IN-ASSETS]                     499,157,801
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                   18,186,090
[OVERDISTRIB-NII-PRIOR]                        (1,923)
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        2,814,258
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              6,584,236
[AVERAGE-NET-ASSETS]                       255,967,553
[PER-SHARE-NAV-BEGIN]                            32.12
[PER-SHARE-NII]                                 (0.39)
[PER-SHARE-GAIN-APPREC]                          19.40
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                        00.88
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              50.25
[EXPENSE-RATIO]                                  02.00
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>