<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000810271
<NAME> Smith Barney International Aggressive Growth Fund
<SERIES>
<NUMBER>004
<NAME>Smith Barney Investment Series
<S> <C>
<PERIOD-TYPE> Year
<FISCAL-YEAR-END> Oct-31-2001
<PERIOD-END> Oct-31-2000
<INVESTMENTS-AT-COST> 169,730,314
<INVESTMENTS-AT-VALUE> 217,410,898
<RECEIVABLES> 1,933,257
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 681,052
<TOTAL-LIABILITIES> 681,052
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 174,726,676
<SHARES-COMMON-STOCK> 6,901
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3,733,539)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 47,678,754
<NET-ASSETS> 218,671,891
<DIVIDEND-INCOME> 576,560
<INTEREST-INCOME> 320,919
<OTHER-INCOME> 0
<EXPENSES-NET> 4,234,314
<NET-INVESTMENT-INCOME> (3,336,835)
<REALIZED-GAINS-CURRENT> (3,721,585)
<APPREC-INCREASE-CURRENT> 11,708,804
<NET-CHANGE-FROM-OPS> 4,650,384
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 84,861
<DISTRIBUTIONS-OTHER> 118
<NUMBER-OF-SHARES-SOLD> 6,901
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 135,915,973
<ACCUMULATED-NII-PRIOR> 0
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<INTEREST-EXPENSE> 0
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<AVERAGE-NET-ASSETS> 135,842
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<PER-SHARE-NII> (0.110)
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<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 41.570
<EXPENSE-RATIO> 2.25
</TABLE>
