WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000872649
<NAME> LOOMIS SAYLES & COMPANY, L.P.
<SERIES>
<NUMBER> 102
<NAME> LOOMIS SAYLES WORLDWIDE FUND, RETAIL
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 9,690,581
<INVESTMENTS-AT-VALUE> 10,984,225
<RECEIVABLES> 457,063
<ASSETS-OTHER> 49,294
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 11,490,582
<PAYABLE-FOR-SECURITIES> 234,742
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 247,787
<TOTAL-LIABILITIES> 482,529
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 7,742,100
<SHARES-COMMON-STOCK> 26,081
<SHARES-COMMON-PRIOR> 13,513
<ACCUMULATED-NII-CURRENT> 61,089
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,911,315
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,293,549
<NET-ASSETS> 390,256
<DIVIDEND-INCOME> 10,651
<INTEREST-INCOME> 183,623
<OTHER-INCOME> 0
<EXPENSES-NET> (43,894)
<NET-INVESTMENT-INCOME> 150,380
<REALIZED-GAINS-CURRENT> 1,998,433
<APPREC-INCREASE-CURRENT> 1,558,864
<NET-CHANGE-FROM-OPS> 3,707,677
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (5,792)
<DISTRIBUTIONS-OF-GAINS> (5,908)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 15,892
<NUMBER-OF-SHARES-REDEEMED> (4,313)
<SHARES-REINVESTED> 989
<NET-CHANGE-IN-ASSETS> 4,636,104
<ACCUMULATED-NII-PRIOR> 215,169
<ACCUMULATED-GAINS-PRIOR> 202,022
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 32,730
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 125,763
<AVERAGE-NET-ASSETS> 203,080
<PER-SHARE-NAV-BEGIN> 10.25
<PER-SHARE-NII> 0.21
<PER-SHARE-GAIN-APPREC> 5.42
<PER-SHARE-DIVIDEND> (0.45)
<PER-SHARE-DISTRIBUTIONS> (0.47)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.96
<EXPENSE-RATIO> 1.25
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
