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> 201
<NAME> LOOMIS SAYLES GLOBAL TECHNOLOGY FUND, INSTITUTIONAL
<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> 15751879
<INVESTMENTS-AT-VALUE> 15608149
<RECEIVABLES> 1003619
<ASSETS-OTHER> 48199
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 16659967
<PAYABLE-FOR-SECURITIES> 1022397
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 406810
<TOTAL-LIABILITIES> 1429207
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 14182534
<SHARES-COMMON-STOCK> 561120
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (13259)
<ACCUMULATED-NET-GAINS> 1205198
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (143713)
<NET-ASSETS> 15230760
<DIVIDEND-INCOME> 1238
<INTEREST-INCOME> 10668
<OTHER-INCOME> 0
<EXPENSES-NET> (25165)
<NET-INVESTMENT-INCOME> (13259)
<REALIZED-GAINS-CURRENT> 1205198
<APPREC-INCREASE-CURRENT> (143713)
<NET-CHANGE-FROM-OPS> 1048226
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 639302
<NUMBER-OF-SHARES-REDEEMED> (78182)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 15230760
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15563
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 48607
<AVERAGE-NET-ASSETS> 5050591
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> (0.01)
<PER-SHARE-GAIN-APPREC> 4.12
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.11
<EXPENSE-RATIO> 1.50
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
