<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 021
<NAME> State Street Research Core Plus Fixed Income - Class I
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JAN-31-2001
<PERIOD-START> FEB-01-2000
<PERIOD-END> JUL-31-2000
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</TABLE>
