<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NAME> STATE STREET RESEARCH INCOME
<NUMBER> 2
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 484,136,991
<INVESTMENTS-AT-VALUE> 470,258,717
<RECEIVABLES> 9,727,575
<ASSETS-OTHER> 30,079,105
<OTHER-ITEMS-ASSETS> 100,847
<TOTAL-ASSETS> 510,166,244
<PAYABLE-FOR-SECURITIES> 22,207,609
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 30,819,466
<TOTAL-LIABILITIES> 53,027,075
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 476,065,769
<SHARES-COMMON-STOCK> 37,845,637
<SHARES-COMMON-PRIOR> 40,899,707
<ACCUMULATED-NII-CURRENT> 15,772,078
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (20,916,760)
<ACCUM-APPREC-OR-DEPREC> (13,781,918)
<NET-ASSETS> 457,139,169
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 16,278,990
<OTHER-INCOME> 0
<EXPENSES-NET> 875,173
<NET-INVESTMENT-INCOME> 15,403,817
<REALIZED-GAINS-CURRENT> (10,258,280)
<APPREC-INCREASE-CURRENT> 10,064,835
<NET-CHANGE-FROM-OPS> 15,210,372
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 620,577
<NUMBER-OF-SHARES-REDEEMED> 3,674,647
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (20,740,530)
<ACCUMULATED-NII-PRIOR> 368,262
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> (10,658,480)
<GROSS-ADVISORY-FEES> 746,649
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 875,173
<AVERAGE-NET-ASSETS> 460,040,956
<PER-SHARE-NAV-BEGIN> 11.68
<PER-SHARE-NII> 0.41
<PER-SHARE-GAIN-APPREC> (0.01)
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 12.08
<EXPENSE-RATIO> 0.004
</TABLE>
