<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 013
<NAME> JOHN HANCOCK STRATEGIC INCOME FUND
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAY-31-2000
<PERIOD-START> JUN-01-1999
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 1,168,969,489
<INVESTMENTS-AT-VALUE> 1,077,969,701
<RECEIVABLES> 35,318,609
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<OTHER-ITEMS-LIABILITIES> 2,232,547
<TOTAL-LIABILITIES> 2,232,547
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,218,817,447
<SHARES-COMMON-STOCK> 5,191,838
<SHARES-COMMON-PRIOR> 3,007,588
<ACCUMULATED-NII-CURRENT> 9,277,711
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<ACCUM-APPREC-OR-DEPREC> (87,303,786)
<NET-ASSETS> 1,111,118,195
<DIVIDEND-INCOME> 5,839,766
<INTEREST-INCOME> 99,688,972
<OTHER-INCOME> 0
<EXPENSES-NET> 15,148,381
<NET-INVESTMENT-INCOME> 90,380,357
<REALIZED-GAINS-CURRENT> (9,739,102)
<APPREC-INCREASE-CURRENT> (68,566,224)
<NET-CHANGE-FROM-OPS> 12,075,031
<EQUALIZATION> 0
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<NUMBER-OF-SHARES-REDEEMED> 1,345,356
<SHARES-REINVESTED> 174,327
<NET-CHANGE-IN-ASSETS> (71,717,951)
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<PER-SHARE-NAV-BEGIN> 7.46
<PER-SHARE-NII> 0.53
<PER-SHARE-GAIN-APPREC> (0.49)
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</TABLE>
