<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 000
<NAME> JOHN HANCOCK INCOME SECURITIES TRUST
<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> 167,272,624
<INVESTMENTS-AT-VALUE> 165,172,822
<RECEIVABLES> 8,918,852
<ASSETS-OTHER> 12,518
<OTHER-ITEMS-ASSETS> 806
<TOTAL-ASSETS> 174,104,998
<PAYABLE-FOR-SECURITIES> 8,666,861
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 614,321
<TOTAL-LIABILITIES> 9,281,182
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 172,632,080
<SHARES-COMMON-STOCK> 10,750,976
<SHARES-COMMON-PRIOR> 10,726,230
<ACCUMULATED-NII-CURRENT> 62,462
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (5,770,924)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (2,099,802)
<NET-ASSETS> 164,823,816
<DIVIDEND-INCOME> 90,474
<INTEREST-INCOME> 6,352,595
<OTHER-INCOME> 0
<EXPENSES-NET> 678,337
<NET-INVESTMENT-INCOME> 5,764,732
<REALIZED-GAINS-CURRENT> (2,709,017)
<APPREC-INCREASE-CURRENT> 2,372,487
<NET-CHANGE-FROM-OPS> 5,428,202
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 5,744,925
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 24,746
<NET-CHANGE-IN-ASSETS> 4,648
<ACCUMULATED-NII-PRIOR> 42,655
<ACCUMULATED-GAINS-PRIOR> (3,061,907)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 515,597
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 678,337
<AVERAGE-NET-ASSETS> 164,985,113
<PER-SHARE-NAV-BEGIN> 15.37
<PER-SHARE-NII> 0.54
<PER-SHARE-GAIN-APPREC> (0.04)
<PER-SHARE-DIVIDEND> (0.54)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.33
<EXPENSE-RATIO> 0.83
</TABLE>
