<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT IVNESTMENT TRUST, INC.
<SERIES>
<NUMBER> 061
<NAME> STRATEGIC CORE FIXED INCOME SERIES - CLASS Y
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-2000
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 2,957,069
<INVESTMENTS-AT-VALUE> 2,922,640
<RECEIVABLES> 459,800
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 3,382,440
<PAYABLE-FOR-SECURITIES> 1,239,546
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 0
<TOTAL-LIABILITIES> 1,239,546
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2,211,541
<SHARES-COMMON-STOCK> 221,974
<SHARES-COMMON-PRIOR> 207,508
<ACCUMULATED-NII-CURRENT> 66,884
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (101,102)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (34,429)
<NET-ASSETS> 2,142,894
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 73,853
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 73,853
<REALIZED-GAINS-CURRENT> (43,550)
<APPREC-INCREASE-CURRENT> 9,972
<NET-CHANGE-FROM-OPS> 40,275
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 136,416
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 14,466
<NET-CHANGE-IN-ASSETS> 40,271
<ACCUMULATED-NII-PRIOR> 129,447
<ACCUMULATED-GAINS-PRIOR> (57,552)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5,291
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7,806
<AVERAGE-NET-ASSETS> 2,116,399
<PER-SHARE-NAV-BEGIN> 10.13
<PER-SHARE-NII> 0.34
<PER-SHARE-GAIN-APPREC> (0.16)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.66)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.65
<EXPENSE-RATIO> 0
</TABLE>
