<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 041
<NAME> 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> 12,110,248
<INVESTMENTS-AT-VALUE> 11,990,871
<RECEIVABLES> 1,810,638
<ASSETS-OTHER> 37,248
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 13,838,757
<PAYABLE-FOR-SECURITIES> 5,219,737
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 0
<TOTAL-LIABILITIES> 5,219,737
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 8,854,943
<SHARES-COMMON-STOCK> 854,515
<SHARES-COMMON-PRIOR> 826,290
<ACCUMULATED-NII-CURRENT> 275,885
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (392,431)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (119,377)
<NET-ASSETS> 8,619,020
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 297,113
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 297,113
<REALIZED-GAINS-CURRENT> (190,778)
<APPREC-INCREASE-CURRENT> 52,948
<NET-CHANGE-FROM-OPS> 159,283
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (530,891)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10,165
<NUMBER-OF-SHARES-REDEEMED> 35,837
<SHARES-REINVESTED> 53,897
<NET-CHANGE-IN-ASSETS> (93,720)
<ACCUMULATED-NII-PRIOR> 509,663
<ACCUMULATED-GAINS-PRIOR> (201,653)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 21,529
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7,364
<AVERAGE-NET-ASSETS> 8,611,610
<PER-SHARE-NAV-BEGIN> 10.54
<PER-SHARE-NII> .35
<PER-SHARE-GAIN-APPREC> (0.16)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.64)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.09
<EXPENSE-RATIO> 0
</TABLE>
