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SIGNATURE JOSEPH VAN DYKE
TITLE ASSISTANT TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<NAME> LORD ABBETT SECURITIES TRUST
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<CIK> 0000898031
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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<NAME> LORD ABBETT SECURITIES TRUST
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<PER-SHARE-NAV-END> 14.93
<EXPENSE-RATIO> 1.05
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 023
<NAME> INTERNATIONAL SERIES - CLASS C
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<PERIOD-END> APR-30-1999
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<NUMBER-OF-SHARES-SOLD> 1,829,517
<NUMBER-OF-SHARES-REDEEMED> (1,581,385)
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<NET-CHANGE-IN-ASSETS> 58,574,347
<ACCUMULATED-NII-PRIOR> 721,661
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<GROSS-ADVISORY-FEES> 666,190
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<GROSS-EXPENSE> 1,299,411
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<PER-SHARE-NAV-END> 14.92
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 024
<NAME> INTERNATIONAL SERIES - CLASS P
<S> <C>
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<FISCAL-YEAR-END> OCT-31-1999
<PERIOD-START> MAR-09-1999
<PERIOD-END> APR-30-1999
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<NUMBER-OF-SHARES-SOLD> 86
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<NET-CHANGE-IN-ASSETS> 58,574,347
<ACCUMULATED-NII-PRIOR> 721,661
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<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 666,190
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<GROSS-EXPENSE> 1,299,411
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<EXPENSE-RATIO> 0.16
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 025
<NAME> INTERNATIONAL SERIES - CLASS Y
<S> <C>
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<FISCAL-YEAR-END> OCT-31-1999
<PERIOD-END> APR-30-1999
<INVESTMENTS-AT-COST> 177,992,905
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<ACCUMULATED-NII-PRIOR> 721,661
<ACCUMULATED-GAINS-PRIOR> 273,862
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<GROSS-ADVISORY-FEES> 666,190
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 031
<NAME> WORLD-BOND DEBENTURE - CLASS A
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 032
<NAME> WORLD-BOND DEBENTURE - CLASS B
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 033
<NAME> WORLD-BOND DEBENTURE - CLASS C
<S> <C>
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<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.94
<EXPENSE-RATIO> .68
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 051
<NAME> LARGE-CAP INTERNATIONAL - CLASS A
<S> <C>
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000898031
<NAME> LORD ABBETT SECURITIES TRUST
<SERIES>
<NUMBER> 052
<NAME> LAREG-CAP INTERNATIONAL - CLASS B
<S> <C>
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<NUMBER-OF-SHARES-SOLD> 110
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<NAME> LORD ABBETT SECURITIES TRUST
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