<PAGE> PAGE 1
000 B000000 11/30/98
000 C000000 0000911507
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 U
001 A000000 LORD ABBETT INVESTMENT TRUST
001 B000000 811-7988
001 C000000 2128481870
002 A000000 767 FIFTH AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10153
002 D020000 0101
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 4
007 C010100 1
007 C020100 US GOVERNMENT SECURITIES SERIES
007 C030100 N
007 C010200 2
007 C020200 LIMITED DURATION US GOV'T SECURITIES SERIES
007 C030200 N
007 C010300 3
007 C020300 BALANCED SERIES
007 C030300 N
007 C010400 4
007 C020400 CORE SERIES
007 C030400 N
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A00AA01 LORD, ABBETT & CO.
008 B00AA01 A
008 C00AA01 801-6997
008 D01AA01 NEW YORK
008 D02AA01 NY
008 D03AA01 10153
008 D04AA01 0101
011 A00AA01 LORD ABBETT DISTRIBUTOR LLC
011 B00AA01 8-216
011 C01AA01 NEW YORK
<PAGE> PAGE 2
011 C02AA01 NY
011 C03AA01 10153
011 C04AA01 0101
012 A00AA01 DST SYSTEMS, INC.
012 B00AA01 84-448
012 C01AA01 KANSAS CITY
012 C02AA01 MO
012 C03AA01 64141
013 A00AA01 DELOITTE & TOUCHE LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10048
015 A00AA01 THE BANK OF NEW YORK
015 B00AA01 C
015 C01AA01 NEW YORK
015 C02AA01 NY
015 C03AA01 10015
015 E01AA01 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 34
019 C00AA00 LORDABBETT
020 A000001 M.M.L. INVESTORS SERVICE, INC.
020 B000001 04-2746212
020 C000001 5
020 A000002 PAINEWEBBER INC.
020 B000002 13-2638166
020 C000002 1
020 A000003 PERSHING DIV. OF DONALDSON,LUFKIN & JENRETTE
020 B000003 13-2741729
020 C000003 1
020 A000004 PRUDENTIAL SECURITIES INC.
020 B000004 22-2347336
020 C000004 1
020 A000005 SMITH BARNEY INC.
020 B000005 13-1912900
020 C000005 1
020 A000006 FACTSET DATA SYSTEM
020 B000006 13-2953224
020 C000006 1
020 A000007 EDWARD D. JONES & CO.
020 B000007 43-0345811
020 C000007 1
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 12
022 A000001 FUJI SECURITIES INC.
022 B000001 36-2880742
022 C000001 20264158
022 D000001 18517047
<PAGE> PAGE 3
022 A000002 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000002 13-5674085
022 C000002 3876919
022 D000002 3882367
022 A000003 DEAN WITTER REYNOLDS, INC.
022 B000003 94-1671384
022 C000003 3412386
022 D000003 3284009
022 A000004 SALOMON BROTHERS INC.
022 B000004 13-3082694
022 C000004 2433921
022 D000004 2238790
022 A000005 NOMURA SECURITIES INTERNATIONAL INC.
022 B000005 13-2642206
022 C000005 2169769
022 D000005 2123540
022 A000006 LEHMAN BROTHERS, INC.
022 B000006 13-2518466
022 C000006 1282776
022 D000006 1372158
022 A000007 CREDIT SUISSE FIRST BOSTON CORP.
022 B000007 13-5659485
022 C000007 996316
022 D000007 1240550
022 A000008 FIRST TENNESSEE DISCOUNT BROKERAGE INC.
022 B000008 62-0201385
022 C000008 1058516
022 D000008 1056462
022 A000009 UTENDAUL CAPITAL PARTNERS, LP
022 B000009 13-3667000
022 C000009 1162292
022 D000009 72469
022 A000010 GOLDMAN SACHS & CO.
022 B000010 13-5108880
022 C000010 445089
022 D000010 476024
023 C000000 41964977
023 D000000 42304596
024 00AA00 N
025 D00AA01 0
025 D00AA02 0
025 D00AA03 0
025 D00AA04 0
025 D00AA05 0
025 D00AA06 0
025 D00AA07 0
025 D00AA08 0
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
<PAGE> PAGE 4
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
027 000000 Y
037 00AA00 N
038 00AA00 0
039 00AA00 N
040 00AA00 Y
041 00AA00 Y
077 A000000 Y
077 B000000 Y
078 000000 N
080 A00AA00 ICI MUTUAL INSURANCE CO.
080 C00AA00 15000
081 A00AA00 Y
081 B00AA00 33
082 A00AA00 N
082 B00AA00 0
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
028 A010100 7717
028 A020100 5067
028 A030100 0
028 A040100 57113
028 B010100 8204
028 B020100 5669
028 B030100 0
028 B040100 36907
028 C010100 13711
028 C020100 5628
028 C030100 0
028 C040100 32692
028 D010100 20129
028 D020100 5566
<PAGE> PAGE 5
028 D030100 0
028 D040100 28965
028 E010100 23985
028 E020100 5598
028 E030100 0
028 E040100 26611
028 F010100 12371
028 F020100 5625
028 F030100 0
028 F040100 29803
028 G010100 86117
028 G020100 33153
028 G030100 0
028 G040100 212091
028 H000100 59011
029 000100 Y
030 A000100 1130
030 B000100 4.75
030 C000100 0.00
031 A000100 142
031 B000100 0
032 000100 988
033 000100 0
034 000100 Y
035 000100 142
036 A000100 Y
036 B000100 0
042 A000100 0
042 B000100 0
042 C000100 0
042 D000100 100
042 E000100 0
042 F000100 0
042 G000100 0
042 H000100 0
043 000100 6819
044 000100 0
062 A000100 Y
062 B000100 0.0
062 C000100 9.3
062 D000100 0.0
062 E000100 0.0
062 F000100 0.0
062 G000100 0.0
062 H000100 0.0
062 I000100 0.0
062 J000100 0.0
062 K000100 0.0
062 L000100 4.1
062 M000100 18.3
062 N000100 86.6
<PAGE> PAGE 6
062 O000100 0.0
062 P000100 0.0
062 Q000100 11.5
062 R000100 0.0
063 A000100 0
063 B000100 10.2
064 A000100 N
064 B000100 N
071 A000100 8280081
071 B000100 8822213
071 C000100 2071880
071 D000100 400
072 A000100 12
072 B000100 148672
072 C000100 0
072 D000100 0
072 E000100 0
072 F000100 10287
072 G000100 0
072 H000100 0
072 I000100 2761
072 J000100 0
072 K000100 0
072 L000100 377
072 M000100 49
072 N000100 60
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 96
072 S000100 48
072 T000100 6819
072 U000100 0
072 V000100 0
072 W000100 106
072 X000100 20602
072 Y000100 353
072 Z000100 128423
072AA000100 86492
072BB000100 44044
072CC010100 4103
072CC020100 0
072DD010100 121519
072DD020100 9774
072EE000100 0
073 A010100 0.1722
073 A020100 0.1530
073 B000100 0.0000
073 C000100 0.1530
074 A000100 186
074 B000100 0
<PAGE> PAGE 7
074 C000100 377929
074 D000100 2215477
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 484465
074 K000100 0
074 L000100 10550
074 M000100 14
074 N000100 3088621
074 O000100 1098356
074 P000100 0
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 87861
074 S000100 0
074 T000100 1902404
074 U010100 648149
074 U020100 10
074 V010100 2.64
074 V020100 2.64
074 W000100 0.0000
074 X000100 64153
074 Y000100 486335
075 A000100 0
075 B000100 2023473
076 000100 0.00
028 A010200 1278
028 A020200 24
028 A030200 0
028 A040200 942
028 B010200 506
028 B020200 28
028 B030200 0
028 B040200 940
028 C010200 1864
028 C020200 28
028 C030200 0
028 C040200 1153
028 D010200 860
028 D020200 27
028 D030200 0
028 D040200 614
028 E010200 1561
028 E020200 30
028 E030200 0
028 E040200 1248
<PAGE> PAGE 8
028 F010200 900
028 F020200 30
028 F030200 0
028 F040200 261
028 G010200 6969
028 G020200 167
028 G030200 0
028 G040200 5158
028 H000200 3962
029 000200 Y
030 A000200 98
030 B000200 3.00
030 C000200 1.00
031 A000200 14
031 B000200 0
032 000200 85
033 000200 0
034 000200 Y
035 000200 2
036 A000200 Y
036 B000200 0
042 A000200 0
042 B000200 0
042 C000200 0
042 D000200 100
042 E000200 0
042 F000200 0
042 G000200 0
042 H000200 0
043 000200 38
044 000200 0
062 A000200 Y
062 B000200 83.0
062 C000200 18.6
062 D000200 0.0
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 0.0
062 M000200 14.0
062 N000200 47.7
062 O000200 0.0
062 P000200 0.0
062 Q000200 23.4
062 R000200 0.0
063 A000200 0
063 B000200 3.8
<PAGE> PAGE 9
064 A000200 N
064 B000200 N
071 A000200 23114
071 B000200 26078
071 C000200 8674
071 D000200 266
072 A000200 12
072 B000200 605
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 48
072 G000200 0
072 H000200 0
072 I000200 23
072 J000200 0
072 K000200 0
072 L000200 2
072 M000200 0
072 N000200 0
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 10
072 S000200 2
072 T000200 38
072 U000200 0
072 V000200 0
072 W000200 7
072 X000200 130
072 Y000200 49
072 Z000200 524
072AA000200 105
072BB000200 249
072CC010200 244
072CC020200 0
072DD010200 980
072DD020200 570
072EE000200 0
073 A010200 0.2429
073 A020200 0.1984
073 B000200 0.0000
073 C000200 0.0000
074 A000200 185
074 B000200 0
074 C000200 2042
074 D000200 11176
074 E000200 0
074 F000200 0
074 G000200 0
074 H000200 0
<PAGE> PAGE 10
074 I000200 0
074 J000200 3000
074 K000200 0
074 L000200 241
074 M000200 0
074 N000200 16644
074 O000200 5593
074 P000200 0
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 52
074 S000200 0
074 T000200 10999
074 U010200 1279
074 U020200 1185
074 V010200 4.46
074 V020200 4.47
074 W000200 0.0000
074 X000200 296
074 Y000200 2244
075 A000200 0
075 B000200 9606
076 000200 0.00
028 A010300 4716
028 A020300 96
028 A030300 0
028 A040300 250
028 B010300 3930
028 B020300 123
028 B030300 0
028 B040300 253
028 C010300 3179
028 C020300 134
028 C030300 0
028 C040300 520
028 D010300 3644
028 D020300 142
028 D030300 0
028 D040300 630
028 E010300 5997
028 E020300 158
028 E030300 0
028 E040300 925
028 F010300 4513
028 F020300 178
028 F030300 0
028 F040300 458
028 G010300 25979
028 G020300 831
<PAGE> PAGE 11
028 G030300 0
028 G040300 3036
028 H000300 18281
029 000300 Y
030 A000300 914
030 B000300 4.75
030 C000300 0.00
031 A000300 123
031 B000300 0
032 000300 790
033 000300 0
034 000300 Y
035 000300 6
036 A000300 Y
036 B000300 0
042 A000300 0
042 B000300 0
042 C000300 0
042 D000300 100
042 E000300 0
042 F000300 0
042 G000300 0
042 H000300 0
043 000300 64
044 000300 0
062 A000300 N
062 B000300 0.0
062 C000300 0.0
062 D000300 0.0
062 E000300 0.0
062 F000300 0.0
062 G000300 0.0
062 H000300 0.0
062 I000300 0.0
062 J000300 0.0
062 K000300 0.0
062 L000300 0.0
062 M000300 0.0
062 N000300 0.0
062 O000300 0.0
062 P000300 0.0
062 Q000300 0.0
062 R000300 0.0
063 A000300 0
063 B000300 0.0
071 A000300 82622
071 B000300 43312
071 C000300 39775
071 D000300 108
072 A000300 12
072 B000300 1298
<PAGE> PAGE 12
072 C000300 2379
072 D000300 0
072 E000300 0
072 F000300 172
072 G000300 0
072 H000300 0
072 I000300 56
072 J000300 0
072 K000300 0
072 L000300 4
072 M000300 0
072 N000300 27
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 8
072 S000300 1
072 T000300 64
072 U000300 6
072 V000300 0
072 W000300 1
072 X000300 338
072 Y000300 186
072 Z000300 3525
072AA000300 3626
072BB000300 535
072CC010300 0
072CC020300 3715
072DD010300 1149
072DD020300 156
072EE000300 570
073 A010300 0.5155
073 A020300 0.2485
073 B000300 0.3500
073 C000300 0.3885
074 A000300 0
074 B000300 0
074 C000300 127
074 D000300 0
074 E000300 0
074 F000300 0
074 G000300 0
074 H000300 0
074 I000300 57099
074 J000300 0
074 K000300 0
074 L000300 447
074 M000300 146
074 N000300 57819
074 O000300 121
074 P000300 0
<PAGE> PAGE 13
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 23
074 S000300 0
074 T000300 57675
074 U010300 3471
074 U020300 397
074 V010300 12.87
074 V020300 12.86
074 W000300 0.0000
074 X000300 2861
074 Y000300 0
075 A000300 0
075 B000300 34387
076 000300 0.00
028 A010400 0
028 A020400 0
028 A030400 0
028 A040400 0
028 B010400 0
028 B020400 0
028 B030400 0
028 B040400 0
028 C010400 0
028 C020400 0
028 C030400 0
028 C040400 0
028 D010400 0
028 D020400 0
028 D030400 0
028 D040400 0
028 E010400 0
028 E020400 0
028 E030400 0
028 E040400 0
028 F010400 24
028 F020400 0
028 F030400 0
028 F040400 0
028 G010400 24
028 G020400 0
028 G030400 0
028 G040400 0
028 H000400 0
029 000400 N
030 A000400 0
030 B000400 0.00
030 C000400 0.00
031 A000400 0
<PAGE> PAGE 14
031 B000400 0
032 000400 0
033 000400 0
034 000400 N
035 000400 0
036 B000400 0
062 A000400 Y
062 B000400 0.0
062 C000400 6.9
062 D000400 0.0
062 E000400 0.0
062 F000400 0.0
062 G000400 0.0
062 H000400 0.0
062 I000400 0.0
062 J000400 0.0
062 K000400 0.0
062 L000400 0.0
062 M000400 17.1
062 N000400 63.0
062 O000400 0.0
062 P000400 0.0
062 Q000400 41.9
062 R000400 0.0
063 A000400 0
063 B000400 8.4
064 A000400 N
064 B000400 N
071 A000400 22885
071 B000400 18619
071 C000400 4727
071 D000400 394
072 A000400 12
072 B000400 264
072 C000400 0
072 D000400 0
072 E000400 0
072 F000400 21
072 G000400 0
072 H000400 0
072 I000400 0
072 J000400 0
072 K000400 0
072 L000400 0
072 M000400 0
072 N000400 0
072 O000400 0
072 P000400 0
072 Q000400 0
072 R000400 4
072 S000400 2
<PAGE> PAGE 15
072 T000400 0
072 U000400 0
072 V000400 0
072 W000400 2
072 X000400 29
072 Y000400 29
072 Z000400 264
072AA000400 32
072BB000400 10
072CC010400 65
072CC020400 0
072DD010400 0
072DD020400 0
072EE000400 0
073 A010400 0.0000
073 A020400 0.0000
073 B000400 0.0000
073 C000400 0.0000
074 A000400 11
074 B000400 0
074 C000400 267
074 D000400 5785
074 E000400 0
074 F000400 0
074 G000400 0
074 H000400 0
074 I000400 0
074 J000400 1715
074 K000400 0
074 L000400 33
074 M000400 0
074 N000400 7811
074 O000400 3111
074 P000400 0
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 6
074 S000400 0
074 T000400 4694
074 U010400 428
074 U020400 0
074 V010400 10.97
074 V020400 0.00
074 W000400 0.0000
074 X000400 13
074 Y000400 1539
075 A000400 0
075 B000400 4302
076 000400 0.00
SIGNATURE JOSEPH VAN DYKE
TITLE ASSISTANT TREASURER
<PAGE>
INDEPENDENT AUDITORS' REPORT
To the Board of Trustees
Lord Abbett Investment Trust:
In planning and performing our audit of the financial statements of Lord Abbett
Investment Trust (the "Trust") (including the U.S. Government Securities Series,
Limited Duration U.S. Government Securities Series, Balanced Series, and Core
Series) for the year ended November 30, 1998 (the period December 10, 1997,
Commencement of Operations, through November 30, 1998 for Core Series) (on which
we have issued our reports dated January 8, 1999), we considered its internal
control, including control activities for safeguarding securities, in order to
determine our auditing procedures for the purpose of expressing our opinion on
the financial statements and to comply with the requirements of Form N-SAR, and
not to provide assurance on the Trust's internal control.
The management of the Trust is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use, or disposition.
Because of inherent limitations in any internal control, misstatements due to
errors or fraud may occur and not be detected. Also, projections of any
evaluation of internal control to future periods are subject to the risk that
the internal control may become inadequate because of changes in conditions, or
that the degree of compliance with policies and procedures may deteriorate.
Our consideration of the Trust's internal control would not necessarily disclose
all matters in the internal control that might be material weaknesses under
standards established by the American Institute of Certified Public Accountants.
A material weakness is a condition in which the design or operation of one or
more of the internal control components does not reduce to a relatively low
level the risk that misstatements caused by error or fraud in amounts that would
be material in relation to the financial statements being audited may occur and
not be detected within a timely period by employees in the normal course of
performing their assigned functions. However, we noted no matters involving the
Trust's internal control and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined above as of
November 30, 1998.
This report is intended solely for the information and use of management, the
Board of Trustees of Lord Abbett Investment Trust, and the Securities and
Exchange Commission and is not intended to be and should not be used by anyone
other than these specified parties.
January 8, 1999
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 031
<NAME> BALANCED SERIES - CLASS A
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 58675664
<INVESTMENTS-AT-VALUE> 57098108
<RECEIVABLES> 446530
<ASSETS-OTHER> 128385
<OTHER-ITEMS-ASSETS> 145870
<TOTAL-ASSETS> 57818893
<PAYABLE-FOR-SECURITIES> 121360
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 22828
<TOTAL-LIABILITIES> 144188
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 53955843
<SHARES-COMMON-STOCK> 3471843
<SHARES-COMMON-PRIOR> 1340258
<ACCUMULATED-NII-CURRENT> 50780
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3090225
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1577556)
<NET-ASSETS> 57674705
<DIVIDEND-INCOME> 1048447
<INTEREST-INCOME> 218042
<OTHER-INCOME> 0
<EXPENSES-NET> 72834
<NET-INVESTMENT-INCOME> 1193655
<REALIZED-GAINS-CURRENT> 3090748
<APPREC-INCREASE-CURRENT> (3714929)
<NET-CHANGE-FROM-OPS> 2900612
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1149118
<DISTRIBUTIONS-OF-GAINS> 482400
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2402438
<NUMBER-OF-SHARES-REDEEMED> 388736
<SHARES-REINVESTED> 117883
<NET-CHANGE-IN-ASSETS> 37334278
<ACCUMULATED-NII-PRIOR> 28799
<ACCUMULATED-GAINS-PRIOR> 570450
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 139407
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 210903
<AVERAGE-NET-ASSETS> 27881363
<PER-SHARE-NAV-BEGIN> 12.80
<PER-SHARE-NII> .54
<PER-SHARE-GAIN-APPREC> .40
<PER-SHARE-DIVIDEND> .52
<PER-SHARE-DISTRIBUTIONS> .35
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.87
<EXPENSE-RATIO> .26
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 032
<NAME> BALANCED SERIES - CLASS B
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> MAY-01-1998
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 58675664
<INVESTMENTS-AT-VALUE> 57098108
<RECEIVABLES> 446530
<ASSETS-OTHER> 128385
<OTHER-ITEMS-ASSETS> 145870
<TOTAL-ASSETS> 57818893
<PAYABLE-FOR-SECURITIES> 121360
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 22828
<TOTAL-LIABILITIES> 144188
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 53955843
<SHARES-COMMON-STOCK> 396867
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 3822
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3090225
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1577556)
<NET-ASSETS> 57674705
<DIVIDEND-INCOME> 51043
<INTEREST-INCOME> 226
<OTHER-INCOME> 0
<EXPENSES-NET> 11847
<NET-INVESTMENT-INCOME> 39422
<REALIZED-GAINS-CURRENT> 3090748
<APPREC-INCREASE-CURRENT> (3714929)
<NET-CHANGE-FROM-OPS> 2900612
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 35604
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 410635
<NUMBER-OF-SHARES-REDEEMED> 16357
<SHARES-REINVESTED> 2589
<NET-CHANGE-IN-ASSETS> 37334278
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5823
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 20102
<AVERAGE-NET-ASSETS> 1995654
<PER-SHARE-NAV-BEGIN> 13.14
<PER-SHARE-NII> .25
<PER-SHARE-GAIN-APPREC> .28
<PER-SHARE-DIVIDEND> .25
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.86
<EXPENSE-RATIO> .59
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 033
<NAME> BALANCED SERIES - CLASS C
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 58675664
<INVESTMENTS-AT-VALUE> 57098108
<RECEIVABLES> 446530
<ASSETS-OTHER> 128385
<OTHER-ITEMS-ASSETS> 145870
<TOTAL-ASSETS> 57818893
<PAYABLE-FOR-SECURITIES> 121360
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 22828
<TOTAL-LIABILITIES> 144188
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 53955843
<SHARES-COMMON-STOCK> 614958
<SHARES-COMMON-PRIOR> 249784
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 9445
<ACCUMULATED-NET-GAINS> 3090225
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1577556)
<NET-ASSETS> 57674705
<DIVIDEND-INCOME> 198814
<INTEREST-INCOME> 43089
<OTHER-INCOME> 0
<EXPENSES-NET> 67454
<NET-INVESTMENT-INCOME> 174449
<REALIZED-GAINS-CURRENT> 3090748
<APPREC-INCREASE-CURRENT> (3714929)
<NET-CHANGE-FROM-OPS> 2900612
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 156346
<DISTRIBUTIONS-OF-GAINS> 88565
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 417362
<NUMBER-OF-SHARES-REDEEMED> 70625
<SHARES-REINVESTED> 18437
<NET-CHANGE-IN-ASSETS> 37334278
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 570450
<OVERDISTRIB-NII-PRIOR> 12076
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 26906
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 110354
<AVERAGE-NET-ASSETS> 5381129
<PER-SHARE-NAV-BEGIN> 12.78
<PER-SHARE-NII> .41
<PER-SHARE-GAIN-APPREC> .40
<PER-SHARE-DIVIDEND> .39
<PER-SHARE-DISTRIBUTIONS> .35
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.85
<EXPENSE-RATIO> 1.25
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 021
<NAME> LIMITED DURATION US GOVERNMENT SERIES - CLASS A
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 11038890
<INVESTMENTS-AT-VALUE> 11318039
<RECEIVABLES> 3242216
<ASSETS-OTHER> 1899728
<OTHER-ITEMS-ASSETS> 185330
<TOTAL-ASSETS> 16645313
<PAYABLE-FOR-SECURITIES> 5593035
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 52472
<TOTAL-LIABILITIES> 5645507
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 12674972
<SHARES-COMMON-STOCK> 1078737
<SHARES-COMMON-PRIOR> 1098742
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 74415
<ACCUMULATED-NET-GAINS> (1744811)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 279148
<NET-ASSETS> 10999806
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 337782
<OTHER-INCOME> 0
<EXPENSES-NET> 24353
<NET-INVESTMENT-INCOME> 313429
<REALIZED-GAINS-CURRENT> 39648
<APPREC-INCREASE-CURRENT> 60289
<NET-CHANGE-FROM-OPS> 623837
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 292470
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1524406
<NUMBER-OF-SHARES-REDEEMED> 1392054
<SHARES-REINVESTED> 47643
<NET-CHANGE-IN-ASSETS> 723585
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (1784459)
<OVERDISTRIB-NII-PRIOR> 94187
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 26735
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 51450
<AVERAGE-NET-ASSETS> 5347032
<PER-SHARE-NAV-BEGIN> 4.40
<PER-SHARE-NII> .26
<PER-SHARE-GAIN-APPREC> .04
<PER-SHARE-DIVIDEND> .24
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 4.46
<EXPENSE-RATIO> .46
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 023
<NAME> LIMITED DURATION US GOVERNMENT SERIES - CLASS C
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 11038890
<INVESTMENTS-AT-VALUE> 11318039
<RECEIVABLES> 3242216
<ASSETS-OTHER> 1899728
<OTHER-ITEMS-ASSETS> 185330
<TOTAL-ASSETS> 16645313
<PAYABLE-FOR-SECURITIES> 5593035
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 52472
<TOTAL-LIABILITIES> 5645507
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 12674972
<SHARES-COMMON-STOCK> 1185415
<SHARES-COMMON-PRIOR> 1235919
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 125960
<ACCUMULATED-NET-GAINS> (1744811)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 279148
<NET-ASSETS> 10999806
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 267669
<OTHER-INCOME> 0
<EXPENSES-NET> 57167
<NET-INVESTMENT-INCOME> 210502
<REALIZED-GAINS-CURRENT> 39648
<APPREC-INCREASE-CURRENT> 60289
<NET-CHANGE-FROM-OPS> 623837
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 192017
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 709733
<NUMBER-OF-SHARES-REDEEMED> 785920
<SHARES-REINVESTED> 25683
<NET-CHANGE-IN-ASSETS> 723585
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (1784459)
<OVERDISTRIB-NII-PRIOR> 145555
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 21295
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 78962
<AVERAGE-NET-ASSETS> 4258808
<PER-SHARE-NAV-BEGIN> 4.40
<PER-SHARE-NII> .22
<PER-SHARE-GAIN-APPREC> .05
<PER-SHARE-DIVIDEND> .20
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 4.47
<EXPENSE-RATIO> 1.34
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 011
<NAME> US GOVERNMENT SECURITIES SERIES - CLASS A
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 2183428139
<INVESTMENTS-AT-VALUE> 2224340799
<RECEIVABLES> 495015832
<ASSETS-OTHER> 168136567
<OTHER-ITEMS-ASSETS> 13935
<TOTAL-ASSETS> 2887507133
<PAYABLE-FOR-SECURITIES> 971076125
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 14026753
<TOTAL-LIABILITIES> 985102878
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2425978692
<SHARES-COMMON-STOCK> 648149209
<SHARES-COMMON-PRIOR> 804678136
<ACCUMULATED-NII-CURRENT> 13097755
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (572619975)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 40912660
<NET-ASSETS> 1902404255
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 133910370
<OTHER-INCOME> 0
<EXPENSES-NET> 17211567
<NET-INVESTMENT-INCOME> 116698803
<REALIZED-GAINS-CURRENT> 42447914
<APPREC-INCREASE-CURRENT> 4102771
<NET-CHANGE-FROM-OPS> 174973519
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 121519231
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 31799161
<NUMBER-OF-SHARES-REDEEMED> 212324614
<SHARES-REINVESTED> 23996526
<NET-CHANGE-IN-ASSETS> (384007693)
<ACCUMULATED-NII-PRIOR> 17080469
<ACCUMULATED-GAINS-PRIOR> (615067889)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 9173347
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17555806
<AVERAGE-NET-ASSETS> 1834669495
<PER-SHARE-NAV-BEGIN> 2.59
<PER-SHARE-NII> .17
<PER-SHARE-GAIN-APPREC> .05
<PER-SHARE-DIVIDEND> .17
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.64
<EXPENSE-RATIO> .94
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 012
<NAME> U.S. GOVERNMENT SECURITIES SERIES - CLASS B
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 2183428139
<INVESTMENTS-AT-VALUE> 2224340799
<RECEIVABLES> 495015832
<ASSETS-OTHER> 168136567
<OTHER-ITEMS-ASSETS> 13935
<TOTAL-ASSETS> 2887507133
<PAYABLE-FOR-SECURITIES> 971076125
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 14026753
<TOTAL-LIABILITIES> 985102878
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2425978692
<SHARES-COMMON-STOCK> 11100263
<SHARES-COMMON-PRIOR> 5496872
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 113265
<ACCUMULATED-NET-GAINS> (572619975)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 40912660
<NET-ASSETS> 1902404255
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1309064
<OTHER-INCOME> 0
<EXPENSES-NET> 307596
<NET-INVESTMENT-INCOME> 1001468
<REALIZED-GAINS-CURRENT> 42447914
<APPREC-INCREASE-CURRENT> 4102771
<NET-CHANGE-FROM-OPS> 174973519
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1432091
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7509963
<NUMBER-OF-SHARES-REDEEMED> 2095473
<SHARES-REINVESTED> 188901
<NET-CHANGE-IN-ASSETS> (384007693)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (615067889)
<OVERDISTRIB-NII-PRIOR> 36856
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 93429
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 308272
<AVERAGE-NET-ASSETS> 18685855
<PER-SHARE-NAV-BEGIN> 2.58
<PER-SHARE-NII> .14
<PER-SHARE-GAIN-APPREC> .08
<PER-SHARE-DIVIDEND> .16
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.64
<EXPENSE-RATIO> 1.65
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 013
<NAME> U.S. GOVERNMENT SECURITIES SERIES - CLASS C
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-01-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 2183428139
<INVESTMENTS-AT-VALUE> 2224340799
<RECEIVABLES> 495015832
<ASSETS-OTHER> 168136567
<OTHER-ITEMS-ASSETS> 13935
<TOTAL-ASSETS> 2887507133
<PAYABLE-FOR-SECURITIES> 971076125
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 14026753
<TOTAL-LIABILITIES> 985102878
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2425978692
<SHARES-COMMON-STOCK> 60767078
<SHARES-COMMON-PRIOR> 73646340
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 502344
<ACCUMULATED-NET-GAINS> (572619975)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 40912660
<NET-ASSETS> 1902404255
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 12381835
<OTHER-INCOME> 0
<EXPENSES-NET> 2726794
<NET-INVESTMENT-INCOME> 9655041
<REALIZED-GAINS-CURRENT> 42447914
<APPREC-INCREASE-CURRENT> 4102771
<NET-CHANGE-FROM-OPS> 74973519
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 9773665
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7523887
<NUMBER-OF-SHARES-REDEEMED> 22360867
<SHARES-REINVESTED> 1957718
<NET-CHANGE-IN-ASSETS> (384007693)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (615067889)
<OVERDISTRIB-NII-PRIOR> 259315
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 848486
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2734864
<AVERAGE-NET-ASSETS> 169697111
<PER-SHARE-NAV-BEGIN> 2.59
<PER-SHARE-NII> .15
<PER-SHARE-GAIN-APPREC> .06
<PER-SHARE-DIVIDEND> .15
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.65
<EXPENSE-RATIO> 1.61
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 045
<NAME> CORE SERIES - CLASS Y
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1998
<PERIOD-START> DEC-10-1997
<PERIOD-END> NOV-30-1998
<INVESTMENTS-AT-COST> 5719719
<INVESTMENTS-AT-VALUE> 5785071
<RECEIVABLES> 1747660
<ASSETS-OTHER> 278634
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 7811365
<PAYABLE-FOR-SECURITIES> 3111623
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5601
<TOTAL-LIABILITIES> 3117224
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4284885
<SHARES-COMMON-STOCK> 427854
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 264059
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 79846
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 65352
<NET-ASSETS> 4694141
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 264059
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 264059
<REALIZED-GAINS-CURRENT> 79846
<APPREC-INCREASE-CURRENT> 65352
<NET-CHANGE-FROM-OPS> 409257
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 427854
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 4694151
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 21264
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 31090
<AVERAGE-NET-ASSETS> 4302386
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> .62
<PER-SHARE-GAIN-APPREC> .35
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.97
<EXPENSE-RATIO> 0
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
