<PAGE> PAGE 1
000 B000000 11/30/1999
000 C000000 0000911507
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 LORD ABBETT INVESTMENT TRUST
001 B000000 811-7988
001 C000000 2013952851
002 A000000 90 HUDSON STREET
002 B000000 JERSEY CITY
002 C000000 NJ
002 D010000 07302
002 D020000 3973
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 6
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 C020500 HIGH YIELD
007 C030500 N
007 C010600 6
007 C020600 STRATEGIC CORE
007 C030600 N
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 JERSEY CITY
008 D02AA01 NJ
008 D03AA01 07302
<PAGE> PAGE 2
008 D04AA01 3973
011 A00AA01 LORD ABBETT DISTRIBUTOR LLC
011 B00AA01 8-216
011 C01AA01 JERSEY CITY
011 C02AA01 NJ
011 C03AA01 07302
011 C04AA01 3973
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 42
019 C00AA00 LORDABBETT
020 C000001 0
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 FUJI SECURITIES INC.
022 B000001 36-2880742
022 C000001 7429095
022 D000001 6282491
022 A000002 SALOMON BROTHERS, INC.
022 B000002 13-3082694
022 C000002 6542001
022 D000002 6389330
022 A000003 LEHMAN BROTHERS INC.
022 B000003 13-2518466
022 C000003 3145191
022 D000003 3004436
022 A000004 FREDDIE MAC. INC.
022 B000004 00-0000000
<PAGE> PAGE 3
022 C000004 2669888
022 D000004 2747001
022 A000005 NOMURA SECURITIES INTERNATIONAL INC.
022 B000005 13-2642206
022 C000005 2525055
022 D000005 2181682
022 A000006 MORGAN STANLEY & CO.
022 B000006 13-2655998
022 C000006 1763156
022 D000006 740267
022 A000007 CREDIT SUISSE FIRST BOSTON CORP.
022 B000007 13-5659485
022 C000007 897977
022 D000007 1072231
022 A000008 JP MORGAN SECURITIES
022 B000008 13-3224016
022 C000008 547368
022 D000008 541852
022 A000009 BEAR STERNS & CO.
022 B000009 13-3299429
022 C000009 418081
022 D000009 413051
022 A000010 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
022 B000010 13-5674085
022 C000010 241304
022 D000010 413051
023 C000000 26630662
023 D000000 26763715
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
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
027 000000 Y
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
054 D00AA00 N
054 E00AA00 N
<PAGE> PAGE 4
054 F00AA00 N
054 G00AA00 Y
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 Y
054 M00AA00 N
054 N00AA00 N
054 O00AA00 N
055 A00AA00 N
055 B00AA00 N
056 00AA00 Y
057 00AA00 N
058 A00AA00 N
059 00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061 00AA00 1000
077 A000000 Y
077 B000000 Y
078 000000 N
080 A00AA00 ICI MUTUAL INSURANCE CO.
080 C00AA00 25000
081 A00AA00 Y
081 B00AA00 36
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 9375
028 A020100 4996
028 A030100 0
028 A040100 49668
028 B010100 10483
<PAGE> PAGE 5
028 B020100 4906
028 B030100 0
028 B040100 43677
028 C010100 16197
028 C020100 4553
028 C030100 0
028 C040100 43612
028 D010100 11091
028 D020100 4543
028 D030100 0
028 D040100 41779
028 E010100 21874
028 E020100 4485
028 E030100 0
028 E040100 42881
028 F010100 10265
028 F020100 4443
028 F030100 0
028 F040100 32218
028 G010100 79285
028 G020100 27926
028 G030100 0
028 G040100 253835
028 H000100 69681
029 000100 Y
030 A000100 747
030 B000100 4.75
030 C000100 0.00
031 A000100 100
031 B000100 0
032 000100 647
033 000100 0
034 000100 Y
035 000100 238
036 A000100 Y
036 B000100 0
037 000100 N
038 000100 0
039 000100 N
040 000100 Y
041 000100 Y
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 6692
044 000100 0
<PAGE> PAGE 6
045 000100 Y
046 000100 N
047 000100 Y
048 000100 0.000
048 A010100 3000000
048 A020100 0.500
048 B010100 0
048 B020100 0.000
048 C010100 0
048 C020100 0.000
048 D010100 0
048 D020100 0.000
048 E010100 0
048 E020100 0.000
048 F010100 0
048 F020100 0.000
048 G010100 0
048 G020100 0.000
048 H010100 0
048 H020100 0.000
048 I010100 0
048 I020100 0.000
048 J010100 0
048 J020100 0.000
048 K010100 3000000
048 K020100 0.450
049 000100 N
050 000100 N
051 000100 N
052 000100 N
053 A000100 N
062 A000100 Y
062 B000100 0.0
062 C000100 7.1
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 0.0
062 M000100 9.5
062 N000100 111.2
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 0
063 B000100 12.4
<PAGE> PAGE 7
064 A000100 N
064 B000100 N
066 A000100 N
067 000100 N
068 A000100 N
068 B000100 N
069 000100 N
070 A010100 Y
070 A020100 N
070 B010100 N
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 Y
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 Y
070 K020100 N
070 L010100 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 N
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 8069214
071 B000100 8435856
071 C000100 2035801
071 D000100 396
072 A000100 12
072 B000100 120525
072 C000100 0
072 D000100 0
<PAGE> PAGE 8
072 E000100 0
072 F000100 8529
072 G000100 0
072 H000100 0
072 I000100 2070
072 J000100 0
072 K000100 0
072 L000100 277
072 M000100 88
072 N000100 69
072 O000100 11
072 P000100 0
072 Q000100 0
072 R000100 137
072 S000100 48
072 T000100 6692
072 U000100 0
072 V000100 0
072 W000100 183
072 X000100 18104
072 Y000100 0
072 Z000100 102421
072AA000100 0
072BB000100 42250
072CC010100 0
072CC020100 83086
072DD010100 97346
072DD020100 1803
072EE000100 0
073 A010100 0.1600
073 A020100 0.1400
073 B000100 0.0000
073 C000100 0.0000
074 A000100 17
074 B000100 0
074 C000100 106620
074 D000100 1818000
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 147573
074 K000100 0
074 L000100 10597
074 M000100 115043
074 N000100 2197850
074 O000100 564174
074 P000100 0
074 Q000100 0
074 R010100 0
<PAGE> PAGE 9
074 R020100 0
074 R030100 0
074 R040100 128086
074 S000100 0
074 T000100 1505590
074 U010100 552850
074 U020100 13532
074 V010100 2.45
074 V020100 2.45
074 W000100 0.0000
074 X000100 54508
074 Y000100 0
075 A000100 0
075 B000100 1705554
076 000100 0.00
028 A010200 670
028 A020200 40
028 A030200 0
028 A040200 489
028 B010200 2150
028 B020200 38
028 B030200 0
028 B040200 2517
028 C010200 2958
028 C020200 29
028 C030200 0
028 C040200 3142
028 D010200 1040
028 D020200 29
028 D030200 0
028 D040200 509
028 E010200 1657
028 E020200 28
028 E030200 0
028 E040200 743
028 F010200 758
028 F020200 30
028 F030200 0
028 F040200 754
028 G010200 9233
028 G020200 194
028 G030200 0
028 G040200 8154
028 H000200 6459
029 000200 Y
030 A000200 101
030 B000200 4.75
030 C000200 0.00
031 A000200 14
031 B000200 0
032 000200 87
<PAGE> PAGE 10
033 000200 0
034 000200 Y
035 000200 11
036 A000200 Y
036 B000200 0
037 000200 N
038 000200 0
039 000200 N
040 000200 Y
041 000200 Y
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 55
044 000200 0
045 000200 Y
046 000200 N
047 000200 Y
048 000200 0.500
048 A010200 0
048 A020200 0.000
048 B010200 0
048 B020200 0.000
048 C010200 0
048 C020200 0.000
048 D010200 0
048 D020200 0.000
048 E010200 0
048 E020200 0.000
048 F010200 0
048 F020200 0.000
048 G010200 0
048 G020200 0.000
048 H010200 0
048 H020200 0.000
048 I010200 0
048 I020200 0.000
048 J010200 0
048 J020200 0.000
048 K010200 0
048 K020200 0.000
049 000200 N
050 000200 N
051 000200 N
052 000200 N
053 A000200 Y
<PAGE> PAGE 11
062 A000200 Y
062 B000200 0.0
062 C000200 6.4
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 2.8
062 N000200 112.6
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 0.0
063 A000200 0
063 B000200 8.4
064 A000200 N
064 B000200 N
066 A000200 N
067 000200 N
068 A000200 N
068 B000200 N
069 000200 N
070 A010200 Y
070 A020200 N
070 B010200 N
070 B020200 N
070 C010200 Y
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 Y
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 N
070 L010200 N
070 L020200 N
<PAGE> PAGE 12
070 M010200 N
070 M020200 N
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 N
070 P020200 N
070 Q010200 N
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200 58555
071 B000200 50339
071 C000200 16230
071 D000200 310
072 A000200 12
072 B000200 944
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 0
072 G000200 0
072 H000200 0
072 I000200 17
072 J000200 0
072 K000200 0
072 L000200 3
072 M000200 1
072 N000200 26
072 O000200 9
072 P000200 0
072 Q000200 0
072 R000200 1
072 S000200 2
072 T000200 55
072 U000200 0
072 V000200 0
072 W000200 9
072 X000200 123
072 Y000200 26
072 Z000200 847
072AA000200 0
072BB000200 241
072CC010200 0
072CC020200 289
072DD010200 473
072DD020200 260
072EE000200 0
073 A010200 0.2400
073 A020200 0.2000
<PAGE> PAGE 13
073 B000200 0.0000
073 C000200 0.0000
074 A000200 0
074 B000200 0
074 C000200 1037
074 D000200 18759
074 E000200 0
074 F000200 0
074 G000200 0
074 H000200 0
074 I000200 0
074 J000200 1008
074 K000200 0
074 L000200 165
074 M000200 0
074 N000200 20969
074 O000200 4431
074 P000200 0
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 289
074 S000200 0
074 T000200 16249
074 U010200 2376
074 U020200 1369
074 V010200 4.34
074 V020200 4.33
074 W000200 0.0000
074 X000200 373
074 Y000200 0
075 A000200 0
075 B000200 14502
076 000200 0.00
028 A010300 4747
028 A020300 266
028 A030300 0
028 A040300 1028
028 B010300 4105
028 B020300 278
028 B030300 0
028 B040300 896
028 C010300 4773
028 C020300 290
028 C030300 0
028 C040300 1269
028 D010300 3423
028 D020300 301
028 D030300 0
028 D040300 1278
<PAGE> PAGE 14
028 E010300 2681
028 E020300 342
028 E030300 0
028 E040300 827
028 F010300 2694
028 F020300 347
028 F030300 0
028 F040300 1298
028 G010300 22423
028 G020300 1824
028 G030300 0
028 G040300 6596
028 H000300 14312
029 000300 Y
030 A000300 1040
030 B000300 5.75
030 C000300 0.00
031 A000300 148
031 B000300 0
032 000300 892
033 000300 0
034 000300 Y
035 000300 26
036 A000300 Y
036 B000300 0
037 000300 N
038 000300 0
039 000300 N
040 000300 Y
041 000300 Y
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 362
044 000300 0
045 000300 Y
046 000300 N
047 000300 Y
048 000300 0.750
048 A010300 0
048 A020300 0.000
048 B010300 0
048 B020300 0.000
048 C010300 0
048 C020300 0.000
048 D010300 0
<PAGE> PAGE 15
048 D020300 0.000
048 E010300 0
048 E020300 0.000
048 F010300 0
048 F020300 0.000
048 G010300 0
048 G020300 0.000
048 H010300 0
048 H020300 0.000
048 I010300 0
048 I020300 0.000
048 J010300 0
048 J020300 0.000
048 K010300 0
048 K020300 0.000
049 000300 N
050 000300 N
051 000300 N
052 000300 N
053 A000300 N
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
066 A000300 Y
066 E000300 Y
067 000300 Y
068 A000300 N
068 B000300 N
069 000300 N
070 A010300 Y
070 A020300 N
070 B010300 Y
070 B020300 N
070 C010300 Y
<PAGE> PAGE 16
070 C020300 N
070 D010300 N
070 D020300 N
070 E010300 N
070 E020300 N
070 F010300 N
070 F020300 N
070 G010300 N
070 G020300 N
070 H010300 N
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 Y
070 J020300 N
070 K010300 Y
070 K020300 Y
070 L010300 Y
070 L020300 N
070 M010300 N
070 M020300 N
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 N
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300 51396
071 B000300 6754
071 C000300 81347
071 D000300 8
072 A000300 12
072 B000300 13
072 C000300 3924
072 D000300 0
072 E000300 0
072 F000300 0
072 G000300 0
072 H000300 0
072 I000300 157
072 J000300 0
072 K000300 0
072 L000300 18
072 M000300 0
072 N000300 41
072 O000300 8
072 P000300 0
<PAGE> PAGE 17
072 Q000300 0
072 R000300 8
072 S000300 2
072 T000300 362
072 U000300 8
072 V000300 0
072 W000300 2
072 X000300 606
072 Y000300 244
072 Z000300 3575
072AA000300 5616
072BB000300 0
072CC010300 0
072CC020300 2306
072DD010300 2629
072DD020300 357
072EE000300 5253
073 A010300 0.5400
073 A020300 0.4400
073 B000300 1.1400
073 C000300 0.0000
074 A000300 99
074 B000300 0
074 C000300 0
074 D000300 99736
074 E000300 0
074 F000300 0
074 G000300 0
074 H000300 0
074 I000300 0
074 J000300 0
074 K000300 0
074 L000300 659
074 M000300 0
074 N000300 100494
074 O000300 33
074 P000300 0
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 331
074 S000300 0
074 T000300 100130
074 U010300 5840
074 U020300 1068
074 V010300 12.34
074 V020300 12.32
074 W000300 0.0000
074 X000300 4657
074 Y000300 0
<PAGE> PAGE 18
075 A000300 0
075 B000300 81743
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 7
028 C010400 768
028 C020400 0
028 C030400 0
028 C040400 0
028 D010400 0
028 D020400 0
028 D030400 0
028 D040400 0
028 E010400 75
028 E020400 0
028 E030400 0
028 E040400 78
028 F010400 0
028 F020400 0
028 F030400 0
028 F040400 0
028 G010400 843
028 G020400 0
028 G030400 0
028 G040400 85
028 H000400 0
029 000400 N
030 A000400 0
030 B000400 0.00
030 C000400 0.00
031 A000400 0
031 B000400 0
032 000400 0
033 000400 0
034 000400 N
035 000400 0
036 B000400 0
037 000400 N
038 000400 0
039 000400 N
040 000400 Y
041 000400 N
042 A000400 0
042 B000400 0
042 C000400 0
<PAGE> PAGE 19
042 D000400 0
042 E000400 0
042 F000400 0
042 G000400 0
042 H000400 0
043 000400 0
044 000400 0
045 000400 Y
046 000400 N
047 000400 Y
048 000400 0.500
048 A010400 0
048 A020400 0.000
048 B010400 0
048 B020400 0.000
048 C010400 0
048 C020400 0.000
048 D010400 0
048 D020400 0.000
048 E010400 0
048 E020400 0.000
048 F010400 0
048 F020400 0.000
048 G010400 0
048 G020400 0.000
048 H010400 0
048 H020400 0.000
048 I010400 0
048 I020400 0.000
048 J010400 0
048 J020400 0.000
048 K010400 0
048 K020400 0.000
049 000400 N
050 000400 N
051 000400 N
052 000400 N
053 A000400 Y
062 A000400 Y
062 B000400 0.0
062 C000400 0.0
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 4.7
062 K000400 0.0
062 L000400 0.0
062 M000400 9.0
<PAGE> PAGE 20
062 N000400 116.2
062 O000400 0.0
062 P000400 1.3
062 Q000400 6.8
062 R000400 0.0
063 A000400 0
063 B000400 12.8
064 A000400 N
064 B000400 N
066 A000400 N
067 000400 N
068 A000400 N
068 B000400 N
069 000400 N
070 A010400 Y
070 A020400 N
070 B010400 Y
070 B020400 N
070 C010400 Y
070 C020400 N
070 D010400 N
070 D020400 N
070 E010400 Y
070 E020400 N
070 F010400 N
070 F020400 N
070 G010400 N
070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 N
070 K010400 Y
070 K020400 N
070 L010400 Y
070 L020400 N
070 M010400 Y
070 M020400 N
070 N010400 Y
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 N
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 N
070 R020400 N
071 A000400 45964
<PAGE> PAGE 21
071 B000400 40828
071 C000400 9891
071 D000400 413
072 A000400 12
072 B000400 524
072 C000400 0
072 D000400 0
072 E000400 0
072 F000400 0
072 G000400 0
072 H000400 0
072 I000400 1
072 J000400 0
072 K000400 0
072 L000400 0
072 M000400 0
072 N000400 0
072 O000400 2
072 P000400 0
072 Q000400 0
072 R000400 3
072 S000400 1
072 T000400 0
072 U000400 0
072 V000400 0
072 W000400 3
072 X000400 10
072 Y000400 10
072 Z000400 524
072AA000400 0
072BB000400 202
072CC010400 0
072CC020400 238
072DD010400 277
072DD020400 0
072EE000400 81
073 A010400 0.4100
073 A020400 0.0000
073 B000400 0.1200
073 C000400 0.0000
074 A000400 21
074 B000400 0
074 C000400 410
074 D000400 11093
074 E000400 0
074 F000400 0
074 G000400 0
074 H000400 0
074 I000400 0
074 J000400 280
074 K000400 0
<PAGE> PAGE 22
074 L000400 48
074 M000400 0
074 N000400 11852
074 O000400 2868
074 P000400 0
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 271
074 S000400 0
074 T000400 8713
074 U010400 826
074 U020400 0
074 V010400 10.54
074 V020400 0.00
074 W000400 0.0000
074 X000400 14
074 Y000400 0
075 A000400 0
075 B000400 7923
076 000400 0.00
028 A010500 2247
028 A020500 126
028 A030500 0
028 A040500 365
028 B010500 2432
028 B020500 127
028 B030500 0
028 B040500 300
028 C010500 713
028 C020500 136
028 C030500 0
028 C040500 117
028 D010500 1319
028 D020500 140
028 D030500 0
028 D040500 292
028 E010500 844
028 E020500 144
028 E030500 0
028 E040500 1676
028 F010500 2514
028 F020500 151
028 F030500 0
028 F040500 1116
028 G010500 10069
028 G020500 824
028 G030500 0
028 G040500 3866
028 H000500 5051
<PAGE> PAGE 23
029 000500 Y
030 A000500 310
030 B000500 4.75
030 C000500 0.00
031 A000500 33
031 B000500 0
032 000500 277
033 000500 0
034 000500 Y
035 000500 10
036 A000500 Y
036 B000500 0
037 000500 N
038 000500 0
039 000500 N
040 000500 Y
041 000500 Y
042 A000500 0
042 B000500 0
042 C000500 0
042 D000500 100
042 E000500 0
042 F000500 0
042 G000500 0
042 H000500 0
043 000500 138
044 000500 0
045 000500 Y
046 000500 N
047 000500 Y
048 000500 0.600
048 A010500 0
048 A020500 0.000
048 B010500 0
048 B020500 0.000
048 C010500 0
048 C020500 0.000
048 D010500 0
048 D020500 0.000
048 E010500 0
048 E020500 0.000
048 F010500 0
048 F020500 0.000
048 G010500 0
048 G020500 0.000
048 H010500 0
048 H020500 0.000
048 I010500 0
048 I020500 0.000
048 J010500 0
048 J020500 0.000
<PAGE> PAGE 24
048 K010500 0
048 K020500 0.000
049 000500 N
050 000500 N
051 000500 N
052 000500 N
053 A000500 Y
062 A000500 Y
062 B000500 0.0
062 C000500 0.0
062 D000500 0.0
062 E000500 0.0
062 F000500 0.0
062 G000500 0.0
062 H000500 0.0
062 I000500 0.0
062 J000500 4.1
062 K000500 0.0
062 L000500 0.0
062 M000500 0.0
062 N000500 0.0
062 O000500 0.0
062 P000500 92.9
062 Q000500 0.0
062 R000500 0.0
063 A000500 0
063 B000500 5.4
064 A000500 N
064 B000500 N
066 A000500 N
067 000500 N
068 A000500 N
068 B000500 N
069 000500 N
070 A010500 Y
070 A020500 N
070 B010500 N
070 B020500 N
070 C010500 Y
070 C020500 N
070 D010500 N
070 D020500 N
070 E010500 Y
070 E020500 N
070 F010500 N
070 F020500 N
070 G010500 N
070 G020500 N
070 H010500 N
070 H020500 N
070 I010500 N
<PAGE> PAGE 25
070 I020500 N
070 J010500 Y
070 J020500 Y
070 K010500 Y
070 K020500 N
070 L010500 Y
070 L020500 Y
070 M010500 N
070 M020500 N
070 N010500 Y
070 N020500 N
070 O010500 Y
070 O020500 N
070 P010500 N
070 P020500 N
070 Q010500 N
070 Q020500 N
070 R010500 N
070 R020500 N
071 A000500 47753
071 B000500 20056
071 C000500 18304
071 D000500 110
072 A000500 12
072 B000500 1818
072 C000500 8
072 D000500 0
072 E000500 0
072 F000500 0
072 G000500 0
072 H000500 0
072 I000500 18
072 J000500 0
072 K000500 0
072 L000500 3
072 M000500 0
072 N000500 22
072 O000500 4
072 P000500 0
072 Q000500 0
072 R000500 3
072 S000500 2
072 T000500 138
072 U000500 0
072 V000500 0
072 W000500 3
072 X000500 193
072 Y000500 55
072 Z000500 1688
072AA000500 0
072BB000500 301
<PAGE> PAGE 26
072CC010500 0
072CC020500 812
072DD010500 876
072DD020500 430
072EE000500 0
073 A010500 0.8500
073 A020500 0.7900
073 B000500 0.0000
073 C000500 0.0000
074 A000500 101
074 B000500 0
074 C000500 1175
074 D000500 26944
074 E000500 0
074 F000500 0
074 G000500 0
074 H000500 0
074 I000500 0
074 J000500 0
074 K000500 0
074 L000500 626
074 M000500 0
074 N000500 28846
074 O000500 114
074 P000500 0
074 Q000500 0
074 R010500 0
074 R020500 0
074 R030500 0
074 R040500 43
074 S000500 0
074 T000500 28689
074 U010500 1454
074 U020500 887
074 V010500 9.72
074 V020500 9.70
074 W000500 0.0000
074 X000500 617
074 Y000500 0
075 A000500 0
075 B000500 20615
076 000500 0.00
028 A010600 0
028 A020600 0
028 A030600 0
028 A040600 0
028 B010600 0
028 B020600 0
028 B030600 0
028 B040600 0
028 C010600 0
<PAGE> PAGE 27
028 C020600 0
028 C030600 0
028 C040600 0
028 D010600 0
028 D020600 0
028 D030600 0
028 D040600 0
028 E010600 0
028 E020600 0
028 E030600 0
028 E040600 0
028 F010600 0
028 F020600 0
028 F030600 0
028 F040600 0
028 G010600 0
028 G020600 0
028 G030600 0
028 G040600 0
028 H000600 0
029 000600 Y
030 A000600 0
030 B000600 0.00
030 C000600 0.00
031 A000600 0
031 B000600 0
032 000600 0
033 000600 0
034 000600 Y
035 000600 0
036 A000600 Y
036 B000600 0
037 000600 N
038 000600 0
039 000600 N
040 000600 Y
041 000600 N
042 A000600 0
042 B000600 0
042 C000600 0
042 D000600 0
042 E000600 0
042 F000600 0
042 G000600 0
042 H000600 0
043 000600 0
044 000600 0
045 000600 Y
046 000600 N
047 000600 Y
048 000600 0.500
<PAGE> PAGE 28
048 A010600 0
048 A020600 0.000
048 B010600 0
048 B020600 0.000
048 C010600 0
048 C020600 0.000
048 D010600 0
048 D020600 0.000
048 E010600 0
048 E020600 0.000
048 F010600 0
048 F020600 0.000
048 G010600 0
048 G020600 0.000
048 H010600 0
048 H020600 0.000
048 I010600 0
048 I020600 0.000
048 J010600 0
048 J020600 0.000
048 K010600 0
048 K020600 0.000
049 000600 N
050 000600 N
051 000600 N
052 000600 N
053 A000600 Y
062 A000600 Y
062 B000600 0.0
062 C000600 8.3
062 D000600 0.0
062 E000600 0.0
062 F000600 0.0
062 G000600 0.0
062 H000600 0.0
062 I000600 0.0
062 J000600 0.0
062 K000600 0.0
062 L000600 0.0
062 M000600 8.6
062 N000600 106.1
062 O000600 0.0
062 P000600 6.2
062 Q000600 2.8
062 R000600 0.0
063 A000600 0
063 B000600 11.2
066 A000600 N
067 000600 N
068 A000600 N
068 B000600 N
<PAGE> PAGE 29
069 000600 N
070 A010600 Y
070 A020600 N
070 B010600 N
070 B020600 N
070 C010600 Y
070 C020600 N
070 D010600 N
070 D020600 N
070 E010600 Y
070 E020600 N
070 F010600 N
070 F020600 N
070 G010600 N
070 G020600 N
070 H010600 N
070 H020600 N
070 I010600 N
070 I020600 N
070 J010600 Y
070 J020600 N
070 K010600 Y
070 K020600 N
070 L010600 N
070 L020600 N
070 M010600 Y
070 M020600 N
070 N010600 Y
070 N020600 N
070 O010600 Y
070 O020600 N
070 P010600 N
070 P020600 N
070 Q010600 N
070 Q020600 N
070 R010600 N
070 R020600 N
071 A000600 13595
071 B000600 10833
071 C000600 2605
071 D000600 416
072 A000600 12
072 B000600 129
072 C000600 0
072 D000600 0
072 E000600 0
072 F000600 0
072 G000600 0
072 H000600 0
072 I000600 0
072 J000600 0
<PAGE> PAGE 30
072 K000600 0
072 L000600 0
072 M000600 0
072 N000600 0
072 O000600 2
072 P000600 0
072 Q000600 0
072 R000600 3
072 S000600 1
072 T000600 0
072 U000600 0
072 V000600 0
072 W000600 3
072 X000600 9
072 Y000600 9
072 Z000600 129
072AA000600 0
072BB000600 58
072CC010600 0
072CC020600 44
072DD010600 0
072DD020600 0
072EE000600 0
073 A010600 0.0000
073 A020600 0.0000
073 B000600 0.0000
073 C000600 0.0000
074 A000600 25
074 B000600 0
074 C000600 174
074 D000600 2601
074 E000600 0
074 F000600 0
074 G000600 0
074 H000600 0
074 I000600 0
074 J000600 98
074 K000600 0
074 L000600 60
074 M000600 0
074 N000600 2958
074 O000600 855
074 P000600 0
074 Q000600 0
074 R010600 0
074 R020600 0
074 R030600 0
074 R040600 0
074 S000600 0
074 T000600 2103
074 U010600 208
<PAGE> PAGE 31
074 U020600 0
074 V010600 10.13
074 V020600 0.00
074 W000600 0.0000
074 X000600 9
074 Y000600 0
075 A000600 0
075 B000600 2078
076 000600 0.00
SIGNATURE DONNA M. MCMANUS
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 041
<NAME> LORD ABBETT INVESTMENT TRUST - CORE - CLASS Y
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 11,675,313
<INVESTMENTS-AT-VALUE> 11,502,988
<RECEIVABLES> 328,024
<ASSETS-OTHER> 20,824
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 11,851,836
<PAYABLE-FOR-SECURITIES> 2,868,367
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 270,729
<TOTAL-LIABILITIES> 3,139,096
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 8,577,055
<SHARES-COMMON-STOCK> 826,290
<SHARES-COMMON-PRIOR> 427,854
<ACCUMULATED-NII-CURRENT> 511,004
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (202,994)
<ACCUM-APPREC-OR-DEPREC> (172,325)
<NET-ASSETS> 8,712,740
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 524,334
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 524,334
<REALIZED-GAINS-CURRENT> (201,653)
<APPREC-INCREASE-CURRENT> (237,677)
<NET-CHANGE-FROM-OPS> 85,004
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (277,388)
<DISTRIBUTIONS-OF-GAINS> (81,187)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 383,951
<NUMBER-OF-SHARES-REDEEMED> (20,026)
<SHARES-REINVESTED> 34,511
<NET-CHANGE-IN-ASSETS> 4,018,599
<ACCUMULATED-NII-PRIOR> 264,058
<ACCUMULATED-GAINS-PRIOR> 79,846
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 0
<AVERAGE-NET-ASSETS> 7,922,952
<PER-SHARE-NAV-BEGIN> 10.97
<PER-SHARE-NII> 0.69
<PER-SHARE-GAIN-APPREC> (0.59)
<PER-SHARE-DIVIDEND> (0.41)
<PER-SHARE-DISTRIBUTIONS> (0.12)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.54
<EXPENSE-RATIO> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 051
<NAME> LORD ABBETT INVESTMENT TRUST - HIGH YIELD - CLASS A
<S> <C>
<PERIOD-TYPE> 11-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-START> DEC-31-1998
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 28,930,569
<INVESTMENTS-AT-VALUE> 28,118,955
<RECEIVABLES> 626,298
<ASSETS-OTHER> 100,647
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,845,900
<PAYABLE-FOR-SECURITIES> 114,454
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 42,475
<TOTAL-LIABILITIES> 156,929
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 29,768,902
<SHARES-COMMON-STOCK> 1,454,162
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 32,880
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (301,197)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (811,614)
<NET-ASSETS> 14,133,125
<DIVIDEND-INCOME> 8,594
<INTEREST-INCOME> 1,818,026
<OTHER-INCOME> 0
<EXPENSES-NET> 138,334
<NET-INVESTMENT-INCOME> 1,688,286
<REALIZED-GAINS-CURRENT> (301,197)
<APPREC-INCREASE-CURRENT> (811,614)
<NET-CHANGE-FROM-OPS> 575,475
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (876,233)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,773,480
<NUMBER-OF-SHARES-REDEEMED> (389,093)
<SHARES-REINVESTED> 69,775
<NET-CHANGE-IN-ASSETS> 28,688,971
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 193,387
<AVERAGE-NET-ASSETS> 9,759,024
<PER-SHARE-NAV-BEGIN> 10.08
<PER-SHARE-NII> 0.83
<PER-SHARE-GAIN-APPREC> (0.34)
<PER-SHARE-DIVIDEND> (0.85)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.72
<EXPENSE-RATIO> 0.46
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 052
<NAME> LORD ABBETT INVESTMENT TRUST - HIGH YIELD - CLASS B
<S> <C>
<PERIOD-TYPE> 11-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-START> DEC-31-1998
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 28,930,569
<INVESTMENTS-AT-VALUE> 28,118,955
<RECEIVABLES> 626,298
<ASSETS-OTHER> 100,647
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,845,900
<PAYABLE-FOR-SECURITIES> 114,454
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 42,475
<TOTAL-LIABILITIES> 156,929
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 29,768,902
<SHARES-COMMON-STOCK> 887,440
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 32,880
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (301,197)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (811,614)
<NET-ASSETS> 8,609,577
<DIVIDEND-INCOME> 8,594
<INTEREST-INCOME> 1,818,026
<OTHER-INCOME> 0
<EXPENSES-NET> 138,334
<NET-INVESTMENT-INCOME> 1,688,286
<REALIZED-GAINS-CURRENT> (301,197)
<APPREC-INCREASE-CURRENT> (811,614)
<NET-CHANGE-FROM-OPS> 575,475
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (430,430)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,021,780
<NUMBER-OF-SHARES-REDEEMED> (161,478)
<SHARES-REINVESTED> 27,138
<NET-CHANGE-IN-ASSETS> 28,688,971
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 193,387
<AVERAGE-NET-ASSETS> 5,070,925
<PER-SHARE-NAV-BEGIN> 10.08
<PER-SHARE-NII> 0.78
<PER-SHARE-GAIN-APPREC> (0.37)
<PER-SHARE-DIVIDEND> (0.79)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.70
<EXPENSE-RATIO> 0.90
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 053
<NAME> LORD ABBETT INVESTMENT TRUST - HIGH YIELD - CLASS C
<S> <C>
<PERIOD-TYPE> 11-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-START> DEC-31-1998
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 28,930,569
<INVESTMENTS-AT-VALUE> 28,118,955
<RECEIVABLES> 626,298
<ASSETS-OTHER> 100,647
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,845,900
<PAYABLE-FOR-SECURITIES> 114,454
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 42,475
<TOTAL-LIABILITIES> 156,929
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 29,768,902
<SHARES-COMMON-STOCK> 612,638
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 32,880
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (301,197)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (811,614)
<NET-ASSETS> 5,945,149
<DIVIDEND-INCOME> 8,594
<INTEREST-INCOME> 1,818,026
<OTHER-INCOME> 0
<EXPENSES-NET> 138,334
<NET-INVESTMENT-INCOME> 1,688,286
<REALIZED-GAINS-CURRENT> (301,197)
<APPREC-INCREASE-CURRENT> (811,614)
<NET-CHANGE-FROM-OPS> 575,475
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (348,682)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 638,634
<NUMBER-OF-SHARES-REDEEMED> (48,021)
<SHARES-REINVESTED> 22,025
<NET-CHANGE-IN-ASSETS> 28,688,971
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 193,387
<AVERAGE-NET-ASSETS> 4,072,447
<PER-SHARE-NAV-BEGIN> 10.08
<PER-SHARE-NII> 0.78
<PER-SHARE-GAIN-APPREC> (0.37)
<PER-SHARE-DIVIDEND> (0.79)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.70
<EXPENSE-RATIO> 0.90
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 054
<NAME> LORD ABBETT INVESTMENT TRUST - HIGH YIELD - CLASS Y
<S> <C>
<PERIOD-TYPE> 7-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-START> MAY-04-1998
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 28,930,569
<INVESTMENTS-AT-VALUE> 28,118,955
<RECEIVABLES> 626,298
<ASSETS-OTHER> 100,647
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,845,900
<PAYABLE-FOR-SECURITIES> 114,454
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 42,475
<TOTAL-LIABILITIES> 156,929
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 29,768,902
<SHARES-COMMON-STOCK> 115
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 32,880
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (301,197)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (811,614)
<NET-ASSETS> 1,120
<DIVIDEND-INCOME> 8,594
<INTEREST-INCOME> 1,818,026
<OTHER-INCOME> 0
<EXPENSES-NET> 138,334
<NET-INVESTMENT-INCOME> 1,688,286
<REALIZED-GAINS-CURRENT> (301,197)
<APPREC-INCREASE-CURRENT> (811,614)
<NET-CHANGE-FROM-OPS> 575,475
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (61)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 110
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 5
<NET-CHANGE-IN-ASSETS> 28,688,971
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 193,387
<AVERAGE-NET-ASSETS> 1,065
<PER-SHARE-NAV-BEGIN> 10.36
<PER-SHARE-NII> 0.55
<PER-SHARE-GAIN-APPREC> (0.62)
<PER-SHARE-DIVIDEND> (0.56)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.73
<EXPENSE-RATIO> 0
</TABLE>
<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-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 103,619,650
<INVESTMENTS-AT-VALUE> 99,735,899
<RECEIVABLES> 658,798
<ASSETS-OTHER> 99,243
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 100,493,940
<PAYABLE-FOR-SECURITIES> 33,131
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 330,342
<TOTAL-LIABILITIES> 363,473
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 98,189,306
<SHARES-COMMON-STOCK> 5,840,499
<SHARES-COMMON-PRIOR> 3,471,843
<ACCUMULATED-NII-CURRENT> 228,203
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 5,596,709
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (3,883,751)
<NET-ASSETS> 72,073,680
<DIVIDEND-INCOME> 3,923,604
<INTEREST-INCOME> 13,139
<OTHER-INCOME> 0
<EXPENSES-NET> 362,175
<NET-INVESTMENT-INCOME> 3,574,568
<REALIZED-GAINS-CURRENT> 5,616,227
<APPREC-INCREASE-CURRENT> (2,306,194)
<NET-CHANGE-FROM-OPS> 6,884,601
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,628,685)
<DISTRIBUTIONS-OF-GAINS> (4,050,949)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,552,160
<NUMBER-OF-SHARES-REDEEMED> (729,757)
<SHARES-REINVESTED> 546,253
<NET-CHANGE-IN-ASSETS> 42,455,763
<ACCUMULATED-NII-PRIOR> 40,055
<ACCUMULATED-GAINS-PRIOR> 5,233,644
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 610,001
<AVERAGE-NET-ASSETS> 60,471,720
<PER-SHARE-NAV-BEGIN> 12.87
<PER-SHARE-NII> 0.54
<PER-SHARE-GAIN-APPREC> 0.61
<PER-SHARE-DIVIDEND> (0.54)
<PER-SHARE-DISTRIBUTIONS> (1.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.34
<EXPENSE-RATIO> 0.25
</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-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 103,619,650
<INVESTMENTS-AT-VALUE> 99,735,899
<RECEIVABLES> 658,798
<ASSETS-OTHER> 99,243
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 100,493,940
<PAYABLE-FOR-SECURITIES> 33,131
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 330,342
<TOTAL-LIABILITIES> 363,473
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 98,189,306
<SHARES-COMMON-STOCK> 1,067,624
<SHARES-COMMON-PRIOR> 396,867
<ACCUMULATED-NII-CURRENT> 228,203
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 5,596,709
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (3,883,751)
<NET-ASSETS> 13,148,916
<DIVIDEND-INCOME> 3,923,604
<INTEREST-INCOME> 13,139
<OTHER-INCOME> 0
<EXPENSES-NET> 362,175
<NET-INVESTMENT-INCOME> 3,574,568
<REALIZED-GAINS-CURRENT> 5,616,227
<APPREC-INCREASE-CURRENT> (2,306,194)
<NET-CHANGE-FROM-OPS> 6,884,601
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (356,628)
<DISTRIBUTIONS-OF-GAINS> (489,278)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 696,037
<NUMBER-OF-SHARES-REDEEMED> (91,703)
<SHARES-REINVESTED> 66,423
<NET-CHANGE-IN-ASSETS> 42,455,763
<ACCUMULATED-NII-PRIOR> 40,055
<ACCUMULATED-GAINS-PRIOR> 5,233,644
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 610,001
<AVERAGE-NET-ASSETS> 10,021,730
<PER-SHARE-NAV-BEGIN> 12.86
<PER-SHARE-NII> 0.52
<PER-SHARE-GAIN-APPREC> 0.52
<PER-SHARE-DIVIDEND> (0.44)
<PER-SHARE-DISTRIBUTIONS> (1.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.32
<EXPENSE-RATIO> 1.00
</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-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 103,619,650
<INVESTMENTS-AT-VALUE> 99,735,899
<RECEIVABLES> 658,798
<ASSETS-OTHER> 99,243
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 100,493,940
<PAYABLE-FOR-SECURITIES> 33,131
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 330,342
<TOTAL-LIABILITIES> 363,473
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 98,189,306
<SHARES-COMMON-STOCK> 1,211,384
<SHARES-COMMON-PRIOR> 614,958
<ACCUMULATED-NII-CURRENT> 228,203
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 5,596,709
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (3,883,751)
<NET-ASSETS> 14,907,871
<DIVIDEND-INCOME> 3,923,604
<INTEREST-INCOME> 13,139
<OTHER-INCOME> 0
<EXPENSES-NET> 362,175
<NET-INVESTMENT-INCOME> 3,574,568
<REALIZED-GAINS-CURRENT> 5,616,227
<APPREC-INCREASE-CURRENT> (2,306,194)
<NET-CHANGE-FROM-OPS> 6,884,601
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (401,107)
<DISTRIBUTIONS-OF-GAINS> (712,935)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 679,267
<NUMBER-OF-SHARES-REDEEMED> (173,289)
<SHARES-REINVESTED> 90,448
<NET-CHANGE-IN-ASSETS> 42,455,763
<ACCUMULATED-NII-PRIOR> 40,055
<ACCUMULATED-GAINS-PRIOR> 5,233,644
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 610,001
<AVERAGE-NET-ASSETS> 11,249,102
<PER-SHARE-NAV-BEGIN> 12.85
<PER-SHARE-NII> 0.52
<PER-SHARE-GAIN-APPREC> 0.52
<PER-SHARE-DIVIDEND> (0.44)
<PER-SHARE-DISTRIBUTIONS> (1.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.31
<EXPENSE-RATIO> 1.00
</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-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 19,990,609
<INVESTMENTS-AT-VALUE> 19,796,374
<RECEIVABLES> 1,172,894
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 20,969,268
<PAYABLE-FOR-SECURITIES> 4,431,615
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 288,626
<TOTAL-LIABILITIES> 4,720,241
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 18,208,034
<SHARES-COMMON-STOCK> 2,376,194
<SHARES-COMMON-PRIOR> 1,278,737
<ACCUMULATED-NII-CURRENT> 166,236
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (1,931,008)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (194,235)
<NET-ASSETS> 10,319,968
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 943,808
<OTHER-INCOME> 0
<EXPENSES-NET> 96,573
<NET-INVESTMENT-INCOME> 847,235
<REALIZED-GAINS-CURRENT> (240,747)
<APPREC-INCREASE-CURRENT> (289,099)
<NET-CHANGE-FROM-OPS> 317,389
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (472,868)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,793,591
<NUMBER-OF-SHARES-REDEEMED> (1,759,526)
<SHARES-REINVESTED> 63,392
<NET-CHANGE-IN-ASSETS> 5,249,222
<ACCUMULATED-NII-PRIOR> 51,920
<ACCUMULATED-GAINS-PRIOR> (1,690,261)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 129,137
<AVERAGE-NET-ASSETS> 8,680,913
<PER-SHARE-NAV-BEGIN> 4.46
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> (0.15)
<PER-SHARE-DIVIDEND> (0.24)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 4.34
<EXPENSE-RATIO> 0.32
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST
<SERIES>
<NUMBER> 022
<NAME> LIMITED DURATION US GOVERNMENT SERIES - CLASS C
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 19,990,609
<INVESTMENTS-AT-VALUE> 19,796,374
<RECEIVABLES> 1,172,894
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 20,969,268
<PAYABLE-FOR-SECURITIES> 4,431,615
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 288,626
<TOTAL-LIABILITIES> 4,720,241
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 18,208,034
<SHARES-COMMON-STOCK> 1,369,343
<SHARES-COMMON-PRIOR> 1,185,415
<ACCUMULATED-NII-CURRENT> 166,236
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (1,931,008)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (194,235)
<NET-ASSETS> 5,929,059
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 943,808
<OTHER-INCOME> 0
<EXPENSES-NET> 96,573
<NET-INVESTMENT-INCOME> 847,235
<REALIZED-GAINS-CURRENT> (240,747)
<APPREC-INCREASE-CURRENT> (289,099)
<NET-CHANGE-FROM-OPS> 317,389
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (260,051)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,153,772
<NUMBER-OF-SHARES-REDEEMED> (999,252)
<SHARES-REINVESTED> 29,408
<NET-CHANGE-IN-ASSETS> 5,249,222
<ACCUMULATED-NII-PRIOR> 51,920
<ACCUMULATED-GAINS-PRIOR> (1,690,261)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 129,137
<AVERAGE-NET-ASSETS> 5,821,391
<PER-SHARE-NAV-BEGIN> 4.47
<PER-SHARE-NII> 0.23
<PER-SHARE-GAIN-APPREC> (0.17)
<PER-SHARE-DIVIDEND> (0.20)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 4.33
<EXPENSE-RATIO> 1.29
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 061
<NAME> LORD ABBETT INVESTMENT TRUST - STRATEGIC CORE - CLASS Y
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-START> DEC-14-1998
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 2,819,291
<INVESTMENTS-AT-VALUE> 2,774,890
<RECEIVABLES> 121,140
<ASSETS-OTHER> 61,594
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,957,624
<PAYABLE-FOR-SECURITIES> 855,001
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 0
<TOTAL-LIABILITIES> 855,001
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2,075,129
<SHARES-COMMON-STOCK> 207,508
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 129,447
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (57,552)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (44,401)
<NET-ASSETS> 2,102,623
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 129,447
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 129,447
<REALIZED-GAINS-CURRENT> (57,552)
<APPREC-INCREASE-CURRENT> (44,401)
<NET-CHANGE-FROM-OPS> 27,494
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 207,508
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 2,102,623
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 0
<AVERAGE-NET-ASSETS> 2,078,380
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.62
<PER-SHARE-GAIN-APPREC> (0.49)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.13
<EXPENSE-RATIO> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 011
<NAME> US GOVERNMENT SERIES - CLASS A
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 1,966,793,377
<INVESTMENTS-AT-VALUE> 1,924,619,596
<RECEIVABLES> 158,170,221
<ASSETS-OTHER> 115,060,076
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,197,849,893
<PAYABLE-FOR-SECURITIES> 564,174,280
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 128,085,541
<TOTAL-LIABILITIES> 692,259,821
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2,169,572,575
<SHARES-COMMON-STOCK> 552,850,389
<SHARES-COMMON-PRIOR> 648,149,209
<ACCUMULATED-NII-CURRENT> (6,938,931)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (614,869,791)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (42,173,781)
<NET-ASSETS> 1,354,029,741
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 120,525,227
<OTHER-INCOME> 0
<EXPENSES-NET> 18,103,960
<NET-INVESTMENT-INCOME> 102,421,267
<REALIZED-GAINS-CURRENT> (42,249,816)
<APPREC-INCREASE-CURRENT> (83,086,441)
<NET-CHANGE-FROM-OPS> (22,914,990)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (97,345,650)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 57,845,002
<NUMBER-OF-SHARES-REDEEMED> (174,961,950)
<SHARES-REINVESTED> 21,818,128
<NET-CHANGE-IN-ASSETS> (396,814,182)
<ACCUMULATED-NII-PRIOR> (2,391,920)
<ACCUMULATED-GAINS-PRIOR> (572,619,975)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 8,529,176
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 18,427,240
<AVERAGE-NET-ASSETS> 1,534,643,379
<PER-SHARE-NAV-BEGIN> 2.64
<PER-SHARE-NII> 0.15
<PER-SHARE-GAIN-APPREC> (0.18)
<PER-SHARE-DIVIDEND> (0.16)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.45
<EXPENSE-RATIO> 1.02
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 012
<NAME> US GOVERNMENT SERIES - CLASS B
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 1,966,793,377
<INVESTMENTS-AT-VALUE> 1,924,619,596
<RECEIVABLES> 158,170,221
<ASSETS-OTHER> 115,060,076
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,197,849,893
<PAYABLE-FOR-SECURITIES> 564,174,280
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 128,085,541
<TOTAL-LIABILITIES> 692,259,821
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2,169,572,575
<SHARES-COMMON-STOCK> 13,531,794
<SHARES-COMMON-PRIOR> 11,100,263
<ACCUMULATED-NII-CURRENT> (6,938,931)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (614,869,791)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (42,173,781)
<NET-ASSETS> 33,181,077
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 120,525,227
<OTHER-INCOME> 0
<EXPENSES-NET> 18,103,960
<NET-INVESTMENT-INCOME> 102,421,267
<REALIZED-GAINS-CURRENT> (42,249,816)
<APPREC-INCREASE-CURRENT> (83,086,441)
<NET-CHANGE-FROM-OPS> (22,914,990)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,803,475)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6,206,611
<NUMBER-OF-SHARES-REDEEMED> (4,118,711)
<SHARES-REINVESTED> 343,631
<NET-CHANGE-IN-ASSETS> (396,814,182)
<ACCUMULATED-NII-PRIOR> (2,391,920)
<ACCUMULATED-GAINS-PRIOR> (572,619,975)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 8,529,176
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 18,427,240
<AVERAGE-NET-ASSETS> 32,089,057
<PER-SHARE-NAV-BEGIN> 2.64
<PER-SHARE-NII> 0.14
<PER-SHARE-GAIN-APPREC> (0.19)
<PER-SHARE-DIVIDEND> (0.14)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.45
<EXPENSE-RATIO> 1.69
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000911507
<NAME> LORD ABBETT INVESTMENT TRUST, INC.
<SERIES>
<NUMBER> 013
<NAME> US GOVERNMENT SERIES - CLASS C
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 1,966,793,377
<INVESTMENTS-AT-VALUE> 1,924,619,596
<RECEIVABLES> 158,170,221
<ASSETS-OTHER> 115,060,076
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2,197,849,893
<PAYABLE-FOR-SECURITIES> 564,174,280
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 128,085,541
<TOTAL-LIABILITIES> 692,259,821
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2,169,572,575
<SHARES-COMMON-STOCK> 48,238,869
<SHARES-COMMON-PRIOR> 60,767,078
<ACCUMULATED-NII-CURRENT> (6,938,931)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (614,869,791)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (42,173,781)
<NET-ASSETS> 118,379,254
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 120,525,227
<OTHER-INCOME> 0
<EXPENSES-NET> 18,103,960
<NET-INVESTMENT-INCOME> 102,421,267
<REALIZED-GAINS-CURRENT> (42,249,816)
<APPREC-INCREASE-CURRENT> (83,086,441)
<NET-CHANGE-FROM-OPS> (22,914,990)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (7,819,153)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,744,749
<NUMBER-OF-SHARES-REDEEMED> (17,811,371)
<SHARES-REINVESTED> 1,538,413
<NET-CHANGE-IN-ASSETS> (396,814,182)
<ACCUMULATED-NII-PRIOR> (2,391,920)
<ACCUMULATED-GAINS-PRIOR> (572,619,975)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 8,529,176
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 18,427,240
<AVERAGE-NET-ASSETS> 138,821,114
<PER-SHARE-NAV-BEGIN> 2.65
<PER-SHARE-NII> 0.14
<PER-SHARE-GAIN-APPREC> (0.20)
<PER-SHARE-DIVIDEND> (0.14)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 2.45
<EXPENSE-RATIO> 1.64
</TABLE>
Independent Auditors' Report
To the Board of Trustees and Shareholders,
Lord Abbett Investment Trust:
We have audited the accompanying statements of net assets of Lord Abbett
Investment Trust - Core Fixed Income Series and Strategic Core Fixed Income
Series as of November 30, 1999, the related statements of operations and of
changes in net assets and the financial highlights for the periods presented.
These financial statements and the financial highlights are the responsibility
of the Trust's management. Our responsibility is to express an opinion on these
financial statements and financial highlights based on our audits.
We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned at November
30, 1999 by correspondence with the custodian and brokers; where replies were
not received from brokers, we performed other auditing procedures. An audit also
includes assessing the accounting principles used and significant estimates made
by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.
In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of Lord Abbett
Investment Trust - Core Fixed Income Series and Strategic Core Fixed Income
Series at November 30, 1999, the results of their operations, the changes in
their net assets and their financial highlights for the periods presented, in
conformity with generally accepted accounting principles.
Independent Auditors' Report
To the Board of Trustees and Shareholders,
Lord Abbett Investment Trust:
We have audited the accompanying statements of net assets of Lord Abbett
Investment Trust - U.S. Government Securities Series, Limited Duration U.S.
Government Securities Series, Balanced Series, and High Yield Fund as of
November 30, 1999, the related statements of operations for the year then ended
and of changes in net assets for each of the years in the two-year period then
ended, and the financial highlights for each of the periods presented. These
financial statements and the financial highlights are the responsibility of the
Trust's management. Our responsibility is to express an opinion on these
financial statements and the financial highlights based on our audits.
We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned at November
30, 1999 by correspondence with the custodian and brokers; where replies were
not received from brokers, we performed other auditing procedures. An audit also
includes assessing the accounting principles used and significant estimates made
by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.
In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of Lord Abbett
Investment Trust - U.S. Government Securities Series, Limited Duration U.S.
Government Securities Series, Balanced Series, and High Yield Fund at November
30, 1999, the results of their operations, the changes in their net assets and
their financial highlights for each of the periods presented in conformity with
generally accepted accounting principles.