LORD ABBETT DEVELOPING GROWTH FUND INC /NEW/
NSAR-A, 1999-09-28
Previous: PIONEER BOND FUND /MA/, 24F-2NT, 1999-09-28
Next: PICCADILLY CAFETERIAS INC, 10-K, 1999-09-28



<PAGE>      PAGE  1
000 A000000 07/31/99
000 C000000 0000276914
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 DEVELOPING GROWTH FUND, INC.
001 B000000 811-2871
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 N
007 B000000  0
007 C010100  1
007 C010200  2
007 C010300  3
007 C010400  4
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A000001 LORD, ABBETT & CO.
008 B000001 A
008 C000001 801-6997
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10153
008 D040001 0101
011 A000001 LORD ABBETT DISTRIBUTOR LLC
011 B000001 8-216
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10153
011 C040001 0101
012 A000001 DST SYSTEMS INC.
012 B000001 84-448
012 C010001 KANSAS CITY
012 C020001 MO
012 C030001 64141
<PAGE>      PAGE  2
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10048
015 A000001 THE BANK OF NEW YORK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10015
015 E010001 X
018  000000 Y
019 A000000 Y
019 B000000   41
019 C000000 LORDABBETT
020 A000001 INVESTMENT TECH. G
020 B000001 0000000000
020 C000001    203
020 A000002 INSTINET CORP.
020 B000002 13-3443395
020 C000002     65
020 A000003 ADAMS HARKNESS
020 B000003 04-2149932
020 C000003     60
020 A000004 SALOMON SMITH BARNEY
020 B000004 13-3082694
020 C000004     44
020 A000005 COWEN & CO.
020 B000005 13-5616116
020 C000005     36
020 A000006 RAGEN MACKENZIE
020 B000006 91-1374280
020 C000006     36
020 A000007 HANIFEN, IMHOFF,INC.
020 B000007 84-0503513
020 C000007     29
020 A000008 CLEARY,GULL,REILAND & MCDEVITT,INC.
020 B000008 39-1567700
020 C000008     22
020 A000009 SCOTT & STRINGFELLOW,INC.
020 B000009 54-0957557
020 C000009     19
020 A000010 DEUTCHE MORGAN GRENFELL, INC.
020 B000010 13-2730828
020 C000010     18
021  000000      698
022 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000001 13-5674085
022 C000001   5702728
022 D000001   5516024
022 A000002 MORGAN STANLEY & CO. INC.
022 B000002 13-2655998
<PAGE>      PAGE  3
022 C000002   4699160
022 D000002   4764134
022 A000003 PRUDENTIAL SECURITIES, INC.
022 B000003 22-2347336
022 C000003   3240998
022 D000003   3101572
022 A000004 AMERICAN EXPRESS FINANCIAL CORP.
022 B000004 11-1988350
022 C000004   1000169
022 D000004   1000169
022 A000005 AMERICAN GENERAL SECURITIES INC.
022 B000005 13-3553648
022 C000005    518560
022 D000005    518560
022 A000006 FUJI SECURITIES
022 B000006 36-2880742
022 C000006    409638
022 D000006    429626
022 A000007 SALOMON BROTHERS, INC.
022 B000007 13-3082694
022 C000007    191169
022 D000007    169172
022 A000008 FORD MOTOR CREDIT CO.
022 B000008 38-1612444
022 C000008    171940
022 D000008    171940
022 A000009 G.E. CAPITAL
022 B000009 0000000000
022 C000009     98540
022 D000009     98540
022 C000010         0
022 D000010         0
023 C000000   16032903
023 D000000   15769738
024  000000 N
025 D000001       0
025 D000002       0
025 D000003       0
025 D000004       0
025 D000005       0
025 D000006       0
025 D000007       0
025 D000008       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
<PAGE>      PAGE  4
027  000000 Y
028 A010000     82665
028 A020000     26018
028 A030000         0
028 A040000     45857
028 B010000     87737
028 B020000         0
028 B030000         0
028 B040000     61850
028 C010000    212593
028 C020000         0
028 C030000         0
028 C040000     53972
028 D010000    123529
028 D020000         0
028 D030000         0
028 D040000     52159
028 E010000    117563
028 E020000         0
028 E030000         0
028 E040000     57556
028 F010000    186387
028 F020000         0
028 F030000         0
028 F040000     29515
028 G010000    810474
028 G020000     26018
028 G030000         0
028 G040000    300909
028 H000000    481542
029  000000 Y
030 A000000   2878
030 B000000  5.75
030 C000000  0.00
031 A000000    386
031 B000000      0
032  000000   2492
033  000000      0
034  000000 Y
035  000000    564
036 A000000 Y
036 B000000      0
037  000000 N
038  000000      0
039  000000 N
040  000000 Y
041  000000 Y
042 A000000   0
042 B000000   0
042 C000000   0
042 D000000 100
<PAGE>      PAGE  5
042 E000000   0
042 F000000   0
042 G000000   0
042 H000000   0
043  000000   3423
044  000000      0
045  000000 Y
046  000000 N
047  000000 Y
048  000000  0.000
048 A010000   100000
048 A020000 0.750
048 B010000        0
048 B020000 0.000
048 C010000        0
048 C020000 0.000
048 D010000        0
048 D020000 0.000
048 E010000        0
048 E020000 0.000
048 F010000        0
048 F020000 0.000
048 G010000        0
048 G020000 0.000
048 H010000        0
048 H020000 0.000
048 I010000        0
048 I020000 0.000
048 J010000        0
048 J020000 0.000
048 K010000   100000
048 K020000 0.500
049  000000 N
050  000000 N
051  000000 N
052  000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 Y
054 M000000 N
054 N000000 N
<PAGE>      PAGE  6
054 O000000 N
055 A000000 N
055 B000000 N
056  000000 Y
057  000000 N
058 A000000 N
059  000000 Y
060 A000000 Y
060 B000000 Y
061  000000     1000
062 A000000 N
062 B000000   0.0
062 C000000   0.0
062 D000000   0.0
062 E000000   0.0
062 F000000   0.0
062 G000000   0.0
062 H000000   0.0
062 I000000   0.0
062 J000000   0.0
062 K000000   0.0
062 L000000   0.0
062 M000000   0.0
062 N000000   0.0
062 O000000   0.0
062 P000000   0.0
062 Q000000   0.0
062 R000000   0.0
063 A000000   0
063 B000000  0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 Y
066 E000000 N
066 F000000 N
066 G000000 N
067  000000 N
068 A000000 N
068 B000000 N
069  000000 N
070 A010000 Y
070 A020000 N
070 B010000 Y
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
<PAGE>      PAGE  7
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 Y
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 Y
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000    847531
071 B000000    332385
071 C000000   1467028
071 D000000   23
072 A000000  6
072 B000000     3396
072 C000000     1856
072 D000000        0
072 E000000      400
072 F000000     4098
072 G000000        0
072 H000000        0
072 I000000      959
072 J000000        0
072 K000000        0
072 L000000       94
072 M000000        9
072 N000000       90
072 O000000        4
072 P000000        0
072 Q000000        0
072 R000000       31
072 S000000        5
072 T000000     3423
072 U000000        0
<PAGE>      PAGE  8
072 V000000        0
072 W000000       66
072 X000000     8779
072 Y000000        0
072 Z000000    -3127
072AA000000   141466
072BB000000        0
072CC010000        0
072CC020000    30602
072DD010000        0
072DD020000        0
072EE000000    26982
073 A010000   0.0000
073 A020000   0.0000
073 B000000   0.3200
073 C000000   0.0000
074 A000000     7920
074 B000000        0
074 C000000   118306
074 D000000        0
074 E000000        0
074 F000000  1878095
074 G000000        0
074 H000000        0
074 I000000   140898
074 J000000   129365
074 K000000        0
074 L000000    16207
074 M000000      314
074 N000000  2291105
074 O000000   186921
074 P000000        0
074 Q000000        0
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000   143643
074 S000000        0
074 T000000  1960541
074 U010000    72581
074 U020000    16470
074 V010000    16.96
074 V020000    16.62
074 W000000   0.0000
074 X000000    73136
074 Y000000        0
075 A000000        0
075 B000000  1581705
076  000000     0.00
077 A000000 N
078  000000 N
<PAGE>      PAGE  9
080 A000000 ICI MUTUAL INSURANCE CO.
080 C000000    25000
081 A000000 Y
081 B000000  40
082 A000000 N
082 B000000        0
083 A000000 N
083 B000000        0
084 A000000 N
084 B000000        0
085 A000000 Y
085 B000000 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
SIGNATURE   JOSEPH VAN DYKE
TITLE       ASSISTANT TREASURER


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000276914
<NAME> LORD ABBETT DEVELOPING GROWTH FUND, INC.
<SERIES>
   <NUMBER> 001
   <NAME> CLASS A

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-2000
<PERIOD-END>                               JUL-31-1999
<INVESTMENTS-AT-COST>                    1,642,515,199
<INVESTMENTS-AT-VALUE>                   1,878,095,155
<RECEIVABLES>                              145,571,056
<ASSETS-OTHER>                               8,233,771
<OTHER-ITEMS-ASSETS>                       259,204,831
<TOTAL-ASSETS>                           2,291,104,813
<PAYABLE-FOR-SECURITIES>                   186,921,246
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                  143,642,805
<TOTAL-LIABILITIES>                        330,564,051
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 1,587,874,622
<SHARES-COMMON-STOCK>                       72,580,981
<SHARES-COMMON-PRIOR>                       54,423,204
<ACCUMULATED-NII-CURRENT>                  (3,438,456)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                    140,524,640
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   235,579,956
<NET-ASSETS>                             1,230,781,207
<DIVIDEND-INCOME>                            1,855,779
<INTEREST-INCOME>                            3,395,892
<OTHER-INCOME>                                 400,177
<EXPENSES-NET>                               8,779,155
<NET-INVESTMENT-INCOME>                    (3,127,367)
<REALIZED-GAINS-CURRENT>                   141,466,387
<APPREC-INCREASE-CURRENT>                 (30,602,160)
<NET-CHANGE-FROM-OPS>                      107,736,860
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                  (17,593,638)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     29,933,704
<NUMBER-OF-SHARES-REDEEMED>               (12,918,568)
<SHARES-REINVESTED>                          1,142,641
<NET-CHANGE-IN-ASSETS>                     535,583,222
<ACCUMULATED-NII-PRIOR>                      (311,089)
<ACCUMULATED-GAINS-PRIOR>                   26,040,602
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        4,097,846
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              8,812,518
<AVERAGE-NET-ASSETS>                     1,031,555,979
<PER-SHARE-NAV-BEGIN>                            16.25
<PER-SHARE-NII>                                 (0.02)
<PER-SHARE-GAIN-APPREC>                           1.05
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.32)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.96
<EXPENSE-RATIO>                                   0.47


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000276914
<NAME> LORD ABBETT DEVELOPING GROWTH FUND, INC.
<SERIES>
   <NUMBER> 002
   <NAME> CLASS B

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-2000
<PERIOD-END>                               JUL-31-1999
<INVESTMENTS-AT-COST>                    1,642,515,199
<INVESTMENTS-AT-VALUE>                   1,878,095,155
<RECEIVABLES>                              145,571,056
<ASSETS-OTHER>                               8,233,771
<OTHER-ITEMS-ASSETS>                       259,204,831
<TOTAL-ASSETS>                           2,291,104,813
<PAYABLE-FOR-SECURITIES>                   186,921,246
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                  143,642,805
<TOTAL-LIABILITIES>                        330,564,051
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 1,587,874,622
<SHARES-COMMON-STOCK>                       16,469,813
<SHARES-COMMON-PRIOR>                       12,329,866
<ACCUMULATED-NII-CURRENT>                  (3,438,456)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                    140,524,640
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   235,579,956
<NET-ASSETS>                               273,658,118
<DIVIDEND-INCOME>                            1,855,779
<INTEREST-INCOME>                            3,395,892
<OTHER-INCOME>                                 400,177
<EXPENSES-NET>                               8,779,155
<NET-INVESTMENT-INCOME>                    (3,127,367)
<REALIZED-GAINS-CURRENT>                   141,466,387
<APPREC-INCREASE-CURRENT>                 (30,602,160)
<NET-CHANGE-FROM-OPS>                      107,736,860
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (4,003,130)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      5,344,525
<NUMBER-OF-SHARES-REDEEMED>                (1,459,452)
<SHARES-REINVESTED>                            254,874
<NET-CHANGE-IN-ASSETS>                     535,583,222
<ACCUMULATED-NII-PRIOR>                      (311,089)
<ACCUMULATED-GAINS-PRIOR>                   26,040,602
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        4,097,846
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              8,812,518
<AVERAGE-NET-ASSETS>                       225,154,465
<PER-SHARE-NAV-BEGIN>                            15.98
<PER-SHARE-NII>                                 (0.08)
<PER-SHARE-GAIN-APPREC>                           1.04
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.32)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.62
<EXPENSE-RATIO>                                   0.84


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000276914
<NAME> LORD ABBETT DEVELOPING GROWTH FUND, INC.
<SERIES>
   <NUMBER> 003
   <NAME> CLASS C

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-2000
<PERIOD-END>                               JUL-31-1999
<INVESTMENTS-AT-COST>                    1,642,515,199
<INVESTMENTS-AT-VALUE>                   1,878,095,155
<RECEIVABLES>                              145,571,056
<ASSETS-OTHER>                               8,233,771
<OTHER-ITEMS-ASSETS>                       259,204,831
<TOTAL-ASSETS>                           2,291,104,813
<PAYABLE-FOR-SECURITIES>                   186,921,246
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                  143,642,805
<TOTAL-LIABILITIES>                        330,564,051
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 1,587,874,622
<SHARES-COMMON-STOCK>                       13,002,512
<SHARES-COMMON-PRIOR>                        8,238,938
<ACCUMULATED-NII-CURRENT>                  (3,438,456)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                    140,524,640
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   235,579,956
<NET-ASSETS>                               216,252,566
<DIVIDEND-INCOME>                            1,855,779
<INTEREST-INCOME>                            3,395,892
<OTHER-INCOME>                                 400,177
<EXPENSES-NET>                               8,779,155
<NET-INVESTMENT-INCOME>                    (3,127,367)
<REALIZED-GAINS-CURRENT>                   141,466,387
<APPREC-INCREASE-CURRENT>                 (30,602,160)
<NET-CHANGE-FROM-OPS>                      107,736,860
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (2,759,909)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      6,523,103
<NUMBER-OF-SHARES-REDEEMED>                (1,933,739)
<SHARES-REINVESTED>                            174,210
<NET-CHANGE-IN-ASSETS>                     535,583,222
<ACCUMULATED-NII-PRIOR>                      (311,089)
<ACCUMULATED-GAINS-PRIOR>                   26,040,602
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        4,097,846
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              8,812,518
<AVERAGE-NET-ASSETS>                       165,375,521
<PER-SHARE-NAV-BEGIN>                            16.00
<PER-SHARE-NII>                                 (0.08)
<PER-SHARE-GAIN-APPREC>                           1.03
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.32)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.63
<EXPENSE-RATIO>                                   0.83


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000276914
<NAME> LORD ABBETT DEVELOPING GROWTH FUND, INC.
<SERIES>
   <NUMBER> 004
   <NAME> CLASS P

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-2000
<PERIOD-END>                               JUL-31-1999
<INVESTMENTS-AT-COST>                    1,642,515,199
<INVESTMENTS-AT-VALUE>                   1,878,095,155
<RECEIVABLES>                              145,571,056
<ASSETS-OTHER>                               8,233,771
<OTHER-ITEMS-ASSETS>                       259,204,831
<TOTAL-ASSETS>                           2,291,104,813
<PAYABLE-FOR-SECURITIES>                   186,921,246
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                  143,642,805
<TOTAL-LIABILITIES>                        330,564,051
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 1,587,874,622
<SHARES-COMMON-STOCK>                        5,218,316
<SHARES-COMMON-PRIOR>                        3,437,591
<ACCUMULATED-NII-CURRENT>                  (3,438,456)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                    140,524,640
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   235,579,956
<NET-ASSETS>                                88,098,924
<DIVIDEND-INCOME>                            1,855,779
<INTEREST-INCOME>                            3,395,892
<OTHER-INCOME>                                 400,177
<EXPENSES-NET>                               8,779,155
<NET-INVESTMENT-INCOME>                    (3,127,367)
<REALIZED-GAINS-CURRENT>                   141,466,387
<APPREC-INCREASE-CURRENT>                 (30,602,160)
<NET-CHANGE-FROM-OPS>                      107,736,860
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (1,129,243)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      2,855,510
<NUMBER-OF-SHARES-REDEEMED>                (1,150,633)
<SHARES-REINVESTED>                             75,848
<NET-CHANGE-IN-ASSETS>                     535,583,222
<ACCUMULATED-NII-PRIOR>                      (311,089)
<ACCUMULATED-GAINS-PRIOR>                   26,040,602
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        4,097,846
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              8,812,518
<AVERAGE-NET-ASSETS>                        69,138,084
<PER-SHARE-NAV-BEGIN>                            16.19
<PER-SHARE-NII>                                 (0.03)
<PER-SHARE-GAIN-APPREC>                           1.04
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.32)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.88
<EXPENSE-RATIO>                                   0.56


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000276914
<NAME> LORD ABBETT DEVELOPING GROWTH FUND, INC.
<SERIES>
   <NUMBER> 005
   <NAME> CLASS Y

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-2000
<PERIOD-END>                               JUL-31-1999
<INVESTMENTS-AT-COST>                    1,642,515,199
<INVESTMENTS-AT-VALUE>                   1,878,095,155
<RECEIVABLES>                              145,571,056
<ASSETS-OTHER>                               8,233,771
<OTHER-ITEMS-ASSETS>                       259,204,831
<TOTAL-ASSETS>                           2,291,104,813
<PAYABLE-FOR-SECURITIES>                   186,921,246
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                  143,642,805
<TOTAL-LIABILITIES>                        330,564,051
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 1,587,874,622
<SHARES-COMMON-STOCK>                        8,907,765
<SHARES-COMMON-PRIOR>                        4,629,039
<ACCUMULATED-NII-CURRENT>                  (3,438,456)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                    140,524,640
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   235,579,956
<NET-ASSETS>                               151,749,947
<DIVIDEND-INCOME>                            1,855,779
<INTEREST-INCOME>                            3,395,892
<OTHER-INCOME>                                 400,177
<EXPENSES-NET>                               8,779,155
<NET-INVESTMENT-INCOME>                    (3,127,367)
<REALIZED-GAINS-CURRENT>                   141,466,387
<APPREC-INCREASE-CURRENT>                 (30,602,160)
<NET-CHANGE-FROM-OPS>                      107,736,860
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (1,496,429)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      5,614,147
<NUMBER-OF-SHARES-REDEEMED>                (1,435,183)
<SHARES-REINVESTED>                             99,762
<NET-CHANGE-IN-ASSETS>                     535,583,222
<ACCUMULATED-NII-PRIOR>                      (311,089)
<ACCUMULATED-GAINS-PRIOR>                   26,040,602
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        4,097,846
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              8,812,518
<AVERAGE-NET-ASSETS>                        90,480,535
<PER-SHARE-NAV-BEGIN>                            16.30
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                           1.06
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.32)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              17.04
<EXPENSE-RATIO>                                   0.34


</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission