WARBURG PINCUS INSTITUTIONAL FUND INC
NSAR-B, 1997-12-29
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<PAGE>      PAGE  1
000 B000000 10/31/97
000 C000000 0000887589
000 D000000 N
000 E000000 NF
000 F000000 Y
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000 I000000 3.0.a
000 J000000 A
001 A000000 WARBURG, PINCUS INSTITUTIONAL FUND, INC.
001 B000000 811-6670
001 C000000 3027912919
002 A000000 400 BELLEVUE PARKWAY
002 B000000 WILMINGTON
002 C000000 DE
002 D010000 19809
003  000000 N
004  000000 N
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007 A000000 Y
007 B000000  8
007 C010100  1
007 C020100 INTERNATIONAL EQUITY PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 SMALL COMPANY GROWTH PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 EMERGING MARKETS PORTFOLIO
007 C030300 N
007 C010400  4
007 C020400 MANAGED EAFE COUNTRIES PORTFOLIO
007 C030400 N
007 C010500  5
007 C020500 VALUE PORTFOLIO
007 C030500 N
007 C010600  6
007 C020600 POST-VENTURE CAPITAL PORTFOLIO
007 C030600 N
007 C010700  7
007 C020700 SMALL COMPANY VALUE PORTFOLIO
007 C030700 N
007 C010800  8
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<PAGE>      PAGE  2
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008 A00AA01 WARBURG PINCUS ASSET MANAGEMENT, INC.
008 B00AA01 A
008 C00AA01 801-28496
008 D01AA01 NEW YORK
008 D02AA01 NY
008 D03AA01 10017
008 D04AA01 3147
010 A00AA01 PFPC INC.
010 B00AA01 85-1196
010 C01AA01 WILMINGTON
010 C02AA01 DE
010 C03AA01 19809
010 A00AA02 COUNSELLORS FUNDS SERVICE, INC.
010 B00AA02 801-00000
010 C01AA02 NEW YORK
010 C02AA02 NY
010 C03AA02 10017
010 C04AA02 3147
012 A00AA01 BOSTON FINANCIAL DATA SERVICES, INC.
012 B00AA01 84-00896
012 C01AA01 NORTH QUINCY
012 C02AA01 MA
012 C03AA01 02171
013 A00AA01 COOPERS & LYBRAND L.L.P.
<PAGE>      PAGE  3
013 B01AA01 PHILADELPHIA
013 B02AA01 PA
013 B03AA01 19103
014 A00AA01 COUNSELLORS SECURITIES INC.
014 B00AA01 8-32482
020 A000001 MERRILL LYNCH
020 B000001 13-5674085
020 C000001    579
020 A000002 S.G. WARBURG & CO., INC.
020 B000002 13-3340045
020 C000002    415
020 A000003 JAMES CAPEL
020 B000003 52-1348224
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020 A000004 BARCLAY DE ZOETTE WEDD
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<PAGE>      PAGE  4
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022 A000009 S.G. WARBURG & CO.
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022 A000010 C.S. FIRST BOSTON CORP.
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
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075 B000300    37637
076  000300     0.00
015 A000401 DELETE
015 A000402 PNC BANK, N.A.
015 B000402 S
015 C010402 PHILADELPHIA
015 C020402 PA
015 C030402 19101
015 E040402 X
018  000400 Y
019 A000400 Y
019 B000400   36
019 C000400 WARBURG PI
024  000400 Y
025 A000401 GOLMAN SACHS
025 B000401 13-5108880
025 C000401 D
025 D000401     268
025 D000402       0
025 D000403       0
025 D000404       0
025 D000405       0
025 D000406       0
025 D000407       0
025 D000408       0
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      2672
028 E020400         0
028 E030400         0
028 E040400         0
028 F010400      2160
028 F020400         0
<PAGE>      PAGE  20
028 F030400         0
028 F040400         0
028 G010400      4832
028 G020400         0
028 G030400         0
028 G040400         0
028 H000400         0
045  000400 Y
046  000400 N
047  000400 Y
048  000400  0.800
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
058 A000400 N
059  000400 Y
060 A000400 Y
060 B000400 Y
061  000400  3000000
066 A000400 Y
066 B000400 N
066 C000400 Y
066 D000400 N
066 E000400 N
066 F000400 N
066 G000400 N
067  000400 N
068 A000400 N
068 B000400 Y
069  000400 N
070 A010400 Y
070 A020400 Y
<PAGE>      PAGE  21
070 B010400 Y
070 B020400 N
070 C010400 Y
070 C020400 N
070 D010400 Y
070 D020400 N
070 E010400 Y
070 E020400 N
070 F010400 Y
070 F020400 N
070 G010400 Y
070 G020400 N
070 H010400 Y
070 H020400 N
070 I010400 Y
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 Y
070 N010400 Y
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 Y
070 Q020400 N
070 R010400 Y
070 R020400 N
071 A000400      5192
071 B000400       668
071 C000400      2206
071 D000400   30
072 A000400  7
072 B000400       15
072 C000400       19
072 D000400        0
072 E000400        0
072 F000400       13
072 G000400        3
072 H000400        0
072 I000400        0
072 J000400       14
072 K000400        0
072 L000400        1
072 M000400        1
<PAGE>      PAGE  22
072 N000400        7
072 O000400        0
072 P000400        0
072 Q000400        0
072 R000400       14
072 S000400        0
072 T000400        0
072 U000400       58
072 V000400        0
072 W000400       10
072 X000400      121
072 Y000400      106
072 Z000400       19
072AA000400       91
072BB000400        0
072CC010400        0
072CC020400      144
072DD010400        0
072DD020400        0
072EE000400        0
073 A010400   0.0000
073 A020400   0.0000
073 B000400   0.0000
073 C000400   0.0000
074 A000400        0
074 B000400      268
074 C000400        0
074 D000400        0
074 E000400        0
074 F000400     4453
074 G000400        0
074 H000400        0
074 I000400        3
074 J000400       94
074 K000400       33
074 L000400       23
074 M000400       57
074 N000400     4931
074 O000400      112
074 P000400        0
074 Q000400        0
074 R010400        0
074 R020400        0
074 R030400        0
074 R040400       23
074 S000400        0
074 T000400     4796
074 U010400      434
074 U020400        0
074 V010400    11.06
074 V020400     0.00
<PAGE>      PAGE  23
074 W000400   0.0000
074 X000400        2
074 Y000400        0
075 A000400        0
075 B000400     2700
076  000400     0.00
015 A000501 PNC BANK, N.A.
015 B000501 C
015 C010501 PHILADELPHIA
015 C020501 PA
015 C030501 19103
015 E010501 X
018  000500 Y
019 A000500 Y
019 B000500   36
019 C000500 WARBURG PI
024  000500 Y
025 A000501 GOLMAN SACHS
025 B000501 13-5108880
025 C000501 D
025 D000501    1706
025 D000502       0
025 D000503       0
025 D000504       0
025 D000505       0
025 D000506       0
025 D000507       0
025 D000508       0
028 A010500         0
028 A020500         0
028 A030500         0
028 A040500         0
028 B010500         0
028 B020500         0
028 B030500         0
028 B040500         0
028 C010500      1600
028 C020500         0
028 C030500         0
028 C040500         0
028 D010500      5709
028 D020500         0
028 D030500         0
028 D040500         0
028 E010500      7069
028 E020500         0
028 E030500         0
028 E040500        18
028 F010500      1654
028 F020500         0
028 F030500         0
<PAGE>      PAGE  24
028 F040500       316
028 G010500     16032
028 G020500         0
028 G030500         0
028 G040500       334
028 H000500         0
045  000500 Y
046  000500 N
047  000500 Y
048  000500  0.750
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
048 K010500        0
048 K020500 0.000
058 A000500 N
059  000500 Y
060 A000500 Y
060 B000500 Y
061  000500  1000000
066 A000500 Y
066 B000500 N
066 C000500 N
066 D000500 N
066 E000500 N
066 F000500 N
066 G000500 Y
067  000500 N
068 A000500 N
068 B000500 N
069  000500 N
070 A010500 Y
070 A020500 Y
070 B010500 Y
<PAGE>      PAGE  25
070 B020500 N
070 C010500 Y
070 C020500 N
070 D010500 Y
070 D020500 N
070 E010500 Y
070 E020500 N
070 F010500 Y
070 F020500 N
070 G010500 Y
070 G020500 N
070 H010500 Y
070 H020500 N
070 I010500 Y
070 I020500 N
070 J010500 Y
070 J020500 N
070 K010500 Y
070 K020500 N
070 L010500 Y
070 L020500 N
070 M010500 Y
070 M020500 N
070 N010500 Y
070 N020500 N
070 O010500 Y
070 O020500 N
070 P010500 Y
070 P020500 N
070 Q010500 Y
070 Q020500 N
070 R010500 Y
070 R020500 N
071 A000500     16626
071 B000500      2392
071 C000500      6872
071 D000500   35
072 A000500  4
072 B000500       21
072 C000500       49
072 D000500        0
072 E000500        0
072 F000500       22
072 G000500        6
072 H000500        0
072 I000500        0
072 J000500       13
072 K000500        0
072 L000500        2
072 M000500        1
072 N000500        6
<PAGE>      PAGE  26
072 O000500        0
072 P000500        0
072 Q000500        0
072 R000500        4
072 S000500        1
072 T000500        0
072 U000500       13
072 V000500        0
072 W000500        4
072 X000500       72
072 Y000500       50
072 Z000500       48
072AA000500      176
072BB000500      107
072CC010500        0
072CC020500      250
072DD010500        0
072DD020500        0
072EE000500        0
073 A010500   0.0000
073 A020500   0.0000
073 B000500   0.0000
073 C000500   0.0000
074 A000500        0
074 B000500     1706
074 C000500        0
074 D000500      161
074 E000500      592
074 F000500    13298
074 G000500        0
074 H000500        0
074 I000500        2
074 J000500      535
074 K000500        0
074 L000500      210
074 M000500        0
074 N000500    16504
074 O000500      609
074 P000500        0
074 Q000500        0
074 R010500        0
074 R020500        0
074 R030500        0
074 R040500      330
074 S000500        0
074 T000500    15565
074 U010500     1464
074 U020500        0
074 V010500    10.64
074 V020500     0.00
074 W000500   0.0000
<PAGE>      PAGE  27
074 X000500        5
074 Y000500        0
075 A000500        0
075 B000500     8803
076  000500     0.00
015 A000601 PNC BANK, N.A.
015 B000601 C
015 C010601 PHILADELPHIA
015 C020601 PA
015 C030601 19103
015 E010601 X
015 A000602 STATE STREET BANK & TRUST CO.
015 B000602 C
015 C010602 BOSTON
015 C020602 MA
015 C030602 02110
015 E040602 X
018  000600 Y
019 A000600 Y
019 B000600   36
019 C000600 WARBURG PI
024  000600 N
025 D000601       0
025 D000602       0
025 D000603       0
025 D000604       0
025 D000605       0
025 D000606       0
025 D000607       0
025 D000608       0
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
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      1075
<PAGE>      PAGE  28
028 F020600         0
028 F030600         0
028 F040600         0
028 G010600      1075
028 G020600         0
028 G030600         0
028 G040600         0
028 H000600         0
045  000600 Y
046  000600 N
047  000600 Y
048  000600  1.100
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
058 A000600 N
059  000600 Y
060 A000600 Y
060 B000600 Y
061  000600  1000000
066 A000600 Y
066 B000600 N
066 C000600 N
066 D000600 Y
066 E000600 N
066 F000600 N
066 G000600 N
067  000600 N
068 A000600 N
068 B000600 N
069  000600 N
070 A010600 Y
<PAGE>      PAGE  29
070 A020600 N
070 B010600 Y
070 B020600 N
070 C010600 Y
070 C020600 N
070 D010600 Y
070 D020600 N
070 E010600 Y
070 E020600 N
070 F010600 Y
070 F020600 N
070 G010600 Y
070 G020600 N
070 H010600 Y
070 H020600 N
070 I010600 Y
070 I020600 N
070 J010600 Y
070 J020600 N
070 K010600 Y
070 K020600 N
070 L010600 Y
070 L020600 N
070 M010600 Y
070 M020600 N
070 N010600 Y
070 N020600 N
070 O010600 Y
070 O020600 N
070 P010600 Y
070 P020600 N
070 Q010600 Y
070 Q020600 N
070 R010600 Y
070 R020600 N
071 A000600         0
071 B000600         0
071 C000600         0
071 D000600    0
072 A000600  0
072 B000600        0
072 C000600        0
072 D000600        0
072 E000600        0
072 F000600        0
072 G000600        0
072 H000600        0
072 I000600        0
072 J000600        0
072 K000600        0
072 L000600        0
<PAGE>      PAGE  30
072 M000600        0
072 N000600        0
072 O000600        0
072 P000600        0
072 Q000600        0
072 R000600        0
072 S000600        0
072 T000600        0
072 U000600        0
072 V000600        0
072 W000600        0
072 X000600        0
072 Y000600        0
072 Z000600        0
072AA000600        0
072BB000600        0
072CC010600        0
072CC020600        0
072DD010600        0
072DD020600        0
072EE000600        0
073 A010600   0.0000
073 A020600   0.0000
073 B000600   0.0000
073 C000600   0.0000
074 A000600        1
074 B000600        0
074 C000600        0
074 D000600        0
074 E000600        0
074 F000600        0
074 G000600        0
074 H000600        0
074 I000600        0
074 J000600        0
074 K000600        0
074 L000600        0
074 M000600        0
074 N000600        1
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074 P000600        0
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074 R020600        0
074 R030600        0
074 R040600        0
074 S000600        0
074 T000600        1
074 U010600        0
074 U020600        0
074 V010600    10.00
<PAGE>      PAGE  31
074 V020600     0.00
074 W000600   0.0000
074 X000600        1
074 Y000600        0
075 A000600        0
075 B000600        1
076  000600     0.00
015 A000701 PNC BANK, N.A.
015 B000701 C
015 C010701 PHILADELPHIA
015 C020701 PA
015 C030701 19103
015 E010701 X
015 A000702 STATE STREET BANK & TRUST CO.
015 B000702 C
015 C010702 BOSTON
015 C020702 MA
015 C030702 02110
015 E040702 X
018  000700 Y
019 A000700 Y
019 B000700   36
019 C000700 WARBURG PI
024  000700 N
025 D000701       0
025 D000702       0
025 D000703       0
025 D000704       0
025 D000705       0
025 D000706       0
025 D000707       0
025 D000708       0
028 A010700         0
028 A020700         0
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028 A040700         0
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028 C030700         0
028 C040700         0
028 D010700         0
028 D020700         0
028 D030700         0
028 D040700         0
028 E010700         0
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028 E030700         0
<PAGE>      PAGE  32
028 E040700         0
028 F010700      1075
028 F020700         0
028 F030700         0
028 F040700         0
028 G010700      1075
028 G020700         0
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028 G040700         0
028 H000700         0
045  000700 Y
046  000700 N
047  000700 Y
048  000700  0.900
048 A010700        0
048 A020700 0.000
048 B010700        0
048 B020700 0.000
048 C010700        0
048 C020700 0.000
048 D010700        0
048 D020700 0.000
048 E010700        0
048 E020700 0.000
048 F010700        0
048 F020700 0.000
048 G010700        0
048 G020700 0.000
048 H010700        0
048 H020700 0.000
048 I010700        0
048 I020700 0.000
048 J010700        0
048 J020700 0.000
048 K010700        0
048 K020700 0.000
058 A000700 N
059  000700 Y
060 A000700 Y
060 B000700 Y
061  000700  1000000
066 A000700 Y
066 B000700 N
066 C000700 Y
066 D000700 N
066 E000700 N
066 F000700 N
066 G000700 N
067  000700 N
068 A000700 N
068 B000700 N
<PAGE>      PAGE  33
069  000700 N
070 A010700 Y
070 A020700 N
070 B010700 Y
070 B020700 N
070 C010700 Y
070 C020700 N
070 D010700 Y
070 D020700 N
070 E010700 Y
070 E020700 N
070 F010700 Y
070 F020700 N
070 G010700 Y
070 G020700 N
070 H010700 Y
070 H020700 N
070 I010700 Y
070 I020700 N
070 J010700 Y
070 J020700 N
070 K010700 Y
070 K020700 N
070 L010700 Y
070 L020700 N
070 M010700 Y
070 M020700 N
070 N010700 Y
070 N020700 N
070 O010700 Y
070 O020700 N
070 P010700 Y
070 P020700 N
070 Q010700 Y
070 Q020700 N
070 R010700 Y
070 R020700 N
071 A000700         0
071 B000700         0
071 C000700         0
071 D000700    0
072 A000700  0
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072 F000700        0
072 G000700        0
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072 I000700        0
072 J000700        0
<PAGE>      PAGE  34
072 K000700        0
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072CC010700        0
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073 A010700   0.0000
073 A020700   0.0000
073 B000700   0.0000
073 C000700   0.0000
074 A000700        1
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<PAGE>      PAGE  35
074 U020700        0
074 V010700    10.00
074 V020700     0.00
074 W000700   0.0000
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075 A000700        0
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076  000700     0.00
015 A000801 PNC BANK, N.A.
015 B000801 C
015 C010801 PHILADELPHIA
015 C020801 PA
015 C030801 19103
015 E010801 X
015 A000802 STATE STREET BANK & TRUST CO.
015 B000802 C
015 C010802 BOSTON
015 C020802 MA
015 C030802 02110
015 E040802 X
018  000800 Y
019 A000800 Y
019 B000800   36
019 C000800 WARBURG PI
024  000800 N
028 A010800         0
028 A020800         0
028 A030800         0
028 A040800         0
028 B010800         0
028 B020800         0
028 B030800         0
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028 F010800      1075
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028 F040800         0
028 G010800      1075
<PAGE>      PAGE  36
028 G020800         0
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045  000800 Y
046  000800 N
047  000800 Y
048  000800  1.100
048 A010800        0
048 A020800 0.000
048 B010800        0
048 B020800 0.000
048 C010800        0
048 C020800 0.000
048 D010800        0
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048 E010800        0
048 E020800 0.000
048 F010800        0
048 F020800 0.000
048 G010800        0
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048 H010800        0
048 H020800 0.000
048 I010800        0
048 I020800 0.000
048 J010800        0
048 J020800 0.000
048 K010800        0
048 K020800 0.000
058 A000800 N
059  000800 Y
060 A000800 Y
060 B000800 Y
061  000800  1000000
066 A000800 Y
066 B000800 N
066 C000800 Y
066 D000800 N
066 E000800 N
066 F000800 N
066 G000800 N
067  000800 N
068 A000800 N
068 B000800 N
069  000800 N
070 A010800 Y
070 A020800 N
070 B010800 Y
070 B020800 N
070 C010800 Y
<PAGE>      PAGE  37
070 C020800 N
070 D010800 Y
070 D020800 N
070 E010800 Y
070 E020800 N
070 F010800 Y
070 F020800 N
070 G010800 Y
070 G020800 N
070 H010800 Y
070 H020800 N
070 I010800 Y
070 I020800 N
070 J010800 Y
070 J020800 N
070 K010800 Y
070 K020800 N
070 L010800 Y
070 L020800 N
070 M010800 Y
070 M020800 N
070 N010800 Y
070 N020800 N
070 O010800 Y
070 O020800 N
070 P010800 Y
070 P020800 N
070 Q010800 Y
070 Q020800 N
070 R010800 Y
070 R020800 N
071 A000800         0
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<PAGE>      PAGE  38
072 Q000800        0
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SIGNATURE   KATHY THREN                                  
TITLE       COUNSEL             
 


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