MAINSTAY INSTITUTIONAL FUNDS INC
NSAR-A, 1996-08-28
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<PAGE>      PAGE  1
000 A000000 06/30/96
000 C000000 868307
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 MAINSTAY INSTITUTIONAL FUNDS INC.
001 B000000 811-6175
001 C000000 2125768170
002 A000000 51 MADISON AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10010
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000 11
007 C010100  1
007 C020100 MONEY MARKET FUND
007 C030100 N
007 C010200  2
007 C020200 SHORT-TERM BOND FUND
007 C030200 N
007 C010300  3
007 C020300 BOND FUND
007 C030300 N
007 C010400  4
007 C020400 INDEXED BOND FUND
007 C030400 N
007 C010500  5
007 C020500 MULTI-ASSET FUND
007 C030500 N
007 C010600  6
007 C020600 VALUE EQUITY FUND
007 C030600 N
007 C010700  7
007 C020700 GROWTH EQUITY FUND
007 C030700 N
007 C010800  8
007 C020800 INDEXED EQUITY FUND
007 C030800 N
007 C010900  9
007 C020900 EAFE INDEX FUND
007 C030900 N
007 C011000 10
007 C021000 INTERNATIONAL BOND FUND
<PAGE>      PAGE  2
007 C031000 N
007 C011100 11
007 C021100 INTERNATIONAL EQUITY FUND
007 C031100 N
007 C011200 12
007 C011300 13
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
010 A00AA01 NEW YORK LIFE INSURANCE COMPANY
010 C01AA01 NEW YORK
010 C02AA01 NY
010 C03AA01 10010
011 A00AA01 NYLIFE DISTRIBUTORS INC.
011 B00AA01 8-46655
011 C01AA01 NEW YORK
011 C02AA01 NY
011 C03AA01 10010
012 A00AA01 BOSTON FINANCIAL DATA SERVICES
012 B00AA01 84-0896
012 C01AA01 NORTH QUINCY
012 C02AA01 MA
012 C03AA01 02171
013 A00AA01 PRICE WATERHOUSE
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10022
014 A00AA01 NYLIFE SECURITIES INC.
014 B00AA01 8-15517
014 A00AA02 NYLIFE DISTRIBUTORS INC.
014 B00AA02 8-46655
015 A00AA01 BANK OF NEW YORK
015 B00AA01 C
015 C01AA01 NEW YORK
015 C02AA01 NY
015 C03AA01 10286
015 E01AA01 X
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   11
019 C00AA00 THECOMPANY
020 A000001 PAINEWEBBER
020 C000001    117
020 A000002 MERRILL LYNCH CORP.
020 C000002     74
020 A000003 KLEINWORT BENSON NORTH AMERICA INC.
020 C000003     68
<PAGE>      PAGE  3
020 A000004 PEREGRINE BROKERAGE INC.
020 C000004     50
020 A000005 SALOMON BROTHERS
020 C000005     46
020 A000006 BEAR STEARNS
020 C000006     39
020 A000007 BRIDE TRADING
020 C000007     31
020 A000008 OPPENHEIMER
020 C000008     31
020 A000009 AUTRANET
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020 A000010 MONTGOMERY SECURITIES
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021  000000      868
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022 C000001    864257
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022 A000002 FIRST BOSTON
022 C000002    318145
022 D000002    478060
022 A000003 AMERICAN EXPRESS
022 C000003    663448
022 D000003      5452
022 A000004 FORD MOTOR
022 C000004    429818
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022 A000007 BENEFICIAL FINANCE
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022 A000008 DEUTSCHE BANK AG
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022 D000008    144256
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022 A000010 FUJI
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022 D000010     63760
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
077 B000000 N
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008 A000101 NEW YORK LIFE INSURANCE COMPANY
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<PAGE>      PAGE  6
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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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008 A000201 MACKAY-SHIELDS FINANCIAL CORPORATION
008 B000201 A
008 C000201 801-5594
008 D010201 NEW YORK
008 D020201 NY
008 D030201 10019
024  000200 Y
025 A000201 AMERICAN EXPRESS CREDIT
025 C000201 D
025 D000201    2000
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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070 I010200 N
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
008 A000301 MACKAY-SHIELDS FINANCIAL CORPORATION
008 B000301 A
008 C000301 801-5594
008 D010301 NEW YORK
008 D020301 NY
008 D030301 10019
024  000300 Y
025 A000301 ASSOCIATES CORP.
025 C000301 D
025 D000301    3060
025 A000302 MERRILL LYNCH & CO. INC.
025 C000302 D
025 D000302    1876
025 A000303 SALOMON INC.
025 C000303 D
025 D000303    1642
025 A000304 AMERICAN EXPRESS CREDIT
025 C000304 D
025 D000304    4000
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025 D000307       0
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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070 I020300 N
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070 J020300 N
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070 K020300 N
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070 L020300 Y
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
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008 A000401 MONITOR CAPITAL ADVISORS, INC.
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<PAGE>      PAGE  19
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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<PAGE>      PAGE  25
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<PAGE>      PAGE  26
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<PAGE>      PAGE  27
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<PAGE>      PAGE  34
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<PAGE>      PAGE  38
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066 F000800 N
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070 C020800 N
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070 H010800 Y
070 H020800 N
070 I010800 N
070 I020800 N
070 J010800 N
070 J020800 N
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070 K020800 N
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070 L020800 Y
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070 M020800 N
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070 N020800 N
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070 O020800 N
<PAGE>      PAGE  39
070 P010800 N
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070 Q010800 N
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070 R010800 N
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<PAGE>      PAGE  40
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<PAGE>      PAGE  41
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050  000900 N
051  000900 N
<PAGE>      PAGE  42
052  000900 N
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058 A000900 N
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066 D000900 N
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<PAGE>      PAGE  43
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070 H020900 N
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070 I020900 N
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070 J020900 N
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070 K020900 N
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070 L020900 Y
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070 N020900 N
070 O010900 Y
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070 P020900 N
070 Q010900 N
070 Q020900 N
070 R010900 N
070 R020900 N
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<PAGE>      PAGE  44
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008 A001001 MACKAY-SHIELDS FINANCIAL CORPORATION
008 B001001 A
008 C001001 801-5594
008 D011001 NEW YORK
008 D021001 NY
<PAGE>      PAGE  45
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024  001000 Y
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<PAGE>      PAGE  46
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<PAGE>      PAGE  47
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<PAGE>      PAGE  48
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064 B001000 N
066 A001000 N
067  001000 N
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070 A021000 N
070 B011000 N
070 B021000 N
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070 C021000 N
070 D011000 N
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070 E021000 N
070 F011000 N
070 F021000 N
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070 G021000 N
070 H011000 N
070 H021000 N
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070 I021000 N
070 J011000 Y
070 J021000 N
070 K011000 Y
070 K021000 N
<PAGE>      PAGE  49
070 L011000 Y
070 L021000 Y
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<PAGE>      PAGE  50
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008 A001101 MACKAY-SHIELDS FINANCIAL CORPORATION
008 B001101 A
008 C001101 801-5594
008 D011101 NEW YORK
008 D021101 NY
008 D031101 10019
024  001100 Y
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025 D001102      12
025 A001103 BANK OF AMERICA (FORWARD CONTRACT)
<PAGE>      PAGE  51
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025 A001108 REPUBLIC NATIONAL BANK (F0RWARD CONTRACT)
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<PAGE>      PAGE  52
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<PAGE>      PAGE  53
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<PAGE>      PAGE  54
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070 A011100 Y
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070 C011100 N
070 C021100 N
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<PAGE>      PAGE  55
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070 Q021100 N
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<PAGE>      PAGE  57
SIGNATURE   JENNIFER B. MCHUGH                           
TITLE       ATTORNEY            
 


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</TABLE>

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</TABLE>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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   <NAME> MAINSTAY INSTITUTIONAL INDEXED BOND FUND-CLASS S
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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   <NAME> MAINSTAY INSTITUTIONAL MULTI ASSET FUND-CLASS D
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<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
<SERIES>
   <NUMBER> 052
   <NAME> MAINSTAY INSTITUTIONAL MULTI ASSET FUND-CLASS S
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<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
<SERIES>
   <NUMBER> 061
   <NAME> INSTITUTIONAL VALUE EQUITY FUND-CLASS D
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000868307
<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
<SERIES>
   <NUMBER> 062
   <NAME> INSTITUTIONAL VALUE EQUITY FUND-CLASS S
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000868307
<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
<SERIES>
   <NUMBER> 071
   <NAME> MAINSTAY INSTITUTIONAL GROWTH EQUITY FUND-CLASS D
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<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

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<CIK> 0000868307
<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
<SERIES>
   <NUMBER> 072
   <NAME> MAINSTAY INSTITUTIONAL GROWTH EQUITY FUND-CLASS S
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000868307
<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
<SERIES>
   <NUMBER> 081
   <NAME> INDEXED EQUITY FUND-CLASS D
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</TABLE>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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   <NAME> MAINSTAY INSTITUTIONAL EAFE INDEX FUND-CLASS D
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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   <NAME> INSTITUTIONAL INTERNATIONAL BOND FUND-CLASS S
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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</TABLE>

<TABLE> <S> <C>

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<NAME> MAINSTAY INSTITUTIONAL FUNDS INC.
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   <NAME> INSTITUTIONAL INTERNATIONAL EQUITY FUND-CLASS S
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<AVERAGE-NET-ASSETS>                       106,125,000
<PER-SHARE-NAV-BEGIN>                           10.330
<PER-SHARE-NII>                                  0.060
<PER-SHARE-GAIN-APPREC>                           0.79
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.18
<EXPENSE-RATIO>                                   1.25
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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