ALLIANCE INSTITUTIONAL RESERVES INC
NSAR-A, 1999-12-29
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<PAGE>      PAGE  1
000 A000000 10/31/1999
000 C000000 0000862021
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 ALLIANCE INSTITUTIONAL RESERVES
001 B000000 811-06068
001 C000000 2013194105
002 A000000 500 PLAZA DRIVE
002 B000000 SECAUCUS
002 C000000 NJ
002 D010000 07094
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  5
007 C010100  1
007 C020100 PRIME PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 GOVERNMENT PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 TAX-FREE PORTFOLIO
007 C030300 N
007 C010400  4
007 C020400 TRUST PORTFOLIO
007 C030400 N
007 C010500  5
007 C020500 TREASURY PORTFOLIO
007 C030500 N
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A00AA01 ALLIANCE CAPITAL MANAGEMENT L.P.
008 B00AA01 A
008 C00AA01 801-32361
008 D01AA01 NEW YORK
008 D02AA01 NY
008 D03AA01 10105
011 A00AA01 ALLIANCE FUND SERVICES, INC.
011 B00AA01 8-30851
011 C01AA01 NEW YORK
<PAGE>      PAGE  2
011 C02AA01 NY
011 C03AA01 10105
012 A00AA01 ALLIANCE FUND SERVICES, INC.
012 B00AA01 84-001187
012 C01AA01 SECUACUS
012 C02AA01 NJ
012 C03AA01 07096
013 A00AA01 PRICEWATERHOUSECOOPERS LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10017
014 A00AA01 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
014 B00AA01 8-00017574
015 A00AA01 STATE STREET BANK AND TRUST CO.
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02105
015 E01AA01 X
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   51
019 C00AA00 ALLIANCECA
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020 C000005      0
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021  000000        1
022 A000001 WEST DEUTSCHE LANDESBANK
022 C000001   5017790
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022 A000002 GOLDMAN, SACHS & CO.
022 B000002 13-5108880
022 C000002   4311819
022 D000002    266114
022 A000003 STATE STREET BANK AND TRUST CO.
022 B000003 04-1867445
022 C000003   4067299
022 D000003      5900
022 A000004 BANK OF MONTREAL, NEW YORK
022 C000004   3854700
022 D000004         0
022 A000005 MORGAN STANLEY & CO., INC.
022 B000005 13-2655998
022 C000005   3584245
<PAGE>      PAGE  3
022 D000005     98441
022 A000006 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
022 B000006 13-5674085
022 C000006   3553601
022 D000006     80332
022 A000007 SOCIETE GENERALE SECURITIES CORP.
022 B000007 13-1976032
022 C000007   2986312
022 D000007         0
022 A000008 LEHMAN BROTHERS, INC.
022 B000008 13-2518466
022 C000008   2819615
022 D000008     94954
022 A000009 BANK ONE CAPITAL MARKETS
022 C000009   2823001
022 D000009     39961
022 A000010 CREDIT SUISSE FIRST BOSTON CORP.
022 B000010 13-5659485
022 C000010   2509138
022 D000010    134835
023 C000000   63417168
023 D000000    1718286
026 A000000 N
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026 F000000 N
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<PAGE>      PAGE  4
052  00AA00 N
053 A00AA00 Y
053 B00AA00 Y
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054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
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054 E00AA00 N
054 F00AA00 N
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054 H00AA00 Y
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055 B00AA00 N
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058 C00AA00 N
058 D00AA00 N
058 E00AA00 N
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<PAGE>      PAGE  5
077 O000000 N
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080 A00AA00 ICI MUTUAL INSURANCE CO
080 B00AA00 GULF INSURANCE CO, CHUBB
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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070 E020100 N
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070 F020100 N
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<PAGE>      PAGE  8
070 K010100 N
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<PAGE>      PAGE  9
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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070 D020200 N
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070 E020200 N
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070 H020200 N
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<PAGE>      PAGE  12
070 J010200 Y
070 J020200 N
070 K010200 N
070 K020200 N
070 L010200 N
070 L020200 N
070 M010200 N
070 M020200 N
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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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048 B010400        0
048 B020400 0.000
<PAGE>      PAGE  19
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
062 A000400 Y
062 B000400   0.0
062 C000400   9.6
062 D000400   0.0
062 E000400   0.0
062 F000400  23.9
062 G000400   0.0
062 H000400   0.0
062 I000400  37.3
062 J000400   0.8
062 K000400   0.0
062 L000400  27.8
062 M000400   0.0
062 N000400   0.0
062 O000400   0.0
062 P000400   0.0
062 Q000400   0.0
062 R000400   0.0
063 A000400  55
063 B000400  0.0
064 A000400 N
064 B000400 N
070 A010400 Y
070 A020400 N
070 B010400 N
070 B020400 N
070 C010400 N
070 C020400 N
070 D010400 N
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
<PAGE>      PAGE  20
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 Y
070 K010400 N
070 K020400 N
070 L010400 N
070 L020400 N
070 M010400 N
070 M020400 N
070 N010400 N
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         0
071 B000400         0
071 C000400         0
071 D000400    0
072 A000400  6
072 B000400    19030
072 C000400        0
072 D000400        0
072 E000400        0
072 F000400     1625
072 G000400        0
072 H000400        0
072 I000400       14
072 J000400       82
072 K000400        0
072 L000400        6
072 M000400        2
072 N000400      143
072 O000400        0
072 P000400        0
072 Q000400        0
072 R000400        6
072 S000400        8
072 T000400        0
072 U000400        0
072 V000400        0
<PAGE>      PAGE  21
072 W000400        6
072 X000400     1892
072 Y000400       86
072 Z000400    17224
072AA000400        0
072BB000400        1
072CC010400        0
072CC020400        0
072DD010400    17224
072DD020400        0
072EE000400        0
073 A010400   0.0240
073 A020400   0.0000
073 B000400   0.0000
073 C000400   0.0000
074 A000400      231
074 B000400        0
074 C000400   653354
074 D000400        0
074 E000400        0
074 F000400        0
074 G000400        0
074 H000400        0
074 I000400        0
074 J000400        0
074 K000400       13
074 L000400     4347
074 M000400        0
074 N000400   657945
074 O000400        0
074 P000400      252
074 Q000400        0
074 R010400        0
074 R020400        0
074 R030400        0
074 R040400      296
074 S000400        0
074 T000400   657397
074 U010400   657437
074 U020400        0
074 V010400     1.00
074 V020400     0.00
074 W000400   0.9992
074 X000400      841
074 Y000400        0
075 A000400   718515
075 B000400        0
076  000400     0.00
024  000500 N
025 D000501       0
025 D000502       0
<PAGE>      PAGE  22
025 D000503       0
025 D000504       0
025 D000505       0
025 D000506       0
025 D000507       0
025 D000508       0
028 A010500     10277
028 A020500       132
028 A030500         0
028 A040500     32534
028 B010500      3200
028 B020500        82
028 B030500         0
028 B040500     12418
028 C010500      3198
028 C020500        78
028 C030500         0
028 C040500      5008
028 D010500     84996
028 D020500       358
028 D030500         0
028 D040500      2859
028 E010500    103942
028 E020500       584
028 E030500         0
028 E040500     21534
028 F010500    208314
028 F020500      1207
028 F030500         0
028 F040500     70098
028 G010500    413927
028 G020500      2441
028 G030500         0
028 G040500    144451
028 H000500         0
042 A000500   0
042 B000500   0
042 C000500   0
042 D000500   0
042 E000500   0
042 F000500   0
042 G000500   0
042 H000500   0
043  000500     87
044  000500      0
045  000500 Y
046  000500 N
047  000500 Y
048  000500  0.200
048 A010500        0
048 A020500 0.000
<PAGE>      PAGE  23
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
062 A000500 Y
062 B000500  26.4
062 C000500   0.0
062 D000500  73.3
062 E000500   0.0
062 F000500   0.0
062 G000500   0.0
062 H000500   0.0
062 I000500   0.0
062 J000500   0.0
062 K000500   0.0
062 L000500   0.0
062 M000500   0.0
062 N000500   0.0
062 O000500   0.0
062 P000500   0.0
062 Q000500   0.0
062 R000500   0.0
063 A000500  33
063 B000500  0.0
070 A010500 Y
070 A020500 Y
070 B010500 N
070 B020500 N
070 C010500 N
070 C020500 N
070 D010500 N
070 D020500 N
070 E010500 N
070 E020500 N
070 F010500 N
<PAGE>      PAGE  24
070 F020500 N
070 G010500 N
070 G020500 N
070 H010500 N
070 H020500 N
070 I010500 N
070 I020500 N
070 J010500 Y
070 J020500 N
070 K010500 N
070 K020500 N
070 L010500 N
070 L020500 N
070 M010500 N
070 M020500 N
070 N010500 N
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         0
071 B000500         0
071 C000500         0
071 D000500    0
072 A000500  6
072 B000500     2633
072 C000500        0
072 D000500        0
072 E000500        0
072 F000500      105
072 G000500        0
072 H000500        0
072 I000500        8
072 J000500       52
072 K000500        0
072 L000500        4
072 M000500        3
072 N000500       49
072 O000500        0
072 P000500        0
072 Q000500        0
072 R000500        4
072 S000500        1
072 T000500       87
072 U000500        0
072 V000500        0
<PAGE>      PAGE  25
072 W000500        1
072 X000500      314
072 Y000500      122
072 Z000500     2441
072AA000500        0
072BB000500        2
072CC010500        0
072CC020500        0
072DD010500       89
072DD020500     2352
072EE000500        0
073 A010500   0.0236
073 A020500   0.0231
073 B000500   0.0000
073 C000500   0.0000
074 A000500      504
074 B000500   237600
074 C000500    85448
074 D000500        0
074 E000500        0
074 F000500        0
074 G000500        0
074 H000500        0
074 I000500        0
074 J000500        0
074 K000500       18
074 L000500      547
074 M000500        0
074 N000500   324117
074 O000500        0
074 P000500      115
074 Q000500        0
074 R010500        0
074 R020500        0
074 R030500        0
074 R040500       54
074 S000500        0
074 T000500   323948
074 U010500     4068
074 U020500   319884
074 V010500     1.00
074 V020500     1.00
074 W000500   1.0000
074 X000500      881
074 Y000500        0
075 A000500   104265
075 B000500        0
076  000500     0.00
SIGNATURE   JOSEPH REZABEK
TITLE       ASST. VICE-PRESIDENT


WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 011
   <NAME> PRIME PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                    3,158,227,364
<INVESTMENTS-AT-VALUE>                   3,158,227,364
<RECEIVABLES>                               22,806,699
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                           3,181,034,063
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    5,039,125
<TOTAL-LIABILITIES>                          5,039,125
<SENIOR-EQUITY>                             31,761,342
<PAID-IN-CAPITAL-COMMON>                 3,144,372,840
<SHARES-COMMON-STOCK>                    1,883,000,316
<SHARES-COMMON-PRIOR>                    1,671,016,155
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (139,244)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                             3,175,994,938
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           73,932,629
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (3,294,770)
<NET-INVESTMENT-INCOME>                     70,637,859
<REALIZED-GAINS-CURRENT>                       (2,435)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       70,635,424
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                 (48,055,471)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                  8,807,177,022
<NUMBER-OF-SHARES-REDEEMED>            (8,643,248,332)
<SHARES-REINVESTED>                         48,055,471
<NET-CHANGE-IN-ASSETS>                     930,730,270
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (136,809)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        2,809,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              3,723,000
<AVERAGE-NET-ASSETS>                     1,893,049,933
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.03
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.03)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .20
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 012
   <NAME> PRIME PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                    3,158,227,364
<INVESTMENTS-AT-VALUE>                   3,158,227,364
<RECEIVABLES>                               22,806,699
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                           3,181,034,063
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    5,039,125
<TOTAL-LIABILITIES>                          5,039,125
<SENIOR-EQUITY>                             31,761,342
<PAID-IN-CAPITAL-COMMON>                 3,144,372,840
<SHARES-COMMON-STOCK>                    1,236,031,789
<SHARES-COMMON-PRIOR>                      536,066,979
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (139,244)
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                             3,175,994,938
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           73,932,629
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (3,294,770)
<NET-INVESTMENT-INCOME>                     70,637,859
<REALIZED-GAINS-CURRENT>                       (2,435)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       70,635,424
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                 (21,523,539)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                  3,857,989,862
<NUMBER-OF-SHARES-REDEEMED>            (3,179,548,591)
<SHARES-REINVESTED>                         21,523,539
<NET-CHANGE-IN-ASSETS>                     930,730,270
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (136,809)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        2,809,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              3,723,000
<AVERAGE-NET-ASSETS>                       857,119,323
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .30
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 013
   <NAME> PRIME PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
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<INVESTMENTS-AT-VALUE>                   3,158,227,364
<RECEIVABLES>                               22,806,699
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                           3,181,034,063
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    5,039,125
<TOTAL-LIABILITIES>                          5,039,125
<SENIOR-EQUITY>                             31,761,342
<PAID-IN-CAPITAL-COMMON>                 3,144,372,840
<SHARES-COMMON-STOCK>                       57,102,077
<SHARES-COMMON-PRIOR>                       38,318,343
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (139,244)
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<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (3,294,770)
<NET-INVESTMENT-INCOME>                     70,637,859
<REALIZED-GAINS-CURRENT>                       (2,435)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       70,635,424
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (1,058,849)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     74,636,010
<NUMBER-OF-SHARES-REDEEMED>               (56,911,125)
<SHARES-REINVESTED>                          1,058,849
<NET-CHANGE-IN-ASSETS>                     930,730,270
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (136,809)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        2,809,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              3,723,000
<AVERAGE-NET-ASSETS>                        43,611,915
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .45
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 021
   <NAME> GOVERNMENT PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
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<INVESTMENTS-AT-VALUE>                     635,607,836
<RECEIVABLES>                                5,497,757
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             641,105,593
<PAYABLE-FOR-SECURITIES>                     2,999,790
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,962,558
<TOTAL-LIABILITIES>                          4,962,348
<SENIOR-EQUITY>                              6,362,744
<PAID-IN-CAPITAL-COMMON>                   629,911,646
<SHARES-COMMON-STOCK>                      461,010,848
<SHARES-COMMON-PRIOR>                      394,500,284
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (131,145)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               636,143,245
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           15,584,339
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (722,345)
<NET-INVESTMENT-INCOME>                     14,861,994
<REALIZED-GAINS-CURRENT>                         (985)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       14,861,009
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (9,467,627)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                  1,468,458,209
<NUMBER-OF-SHARES-REDEEMED>            (1,411,415,272)
<SHARES-REINVESTED>                          9,467,627
<NET-CHANGE-IN-ASSETS>                     102,448,280
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (130,161)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          605,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                916,000
<AVERAGE-NET-ASSETS>                       380,381,166
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.03
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.03)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .20
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 022
   <NAME> GOVERNMENT PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      635,607,836
<INVESTMENTS-AT-VALUE>                     635,607,836
<RECEIVABLES>                                5,497,757
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             641,105,593
<PAYABLE-FOR-SECURITIES>                     2,999,790
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,962,558
<TOTAL-LIABILITIES>                          4,962,348
<SENIOR-EQUITY>                              6,362,744
<PAID-IN-CAPITAL-COMMON>                   629,911,646
<SHARES-COMMON-STOCK>                      158,323,334
<SHARES-COMMON-PRIOR>                      136,101,347
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (131,145)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               636,143,245
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           15,584,339
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (722,345)
<NET-INVESTMENT-INCOME>                     14,861,994
<REALIZED-GAINS-CURRENT>                         (985)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       14,861,009
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (5,178,062)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    586,788,909
<NUMBER-OF-SHARES-REDEEMED>              (569,744,984)
<SHARES-REINVESTED>                          5,178,062
<NET-CHANGE-IN-ASSETS>                     102,448,280
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (130,161)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          605,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                916,000
<AVERAGE-NET-ASSETS>                       211,788,658
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .30
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 023
   <NAME> GOVERNMENT PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      635,607,836
<INVESTMENTS-AT-VALUE>                     635,607,836
<RECEIVABLES>                                5,497,757
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             641,105,593
<PAYABLE-FOR-SECURITIES>                     2,999,790
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,962,558
<TOTAL-LIABILITIES>                          4,962,348
<SENIOR-EQUITY>                              6,362,744
<PAID-IN-CAPITAL-COMMON>                   629,911,646
<SHARES-COMMON-STOCK>                       16,940,208
<SHARES-COMMON-PRIOR>                        3,223,494
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (131,145)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               636,143,245
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           15,584,339
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (722,345)
<NET-INVESTMENT-INCOME>                     14,861,994
<REALIZED-GAINS-CURRENT>                         (985)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       14,861,009
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (216,305)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     35,203,800
<NUMBER-OF-SHARES-REDEEMED>               (21,703,391)
<SHARES-REINVESTED>                            216,305
<NET-CHANGE-IN-ASSETS>                     102,448,280
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (130,161)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          605,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                916,000
<AVERAGE-NET-ASSETS>                         9,046,591
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .45
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 031
   <NAME> TAX-FREE PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      495,849,879
<INVESTMENTS-AT-VALUE>                     495,849,879
<RECEIVABLES>                                2,404,404
<ASSETS-OTHER>                                 155,579
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             498,409,862
<PAYABLE-FOR-SECURITIES>                    17,180,937
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      339,770
<TOTAL-LIABILITIES>                         17,520,707
<SENIOR-EQUITY>                              4,809,727
<PAID-IN-CAPITAL-COMMON>                   476,162,922
<SHARES-COMMON-STOCK>                      236,966,016
<SHARES-COMMON-PRIOR>                      256,096,862
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (83,494)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               480,889,155
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            8,740,826
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (656,789)
<NET-INVESTMENT-INCOME>                      8,084,037
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        8,084,037
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (4,132,405)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    694,362,588
<NUMBER-OF-SHARES-REDEEMED>              (717,625,839)
<SHARES-REINVESTED>                          4,132,405
<NET-CHANGE-IN-ASSETS>                      29,919,423
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                     (83,495)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          513,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                888,000
<AVERAGE-NET-ASSETS>                       255,896,646
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .20
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 032
   <NAME> TAX-FREE PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      495,849,879
<INVESTMENTS-AT-VALUE>                     495,849,879
<RECEIVABLES>                                2,404,404
<ASSETS-OTHER>                                 155,579
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             498,409,862
<PAYABLE-FOR-SECURITIES>                    17,180,937
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      339,770
<TOTAL-LIABILITIES>                         17,520,707
<SENIOR-EQUITY>                              4,809,727
<PAID-IN-CAPITAL-COMMON>                   476,162,922
<SHARES-COMMON-STOCK>                      225,751,587
<SHARES-COMMON-PRIOR>                      192,730,218
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (83,494)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               480,889,155
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            8,740,826
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (656,789)
<NET-INVESTMENT-INCOME>                      8,084,037
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        8,084,037
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (3,635,257)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    367,980,278
<NUMBER-OF-SHARES-REDEEMED>              (338,594,166)
<SHARES-REINVESTED>                          3,635,257
<NET-CHANGE-IN-ASSETS>                      29,919,423
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                     (83,495)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          513,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                888,000
<AVERAGE-NET-ASSETS>                       232,856,314
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .30
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 033
   <NAME> TAX-FREE PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      495,849,879
<INVESTMENTS-AT-VALUE>                     495,849,879
<RECEIVABLES>                                2,404,404
<ASSETS-OTHER>                                 155,579
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             498,409,862
<PAYABLE-FOR-SECURITIES>                    17,180,937
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      339,770
<TOTAL-LIABILITIES>                         17,520,707
<SENIOR-EQUITY>                              4,809,727
<PAID-IN-CAPITAL-COMMON>                   476,162,922
<SHARES-COMMON-STOCK>                       18,255,059
<SHARES-COMMON-PRIOR>                        2,226,147
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (83,494)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               480,889,155
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            8,740,826
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (656,789)
<NET-INVESTMENT-INCOME>                      8,084,037
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        8,084,037
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (316,375)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    122,829,375
<NUMBER-OF-SHARES-REDEEMED>              (107,116,850)
<SHARES-REINVESTED>                            316,375
<NET-CHANGE-IN-ASSETS>                      29,919,423
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                     (83,495)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          513,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                888,000
<AVERAGE-NET-ASSETS>                        21,366,525
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.01
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.01)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .45
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 041
   <NAME> TRUST PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      653,354,255
<INVESTMENTS-AT-VALUE>                     653,354,255
<RECEIVABLES>                                4,359,602
<ASSETS-OTHER>                                 231,104
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             657,944,961
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      548,183
<TOTAL-LIABILITIES>                            548,183
<SENIOR-EQUITY>                              6,574,374
<PAID-IN-CAPITAL-COMMON>                   650,863,029
<SHARES-COMMON-STOCK>                      657,437,403
<SHARES-COMMON-PRIOR>                      795,069,334
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (40,625)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               657,396,778
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           19,030,421
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (1,806,104)
<NET-INVESTMENT-INCOME>                     17,224,317
<REALIZED-GAINS-CURRENT>                         (861)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                       17,223,456
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                 (17,224,317)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                  1,329,631,799
<NUMBER-OF-SHARES-REDEEMED>            (1,484,488,047)
<SHARES-REINVESTED>                         17,224,317
<NET-CHANGE-IN-ASSETS>                   (137,632,792)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                     (39,764)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        1,625,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              1,892,000
<AVERAGE-NET-ASSETS>                       718,515,233
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .50
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 051
   <NAME> TREASURY PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      323,047,510
<INVESTMENTS-AT-VALUE>                     323,047,510
<RECEIVABLES>                                  564,828
<ASSETS-OTHER>                                 504,263
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             324,116,601
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      168,458
<TOTAL-LIABILITIES>                            168,458
<SENIOR-EQUITY>                              3,239,518
<PAID-IN-CAPITAL-COMMON>                   320,712,322
<SHARES-COMMON-STOCK>                        4,068,063
<SHARES-COMMON-PRIOR>                        4,067,485
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (3,697)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               323,948,143
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            2,632,712
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (191,511)
<NET-INVESTMENT-INCOME>                      2,441,201
<REALIZED-GAINS-CURRENT>                       (1,508)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        2,439,693
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (88,913)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      4,798,988
<NUMBER-OF-SHARES-REDEEMED>                (4,887,323)
<SHARES-REINVESTED>                             88,913
<NET-CHANGE-IN-ASSETS>                     271,915,806
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      (2,343)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          105,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                313,000
<AVERAGE-NET-ASSETS>                         3,759,368
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .20
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 052
   <NAME> TREASURY PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      323,047,510
<INVESTMENTS-AT-VALUE>                     323,047,510
<RECEIVABLES>                                  564,828
<ASSETS-OTHER>                                 504,263
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             324,116,601
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      168,458
<TOTAL-LIABILITIES>                            168,458
<SENIOR-EQUITY>                              3,239,518
<PAID-IN-CAPITAL-COMMON>                   320,712,322
<SHARES-COMMON-STOCK>                       95,189,238
<SHARES-COMMON-PRIOR>                       14,885,766
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (3,697)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               323,948,143
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            2,632,712
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (191,511)
<NET-INVESTMENT-INCOME>                      2,441,201
<REALIZED-GAINS-CURRENT>                       (1,508)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        2,439,693
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (1,243,186)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     92,135,534
<NUMBER-OF-SHARES-REDEEMED>               (13,075,094)
<SHARES-REINVESTED>                          1,243,186
<NET-CHANGE-IN-ASSETS>                     271,915,806
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      (2,343)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          105,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                313,000
<AVERAGE-NET-ASSETS>                        52,578,264
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .30
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000862021
<NAME> ACM INSTITUTIONAL RESERVES
<SERIES>
   <NUMBER> 053
   <NAME> TREASURY PORTFOLIO

<S>                             <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-31-1999
<INVESTMENTS-AT-COST>                      323,047,510
<INVESTMENTS-AT-VALUE>                     323,047,510
<RECEIVABLES>                                  564,828
<ASSETS-OTHER>                                 504,263
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             324,116,601
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      168,458
<TOTAL-LIABILITIES>                            168,458
<SENIOR-EQUITY>                              3,239,518
<PAID-IN-CAPITAL-COMMON>                   320,712,322
<SHARES-COMMON-STOCK>                      224,694,539
<SHARES-COMMON-PRIOR>                       33,081,429
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (3,697)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                               323,948,143
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            2,632,712
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (191,511)
<NET-INVESTMENT-INCOME>                      2,441,201
<REALIZED-GAINS-CURRENT>                       (1,508)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        2,439,693
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (1,109,102)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    316,992,769
<NUMBER-OF-SHARES-REDEEMED>              (126,488,761)
<SHARES-REINVESTED>                          1,109,102
<NET-CHANGE-IN-ASSETS>                     271,915,806
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      (2,343)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          105,000
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                313,000
<AVERAGE-NET-ASSETS>                        47,927,333
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .45
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>

Selection of Independent Auditors
[ABS, AIR, AMA, AMIF II, ACM IV, ACM V, AFDER, AGSCF,
AGDGF, AHYF, AQF, AREIF, TAP-STUSG, & ACM VIII]
The Chairman stated that the next order of business was the
selection of independent auditors to audit the accounts of AIR for the
fiscal year ending April 30, 2000, AGSCF, ABS and ACM IV for the fiscal
year ending July 31, 2000, AREIF, AGDGF, ACM V, AHYF and TAP-STUSG for
the fiscal year ending August 31, 2000, and ACM VIII, AFDER, AQF, AMA,
AMIF II for the fiscal year ending September 30, 2000. He indicated
that it was proposed that Ernst & Young LLP, current independent
auditors for AGSCF, ACM IV, AREIF, AGDGF, ACM V, AGSCF, AHYF, AQF, FMA,
AMIF II and ACM VIII, PricewaterhouseCoopers LLP, current independent
auditors for AFDER, TAP-STUSG and AMA, be selected for the coming
fiscal year. General discussion followed during which certain Directors
commented favorably upon the services to the Funds by Ernst & Young LLP
and PricewaterhouseCoopers LLP during the past year.
Thereafter, on motion duly made and seconded, the following
resolutions were unanimously adopted:


(ABS, ACM IV,
 ACM V, ACM
 VIII, AFDER,
 AGDGF, AGSCF,
 AHYF, AIR,
 AMA, AMIF II,
 AQF, AREIF &
 TAP-STUSG)
RESOLVED, that (a)                   , independent
public accountants, are hereby selected to audit the
accounts of the Fund for the fiscal year ending (b)
, 2000.




           a)

   b)
ABS
PricewaterhouseCoopers LLP
July 31
ACM IV
Ernst & Young LLP
July 31
ACM V
Ernst & Young LLP
August 31
ACM VIII
Ernst & Young LLP
September 30
AFDER
PricewaterhouseCoopers LLP
September 30
AGDGF
Ernst & Young LLP
August 31
AGSCF
Ernst & Young LLP
July 31
AHYF
Ernst & Young LLP
August 31
AIR
PricewaterhouseCoopers LLP
April 30
AMA
PricewaterhouseCoopers LLP
September 30
AMIF II
Ernst & Young LLP
September 30
AQF
Ernst & Young LLP
September 30
AREIF
Ernst & Young LLP
August 31
TAP-STUSG
PricewaterhouseCoopers LLP
August 31







Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street
Washington D.C. 20549

We were previously the independent accountants for Alliance
Institutional Reserves, Inc..   We have read their notification of
change in independent accountants made in Item 77K of Form N-SAR.  We
agree with the statements in the filing.




						McGladrey & Pullen, LLP


New York, New York
December 28, 1999


								77N
August 11, 1999


U.S. Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

Attention: Mr. Paul F. Roye
 Director, Division of Investment Management

Obligations of General American
     Life Insurance Company

Ladies and Gentlemen:

	With reference to Rule 2a-7(c)(6)(iii) under the Investment Company Act
of 1940, as amended (the "1940 Act"), this letter is to confirm the
information provided to the staff of the Division of Investment Management by
telephone last night concerning debt obligations (the "Obligations") issued
by General American Life Insurance Company ("General American") which are
held in the investment portfolios of "money market funds" of which Alliance
Capital Management L.P. ("Alliance") is the investment adviser (each a
"Fund").  The name of each Fund, the approximate principal amount of the
Obligations held by the Fund and the approximate percentage of each Fund's net
assets represented by the Obligations are as follows:
	  Approximate Principal 	   Approximate Percentage
Amount of Obligations Held	   of Fund's Net Assets
    Name of Fund 		         (in Millions)       	Represented by the
Obligations

Alliance Capital Reserves		$405				3.7%

Alliance Capital Money			  60				3.9%
   Reserves

Alliance Institutional			  85				3.3%
Reserves, Inc.  Prime Portfolio

Alliance Institutional			  20				2.7%
Reserves, Inc.  Trust Portfolio

	As we informed the staff, each Fund has an unconditional right upon
demand to receive payment of the outstanding principal of the Obligations it
holds plus accrued interest thereon, which demand may be made at any time upon
not more than seven days' notice.  Each Fund submitted a proper demand on
August 2, 1999 for the entire amount of the principal and accrued interest on
the Obligations it held.  Payment of the amount demanded should have been
received on August 9, 1999.  No portion of that amount was paid to any Fund on
that date nor has any portion thereof since been received by any Fund.

	A meeting of the Board of Directors or Trustees of each Fund was held
yesterday.  At the meeting, the Directors or Trustees of each Fund approved a
methodology for valuation of the Obligations under current conditions on a
fair value basis, which resulted in a valuation of at the close of business
yesterday of 98 cents on the dollar.  The Directors or Trustees of each Fund
also determined, with reference to Rule 2a-7(c)(6)(iii) of the 1940 Act, that
disposal of the Obligations held by the Fund would not be in the Fund's best
interests.

As we also discussed with the staff, developments pertinent to the
Obligations are being monitored closely for each of the Funds by Alliance, and
contingency planning is well underway.  The Obligations are currently being
treated as illiquid.

Please contact me (at (212) 969-2108) or Emilie Wrapp of Alliance (at
(212) 969-2154) should you require additional information concerning this
matter.

								Very truly yours,







S:\MF_Legal\Epb\Roye-SEC 8-11-99.ltr
2




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