AIM INVESTMENT SECURITIES FUNDS INC
NSAR-B, 1998-09-25
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<PAGE>      PAGE  1
000 B000000 07/31/98
000 C000000 0000842790
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 U
001 A000000 AIM INVESTMENT SECURITIES FUNDS
001 B000000 811-5686
001 C000000 7136261919
002 A000000 11 GREENWAY PLAZA, SUITE 100
002 B000000 HOUSTON
002 C000000 TX
002 D010000 77046
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
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007 C010100  1
007 C020100 LIMITED MATURITY TREASURY FUND
007 C030100 N
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007 C010300  3
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007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A00AA01 AIM ADVISORS, INC.
008 B00AA01 A
008 C00AA01 801-12313
008 D01AA01 HOUSTON
008 D02AA01 TX
008 D03AA01 77046
011 A00AA01 FUND MANAGEMENT COMPANY (FMC)
011 B00AA01 8-41848
011 C01AA01 HOUSTON
011 C02AA01 TX
011 C03AA01 77046
011 A00AA02 AIM DISTRIBUTORS, INC.
011 B00AA02 8-21323
011 C01AA02 HOUSTON
011 C02AA02 TX
011 C03AA02 77046
012 A00AA01 AIM FUND SERVICES, INC.
<PAGE>      PAGE  2
012 B00AA01 84-5432
012 C01AA01 HOUSTON
012 C02AA01 TX
012 C03AA01 77210
012 C04AA01 4739
013 A00AA01 KPMG PEAT MARWICK LLP
013 B01AA01 HOUSTON
013 B02AA01 TX
013 B03AA01 77002
015 A00AA01 BANK OF NEW YORK
015 B00AA01 C
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015 C02AA01 NY
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022 C000001    172633
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022 A000002 SALOMON SMITH BARNEY, INC.
022 B000002 13-1912900
022 C000002    102377
022 D000002     89771
022 A000003 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
022 B000003 13-2741729
022 C000003     81792
022 D000003     85493
022 A000004 GOLDMAN, SACHS & CO.
022 B000004 13-5108880
022 C000004     72200
022 D000004     51006
022 A000005 BNY CAPITAL MARKETS, INC.
022 B000005 13-3878175
022 C000005     67690
022 D000005     51524
022 A000006 GREENWICH HIGH YIELD, LLC
022 B000006 06-1415808
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022 A000007 DEUTSCHE MORGAN GRENFELL INC.
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022 C000007      1997
022 D000007     52072
022 A000008 FUJI SECURITIES INC.
022 B000008 36-2880742
022 C000008      4022
<PAGE>      PAGE  3
022 D000008     48907
022 A000009 MORGAN STANLEY & CO., INC.
022 B000009 13-2655998
022 C000009      9490
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022 A000010 SANWA SECURITIES (USA) CO., L.P.
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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SIGNATURE   JOHN J. ARTHUR                               
TITLE       SR. VP TREASURER    
 

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

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Limited
Maturity Treasury Fund Retail Shares July 31, 1998 annual report.
</LEGEND>
<CIK> 0000842790
<NAME> AIM INVESTMENTS SECURITIES FUNDS, INC.
<SERIES>
   <NUMBER> 1
   <NAME> LIMITED MATURITY TREASURY FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUL-31-1998
<PERIOD-END>                               JUL-31-1998
<INVESTMENTS-AT-COST>                        391293845
<INVESTMENTS-AT-VALUE>                       391994363
<RECEIVABLES>                                  5868066
<ASSETS-OTHER>                                   98126
<OTHER-ITEMS-ASSETS>                             58653
<TOTAL-ASSETS>                               398019208
<PAYABLE-FOR-SECURITIES>                             0
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<ACCUMULATED-NET-GAINS>                      (5476817)
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<NET-ASSETS>                                 395964547
<DIVIDEND-INCOME>                                    0
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<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 2191000
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<DISTRIBUTIONS-OF-INCOME>                   (22758619)
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<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Limited
Maturity Treasury Fund Institutional Shares July 31, 1998 annual report.
</LEGEND>
<CIK> 0000842790
<NAME> AIM INVESTMENTS SECURITIES FUNDS, INC.
<SERIES>
   <NUMBER> 1
   <NAME> LIMITED MATURITY TREASURY FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUL-31-1998
<PERIOD-END>                               JUL-31-1998
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<INVESTMENTS-AT-VALUE>                       391994363
<RECEIVABLES>                                  5868066
<ASSETS-OTHER>                                   98126
<OTHER-ITEMS-ASSETS>                             58653
<TOTAL-ASSETS>                               398019208
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      2054661
<TOTAL-LIABILITIES>                            2054661
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     400652004
<SHARES-COMMON-STOCK>                         39326428
<SHARES-COMMON-PRIOR>                         43572323
<ACCUMULATED-NII-CURRENT>                        88842
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<ACCUMULATED-NET-GAINS>                      (5476817)
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                                 395964547
<DIVIDEND-INCOME>                                    0
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<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 2191000
<NET-INVESTMENT-INCOME>                       22758619
<REALIZED-GAINS-CURRENT>                       1855056
<APPREC-INCREASE-CURRENT>                    (1793413)
<NET-CHANGE-FROM-OPS>                         22820262
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   (22758619)
<DISTRIBUTIONS-OF-GAINS>                             0
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<PER-SHARE-NII>                                   0.56
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<EXPENSE-RATIO>                                   0.32
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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