SIT MUTUAL FUNDS INC
NSAR-A, 1999-02-26
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<PAGE>      PAGE  1
000 A000000 12/31/98
000 C000000 0000877880
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 SIT MUTUAL FUNDS INC.
001 B000000 811-06373
001 C000000 6123323223
002 A000000 4600 NORWEST CENTER, 90 SOUTH 7TH STREET
002 B000000 MINNEAPOLIS
002 C000000 MN
002 D010000 55402
002 D020000 4130
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  6
007 C010100  1
007 C020100 SERIES A, SIT INTERNATIONAL GROWTH FUND
007 C030100 N
007 C010200  2
007 C020200 SERIES B, SIT BALANCED FUND
007 C030200 N
007 C010300  3
007 C020300 SERIES C, SIT DEVELOPING MARKETS GROWTH FUND
007 C030300 N
007 C010400  4
007 C020400 SERIES D, SIT SMALL CAPITAL GROWTH FUND
007 C030400 N
007 C010500  5
007 C020500 SERIES E, SIT SCIENCE AND TECHNOLOGY GROWTH F
007 C030500 N
007 C010600  6
007 C020600 SERIES F, SIT REGIONAL GROWTH FUND
007 C030600 N
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
011 A00AA01 SIA SECURITIES CORP.
011 B00AA01 8-46668
011 C01AA01 MINNEAPOLIS
011 C02AA01 MN
011 C03AA01 55402
011 C04AA01 4130
<PAGE>      PAGE  2
012 A00AA01 FIRST DATA INVESTOR SERVICES GROUP
012 B00AA01 84-1760
012 C01AA01 WESTBORO
012 C02AA01 MA
012 C03AA01 01581
012 C04AA01 9535
013 A00AA01 KPMG PEAT MARWICK LLP
013 B01AA01 MINNEAPOLIS
013 B02AA01 MN
013 B03AA01 55402
013 B04AA01 3900
014 A00AA01 SIA SECURITIES CORP.
014 B00AA01 8-46668
015 A00AA01 THE NORTHERN TRUST COMPANY
015 B00AA01 C
015 C01AA01 CHICAGO
015 C02AA01 IL
015 C03AA01 60675
015 C04AA01 0000
015 E01AA01 X
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   13
019 C00AA00 SIT NBGING
020 A000001 MERRILL LYNCH SECURITIES
020 B000001 13-5674085
020 C000001     41
020 A000002 MORGAN STANLEY
020 B000002 13-2655998
020 C000002     19
020 A000003 GOLDMAN SACHS
020 B000003 95-6287525
020 C000003     19
020 A000004 INSTINET
020 B000004 13-2596491
020 C000004     18
020 A000005 LATINVEST
020 B000005 75-2329230
020 C000005     12
020 A000006 ABN-AMRO
020 B000006 13-3227945
020 C000006     10
020 A000007 BARING SECURITIES
020 B000007 04-2455153
020 C000007      9
020 A000008 TIR SECURITIES
020 B000008 13-3506065
020 C000008      9
020 A000009 CREDIT LYONNAIS SECURITIES
020 B000009 13-2602298
020 C000009      8
<PAGE>      PAGE  3
020 A000010 S.G. WARBURG
020 B000010 13-2671492
020 C000010      6
021  000000      236
022 A000001 AMERICAN EXPRESS CREDIT CORP.
022 B000001 11-1988350
022 C000001     92535
022 D000001         0
022 A000002 CIT GROUP HOLDINGS
022 B000002 13-2994534
022 C000002     79398
022 D000002         0
022 A000003 HOUSEHOLD FINANCE CORP.
022 B000003 36-1239445
022 C000003     48624
022 D000003         0
022 A000004 SEARS ROEBUCK ACCEPTANCE CORP.
022 B000004 51-0080535
022 C000004     45589
022 D000004         0
022 A000005 FORD MOTOR CREDIT CORP.
022 B000005 38-1612444
022 C000005     43147
022 D000005         0
022 A000006 TEXACO, INC.
022 B000006 74-1383447
022 C000006     38306
022 D000006         0
022 A000007 GENERAL ELECTRIC CREDIT CORP.
022 B000007 13-1500700
022 C000007     33033
022 D000007       334
022 A000008 FIRST CHICAGO CAPITAL MARKETS
022 B000008 36-3595942
022 C000008     35080
022 D000008         0
022 A000009 GENERAL MOTORS ACCEPTANCE CORP.
022 B000009 38-0572512
022 C000009     16658
022 D000009         0
022 A000010 GOLDMAN SACHS
022 B000010 95-6287525
022 C000010      2804
022 D000010      2983
023 C000000     464921
023 D000000      22085
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026 C000000 N
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<PAGE>      PAGE  4
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054 M00AA00 Y
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<PAGE>      PAGE  5
060 A00AA00 Y
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008 A000101 SIT INVESTMENT ASSOCIATES, INC.
008 B000101 A
<PAGE>      PAGE  6
008 C000101 801-16350
008 D010101 MINNEAPOLIS
008 D020101 MN
008 D030101 55402
008 D040101 4130
008 A000102 SIT/KIM INTERNATIONAL INVESTMENT ASSOC., INC.
008 B000102 S
008 C000102 801-34582
008 D010102 MINNEAPOLIS
008 D020102 MN
008 D030102 55402
008 D040102 4130
024  000100 N
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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  10
008 A000201 SIT INVESTMENT ASSOCIATES, INC.
008 B000201 A
008 C000201 801-16350
008 D010201 MINNEAPOLIS
008 D020201 MN
008 D030201 55402
008 D040201 4130
024  000200 N
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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008 A000301 SIT INVESTMENT ASSOCIATES, INC.
008 B000301 A
008 C000301 801-16350
008 D010301 MINNEAPOLIS
008 D020301 MN
008 D030301 55402
008 D040301 4130
008 A000302 SIT/KIM INTERNATIONAL INVESTMENT ASSOC., INC.
008 B000302 S
008 C000302 801-34582
008 D010302 MINNEAPOLIS
008 D020302 MN
008 D030302 55402
<PAGE>      PAGE  14
008 D040302 4130
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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008 A000401 SIT INVESTMENT ASSOCIATES, INC.
008 B000401 A
008 C000401 801-16350
008 D010401 MINNEAPOLIS
008 D020401 MN
008 D030401 55402
008 D040401 4130
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<PAGE>      PAGE  18
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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<PAGE>      PAGE  23
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<PAGE>      PAGE  24
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SIGNATURE   MARY K. STERN                                
TITLE       PRESIDENT           
 


<TABLE> <S> <C>

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</TABLE>

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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 5
   <NAME> SIT SCIENCE AND TECHNOLOGY GROWTH FUND, INC.
       
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 6
   <NAME> SIT REGIONAL GROWTH FUND
       
<S>                             <C>
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</TABLE>


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