SIT MUTUAL FUNDS INC
NSAR-A, 2000-02-28
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<PAGE>      PAGE  1
000 A000000 12/31/99
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 PFPC GLOBAL FUND SERVICES
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     16
020 A000002 DAIN BOSWORTH
020 B000002 41-0212020
020 C000002     11
020 A000003 CREDIT LYONNAIS
020 B000003 13-2602298
020 C000003     10
020 A000004 GOLDMAN SACHS
020 B000004 95-6287525
020 C000004     10
020 A000005 MORGAN STANLEY
020 B000005 13-2655998
020 C000005     10
020 A000006 TIR SECURITIES
020 B000006 13-3506065
020 C000006     10
020 A000007 SOLOMON BROS.
020 B000007 13-5365580
020 C000007      9
020 A000008 INSTINET
020 B000008 13-2596491
020 C000008      9
020 A000009 LEHMAN BROS. INC.
020 B000009 13-2518466
020 C000009      7
<PAGE>      PAGE  3
020 A000010 SIGMA SECURITIES
020 B000010 13-3866977
020 C000010      7
021  000000      156
022 A000001 HOUSEHOLD FINANCE CORP.
022 B000001 36-1239445
022 C000001      8441
022 D000001         0
022 A000002 CIT GROUP HOLDINGS
022 B000002 13-2994534
022 C000002      5182
022 D000002         0
022 A000003 ARBOR TRADING
022 B000003 43-0895447
022 C000003      2578
022 D000003      2182
022 A000004 ASSOCIATES CORP OF N.A.
022 B000004 74-1494554
022 C000004      4367
022 D000004         0
022 A000005 GOLDMAN SACHS
022 B000005 95-6287525
022 C000005      3139
022 D000005      1043
022 A000006 CS FIRST BOSTON
022 B000006 13-5659485
022 C000006        39
022 D000006      3750
022 A000007 MONTGOMERY SECURITIES
022 B000007 94-1701676
022 C000007      2105
022 D000007       910
022 A000008 PRUDENTIAL BACHE
022 B000008 22-2347336
022 C000008        55
022 D000008      2799
022 A000009 LEHMAN BROS INC.
022 B000009 13-2518466
022 C000009      1438
022 D000009      1398
022 A000010 PIPER JAFFREY
022 B000010 41-0953246
022 C000010      1162
022 D000010      1586
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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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
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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 Y
025 A000201 MORGAN STANLEY DEAN WITTER
025 B000201 13-2655998
025 C000201 E
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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
<PAGE>      PAGE  14
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008 D040302 4130
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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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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  19
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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<PAGE>      PAGE  22
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<PAGE>      PAGE  23
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<PAGE>      PAGE  24
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<PAGE>      PAGE  25
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008 A000601 SIT INVESTMENT ASSOCIATES, INC.
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<PAGE>      PAGE  26
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<PAGE>      PAGE  27
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<PAGE>      PAGE  28
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<PAGE>      PAGE  29
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SIGNATURE   MARY K. STERN
TITLE       PRESIDENT


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

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC
<SERIES>
   <NUMBER> 001
   <NAME> SIT INTERNATIONAL GROWTH FUND, INC

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

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 02
   <NAME> BALANCED FUND

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

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC
<SERIES>
   <NUMBER> 003
   <NAME> SIT DEVELOPING MARKETS GROWTH FUND, INC

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

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 04
   <NAME> SMALL CAP GROWTH FUND

<S>                             <C>
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<SHARES-COMMON-PRIOR>                        2,753,954
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 05
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000877880
<NAME> SIT MUTUAL FUNDS, INC
<SERIES>
   <NUMBER> 6
   <NAME> SIT REGIONAL GROWTH FUND, INC

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</TABLE>


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