<PAGE> PAGE 1
000 B000000 03/31/2000
000 C000000 0000071958
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 U
001 A000000 NICHOLAS FUND, INC.
001 B000000 811-1728
001 C000000 4142724650
002 A000000 700 NORTH WATER STREET, SUITE 1010
002 B000000 MILWAUKEE
002 C000000 WI
002 D010000 53202
002 D020000 4276
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
013 A000001 ARTHUR ANDERSEN LLP
013 B010001 MILWAUKEE
013 B020001 WI
013 B030001 53202
013 B040001 5390
020 A000001 GOLDMAN SACHS
020 B000001 13-5108880
020 C000001 585
020 A000002 SALOMON SMITH BARNEY
020 B000002 13-1912900
020 C000002 492
020 A000003 BEAR STEARNS
020 B000003 13-4946705
020 C000003 330
020 A000004 CS FIRST BOSTON
020 B000004 13-5659485
020 C000004 251
020 A000005 MORGAN STANLEY DEAN WITTER DISCOVER
020 B000005 13-2655978
020 C000005 248
020 A000006 DONALDSON LUFKIN & JENRETTE
020 B000006 13-2741729
020 C000006 247
020 A000007 INSTINET
020 B000007 13-3443995
020 C000007 229
020 A000008 MERRILL LYNCH & CO.
020 B000008 39-1035790
<PAGE> PAGE 2
020 C000008 208
020 A000009 DOWLING & PARTNERS
020 B000009 06-1400223
020 C000009 173
020 A000010 ING BARINGS LLC
020 B000010 13-3856626
020 C000010 162
021 000000 4936
022 A000001 FIRSTAR BANK MILWAUKEE
022 B000001 39-0281225
022 C000001 1883645
022 D000001 238407
022 A000002 MARSHALL & ILSLEY
022 B000002 39-1610688
022 C000002 693689
022 D000002 0
022 A000003 MERRILL LYNCH
022 B000003 39-1035790
022 C000003 624816
022 D000003 26343
022 A000004 SALOMON SMITH BARNEY
022 B000004 13-1912900
022 C000004 466678
022 D000004 14185
022 A000005 GOLDMAN SACHS & CO.
022 B000005 13-5108880
022 C000005 352476
022 D000005 125101
022 A000006 CS FIRST BOSTON
022 B000006 13-5659485
022 C000006 253871
022 D000006 61569
022 A000007 LEHMAN BROTHERS
022 B000007 13-2518466
022 C000007 276519
022 D000007 0
022 A000008 U.S. BANCORP INVESTMENTS
022 B000008 84-1019337
022 C000008 141625
022 D000008 0
022 A000009 DAIMLER CHRYSLER
022 B000009 22-1760935
022 C000009 124808
022 D000009 0
022 A000010 MORGAN STANLEY DEAN WITTER DISCOVER
022 B000010 13-2655978
022 C000010 51974
022 D000010 0
023 C000000 5124854
023 D000000 529997
024 000000 Y
<PAGE> PAGE 3
025 A000001 MORGAN STANLEY DEAN WITTER & CO.
025 B000001 36-3145972
025 C000001 E
025 D000001 56115
025 A000002 MERRILL LYNCH & CO.
025 B000002 13-2740599
025 C000002 E
025 D000002 73500
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
028 A010000 24880
028 A020000 0
028 A030000 0
028 A040000 58766
028 B010000 20847
028 B020000 0
028 B030000 0
028 B040000 82627
028 C010000 20234
028 C020000 84209
028 C030000 0
028 C040000 116175
028 D010000 23399
028 D020000 0
028 D030000 0
028 D040000 190725
028 E010000 18333
028 E020000 0
028 E030000 0
028 E040000 154725
028 F010000 19091
028 F020000 0
028 F030000 0
028 F040000 160294
028 G010000 126784
028 G020000 84209
028 G030000 0
028 G040000 763312
028 H000000 0
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
<PAGE> PAGE 4
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 Y
066 E000000 N
066 F000000 N
066 G000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
<PAGE> PAGE 5
070 P010000 Y
070 P020000 Y
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 1942734
071 B000000 2815340
071 C000000 4891333
071 D000000 40
072 A000000 12
072 B000000 19907
072 C000000 42230
072 D000000 0
072 E000000 0
072 F000000 34445
072 G000000 0
072 H000000 0
072 I000000 2561
072 J000000 260
072 K000000 372
072 L000000 139
072 M000000 15
072 N000000 110
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 21
072 S000000 37
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 88
072 X000000 38048
072 Y000000 0
072 Z000000 24089
072AA000000 943647
072BB000000 0
072CC010000 0
072CC020000 657712
072DD010000 19671
072DD020000 0
072EE000000 384360
073 A010000 0.3114
073 A020000 0.0000
073 B000000 5.9433
073 C000000 0.0000
074 A000000 0
074 B000000 0
074 C000000 224023
074 D000000 0
<PAGE> PAGE 6
074 E000000 0
074 F000000 4677312
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 25755
074 K000000 0
074 L000000 1987
074 M000000 1081
074 N000000 4930158
074 O000000 25245
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 4007
074 S000000 0
074 T000000 4900906
074 U010000 57959
074 U020000 0
074 V010000 84.56
074 V020000 0.00
074 W000000 0.0000
074 X000000 142463
074 Y000000 0
075 A000000 0
075 B000000 5247354
076 000000 0.00
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 A000000 CHUBB GROUP
080 C000000 6500
<PAGE> PAGE 7
081 A000000 Y
081 B000000 6
082 A000000 Y
082 B000000 25
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
SIGNATURE THOMAS J. SAEGER
TITLE EX VICE-PRESIDENT
<TABLE> <S> <C>
<ARTICLE> 6
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 3001965515
<INVESTMENTS-AT-VALUE> 4901334498
<RECEIVABLES> 27742056
<ASSETS-OTHER> 1081205
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4930157759
<PAYABLE-FOR-SECURITIES> 25244933
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4006631
<TOTAL-LIABILITIES> 29251564
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2128447613
<SHARES-COMMON-STOCK> 57959184
<SHARES-COMMON-PRIOR> 65952516
<ACCUMULATED-NII-CURRENT> 5009937
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 868297379
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1899151266
<NET-ASSETS> 4900906195
<DIVIDEND-INCOME> 42229671
<INTEREST-INCOME> 19907153
<OTHER-INCOME> 0
<EXPENSES-NET> 38048325
<NET-INVESTMENT-INCOME> 24088499
<REALIZED-GAINS-CURRENT> 943646604
<APPREC-INCREASE-CURRENT> (657712416)
<NET-CHANGE-FROM-OPS> 310022687
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 19670553
<DISTRIBUTIONS-OF-GAINS> 384359917
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3201699
<NUMBER-OF-SHARES-REDEEMED> 15655897
<SHARES-REINVESTED> 4460866
<NET-CHANGE-IN-ASSETS> (718474002)
<ACCUMULATED-NII-PRIOR> 244740
<ACCUMULATED-GAINS-PRIOR> 308912359
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 34445024
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 38048325
<AVERAGE-NET-ASSETS> 5247354
<PER-SHARE-NAV-BEGIN> 85.20
<PER-SHARE-NII> .39
<PER-SHARE-GAIN-APPREC> 5.22
<PER-SHARE-DIVIDEND> .31
<PER-SHARE-DISTRIBUTIONS> 5.94
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 84.56
<EXPENSE-RATIO> .73
</TABLE>
