<PAGE> PAGE 1
000 B000000 12/31/95
000 C000000 0000078713
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 PIONEER FUND
001 B000000 811-1466
001 C000000 6177427825
002 A000000 60 STATE STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02109
002 D020000 1820
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
007 C011100 11
007 C011200 12
007 C011300 13
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
008 A000001 PIONEERING MANAGEMENT CORPORATION
008 B000001 A
008 C000001 801-8255
008 D010001 BOSTON
008 D020001 MA
008 D030001 02109
008 D040001 1820
011 A000001 PIONEER FUNDS DISTRIBUTOR, INC.
<PAGE> PAGE 2
011 B000001 8-41256
011 C010001 BOSTON
011 C020001 MA
011 C030001 02109
011 C040001 1820
012 A000001 PIONEERING SERVICES CORPORATION
012 B000001 84-1359
012 C010001 BOSTON
012 C020001 MA
012 C030001 02109
012 C040001 1820
013 A000001 ARTHUR ANDERSEN LLP
013 B010001 BOSTON
013 B020001 MA
013 B030001 02110
013 B040001 2604
015 A000001 BROWN BROTHERS HARRIMAN & CO.
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02105
015 C040001 1820
015 E010001 X
015 A000002 NATIONAL AUSTRALIA BANK
015 B000002 S
015 C010002 MELBOURNE 3000
015 D010002 AUSTRALIA
015 D020002 3000
015 E040002 X
015 A000003 CREDITANSTALT BANK VEREIN
015 B000003 S
015 C010003 VIENNA A-1090
015 D010003 AUSTRIA
015 D020003 A-1090
015 E040003 X
015 A000004 MORGAN GUARANTY TRUST CO., BRUSSELS
015 B000004 S
015 C010004 BRUSSELS 1040
015 D010004 BELGIUM
015 D020004 1040
015 E040004 X
015 A000005 DEN DANSKE BANK, COPENHAGEN
015 B000005 S
015 C010005 COPENHAGEN
015 D010005 DENMARK
015 E040005 X
015 A000006 UNION BANK OF FINLAND
015 B000006 S
015 C010006 HELSINKI
015 D010006 FINLAND
015 D020006 SF-00100
<PAGE> PAGE 3
015 E040006 X
015 A000007 MORGAN GUARANTY TRUST CO., PARIS
015 B000007 S
015 C010007 PARIS 75001
015 D010007 FRANCE
015 D020007 75001
015 E040007 X
015 A000008 J.P. MORGAN
015 B000008 S
015 C010008 FRANKFURT D-6000
015 D010008 GERMANY
015 D020008 D-6000
015 E040008 X
015 A000009 CHASE MANHATTAN BANK, N.A.
015 B000009 S
015 C010009 HONG KONG
015 D010009 HONG KONG
015 E040009 X
015 A000010 BANCA COMMERCIALE ITALIANA, MILAN
015 B000010 S
015 C010010 20121 MILAN
015 D010010 ITALY
015 D020010 20121
015 E040010 X
015 A000011 THE SUMITOMO TRUST & BANKING CO. LTD.
015 B000011 S
015 C010011 TOKYO 100
015 D010011 JAPAN
015 D020011 100
015 E040011 X
015 A000012 CITIBANK, N.A.
015 B000012 S
015 C010012 SEOUL 110
015 D010012 KOREA
015 D020012 110
015 E040012 X
015 A000013 HONG KONG & SHANGHAI BANKING CORP.
015 B000013 S
015 C010013 KUALA LAMPUR 50100
015 D010013 MALAYSIA
015 D020013 50100
015 E040013 X
015 A000014 CITIBANK, N.A.
015 B000014 S
015 C010014 MEXICO CITY 06695
015 D010014 MEXICO
015 D020014 06695
015 E040014 X
015 A000015 ABN/AMRO BANK
015 B000015 S
015 C010015 BREDA
<PAGE> PAGE 4
015 D010015 NETHERLANDS
015 E040015 X
015 A000016 DEN NORSKE CREDITBANK, OSLO
015 B000016 S
015 C010016 SENTRUM N-0107
015 D010016 NORWAY
015 D020016 N-0107
015 E040016 X
015 A000017 CANADIAN IMPERIAL BANK OF COMMERCE
015 B000017 S
015 C010017 CANADA
015 D010017 CANADA
015 E040017 X
015 A000018 NATIONAL AUSTRALIA BANK LTD.
015 B000018 S
015 C010018 NEW ZEALAND
015 D010018 NEW ZEALAND
015 E040018 X
015 A000019 CHASE MANHATTAN BANK
015 B000019 S
015 C010019 0104 SINGAPORE
015 D010019 SINGAPORE
015 D020019 0104
015 E040019 X
015 A000020 BANCO DE SANTANDER, MADRID
015 B000020 S
015 C010020 MADRID 28022
015 D010020 SPAIN
015 D020020 28022
015 E040020 X
015 A000021 SKANDINAVISKA ENSKILDA BANKEN
015 B000021 S
015 C010021 STOCKHOLM, S-10640
015 D010021 SWEDEN
015 D020021 S-10640
015 E040021 X
015 A000022 MORGAN GUARANTY TRUST CO. OF ZURICH
015 B000022 S
015 C010022 ZURICH
015 D010022 SWITZERLAND
015 D020022 CH-8022
015 E040022 X
015 A000023 FIRST NATIONAL BANK OF SOUTHERN AFRICA
015 B000023 S
015 C010023 SOUTH AFRICA
015 D010023 SOUTH AFRICA
015 E040023 X
015 A000024 MORGAN GUARANTY TRUST COMPANY
015 B000024 S
015 C010024 LONDON
015 D010024 UNITED KINGDOM
<PAGE> PAGE 5
015 E040024 X
015 A000025 MORGAN GUARANTY TRUST CO. OF LONDON
015 B000025 S
015 C010025 LONDON
015 D010025 UNITED KINGDOM
015 D020025 EC4YOJT
015 E040025 X
018 000000 Y
019 A000000 Y
019 B000000 25
019 C000000 PIONEERFDS
020 A000001 GOLDMAN SACHS & CO
020 B000001 13-5108880
020 C000001 186
020 A000002 WILLIAM O'NEIL
020 B000002 95-2269163
020 C000002 167
020 A000003 COMMERZBANK
020 B000003 13-3439358
020 C000003 130
020 A000004 PRUDENTIAL SECURITIES
020 B000004 22-2231168
020 C000004 104
020 A000005 C.S. FIRST BOSTON
020 B000005 13-5659485
020 C000005 74
020 A000006 DOMINION
020 B000006 75-2141596
020 C000006 61
020 A000007 JEFFERIES & CO.
020 B000007 95-2622900
020 C000007 61
020 A000008 DEUTSCHE BANK
020 B000008 13-2730828
020 C000008 53
020 A000009 MORGAN STANLEY
020 B000009 13-2655998
020 C000009 52
020 A000010 TUCKER ANTHONY
020 B000010 04-2566229
020 C000010 51
021 000000 1983
022 A000001 HOUSEHOLD FINANCE CP
022 B000001 36-1239445
022 C000001 1209832
022 D000001 0
022 A000002 COMMERICAL CREDIT CORP
022 B000002 52-0883351
022 C000002 360639
022 D000002 0
022 A000003 PRUDENTIAL SECURITIES
<PAGE> PAGE 6
022 B000003 22-2231168
022 C000003 199856
022 D000003 6118
022 A000004 FORD MOTOR CREDIT
022 B000004 38-1612444
022 C000004 200163
022 D000004 0
022 A000005 TEXACO INC.
022 B000005 74-1383447
022 C000005 143547
022 D000005 0
022 A000006 EXXON CREDIT CORPORATION
022 B000006 13-3072652
022 C000006 34006
022 D000006 0
022 A000007 AMERICAN EXPRESS
022 B000007 11-1988350
022 C000007 28246
022 D000007 0
022 A000008 BENEFICIAL CORPORATION
022 B000008 51-0003820
022 C000008 27376
022 D000008 0
022 A000009 NORWEST FINANCIAL
022 B000009 41-1507298
022 C000009 24143
022 D000009 0
022 A000010 BEAR STEARNS
022 B000010 13-3299429
022 C000010 15914
022 D000010 7040
023 C000000 2366447
023 D000000 136377
024 000000 N
025 D000001 0
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
<PAGE> PAGE 7
027 000000 Y
028 A010000 20327
028 A020000 0
028 A030000 0
028 A040000 27524
028 B010000 21625
028 B020000 0
028 B030000 0
028 B040000 25192
028 C010000 13030
028 C020000 9115
028 C030000 0
028 C040000 14993
028 D010000 14258
028 D020000 0
028 D030000 0
028 D040000 18086
028 E010000 13608
028 E020000 0
028 E030000 0
028 E040000 17442
028 F010000 17662
028 F020000 190575
028 F030000 0
028 F040000 14616
028 G010000 100510
028 G020000 199690
028 G030000 0
028 G040000 117853
028 H000000 134938
029 000000 Y
030 A000000 7071
030 B000000 5.75
030 C000000 0.00
031 A000000 924
031 B000000 0
032 000000 6147
033 000000 0
034 000000 Y
035 000000 0
036 A000000 N
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 Y
041 000000 Y
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 100
<PAGE> PAGE 8
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 3776
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.000
048 A010000 250000
048 A020000 0.500
048 B010000 50000
048 B020000 0.480
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 300000
048 K020000 0.450
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 N
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
<PAGE> PAGE 9
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 50
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
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
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 N
066 E000000 Y
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 Y
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
<PAGE> PAGE 10
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 N
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 698661
071 B000000 703483
071 C000000 2244582
071 D000000 31
072 A000000 12
072 B000000 955
072 C000000 66095
072 D000000 0
072 E000000 0
072 F000000 10330
072 G000000 0
072 H000000 0
072 I000000 6225
072 J000000 249
072 K000000 0
072 L000000 120
072 M000000 51
072 N000000 98
072 O000000 0
072 P000000 0
072 Q000000 120
072 R000000 85
072 S000000 49
072 T000000 3776
072 U000000 0
<PAGE> PAGE 11
072 V000000 0
072 W000000 106
072 X000000 21209
072 Y000000 0
072 Z000000 45841
072AA000000 194768
072BB000000 0
072CC010000 287048
072CC020000 0
072DD010000 45343
072DD020000 0
072EE000000 194671
073 A010000 0.4861
073 A020000 0.0000
073 B000000 2.0891
073 C000000 0.0000
074 A000000 607
074 B000000 0
074 C000000 12322
074 D000000 0
074 E000000 73216
074 F000000 2374709
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 8091
074 M000000 72
074 N000000 2469017
074 O000000 0
074 P000000 1710
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 1209
074 S000000 0
074 T000000 2466098
074 U010000 101253
074 U020000 0
074 V010000 24.36
074 V020000 0.00
074 W000000 0.0000
074 X000000 231002
074 Y000000 0
075 A000000 0
075 B000000 2258969
076 000000 0.00
077 A000000 Y
077 B000000 Y
<PAGE> PAGE 12
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 Y
077 Q020000 N
077 Q030000 N
078 000000 N
080 A000000 ICI MUTUAL INSURANCE
080 C000000 25000
081 A000000 Y
081 B000000 40
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 N
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 WILLIAM H. KEOUGH
TITLE TREASURER
To the Board of Trustees of
Pioneer Fund:
In planning and performing our audit of the financial statements of Pioneer
Fund for the year ended December 31, 1995, we considered its internal control
structure, including procedures for safeguarding securities, in order to
determine our auditing procedures for the purpose of expressing our opinion on
the financial statements and to comply with the requirements of Form N-SAR, not
to provide assurance on the internal control structure.
The management of Pioneer Fund is responsible for establishing and maintaining
an internal control structure. In fulfilling this responsibility, estimates and
judgments by management are required to assess the expected benefits and related
costs of internal control structure policies and procedures. Two of the
objectives of an internal control structure are to provide management with
reasonable, but not absolute, assurance that assets are safeguarded against loss
from unauthorized use or disposition and transactions are executed in accordance
with management's authorization and recorded properly to permit preparation of
financial statements in conformity with generally accepted accounting
principles.
Because of inherent limitations in any internal control structure, errors or
irregularities may occur and may not be detected. Also, projection of any
evaluation of the structure to future periods is subject to the risk that it may
become inadequate because of changes in conditions or that the effectiveness of
the design and operation may deteriorate.
Our consideration of the internal control structure would not necessarily
disclose all matters in the internal control structure that might be material
weaknesses under standards established by the American Institute of Certified
Public Accountants. A material weakness is a condition in which the design or
operation of the specific internal control structure elements does not reduce to
a relatively low level the risk that errors or irregularities in amounts that
would be material in relation to the financial statements being audited may
occur and not be detected within a timely period by employees in the normal
course of performing their assigned functions. However, we noted no matters
involving the internal control structure, including procedures for safeguarding
securities, that we consider to be material weaknesses, as defined above, as of
December 31, 1995.
This report is intended solely for the information and use of management and the
Securities and Exchange Commission.
/s/ ARTHUR ANDERSEN LLP
ARTHUR ANDERSEN LLP
Boston, Massachusetts
February 2, 1996
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000078713
<NAME> PIONEER FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1995
<PERIOD-END> DEC-31-1995
<INVESTMENTS-AT-COST> 1639603
<INVESTMENTS-AT-VALUE> 2460247
<RECEIVABLES> 8091
<ASSETS-OTHER> 72
<OTHER-ITEMS-ASSETS> 607
<TOTAL-ASSETS> 2469017
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2919
<TOTAL-LIABILITIES> 2919
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1644509
<SHARES-COMMON-STOCK> 101253
<SHARES-COMMON-PRIOR> 94325
<ACCUMULATED-NII-CURRENT> 951
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 820638
<NET-ASSETS> 2466098
<DIVIDEND-INCOME> 66095
<INTEREST-INCOME> 955
<OTHER-INCOME> 0
<EXPENSES-NET> (21209)
<NET-INVESTMENT-INCOME> 45841
<REALIZED-GAINS-CURRENT> 194768
<APPREC-INCREASE-CURRENT> 287048
<NET-CHANGE-FROM-OPS> 527657
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (45343)
<DISTRIBUTIONS-OF-GAINS> (194671)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9317
<NUMBER-OF-SHARES-REDEEMED> 11449
<SHARES-REINVESTED> 9061
<NET-CHANGE-IN-ASSETS> 455047
<ACCUMULATED-NII-PRIOR> 457
<ACCUMULATED-GAINS-PRIOR> 63
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 10330
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 21453
<AVERAGE-NET-ASSETS> 2060869
<PER-SHARE-NAV-BEGIN> 21.32
<PER-SHARE-NII> 0.49
<PER-SHARE-GAIN-APPREC> 5.13
<PER-SHARE-DIVIDEND> (0.49)
<PER-SHARE-DISTRIBUTIONS> (2.09)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 24.36
<EXPENSE-RATIO> 0.95
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>