PIONEER GROWTH SHARES
NSAR-B, 1999-02-25
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<PAGE>      PAGE  1
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<PAGE>      PAGE  2
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012 C030001 02109
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020 B000002 13-5674085
020 C000002    105
020 A000003 DONALDSON, LUFKIN
020 B000003 13-2741729
020 C000003    103
020 A000004 PRUDENTIAL SECURITIES
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020 C000004     89
020 A000005 AUTRANET
020 B000005 13-2961507
020 C000005     89
020 A000006 ESI SECURITIES
020 C000006     88
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<PAGE>      PAGE  3
020 A000009 DONALDSON & CORP.
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022 B000003 38-1612444
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022 C000006    285638
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022 C000007    270167
022 D000007         0
022 A000008 CITIGROUP, INC.
022 C000008    262096
022 D000008         0
022 A000009 TRAVELERS CORP.
022 C000009    261157
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022 A000010 TEXACO INC.
022 B000010 71-1383447
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SIGNATURE   ROPERT P. NAULT                              
TITLE       ASST. SECRETARY     
 


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000069404
<NAME> PIONEER GROWTH SHARES
<SERIES>
   <NUMBER> 001
   <NAME> PIONEER GROWTH SHARES CLASS A
       
<S>                             <C>
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<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
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<INVESTMENTS-AT-VALUE>                      2250791038
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<ASSETS-OTHER>                                    2202
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</TABLE>

<TABLE> <S> <C>

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<CIK> 0000069404
<NAME> PIONEER GROWTH SHARES
<SERIES>
   <NUMBER> 002
   <NAME> PIONEER GROWTH SHARES CLASS B
       
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<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              19.70
<EXPENSE-RATIO>                                   1.74
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000069404
<NAME> PIONEER GROWTH SHARES
<SERIES>
   <NUMBER> 003
   <NAME> PIONEER GROWTH SHARES CLASS C
       
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000069404
<NAME> PIONEER GROWTH SHARES
<SERIES>
   <NUMBER> 004
   <NAME> PIONEER GROWTH SHARES CLASS Y
       
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<INVESTMENTS-AT-VALUE>                      2250791038
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</TABLE>

To the Shareowners and the  Board of Trustees of
Pioneer Growth Shares

In planning and  performing  our audit of the  financial  statements  of Pioneer
Growth Shares for the year ended  December 31, 1998, we considered  its internal
control,  including control activities 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 internal control.

The  management of Pioneer  Growth Shares is responsible  for  establishing  and
maintaining internal control. In fulfilling this  responsibility,  estimates and
judgments by management are required to assess the expected benefits and related
costs of controls.  Generally, controls that are relevant to an audit pertain to
the entity's objective of preparing  financial  statements for external purposes
that are fairly  presented in  conformity  with  generally  accepted  accounting
principles.   Those  controls   include  the   safeguarding  of  assets  against
unauthorized acquisition, use, or disposition.

Because of inherent  limitations in internal  control,  error or fraud may occur
and not be detected.  Also,  projection of any evaluation of internal control 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 internal control would not necessarily disclose all matters
in  internal   control  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 one or more
of the internal control components does not reduce to a relatively low level the
risk  that  misstatements  caused  by error or fraud 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
internal  control  and  its  operation,   including  controls  for  safeguarding
securities,  that we consider to be material  weaknesses  as defined above as of
December 31, 1998.

This report is intended solely for the  information  and use of management,  the
Board of Trustees of Pioneer  Growth  Shares,  and the  Securities  and Exchange
Commission.




/s/ ARTHUR ANDERSEN LLP
ARTHUR ANDERSEN LLP
Boston, Massachusetts
February 12, 1999



Pioneer Growth Shares
December 31, 1998 NSAR
Item 77C

(a) The registrant held a special meeting of shareholders on Tuesday, April 21,
1998, subsequently adjourned to Thursday, June 18, 1998, and Tuesday, July 21,
1998.

(b) Response to sub-item 77C(b) previously reported on registrant's NSAR-A filed
electronically with the Commission on August 20, 1998 (Accession No. 0000069404-
98-000012).

(c) Results of shareholder voting on Proposal 3 from the registrant's definitive
proxy statement filed electronically with the Commission on March 12, 1998
(Accession No. 0000069404-98-000007) (the "Proxy Statement") were previously
reported on registrant's NSAR-A filed electronically with the Commission on
August 20, 1998 (Accession No. 0000069404-98-000012). The results of shareholder
voting on Proposal 1 from the Proxy Statement under the caption "Results of
Shareowner Meetings" from the registrant's December 31, 1998 annual report to
shareholders filed electronically with the Commission on February 23, 1999
(Accession No. 0000069404-99-000001) are incorporated herein by reference in
response to sub-item 77C(c).

(d) None.


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