PIONEER THREE
PRES14A, 1995-11-17
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                                                               File No. 2-79140
                                                              File No. 811-3564

                                  SCHEDULE 14A
                                 (Rule 14a-101)

                     INFORMATION REQUIRED IN PROXY STATEMENT

                            SCHEDULE 14A INFORMATION



                    PROXY STATEMENT PURSUANT TO SECTION 14(A)
             OF THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. )


Filed by the registrant                         [X]


Check the appropriate box:

[X]   Preliminary proxy statements              [ ]  Confidential, for Use
                                                     of the Commission
                                                     Only (as permitted
                                                     by Rule 14a-6(e)(2))

[ ]   Definitive proxy statement

[ ]   Definitive additional materials

[ ]   Soliciting material pursuant to Rule 14a-11(c) or Rule 14a-12





                                  Pioneer Three
                 (Name of Registrant as Specified in Its Charter


                                  Pioneer Three
                   (Name of Person(s) Filing Proxy Statement)



Payment of filing fee (check the appropriate box):

[X]  $125 per Exchange Act Rule 0-11(c)(1)(ii),  14a-6(i)(1),  or 14a-6(i)(2) or
     Item 22(a)(2).




<PAGE>

                           PRELIMINARY PROXY MATERIALS



                                  PIONEER THREE

                                 60 State Street
                           Boston, Massachusetts 02109

                                 1-800-225-6292

                    NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                      TO BE HELD TUESDAY, JANUARY 23, 1996

         A Special  Meeting of  Shareholders  of Pioneer Three, a  Massachusetts
business  trust (the  "Fund")  will be held at the offices of Hale and Dorr,  60
State Street,  26th Floor,  Boston,  Massachusetts  02109, at 2:00 p.m.,  Boston
time,  on  Tuesday,  January 23,  1996 to  consider  and act upon the  following
Proposals:

         (1) To approve amendments to the Fund's investment objectives;

         (2)  To  approve  a  new  Management  Contract  between  the  Fund  and
Pioneering  Management  Corporation,  the  Fund's  investment  adviser  ("PMC"),
including a performance based management fee;

         (3) To approve an  Agreement  and Plan of  Reorganization  pursuant  to
which the Fund will be reorganized as a Delaware business trust;

         (4) To  elect  the  eight  (8)  Trustees  named in the  attached  Proxy
Statement  to serve on the Board of Trustees  until their  successors  have been
duly elected and qualified;

         (5) To  approve  an  amendment  to the  Fund's  fundamental  investment
restriction regarding repurchase agreements;

         (6) To approve the  elimination  of the Fund's  fundamental  investment
restriction regarding short sales;

         (7) To  approve  an  amendment  to the  Fund's  fundamental  investment
restriction regarding underwriting;

         (8) To approve the  elimination  of the Fund's  fundamental  investment
policy regarding investment in investment companies;

         (9) To approve the  elimination  of the Fund's  fundamental  investment
restriction  regarding  percentage  investment  in the  securities  of a  single
issuer;

         (10) To approve the  elimination of the Fund's  fundamental  investment
restriction regarding investment in the voting securities of a single issuer;

         (11) To  approve an  amendment  to the  Fund's  fundamental  investment
restriction regarding commodities;

         (12) To approve the  elimination of the Fund's  fundamental  investment
restriction regarding restricted securities;

         (13) To approve the  elimination of the Fund's  fundamental  investment
restriction regarding "unseasoned" issuers;

         (14) To approve the  elimination of the Fund's  fundamental  investment
restriction regarding affiliates of affiliates of the Fund;

         (15) To  approve an  amendment  to the  Fund's  fundamental  investment
restriction regarding loans;

         (16) To  approve an  amendment  to the  Fund's  fundamental  investment
restriction regarding borrowing;

         (17)  To  approve  the  addition  of  a  new   fundamental   investment
restriction regarding "senior securities";

         (18) To approve the  elimination of the Fund's  investment  restriction
regarding industry concentration;

         (19) To ratify  the  selection  of Arthur  Andersen  LLP as the  Fund's
independent  public  accountants for the fiscal year ending  September 30, 1996;
and

         (20) To transact  such other  business as may properly  come before the
meeting or any adjournments thereof.

         Shareholders of record as of the close of business on November 27, 1995
are  entitled  to vote at the  meeting or any  adjournments  thereof.  The Proxy
Statement and proxy card are being mailed to  shareholders  on or about December
1, 1995.

                                        By Order Of The Board of Trustees
                                        Joseph P. Barri, Secretary
Boston, Massachusetts
December 1, 1995
                                        
                               ------------------

WHETHER  OR NOT YOU EXPECT TO BE PRESENT AT THE  MEETING,  PLEASE  COMPLETE  AND
RETURN THE ENCLOSED  PROXY CARD.  YOU MAY STILL VOTE IN PERSON IF YOU ATTEND THE
MEETING.


<PAGE>


                           PRELIMINARY PROXY MATERIALS

                                  PIONEER THREE

                                 60 State Street
                           Boston, Massachusetts 02109

                                 1-800-225-6292

                         SPECIAL MEETING OF SHAREHOLDERS
                                JANUARY 23, 1996

                                 PROXY STATEMENT


         This Proxy  Statement is furnished to  shareholders of Pioneer Three, a
Massachusetts  business trust (the "Fund"),  in connection with the solicitation
of  proxies  by  the  Board  of  Trustees  for  use at the  Special  Meeting  of
Shareholders  of the Fund,  to be held at the offices of Hale and Dorr, 60 State
Street, 26th Floor,  Boston,  Massachusetts 02109, at 2:00 p.m., Boston time, on
Tuesday, January 23, 1996, and at any adjournments thereof (the "Meeting"). This
Proxy  Statement and enclosed proxy are being mailed to shareholders on or about
December 1, 1995. The Fund's annual report for its fiscal period ended September
30, 1995 may be obtained  free of charge by writing to the Fund at its executive
offices,   60  State  Street,   Boston,   Massachusetts   02109  or  by  calling
1-800-225-6292.

         Shareholders of record as of the close of business on November 27, 1995
(the  "Record  Date") are entitled to vote on all business of the Meeting or any
adjournments thereof. As of the Record Date, there were outstanding ____________
shares of beneficial interest of the Fund. To the knowledge of the management of
the Fund, no person  beneficially owns more than 5% of the outstanding shares of
the Fund as of the Record Date.

PROPOSAL 1.  APPROVAL OF AMENDMENT TO THE FUND'S INVESTMENT OBJECTIVES.

         At a  Meeting  held on  November  7,  1995,  the  Trustees  of the Fund
unanimously  approved and voted to recommend that the  shareholders  of the Fund
approve a change in the Fund's  investment  objective from reasonable income and
growth of capital to capital growth exclusively.

Current Objectives and Related Policies

         In pursuing its  objective of growth of capital,  the Fund invests only
in companies with market capitalizations not exceeding $750 million. In order to
pursue the other  objective of  reasonable  income,  the largest  portion of the
Fund's  portfolio,  at any time,  has been  invested  in  securities  which have
produced income in the form of dividends or interest over the past year.
<PAGE>

Reasons for Change

         Pioneering  Management  Corporation,   the  Fund's  investment  adviser
(PMC"), 60 State Street, Boston, Massachusetts 02109, has viewed the Fund's $750
million capitalization  limitation policy as the primary means to achieving good
long-term  results  because of the high  earnings  potential  presented  by such
issues.  It has  recommended  the  change to the sole  investment  objective  of
capital  growth  because  investing  in such stocks that are also income  paying
presents  unnecessary  limitations  on available  investments.  This is the case
because  many  attractive   emerging  companies  reinvest  profits  in  business
expansion rather than making significant current income distributions.

         In  addition,  the Fund is limited by its  investment  restrictions  to
investment in no more than 10% of a company's outstanding voting securities.  As
the Fund's net assets  have grown,  this  restriction  has made it  increasingly
difficult to find sufficient suitable investments for the Fund. Even if the Fund
continues  to be able to  remain in  technical  compliance  with its  investment
policies, PMC believes that the Fund's dual objectives are difficult to achieve.

Changes in Related Investment Policies

         PMC  believes  that in pursuing  the  investment  objective  of capital
growth,  attractive  investment  opportunities  for the Fund will be provided by
mid-capitalization companies. For this purpose, mid-capitalization companies are
companies  with a market  capitalization  of less than $5 billion.  PMC believes
that   Mid-capitalization   companies   provide  similar  capital   appreciation
opportunities  to  small  capitalization  companies  because  of high  potential
earnings  growth  but  present  fewer  difficulties  in  identifying   potential
investments.

         Consequently,  whether  or  not  the  Proposal  to  change  the  Fund's
investment  objective  is  approved  by  shareholders,  the  Trustees  intend to
eliminate the Fund's current $750 million  capitalization  investment limitation
discussed above, to adopt a policy of investing at least 65% of the Fund's total
assets in the securities of  mid-capitalization  companies in its place,  and to
change the name of the Fund to "Pioneer  Mid-Cap Fund".  As a  "non-fundamental"
policy, this mid-capitalization investment policy could be changed in the future
by the Trustees without shareholder  approval,  although the SEC currently takes
the position  that the Fund could not  continue to use  "Mid-Cap" in its name if
the policy were changed to reduce the percentage of such  investment  below 65%.
The Trustees have no current intention of making such a change.

         In addition,  if the proposed  change in  objectives  is approved,  the
Trustees  intend to  eliminate  the Fund's  current  policy  discussed  above of


                                      -2-
<PAGE>

investing the largest portion of the Fund's  portfolio in securities  which have
paid income over the past year.  Although  the Fund will still be able to invest
in income producing securities,  it will not be required to do so and payment of
income  will  be an  entirely  incidental  consideration  in  the  elections  of
portfolio investments for the Fund.

         In proposing the change in objective, the Trustees also note that there
are three  other  funds in the Pioneer  family  that  combine  growth and income
objectives,  but  which  do not  have any  limitations  in  terms of the  market
capitalization  of  portfolio  holdings.  These Funds are Pioneer  Equity-Income
Fund, Pioneer II and Pioneer Fund.

         Except to the extent  described in Proposals 5-18, the other investment
policies described in the Fund's prospectus will remain unchanged.

Risks and Other Special Considerations

         Because  the Fund will no  longer  pursue an  objective  of  reasonable
income or be required  to invest at all in income  producing  securities,  it is
expected that the Fund's  dividend  rate may be reduced over time.  Accordingly,
shareholders  seeking current income are advised to reevaluate  whether the Fund
continues to be a suitable  investment  vehicle for their particular  investment
needs.

         The  transition  to the Fund's new  investment  objective  and  related
policies  may  involve  higher  than  normal  portfolio  turnover  for a  period
following the change.  High portfolio turnover involves  correspondingly  higher
brokerage  commissions and other transaction costs, which will be borne directly
by the Fund,  and could  involve  realization  of  taxable  gains  that would be
taxable when distributed to shareholders.

         Like the  small-capitalization  companies  in which the Fund  currently
concentrates  its  investments,  mid-capitalization  companies  may also involve
greater risk than larger  capitalization  companies.  Such  companies tend to be
more limited in their operations and newer than larger-capitalization  companies
and may be dependant upon a single proprietary product or market niche. They may
have limited product lines, markets or financial resources, or may depend upon a
limited  management  group.  Typically,  such  companies  have fewer  securities
outstanding and may be less liquid than large companies.  Their common stock and
other securities may trade less frequently and in limited volume. The securities
of such companies are generally more sensitive to purchase and sale transactions
and, therefore, the prices of their securities tend to be more volatile than the
securities of larger companies.

                                      -3-
<PAGE>

         It should be noted that the Fund is not  restricted  from  investing in
smaller-capitalization  companies  and  may  continue  to  hold  such  companies
indefinitely. However, the proposed changes will significantly expand the number
of companies in which the Fund may invest.

Required Vote

         Adoption  of  Proposal 1 requires  the  approval  of a majority  of the
outstanding  voting  securities of the Fund, which under the 1940 Act is defined
to mean the  affirmative  vote of the lesser of (i) 67% or more of the shares of
the Fund represented at the Meeting,  if at least 50% of all outstanding  shares
of the  Fund  are  represented  at the  Meeting,  or  (ii)  50% or  more  of the
outstanding  shares of the Fund  entitled  to vote at the  Meeting  (a "1940 Act
Majority Vote").

         If this Proposal 1 is not approved by the shareholders of the Fund, the
Fund will continue to adhere to its current investment objectives.

         FOR THE REASONS SET FORTH  ABOVE,  THE TRUSTEES  UNANIMOUSLY  RECOMMEND
THAT THE  SHAREHOLDERS OF THE FUND VOTE IN FAVOR OF THE APPROVAL OF THE PROPOSAL
TO AMEND THE FUND'S INVESTMENT OBJECTIVES.


PROPOSAL 2.  APPROVAL OF NEW MANAGEMENT CONTRACT

Summary

         Pioneering  Management  Corporation has served as the Fund's investment
adviser  since the Fund's  inception  on November  12,  1982.  PMC serves as the
investment  adviser for the Pioneer  Family of Mutual  Funds,  Pioneer  Interest
Shares, Inc.  ("Interest Shares") and for certain other institutional  accounts.
PMC, a registered  investment adviser under the Investment Advisers Act of 1940,
as amended,  is a wholly owned  subsidiary of PGI, a Delaware  corporation  with
publicly traded shares. PGI is located at 60 State Street, Boston, Massachusetts
02109.

         At the Meeting held on November 7, 1995, the Trustees, including all of
the Trustees who are not  "interested  persons" of the Fund or PMC,  unanimously
approved  and voted to  recommend  that the  shareholders  of the Fund approve a
Proposal to terminate the Fund's existing  Management  Contract  between PMC and
the Fund (the "Existing  Contract") and to adopt a new Management  Contract (the
"Proposed Contract"). Under the Proposed Contract, the form of which is attached
to this Proxy  Statement  as EXHIBIT A, THERE WILL BE AN  INCREASE  IN THE BASIC
RATE OF MANAGEMENT  FEES PAID BY THE FUND TO PMC. AS DESCRIBED MORE FULLY BELOW,
DEPENDING  UPON  THE  FUND'S  INVESTMENT  PERFORMANCE  RELATIVE  TO  A  SELECTED


                                      -4-
<PAGE>

SECURITIES  INDEX,  THIS BASIC FEE WILL BE INCREASED  OR  DECREASED  AND THE FEE
ULTIMATELY  PAID BY THE FUND MAY BE  HIGHER OR LOWER  THAN  THAT PAID  UNDER THE
EXISTING CONTRACT.

Existing Management Contract

         Pursuant  to  the  terms  of  the  Existing  Contract,  PMC  serves  as
investment  adviser to the Fund and is responsible for the overall management of
the  Fund's  business  affairs  subject  only to the  authority  of the Board of
Trustees.  PMC is authorized to buy and sell  securities  for the account of the
Fund and to  designate  brokers to carry out such  transactions,  subject to the
right of the Trustees to disapprove  any such purchase or sale. PMC may not make
any purchase the cost of which  exceeds funds  currently  available for the Fund
and may not make any  purchase  which would  violate any  fundamental  policy or
restriction  with respect to the Fund in the Fund's  Prospectus  or Statement of
Additional Information as in effect from time to time.

         PMC pays all expenses,  including  executive salaries and the rental of
office  space,  related to its services  for the Fund with the  exception of the
following  which are paid by the Fund: (i) charges and expenses for  determining
from time to time the value of the net assets of the Fund and the keeping of its
books and records, (ii) the charges and expenses of auditors,  (iii) the charges
and expenses of any custodian,  transfer agent, plan agent,  dividend disbursing
agent and registrar appointed by the Fund, (iv) brokers' commissions,  and issue
and  transfer  taxes,  chargeable  to the  Fund in  connection  with  securities
transactions  to which the Fund is a party,  (v)  insurance  premiums,  interest
charges,  dues and fees for membership in trade  associations  and all taxes and
corporate  fees  payable  by the Fund to  federal,  state or other  governmental
agencies,  (vi)  fees and  expenses  involved  in  registering  and  maintaining
registrations  of the Fund and of its shares with the  Securities  and  Exchange
Commission (the "SEC"),  state  securities  agencies and foreign  jurisdictions,
including  the  preparation  of   prospectuses   and  statements  of  additional
information for filing with such agencies,  (vii) all expenses of  shareholders'
and Trustees' meetings and of preparing, printing and distributing prospectuses,
notices,  proxy  statements and all reports to shareholders  and to governmental
agencies,  (viii)  charges and  expenses of legal  counsel to the Fund;  (ix) if
applicable, distribution expenses of the Fund pursuant to a Plan of Distribution
in accordance  with Rule 12b-1  promulgated by the SEC pursuant to the 1940 Act,
and (x)  compensation  of those Trustees of the Fund who are not affiliated with
or interested  persons of PMC, the Fund (other than as  Trustees),  PGI, or PFD.
The  Existing  Contract  was  initially  approved  by the Board of  Trustees  on
__________,  199[4] and its renewal was most recently approved by the Board at a
meeting  held in April,  1995.  On October 12, 1990,  the Existing  Contract was
submitted to and approved by the shareholders of the Fund. The Existing Contract


                                      -5-
<PAGE>

is  renewable  annually  by the vote of PMC's Board and by vote of a majority of
the Funds Board,  including a majority of the  Trustees who are not  "interested
persons"  of the Fund,  PMC or PFD,  cast in person at a meeting  called for the
purpose of voting on such renewal.  The Existing Contract terminates if assigned
(as  defined in the 1940 Act) and may be  terminated  without  penalty by either
party by vote of its Board or a majority of its  outstanding  voting  securities
and upon 60 days' written notice.

         As compensation for its management  services and certain expenses which
PMC  incurs on behalf of the Fund,  the Fund pays PMC an annual  management  fee
under the  Existing  Contract  equal to 0.50% of the  Fund's  average  daily net
assets  up to $250  million,  0.48% of the next $50  million,  and  0.45% of the
excess over $300 million. This fee is computed daily and paid monthly.

Proposed Management Contract

         The terms of the Proposed  Contract differ materially from those of the
Existing  Contract  in  respect  of the  management  fees  payable to PMC and in
certain other respects described below.

Basic Fee

         As compensation for its management  services and certain expenses which
PMC  incurs  on  behalf  of the  Fund,  the Fund  would  pay PMC a basic  annual
management fee under the Proposed Contract of 0.625% of the Fund's average daily
net assets (the "Basic Fee").  One twelfth (1/12) of this annual Basic Fee would
be applied to the Fund's average daily net assets for the current month,  giving
a dollar amount which is the monthly fee.

         The Basic Fee represents an increase in the management fee rate payable
to PMC over the rates under the Existing Contract. The Board determined that the
Basic Fee is fair and reasonable  apart from the  application of the performance
fee adjustment  described  below under which the Basic Fee would be increased or
decreased based upon the Fund's performance.

Performance Fee Adjustment

         The Board of Trustees is proposing the  implementation of a performance
adjustment  which will either increase or decrease the monthly Basic Fee paid by
the  Fund  to PMC  based  on the  performance  of the  Fund as  compared  to the
investment  record (the  "record") of the Standard & Poors  Mid-Cap 400 Index of
mid-capitalization  stocks (the "Index"). This Index is composed of 400 domestic
stocks chosen for market size, liquidity, and industry group representation.  It
is a  market-value  weighted  index and was the first  benchmark of midcap stock
price  movements.  It is not  possible to predict the effect of the  performance
adjustment on the overall compensation to PMC in the future since it will depend


                                      -6-
<PAGE>

on the performance of the Fund relative to the record of the Index.

         The Board  determined  that it would be  appropriate  to increase PMC's
compensation when the Fund's performance exceeds that of an objective index and,
conversely,  to reduce PMC's  compensation when the Fund's performance is poorer
than the  record  of that  index.  The  Index was  deemed  appropriate  for this
comparison  because it is broad-based  and its  characteristics  are expected to
correlate  well  with the  Fund's  stock  selections.  The  Board  feels  that a
performance  adjustment is appropriate for funds of this type and that providing
incentives to PMC based on its performance benefits shareholders.

         The Board is proposing  that there be a  performance  adjustment  which
would  increase or decrease the Basic fee based on the  performance  of the Fund
over a 36-month  performance period. The Basic Fee would be subject to upward or
downward  adjustment  depending on whether,  and to what extent,  the investment
performance of the Fund for the performance  period exceeds,  or is exceeded by,
the record of the Index over the same period. This performance  comparison would
be made at the end of each month.  Each  percentage  point of difference  (up to
maximum  difference  of  +/-10  percentage  points)  would  be  multiplied  by a
performance  adjustment  rate of .02%. The maximum  adjustment rate is therefore
+/-.20%. One-twelfth of this rate would then be applied to the average daily net
assets of the Fund over the entire  performance  period which covers the current
month and the prior 35 months ("performance  period"),  giving the dollar amount
which will be added to (or subtracted from) the Basic fee.

         Application  of  Performance   Adjustment.   The   application  of  the
performance  adjustment is  illustrated by the following  hypothetical  example,
assuming  that the net asset  value of the Fund and the level of the Index  were
$10 and 100, respectively, on the first day of the performance period.

              Investment Performance*       Cumulative Change

          First Day      End of Period    Absolute     Percentage 
                                                       Points

Fund       $ 10               $ 13         +$ 3           +30%
Index       100                123         + 23           +23%


         *Reflects  performance  at net asset  value.  Any  dividends or capital
gains  distributions  paid by the Fund are treated as if reinvested in shares of
the Fund at net asset value as of the payment date and any dividends paid on the
securities  which  comprise  the  Index  are  treated  as if  reinvested  on the
ex-dividend date.

                                      -7-
<PAGE>

         The difference in relative performance for the performance period is +7
percentage points. Accordingly,  the annualized management fee rate for the last
month of the performance  period would be calculated as follows:  One-twelfth of
the Basic Fee of 0.625% would be applied to the Fund's  average daily net assets
for the month resulting in a dollar amount.  The +7 percentage  point difference
is multiplied by the  performance  adjustment  rate of 0.02% producing a rate of
0.14%.  One-twelfth of this rate is then applied to the average daily net assets
of the Fund over the  performance  period  resulting in a dollar amount which is
added to the dollar  amount of the Basic  Fee.  The  management  fee paid is the
dollar  amount  calculated  for  the  performance   period.  If  the  investment
performance of the Index during the performance  period exceeded the performance
record of the Fund,  the dollar amount of the  performance  adjustment  would be
deducted from the Basic Fee.

         Because  the  adjustment  to the Basic Fee is based on the  comparative
performance of the Fund and the record of the Index,  the controlling  factor is
not whether Fund performance is up or down, but whether it is up or down more or
less  than  the  record  of the  Index.  Moreover,  the  comparative  investment
performance  of the Fund is based  solely  on the  relevant  performance  period
without regard to the cumulative  performance over a longer or shorter period of
time.

         Phase-In of Performance  Adjustment.  For the period  starting with the
effective  date of the Proposed  Contract  (expected to be February 1, 1996) and
ending  June 30,  1995,  the Board  believes it is  appropriate  for the Fund to
continue  to pay the same  management  fee rate as under the  Existing  Contract
which is lower than the Basic Fee that  would  otherwise  be in  effect.  In the
event that  shareholder  approval of the Proposed  Contract is delayed  until an
adjourned  session of the meeting,  this period  would be shortened  accordingly
beginning with the date of approval.

         Because the performance  adjustment will operate on a prospective basis
only,  neither  investment  results nor average  assets  from  periods  prior to
February,  1996  will  be  considered  in  the  initial  implementation  of  the
performance  based fee.  In  addition,  the Board  determined  that  performance
adjustments that would have the effect of increasing PMC's  compensation  should
be  made  only  on  the  basis  of  comparisons  of at  least  12  months.  As a
consequence,  no  performance  adjustment  increasing the Basic Fee will be made
until a 12 month performance  record,  starting in February,  1996, has accrued.
However,  the Board  believes  it would be  appropriate  to apply a  performance
adjustment  that would have the effect of lowering the Basic Fee after a 6 month
performance record, starting in February, 1996, has accrued.

         Accordingly,  starting with July,  1996, the Basic Fee will take effect
and will be adjusted for the relative  performance of the Fund and the record of


                                      -8-
<PAGE>

the Index from February 1, 1996 onward if such adjustment  would have the effect
of lowering the Basic Fee. The  application  of negative  adjustments  only will
continue through December 31, 1996.  Starting with January,  1997, the Basic Fee
will be adjusted to reflect both  increases and decreases  based upon the Fund's
performance relative to the Index from February 1, 1996 onward.

         The performance adjustment will be applied against assets over the same
period of performance and thereafter a new month will be added to the period for
purposes of measuring  performance and average assets until the period equals 36
months. After 36 months have elapsed from February, 1996, the performance period
will consist of the most recent month plus the previous 35 months.

         The following  chart  summarizes the transition to the proposed new fee
structure:

               *2/96 - 6/96 -           0.50% per annum on average net assets up
                                        to $250  million  0.48% per annum on the
                                        next $50 million in net assets 0.45% per
                                        annum  on  net  assets   exceeding  $300
                                        million

               7/96 - 12/96 -           0.625%  per annum  minus up to 0.20% per
                                        annum  based  on   performance  of  Fund
                                        relative to Index from 2/96

               1/97 and  thereafter -   0.625%  per  annum  plus or  minus up to
                                        0.20% per annum based on  performance of
                                        Fund  relative to Index from 2/96.  Each
                                        additional   month   is   added  to  the
                                        performance period up to 36 months after
                                        which the  period  will  consist  of the
                                        most recent  month plus the  previous 35
                                        months.

         *Or such later date as the  Proposed  Contract  may be  approved  at an
adjourned session of the meeting.

Effect of the New Management Fee Structure

         Under  the  Existing  Contract,  the Fund  pays  management  fees at an
effective annual rate of 0.46% based on net assets of  $1,011,224,843 at October
31, 1995. Under the Proposed Contract the Fund would pay a maximum annual fee of
0.825%  and a minimum  annual fee of 0.425%  based  upon the Fund's  performance
relative to the Index as described above.

         Set forth below is a chart showing the dollar amount of management fees
paid  during the Fund's past fiscal  year under the  Existing  Contract  and the


                                      -9-
<PAGE>

amount of fees that  would  have been paid under the  Proposed  Contract  at the
maximum,  base and  minimum  fee  rates.  The chart  also  shows the  percentage
differences  these amounts that would have been paid under the Proposed Contract
represent from the amount paid under the Existing Contract. Also set forth below
is a  comparative  fee table showing the amount of fees and expenses paid by the
Fund under the Existing  Contract as a percentage  of average net assets and the
amount of fees and expenses  shareholders  would have paid if the maximum,  base
and minimum fees under the Proposed Contract had been in effect.


                DOLLAR AMOUNT OF MANAGEMENT FEES PAID
               (fiscal year ended September 30, 1995)

                                   Existing       Proposed Contract
                                   Contract    Maximum  Base   Minimum
Amount of Fees Paid                $           $        $      $
 or that Would Have Been Paid

Percentage Difference                N/A        +   %    +   %   -  %
 from Amount Paid
 under Existing
 Contract


                        COMPARATIVE FEE TABLE

Annual Fund Operating Expenses
(as a percentage of average net assets)


                               Existing      Proposed Fee
                                 Fee    Maximum  Base   Minimum

Management Fee ......          [.46]     .825    .625    .425
12b-1 Fees ..........           .25      .25     .25     .25
Other Expenses ......          [.22]    [.22]   [.22]   [.22]
Total Fund Operating Expenses  [.86]   [1.23]  [1.03]   [.825]

Example

         The following illustrates the expenses on a $1,000 investment under the
existing and  proposed  maximum,  base and minimum  fees and the expense  stated
above,  assuming (1) a 5% annual  return and (2)  redemption  at the end of each
time period:

                                      -10-
<PAGE>

                  1 year   3 years   5 years   10 years
                 --------------------------------------

Existing Fee       $[66]    $[83]     $[102]    $[157]
Proposed Fee
 Maximum           $        $         $         $
 Base              $        $         $         $
 Minimum           $        $         $         $

         The  purpose of this  example and the table is to assist  investors  in
understanding the various costs and expenses of investing in shares of the Fund.
The example  above should not be considered a  representation  of past or future
expenses of the Fund.  Actual  expenses  may be higher or lower than those shown
above.

Differences in Certain Other Provisions Under Proposed Contract

         Standard of Care. The Existing Contract provides no express contractual
"standard  of  care"  applicable  to the  actions  of PMC.  Under  the  Proposed
Contract, PMC "will not be liable for any error of judgment or mistake of law or
for any loss sustained by reason of the adoption of any investment policy or the
purchase,  sale or retention of any security on the  recommendation of [PMC] . .
 ." PMC, however,  shall not be protected against liability by reason of its ". .
 . willful  misfeasance,  bad faith or gross negligence in the performance of its
duties or by reason of its  reckless  disregard  of its  obligations  and duties
under this  Agreement."  The proposed  "standard of care" is consistent with the
1940 Act,  PMC's most recent  management  contracts  and common  practice in the
mutual fund industry.

         PMC's Authority.  The Existing Contract  authorizes PMC to buy and sell
securities  on behalf  of the  Fund.  PMC must,  however,  promptly  notify  the
Trustees of each  purchase and sale  transaction  and, if any three (3) Trustees
disapprove such transaction  within forty-eight (48) hours, PMC shall cancel the
transaction  at the Fund's risk. The Proposed  Contract  provides that PMC shall
have full  discretion to act for the Fund in  connection  with purchase and sale
transactions  subject  only  to the  Declaration  of  Trust,  Bylaws,  currently
effective  registrations  under the 1940 Act and the  Securities Act of 1933, as
amended (the "1933 Act"),  investment  objectives,  policies and restrictions of
the Fund in effect from time to time,  and specific  policies  and  instructions
established  from time to time by the  Trustees.  Since the Fund's  inception in
1982,  the  Trustees  have never  requested  that PMC cancel a purchase  or sale
transaction on behalf of the Fund.

         Portfolio  Trading.  Under  the  Existing  Contract,  PMC must  conduct
purchase  and sale  transactions  on behalf  of the Fund at the "best  price and
execution   available."  This  provision  of  the  Existing  Contract  has  been
interpreted  to permit PMC to place  purchase  and sale orders with brokers from
whom PMC has obtained  supplemental  investment and market research and economic


                                      -11-
<PAGE>

analysis in accordance with the provisions of Section 28(e) of the Exchange Act,
even if it results in the Fund paying a commission to a broker  greater than the
amount another broker may charge.  Consistent with common practice in the mutual
fund  industry  and with PMC's most recent  management  contracts,  the Proposed
Contract  expressly permits PMC to engage in such activity.  For a more detailed
description  of the  Fund's  current  portfolio  brokerage  practices,  see  the
Appendix.

         Expense  Limitation.   The  Proposed  Contract  provides  that  if  the
operating expenses of the Fund exceed the limits established by state "blue sky"
administrators,  PMC's fee will be  reduced  (but not  below  $0) to the  extent
required by such limits.  The Proposed  Contract also provides that PMC may from
time to time agree not to impose all or a portion of its fee or  otherwise  take
action to  reduce  expenses  of the Fund.  Any such fee  limitation  or  expense
reduction is voluntary and may be  discontinued  or modified by PMC at any time.
The Existing Contract does not include comparable provisions.

         Expenses. The Existing Contract provides that the Fund shall pay, among
other things,  charges and expenses  associated  with  determining its net asset
value and  keeping  its books and  records.  These  expenses  have  historically
consisted  of the costs  incurred by PMC in  providing  accounting,  pricing and
appraisal services,  including costs associated with PMC personnel and equipment
employed  in  connection  with  providing  such  services.  PMC has  requested a
clarification  that the  expenses  for  which  the Fund  would  be  required  to
reimburse PMC be expanded to include  overhead  related to the provision of such
services,  as  would  be the case if the  Fund  contracted  with an  independent
provider of such services.  As a result, the Proposed Contract provides that the
Fund shall pay ". . . charges  and  expenses  for fund  accounting,  pricing and
appraisal services and related overhead,  including, to the extent such services
are  performed  by  personnel  of  [PMC] or its  affiliates,  office  space  and
facilities  and  personnel  compensation,  training and benefits . . .." PMC has
estimated  that,  at current  direct  labor  costs,  aggregate  annualized  fund
accounting overhead charges allocated to the Fund will be approximately $10,000.
In the absence of any voluntary  limit on expenses by PMC, the assumption by the
Fund of such  expenses  would have the effect of slightly  increasing  the gross
expenses and expense  ratio of the Fund.  PMC has informed the Board of Trustees
of the Fund that this change in the Proposed  Contract  will not have a material
effect on PMC's profitability. See "Factors Considered by the Trustees" below.

    Other  Differences.  The  Proposed  Contract  also  reflects  certain  other
substantive and stylistic  differences from the Existing Contract resulting from
an  effort  to  modernize  the  provisions  of  the  Proposed  Contract.   These
differences   include   provisions  that  provide  that:  (i)  the  law  of  The


                                      -12-
<PAGE>

Commonwealth of Massachusetts  shall be the governing law of the contract;  (ii)
PMC is an  independent  contractor  and not an employee  of the Fund;  (iii) the
contract is the entire agreement between the parties with respect to the matters
described therein; (iv) the contract may be executed using counterpart signature
pages; (v) invalid or unenforceable provisions of the contract are severable and
do not render the entire agreement invalid or  unenforceable;  (vi) the Fund may
pay for charges and expenses of counsel to the "non-interested" Trustees as well
as counsel to the Fund; and (vii) subject to obtaining best  execution,  PMC may
consider  sales of other  funds in the  Pioneer  Family  of  Mutual  Funds  when
selecting brokers and dealers to execute the Fund's securities transactions.

Miscellaneous

         If approved, the Proposed Contract will become effective on February 1,
1996 (or on the date of approval if approved  after that date) and will continue
in effect until May 31, 1997,  and  thereafter  will  continue from year to year
subject to annual  approval  by the Board of  Trustees in the same manner as the
Existing Contract.  The Proposed Contract  terminates if assigned (as defined in
the 1940 Act) and may terminate  without penalty,  upon sixty (60) days' written
notice,  by either  party by vote of its Board or by a vote of a majority of the
outstanding  voting  securities of the Fund. The  description of the differences
between the Existing  Contract and the Proposed Contract set forth above and the
other  information with respect to the Proposed  Contract are qualified in their
entirety by  reference  to the form of  Proposed  Contract,  attached  hereto as
Exhibit A.

Additional Information Pertaining to PMC

         For  additional  information   concerning  the  management,   ownership
structure, affiliations, brokerage policies and certain other matters pertaining
to PMC, see the Appendix.

Factors Considered by the Trustees

         The Trustees  determined  that the terms of the  Proposed  Contract are
fair and reasonable and that approval of the Proposed  Contract on behalf of the
Fund is in the best  interests of the Fund. In approving  the Proposed  Contract
and  recommending  its approval by the  shareholders  of the Fund, the Trustees,
including a majority of the  Trustees  who are not  "interested  persons" of the
Fund or PMC,  considered that the form of the Existing  Contract,  which is also
used by other mutual funds in the Pioneer  Family of Mutual Funds,  had not been
materially  revised in several years,  that similar  Proposals  would be made to
shareholders  of all mutual funds in the Pioneer Family of Mutual Funds at their
next shareholder  meeting,  that the material  changes in the Proposed  Contract


                                      -13-
<PAGE>

were  in  accordance  with  common  industry  practice,  and  that  overhead  on
accounting,  pricing and appraisal services would not be material to the Fund or
its shareholders or PMC's profitability.

         The Trustees considered a number of factors in deciding to recommend an
increase in the Basic Fee and a performance fee adjustment.  At all times during
the Trustees' deliberations, they were advised by the Fund counsel and their own
independent  counsel.  When the Trustees  were  presented  with the proposed fee
arrangements,  they requested and were furnished with substantial information to
assist  in their  evaluation.  In  considering  whether  to adopt  the  proposed
arrangement,  the Trustees considered,  among other things, information relating
to the overall  reasonableness  of both the Basic Fee and the fee  adjustment as
well the appropriateness of the performance measurement index.

         The Trustees'  determination  of the  appropriateness  of the Index was
based on a number of factors,  including the volatility and  diversification  of
the Fund's holdings, the types of securities expected to be owned in relation to
the securities  represented by the Index and the Fund's expected objective.  The
Trustees  determined that the Index represented a well-recognized,  broad-based,
market  value-weighted index that would likely correlate closely with the Fund's
holdings.  Furthermore,  this correlation was anticipated to be of a degree that
any  divergence  between the Fund's  performance  and that of the Index could be
attributed to PMC's skill in stock selection  within the parameters  established
by  the  Fund's  objectives  and  policies.  The  time  periods  to be  used  in
determining  any  performance  adjustment  were also judged to be of appropriate
length to ensure proper  correlation and to prevent fee  adjustments  from being
based on random or  insignificant  differences  between  the Fund and the Index.
Finally,  the Trustees  determined that both the Basic Fee and the amount of any
adjustments would be equitable and fair to the shareholders of the Fund.

Trustees' Recommendation

         Based  on its  evaluation  of the  extensive  materials  presented  and
assisted by the advice of independent counsel, the Board of Trustees,  including
all of the  Trustees  who  are  not  "interested  persons"  of the  Fund or PMC,
concluded that the proposed  Management  Contract was fair and reasonable and in
the best  interests of the Fund's  shareholders  and by a vote cast at a meeting
held on November 7, 1995,  unanimously  approved  and voted to  recommend to the
shareholders  of the Fund  that they  approve  the  Proposal  to  terminate  the
Existing Contract and to adopt the Proposed Contract.

                                      -14-
<PAGE>

Required Vote

           Adoption of Proposal 2 requires  the  affirmative  1940 Act  Majority
Vote of the Fund. If the Proposed  Contract is not approved by the  shareholders
of the Fund, the Existing Contract will continue in effect.

         FOR THE REASONS SET FORTH  ABOVE,  THE TRUSTEES  UNANIMOUSLY  RECOMMEND
THAT THE  SHAREHOLDERS OF THE FUND VOTE IN FAVOR OF THE APPROVAL OF THE PROPOSED
MANAGEMENT CONTRACT.


PROPOSAL 3.  APPROVAL OF AN AGREEMENT AND PLAN PROVIDING FOR THE
REORGANIZATION OF THE FUND FROM A MASSACHUSETTS
BUSINESS TRUST TO A DELAWARE BUSINESS TRUST.

General

         The Board of Trustees has unanimously approved, subject to the approval
of shareholders of the Fund, an Agreement and Plan of Reorganization  (the "Plan
of  Reorganization")  in the form attached to this Proxy Statement as Exhibit B.
The   Plan   of   Reorganization    provides   for   the   reorganization   (the
"Reorganization") of the Fund, a Massachusetts  business trust ("Current Fund"),
to  a  newly   established   Delaware   business  trust  which,   prior  to  the
reorganization,  will have no assets or  operations.  The form of Agreement  and
Declaration of Trust for the Delaware business trust (the "Delaware  Declaration
of Trust") is attached to this Proxy Statement as Exhibit C.

         The Reorganization  will entail creating a Delaware business trust (the
"Successor Fund").  Following the Reorganization,  the Successor Fund will carry
on the business of the Current Fund. If  shareholders  approve any or all of the
proposed changes in the Fund's investment objectives,  policies and restrictions
described in Proposal 1 and Proposals 5 through 18, the Fund's  operations  will
change  accordingly,  to the  extent  approved.  If none of  these  changes  are
approved,  the Successor  Fund will have an investment  objective,  policies and
restrictions  that are  identical  to the  investment  objective,  policies  and
restrictions  applicable to the Current Fund. The Successor Fund will also enter
into a management  contract and other service  agreements which provide the same
services  on the same terms as the  Proposed  Contract  (subject  to approval of
Proposal 2 by the Fund) and other service agreements currently applicable to the
Current Fund.  Shareholders  should be aware that there may be deemed to occur a
momentary  inconsistency  with  certain  of  the  Current  Fund's  policies  and
restrictions  (such  as  restrictions  on  investments  in any  one  issuer  and
investments  in other  investment  companies)  during  the  Reorganization.  The
principal  differences  between a Delaware  business  trust and a  Massachusetts
business trust as forms of  organization  are discussed  below under the caption


                                      -15-
<PAGE>

"Comparison  of Business  Trusts  under  Delaware  Law and  Massachusetts  Law."
Approval of the Reorganization  also constitutes  approval of the termination of
the  Current  Fund  in  accordance  with   Massachusetts   law.   Following  the
Reorganization,  PMC will serve as  investment  adviser for the  Successor  Fund
under a management contract identical to the Current Fund's Proposed Contract.

Reasons for the Proposed Reorganization

         The Current Fund is organized as a Massachusetts  business  trust.  The
proposed  form of  organization  as a Delaware  business  trust  offers  certain
advantages over the current form of  organization  as a  Massachusetts  business
trust.  The advantages  include the ability to offer multiple  classes of shares
and granting the Trustees  greater  power to amend the Delaware  Declaration  of
Trust  without  shareholder  approval,  although such  advantages  could also be
achieved under  Massachusetts law by amending the Current Fund's  Declaration of
Trust.  The  advantages  of the Delaware  Declaration  of Trust  compared to the
Current  Fund's  Declaration of Trust,  discussed in more detail below,  include
clearer  limitations  upon  liability of  shareholders  and trustees and greater
flexibility in methods of voting.

         The Fund's  structure as an investment  company with only one portfolio
of  investments  and a  single  class  of  securities  is  illustrative  of  one
difference between the Current Fund and the possible  structures  permitted by a
Delaware  business trust. The Fund's  Declaration of Trust currently permits the
Trust to issue multiple  series,  each consisting of a single class of shares of
beneficial  interest.  The Delaware  Declaration  of Trust would also permit the
Trustees to designate separate series of beneficial interest.  In addition,  the
Delaware  Declaration  of Trust would  specifically  authorize  the  Trustees to
designate  and issue an unlimited  number of classes of shares of each series of
the trust  ("Multiple  Class  System").  Under the Multiple  Class  System,  the
Successor  Fund could tailor its  marketing  and  distribution  activities  to a
broader  segment  of the  investing  public  which  may  ultimately  result in a
reduction of the operating expenses incurred by certain classes of shareholders.

Proposed Multiple Class System

         If Proposal 3 is approved by the  shareholders of the Fund, PMC intends
to recommend to the Board of Trustees of the  Successor  Fund that the Successor
Fund adopt the Multiple Class System.  Currently, PFD does not permit holders of
shares of other  funds in the  Pioneer  Family of Mutual  Funds sold  subject to
various contingent deferred sales charge arrangements ("CDSC") ("Class B shares"
and "Class C shares")  to  exchange  their  Class B shares or Class C shares for
shares of the Fund because the Fund is not able to impose a CDSC upon redemption
of its shares.  Without the ability to make an exchange privilege  available for


                                      -16-
<PAGE>

Class B  shareholders  of the other  Pioneer  Funds  offering  such shares,  the
Current  Fund is at a  competitive  disadvantage  relative to other mutual funds
which offer this  exchange  privilege.  Rather than  offering  only one class of
shares and organizing separate funds to employ alternative distribution methods,
the  Trustees  believe that  shareholders  and  investors  will benefit from the
Successor Fund's ability to make additional  distribution  channels and exchange
privileges available. The Trustees believe that establishing separate classes of
shares  of the  Successor  Fund  will  allow  the  Successor  Fund to  appeal to
investors and  shareholders  who prefer to invest in funds offering payment of a
CDSC rather than a front-end sales load. As of the date of this Proxy Statement,
the Trustees  intend to authorize  the  Successor  Fund to issue two  additional
classes  of  shares.  The  Trustees  reserve  the  right  to  issue  one or more
additional  classes of shares of the Fund at any time without  further notice to
the shareholders.

         Under the Multiple  Class System,  the shares of the Successor Fund and
any  subsequently  created  class of shares of the  Successor  Fund  would  each
represent  interests in the same series of shares and portfolio of  investments.
They would be  identical  in all  respects,  except that the  Trustees  would be
authorized to  differentiate  among the classes in the following  respects:  any
class (i) could be subject  to a  distribution  plan  under  Rule 12b-1  (each a
"Class  Distribution  Plan") and could make different  payments pursuant to that
Class  Distribution  Plan  (including  payments for any other costs  relating to
obtaining shareholder approval of a Class Distribution Plan for that class or an
amendment to that Class  Distribution  Plan);  (ii) would have exclusive  voting
rights with  respect to any Class  Distribution  Plan adopted  exclusively  with
respect to that class;  (iii) could bear certain  expenses  attributable  to the
shares of that class,  including  without  limitation  (a) transfer  agency fees
(including the incremental costs of monitoring a CDSC and/or conversion  feature
applicable  to a special  class of shares),  (b) printing  and postage  expenses
relating to preparing and  distributing  materials such as shareholder  reports,
newsletters,  prospectuses  and proxy  statements to current  shareholders  of a
specific class of shares, (c) SEC, state and foreign  registration fees incurred
by a specific class of shares, (d) the expenses of administrative  personnel and
services  required to support  the  shareholders  of a specific  class of shares
(including,  but not limited to,  maintaining  telephone  lines and personnel to
answer  shareholder's  inquiries about their  accounts,  the Successor Fund or a
particular  series),  (e)  litigation  or other  legal  expenses  relating  to a
specific class of shares, (f) Trustees' fees or expenses incurred as a result of
issues  relating  to a specific  class of shares,  and (g)  accounting  expenses
relating to a specific class of shares;  (iv) may be subject to different  sales
charges (including CDSCs), conversion and/or exchange arrangements;  and (v) may
bear its own name or designation.

                                      -17-
<PAGE>

         Implementation.  When the  Successor  Fund  adopts the  Multiple  Class
System,  existing  shares of the Fund will be  designated  as Class A shares and
will continue to be sold at net asset value plus the applicable sales charge and
subject to the Rule 12b-1  distribution  fee  pursuant to the Rule 12b-1 plan of
distribution (the "Class A Plan") approved by the Current Fund's shareholders on
November 1, 1991.  The  Successor  Fund,  will issue two  additional  classes of
shares of the Fund, Class B shares and Class C shares. It is expected that Class
B  shares  and  Class C  shares  will  be  offered  subject  to  different  CDSC
arrangements  and a Rule 12b-1  distribution  fee based on a  percentage  of the
Fund's  average net assets  attributable  to each class of shares  pursuant to a
separate Rule 12b-1 plan of distribution for each class.

Comparison of Business Trusts Under
Delaware Law and Massachusetts Law

         Delaware  law provides  that the  shareholders  of a Delaware  business
trust  shall not be subject to  liability  for the debts or  obligations  of the
trust. Under Massachusetts law,  shareholders of a Massachusetts  business trust
(such as Current Trust shareholders) may, under certain circumstances, be liable
for the debts and  obligations of that trust.  Although the risk of liability of
shareholders  of a  Massachusetts  business trust who do not  participate in the
management of the trust may be remote, the Board of Trustees has determined that
Delaware law affords greater protection against potential shareholder liability.
Similarly,  Delaware law provides  that, to the extent that a Delaware  business
trust issues multiple series of shares,  each series shall not be liable for the
debts or obligations of any other series,  another  potential,  although remote,
risk in the case of a Massachusetts  business trust.  While the Trustees believe
that a series of a Massachusetts  business trust will only be liable for its own
obligations, there is no direct statutory or judicial support for that position.

         Delaware law provides that, except to the extent otherwise  provided in
a trust's declaration of trust or bylaws, trustees will not be personally liable
to any person (other than the business  trust or a shareholder  thereof) for any
act,  omission or  obligation  of the  business  trust or any  trustee  thereof.
Delaware law also  provides that a trustee's  actions under a Delaware  business
trust's declaration of trust or bylaws will not subject the trustee to liability
to the business  trust or its  shareholders  if the trustee takes such action in
good faith  reliance on the  provisions of the business  trust's  declaration of
trust or bylaws. The declaration of trust of a Massachusetts  business trust may
limit the liability of a trustee, who is not also an officer of the corporation,
for breach of fiduciary duty except for, among other things, any act or omission
not in good faith which involves  intentional  misconduct or a knowing violation
of law or any transaction  from which such trustee derives an improper direct or


                                      -18-
<PAGE>

indirect  financial  benefit.  The  Trustees  believe that such  limitations  on
liability under Delaware law are consistent  with those  applicable to directors
of a corporation  under  Delaware law and will be  beneficial in attracting  and
retaining in the future qualified persons to act as trustees.

         Delaware law provides that a Delaware  business trust's  declaration of
trust or bylaws may set forth provisions  related to voting in any manner.  This
provision  appears to permit trustee and shareholder  voting through computer or
electronic  media.  For an  investment  company  with a  significant  number  of
institutional shareholders,  all with access to computer or electronic networks,
the  use of  such  voting  methods  could  significantly  reduce  the  costs  of
shareholder voting. However, the advantage of such methods may not be realizable
unless the SEC  modifies  its proxy  rules.  Also,  as required by the 1940 Act,
votes on certain  matters  by  trustees  would  still need to be taken at actual
in-person meetings.

         Delaware law explicitly  provides that separate  boards of trustees may
be authorized for each series of a Delaware  business  trust.  Whether  separate
boards of trustees  can be  authorized  for series of a  Massachusetts  business
trust is unclear under  Massachusetts  law. As always,  the establishment of any
board of trustees of a registered investment company must comply with applicable
securities laws,  including the provision of the 1940 Act regarding the election
of trustees by  shareholders.  Establishing  separate  boards of trustees would,
among  other  things,  enable  the  series of a  Delaware  business  trust to be
governed by  individuals  who are more  familiar  with such  series'  particular
operations.

Comparison of the Current Fund's Declaration of Trust
under Massachusetts law and the Delaware Declaration
of Trust under Delaware law

         It is  anticipated  that a Delaware  business trust will be required to
hold fewer shareholder meetings than a Massachusetts business trust, potentially
further  reducing  costs.  Although  neither  a  Delaware  business  trust nor a
Massachusetts  business trust is required to hold annual  shareholder  meetings,
Delaware law affords to the Trustees the ability to adapt the Delaware  business
trust to  future  contingencies  without  the  necessity  of  holding  a special
shareholder  meeting.  The  Trustees  may have the power to amend  the  business
trust's governing  instrument to create a class or series of beneficial interest
that  was not  previously  outstanding;  to  dissolve  the  business  trust;  to
incorporate the Delaware  business  trust; to merge or consolidate  with another
entity; to sell, lease, exchange,  transfer,  pledge or otherwise dispose of all
or any part of the  business  trust's  assets;  to cause any  series to become a
separate  trust;  and to change the Delaware  business  trust's  domicile  --all
without  shareholder  vote.  Any  exercise of  authority  by the Trustee will be


                                      -19-
<PAGE>

subject to  applicable  state and Federal  law.  The  flexibility  of a Delaware
business  trust  should help to assure that the Delaware  business  trust always
operates under the most  advantageous  form of  organization  and is intended to
reduce  the  expense  and   frequency   of  future   shareholder   meetings  for
non-investment-related operational issues.

Trustees' Recommendation

         After  considering the matters discussed above and other matters deemed
to be relevant,  the Trustees  determined that the  Reorganization (i) is in the
best  interest of the  Current  Fund and (ii) will not result in dilution of the
interest of the shareholders of the Current Fund. The Trustees unanimously voted
to  recommend  to the  shareholders  of the Current  Fund that they  approve the
Reorganization.

Required Vote

         Approval  of the  Agreement  and Plan of  Reorganization  requires  the
affirmative  1940 Act  Majority  Vote of the Current  Fund.  The  Trustees  have
determined  that the  Reorganization  will not proceed as described above unless
the  shareholders of the Current Fund approve the  Reorganization.  In the event
that  the  shareholders  of  the  Current  Fund  do not  vote  in  favor  of the
Reorganization,  the Trustees will  determine  what further  action,  if any, to
take, including the possibility of resubmitting the Proposal at a later time.

         THE  TRUSTEES  UNANIMOUSLY  RECOMMEND  THAT  SHAREHOLDERS  OF THE  FUND
APPROVE  THE   AGREEMENT   AND  PLAN  OF   REORGANIZATION   PROVIDING   FOR  THE
REORGANIZATIONS  OF EACH CURRENT FUND FROM A SERIES OF A MASSACHUSETTS  BUSINESS
TRUST TO A SERIES OF A DELAWARE BUSINESS TRUST.

Summary of the Plan of Reorganization

         The  following  discussion  summarizes  certain  terms  of the  Plan of
Reorganization.  The summary of the Plan of  Reorganization  is qualified in its
entirety  by the  provisions  of the  form of Plan of  Reorganization,  which is
attached  to  this  Proxy   Statement  as  Exhibit  B.   Assuming  the  Plan  of
Reorganization   is   approved,   it  is   currently   contemplated   that   the
Reorganizations  will  become  effective  at the close of  business  on or about
January 26, 1996.

         In order to accomplish the  Reorganization,  a Delaware  business trust
will be formed  corresponding  to the  Current  Fund  pursuant  to the  Delaware
Declaration  of  Trust  and  the  Successor  Fund.  On the  closing  date of the
Reorganization  (the "Closing Date"),  the Current Fund will transfer all of its
assets to the  Successor  Fund in exchange for the  assumption  by the Successor

                                      -20-
<PAGE>

Fund of all the liabilities of that Current Fund and the issuance to the Current
Fund of shares of beneficial  interest of the Successor  Fund  ("Successor  Fund
shares")  equal to the value (as determined by using the procedures set forth in
the  Current  Fund's  current  prospectus)  on the date of the  exchange  of the
Current Fund's net assets. The Current Fund as sole shareholder of the Successor
Fund, will then vote on certain matters that require  shareholder  approval,  as
described  below.  Immediately  thereafter,  the Current Fund will liquidate and
distribute  Successor Fund shares to each Current Fund  shareholder  pro rata in
proportion to the Current Fund shareholder's  beneficial interest in the Current
Fund  ("Current  Fund  shares") in exchange  for his or her Current Fund shares.
After this  distribution  of Successor  Fund shares,  each Current Fund will, as
soon  as  practicable  thereafter,  be  wound  up and  terminated.  Certificates
evidencing  full or  fractional  Successor  Fund  shares  will not be  mailed to
shareholders.   Upon  completion  of  the  Reorganization,   each  Current  Fund
shareholder will be the owner of full and fractional Successor Fund shares equal
in number and  aggregate net asset value to his or her Current Fund shares as of
the date of the exchange.

         As described above, the Plan of  Reorganization  authorizes the Current
Fund as the then sole shareholder of the Successor Fund (i) to elect as Trustees
of the Delaware  business  trust the persons who currently  serve as Trustees of
the  Massachusetts   business  trust;  (ii)  to  ratify  the  selection  of  the
independent  accountants;  (iii) to approve an investment advisory agreement for
the Successor Fund; and (iv) to approve the Rule 12b-1 plan of distribution  for
the Successor Fund.

         The newly  elected  Trustees  will hold  office  without  limit in time
except  that (i) any  Trustee  may  resign;  (ii) any  Trustee may be removed by
written  instrument  signed  by at least a  majority  of the  Trustees  prior to
removal;  and (iii) a Trustee  may be  removed  at any  special  meeting  of the
shareholders by a vote of two-thirds of the outstanding  shares of the Successor
Fund. In case a vacancy shall for any reason exist, the remaining  Trustees will
fill such vacancy by appointing  another Trustee so long as,  immediately  after
such  appointment,  at least  two-thirds  of the  Trustees  have been elected by
shareholders.

         If,  at any  time  prior  to the  Closing  of the  Reorganization,  the
Trustees determine that it would not be in the best interest of the Current Fund
or the shareholders to proceed with the execution of the Plan of Reorganization,
the  Reorganization  will not go forward,  notwithstanding  the  approval of the
Reorganization  by the  shareholders  at the  Meeting.  The  obligations  of the
Current Fund under the Plan of Reorganization  are subject to various conditions
as stated therein.  In order to provide against  unforeseen  events, the Plan of
Reorganization   may  be  terminated  or  amended  at  any  time  prior  to  the
Reorganizations  by mutual agreement of the Trustees of the Current Fund and the

                                      -21-
<PAGE>

Successor  Fund.  The Current Fund and the Successor  Fund may at any time waive
compliance with any of the covenants and conditions  contained in, or may amend,
the Plan of  Reorganization;  provided  that such waiver or  amendment  does not
materially adversely affect the interests of shareholders of the Current Fund.

Continuation of Shareholder Accounts and Services

         The Successor Fund's transfer agent,  PSC, will establish  accounts for
all  shareholders  of the Successor Fund  containing the  appropriate  number of
Successor  Fund  shares to be  received  by that  shareholder  under the Plan of
Reorganization.  Such accounts will be identical in all material respects to the
accounts  currently  maintained  by  the  Current  Fund  for  each  shareholder.
Shareholders who have elected to receive a particular service, such as telephone
redemptions or exchanges or Pioneer Investomatic Plans, will continue to receive
such services as a shareholder of the Successor Fund without any further action.

Expenses of the Reorganization

         The  Current   Fund  will  bear  its  expenses   associated   with  the
transactions  contemplated by the Plan of Reorganization.  In the event that the
Reorganizations is successfully completed,  such expenses will be assumed by the
Successor   Fund.   It  is  presently   estimated   that  the  expenses  of  the
Reorganization will be approximately $10,000.00.

Tax Consequences of the Reorganization

         It is a condition to the  consummation of the  Reorganization  that the
Fund  receives on or before the Closing Date an opinion from  counsel,  Hale and
Dorr,  substantially to the effect that, among other things,  for federal income
tax purposes the transactions  contemplated by the Plan of  Reorganization  will
constitute a reorganization under Section 368(a)(1) of the Internal Revenue Code
of 1986, as amended, and that, consequently,  no gain or loss will be recognized
for federal income tax purposes by the Current Fund or its shareholders upon (1)
the  transfer  of all of the  Current  Fund's  assets to the  Successor  Fund in
exchange  solely for Successor  Fund shares and the  assumption by the Successor
Fund of the Current Fund's  liabilities or (2) the  distribution  by the Current
Fund of the Successor  Fund shares,  in  liquidation of the Current Fund, to the
shareholders  in exchange for their shares of the Current Fund. The opinion will
further state,  among other things,  that (i) the federal tax basis of Successor
Fund shares to be received by  shareholders of the Current Fund will be the same
as the  federal  tax basis of the  shares of the  Current  Fund  surrendered  in
exchange therefor and (ii) each shareholder's federal tax holding period for his
or her Successor Fund shares will include such shareholder's  holding period for

                                      -22-
<PAGE>

the shares of the Current Fund surrendered in exchange  therefor,  provided that
such shares of the Current  Fund were held as capital  assets on the date of the
exchange.

Description of Certain Provisions
of the Delaware Declaration of Trust

         The  following  is a summary of  certain  provisions  of the  Successor
Trust's Delaware Declaration of Trust. This summary is qualified in its entirety
by reference to the form of Delaware  Declaration  of Trust  attached  hereto as
Exhibit C.

         Series and Classes.  As discussed  above,  the Delaware  Declaration of
Trust would permit the Successor Trust to issue series of its shares which would
represent  interests in separate  portfolios of investments.  No series would be
entitled  to share in the  assets  of any  other  series  or be  liable  for the
expenses  or  liabilities  of any  other  series.  Each  series  would  also  be
authorized to implement a Multiple Class System.

         Limitations  on  Derivative  Actions.  In addition to the  requirements
under  Delaware  law,  the  Delaware   Declaration  of  Trust  provides  that  a
shareholder of the Successor Fund may bring a derivative action on behalf of the
Successor  Fund  only if the  following  conditions  are met:  (a)  shareholders
eligible to bring such  derivative  action under  Delaware law who hold at least
10% of the outstanding  shares of the Successor Trust, or 10% of the outstanding
shares of the series or class of which such  action  relates,  shall join in the
request for the Trustees to commence  such action;  and (b) the Trustees must be
afforded a reasonable amount of time to consider such shareholder request and to
investigate  the basis of such claim.  The Trustees  shall be entitled to retain
counsel or other  advisers  in  considering  the merits of the request and shall
require an undertaking by the shareholders  making such request to reimburse the
Successor  Fund for the  expense  of any such  advisers  in the  event  that the
Trustees determine not to bring such action.

         Shareholder  Meetings  and Voting  Rights.  The  Successor  Fund is not
required to hold annual  meetings  of  shareholders  and does not intend to hold
such meetings.  In the event that a meeting of  shareholders is held, each share
of the Successor Fund shall be entitled to one vote on all matters  presented to
shareholders  including the election of Trustees.  Shareholders of the Successor
Fund do not have  cumulative  voting rights in  connection  with the election of
Trustees. Meetings of shareholders of the Successor Fund, or any series or class
thereof,  may be called by the  Trustees,  certain  officers or upon the written
request  of  holders  of 10% or  more  of the  shares  entitled  to vote at such
meeting.  The  shareholders  of the Successor  Fund shall only have the right to
vote with  respect to the limited  number of matters  specified  in the Delaware


                                      -23-
<PAGE>

Declaration of Trust and such other matters as the Trustees  shall  determine or
shall be required by law.

         Indemnification.   The  Delaware  Declaration  of  Trust  provides  for
indemnification of Trustees,  officers and agents of the Successor Fund provided
that no such indemnification  shall be provided to any person who is adjudicated
(i) to be liable by reason of willful  misfeasance,  bad faith, gross negligence
or reckless  disregard  of the duties  involved in the conduct of such  person's
office or (ii) not to have acted in good  faith in the  reasonable  belief  that
such person's actions were in the best interest of the Delaware business trust.

         The Delaware  Declaration of Trust provides that if any  shareholder or
former  shareholder  of any series  shall be held  personally  liable  solely by
reason of his being or having been a shareholder  and not because of his acts or
omissions or for some other reason,  the  shareholder or former  shareholder (or
his heirs,  executors,  administrators or other legal  representatives or in the
case of any entity, its general successor) shall be entitled,  out of the assets
belonging to the  applicable  series,  to be held harmless from and  indemnified
against all loss and expense arising from such liability. The Successor Fund, on
behalf of any affected series,  shall, upon request by such shareholder,  assume
the defense of any claim made against such shareholder for any act or obligation
of the series and satisfy any judgment thereon from the assets of the series.

         Termination. The Delaware Declaration of Trust would permit termination
of the Successor  Fund or of any series or class of the Successor  Fund (i) by a
majority of the shareholders at a meeting of shareholders of the Successor Fund,
series or class;  or (ii) by a  majority  of the  Trustees  without  shareholder
approval if the Trustees  determine  that such action is in the best interest of
the Trust or its shareholders. The factors and events that the Trustees may take
into  account in making  such  determination  include (i) the  inability  of the
Successor Fund, or any successor  series or class to maintain their assets at an
appropriate  size;  (ii)  changes  in  laws  or  regulations  governing  them or
affecting  assets  of  the  type  in  which  they  invest;   or  (iii)  economic
developments or trends having a significant  adverse impact on their business or
operations.  Termination of the Current Fund requires the approval of a majority
of the outstanding shares of the Fund.

         Merger, Consolidation, Sale of Assets, Etc. The Delaware Declaration of
Trust would authorize the Trustees without shareholder  approval to specifically
permit the Successor Fund, or any series thereof,  to merge or consolidate  with


                                      -24-
<PAGE>

any corporation,  association,  trust or other  organization or sell or exchange
all or substantially all of the property belonging to the Successor Fund, or any
series thereof.  A merger,  consolidation  or sale of assets of the Current Fund
requires an affirmative 1940 Act Majority Vote of the Fund.

         Amendments. The Delaware Declaration of Trust would permit the Trustees
to amend the Delaware  Declaration of Trust without a shareholder vote; provided
that  shareholders  of the  Successor  Fund  shall have the right to vote on any
amendment  (i) that would affect the voting  rights of  shareholders,  (ii) with
respect to which shareholder approval is required by law; (iii) that would amend
this  provision of the  Declaration  of Trust and (iv) with respect to any other
matter that the Trustees  determine to submit to shareholders.  Any amendment to
the Current  Declaration of Trust,  except an amendment changing the name of the
Fund or supplying  any omission,  curing any ambiguity or curing,  correcting or
supplementing  any defective or  inconsistent  provision of the  Declaration  of
Trust, requires the approval of the Current Fund's shareholders.

PROPOSAL 4.  ELECTION OF TRUSTEES

         The persons named on the accompanying  proxy card intend to vote at the
Meeting (unless  otherwise  directed) FOR the election of the eight (8) nominees
named below as  Trustees of the Fund.  All of the  nominees  currently  serve as
Trustees and have been  recommended by the Nominating  Committee of the Trustees
which consists solely of Trustees who are not "interested persons", of the Fund,
PMC or the Fund's principal underwriter, Pioneer Funds Distributor, Inc. ("PFD")
within the  meaning  of the  Investment  Company  Act of 1940,  as amended  (the
"Investment Company Act").

         Each  Trustee  will be elected to hold office until the next meeting of
shareholders  or  until  his or her  successor  is  elected  and  qualified.  In
addition,  if Proposal 3 regarding the  reorganization of the Fund as a Delaware
business trust is approved by shareholders, the election of Trustees of the Fund
shall also be deemed to constitute  election as Trustees of the Successor Trust.
Each  nominee has  consented  to being  named  herein and  indicated  his or her
willingness to serve if elected.  If any such nominee should be unable to serve,
an event not now  anticipated,  the  persons  named as proxies may vote for such
other person as shall be designated by the Board of Trustees.

         The  following  table sets forth each  nominee's  position(s)  with the
Fund,  age,  address,  principal  occupation or employment  during the past five
years and directorships,  and indicates the date on which he or she first became
a Director of the Fund.  The table also shows the number of shares of beneficial
interest of the Fund beneficially owned by each nominee, directly or indirectly,
on October 31, 1995.

                                      -25-
<PAGE>

<TABLE>
<CAPTION>


                                                                                            Stock of the Fund
    Name, Age,                                                                             Beneficially Owned
Position(s) with             Principal Occupation                      First             and Percentage of Total
    the Fund                    or Employment                         Became a             Shares Outstanding
  and Address                and Trusteeships(1)                      Trustee             on October 31, 1995(2)
- - ----------------             -------------------                     ---------           -----------------------

<S>                          <C>                                        <C>                     <C>        
John F. Cogan, Jr., 69*      President, Chief                           1982                   [14,591.687]
                             Executive Officer and a
Chairman of the Board,       Director of The Pioneer
  President and              Group, Inc., a public company
  Director                   ("PGI"); Chairman and a Director
60 State Street              of PMC, PFD, Pioneer Goldfields
Boston, MA  02109            Limited ("PGL") and Teberebie
                             Goldfields Limited; Director of
                             Pioneering Services Corporation
                             ("PSC") and Pioneer Capital
                             Corporation ("PCC"); President
                             and Director of Pioneer Plans
                             Corporation ("PPC"), Pioneer
                             Investment Corporation ("PIC"),
                             Pioneer Metals and Technology,
                             Inc. ("PMT") and Pioneer
                             International Corporation
                             ("P.Intl."); Chairman,
                             President and Director of
                             Pioneer Goldfields Limited
                             ("PGL"); Chairman of the
                             Supervisory Board of Pioneer
                             Fonds Marketing GmbH ("Pioneer
                             GmbH"); Member of the
                             Supervisory Board of Pioneer
                             First Polish Trust Fund Joint
                             Stock Company ("PFPT"); and
                             Chairman and Partner, Hale and
                             Dorr (Counsel to the Fund)

Richard H. Egdahl, M.D., 68  Professor of Management,                   1992                       -0-
Trustee                      Boston University School of
Boston University            Management; Professor of Public
  Health Policy              Health, Boston University School
  Institute                  of Public Health; Professor of
53 Bay State Road            Surgery, Boston University School
Boston, MA 02115             of Medicine: Director, Boston
                             University Health Policy
                             Institute and University
                             Medical Center; Executive Vice
                             President and Vice Chairman of
                             the Board, University Hospital;
                             Academic Vice President for
                             Health Affairs, Boston
                             University; Director, Essex


                            -26-
<PAGE>

                             Investment Management Company,
                             Inc., an investment adviser;
                             Health Payment Review, Inc., a
                             health care containment
                             software firm, Mediplex Group,
                             Inc., a nursing care facilities
                             firm, Peer Review Analysis,
                             Inc., a health care utilization
                             management firm, and
                             Springer-Verlag New York, Inc.,
                             a publisher; and Honorary
                             Director, Franciscan Children's
                             Hospital

Margaret B.W. Graham, 48     Founding Director, Winthrop,               1990                       -0-
Trustee                      Group, Inc., a consulting firm, since
The Keep                     1982; Manager of Research Operations,
P.O. Box 110                 Xerox Palo Alto Research Center, between
Little Deer Isle,            1991 and 1994; Professor of Operations
 ME 04650                    Management and Management of Technology,
                             Boston University School of Management,
                             between 1989 and 1993

John W. Kendrick, 78         Professor Emeritus of                      1982                       -0-
Trustee                      Economics, George Washington
6363 Waterway Dr.            University; and Economic
Falls Church,                Consultant and Director,
Virginia 22044               American Productivity and
                             Quality Center

Marguerite A. Piret, 47      President, Newbury, Piret &                1982                       -0-
Trustee                      Company, Inc., a merchant
One Boston Place             banking firm
Suite 2635
Boston, MA 02108

David D. Tripple, 51*        Director and Executive Vice                1986                   [1,731,637]
Executive Vice President     President of PGI; President,  
60 State Street              Chief Investment 
Boston,  MA 02109            Officer and a Director of PMC;
                             Director of PFD, PCC, Pioneer
                             SBIC Corp., P. Intl. and PIC;
                             and Member of the Supervisory
                             Board of PFPT

Stephen K. West, 67          Partner, Sullivan & Cromwell, a            1993                       -0-
Trustee                      law firm
125 Broad Street
New York, NY 10004

John Winthrop, 59            President, John Winthrop & Co.,            1985                   [1,217.614]
Trustee                      a private investment firm;
One North Adgers Wharf       Director of NUI Corp.;
Charleston, SC 29401         and Trustee of Alliance Capital
                             Reserve, Alliance Government


                            -27-
<PAGE>
                             Reserve and Alliance Tax
                             Exempt Reserve

</TABLE>

<PAGE>



- - ---------------


  * Messrs.  Cogan and Tripple are "interested persons" of the Fund, PMC and PFD
within the meaning of the Investment Company Act.

(1)  Each  nominee  also  serves  as a  trustee  for  each  of the  25  open-end
     investment  companies  (mutual funds) in the Pioneer Family of Mutual Funds
     and for each of the 8 portfolios of Pioneer  Variable  Annuity Trust and as
     Directors of Pioneer Interest Shares, Inc., a closed-end investment company
     ("Interest  Shares").  Except for Dr. Egdahl and Mr. West, each Trustee was
     elected by the  shareholders  of the Fund in 1990.  Dr. Egdahl and Mr. West
     were  elected  by  the  Trustees  in  August,   1992  and  October,   1993,
     respectively.

(2)  As of October 31, 1995, the Trustees and officers of the Fund  beneficially
     owned, directly or indirectly,  in the aggregate less than 1% of the Fund's
     outstanding shares.

         Ms. Piret,  Mr. West and Mr.  Winthrop serve on the Audit  Committee of
the Board of Trustees. The functions of the Audit Committee include recommending
independent  auditors to the  Trustees,  monitoring  the  independent  auditors'
performance,  reviewing  the results of audits and  responding  to certain other
matters  deemed  appropriate  by the  Trustees.  Ms.  Graham,  Ms. Piret and Mr.
Winthrop serve on the Nominating Committee of the Board of Trustees. The primary
responsibility  of the  Nominating  Committee is the selection and nomination of
candidates to serve as independent directors. The Nominating Committee will also
consider nominees recommended by shareholders to serve as Trustees provided that
shareholders submitting such recommendations comply with all relevant provisions
of Rule  14a-8  under the  Securities  Exchange  Act of 1934,  as  amended  (the
"Exchange Act").

         During the fiscal year ended  September 30, 1995, the Board of Trustees
held eleven meetings,  the Audit Committee held five meetings and the Nominating
Committee did not meet. All of the current  Trustees and Committee  Members then
serving  attended  at least  75% of the  meetings  of the Board of  Trustees  or
applicable  committee,  if any, held during the fiscal year ended  September 30,
1995.

Other Executive Officers

         In  addition  to  Messrs.  Cogan and  Tripple,  who serve as  executive
officers of the Fund, the following table provides  information  with respect to
the other executive  officers of the Fund. Each executive  officer is elected by
the Board of Trustees and serves until his  successor is chosen and qualified or
until his  resignation  or  removal by the Board.  The  business  address of all
officers of the Fund is 60 State Street, Boston, Massachusetts 02109.

                                      -28-
<PAGE>

   Name, Age and Position with The Fund             Principal Occupation(s)

   William H. Keough, 58, Treasurer          Senior Vice President, Chief
                                             Financial Officer and Treasurer of
                                             PGI and Treasurer of PFD, PMC, PSC,
                                             PPC, Pioneer SBIC Corp., PIC, PMT,
                                             P. Intl. and of each fund in the
                                             Pioneer Family of Mutual Funds.

   Joseph P. Barri, 49, Secretary            Secretary of PGI, PMC and PCC, and
                                             each fund in the Pioneer Family of
                                             Mutual Funds; Clerk of PFD and PSC
                                             and Partner, Hale and Dorr (counsel
                                             to the Fund).



Remuneration of Trustees and Officers

         The following  table provides  information  regarding the  compensation
paid by the Fund and the other  investment  companies  in the Pioneer  Family of
Mutual  Funds to the Trustees  for their  services for the Fund's most  recently
completed  fiscal  year.  Compensation  paid by the Fund to  Messrs.  Cogan  and
Tripple,  interested  persons of PMC, is reimbursed to the Fund by PMC. The Fund
pays no salary or other compensation to its officers.








                                      -29-
<PAGE>
<TABLE>
<CAPTION>




                                                                                              Total Compensa-
                                                                                              tion from the
                                                                     Pension or               Fund and other
                                           Aggregate                 Retirement                funds in the
                                         Compensation                 Benefits                Pioneer Family
Director                                From the Fund*                 Accrued               of Mutual Funds**


<S>                                        <C>                            <C>                     <C>
John F. Cogan, Jr.                             $0+                        $0                         $0+
Richard H. Egdahl, M.D.                    [4,500]                         0                      55,650
Margaret B.W. Graham                       [4,500]                         0                      55,650
John W. Kendrick                           [4,500]                         0                      55,650
Marguerite A. Piret                        [6,063]                         0                      66,650
David D. Tripple                                0+                         0                          0+
Stephen K. West                            [6,167]                         0                      63,650
John Winthrop                              [5,750]                         0                      63,650
                                           -------------------------------------------------------------

  Totals                                 [$31,480]                        $0                    $360,900
                                           ======                                                =======

</TABLE>



- - --------

+    PMC fully reimbursed the Fund and the other funds in the Pioneer Family of
     Mutual Funds for compensation paid to Messrs. Cogan and Tripple.

*    For the fiscal year ended September 30, 1995.

**   For the calendar year ended December 31, 1994.

Required Vote

         In  accordance  with the  Fund's  Declaration  of Trust,  the vote of a
plurality of all of the shares of the Fund voted at the Meeting is sufficient to
elect the nominees.

PROPOSALS 5 THROUGH 18. ELIMINATION, AMENDMENT OR ADDITION OF VARIOUS INVESTMENT
RESTRICTIONS

General

         The  Trustees  of the  Fund  unanimously  recommend  that  shareholders
approve  the  elimination,  amendment  or  addition  of  several  of the  Fund's
investment  restrictions,  as  described  in detail  below.  All of the  current
restrictions  proposed to be  eliminated  or amended are set forth in the Fund's
Statement of Additional  Information except for the repurchase  agreement policy
discussed under Proposal 5 which is contained in the Prospectus.

         Each Proposal requires the separate approval of the shareholders of the
Fund. Each of these restrictions,  except the industry concentration restriction
covered by  Proposal  18, is a  fundamental  investment  policy that may only be
changed by an  affirmative  1940 Act Majority  Vote. In the case of Proposal 18,


                                      -30-
<PAGE>

the proposed  change  requires an absolute  majority vote.  See "Required  Vote"
below.

PROPOSAL 5. AMENDMENT OF FUNDAMENTAL INVESTMENT RESTRICTION REGARDING REPURCHASE
AGREEMENTS. The Fund's current fundamental policy regarding repurchase
agreements states:



                    The Fund may enter into repurchase
               agreements with banks, generally not
               exceeding seven days.

      If amended as proposed, the new policy will state:

                    The Fund may enter into repurchase
               agreements with banks and broker-dealers,
               generally not exceeding seven days.

         The  amendment  is being  proposed  to  permit  the Fund to enter  into
repurchase  agreements with brokers as well as banks. This ability is consistent
with that of the other  Pioneer  funds  that  invest in  repurchase  agreements.
Repurchase  agreements  afford an  opportunity  for the Fund to earn a return on
temporarily  available cash at no market risk.  However,  such  transactions  do
involve credit risk. If the seller defaults on its obligation under a repurchase
agreement,  the Fund could realize a loss on the sale of the underlying security
or be subject to delays and  associated  expenses.  In order to protect  against
these risks, the Fund will enter into repurchase  agreements only with banks and
brokers that have been  reviewed and approved by the  Trustees.  PMC has advised
the  Trustees  that it believes  the brokers  with whom the Fund will enter into
repurchase  agreements  if the change is approved do not  generally  present any
greater credit risk than the current bank counterparties.


PROPOSAL 6.  AMENDMENT OF FUNDAMENTAL  INVESTMENT  RESTRICTION  REGARDING  SHORT
SALES. The Fund's existing fundamental  investment  restriction  regarding short
sales states that the Fund may not:

                    purchase securities "on margin" or
               effect "short sales" of securities.


         If amended as proposed, the restriction would provide that the Fund may
not:

                    purchase securities on "margin" or
               effect "short sales" of securities unless at
               all times when a short position is open it
               owns an equal amount of such securities or
               owns securities which, without payment of any

                            -31-

<PAGE>

               further consideration, are convertible into
               or exchangeable for securities of the same
               issue as, and at least equal in amount to,
               the securities sold short.



         A "short  sale"  is the sale of a  security  not  owned by the  seller,
usually to take advantage of an  anticipated  decline in the price or to protect
the profit in a long position.  This practice is prohibited by the blue sky laws
of  certain  states in which the Fund  offers its  shares  because  it  involves
elements of investment  leverage.  This  amendment is being  proposed to clarify
that the Fund may engage in short sales "against the box" (i.e.,  where the Fund
effectively covers the short position by portfolio holdings and, in essence,  is
not really selling  short) which are permitted by the applicable  blue sky laws.
Historically,  short sales against the box were used  primarily for tax planning
purposes  which are no longer  relevant.  The Fund  therefore does not expect to
engage significantly in this practice.


PROPOSAL 7. AMENDMENT TO FUNDAMENTAL INVESTMENT POLICY REGARDING UNDERWRITING.
The Fund's current investment policy regarding underwriting states that the Fund
may not:


                    underwrite any issue of securities.


         If amended  as  proposed,  the new policy  will state that the Fund may
not:


                    act as an underwriter, except as it may
               be deemed to be an underwriter in a sale of
               restricted securities held in its portfolio.

         The  Investment  Company  Act  Requires  that a  fund  state  a  formal
fundamental  policy regarding  underwriting.  The amendment is being proposed to
clarify  that the  sale by the Fund of  portfolio  securities  restricted  as to
transfer by the federal  securities laws will not be subject to this restriction
to the  extent  such a  sale  may be  deemed  to be  underwriting  activity.  As
discussed in detail in Proposal 10, PMC believes it is  advantageous  for a fund
with investment policies such as the Fund's to have the flexibility to invest in
restricted securities.  The proposed amendment would eliminate any doubt created
by the current  underwriting  restriction as to the Fund's ability to dispose of
any restricted securities it may acquire.


PROPOSAL  8.  ELIMINATION  OF  FUNDAMENTAL   INVESTMENT   RESTRICTION  REGARDING
INVESTMENT  COMPANIES.  The Fund's existing fundamental  investment  restriction
regarding  investment  companies and  investment  funds states that the Fund may
not:


                            -32-
<PAGE>



                    acquire the securities of any other
               domestic or foreign investment company or
               investment fund (except in connection with a
               plan of merger or consolidation with or
               acquisition of substantially all the assets
               of such other investment company); provided,
               however, that nothing herein contained shall
               prevent the Fund from investing in the
               securities issued by a real estate investment
               trust, provided that such trust shall not be
               permitted to invest in real estate or
               interests in real estate other than mortgages
               or other security interests.


         If   eliminated   as  proposed,   the   Trustees   would  adopt  a  new
non-fundamental restriction that would provide that the Fund may not:


                    invest in securities of other registered
               investment companies, except by purchases in
               the open market including only customary
               brokers' commissions, and except as they may
               be acquired as part of a merger, a
               consolidation or an acquisition of assets.


         This  change is being  proposed  to  provide  the Fund with  additional
investment  flexibility.  The  change  would  permit  investment  in  investment
vehicles  (except other mutual funds) that would be attractive  investments  for
the Fund but may  technically be (or be deemed to be ) investment  companies (as
defined in the Investment company Act) or investment funds (which has no precise
meaning but arguably  encompasses any pooled  investment  vehicle) and therefore
prohibited by the Fund's investment restriction.  Even though securities of such
issuers may involve the duplication of some fees and expenses, PMC believes that
they can  provide  attractive  investment  opportunities  that,  except  for the
restriction  stated  above,  would  be  consistent  with the  Fund's  investment
objectives and policies.  PMC does not currently expect to significantly  invest
the Fund's  assets in such vehicles but would like the  flexibility  to do so to
the  extent  permitted  by  the  Investment   Company  Act  should   appropriate
opportunities arise.


PROPOSAL  9.  ELIMINATION  OF  FUNDAMENTAL   INVESTMENT   RESTRICTION  REGARDING
SECURITIES  OF A SINGLE  ISSUER.  The  Fund's  existing  fundamental  investment
restriction  regarding  investment  in the  securities of a single issuer states
that the Fund may not:


                    purchase securities of a company if

                            -33-
<PAGE>

                    the purchase would result in the Fund's
               having more than 5% of the value of its total
               asset invested in securities of such company.


         The  Investment  Company  Act  limits  any  fund,  such  as  the  Fund,
subclassified  as a  "diversified"  company,  with  respect  to 75% of its total
assets, to investment of no more than 5% of the value of its total assets in the
securities  of any one issuer.  Although  the Fund must  declare its status as a
diversified  company in its  Prospectus  and comply with this and other  related
diversification  limitations,  there is no requirement  that such limitations be
formally stated as a matter of fundamental (or non-fundamental) policy.

         The change is being  proposed to provide the Fund with the  flexibility
to invest without  limitation up to 25% of its total assets in the securities of
a single  issuer (or issuers).  However,  given the large net assets of the Fund
and the relatively small  capitalizations  of most of the companies in which the
Fund invests, PMC does not expect that the change will have a significant impact
on the management of the Fund's portfolio.  In the event that the Fund does take
advantage of the flexibility to concentrate a higher percentage of its assets in
the securities of a small number of issuers, it will be affected  commensurately
by any fluctuations in value of such securities.

         Certain  state blue sky laws may limit the Fund's  ability to invest in
the  securities of a single issuer up to the amount  permitted by the Investment
Company Act. To the extent  required by a state  securities  administrator,  the
Fund may undertake to limit its investment to a lower percentage.

PROPOSAL 10. ELIMINATION OF FUNDAMENTAL  INVESTMENT RESTRICTION REGARDING VOTING
SECURITIES  OF A SINGLE  ISSUER.  The  Fund's  existing  fundamental  investment
restriction  regarding  investment  in the voting  securities of a single issuer
states that the Fund may not:

                    purchase securities of a company if the
               purchase would result in the Fund's owning
               more than 10% of the outstanding voting
               securities of such company.


         As a diversified  investment company, in addition to the limitations on
the  percentage of its assets that may be invested in the securities of a single
issuer,  with respect to 75% of its total assets,  the Fund may not acquire more
than 10% of the outstanding  voting securities of any one issuer. As in the case
of the  percentage  of assets  investment  restriction,  although  the Fund must


                            -34-
<PAGE>

comply with this limitation, there is no requirement that it be formally adopted
as a matter of  fundamental  (or  non-fundamental)  policy.  The change is being
proposed to provide the Fund with the flexibility to invest, with respect to 25%
of its total assets, in more than 10% of the outstanding  voting securities of a
single  issuer  (or  issuers).  Contrary  to the case of the  limitation  on the
percentage  of the Fund's  asset which may be invested in a single  issuer,  the
large  capitalization  of the Fund relative to many of the companies in which it
invests make it more likely that the Fund will take  advantage of the additional
flexibility afforded by the elimination of the current investment restriction.


         Certain  state blue sky laws may limit the Fund's  ability to invest in
the voting  securities of a single  issuer to a lesser amount than  permitted by
the  Investment  Company  Act.  To the  extent  required  by a state  securities
administrator,  the  Fund  may  undertake  to limit  its  investment  to a lower
percentage.

PROPOSAL  11.  AMENDMENT  OF  FUNDAMENTAL   INVESTMENT   RESTRICTION   REGARDING
COMMODITIES.  The Fund's existing fundamental  investment  restriction regarding
commodities states that the Fund may not:

                    invest in commodities, commodity
               contracts, or real estate.

         If amended as proposed, the restriction would provide that the Fund may
not:


                    invest in real estate, commodities or
               commodity contracts, except that the Fund may
               invest in financial futures contracts and
               related options and in any other financial
               instruments which may be deemed to be
               commodities or commodity contracts in which
               the Fund is not prohibited from investing by
               the Commodity Exchange Act and the rules and
               regulations thereunder.


         The  Investment  Company  Act  requires  that a  fund  state  a  formal
fundamental investment policy regarding investment in commodities. Any financial
futures contract or related option is considered to be a commodity.  Other types
of financial  instruments  such as forward  commitments  and swaps might also be
deemed to be commodities.  The amendment is being proposed to enable the Fund to
invest in financial  futures contracts and related options for hedging and other
permissible  purposes and to clarify  that  certain  practices in which the Fund
engages  (such as forward  foreign  currency  contracts)  or might in the future
engage  (such as swaps) are not subject to this  restriction.  The Fund does not
currently intend to engage in financial futures and related options transactions
or any other investment practice not currently  described in its Prospectus.  In


                            -35-
<PAGE>

the event that the Trustees decide in the future it is desirable for the Fund to
engage in any such practices, the Fund's Prospectus will be revised accordingly,
including the addition of appropriate risk disclosure.


PROPOSAL  12.  ELIMINATION  OF  FUNDAMENTAL   INVESTMENT  RESTRICTION  REGARDING
RESTRICTED  SECURITIES.  The Fund's existing fundamental  investment restriction
regarding restricted securities states that the Fund may not:

                    purchase "investment letter" securities
               (i.e., securities that must be registered
               under the Securities Act of 1933 before they
               may be offered or sold to the public).


         If   eliminated   as  proposed,   the   Trustees   would  adopt  a  new
non-fundamental restriction that would provide that the Fund may not:


                    purchase (a) securities which at the
               time of investment are not readily
               marketable, (b) securities the disposition of
               which is restricted under federal securities
               laws (excluding restricted securities that
               have been determined by the Trustees of the
               Fund (or the person designated by them to
               make such determinations) to be readily
               marketable) and (c) repurchase agreements
               maturing in more than seven days, if, as a
               result, more than 15% of the Fund's net
               assets would be invested in securities
               described in (a), (b) and (c) above.


         The SEC has long taken the position that an open-end investment company
should limit its investments in illiquid  securities because such securities may
present problems of accurate  valuation and because the investment company would
have  difficulty  satisfying  redemptions  within the  permitted  seven day time
period. In general,  illiquid securities have included restricted securities and
those  securities  for which  there is no readily  available  market.  Since the
adoption of the Fund's investment restriction,  the SEC has revised its position
to permit a fund to invest up to 15% of its net assets in illiquid securities.


         In recognition of the increased size and liquidity of the institutional
markets  for  unregistered   securities  and  the  importance  of  institutional
investors in providing capital to developing companies,  the SEC has also, since
the adoption of the Fund's investment  restriction,  adopted Rule 144A, which is


                            -36-
<PAGE>

designed  to  facilitate  efficient  trading  of  restricted   securities  among
institutional  investors.  The  SEC  has  specifically  stated  that  restricted
securities  traded  under Rule 144A may be treated  as liquid  for  purposes  of
investment  limitations  if the trustees of a fund determine that the securities
are liquid.  It is expected  that the Trustees of the Fund will  delegate to PMC
the daily  function of  determining  and  monitoring the liquidity of restricted
securities.

         The change is being  proposed to provide the Fund with the  flexibility
to take advantage of these regulatory  developments.  As securities markets have
evolved,   PMC  believes  that  the  Fund's  current   restriction   has  become
unnecessarily  restrictive.  The fact that a security may be restricted will not
necessarily  adversely affect either the liquidity or the accurate  valuation of
such investment.  The Fund might thereby be constrained  from making  attractive
investments  even  though  they could  satisfy  both  valuation  and  redemption
concerns.

         Certain state blue sky laws may limit the ability of the Fund to invest
in  restricted  securities,  including  restricted  securities  that are readily
marketable. To the extent required by a state securities administrator, the Fund
may undertake to limit its investment to a lower percentage.

PROPOSAL  13.  ELIMINATION  OF  FUNDAMENTAL   INVESTMENT  RESTRICTION  REGARDING
"UNSEASONED"  ISSUERS.  The Fund's existing fundamental  investment  restriction
regarding securities of "unseasoned" issuers states that the Fund may not:


                    purchase the securities of any
               enterprise which has a business history of
               less than three years, including the
               operation of any predecessor business to
               which it succeeded.

         The  Investment  Company  Act  does  not  impose  any  limitation  upon
investment in securities of issuers with a limited operating history. The change
is being proposed to permit the Fund to invest in such  securities to the extent
that PMC believes that such investment would be beneficial to the Fund and would
not involve undue risk. In general,  PMC believes that it would be  advantageous
for any  fund  that  concentrates  on  mid-capitalization  stocks  to  have  the
flexibility to invest in recently  formed  companies.  The risks of investing in
such   companies   are   similar  to  the   general   risks  of   investing   in
mid-capitalization  companies  discussed  above in Proposal 4. Although the Fund
will not formally adopt a percentage  limitation on such investments,  it is not
expected  that  PMC  will  invest  more  than 5% of the  Fund's  assets  in such
securities.

                            -37-
<PAGE>


         Certain state blue sky laws may limit the ability of the Fund to invest
in securities of unseasoned  issuers either alone or in combination with certain
other types of securities such as restricted securities.  To the extent required
by a state  securities  administrator,  the Fund  may  undertake  to  limit  its
investment to a specified percentage.

PROPOSAL  14.  ELIMINATION  OF  FUNDAMENTAL   INVESTMENT  RESTRICTION  REGARDING
AFFILIATES OF AFFILIATES. The Fund's existing fundamental investment restriction
regarding  securities  of  affiliates  of affiliates of the Fund states that the
Fund may not:

                    purchase or retain the securities of any
               company if those officers and Trustees of the
               Fund, or officers and directors of its
               adviser or principal underwriter, owning
               individually more than one-half of 1% of the
               securities of such company, together own more
               than 5% of the securities of such company
               which has a business history of less than
               three years, including the operation of any
               predecessor business to which it succeeded.


         If the elimination of this restriction is approved by shareholders, the
Trustees will adopt the identical  restriction as a non-fundamental  policy. The
restriction  is required by the blue sky laws of states in which the Fund offers
its shares but is not required to be stated as a matter of fundamental policy.


         The change is being  proposed to give the Trustees the  flexibility  to
amend the restriction if desired  without the need for  shareholder  approval in
the event of a change in the  applicable  blue sky laws or if the Fund ceases to
offer  shares in such  states.  There is no current  expectation  that either of
these  developments is likely to occur. In the event of such an occurrence,  PMC
will advise the Trustees whether it might be desirable to consider  changing the
restriction.

PROPOSAL 15. AMENDMENT OF FUNDAMENTAL  INVESTMENT  RESTRICTION  REGARDING LOANS.
The Fund's existing fundamental  investment  restriction  regarding making loans
states that the Fund may not:


                    make loans, provided that (i) the
               purchase of publicly distributed debt
               securities pursuant to the Fund's investment
               objectives shall not be deemed loans for the
               purposes of this restrictions; (ii) loans of
               portfolio securities, as described from time
               to time, under the heading "Lending of


                            -38-
<PAGE>

               Portfolio Securities" shall be made only in
               accordance with the terms and conditions
               therein set forth and (iii) in seeking a
               return on temporarily available cash the Fund
               may engage in repurchase transactions with
               banks maturing in seven days or less and
               involving obligations of the U.S. Government,
               its agencies or instrumentalities.


         If amended as proposed, the restriction would provide that the Fund may
not:

                    make loans, except by purchase of debt
               obligations in which the Fund may invest
               consistent with its investment policies, by
               entering into repurchase agreements or
               through the lending of portfolio securities,
               in each case only to the extent permitted by
               the Prospectus and this Statement of
               Additional Information.

         The  Investment  Company Act requires  that a Fund state a  fundamental
investment  policy regarding  making loans.  This amendment is being proposed to
clarify that the Fund may enter into repurchase agreements with brokers pursuant
to the proposed new repurchase  agreement  policy discussed in Proposal 5 and to
provide  future  flexibility  to adjust  the  Fund's  repurchase  agreement  and
securities lending practices without the need to further revise the restriction.


PROPOSAL  16.  AMENDMENT  OF  FUNDAMENTAL   INVESTMENT   RESTRICTION   REGARDING
BORROWING.  The Fund's existing  fundamental  investment  restriction  regarding
borrowing states that the Fund may not:

                    borrow money, except that, as a
               temporary measure for extraordinary or
               emergency purposes and not for investment
               purposes, the Fund may borrow from banks up
               to 5% of the value of its total assets at the
               time of the borrowing.


         If amended as proposed,  the restriction will provide that the Fund may
not:



                    borrow money, except from banks as a
               temporary measure to facilitate the meeting
               of redemption requests or for extraordinary
               or emergency purposes and except pursuant to
               reverse repurchase agreements or dollar
               rolls, in all cases in amount not exceeding


                            -39-
<PAGE>

               33 1/3% of the Fund's total assets (including
               the amount borrowed) taken at market value.
               The Fund will not use leverage to attempt to
               increase income. The Fund will not purchase
               securities while outstanding borrowings
               (including reverse repurchase agreements)
               exceed 10% of the Fund's total assets.


         The  Investment  Company Act requires  that a fund state a  fundamental
policy  regarding  borrowing.  The amendment is being  proposed (1) to raise the
percentage limit to the maximum permitted by the Investment  Company Act, (2) to
clarify that the Fund may borrow from banks both for  extraordinary or emergency
purposes and to meet  redemptions and (3) to give the Fund the future ability to
engage in reverse  repurchase  agreements  and dollar rolls without the need for
shareholder approval. The Proposal would also eliminate the requirement to value
the Fund's assets at the lower of cost or market.

         Reverse  repurchase  agreements  involve  sales by a fund of  portfolio
assets  concurrently with an agreement by the fund to repurchase the same assets
at a later  date at a fixed  price.  During  the  reverse  repurchase  agreement
period, the fund continues to receive principal and interest on these securities
and also has the opportunity to earn a return on the collateral furnished by the
counterparty to secure its obligation to redeliver the securities.  Dollar rolls
are  transactions  in which a fund sells  securities for delivery in the current
month  and  simultaneously  contracts  to  repurchase  similar  securities  on a
specified future date.  During the roll period,  the fund forgoes  principal and
interest  paid on the  securities.  The fund is  compensated  by the  difference
between the current  sales price and the forward  price for the future  purchase
(often  referred to as the "drop") as well as by the interest earned on the cash
proceeds of the initial sale.

         Although the change in percentage  limitation is significant,  there is
no current expectation that the Fund will engage in borrowing beyond its current
practices. In regard to the permitted uses of bank borrowings,  clarification is
necessary  because the current  restriction  is not explicit with respect to the
Fund's ability to borrow to meet  redemptions.  In regard to reverse  repurchase
agreements  and dollar rolls,  the Fund does not  currently  engage or desire to
engage in either of these investment  practices.  However,  because these common
practices may be deemed to  constitute  borrowings,  the Trustees  believe it is
best to create the  flexibility  to introduce such practices at some future time
without the need for  shareholder  approval if this becomes  desirable.  In such


                                      -40-
<PAGE>

event, the Prospectus and Statement of Additional  Information  would be amended
accordingly, including the addition of appropriate risk disclosure.

PROPOSAL 17. ADDITION OF FUNDAMENTAL  INVESTMENT  RESTRICTION  REGARDING "SENIOR
SECURITIES." The Trustees propose adopting a fundamental  investment restriction
regarding the issuance of "senior securities" such that the Fund may not:


                    issue senior securities, except as
               permitted by the Fund's borrowing, lending
               and commodity restrictions, and for purposes
               of this restriction, the issuance of shares
               of beneficial interest in multiple classes or
               series, the purchase or sale of options,
               futures contracts, options on futures
               contracts, forward commitments, forward
               foreign exchange contracts, repurchase
               agreements, reverse repurchase agreements,
               dollar rolls, swaps and any other financial
               transaction entered into pursuant to the
               Fund's investment policies as described in
               the Prospectus and this Statement of
               Additional Information and in accordance with
               applicable SEC pronouncements, as well as the
               pledge, mortgage or hypothecation of the
               Fund's assets within the meaning of the
               Fund's fundamental investment restriction
               regarding pledging, are not deemed to be
               senior securities.

         The  Investment  Company Act requires  that a fund state a  fundamental
policy  regarding the issuance of "senior  securities"  which are any securities
that have  preferential  rights  compared  to the  Fund's  shares of  beneficial
interest.  The Fund does not currently have such a policy. The above restriction
is being proposed for the purpose of complying with this technical  requirement.
The restriction is designed to clarify that the issuance of multiple  classes or
series of shares by the Fund  would be  permitted  and that  certain  investment
practices  in which the Fund  engages  or might in the  future  desire to engage
which could be deemed to be senior securities are not.

         Except for forward foreign currency contracts,  forward commitments and
repurchase agreements in which the Fund already engages, the Fund has no current
intention of engaging in the other listed  investment  practices.  However,  the
Trustees  believe it is appropriate to provide  clarification  at this time that
such practices (and other unspecified  investment  practices) are not covered by
the  restriction in case it becomes  desirable to engage in one or more of these
practices at some future time. In the event that a new practice is  implemented,


                            -41-
<PAGE>

the  Prospectus  and  Statement  of  Additional   Information  will  be  revised
accordingly, including the addition of appropriate risk disclosure.

PROPOSAL  18.   ELIMINATION  OF  INVESTMENT   RESTRICTION   REGARDING   INDUSTRY
CONCENTRATION.    The   Fund's   existing   investment   restriction   regarding
concentration of investments in particular industries states:

                    It is the policy of the Fund not to
               concentrate its investments in securities of
               companies in any particular industry. In the
               opinion of the staff of the SEC, investments
               are concentrated in a particular industry if
               such investments aggregate 25% or more of the
               Fund's total assets.

         This policy is designated as non-fundamental but may only be changed by
the  affirmative  vote  of a  majority  of  the  Fund's  outstanding  shares  of
beneficial  interest  (i.e.,  an  absolute  majority).  If this  restriction  is
eliminated as proposed,  the Fund will not adopt any new formal policy regarding
investment in a particular  industry.  However,  as discussed below, it would be
required  to adopt such a new  policy in the event that the Fund  desires in the
future to concentrate investment in any particular industry or industries.

         The  Investment   Company  Act  requires  that  any  Fund  desiring  to
concentrate  investment in a particular industry must adopt a formal fundamental
policy.  As  indicated by the Fund's  current  policy,  the SEC staff  generally
defines  concentration  to mean investing more than 25% of a fund's assets in an
industry and takes the  position  that a fund cannot  reserve  freedom of action
whether or not to concentrate except under defined  circumstances.  A fund, such
as the Fund,  which does not desire to reserve the ability to concentrate is not
required to state this as a formal  policy but would need to adopt such a policy
in order to do so.

         The change is being proposed to eliminate the absolute  majority voting
requirement imposed by the current restriction.  If approved,  the Fund would be
able to adopt an industry concentration policy at some future time by satisfying
the lesser  requirement  of an affirmative  1940 Act Majority vote.  There is no
current intention of proposing such a policy.

Trustees' Recommendations

         At a meeting of the  Trustees  held on August 10,  1995,  the  Trustees
unanimously  approved,  and voted to recommend to the  shareholders  of the Fund
that they approve the proposed modifications to certain of the Fund's investment
restrictions.  In taking  such  action  and  making  such  recommendations,  the


                            -42-
<PAGE>

Trustees  considered  the fact  that the  proposed  modifications  will  provide
clarification  relating to certain  investment  restrictions  and flexibility to
adjust to changing regulations and markets and new investment techniques without
continually incurring the significant expense involved in soliciting proxies and
holding shareholder  meetings.  The Trustees believe that this increased clarity
and flexibility will be beneficial to present  shareholders as well as potential
investors.

         Except as described in this Proxy  Statement,  approval of the proposed
changes  to the  investment  restrictions  will not  result  in  changes  in the
Trustees, officers,  investment programs and services or any operations that are
described  in  the  Fund's  current   Prospectus  and  Statement  of  Additional
information.

Required Vote

         Adoption of each of  Proposals 5 through 17  requires  the  affirmative
1940 Act  Majority  Vote of the Fund.  Adoption  of  Proposal  18  requires  the
affirmative  vote of a majority of the Fund's  outstanding  shares of beneficial
interest.

         If all or some of the Proposals are not approved by the shareholders of
the  Fund,  the  Fund  will  continue  to  adhere  to  the  current   investment
restriction(s) as to which no change has been approved.

         FOR THE REASONS SET FORTH  ABOVE,  THE TRUSTEES  UNANIMOUSLY  RECOMMEND
THAT THE SHAREHOLDERS OF THE FUND VOTE IN FAVOR OF THE APPROVAL OF THE PROPOSALS
TO ELIMINATE, AMEND OR ADD CERTAIN INVESTMENT RESTRICTIONS.

PROPOSAL 19.  RATIFICATION OF SELECTION OF INDEPENDENT PUBLIC ACCOUNTANTS

         The firm of Arthur  Andersen  LLP has served as the Fund's  independent
public accountant since the Fund's  inception.  Audit services during the fiscal
year ended September 30, 1995 consisted of examinations of the Fund's  financial
statements for this period and reviews of the Fund's filings with the SEC.

         The  Trustees,  including  all of the Trustees who are not  "interested
persons" of the Fund or PMC,  have  selected  Arthur  Andersen LLP as the Fund's
independent  public  accountants  for the fiscal year ended  September 30, 1996,
subject to shareholder  ratification at the Meeting.  A representative of Arthur
Andersen  LLP is expected to be  available at the Meeting to make a statement if
he or she desires to do so and to respond to appropriate questions.

                            -43-
<PAGE>

Required Vote

         The  ratification of the selection of Arthur Andersen LLP as the Fund's
independent  public  accountants  for the fiscal year ended  September  30, 1996
requires the  affirmative  vote of a majority of the shares present and entitled
to vote at the meeting.

         THE TRUSTEES UNANIMOUSLY  RECOMMENDED THAT THE SHAREHOLDERS OF THE FUND
VOTE  IN  FAVOR  OF THE  RATIFICATION  OF  ARTHUR  ANDERSEN  LLP  AS THE  FUND'S
INDEPENDENT PUBLIC ACCOUNTANTS FOR THE FISCAL YEAR ENDED SEPTEMBER 30, 1996.

OTHER MATTERS

Shareholder Proposals

         The Fund is not required to hold annual  meetings of  shareholders  and
does not currently intend to hold such a meeting of shareholders in 1997.

Shares Held in Retirement Plans

         The Fund is permitted to vote any shares held in  Retirement  Plans and
will do so if necessary to obtain a quorum.

Proxies, Quorum and Voting at the Meeting

         Any person  giving a proxy has the power to revoke it at any time prior
to its exercise by executing a  superseding  proxy or by  submitting a notice of
revocation to the Secretary of the Fund. In addition,  although mere  attendance
at the Meeting will not revoke a proxy, a shareholder present at the Meeting may
withdraw  his or her  proxy  and  vote in  person.  All  properly  executed  and
unrevoked  proxies  received in time for the Meeting will be voted in accordance
with the instructions  contained in the proxies. If no instruction is given, the
persons  named as proxies will vote the shares  represented  thereby in favor of
the  Proposals  described  above and will use their best  judgment in connection
with the  transaction  of such other  business as may  properly  come before the
Meeting or any adjournment thereof.

         A  majority  of the  shares  entitled  to vote --  present in person or
represented  by proxy --  constitutes a quorum for the  transaction  of business
with respect to any proposal (unless otherwise noted in the Proxy Statement). In
the  event  that at the time any  session  of the  Meeting  is called to order a
quorum is not present in person or by proxy,  the  persons  named as proxies may
vote those  proxies  which have been  received to adjourn the Meeting to a later
date. In the event that a quorum is present but sufficient votes in favor of any
of the  Proposals,  including  the  election  of the  nominees  to the  Board of
Trustees,  have not been received,  the persons named as proxies may propose one


                            -44-
<PAGE>

or more  adjournments  of the Meeting to permit further  solicitation of proxies
with respect to such Proposal. Any such adjournment will require the affirmative
vote of more  than one half of the  shares of the Fund  present  in person or by
proxy at the  session  of the  Meeting to be  adjourned.  The  persons  named as
proxies will vote those  proxies which they are entitled to vote in favor of any
such  Proposal  in favor of such an  adjournment  and will  vote  those  proxies
required to be voted against any such Proposal against any such  adjournment.  A
shareholder  vote  may be  taken on one or more of the  Proposals  in the  proxy
statement  prior to such  adjournment if sufficient  votes for its approval have
been  received and it is  otherwise  appropriate.  Such vote will be  considered
final  regardless  of whether  the  meeting is  adjourned  to permit  additional
solicitation with respect to any other Proposal.

         Shares of the Fund represented at the meeting (including,  shares which
abstain  or do not vote with  respect to one or more of the  Proposals)  will be
counted for purposes of determining  whether a quorum is present at the Meeting.
Abstentions  will be treated as shares that are present and entitled to vote for
purposes of  determining  the number of shares that are present and  entitled to
vote with respect to any particular Proposal,  but will not be counted as a vote
in favor of such Proposal.  Accordingly, an abstention from voting on a Proposal
has the same legal effect as a vote against the Proposal.

         Adoption by the  shareholders of any of Proposals 1, 2, 3 and 5 through
17 requires the affirmative  vote of the lesser of (i) 67% or more of the voting
securities  of the Fund present at the Meeting,  if the holders of more than 50%
of the shares of the Fund are present or represented by proxy at the Meeting, or
(ii) 50% or more of the outstanding shares of the Fund.  Adoption of Proposal 18
requires the affirmative vote of an absolute majority of the Fund's  outstanding
voting  securities.  If a broker or  nominee  holding  shares in  "street  name"
indicates on the proxy that it does not have discretionary  authority to vote as
to any Proposal,  those shares will not be considered as present and entitled to
vote as to that Proposal.  Accordingly, a "broker non-vote" has no effect on the
voting in determining  whether a Proposal has been adopted  pursuant to item (i)
above,  provided  that the  holders of more than 50% of the  outstanding  shares
(excluding  the "broker  non-votes")  of the Fund are present or  represented by
proxy.  However, with respect to determining whether a Proposal has been adopted
pursuant to item (ii) above,  because shares  represented by a "broker non-vote"
are considered outstanding shares, a "broker non-vote" has the same legal effect
as a vote against such Proposal.

                            -45-
<PAGE>

Other Business

         While the Meeting has been called to  transact  any  business  that may
properly  come before it, the only matters  that the Trustees  intend to present
are  those  matters  stated  in  the  attached  Notice  of  Special  Meeting  of
Shareholders.  However,  if any  additional  matters  properly  come  before the
Meeting,  and on all matters incidental to the conduct of the Meeting, it is the
intention  of the  persons  named in the  enclosed  proxy  to vote the  proxy in
accordance  with  their  judgment  on  such  matters  unless  instructed  to the
contrary.

Methods of Solicitation and Expenses

         The cost of preparing,  assembling and mailing this proxy statement and
the attached  Notice of Special  Meeting of  Shareholders  and the  accompanying
proxy card will be borne by the Fund. In addition to soliciting proxies by mail,
the Fund may, at its expense, have one or more of its officers,  representatives
or  compensated  third-party  agents,  including  PMC,  PSC and PFD,  aid in the
solicitation of proxies by personal interview or telephone and telegraph and may
request  brokerage  houses and other  custodians,  nominees and  fiduciaries  to
forward proxy soliciting material to the beneficial owners of the shares held of
record by such persons.

         The Fund may also  arrange to have votes  recorded  by  telephone.  The
telephone voting procedure is designed to authenticate shareholders' identities,
to allow shareholders to authorize the voting of their shares in accordance with
their  instructions  and to confirm that their  instructions  have been properly
recorded.  The Fund has been  advised  by  counsel  that  these  procedures  are
consistent with the  requirements  of applicable  law. If these  procedures were
subject to a successful legal challenge,  such votes would not be counted at the
meeting.  The Fund is unaware of any such  challenge at this time.  Shareholders
would be called at the phone  number PSC has in its records for their  accounts,
and  would be asked  for  their  Social  Security  number  or other  identifying
information.  The  shareholders  would then be given an opportunity to authorize
proxies  to  vote  their  shares  at  the  meeting  in  accordance   with  their
instructions.  To ensure that the shareholders'  instructions have been recorded
correctly,  they will also receive a confirmation  of their  instructions in the
mail.  A special  toll-fee  number  will be  available  in case the  information
contained in the confirmation is incorrect.

         Persons holding shares as nominees will be reimbursed by the Fund, upon
request,  for the  reasonable  expenses of mailing  soliciting  materials to the
principals of the accounts.

December 1, 1995


                                      -46-
<PAGE>


                                    APPENDIX


Additional Information Pertaining to PMC

         Directors.   Information  regarding  the  affiliations  of  Mr.  Cogan,
Chairman of PMC, and Mr. Tripple,  a Director of PMC, is contained in Proposal 4
of this Proxy Statement.  The following table provides  information with respect
to the other Director of PMC:


Name, Age and Address                       Principal Occupation(s)


Robert L. Butler, 54                        Executive Vice President and a
60 State Street                             Director of PGI; President and
Boston, MA 02109                            a Director of PFD; Director of
                                            PSC, PIC, and P. Intl.; Vice
                                            Chairman of Pioneer GmbH; and a
                                            Member of the Supervisory Board
                                            of PFPT.

        Ownership of PMC. PMC is a wholly-owned subsidiary of PGI. As of October
31,  1995,  Mr.  Cogan  beneficially  owned  [3,656,841]  shares  14.74%) of the
outstanding  Common  Stock of PGI.  Mr.  Cogan's  beneficial  holdings  included
[1,637,726]  shares held in trusts with respect to which Mr. Cogan may be deemed
to be a  beneficial  owner by reason of his  interest  as a  beneficiary  and/or
position as a trustee and shares which Mr. Cogan has the right to acquire  under
outstanding options within sixty days of October 31, 1995. At such date, Messrs.
Butler and Tripple, PMC's other directors,  each owned beneficially less than 2%
of the  outstanding  Common Stock of PGI. As of October 31,  1995,  officers and
directors of PMC and Trustees  and  officers of the Fund  beneficially  owned an
aggregate of [4,596,866] shares of Common Stock of PGI,  approximately  [20%] of
the outstanding Common Stock of PGI. During PGI's fiscal year ended December 31,
1994, there were no transactions in PGI Common Stock by any officer,  Trustee of
the  Fund or  Director  of PMC in an  amount  equal  to or  exceeding  1% of the
outstanding Common Stock of PGI.


        Services  Provided to the Fund By  Affiliates  of PMC. PSC serves as the
Fund's transfer agent and shareholder  servicing  agent.  Under the terms of its
contract with the Fund, PSC's duties include: (i) processing sales,  redemptions
and  exchanges of shares of the Fund;  (ii)  distributing  dividends and capital
gains associated with Fund portfolio  accounts;  and (iii)  maintaining  certain
account records and responding to routine shareholder  inquires.  For the fiscal
year ended September 30, 1995 the Fund paid PSC approximately $1,635,000 in fees
for these services.

        PFD, an indirect  wholly owned  subsidiary of PGI,  serves as the Fund's
principal  underwriter.  For the fiscal year ended  September 30, 1995, the Fund
paid PFD  approximately  $1,799,000 in distribution  fees pursuant to the Fund's


                                      -47-
<PAGE>

Distribution  Plan.  Such  fees are  paid to PFD in  reimbursement  of  expenses
related to servicing of shareholder accounts and compensating broker/dealers and
sales personnel. For the same period, PFD earned net underwriting commissions in
connection   with  its  offering  of  shares  of  the  Fund  in  the  amount  of
approximately  $1,409,000  of which  approximately  $1,224,000  was reallowed to
dealers.

        Similar  Funds Managed By PMC. PMC serves as the  investment  manager to
the following funds with investment objectives similar to the Fund's current and
proposed revised objectives:

                                   Name of Fund
       Annual                     (Net Assets as of
Management Fee Rate                as of 10/31/95)

0.50% on average                    Pioneer II
 net assets up to $250 million      ($          )
0.48% on the next
  $50 million in net assets
0.45% on net assets
 exceeding $300 million

0.65% on average                   Pioneer Capital
 net assets up to $300 million      Growth Fund
0.60% on the next                  ($            )
  $200 million in net assets
0.50% on the next                  Pioneer Equity-Income Fund
  $500 million in net assets       ($            )
0.45% on net assets
 exceeding $1 billion

        Portfolio Transactions. All orders for the purchase or sale of portfolio
securities  are  placed  on  behalf  of the Fund by PMC  pursuant  to  authority
contained in the Current and Proposed Management Contracts. In selecting brokers
or dealers,  PMC  considers  factors  relating to  execution on the best overall
terms  available,  including,  but not  limited  to,  the  size  and type of the
transaction;  the nature and  character  of the  markets of the  security  to be
purchased or sold; the execution efficiency, settlement capability and financial
condition  of  the  dealer;  the  dealer's  execution  services  rendered  on  a
continuing basis; and the reasonableness of any dealer spreads.

        PMC may select  broker-dealers  which provide  brokerage and/or research
services to the Fund and/or other  investment  companies or accounts  managed by
PMC. Such research services must be lawful and appropriate  assistance to PMC in
the  performance of its investment  decision making  responsibilities  and could
include advice concerning the value of securities; the advisability of investing
in,  purchasing or selling  securities;  the  availability  of securities or the
purchasers or sellers of securities;  furnishing analysis and reports concerning


                                      -48-
<PAGE>

issuers, industries, securities, economic factors and trends, portfolio strategy
and  performance  of  accounts;   and  effecting  securities   transactions  and
performing functions  incidental thereto (such as clearance and settlement).  In
addition, if PMC determines in good faith that the amount of commissions charged
by a broker is reasonable in relation to the value of the brokerage and research
services provided by such broker, the Fund may pay commissions to such broker in
an amount  greater  than the amount  another firm may charge.  This  information
might be useful  to PMC in  providing  services  to the Fund as well as to other
investment  companies  or  accounts  managed  by PMC,  although  not all of such
research may be useful to the Fund. Conversely, such information provided to PMC
by brokers  and  dealers  through  whom other  clients of PMC effect  securities
transactions  might be  useful to PMC in  providing  services  to the Fund.  The
receipt of such  research is not  expected to reduce  PMC's  normal  independent
research  activities;  however,  it enables PMC to avoid the additional  expense
which might  otherwise  be incurred if it were to attempt to develop  comparable
information through its own staff.

                      -------------------------------------




                                    EXHIBIT A
                               MANAGEMENT CONTRACT

THIS  AGREEMENT  dated this 1st day of February,  1996 between  Pioneer  Mid-Cap
Growth Fund (formerly  Pioneer Three), a Delaware  business trust (the "Trust"),
and Pioneering Management Corporation, a Delaware corporation (the "Manager").

                               W I T N E S S E T H

WHEREAS,  the  Trust  is  registered  as an  open-end,  diversified,  management
investment  company  under the  Investment  Company Act of 1940, as amended (the
"1940 Act"),  and has filed with the  Securities  and Exchange  Commission  (the
"Commission") a registration  statement (the  "Registration  Statement") for the
purpose of registering  its shares for public  offering under the Securities Act
of 1933, as amended (the "1933 Act"),

WHEREAS,  the  parties  hereto deem it  mutually  advantageous  that the Manager
should be engaged,  subject to the  supervision of the Trust's Board of Trustees
and officers, to manage the Trust.

NOW, THEREFORE,  in consideration of the mutual covenants and benefits set forth
herein, the Trust and the Manager do hereby agree as follows:

         1. (a) The Manager  will  regularly  provide the Trust with  investment
research,  advice and  supervision  and will furnish  continuously an investment
program for the Trust, consistent with the investment objectives and policies of
the Trust. The Manager will determine from time to time what securities shall be
purchased for the Trust,  what securities shall be held or sold by the Trust and
what portion of the Trust's  assets shall be held  uninvested  as cash,  subject
always to the  provisions  of the Trust's  Certificate  of Trust,  Agreement and
Declaration of Trust, By-Laws and its registration statements under the 1940 Act
and under the 1933 Act covering the Trust's shares, as filed with the Securities
and  Exchange  Commission,  and  to  the  investment  objectives,  policies  and
restrictions  of the  Trust,  as each of the same  shall be from time to time in
effect, and subject,  further, to such policies and instructions as the Board of
Trustees  of the  Trust  may from  time to time  establish.  To  carry  out such
determinations,  the Manager will exercise full discretion and act for the Trust
in the same manner and with the same force and effect as the Trust  itself might
or could do with respect to purchases,  sales or other transactions,  as well as
with respect to all other things  necessary or incidental to the  furtherance or
conduct of such purchases, sales or other transactions.
<PAGE>

            (b) The  Manager  will,  to the extent  reasonably  required  in the
conduct of the  business of the Trust and upon the Trust's  request,  furnish to
the Trust  research,  statistical  and  advisory  reports  upon the  industries,
businesses,  corporations or securities as to which such requests shall be made,
whether  or not  the  Trust  shall  at the  time  have  any  investment  in such
industries,  businesses,  corporations  or securities.  The Manager will use its
best efforts in the preparation of such reports and will endeavor to consult the
persons and sources believed by it to have information available with respect to
such industries, businesses, corporations or entities.

            (c) The Manager will  maintain all books and records with respect to
the Trust's securities  transactions required by sub-paragraphs (b)(5), (6), (9)
and (10) and  paragraph  (f) of Rule 31a-1  under the 1940 Act (other than those
records being  maintained by the  custodian or transfer  agent  appointed by the
Trust) and  preserve  such records for the periods  prescribed  therefor by Rule
31a-2 under the 1940 Act. The Manager will also provide to the Board of Trustees
such periodic and special reports as the Board may reasonably request.

         2. (a) Except as otherwise  provided  herein,  the Manager,  at its own
expense,  shall  furnish to the Trust office space in the offices of the Manager
or in such  other  place  as may be  agreed  upon  from  time to  time,  and all
necessary  office  facilities,  equipment and personnel for managing the Trust's
affairs and investments, and shall arrange, if desired by the Trust, for members
of the Manager's organization to serve as officers or agents of the Trust.

            (b) The Manager  shall pay directly or reimburse  the Trust for: (i)
the  compensation  (if  any)  of  the  Trustees  who  are  affiliated  with,  or
"interested  persons"  (as  defined  in the 1940 Act) of,  the  Manager  and all
officers  of  the  Trust  as  such;  and  (ii)  all  expenses  not   hereinafter
specifically  assumed  by the Trust  where such  expenses  are  incurred  by the
Manager or by the Trust in connection with the management of the affairs of, and
the investment and reinvestment of the assets of, the Trust.

            (c) The Trust shall  assume and shall pay:  (i) charges and expenses
for fund  accounting,  pricing and  appraisal  services  and  related  overhead,
including,  to the extent  such  services  are  performed  by  personnel  of the
Manager,   or  its  affiliates,   office  space  and  facilities  and  personnel
compensation,  training and benefits; (ii) the charges and expenses of auditors;
(iii) the charges and expenses of any  custodian,  transfer  agent,  plan agent,
dividend  disbursing agent and registrar  appointed by the Trust with respect to
the Trust;  (iv) issue and transfer taxes  chargeable to the Trust in connection


                                      -2-
<PAGE>

with  securities  transactions  to which  the  Trust is a party;  (v)  insurance
premiums,  interest charges,  dues and fees for membership in trade associations
and all taxes and corporate fees payable by the Trust to federal, state or other
governmental  agencies;  (vi) fees and  expenses  involved  in  registering  and
maintaining  registrations  of the Trust and/or its shares with the  Commission,
state or blue sky  securities  agencies  and foreign  countries,  including  the
preparation of Prospectuses and Statements of Additional  Information for filing
with the Commission;  (vii) all expenses of shareholders' and Trustees' meetings
and  of  preparing,  printing  and  distributing  prospectuses,  notices,  proxy
statements and all reports to shareholders and to governmental agencies;  (viii)
charges and expenses of legal  counsel to the Trust and the  Trustees;  (ix) any
distribution fees paid by the Trust in accordance with Rule 12b-1 promulgated by
the Commission  pursuant to the 1940 Act; (x)  compensation of those Trustees of
the Trust who are not affiliated with or interested persons of the Manager,  the
Trust  (other than as  Trustees),  The  Pioneer  Group,  Inc. or Pioneer  Trusts
Distributor,  Inc.; (xi) the cost of preparing and printing share  certificates;
and (xii) interest on borrowed money, if any.

            (d) In addition to the expenses described in Section 2(c) above, the
Trust shall pay all  brokers' and  underwriting  commissions  chargeable  to the
Trust in connection with securities transactions to which the Trust is a party.

         3. (a) The Trust  shall pay to the  Manager,  as  compensation  for the
Manager's  services and expenses  assumed  hereunder,  a fee as set forth below.
Management  fees payable  hereunder  shall be computed daily and paid monthly in
arrears.


                (i) For the period  beginning on the date this Contract  becomes
effective and ending on June 30, 1996,  the fee shall be paid at the annual rate
of 0.50% of the Trust's  average daily net assets up to $250  million,  0.48% of
the next $50 million,  and 0.45% of the excess over $300 million (the "Carryover
Fee").

                (ii) For periods after June 30, 1996, the fee payable  hereunder
shall be composed of the Basic Fee (defined below) and a Performance  Adjustment
(defined  below) to the Basic Fee based upon the  investment  performance of the
Trust in relation to the Standard & Poors Mid-Cap 400 Index (the "Index").

                (iii) The Basic Fee is  payable  at an annual  rate of 0.625% of
the Trust's average daily net assets.

                (iv) The Performance Adjustment consists of an adjustment to the
monthly  Basic Fee to be made by applying a performance  adjustment  rate to the
average  net  assets of the Trust over the  performance  period.  The  resulting


                                      -3-
<PAGE>

dollar  figure will be added to or  subtracted  from the Basic Fee  depending on
whether the Trust experienced better or worse performance than the Index.


         The Performance  Adjustment rate is 0.02% per annum for each percentage
point rounded to the nearer point (the higher point if exactly  one-half  point)
that the Trust's investment  performance for the period was better or worse than
the record of the index as then constituted.  The maximum performance adjustment
is 0.20% per annum.


         The  performance  period will commence on February 1, 1996.  During the
first five months  thereafter  there will be no  Performance  Adjustment and the
Carryover  Fee will be in  effect.  Starting  with July,  1996 and  ending  with
December,  1997 (the "Transition Period"),  the Performance Adjustment will take
effect  only if this would have the effect of lowering  the Basic Fee.  Starting
with January,  1997, the  Performance  Fee will take effect for purposes of both
raising and lowering the Basic Fee.


         Starting with July,  1996, a new month will be added to the performance
period each month until the performance period equals 36 months. Thereafter, the
performance  period will  consist of the  current  month plus the  preceding  35
months.


         The Trust's  investment  performance  will be measured by comparing the
(i) opening net asset value of one share of the Trust on the first  business day
of the performance period with (ii) the closing net asset value of the one share
of the  Trust as of the last  business  day of such  period.  In  computing  the
investment  performance  of the Trust and the  investment  record of the  Index,
distributions  of realized  capital gains,  the value of capital gains taxes per
share  paid  or  payable  on  undistributed  realized  long-term  capital  gains
accumulated  to the end of such  period  and  dividends  paid out of  investment
income on the part of the Trust,  and all cash  distributions  of the  companies
whose stock comprise the Index, will be treated as reinvested in accordance with
Rule 205-1 or any other  applicable  rule under the  Investment  Advisers Act of
1940, as the same from time to time may be amended.

         The computation of the  performance  adjustment will not be cumulative.
Except during the Transition  Period,  a positive fee adjustment will apply even
though the  performance  of the Trust over some period of time  shorter than the
performance  period  has been  behind  that of the  Index,  and,  conversely,  a
negative fee adjustment  will apply for the month even though the performance of
the Trust over some period of time shorter than the performance  period has been
ahead of that of the Index.

                                      -4-
<PAGE>


                (v) One-twelth of the annual  Performance  Adjustment rate shall
be applied to the average of the net assets of the Trust (computed in the manner
set forth in the  Declaration of Trust of the Trust adjusted as provided  above,
if  applicable)  determined  as of the close of  business on each  business  day
through out the performance  period.  The resulting dollar amount is added to or
deducted from the Basic Fee.


                (vi)  In  the  event  of  termination  of  this  Agreement,  the
Carryover  Fee or Basic Fee then in effect shall be computed on the basis of the
period  ending on the last  business  day on which this  Agreement  is in effect
subject  to a pro rata  adjustment  based on the  number of days  elapsed in the
current  month as a percentage  of the total  number of days in such month.  The
amount of any  Performance  Adjustment  to the Basic Fee will be computed on the
basis of and applied to net assets  averaged  over the 36 month period ending on
the last  business day on which this  Agreement is in effect,  provided  that if
this Agreement has been in effect less than 36 months,  the computation  will be
made on the basis of the period of time during which it has been in effect.

            (b) If the  operating  expenses  of the Trust in any year exceed the
limits set by state  securities laws or regulations in states in which shares of
the Trust are sold, the amount payable to the Manager under subsection (a) above
will  be  reduced  (but  not  below  $0),  and  the  Manager  shall  make  other
arrangements  concerning  expenses  but,  in each  instance,  only as and to the
extent  required  by such laws or  regulations.  If amounts  have  already  been
advanced  to the Manager  under this  Agreement,  the  Manager  will return such
amounts to the Trust to the extent required by the preceding sentence.

            (c) In addition to the foregoing,  the Manager may from time to time
agree not to impose all or a portion of its fee otherwise  payable hereunder (in
advance of the time such fee or a portion thereof would otherwise accrue) and/or
undertake to pay or reimburse the Trust for all or a portion of its expenses not
otherwise  required  to be  borne or  reimbursed  by the  Manager.  Any such fee
reduction or undertaking  may be  discontinued or modified by the Manager at any
time.

         4.  It  is  understood   that  the  Manager  may  employ  one  or  more
sub-investment  advisers (each a "Subadviser")  to provide  investment  advisory
services  to the  Trust by  entering  into a  written  agreement  with each such
Subadviser;  provided,  that any such  agreement  first shall be approved by the
vote of a majority of the Trustees, including a majority of the Trustees who are
not "interested  persons" (as defined in the 1940 Act) of the Trust, the Manager
or any such  Subadviser,  at a meeting of  Trustees  called  for the  purpose of
voting  on such  approval  and by the  affirmative  vote of a  "majority  of the


                                      -5-
<PAGE>

outstanding  voting  securities" (as defined in the 1940 Act) of the Trust.  The
authority  given to the Manager in Sections 1 through 6 hereof may be  delegated
by it under any such agreement;  provided,  that any Subadviser shall be subject
to the same restrictions and limitations on investments and brokerage discretion
as the Manager.  The Trust agrees that the Manager shall not be  accountable  to
the Trust or the Trust's  shareholders for any loss or other liability  relating
to  specific  investments  directed by any  Subadviser,  even though the Manager
retains  the  right to  reverse  any such  investment,  because,  in the event a
Subadviser is retained,  the Trust and the Manager will rely almost  exclusively
on the expertise of such Subadviser for the selection and monitoring of specific
investments.

         5. The Manager  will not be liable for any error of judgment or mistake
of law or for any loss  sustained  by reason of the  adoption of any  investment
policy or the purchase, sale, or retention of any security on the recommendation
of the Manager,  whether or not such  recommendation  shall have been based upon
its own  investigation  and research or upon  investigation and research made by
any other individual, firm or corporation,  but nothing contained herein will be
construed  to protect the  Manager  against  any  liability  to the Trust or its
shareholders by reason of willful misfeasance,  bad faith or gross negligence in
the  performance  of its duties or by reason of its  reckless  disregard  of its
obligations and duties under this Agreement.

         6. (a) Nothing in this  Agreement will in any way limit or restrict the
Manager or any of its officers,  Trustees, or employees from buying,  selling or
trading in any securities for its or their own accounts or other  accounts.  The
Manager  may  act  as an  investment  advisor  to  any  other  person,  firm  or
corporation,  and may perform  management  and any other  services for any other
person, association,  corporation, firm or other entity pursuant to any contract
or  otherwise,  and take any action or do any thing in  connection  therewith or
related  thereto;  and no such  performance  of management or other  services or
taking of any such  action  or doing of any such  thing  shall be in any  manner
restricted  or  otherwise  affected  by any  aspect of any  relationship  of the
Manager  to or with the Trust or deemed to  violate  or give rise to any duty or
obligation  of the Manager to the Trust except as otherwise  imposed by law. The
Trust  recognizes that the Manager,  in effecting  transactions  for its various
accounts,  may not always be able to take or liquidate  investment  positions in
the same security at the same time and at the same price.

            (b) In  connection  with  purchases or sales of  securities  for the
account of the Trust,  neither the Manager nor any of its Trustees,  officers or
employees will act as a principal or agent or receive any  commission  except as


                                      -6-
<PAGE>

permitted  by the 1940 Act.  The  Manager  shall  arrange for the placing of all
orders for the  purchase  and sale of  securities  for the Trust's  account with
brokers or dealers selected by the Manager.  In the selection of such brokers or
dealers and the placing of such orders,  the Manager is directed at all times to
seek for the Trust the most favorable  execution and net price available  except
as described  herein.  It is also  understood that it is desirable for the Trust
that the Manager have access to supplemental  investment and market research and
security and  economic  analyses  provided by brokers who may execute  brokerage
transactions  at a higher  cost to the Trust  than may  result  when  allocating
brokerage to other brokers on the basis of seeking the most favorable  price and
efficient  execution.  Therefore,  the Manager is authorized to place orders for
the purchase and sale of securities for the Trust with such brokers,  subject to
review by the Trust's  Trustees from time to time with respect to the extent and
continuation of this practice.  It is understood  that the services  provided by
such  brokers  may be  useful  to the  Manager  in  connection  with  its or its
affiliates' services to other clients.

            (c) On  occasions  when the Manager  deems the purchase or sale of a
security to be in the best interest of the Trust as well as other  clients,  the
Manager,  to the  extent  permitted  by  applicable  laws and  regulations,  may
aggregate  the  securities  to be sold or  purchased in order to obtain the best
execution and lower brokerage commissions,  if any. In such event, allocation of
the  securities  so purchased or sold,  as well as the expenses  incurred in the
transaction,  will be made by the Manager in the manner it  considers  to be the
most equitable and consistent with its fiduciary obligations to the Trust and to
such clients.

         7. This Agreement  shall become  effective on the date hereof and shall
remain in force until , 1997 and from year to year thereafter,  but only so long
as its  continuance is approved  annually by a vote of the Trustees of the Trust
voting in person,  including a majority of its  Trustees  who are not parties to
this Agreement or "interested  persons" (as defined in the 1940 Act) of any such
parties,  at a meeting  of  Trustees  called  for the  purpose of voting on such
approval or by a vote of a "majority of the outstanding  voting  securities" (as
defined in the 1940 Act) of the Trust, subject to the right of the Trust and the
Manager to terminate this contract as provided in Section 8 hereof.

         8. Either party hereto may, without  penalty,  terminate this Agreement
by vote of its Board of Trustees or Directors, as the case may be, or by vote of
a "majority of its outstanding  voting  securities" (as defined in the 1940 Act)
and the giving of 60 days' written notice to the other party.

                                      -7-
<PAGE>

         9. This  Agreement  shall  automatically  terminate in the event of its
assignment. For purposes of this Agreement, the term "assignment" shall have the
meaning given it by Section 2(a)(4) of the 1940 Act.

         10. The Trust agrees that in the event that neither the Manager nor any
of its affiliates  acts as an investment  adviser to the Trust,  the name of the
Trust  will be  changed  to one that  does not  contain  the name  "Pioneer"  or
otherwise suggest an affiliation with the Manager.

         11. The Manager is an independent contractor and not an employee of the
Trust for any purpose.  If any occasion  should arise in which the Manager gives
any advice to its clients  concerning the shares of the Trust,  the Manager will
act solely as  investment  counsel for such clients and not in any way on behalf
of the Trust or any series thereof.

         12. This Agreement  states the entire  agreement of the parties hereto,
and is intended to be the complete and exclusive  statement of the terms hereof.
It may not be added to or changed  orally,  and may not be modified or rescinded
except by a writing signed by the parties hereto and in accordance with the 1940
Act, when applicable.

         13. This Agreement and all  performance  hereunder shall be governed by
and construed in accordance with the laws of The Commonwealth of Massachusetts.

         14.Any  term or  provision  of  this  Agreement  which  is  invalid  or
unenforceable in any jurisdiction  shall, as to such jurisdiction be ineffective
to the extent of such invalidity or  unenforceability  without rendering invalid
or  unenforceable  the  remaining  terms  or  provisions  of this  Agreement  or
affecting  the validity or  enforceability  of any of the terms or provisions of
this Agreement in any other jurisdiction.

         15.This  Agreement  may be  executed  simultaneously  in  two  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.



                                      -8-
<PAGE>




IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed
by their duly authorized  officers and their seal to be hereto affixed as of the
day and year first above written.


<PAGE>







ATTEST:                                   PIONEER MID-CAP
                                          GROWTH FUND



                                          By:
Joseph P. Barri                              John F. Cogan, Jr.
Secretary                                    Chairman and President


ATTEST:                                   PIONEERING MANAGEMENT CORPORATION



                                          By:
Joseph P. Barri                              David D. Tripple
Secretary                                    President




                                    EXHIBIT B
                      AGREEMENT AND PLAN OF REORGANIZATION


         THIS  AGREEMENT  AND  PLAN OF  REORGANIZATION  is made as of the day of
January, 1996, by and between Pioneer Three, a Massachusetts business trust (the
"Current  Fund"),  and Pioneer Mid-Cap Growth Fund, a business trust duly formed
under the laws of the State of Delaware (the "Successor Trust").

         This  Agreement  is  intended  to  be  and  is  adopted  as a  plan  of
reorganization  within the  meaning of Section  368 (a)(1) of the U.S.  Internal
Revenue  Code of 1986,  as amended (the  "Code"),  and is intended to effect the
reorganization  (a  "reorganization")  of the Current  Fund,  as a new  separate
series of the Successor Trust. The  reorganization  will involve the transfer of
all of the assets of the Current Fund to the sole series of the Successor  Trust
(the  "Successor  Fund") solely in exchange for (1)  assumption by the Successor
Fund of all  liabilities  of the Current  Fund and (2) the issuance of shares of
beneficial interest (the "Successor Shares") by the Successor Trust on behalf of
the Successor Fund to the Current Fund, followed by the pro rata distribution on
the Closing Date (as defined  below) of the  Successor  Shares to the holders of
shares  of   beneficial   interest  of  the  Current  Fund  (the  "Current  Fund
Shareholders")  in exchange for their shares of the Current Fund in  liquidation
and  termination  of the  Current  Fund,  all  upon  the  terms  and  conditions
hereinafter set forth in this Agreement.

         In  consideration  of the premises and of the covenants and  agreements
hereinafter set forth the parties hereto covenant and agree as follows.

1.       TRANSFER OF ASSETS OF THE CURRENT  FUND IN EXCHANGE FOR  ASSUMPTION  OF
         LIABILITIES  AND ISSUANCE OF SUCCESSOR  SHARES OF THE SUCCESSOR  TRUST;
         TERMINATION OF THE CURRENT FUND

         1.1  Subject to the terms and  conditions  set forth  herein and on the
basis of the representations  and warranties  contained herein, the Current Fund
agrees  to  transfer  all of the  assets  of the  Current  Fund as set  forth in
paragraph  1.2 and assign and transfer all of its  liabilities  to the Successor
Fund of the Successor Trust which has been established solely for the purpose of
acquiring all of the assets and assuming all of the  liabilities  of the Current
Fund. The Successor Trust has not issued any Shares or commenced operations. The
Successor  Trust on behalf of the Successor Fund agrees that in exchange for all
of the assets of the Current Fund (1) the Successor Fund shall assume all of the
liabilities of the Current Fund, whether contingent or otherwise, then existing,
and further (2) the Successor Trust shall deliver to the Current Fund the number
of full and fractional  Successor Shares equal to the value of the assets of the
Current Fund  transferred to the Successor  Fund,  minus the  liabilities of the

                                       B-1

<PAGE>

Current Fund assumed by the Successor Fund (the "Net  Assets"),  as described in
paragraph  3.1  on  the  Closing  Date  provided  for  in  paragraph  3.1.  Such
transactions shall take place at the Closing provided for in paragraph 3.1.

         1.2 The assets of the Current Fund to be acquired by the Successor Fund
shall include,  without  limitation,  all cash,  cash  equivalents,  securities,
receivables (including interest and dividends receivable),  any claims or rights
of action or rights to register  shares under  applicable  securities  laws, any
books or records of the  Current  Fund and other  property  owned by the Current
Fund and any  deferred or prepaid  expenses  shown as assets on the books of the
Current Fund on the Closing Date provided for in paragraph 3.1.

         1.3 Immediately upon delivery to the Current Fund of Successor  Shares,
any duly authorized officer of the Current Fund shall cause the Current Fund, as
the then sole shareholder of the Successor Fund, to (i) elect as Trustees of the
Successor Trust the persons who currently serve as Trustees of the Current Fund;
(ii) ratify the  selection  of the  independent  accountants;  (iii)  approve an
investment  advisory  agreement  for the  Successor  Fund in the form  currently
approved by the shareholders of the Current Fund; (iv) approve a Rule 12b-1 plan
in the form  currently in place with respect to the Current Fund; and (v) adopt,
on behalf of the Successor Fund, the investment objectives,  investment policies
and investment restrictions of the Current Fund.

         1.4 As provided in paragraph  3.4, on the Closing Date the Current Fund
will  distribute in liquidation  the Successor  Shares pro rata in proportion to
the Current Fund's respective shares of beneficial  interest in the Current Fund
("Current Fund Shares") to Current Fund  Shareholders of record determined as of
the close of business  on the Closing  Date,  in exchange  for the Current  Fund
Shares.  Such distribution will be accomplished by the transfer of the Successor
Shares then  credited to the account of the Current Fund on the share records of
the  Successor  Trust to open  accounts  on those  records  in the  names of the
Current Fund Shareholders and representing the respective pro rata number of the
Successor  Shares  received from the Successor  Trust on behalf of the Successor
Fund due the Current  Fund  Shareholders.  The  Successor  Trust shall not issue
certificates representing Successor Shares in connection with such distribution.
Fractional  Successor  Shares  shall be  rounded  to the third  place  after the
decimal point.

         1.5 As soon as  practicable  after the  distribution  of the  Successor
Shares as set forth in Section 1.4, the Current Fund shall be terminated and any
such further  actions shall be taken in connection  therewith as are required by
applicable law.

         1.6  Ownership  of  the  Successor   Shares  of  each   Successor  Fund
Shareholder shall be maintained  separately on the books of Pioneering  Services


                                      B-2
<PAGE>

Corporation as the Successor Trust's shareholder services and transfer agent.

         1.7 Any transfer  taxes payable upon issuance of Successor  Shares in a
name other than the registered holder of the Current Fund Shares on the books of
the  Current  Fund as of that  time  shall be paid by the  person  to whom  such
Successor Shares are to be distributed as a condition of such transfer.

2.       VALUATION

         2.1 The value of the  Current  Fund's Net Assets to be  acquired by the
Successor Trust on behalf of the Successor Fund hereunder shall be the net asset
value  computed  as of  the  valuation  time  provided  in  the  Current  Fund's
prospectus on the Closing Date using the valuation  procedures  set forth in the
Current Fund's current prospectus or statement of additional information.

         2.2 The value of full and fractional  Successor  Shares to be issued in
exchange  for the Current  Fund's Net Assets  shall be equal to the value of the
Net  Assets of the  Current  Fund on the  Closing  Date,  and the number of such
Successor  Shares  shall equal the number of full and  fractional  Current  Fund
Shares of the Current Fund on the Closing Date.

         2.3 All computations of value shall be made by Brown Brothers  Harriman
& Co. as custodian for the Current Fund and the Successor Trust.

3.       CLOSING AND CLOSING DATE

         3.1 The  transfer of the  Current  Fund's  assets in  exchange  for the
assumption  by the  Successor  Fund of the Current  Fund's  liabilities  and the
issuance of Successor Shares to the Current Fund, as described  above,  together
with related acts necessary to consummate such acts (the "Closing"), shall occur
at the offices of Hale and Dorr at 60 State Street, Boston,  Massachusetts 02109
on January __, 1996 ("Closing Date"), or at such other place or date on or prior
to March 31, 1996 as the parties may agree in writing.  All acts taking place at
the Closing  shall be deemed to take place  simultaneously  as of the last daily
determination  of the net asset value of any Current  Fund or at such other time
and/or place as the parties may agree.

         3.2 In the  event  that on the  Closing  Date  (a) the New  York  Stock
Exchange is closed to trading or trading thereon is restricted or (b) trading or
reporting  of  trading  on said  Exchange  or in any  market in which  portfolio
securities  of any  Current  Fund  are  traded  is  disrupted  so that  accurate
appraisal  of  the  value  of the  total  net  assets  of the  Current  Fund  is
impracticable,  the Closing shall be postponed until the first business day upon


                                      B-3
<PAGE>

which  trading  shall  have been fully  resumed  and  reporting  shall have been
restored.

         3.3 The  Current  Fund shall  deliver at the Closing a  certificate  or
separate  certificates of an authorized officer stating that it has notified the
Custodian,   as  custodian  for  the  Current   Fund,  of  the  Current   Fund's
reorganization as the Successor Fund.

         3.4  Pioneering  Services  Corporation,  as  shareholder  services  and
transfer agent for the Current Fund,  shall deliver at the Closing a certificate
as to the  conversion  on its books and records of the Current Fund  Shareholder
account to an account as a holder of Successor Shares. The Successor Trust shall
issue and deliver to the Current Fund a  confirmation  evidencing  the Successor
Shares to be credited on the Closing Date or provide  evidence  satisfactory  to
the Current Fund that such  Successor  Shares have been  credited to the Current
Fund's  account on the books of the Successor  Trust.  At the Closing each party
shall  deliver  to the other  such  bills of sale,  checks,  assignments,  stock
certificates, receipts or other documents as such other party or its counsel may
reasonably request.

         3.5 Portfolio  securities  that are not held in book-entry  form in the
name of the  Custodian as record  holder for the Current Fund shall be presented
by the Current Fund to the Custodian for examination no later than five business
days  preceding the Closing  Date.  Portfolio  securities  which are not held in
book-entry  form shall be delivered by the Current Fund to the Custodian for the
account of the Successor Fund on the Closing Date,  duly endorsed in proper form
for  transfer,  in such  condition as to  constitute  good  delivery  thereof in
accordance with the custom of brokers, and shall be accompanied by all necessary
federal and state stock transfer stamps or a check for the appropriate  purchase
price  thereof.  Portfolio  securities  held  of  record  by  the  Custodian  in
book-entry  form on  behalf  of the  Current  Fund  shall  be  delivered  to the
Successor  Fund  by the  Custodian  by  recording  the  transfer  of  beneficial
ownership  thereof on its records.  The cash  delivered  shall be in the form of
currency or by the Custodian  crediting the Successor  Fund' account  maintained
with the Custodian with immediately available funds.

4.       REPRESENTATIONS AND WARRANTIES

         4.1 The Current Fund represents and warrants as follows:

             4.1.A. The Current Fund is a business trust duly organized, validly
existing  and  in  good  standing  under  the  laws  of  The   Commonwealth   of
Massachusetts  and has the power to own all of its  properties  and assets  and,
subject to approval by the  shareholders  of the  Current  Fund,  to perform its
obligations under this Agreement. The Current Fund is not required to qualify to


                                      B-4
<PAGE>

do business in any jurisdiction in which it is not so qualified or where failure
to qualify  would not subject it to any material  liability or  disability.  The
Current Fund has all necessary  federal,  state and local  authorizations to own
all of its  properties  and  assets  and to carry on its  business  as now being
conducted;

             4.1.B.  The  Current  Fund  is  a  registered   investment  company
classified  as a management  company of the open-end  type and its  registration
with the Securities and Exchange  Commission (the "Commission") as an investment
company under the  Investment  Company Act of 1940, as amended (the "1940 Act"),
is in full force and effect;

             4.1.C.  The Current  Fund is not, and the  execution,  delivery and
performance of this Agreement will not result,  in violation of any provision of
its Declaration of Trust or By-laws,  or any agreement,  indenture,  instrument,
contract,  lease or other undertaking to which the Current Fund is a party or by
which the Current Fund is bound;

             4.1.D.  The  Current  Fund  has  no  material  contracts  or  other
commitments (other than this Agreement or agreements on behalf of a Current Fund
for the purchase of securities  entered into in the ordinary  course of business
and  consistent  with its  obligations  under this  Agreement)  that will not be
terminated  without  liability  to the  Current  Fund on or prior to the Closing
Date;

             4.1.E.  No material  litigation  or  administrative  proceeding  or
investigation  of or before any court or governmental  body presently is pending
or threatened  against the Current Fund or any of its properties or assets.  The
Current Fund knows of no facts that might form the basis for the  institution of
such  proceedings  and the  Current  Fund is not a party to, or subject  to, the
provisions of any order,  decree or judgment of any court or  governmental  body
that materially and adversely  affects its business or its ability to consummate
the transactions herein contemplated;

             4.1.F.  At the date hereof and at the Closing  Date,  all  federal,
state and other tax returns and reports, including information returns and payee
statements,  of the Current Fund required by law to have been filed or furnished
by such dates  shall have been filed or  furnished  and all  federal,  state and
other  taxes,  interest  and  penalties  shall  have  been paid so far as due or
provision  shall have been made for the  payment  thereof  and no such return is
currently under audit and no assessment has been asserted with respect to any of
such returns or reports;

             4.1.G.  The  Current  Fund has elected to be treated as a regulated
investment  company  under  Subchapter M of the Code,  has qualified as such for


                                      B-5
<PAGE>

each  taxable  year  since its  inception,  and will  qualify  as such as of the
Closing Date;

             4.1.H.  The  authorized  capital of the Current Fund consists of an
unlimited  number of shares of beneficial  interest.  All issued and outstanding
shares of  beneficial  interest of the Current Fund are, and at the Closing Date
will be, duly and validly issued and outstanding,  fully paid and nonassessable.
The Current Fund does not have outstanding any options, warrants or other rights
to subscribe  for or purchase any of its shares of beneficial  interest,  nor is
there outstanding any security  convertible into any of its shares of beneficial
interest;

             4.1.I.  The information to be furnished by the Current Fund for use
in applications for orders,  registration statements,  proxy materials and other
documents   which  may  be  necessary  in  connection   with  the   transactions
contemplated  hereby  shall be accurate  and  complete  and shall  comply in all
material  respects  with  federal  securities  and  other  laws and  regulations
thereunder applicable thereto;

             4.1.J.  All of the issued and outstanding  Current Fund Shares will
at the  time of the  Closing  be  held  by the  persons  and in the  amounts  as
certified in accordance with the provisions of paragraph 3.4;

             4.1.K.  At the Closing  Date,  the Current  Fund will have good and
marketable  title to the assets to be transferred to the Successor Fund pursuant
to paragraph 1.1, and full right, power and authority to sell, assign,  transfer
and deliver  such assets  hereunder,  and upon  delivery and in payment for such
assets,  the  Successor  Fund will acquire  good and  marketable  title  thereto
subject  to no  restrictions  on  the  full  transfer  thereof,  including  such
restrictions as might arise under the Securities Act of 1933, as amended;

             4.1.L.  The execution,  delivery and  performance of this Agreement
will have been duly authorized prior to the Closing Date by all necessary action
on the part of the  Current  Fund and this  Agreement  constitutes  a valid  and
binding obligation of the Current Fund enforceable in accordance with its terms,
subject to the approval of the Current Fund's Shareholders; and

             4.1.M. No consent, approval, authorization or order of any court or
governmental  authority is required for the  consummation by the Current Fund of
the transactions  contemplated  herein,  except such as shall have been obtained
prior to the Closing Date.

         4.2 The Successor Trust represents and warrants as follows:

             4.2.A.  The  Successor  Trust is a business  trust duly  organized,
validly  existing and in good  standing  under the laws of the State of Delaware


                                      B-6
<PAGE>

and has the power to own all of its  properties  and assets  and to perform  its
obligations under this Agreement; the Successor Trust is not required to qualify
to do  business in any  jurisdiction  in which it is not so  qualified  or where
failure to qualify would not subject it to any material liability or disability;
the Successor Trust has all necessary federal, state and local authorizations to
own all of its  properties  and assets and to carry on its business as now being
conducted;  that as of the date hereof and as of the Closing Date, the Successor
Fund is the only series of the Successor Trust; and the Successor Fund is a duly
established and designated series of the Successor Trust;

             4.2.B. The Successor Trust is not, and the execution,  delivery and
performance of this Agreement will not result,  in violation of any provision of
the  Declaration  of Trust or By-laws of the Successor  Trust or any  agreement,
indenture,  instrument,  contract,  lease or  other  undertaking  to  which  the
Successor Trust is a party or by which the Successor Trust is bound;

             4.2.C.  No material  litigation  or  administrative  proceeding  or
investigation of or before any court or governmental  body is presently  pending
or threatened  against the Successor  Trust or any of its  properties or assets.
The  Successor  Trust  knows of no facts  that  might  form  the  basis  for the
institution of such  proceedings,  and the Successor Trust is not a party to, or
subject  to, the  provisions  of any order,  decree or  judgment of any court or
governmental  body that  materially  and  adversely  affects its business or its
ability to consummate the transactions herein contemplated;

             4.2.D. The Successor Trust will cause the Successor Fund to qualify
as a regulated investment company under subchapter M of the Code for the taxable
year in which the  Closing  occurs and to  continue  to qualify as such for each
taxable year;

             4.2.E.  Prior to the  Closing  Date,  there  shall be no issued and
outstanding  Successor  Shares or any other  securities of the Successor  Trust;
Successor Shares issued in connection with the transactions  contemplated herein
will be duly  and  validly  issued  and  outstanding  and  fully  paid  and non-
assessable;

             4.2.F.  The execution,  delivery and  performance of this Agreement
has been duly  authorized by all  necessary  action on the part of the Successor
Trust,  and this  Agreement  constitutes  a valid and binding  obligation of the
Successor Trust  enforceable  against the Successor Trust in accordance with its
terms;

             4.2.G.  The  information to be furnished by the Successor Trust for
use in applications  for orders,  registration  statements,  proxy materials and
other  documents  which may be necessary  in  connection  with the  transactions
contemplated  hereby  shall be accurate  and  complete  and shall  comply in all


                                      B-7
<PAGE>

material  respects  with  Federal  securities  and  other  laws and  regulations
applicable thereto; and

                  4.2.H.  No consent,  approval,  authorization  or order of any
court  or  governmental  authority  is  required  for  the  consummation  by the
Successor Trust of the transactions  contemplated  herein,  except such as shall
have been obtained prior to the Closing Date.

5.       COVENANTS OF THE CURRENT FUND AND THE SUCCESSOR TRUST

         5.1 The Current Fund covenants that the Successor  Shares are not being
acquired  for the  purpose of making  any  distribution  thereof,  other than in
accordance with the terms of this Agreement.

         5.2 The Current Fund covenants that it will assist the Successor  Trust
in  obtaining  such  information  as the  Successor  Trust  reasonably  requests
concerning the beneficial ownership of Current Fund Shares.

         5.3 The Current Fund will,  from time to time, as and when requested by
the Successor Trust execute and deliver,  or cause to be executed and delivered,
all such assignments and other  instruments,  and will take or cause to be taken
such further  action,  as the Successor Trust may deem necessary or desirable in
order to vest in, and confirm to, the Successor  Fund,  title to, and possession
of, all the assets of the Current  Fund to be sold,  assigned,  transferred  and
delivered  hereunder  and  otherwise to carry out the intent and purpose of this
Agreement.

         5.4 The Successor  Trust will, from time to time, as and when requested
by the Current  Fund,  execute and deliver or cause to be executed and delivered
all such assignments and other  instruments,  and will take or cause to be taken
such  further  action,  as the Current  Fund may deem  necessary or desirable in
order to vest in, and  confirm to, the  Current  Fund,  on behalf of the Current
Funds, title to, and possession of, the Successor Shares issued, sold, assigned,
transferred  and  delivered  hereunder and otherwise to carry out the intent and
purpose of this Agreement.

         5.5 The Successor Trust shall use all reasonable  efforts to obtain the
approvals  and  authorizations  required by the 1933 Act,  the 1940 Act and such
state  securities laws as it may deem  appropriate in order to operate after the
Closing Date.

         5.6 Subject to the provisions of this  Agreement,  the Successor  Trust
and the Current Fund each will take,  or cause to be taken,  all action and will
do or cause to be done all things reasonably  necessary,  proper or advisable to
consummate and make effective the transactions contemplated by this Agreement.

                                      B-8
<PAGE>

         5.7 As promptly as  practicable,  but in any event within 60 days after
the Closing Date, the Current Fund shall furnish to the Successor Trust, in such
form as is reasonably  satisfactory  to the Successor  Trust, a statement of the
earnings and profits of the Current Fund for federal income tax purposes, and of
any capital  loss  carryovers  and other items that will be carried  over to the
Successor Fund as a result of Section 381 of the Code, and which  statement will
be certified by the President or Treasurer of the Current Fund.

6.       CONDITIONS PRECEDENT TO OBLIGATIONS OF THE CURRENT FUND

         The  obligations  of the Current Fund to  consummate  the  transactions
provided for herein shall be subject to the  performance by the Successor  Trust
of all the  obligations to be performed by the Successor  Trust  hereunder on or
before the Closing  Date and,  in addition  thereto,  to the  following  further
conditions:

         6.1 All representations and warranties of the Successor Trust contained
in this Agreement  shall be true and correct in all material  respects as of the
date hereof except as they may be affected by the  transactions  contemplated by
this  Agreement,  as of the Closing  Date,  with the same force and effect as if
made on and as of the Closing Date; and

         6.2 The Successor Trust shall have delivered on the Closing Date to the
Current  Fund a  certificate  executed  in the  Successor  Trust's  name  by its
President or Vice President,  in form and substance  satisfactory to the Current
Fund, dated as of the Closing Date, to the effect that the  representations  and
warranties of the Successor Trust made in this Agreement are true and correct at
and as of the Closing Date,  except as they may be affected by the  transactions
contemplated by this Agreement, and as to such other matters as the Current Fund
shall reasonably request.

Each of the foregoing conditions precedent may be waived by the Current Fund.

7.       CONDITIONS PRECEDENT TO OBLIGATIONS OF THE SUCCESSOR TRUST

         The obligations of the Successor  Trust to consummate the  transactions
provided for herein shall be subject to the  performance  by the Current Fund of
all the  obligations  to be performed by the Current Fund hereunder on or before
the Closing Date and, in addition thereto, to the following further conditions:

         7.1 All representations and warranties of the Current Fund contained in
this Agreement shall be true and correct in all material respects as of the date
hereof and, except as they may be affected by the  transactions  contemplated by
this  Agreement,  as of the Closing  Date,  with the same force and effect as if


                                      B-9
<PAGE>

made on and as of the Closing Date;

         7.2 The Current Fund shall have delivered to the Successor Trust on the
Closing Date a statement of the Current Fund's assets and liabilities,  prepared
in  accordance  with  generally  accepted  accounting  principles   consistently
applied,  together with a certificate of the Treasurer or Assistant Treasurer of
the Current Fund as to its portfolio  securities  and the Current Fund's federal
income tax basis and holding period for each such  portfolio  security as of the
Closing Date; and

         7.3 The Current Fund shall have delivered to the Successor Trust on the
Closing Date a certificate  executed in the Current Fund's name by its President
or Vice President,  in form and substance  satisfactory to the Successor  Trust,
dated  as of the  Closing  Date,  to the  effect  that the  representations  and
warranties  of the Current Fund made in this  Agreement  are true and correct at
and as of the Closing Date,  except as they may be affected by the  transactions
contemplated  by this  Agreement,  and as to such other matters as the Successor
Trust shall reasonably request.

         Each  of  the  foregoing  conditions  precedent  may be  waived  by the
Successor Trust.

8.       FURTHER CONDITIONS PRECEDENT TO OBLIGATIONS OF THE CURRENT FUND AND THE
         SUCCESSOR TRUST

         The  obligations  of the Current Fund and the Successor  Trust are each
subject to the further conditions that on or before the Closing Date:

         8.1 This Agreement and the transactions  contemplated herein shall have
been  approved by the  requisite  vote of the  Current  Fund's  Shareholders  in
accordance with applicable law;

         8.2 On the Closing Date, no action,  suit or other  proceeding shall be
pending  before  any  court or  governmental  agency  in which it is  sought  to
restrain or prohibit or to obtain  damages or other relief in  connection  with,
the transactions contemplated hereby;

         8.3 All consents of other  parties and all other  consents,  orders and
permits of federal,  state and local regulatory  authorities (including those of
the  Commission and of state  securities  authorities)  deemed  necessary by the
Successor  Trust or the Current  Fund to permit  consummation,  in all  material
respects,  of the  transactions  contemplated  hereby shall have been  obtained,
except  where  failure to obtain  any such  consent,  order or permit  would not
involve a risk of a material  adverse  effect on the assets or properties of the
Successor  Trust or the Current Fund,  provided that either party hereto may for


                                      B-10
<PAGE>

itself waive any of such conditions;

         8.4 The  President  of the  Successor  Trust  shall  have  delivered  a
certificate  to the  Current  Fund  on the  Closing  Date  certifying  that  the
Successor Trust has taken all necessary  action so that it shall be a registered
open-end investment company under the 1940 Act; and

         8.5 The Current Fund and the Successor  Trust shall have received on or
before the Closing Date an opinion of Hale and Dorr  satisfactory to the Current
Fund and the Successor Trust,  substantially to the effect that, with respect to
the Current Fund, for federal income tax purposes:

                  8.5.A.  The acquisition of all of the assets of a Current Fund
         by the Successor  Fund solely in exchange for the issuance of Successor
         Shares to the Current Fund and the  assumption by the Successor Fund of
         all  of  the   liabilities  of  the  Current  Fund,   followed  by  the
         distribution  in  liquidation  by the  Current  Fund of such  Successor
         Shares to the Current Fund  Shareholders  in exchange for their Current
         Fund Shares and the  termination of the Current Fund, will constitute a
         reorganization within the meaning of Section 368(a)(1) of the Code, and
         the  Current  Fund and the  Successor  Fund  will each be "a party to a
         reorganization" within the meaning of Section 368(b) of the Code;

                  8.5.B.  No gain or loss will be recognized by the Current Fund
         upon (i) the transfer of all of its assets to the Successor Fund solely
         in exchange for the  issuance of  Successor  Shares to the Current Fund
         and  the  assumption  by  the  Successor  Fund  of the  Current  Fund's
         liabilities  and  (ii)  the  distribution  by the  Current  Fund of the
         Successor Shares to the Current Fund Shareholders;

                  8.5.C.  No gain or loss will be  recognized  by any  Successor
         Fund upon its receipt of all of the  Current  Fund's  assets  solely in
         exchange for the issuance of the  Successor  Shares to the Current Fund
         and the assumption by the Successor  Fund of all of the  liabilities of
         the Current Fund;

                  8.5.D.  The tax basis of the assets  acquired  by a  Successor
         Fund from the  Current  Fund will be the same as the tax basis of those
         assets in the Current Fund's hands immediately before the transfer;

                  8.5.E.  The tax  holding  period of the assets of the  Current
         Fund in the hands of the Successor Fund will include the Current Fund's
         tax holding period for those assets;

                                      B-11
<PAGE>

                  8.5.F. The Current Fund's Shareholders will not recognize gain
         or loss upon the exchange of all of their  Current  Fund Shares  solely
         for Successor Shares as part of the transaction;

                  8.5.G.  The tax  basis of the  Successor  Shares  received  by
         Current  Fund  Shareholders  in  the  transaction  will  be,  for  each
         shareholder,  the same as the tax  basis  of the  Current  Fund  Shares
         surrendered in exchange therefor; and

                  8.5.H. The tax holding period of the Successor Shares received
         by Current Fund Shareholders  will include,  for each such Shareholder,
         the tax holding  period for the  Current  Fund  Shares  surrendered  in
         exchange  therefor,  provided that the Current Fund Shares were held as
         capital assets on the date of the exchange.

The  Current  Fund  and   Successor   Trust  each  agree  to  make  and  provide
representations  with respect to the Current Fund and the  Successor  Fund which
are  reasonably  necessary  to  enable  Hale  and  Dorr to  deliver  an  opinion
substantially as set forth in this paragraph 8.5, which opinion may address such
other federal income tax  consequences,  if any, as Hale and Dorr believes to be
material to the transaction.

         Each of the  foregoing  conditions  precedent to the  obligations  of a
party,  except  for the  receipt  of the  opinion  of Hale and Dorr set forth in
paragraph 8.5, may be waived by that party.

9.       BROKERAGE FEES AND EXPENSES

         9.1 The Successor Trust and the Current Fund each represent and warrant
to the other that there are no broker's or finder's  fees payable in  connection
with the transactions contemplated hereby.

         9.2 The Current  Fund and the  Successor  Fund shall each be liable for
its own expenses  incurred in connection with entering into and carrying out the
provisions of this Agreement whether or not the transactions contemplated hereby
are  consummated;  if the  transactions  are  consummated,  such expenses of the
Current Fund will be assumed by the Successor Fund as part of the transactions.

10.      ENTIRE AGREEMENT

         The  Successor  Trust and the Current Fund agree that neither party has
made any representation, warranty or covenant not set forth herein and that this
Agreement   constitutes   the  entire   agreement   between  the  parties.   The
representations,  warranties and covenants  contained  herein or in any document
delivered   pursuant  hereto  or  in  connection   herewith  shall  survive  the
consummation of the transactions contemplated hereunder.

                                      B-12
<PAGE>

11.      TERMINATION

         11.1 This  Agreement may be  terminated by the mutual  agreement of the
Successor Trust and the Current Fund. In addition, either the Successor Trust or
the Current Fund may at its option  terminate  this Agreement at or prior to the
Closing Date because:

                  11.1.A.  There exists a material  breach by the other party of
         any  representations,  warranties or agreements  contained herein to be
         performed at or prior to the Closing Date; or

                  11.1.B.  A condition  herein  expressed to be precedent to the
         obligations of the terminating party has not been met and it reasonably
         appears that it will not or cannot be met.

         11.2 In the event of any such termination,  there shall be no liability
for damages on the part of the  Successor  Trust or the Current  Fund,  or their
respective trustees,  directors or officers, to the other party or its trustees,
directors or officers.

12.      AMENDMENT

         This Agreement may be amended,  modified or supplemented in such manner
as may be mutually  agreed upon in writing by the  parties;  provided,  however,
that   following  the  approval  of  this   Agreement  by  the  Current   Funds'
Shareholders,  no such  amendment may have the effect of changing the provisions
for  determining  the number of Successor  Shares to be paid to the Current Fund
Shareholders  under  this  Agreement  to  the  detriment  of  the  Current  Fund
Shareholders without their further approval.

13.      HEADINGS; COUNTERPARTS; GOVERNING LAW; ASSIGNMENT

         13.1 The article and paragraph headings contained in this Agreement are
for  reference  purposes  only and shall not  affect in any way the  meaning  or
interpretation of this Agreement.

         13.2 This Agreement may be executed in any number of counterparts, each
of which shall be deemed an original.

         13.3 This  Agreement  shall be governed by and  construed in accordance
with the laws of The Commonwealth of Massachusetts.

         13.4 This  Agreement  shall be binding upon and inure to the benefit of
the  parties  hereto  and  their  respective  successors  and  assigns,  but  no
assignment or transfer hereof or of any rights or obligations hereunder shall be
made by any party without the written consent of the other party. Nothing herein
expressed  or implied is intended or shall be  construed  to confer upon or give
any  person,  firm or  corporation  other  than the  parties  hereto  and  their


                                      B-13
<PAGE>

respective  successors  and assigns any rights or remedies under or by reason of
this Agreement.

         13.5 All persons  dealing with the Successor  Trust must look solely to
the property of the Successor  Trust for the  enforcement  of any claims against
the Successor Trust as neither the Trustees,  officers,  agents nor shareholders
of the Successor  Trust assume any personal  liability for  obligations  entered
into on behalf of the Successor  Trust.  No other series of the of the Successor
Trust hereafter  established shall be responsible for any obligations assumed by
the Successor Trust on behalf of the Successor Fund under this Agreement.

         13.6 A copy of the  Agreement and  Declaration  of Trust of the Current
Fund  is  on  file  with  the  Secretary  of  State  of  The   Commonwealth   of
Massachusetts,  and notice is hereby given that this  instrument  is executed on
behalf of the Trustees of the Current Fund as trustees and not  individually and
that  the  obligations  of this  instrument  are  not  binding  upon  any of the
trustees,  officers,  or shareholders of the Current Fund individually,  but are
binding only upon the assets and property of the Current Fund.

14.      NOTICES

         Any notice,  report,  statement or demand  required or permitted by any
provisions of this  Agreement  shall be in writing and shall be given by prepaid
telegraph,  telecopy or  certified  mail  addressed  to the Current  Fund or the
Successor  Trust,  each  at  60  State  Street,  Boston,   Massachusetts  02109,
Attention: Secretary.

                                      B-14

<PAGE>



         IN  WITNESS  WHEREOF,  each  of the  parties  hereto  has  caused  this
Agreement to be executed by its duly authorized officer.


                                    PIONEER THREE


                                    By:_____________________________

                                    Its:____________________________
                                         Title



                                    PIONEER    MID-CAP   GROWTH
                                    FUND,  a Delaware  business
                                    trust, on behalf of Pioneer
                                    Mid-Cap Growth Fund

                                    By:_____________________________

                                    Its:____________________________
                                         Title



                                      B-15




                                PRELIMINARY COPY


PROXY                                                                     PROXY

                                  PIONEER THREE


                  PROXY FOR THE SPECIAL MEETING OF SHAREHOLDERS
                           To be held January 23, 1996


         The undersigned, having received notice of the meeting and management's
proxy statement therefor, and revoking all prior proxies, hereby appoint(s) John
F. Cogan,  Jr., David D. Tripple,  Robert P. Nault and Joseph P. Barri, and each
of  them,  attorneys  or  attorney  of  the  undersigned  (with  full  power  of
substitution in them and each of them) for and in the name(s) of the undersigned
to attend the Special  Meeting of  Shareholders of Pioneer Three (the "Fund") to
be held on Tuesday,  January 23, 1996 at 2:00 p.m.  (Boston time) at the offices
of Hale and Dorr,  counsel to the Fund,  60 State  Street,  26th Floor,  Boston,
Massachusetts  02109 (the  "Meeting"),  and any  adjourned  session or  sessions
thereof,  and there to vote and act upon the  following  matters  (as more fully
described in the  accompanying  Proxy Statement) in respect of all shares of the
Fund which the  undersigned  will be entitled to vote or act upon,  with all the
powers the undersigned would possess if personally present:

      (1) To approve amendments to the Fund's investment objectives:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (2) To approve a new Management  Contract  between the Fund and Pioneering
          Management Corporation, the Fund's investment adviser ("PMC"), 
          including a performance based management fee:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (3) To approve an Agreement and Plan of  Reorganization  pursuant to which
          the Fund will be reorganized as a Delaware business trust:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

   
                                   -2-
<PAGE>

      (4) To elect Trustees:

          The nominees for  Trustees  are:  J.F.  Cogan,  Jr., Dr. R.H.  Egdahl,
          M.B.W. Graham, J.W. Kendrick,  M.A. Piret, D.D. Tripple, S.K. West and
          J. Winthrop.

          / / FOR electing  all the  nominees
          (except as marked to the contrary above)

          To withhold  authority  to vote for one or more the  nominees,  circle
          those nominees names above.

          / / WITHHOLD authority to vote for all nominees

      (5) To  approve  an  amendment  to  the  Fund's  fundamental   investment
          restriction regarding repurchase agreements:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (6) To  approve  the  elimination  of the  Fund's  fundamental  investment
          restriction regarding short sales:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (7) To  approve  an  amendment  to  the  Fund's  fundamental   investment
          restriction regarding underwriting:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (8) To  approve  the  elimination  of the  Fund's  fundamental  investment
          restriction  regarding  investment  in investment companies.
 
          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (9) To  approve  the  elimination  of the  Fund's  fundamental  investment
          restriction  regarding  percentage  investment  in the  securities  of
          a single issuer:
 
          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (10) To  approve  the  elimination  of the  Fund's  fundamental  
           investment restriction  regarding  investment in the voting   
           securities of a single issuer:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (11)To  approve  an  amendment  to  the  Fund's  fundamental  investment
          restriction regarding commodities:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (12)To  approve  the  elimination  of the Fund's  fundamental  investment
          restriction regarding restricted securities:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

                                      -3-
<PAGE>

      (13)To  approve  the  elimination  of the Fund's  fundamental  investment
          restriction regarding "unseasoned" issuers:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (14)To  approve  the  elimination  of the Fund's  fundamental  investment
          restriction regarding affiliates of affiliates of the Fund:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (15)To  approve  an  amendment  to  the  Fund's  fundamental  investment
          restriction regarding loans:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (16)To  approve  an  amendment  to  the  Fund's  fundamental  investment
          restriction regarding borrowing:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (17)To approve the addition of a new fundamental  investment  restriction
          regarding "senior securities":

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (18)To  approve  the  elimination  of the Fund's  investment  restriction
          regarding industry concentration:

          FOR |_|        AGAINST |_|         ABSTAIN |_|

      (19)To  ratify  the  selection  of  Arthur  Andersen  LLP as  the  Fund's
          independent  public accountants for the fiscal year ending 
          September 30, 1996:

          FOR |_|        AGAINST |_|         ABSTAIN |_|


IN THEIR DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH OTHER BUSINESS
AS MAY PROPERLY COME BEFORE THE MEETING OR ANY ADJOURNMENT THEREOF.

                                      -3-

<PAGE>



         THE SHARES  REPRESENTED  BY THIS PROXY WILL BE VOTED AS DIRECTED BY THE
UNDERSIGNED.  IF NO  DIRECTION  IS  GIVEN,  THIS  PROXY  WILL BE  VOTED  FOR THE
PROPOSAL.

                                            DATED:  ......................, 1995

                                            ....................................

                                            ....................................
                                                        Signature(s)

                                            In  signing,  please  write  name(s)
                                            exactly as  appearing  hereon.  When
                                            signing   as   attorney,   executor,
                                            administrator  or  other  fiduciary,
                                            please give your full title as such.
                                            Joint   owners   should   each  sign
                                            personally.

THIS  PROXY IS  SOLICITED  ON BEHALF OF THE BOARD OF  TRUSTEES  OF THE TRUST AND
SHOULD BE RETURNED AS SOON AS POSSIBLE IN THE ENVELOPE PROVIDED


                                      -4-


Pioneer Three
60 State Street
Boston, MA  02109

November 1995

Dear Fellow Shareowners,

I am writing to let you know that a special  meeting  will be held  January  23,
1996,  for  shareowners  of  Pioneer  Three  to vote on a  number  of  important
proposals.  As a shareowner in the Fund, you have the  opportunity to voice your
opinion on these matters.

This package contains information about the proposals, along with the proxy card
for you to use when voting by mail.  Please  take a moment to read the  enclosed
materials and cast your vote on the yellow proxy card.

Your  prompt  vote will help save the Fund  money.  If a majority  of the Fund's
shareowners  have not voted prior to the  meeting,  we must try to obtain  their
votes with additional mailings or phone solicitation. That is a costly process.

(callout in margin) VOTING YOUR SHARES BY MAIL IS QUICK AND EASY. EVERYTHING YOU
NEED IS ENCLOSED.

Each of the proposals up for approval has been reviewed by Pioneer ThreeOs Board
of Trustees, whose primary role is to protect your interests as a shareowner. In
the  Trustees'  opinion,  the proposals  are fair and  reasonable.  The Trustees
recommend that you vote FOR each proposal.

(callout in margin) THE FUND'S  BOARD OF TRUSTEES  RECOMMENDS  THAT YOU VOTE FOR
EACH PROPOSAL.

HERE IS WHAT A FOR VOTE MEANS FOR EACH OF THE PROPOSALS BEING CONSIDERED.

PROPOSAL 1:
AUTHORIZE AMENDMENTS TO THE FUND'S INVESTMENT OBJECTIVES.  As proposed, the Fund
would shift from dual objectives of reasonable income and growth of capital to a
single  objective  of capital  growth.  Although  the Fund will still be able to
invest in income-producing securities, it will not be required to do so.

PROPOSAL 2:
APPROVE A NEW MANAGEMENT CONTRACT WITH PIONEERING MANAGEMENT  CORPORATION (PMC),
including  a  performance-based   management  fee.  Depending  upon  the  Fund's
investment performance, relative to a selected securities index, the fee paid by
the Fund may be lower or higher  than the  proposed  base fee of 0.625% of daily
net assets.

PROPOSAL 3:
ALLOW THE FUND TO BE REORGANIZED AS A DELAWARE  BUSINESS TRUST.  Currently,  the
Fund is registered as a Massachusetts  business  trust.  As a Delaware  business
trust, the Fund would be able to offer multiple classes of shares.

PROPOSAL 4:
ELECT EIGHT TRUSTEES TO THE BOARD. The Trustees  supervise the Fund's activities
and review contractual  arrangements with companies that provide services to the
Fund. All of the nominees currently serve as Trustees.



<PAGE>


PROPOSALS 5 THROUGH 17:
MODERNIZE THE FUND'S OPERATING STRUCTURE AND INVESTMENT POLICIES to conform with
current  standards in the mutual fund industry.  The Fund's Trustees believe the
proposed changes are appropriate and necessary to update the Fund since its last
shareowner  meeting,  held in 1990.  For detail on each of these  Proposals,  we
encourage you to read the enclosed Proxy Statement.

PROPOSAL 18:
RATIFY THE  SELECTION OF ARTHUR  ANDERSEN LLP AS THE FUND'S  INDEPENDENT  PUBLIC
ACCOUNTANTS FOR THE FISCAL YEAR ENDING SEPTEMBER 30, 1996.

Cast your vote by completing  and signing the yellow proxy card enclosed in this
package.  Please mail your  completed  and signed  proxy as quickly as possible,
using the postage-paid envelope provided.

(callout in margin) PLEASE VOTE! YOUR VOTE IS EXTREMELY IMPORTANT, NO MATTER HOW
MANY SHARES YOU OWN.

One final  note.  It is  expected  that the Fund's  name will  change to Pioneer
Mid-Cap Fund after the shareowner meeting date.

Please feel free to call  Pioneer at  1-800-225-6292  if you have any  questions
about the  proposals or the process for voting your  shares.  Thank you for your
prompt response.

Sincerely,

John F. Cogan, Jr.
Chairman


1195-2928
<PAGE>


Pioneer Three
60 State Street
Boston, MA  02109

URGENT
PLEASE VOTE YOUR SHARES TODAY

Dear Fellow Shareowner,

Not too long ago we sent you a proxy card and materials explaining the proposals
up for a vote at Pioneer ThreeOs January 23, 1996,  shareowner  meeting. WE NEED
YOU TO CAST YOUR VOTE!

If you have not already  completed  and returned the proxy card  included in our
earlier package,  PLEASE TAKE A MOMENT NOW TO COMPLETE THE ENCLOSED YELLOW PROXY
CARD AND MAIL IT TO US IN THE POSTAGE-PAID ENVELOPE PROVIDED.

The  proposals up for approval  have been  reviewed by Pioneer  ThreeOs Board of
Trustees,  whose primary role is to protect your  interests as a shareowner.  In
the  Trustees'  opinion,  the proposals  are fair and  reasonable.  The Trustees
recommend that you vote FOR each proposal. For your easy reference,  on the back
of this page is a summary of what a FOR vote would mean for each proposal.

PLEASE  VOTE!  YOUR VOTE IS EXTREMELY  IMPORTANT,  NO MATTER HOW MANY SHARES YOU
OWN.

Please feel free to call us at  1-800-225-6292  if you have any questions  about
the  proposals or the process for voting your shares.  Thank you for your prompt
response.

Sincerely,

John F. Cogan, Jr.
Chairman



<PAGE>


back page

Here is what a FOR  vote  means  for  each of the  proposals  being  considered.
PROPOSAL 1:
AUTHORIZE AMENDMENTS TO THE FUND'S INVESTMENT OBJECTIVES.  As proposed, the Fund
would shift from dual objectives of reasonable income and growth of capital to a
single  objective  of capital  growth.  Although  the Fund will still be able to
invest in income-producing securities, it will not be required to do so.

PROPOSAL 2:
APPROVE A NEW MANAGEMENT CONTRACT WITH PIONEERING MANAGEMENT  CORPORATION (PMC),
including  a  performance-based   management  fee.  Depending  upon  the  Funds
investment performance, relative to a selected securities index, the fee paid by
the Fund may be lower or higher  than the  proposed  base fee of 0.625% of daily
net assets.

PROPOSAL 3:
ALLOW THE FUND TO BE REORGANIZED AS A DELAWARE  BUSINESS TRUST.  Currently,  the
Fund is registered as a Massachusetts  business  trust.  As a Delaware  business
trust, the Fund would be able to offer multiple classes of shares.

PROPOSAL 4:
ELECT EIGHT TRUSTEES TO THE BOARD. The Trustees  supervise the Fund's activities
and review contractual  arrangements with companies that provide services to the
Fund. All of the nominees currently serve as Trustees.

PROPOSALS 5 THROUGH 17:
MODERNIZE THE FUND'S OPERATING STRUCTURE AND INVESTMENT POLICIES to conform with
current  standards in the mutual fund industry.  The Fund's Trustees believe the
proposed changes are appropriate and necessary to update the Fund since its last
shareowner  meeting,  held in 1990.  For detail on each of these  Proposals,  we
encourage you to read the enclosed Proxy Statement.

PROPOSAL 18:
RATIFY THE  SELECTION OF ARTHUR  ANDERSEN LLP AS THE FUND'S  INDEPENDENT  PUBLIC
ACCOUNTANTS FOR THE FISCAL YEAR ENDING SEPTEMBER 30, 1996.


PLEASE  VOTE!  YOUR VOTE IS EXTREMELY  IMPORTANT,  NO MATTER HOW MANY SHARES YOU
OWN.


1195-2929

<PAGE>

Pioneer Three
60 State Street
Boston, MA  02109

URGENT
PLEASE VOTE YOUR SHARES TODAY

Dear Fellow Shareowner,

TIME IS RUNNING  OUT.  You have not yet returned the proxy cards we sent for you
to use in  voting on the  proposals  up for  consideration  at  Pioneer  ThreeOs
January 23, 1996, shareowner meeting. WE NEED YOU TO CAST YOUR VOTE TODAY!

Voting  now will  help  save  your  Fund  money.  If a  majority  of the  Fund's
shareowners  have not voted  before  January  23, we must delay the  meeting and
begin the  proposal and voting  process all over again.  This would be extremely
costly to the Fund and, ultimately, to you as a shareowner.

If you have not already  completed and returned the proxy cards  included in our
earlier packages, PLEASE TAKE A MOMENT NOW TO COMPLETE THE ENCLOSED YELLOW PROXY
CARD AND MAIL IT TO US TODAY IN THE POSTAGE-PAID ENVELOPE PROVIDED.

The  proposals up for approval  have been  reviewed by Pioneer  ThreeOs Board of
Trustees,  whose primary role is to protect your  interests as a shareowner.  In
the  Trustees'  opinion,  the proposals  are fair and  reasonable.  The Trustees
recommend that you vote FOR each proposal. For your easy reference,  on the back
of this page is a summary of what a FOR vote would mean for each proposal.

VOTE TODAY! YOUR VOTE IS EXTREMELY IMPORTANT, NO MATTER HOW MANY SHARES YOU OWN.

Please feel free to call us at  1-800-225-6292  if you have any questions  about
the  proposals  or the  process  for  voting  your  shares.  Thank  you for your
immediate response.

Sincerely,

John F. Cogan, Jr.
Chairman



<PAGE>


back page

Here is what a FOR  vote  means  for  each of the  proposals  being  considered.
PROPOSAL 1:
AUTHORIZE AMENDMENTS TO THE FUND'S INVESTMENT OBJECTIVES.  As proposed, the Fund
would shift from dual objectives of reasonable income and growth of capital to a
single  objective  of capital  growth.  Although  the Fund will still be able to
invest in income-producing securities, it will not be required to do so.

PROPOSAL 2:
APPROVE A NEW MANAGEMENT CONTRACT WITH PIONEERING MANAGEMENT  CORPORATION (PMC),
including  a  performance-based   management  fee.  Depending  upon  the  Fund's
investment performance, relative to a selected securities index, the fee paid by
the Fund may be lower or higher  than the  proposed  base fee of 0.625% of daily
net assets.

PROPOSAL 3:
ALLOW THE FUND TO BE REORGANIZED AS A DELAWARE  BUSINESS TRUST.  Currently,  the
Fund is registered as a Massachusetts  business  trust.  As a Delaware  business
trust, the Fund would be able to offer multiple classes of shares.

PROPOSAL 4:
ELECT EIGHT TRUSTEES TO THE BOARD. The Trustees  supervise the Fund's activities
and review contractual  arrangements with companies that provide services to the
Fund. All of the nominees currently serve as Trustees.

PROPOSALS 5 THROUGH 17:
MODERNIZE THE FUND'S OPERATING STRUCTURE AND INVESTMENT POLICIES to conform with
current  standards in the mutual fund industry.  The Fund's Trustees believe the
proposed changes are appropriate and necessary to update the Fund since its last
shareowner  meeting,  held in 1990.  For detail on each of these  Proposals,  we
encourage you to read the enclosed Proxy Statement.

PROPOSAL 18:
RATIFY THE  SELECTION OF ARTHUR  ANDERSEN LLP AS THE FUND'S  INDEPENDENT  PUBLIC
ACCOUNTANTS FOR THE FISCAL YEAR ENDING SEPTEMBER 30, 1996.


PLEASE VOTE TODAY! YOUR VOTE IS EXTREMELY  IMPORTANT,  NO MATTER HOW MANY SHARES
YOU OWN.


1195-2930




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