PIONEER MID CAP FUND
485B24E, 1997-01-28
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                                                             File Nos. 2-79140
                                                              811-3564

   
 As Filed with The Securities and Exchange Commission January 28, 1997
    

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM N-1A
                                                                               
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933   /_X__/
                                                                              
                              Pre-Effective Amendment No. ___         /____/
                                                                            
   
                              Post-Effective Amendment No. 22         /_X__/
    

                                     and/or

         REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT
                                   OF 1940                            / X  /

   
                              Amendment No. 22                        /_X _/
                        (Check appropriate box or boxes)

                              PIONEER MID-CAP FUND
               (Exact name of registrant as specified in charter)
    

                  60 State Street, Boston, Massachusetts     02109
                  (Address of principal executive office)    Zip Code

   Registrant's Telephone Number, including Area Code: (617) 742-7825

 Joseph P.  Barri,  Hale and Dorr  LLP,  60 State  Street,   Boston,  MA  02109
               (Name  and  address  of  agent  for service)

It is proposed that this filing will become effective:

   
          _X_ on January 28, 1997 pursuant to paragraph (b) of Rule 485

Registrant  has  registered  an  indefinite   amount  of  securities  under  the
Securities Act of 1933 pursuant to Section 24(f) of the  Investment  Company Act
of 1940.  Registrant  filed a Rule  24f-2  Notice  for its  fiscal  year  ending
September 30, 1996 on November 25, 1996.

Title of      Amount of      Proposed        Proposed
Securities     Shares        Maximum         Maximum             Amount of
Being          Being         Offering Price  Aggregate           Registration
Registered     Registered    Per Unit        Offering Price      Fee

Shares         9,622,220       $ 22.00        $211,688,840       $  100
    



<PAGE>



   
        This  calculation  has  been  made  pursuant  to Rule  24e-2  under  the
Investment Company Act of 1940. During its fiscal year ended September 30, 1996,
the Registrant redeemed or repurchased  9,607,220 shares of beneficial interest,
none of which  were used by the  Registrant  on its Rule 24f-2  Notice  filed on
November  25,  1996,  and all of which are being  used  herein for  purposes  of
reducing the filing fee payable herewith under Rule 24e-2. An additional  15,000
shares being registered hereby are valued at the public offering price of $22.00
as of January 21, 1997.
    




<PAGE>
                                                                               





   
                              PIONEER MID-CAP FUND
    

    Cross-Reference Sheet Showing Location in Prospectus and Statementof 
               Additional Information of Information
             Required by Items of the Registration Form

   

                                                     Location in
                                                     Prospectus or
                                                     Statement of
                                                     Additional
Form N-1A Item Number and Caption                    Information
- ---------------------------------                    -----------
                                            

1.       Cover Page                              Prospectus - Cover
                                                 Page

2.       Synopsis                                Prospectus - Expense
                                                 Information

3.       Condensed Financial Information         Prospectus -
                                                 Financial Highlights

4.       General Description of Registrant       Prospectus - Cover
                                                 Page; Investment Objective and
                                                 Policies;Management of
                                                 the Fund; Fund Share
                                                 Alternatives; Share Price;
                                                 How to Buy Fund Shares; How
                                                 to Sell Fund Shares; How to
                                                 Exchange Fund Shares; The
                                                 Fund

5.       Management of the Fund                  Prospectus -
                                                 Management of the Fund

6.       Capital Stock and Other Securities      Prospectus -
                                                 Investment Objective and
                                                 Policies; Management of
                                                 the  Fund; Fund Share
                                                 Alternatives; Share Price;
                                                 How to Buy Fund Shares; How
                                                 to Sell Fund Shares; How to
                                                 Exchange Fund Shares;
                                                 Dividends, Distributions
                                                 and Taxation; The Fund

7.       Purchase of Securities Being
           Offered                               Prospectus - Fund
                                                 Share Alternatives; Share
                                                 Price; How to Buy Fund Shares;
                                                 How to Sell Fund Shares; How to
                                                 Exchange Fund  Shares;
                                                 Distribution Plans;
                                                 Shareholder Services; The
                                                 Fund





8.       Redemption or Repurchase                Prospectus - Fund
                                                 Share Alternatives;  Share
                                                 Price; How to Buy Fund Shares;
                                                 How to Sell Fund Shares; How to
                                                 Exchange Fund Shares;
                                                 Shareholder Services; The
                                                 Fund

9.       Pending Legal Proceedings  ........     Not Applicable


10.      Cover Page                              Statement of
                                                 Additional Information -
                                                 Cover Page

11.      Table of Contents                       Statement of
                                                 Additional Information -
                                                 Cover Page

12.      General Information and History         Statement of
                                                 Additional Information -
                                                 Description of Shares

13.      Investment Objectives and Policies      Statement of
                                                 Additional Information -
                                                 Investment Policies and
                                                 Restrictions



14.      Management of the Fund                  Statement of
                                                 Additional Information -
                                                 Management of the Fund;
                                                 Investment Adviser

15.      Control Persons and Principal Holders
           of Securities                         Statement of
                                                 Additional Information -
                                                 Management of the Fund

16.      Investment Advisory and Other
           Services                              Statement of
                                                 Additional Information -
                                                 Management of theFund;
                                                 Investment Adviser;
                                                 Underwriting Agreement and
                                                 Distribution Plans;
                                                 Shareholder
                                                 Servicing/Transfer Agent;
                                                 Custodian;Principal
                                                 Underwriter;Independent
                                                 Public  Accountants






17.      Brokerage Allocation and Other
         Practices                               Statement of
                                                 Additional Information -
                                                 Portfolio Transactions

18.      Capital Stock and Other Securities      Statement of
                                                 Additional Information -
                                                 Description of Shares

19.      Purchase, Redemption and Pricing of
           Securities Being Offered              Statement of
                                                 Additional Information -
                                                 Letter  of Intention;
                                                 Systematic Withdrawal Plan;
                                                 Determination of Net Asset 
                                                 Value

20.      Tax Status                              Statement of
                                                 Additional  Information -
                                                 Tax Status

21.      Underwriters                            Statement of
                                                 Additional Information -
                                                 Underwriting Agreement and
                                                 Distribution Plans;
                                                 Principal Underwriter

22.      Calculation of Performance Data         Statement of
                                                 Additional Information -
                                                 Investment Results

23.      Financial Statements                    Financial
                                                 Statements
    

<PAGE>



Pioneer
Mid-Cap Fund

   
Class A, Class B and Class C Shares
Prospectus
January 28, 1997

   Pioneer Mid-Cap Fund (the "Fund") seeks capital growth by investing in a
diversified portfolio of securities consisting primarily of common stocks. Any
current income generated from these securities is incidental to the investment
objective of the Fund.

   In order to achieve its investment objective, the Fund will invest at least
65% of its total assets in common stocks and common stock equivalents (such as
convertible bonds and preferred stock) of companies with a market capitalization
between $100 million and $5 billion ("Mid-Cap Companies"). The Fund may invest a
portion of its assets in foreign securities. See "Investment Objective and
Policies" in this Prospectus. There is no assurance that the Fund will achieve
its investment objective.

   FUND RETURNS AND SHARE PRICES FLUCTUATE AND THE VALUE OF YOUR ACCOUNT UPON
REDEMPTION MAY BE MORE OR LESS THAN YOUR PURCHASE PRICE. SHARES IN THE FUND ARE
NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER
DEPOSITORY INSTITUTION, AND THE SHARES ARE NOT FEDERALLY INSURED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER GOVERNMENT
AGENCY. INVESTMENTS IN THE SECURITIES OF MID-CAP COMPANIES MAY OFFER GREATER
CAPITAL APPRECIATION POTENTIAL THAN INVESTMENTS IN LARGE-CAPITALIZATION COMPANY
SECURITIES, BUT MAY BE SUBJECT TO GREATER SHORT-TERM PRICE FLUCTUATIONS. THE
FUND IS INTENDED FOR INVESTORS WHO CAN ACCEPT THE RISKS ASSOCIATED WITH ITS
INVESTMENTS AND MAY NOT BE SUITABLE FOR ALL INVESTORS. SEE "INVESTMENT OBJECTIVE
AND POLICIES" FOR A DISCUSSION OF THESE RISKS.

   This Prospectus provides information about the Fund that you should know
before investing. Please read and retain it for your future reference. More
information about the Fund is included in the Statement of Additional
Information, also dated January 28, 1997, which is incorporated into this
Prospectus by reference. A copy of the Statement of Additional Information may
be obtained free of charge by calling Shareholder Services at 1-800-225-6292 or
by written request to the Fund at 60 State Street, Boston, Massachusetts 02109.
Additional information about the Fund has been filed with the Securities and
Exchange Commission (the "SEC") and is available upon request and without
charge.



            TABLE OF CONTENTS                                         PAGE
- ---------   -----------------------------------------------------   --------
I.          EXPENSE INFORMATION                                         2
II.         FINANCIAL HIGHLIGHTS                                        3
III.        INVESTMENT OBJECTIVE AND POLICIES                           4
IV.         MANAGEMENT OF THE FUND                                      5
V.          FUND SHARE ALTERNATIVES                                     6
VI.         SHARE PRICE                                                 7
VII.        HOW TO BUY FUND SHARES                                      7
VIII.       HOW TO SELL FUND SHARES                                    11
IX.         HOW TO EXCHANGE FUND SHARES                                12
X.          DISTRIBUTION PLANS                                         12
XI.         DIVIDENDS, DISTRIBUTIONS AND TAXATION                      13
XII.        SHAREHOLDER SERVICES                                       14
            Account and Confirmation Statements                        14
            Additional Investments                                     14
            Automatic Investment Plans                                 14
            Financial Reports and Tax Information                      14
            Distribution Options                                       14
            Directed Dividends                                         15
            Direct Deposit                                             15
            Voluntary Tax Withholding                                  15
            Telephone Transactions and Related Liabilities             15
            FactFoneSM                                                 15
            Retirement Plans                                           15
            Telecommunications Device for the Deaf (TDD)               15
            Systematic Withdrawal Plans                                15
            Reinstatement Privilege (Class A Shares Only)              16
XIII.       THE FUND                                                   16
XIV.        INVESTMENT RESULTS                                         16

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
    


                                      
<PAGE>

I. EXPENSE INFORMATION

   
   The table is designed to help you understand the charges and expenses that
you, as a shareholder, will bear directly or indirectly when you invest in the
Fund. Management fees have been restated to reflect the annualized effective fee
rate payable to Pioneering Management Corporation ("PMC") for the period ending
September 30, 1996 under the performance-based management contract in effect
since July 1, 1996. Actual management fees for Class A shares for the fiscal
year ended September 30, 1996 were 0.49% reflecting a management contract in
effect through June 30, 1996. For Class B and Class C shares, other expenses and
distribution fees are based on amounts that would have been incurred if such
shares had been outstanding for the entire fiscal year ended September 30, 1996.
    

Shareholder Transaction Expenses:       Class A      Class B+      Class C+
 Maximum Initial Sales Charge on
  Purchases (as a percentage of
  offering price)                        5.75%(1)      None          None
 Maximum Sales Charge on
  Reinvestment of Dividends              None          None          None
 Maximum Deferred Sales Charge           None(1)       4.00%         1.00%
 (as a percentage of purchase price
  or redemption proceeds, as
  applicable)
 Redemption fee2                         None          None          None
 Exchange fee                            None          None          None
Annual Fund Operating Expenses 
  (as a percentage of average net
  assets):
 Management fee*                         0.50%         0.50%         0.50%
 12b-1 fees                              0.18%         1.00%         1.00%
 Other Expenses (including
  accounting and transfer agent
  fees, custodian fees and printing
  expenses)                              0.21%         0.16%         0.43%
                                       ----------   -----------   ------------
Total Operating Expenses                 0.89%         1.66%         1.93%
                                       ==========   ===========   ============

   
+ Class B and Class C shares were first offered on February 1, 1996.
1 Purchases of $1 million or more and purchases by participants in certain
  group plans are not subject to an initial sales charge but may be subject
  to a contingent deferred sales charge ("CDSC") as further described under
  "How to Sell Fund Shares."
2 Separate fees (currently $10 and $20, respectively) apply to domestic and
  international wire transfers of redemption proceeds.
* The Fund pays a management fee that may vary from 0.425% to 0.825% based on
  its performance. See "Management of the Fund."
    

   
Example:

   You would pay the following expenses on a $1,000 investment, with or
without redemption at the end of each time period, assuming a 5% annual
return, reinvestment of all dividends and distributions and that the
percentage amounts listed under "Annual Operating Expenses" remain the same
each year.
                                    1 Year   3 Years    5 Years    10 Years
                                   -------    --------  --------   ----------
Class A Shares                       $66       $84        $104       $161
Class B Shares*
- --Assuming complete redemption
  at end of period                   $57       $82        $110       $176
- --Assuming no redemption             $17       $52        $ 90       $176
Class C Shares**
- --Assuming complete redemption
  at end of period                   $30       $61        $104       $225
- --Assuming no redemption             $20       $61        $104       $225

 * Class B shares convert to Class A shares eight years after purchase.
** Class C shares redeemed during the first year after purchase are subject
   to a 1% CDSC.

   THE EXAMPLE IS DESIGNED FOR INFORMATION PURPOSES ONLY, AND SHOULD NOT BE
CONSIDERED A REPRESENTATION OF PAST OR FUTURE EXPENSES OR RETURN. ACTUAL FUND
EXPENSES AND RETURN WILL VARY FROM YEAR TO YEAR AND MAY BE HIGHER OR LOWER
THAN THOSE SHOWN.

   For further information regarding management fees, 12b-1 fees and other
expenses of the Fund, see "Management of the Fund," "Distribution Plans" and
"How To Buy Fund Shares" in this Prospectus and "Management of the Fund" and
"Underwriting Agreement and Distribution Plans" in the Statement of
Additional Information. The Fund's payment of a Rule 12b-1 fee may result in
long-term shareholders paying more than the economic equivalent of the
maximum sales charge permitted under the Conduct Rules of the National
Association of Securities Dealers, Inc. ("NASD").
    

   The maximum initial sales charge is reduced on purchases of specified
larger amounts of Class A shares and the value of shares owned in other
Pioneer mutual funds is taken into account in determining the applicable
initial sales charge. See "How to Buy Fund Shares." No sales charge is
applied to exchanges of shares of the Fund for shares of other publicly
available Pioneer mutual funds. See "How to Exchange Shares."

                                      2
<PAGE>

II. FINANCIAL HIGHLIGHTS

   
   The following information has been audited by Arthur Andersen LLP,
independent public accounts. Arthur Andersen LLP's report on the Fund's
financial statements as of September 30, 1996 appears in the Fund's Annual
Report which is incorporated by reference into the Statement of Additional
Information. The Annual Report includes more information about the Fund's
performance and is available free of charge by calling Shareholder Services
at 1-800-225-6292.
    

PIONEER MID-CAP FUND

   
Selected Data for a Class A Share Outstanding Throughout Each Period:
<TABLE>
<CAPTION>
                                                                                 For the Year Ended September 30,
                                                                       ------------------------------------------------------
                                                                          1996          1995         1994           1993
                                                                       -----------   -----------   -----------   ------------
<S>                                                                    <C>           <C>          <C>            <C>
Net asset value, beginning of period                                       $21.48        $19.92       $21.12         $18.03
Income (decrease) from investment operations--                      
Net investment income (loss)                                                $0.18         $0.24        $0.24          $0.28
Net realized and unrealized gain (loss) on investments                       1.47          2.70         0.32           3.72
Net increase (decrease) from investment operations                          $1.65         $2.94        $0.56          $4.00
Distribution to shareholders from--                                 
Net investment income                                                       (0.30)        (0.23)       (0.25)         (0.29)
Net realized capital gains                                                  (1.71)        (1.15)       (1.51)         (0.62)
Net increase (decrease) in net asset value                                 $(0.36)        $1.56       $(1.20)         $3.09
Net asset value, end of period                                             $21.12        $21.48       $19.92         $21.12
Total Return*                                                                8.61%        16.24%        2.62%         22.82%
Ratio of net operating expenses to average net assets                        0.90%+        0.85%+       0.86%          0.84%
Ratio of net investment income to average net assets                         0.85%+        1.18%+       1.19%          1.43%
Portfolio turnover rate                                                        75%           19%          15%            18%
Average commission rate paid(1)                                           $0.0527            --           --             --
Net assets, end of period (in thousands)                               $1,008,177    $1,082,154   $1,017,233     $1,019,059
Ratios assuming reduction for fees paid indirectly                  
Net operating expenses                                                       0.88%           --           --             --
Net investment income (loss)                                                 0.87%           --           --             --
</TABLE> 

<TABLE>
<CAPTION>
                                                          1992       1991        1990        1989        1988        1987
                                                        ---------   ---------  ---------   ---------   ---------   ----------
<S>                                                     <C>        <C>          <C>        <C>          <C>        <C>
Net asset value, beginning of period                      $16.16     $12.96       $17.80     $15.09       $18.52     $16.01
Income (decrease) from investment operations--
Net investment income (loss)                               $0.33      $0.41        $0.41      $0.42        $0.30      $0.28
Net realized and unrealized gain (loss) on
  investments                                               2.04       3.94        (3.56)      3.33        (1.91)      3.76
Net increase (decrease) from investment operations         $2.37      $4.35       $(3.15)     $3.75       $(1.61)     $4.04
Distribution to shareholders from--
Net investment income                                      (0.35)     (0.41)       (0.46)     (0.36)       (0.41)     (0.36)
Net realized capital gains                                 (0.15)     (0.74)       (1.23)     (0.68)       (1.41)     (1.17)
Net increase (decrease) in net asset value                 $1.87      $3.20       $(4.84)     $2.71       $(3.43)     $2.51
Net asset value, end of period                            $18.03     $16.16       $12.96     $17.80       $15.09     $18.52
Total Return*                                              15.05%     35.80%      (19.39%)    26.32%       (6.00%)    27.50%
Ratio of net operating expenses to average net assets       0.85%      0.74%        0.71%      0.72%        0.76%      0.68%
Ratio of net investment income to average net assets        1.85%      2.72%        2.58%      2.56%        2.15%      1.74%
Portfolio turnover rate                                       12%         5%          14%        16%          12%        23%
Average commission rate paid(1)                               --         --           --         --           --         --
Net assets, end of period (in thousands)                $779,631   $692,344     $562,343   $752,135     $616,953   $734,300
Ratios assuming reduction for fees paid indirectly
Net operating expenses                                        --         --           --         --           --         --
Net investment income (loss)                                  --         --           --         --           --         --
</TABLE>
    

Selected Data for a Class B Share Outstanding Throughout Each Period:(a)

<TABLE>
<CAPTION>
                                                                                                   For the period February 1, 1996
                                                                                                     through September 30, 1996
                                                                                                   ------------------------------
<S>                                                                                                <C>
Net asset value, beginning of period                                                                          $ 19.28
Increase (decrease) from investment operations--                                       
Net investment income (loss)                                                                                  $  0.12
Net realized and unrealized gain (loss) on investments                                                           1.78
Net increase (decrease) from investment operations                                                            $  1.90
Distribution to shareholders from--                                                    
Net investment income                                                                                           (0.16)
Net increase (decrease) in net asset value                                                                    $  1.74
Net asset value, end of period                                                                                $ 21.02
Total return*                                                                                                    9.88%
Ratio of net operating expenses to average net assets                                                            1.68%**+
Ratio of net investment income (loss) to average net assets                                                     (0.26)%**+
Portfolio turnover rate                                                                                            75%
Average commission rate paid(1)                                                                               $0.0527
Net assets, end of period (in thousands)                                                                      $ 4,939
Ratios assuming reduction for fees paid indirectly                                     
Net operating expenses                                                                                           1.66%**
Net investment income (loss)                                                                                    (0.24)%**
</TABLE>                                                              

   
(a) Class B shares were first publicly offered on February 1, 1996.

*   Assumes initial investment at net asset value at the beginning of each
    period, reinvestment of distributions, the complete redemption of the
    investment at net asset value at the end of each period and no sales
    charge. Total return would be reduced if sale charges were taken into
    account.

**  Annualized.

+   Ratio assuming no reduction for fees paid indirectly.

(1) Amount represents the rate of commissions paid per share on the Fund's
    exchange listed security transactions.
    

                                      3
<PAGE>

   
Selected Data for a Class C Share Outstanding Throughout Each Period:(a)
    


<TABLE>
<CAPTION>
                                                                  For the period February 1, 1996
                                                                    through September 30, 1996
                                                                  ------------------------------
<S>                                                               <C>
Net asset value, beginning of period                                         $ 19.28
Increase (decrease) from investment operations--
Net investment income (loss)                                                 $  0.03
Net realized and unrealized gain (loss) on investments                          1.93
Net increase (decrease) from investment operations                           $  1.96
Distribution to shareholders from--
Net investment income                                                          (0.12)
Net increase (decrease) in net asset value                                   $  1.84
Net asset value, end of period                                               $ 21.12
Total return*                                                                  10.18%
Ratio of net operating expenses to average net assets                           1.96%**+
Ratio of net investment income (loss) to average net assets                    (0.29)%**+
Portfolio turnover rate                                                           75%
Average commission rate paid(1)                                              $0.0527
Net assets, end of period (in thousands)                                     $   379
Ratios assuming reduction for fees paid indirectly
Net operating expenses                                                          1.93%**
Net investment income (loss)                                                   (0.26)%**
</TABLE>

   
(a) Class C shares were first publicly offered on February 1, 1996.

 *  Assumes initial investment at net asset value at the beginning of each
    period, reinvestment of distributions, the complete redemption of the
    investment at net asset value at the end of each period and no sales
    charge. Total return would be reduced if sale charges were taken into
    account.

**  Annualized.

 +  Ratio assuming no reduction for fees paid indirectly.

(1) Amount represents the rate of commissions paid per share on the Fund's
    exchange listed security transactions.
    

III. INVESTMENT OBJECTIVE AND POLICIES

   
   The investment objective of the Fund is to seek capital growth by
investing in a diversified portfolio of securities consisting primarily of
common stocks.
    

   The Fund is managed in accordance with the value philosophy of PMC. This
approach consists of developing a diversified portfolio of securities
consistent with the Fund's investment objective and selected primarily on the
basis of PMC's judgment that the securities have an underlying value, or
potential value, which exceeds their current prices. The analysis and
quantification of the economic worth, or basic value, of individual companies
reflects PMC's assessment of a company's assets and the company's prospects
for earnings growth over the next 1-1/2-to-3 years. PMC relies primarily on
the knowledge, experience and judgment of its own research staff, but also
receives and uses information from a variety of outside sources, including
brokerage firms, electronic data bases, specialized research firms and
technical journals.

   Under normal circumstances, at least 65% of the Fund's total assets are
invested in common stocks of companies with a market capitalization of
between $100 million and $5 billion determined at the time the security is
purchased. The Fund's investments in common stock include common stock
equivalents, that is, securities with common stock characteristics such as
convertible bonds and preferred stocks. While Mid-Cap Company securities may
offer a greater capital appreciation potential than investments in large-cap
company securities, they may also present greater risks. Mid-Cap Company
securities tend to be more sensitive to changes in earnings expectations and
have lower trading volumes than large-cap company securities and, as a
result, they may experience more abrupt and erratic price movements.

   
   A convertible security is a long-term debt obligation of the issuer
convertible at a stated exchange rate into common stock of the issuer.
Convertible securities rank senior to common stocks in an issuer's capital
structure and are consequently of higher quality and entail less risk than
the issuer's common stock. As with all debt securities, the market values of
convertible securities tend to increase when interest rates decline and,
conversely, tend to decline when interest rates increase. The Fund may invest
in investment grade debt securities, that is, securities rated "BBB" or
higher by Standard & Poor's Ratings Group or the equivalent rating of other
rating agencies. If the rating of a security falls below investment grade,
management will consider whatever action is appropriate consistent with the
Fund's investment objectives and policies. See the Statement of Additional
Information for a discussion of rating categories.

   While there is no requirement to do so, the Fund intends to limit
investments in foreign securities to no more than 10% of its assets and to
limit investments in securities of real estate investment trusts ("REITS") to
no more than 5% of assets. REITs are pooled investment vehicles which invest
primarily in income producing real estate or real estate related loans or
interests. Investing in REITs involves risks similar to those associated with
investing in mid-cap companies. Any current income produced by a security is
not a significant factor in the selection of investments. The Fund's
portfolio may include a number of securities which are owned by other equity
mutual funds managed by PMC. See "Portfolio Transactions" in the Statement of
Additional Information for more information.

   The Fund's fundamental investment objective and the fundamental investment
restrictions set forth in the Statement of Additional Information may not be
changed without shareholder approval. Certain other investment policies,
strategies and restrictions on investment are noted throughout the Prospectus
and are set forth in the Statement of Additional Information. These
non-fundamental investment policies, strategies and restrictions may be
changed at any time by a vote of the Board of Trustees.
    


                                      4
<PAGE>

   It is the policy of the Fund not to engage in trading for short-term
profits. Nevertheless, changes in the portfolio will be made promptly when
determined to be advisable by reason of developments not foreseen at the time
of the initial investment decision, and usually without reference to the
length of time a security has been held. Accordingly, portfolio turnover rate
is not considered a limiting factor in the execution of investment decisions.

   The Fund intends to be substantially fully invested at all times. If
suitable investments are not immediately available, the Fund may hold a
portion of its investments in cash and cash-equivalents. For temporary
defensive purposes, however, the Fund may invest up to 100% of its assets in
short-term investments. The Fund will assume a defensive posture only when
political and economic factors affect common stock markets to such an extent
that PMC believes there to be extraordinary risks in being substantially
invested in common stocks. A short-term investment is considered to be an
investment with a maturity of one year or less from the date of issuance.
Short-term investments will not normally represent more than 10% of the
Fund's assets.

   The Fund may enter into repurchase agreements, not to exceed seven days,
with broker-dealers and any member bank of the Federal Reserve System. The
Board of Trustees of the Fund will review and monitor the creditworthiness of
any institution which enters into a repurchase agreement with the Fund. Such
repurchase agreements will be fully collateralized with United States
("U.S.") Treasury and/or agency obligations with a market value of not less
than 100% of the obligations, valued daily. Collateral will be held by the
Fund's custodian in a segregated, safekeeping account for the benefit of the
Fund. Repurchase agreements afford the Fund an opportunity to earn income on
temporarily available cash at low risk. In the event that a repurchase
agreement is not fulfilled, the Fund could suffer a loss to the extent that
the value of the collateral falls below the repurchase price.

   The Fund may invest in securities issued by companies located in foreign
countries. Investing in securities of foreign companies involves certain
considerations and risks which are not typically associated with investing in
securities of domestic companies. Foreign companies are not subject to
uniform accounting, auditing and financial standards and requirements
comparable to those applicable to U.S. companies. There may also be less
publicly available information about foreign companies compared to reports
and ratings published about U.S. companies. In addition, foreign securities
markets have substantially less volume than domestic markets and securities
of some foreign companies are less liquid and more volatile than securities
of comparable U.S. companies. There may also be less government supervision
and regulation of foreign securities exchanges, brokers and listed companies
than exists in the United States. Dividends or interest paid by foreign
issuers may be subject to withholding and other foreign taxes which will
decrease the net return on such investments as compared to dividends or
interest paid to the Fund by domestic companies. Finally, there may be the
possibility of expropriations, confiscatory taxation, political, economic or
social instability or diplomatic developments which could adversely affect
assets of the Fund held in foreign countries.

   The value of foreign securities may also be adversely affected by
fluctuations in the relative rates of exchange between the currencies of
different nations and by exchange control regulations. For example, the value
of a foreign security held by the Fund as measured in U.S. dollars will
decrease if the foreign currency in which the security is denominated
declines in value against the U.S. dollar. In such event, this will cause an
overall decline in the Fund's net asset value and may also reduce net
investment income and capital gains, if any, to be distributed in U.S.
dollars to shareholders of the Fund.

IV. MANAGEMENT OF THE FUND

   The Board of Trustees of the Fund has overall responsibility for
management and supervision of the Fund. There are currently eight Trustees,
six of whom are not "interested persons" of the Fund as defined in the
Investment Company Act of 1940, as amended (the "1940 Act"). The Board meets
at least quarterly. By virtue of the functions performed by Pioneering
Management Corporation as investment adviser, the Fund requires no employees
other than its executive officers, all of whom receive their compensation
from PMC or other sources. The Statement of Additional Information contains
the names and general business and professional background of each Trustee
and executive officer of the Fund.

   Investment advisory services are provided to the Fund by PMC pursuant to a
management contract between PMC and the Fund. 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 a wholly-owned subsidiary of The Pioneer Group, Inc.
("PGI"), a publicly-traded Delaware corporation. Pioneer Funds Distributor,
Inc. ("PFD"), an indirect wholly-owned subsidiary of PGI, is the principal
underwriter of the Fund.

   
   John F. Cogan, Jr., Chairman and President of the Fund, Chairman of PFD,
President and a Director of PGI and Chairman and a Director of PMC, owned
approximately 14% of the outstanding capital stock of PGI as of the date of
this Prospectus.

   Mr. David Tripple, President and Chief Investment Officer of PMC and
Executive Vice President of the Fund, has general responsibility for PMC's
investment operations and chairs a committee of PMC's domestic equity
managers which reviews PMC's research and portfolio operations, including
those of the Fund. Mr. Tripple joined PMC in 1974.

   The Fund is covered by a team of managers and analysts which does research
for and oversees the management of several funds with similar investment
objectives. Members of the team meet regularly to discuss holdings,
prospective investments and portfolio composition. Day-to-day management of
the Fund has been the responsibility of Mr. Steven C. Carhart, a Vice
President of PMC, since July 1996. Mr. Carhart joined PMC in 1996 and has 5
years of experience in research and 9 years of experience as a portfolio
manager.

   In addition to the Fund, PMC also manages and serves as the investment
adviser for other mutual funds and is an
    


                                      5
<PAGE>

   
investment adviser to certain other institutional accounts. PMC's and PFD's
executive offices are located at 60 State Street, Boston, Massachusetts
02109. In an effort to avoid conflicts of interest with the Fund, the Fund
and PMC have adopted a Code of Ethics that is designed to maintain a high
standard of personal conduct by directing that all personnel defer to the
interests of the Fund and its shareholders in making personal securities
transactions.

   Under the terms of its contract with the Fund, PMC serves as the Fund's
manager and investment adviser subject to the supervision of the Fund's
Trustees. PMC pays all the ordinary operating expenses, including executive
salaries and the rental of office space relating to its services for the Fund
with the exception of the following which are to be paid by the Fund: (a)
taxes and other governmental charges, if any; (b) interest on borrowed money,
if any; (c) legal fees and expenses; (d) auditing fees; (e) insurance
premiums; (f) dues and fees for membership in trade associations; (g) fees
and expenses of registering and maintaining registrations by the Fund of its
shares with regulatory agencies, individual states, territories and foreign
jurisdictions and of preparing reports to government agencies; (h) fees and
expenses of Trustees not affiliated with or interested persons of PMC; (i)
fees and expenses of the custodian, dividend disbursing agent, transfer agent
and registrar; (j) issue and transfer taxes chargeable to the Fund in
connection with securities transactions to which the Fund is a party; (k)
costs of reports to shareholders, shareholders' meetings and Trustees'
meetings; (l) the cost of certificates representing shares of the Fund; (m)
fund accounting, pricing and appraisal charges and related overhead; and (n)
distribution fees in accordance with Rule 12b-1. The Fund also pays all
brokerage commissions and any taxes or other charges in connection with its
portfolio transactions.
    

   Orders for the Fund's portfolio securities transactions are placed by PMC,
which strives to obtain the best price and execution for each transaction. In
circumstances in which two or more broker-dealers are in a position to offer
comparable prices and execution, consideration may be given to whether the
broker-dealer provides investment research or brokerage services or sells
shares of the Fund or other Pioneer mutual funds. See the Statement of
Additional Information for a further description of PMC's brokerage
allocation practices.

Management Fee

   As compensation for its management services and certain expenses which PMC
incurs on behalf of the Fund, the Fund pays PMC a management fee that is
comprised of two components. The first component is a basic fee equal to
0.625% per annum of the Fund's average daily net assets (the "Basic Fee").
The second component is a performance fee adjustment.

   
Computing the Performance Fee Adjustment. The Basic Fee is subject to an
upward or downward adjustment, depending on whether, and to what extent, the
investment performance of the Class A shares of the Fund for the performance
period exceeds, or is exceeded by, the record of the Standard and Poors
Mid-Cap 400 Index of mid-capitalization stocks (the "Index") over the same
period. The performance period consists of the current month and the prior 35
months ("performance period"). Each percentage point of difference (up to a
maximum of +\- 10) is multiplied by a performance adjustment rate of 0.02%.
Thus, the maximum annualized adjustment rate is +\- 0.20%. This performance
comparison is made at the end of each month. One twelfth (1/12) of this rate
is then applied to the Fund's average net assets for the entire performance
period, giving a dollar amount that will be added to (or subtracted from) the
Basic Fee.

   The Fund's performance is calculated based on the net asset value per
share of its Class A shares. For purposes of calculating the performance
adjustment, any dividends or capital gains distributions paid by the Fund are
treated as if reinvested in the Fund's Class A shares at the net asset value
per share as of the record date for payment. The record for the Index is
based on change in value and is adjusted for any cash distributions from the
companies whose securities comprise the Index.

   Because the adjustment to the Basic Fee is based on the comparative
performance of the Class A shares 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 record 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.

   The Basic Fee is computed daily, the performance fee adjustment is
calculated once per month and the entire management fee, allocated to each
Class of shares in proportion to its average daily net assets, is normally
paid monthly.
    

V. FUND SHARE ALTERNATIVES

   The Fund continuously offers three Classes of shares designated as Class
A, Class B and Class C shares, as described more fully in "How to Buy Fund
Shares." If you do not specify in your instructions to the Fund which Class
of shares you wish to purchase, exchange or redeem, the Fund will assume that
your instructions apply to Class A shares.

   
   Class A Shares. If you invest less than $1 million in Class A shares, you
will pay an initial sales charge. Certain purchases may qualify for reduced
initial sales charges. If you invest $1 million or more in Class A shares, no
sales charge will be imposed at the time of purchase; however, shares
redeemed within 12 months of purchase may be subject to a contingent deferred
sales charge ("CDSC"). Class A shares are subject to distribution and service
fees at a combined annual rate of up to 0.25% of the Fund's average daily net
assets attributable to Class A shares.

   Class B Shares. If you plan to invest up to $250,000, Class B shares are
available to you. Class B shares are sold without an initial sales charge,
but are subject to a CDSC of up to 4% if redeemed within six years. Class B
shares are subject to distribution and service fees at a combined annual rate
of 1% of the Fund's average daily net assets attributable to Class B shares.
Your entire investment in Class B shares is available to work for you from
the time you make your investment, but the higher distribution fee paid by
Class B shares will cause your Class B shares (until conversion) to have a
higher expense ratio and to pay lower dividends, to the extent dividends are
paid, than Class A shares. Class B
    


                                      6
<PAGE>

shares will automatically convert to Class A shares, based on relative net
asset value, eight years after the initial purchase.

   
   Class C Shares. Class C shares are sold without an initial sales charge,
but are subject to a 1% CDSC if they are redeemed within the first year after
purchase. Class C shares are subject to distribution and service fees at a
combined annual rate of up to 1% of the Fund's average daily net assets
attributable to Class C shares. Your entire investment in Class C shares is
available to work for you from the time you make your investment, but the
higher distribution fee paid by Class C shares will cause your Class C shares
to have a higher expense ratio and to pay lower dividends, to the extent
dividends are paid, than Class A shares. Class C shares have no conversion
feature.
    

   Selecting a Class of Shares. The decision as to which Class to purchase
depends on the amount you invest, the intended length of the investment and
your personal situation. If you are making an investment that qualifies for
reduced sales charges, you might consider Class A shares. If you prefer not
to pay an initial sales charge on an investment of $250,000 or less and you
plan to hold the investment for at least six years, you might consider Class
B shares. If you prefer not to pay an initial sales charge and you plan to
hold your investment for one to eight years, you may prefer Class C shares.

   Investment dealers or their representatives may receive different
compensation depending on which Class of shares they sell. Shares may be
exchanged only for shares of the same Class of another Pioneer mutual fund
and shares acquired in the exchange will continue to be subject to any CDSC
applicable to the shares of the Fund originally purchased. Shares sold
outside the U.S. to persons who are not U.S. citizens may be subject to
different sales charges, CDSC's and dealer compensation arrangements in
accordance with local laws and business practices.

VI. SHARE PRICE

   Shares of the Fund are sold at the public offering price, which is the net
asset value per share, plus the applicable sales charge. Net asset value per
share of a Class of the Fund is determined by dividing the value of its
assets, less liabilities attributable to that Class, by the number of shares
of that Class outstanding. The net asset value is computed once daily, on
each day the Exchange is open, as of the close of regular trading on the
Exchange.

   Securities are valued at the last sale price on the principal exchange or
market where they are traded. Securities which have not traded on the date of
valuation or securities for which sales prices are not generally reported are
valued at the mean between the current bid and asked prices. Securities
quoted in foreign currencies are converted to U.S. dollars utilizing foreign
exchange rates employed by the Fund's independent pricing services.
Generally, trading in foreign securities is substantially completed each day
at various times prior to the close of the Exchange. The values of such
securities used in computing the net asset value of the Fund's shares are
determined as of such times. Foreign currency exchange rates are also
generally determined prior to the close of the Exchange. Occasionally, events
which affect the values of such securities and such exchange rates may occur
between the times at which they are determined and the close of the Exchange
and will therefore not be reflected in the computation of the Fund's net
asset value. If events materially affecting the value of such securities
occur during such period, then these securities are valued at their fair
value as determined in good faith by the Trustees. All assets of the Fund for
which there is no other readily available valuation method are valued at
their fair value as determined in good faith by the Trustees.

VII. HOW TO BUY FUND SHARES

   You may buy Fund shares from any securities broker-dealer which has a
sales agreement with PFD. If you do not have a securities broker-dealer,
please call 1-800-225-6292. Shares will be purchased at the public offering
price, that is, the net asset value per share plus any applicable sales
charge, next computed after receipt of a purchase order, except as set forth
below.

   The minimum initial investment is $1,000 for Class A, B and C shares,
except as specified below. The minimum initial investment is $50 for Class A
accounts being established to utilize monthly bank drafts, government
allotments, payroll deduction and other similar automatic investment plans.
Separate minimum investment requirements apply to retirement plans and to
telephone and wire orders placed by broker-dealers; and no sales charge or
minimum investment requirements apply to the reinvestment of dividends or
capital gains distributions. The minimum subsequent investment is $50 for
Class A shares and $500 for Class B and C shares except that the subsequent
minimum investment amount for Class B and C share accounts may be as little
as $50 if an automatic investment plan (see "Automatic Investment Plans") is
established.

   
   Telephone Purchases. Your account is automatically authorized to have the
telephone purchase privilege unless you indicate otherwise on your Account
Application or by writing to Pioneering Services Corporation ("PSC"). The
telephone purchase option may be used to purchase additional shares for an
existing fund account; it may not be used to establish a new account. Proper
account identification will be required for each telephone purchase. A
maximum of $25,000 per account may be purchased by telephone each day. The
telephone purchase privilege is available to Individual Retirement Accounts
("IRAs") but may not be available to other types of retirement plan accounts.
Call PSC for more information.
    

   You are strongly urged to consult with your financial representative prior
to requesting a telephone purchase. To purchase shares by telephone, you must
establish your bank account of record by completing the appropriate section
of your Account Application or an Account Options Form. PSC will
electronically debit the amount of each purchase from this predesignated bank
account. Telephone purchases may not be made for 30 days after the
establishment of your bank of record or any change to your bank information.

   Telephone purchases will be priced at the net asset value plus any
applicable sales charge next determined after PSC's

                                      7
<PAGE>

receipt of a telephone purchase instruction and receipt of good funds
(usually three days after the purchase instruction). You may always elect to
deliver purchases to PSC by mail. See "Telephone Transactions and Related
Liabilities" for additional information.

Class A Shares

   
   You may buy Class A shares at the public offering price, including a sales
charge, as follows:
    

                                        Sales Charge as a % of      Dealer
                                       ------------------------   Allowance
                                                        Net       as a % of
                                        Offering      Amount       Offering
         Amount of Purchase              Price       Invested       Price
- ------------------------------------   ----------  -----------    -----------

Less than $50,000                         5.75%        6.10%         5.00%
$50,000 but less than $100,000            4.50         4.71          4.00
$100,000 but less than $250,000           3.50         3.63          3.00
$250,000 but less than $500,000           2.50         2.56          2.00
$500,000 but less than $1,000,000         2.00         2.04          1.75
$1,000,000 or more                         -0-          -0-       see below

   
   The schedule of sales charges above is applicable to purchases of Class A
shares of the Fund by (i) an individual, (ii) an individual and his or her
spouse and children under the age of 21 and (iii) a trustee or other
fiduciary of a trust estate or fiduciary account or related trusts or
accounts including pension, profit-sharing and other employee benefit trusts
qualified under Section 401 or 408 of the Internal Revenue Code of 1986, as
amended (the "Code"), although more than one beneficiary is involved. The
sales charges applicable to a current purchase of Class A shares of the Fund
by a person listed above is determined by adding the value of shares to be
purchased to the aggregate value (at the then current offering price) of
shares of any of the other Pioneer mutual funds previously purchased and then
owned, provided PFD is notified by such person or his or her broker-dealer
each time a purchase is made which would qualify. Pioneer mutual funds
include all mutual funds for which PFD serves as principal underwriter. At
the sole discretion of PFD, holdings of funds domiciled outside the U.S., but
which are managed by affiliates of PMC, may be included for this purpose.

   No sales charge is payable at the time of purchase on investments of $1
million or more, or for purchases by certain group plans (described below)
subject to a CDSC of 1% which may be imposed in the event of a redemption of
Class A shares within 12 months of purchase. See "How to Sell Fund Shares"
below. PFD may, in its discretion, pay a commission to broker-dealers who
initiate and are responsible for such purchases as follows: 1% on the first
$5 million invested; 0.50% on the next $45 million invested; and 0.25% on the
excess over $50 million invested. These commissions shall not be payable if
the purchaser is affiliated with the broker-dealer or if the purchase
represents the reinvestment of a redemption made during the previous 12
calendar months. Broker-dealers who receive a commission in connection with
Class A share purchases at net asset value by 401(a) or 401(k) retirement
plans with 1,000 or more eligible participants or with at least $10 million
in plan assets will be required to return any commissions paid or a pro rata
portion thereof if the retirement plan redeems its shares within 12 months of
purchase. See also "How to Sell Fund Shares." In connection with PGI's
acquisition of Mutual of Omaha Fund Management Company and contingent upon
the achievement of certain sales objectives, PFD may pay to Mutual of Omaha
Investor Services, Inc. 50% of PFD's retention of any sales commission on
sales of the Fund's shares through such dealer. From time to time, PFD may
elect to reallow the entire initial sales charge to participating dealers for
all Class A sales with respect to which orders are placed during a particular
period. Dealers to whom substantially the entire sales charge is reallowed
may be deemed to be underwriters under the federal securities laws.

   Qualifying for a Reduced Sales Charge. Class A shares of the Fund may be
sold at a reduced or eliminated sales charge to certain group plans ("Group
Plans") under which a sponsoring organization makes recommendations to,
permits group solicitation of, or otherwise facilitates purchases by, its
employees, members or participants. Class A shares of the Fund may be sold at
net asset value per share without a sales charge to 401(k) retirement plans
with 100 or more participants or at least $500,000 in plan assets.
Information about such arrangements is available from PFD.

   Class A shares of the Fund may also be sold at net asset value per share
without a sales charge to: (a) current or former Trustees and officers of the
Fund and partners and employees of its legal counsel; (b) current or former
directors, officers, employees or sales representatives of PGI, its
subsidiaries; (c) current or former directors, officers, employees or sales
representatives of any subadviser or predecessor investment adviser to any
investment company for which PMC serves as an investment adviser, and the
subsidiaries or affiliates of such persons; (d) current or former officers,
partners, employees or registered representatives of broker-dealers which
have entered into sales agreements with PFD; (e) members of the immediate
families of any of the persons above; (f) any trust, custodian, pension,
profit-sharing or other benefit plan of the foregoing persons; (g) insurance
company separate accounts; (h) certain "wrap accounts" for the benefit of
clients of financial planners adhering to standards established by PFD; (i)
other funds and accounts for which PMC or any of its affiliates serves as
investment adviser or manager; and (j) certain unit investment trusts. Shares
so purchased are purchased for investment purposes and may not be resold
except through redemption or repurchase by or on behalf of the Fund. The
availability of this privilege is conditioned on the receipt by PFD of
written notification of eligibility.

   Class A shares of a Fund may be sold at net asset value per share without
a sales charge to Optional Retirement Program (the "Program") participants if
(i) the employer has authorized a limited number of investment company
providers for the Program, (ii) all authorized investment company providers
offer their shares to Program participants at net asset value, (iii) the
employer has agreed in writing to actively promote the authorized investment
providers to Program participants and (iv) the Program provides for a
matching contribu
    


                                      8
<PAGE>


   
tion for each participant contribution. Class A shares of the Fund may also
be sold at net asset value without a sales charge in connection with certain
reorganization, liquidation or acquisition transactions involving other
investment companies or personal holding companies.

   Reduced sales charges are available for purchases of $50,000 or more of
Class A shares (excluding any reinvestments of dividends and capital gains
distributions) made within a 13-month period pursuant to a Letter of Intent
("LOI") which may be established by completing the Letter of Intent section
of the Account Application. The reduced sales charge will be the charge that
would be applicable to the purchase of the specified amount of Class A shares
as if the shares had all been purchased at the same time. For example, a
person who signs an LOI agreeing to purchase $50,000 worth of Class A shares
would be charged at the 4.50% sales charge rate with respect to all purchases
during the 13-month period of the LOI. A purchase not made pursuant to an LOI
may be included if the LOI is submitted to PSC within 90 days of such
purchase. You may also obtain the reduced sales charge by including the value
(at current offering price) of all your Class A shares in the Fund and all
other Pioneer mutual funds held of record as of the date of your LOI in the
amount used to determine the applicable sales charge for the Class A shares
to be purchased under the LOI. Five percent of your total intended purchase
amount will be held in escrow by PSC, registered in your name, until the
terms of the LOI are fulfilled.

   You are not obligated to purchase the amount specified in your LOI. If,
however, the amount actually purchased during the 13-month period is more or
less than that indicated in your LOI, an adjustment in the sales charge will
be made. If your total purchases minus redemptions during the period are less
than the amount specified in your LOI, you will be required to pay the
difference between the sales charges actually paid and the sales charges that
would otherwise have been applied. Your payment must be made to PFD within 20
days after PFD or your dealer sends you a written request. If PFD does not
receive the required payment, PFD will direct PSC to liquidate sufficient
shares from your escrow account to cover the amount due and release any
excess amount to you. If your total purchases minus redemptions exceed the
amount specified by the LOI and are in an amount that qualifies for a further
quantity discount, sales charges for transactions made in connection with
your LOI will be recalculated as of the date your LOI expires to effect the
lower rate. Any difference in the sales charge will be delivered to you in
cash or invested in additional Class A shares at the lower sales charge. In
this event, your dealer agrees to return any excess commissions paid. See the
Statement of Additional Information for more information.

   Investors who are clients of a broker-dealer with a current sales
agreement with PFD may purchase Class A shares of the Fund at net asset
value, without a sales charge, to the extent that the purchase price is paid
out of proceeds from one or more redemptions by the investor of shares of
certain other mutual funds. In order for a purchase to qualify for this
privilege, the investor must document to the broker-dealer that the
redemption occurred within 60 days immediately preceding the purchase of
Class A shares; that the client paid a sales charge on the original purchase
of the shares redeemed; and that the mutual fund whose shares were redeemed
also offers net asset value purchases to redeeming shareholders of any of the
Pioneer mutual funds. Further details may be obtained from PFD.
    

Class B Shares

   
   You may buy Class B shares at the net asset value per share next computed
after receipt of a purchase order, without the imposition of an initial sales
charge; however, Class B shares redeemed within six years of purchase will be
subject to a CDSC at the rates shown in the table below. The charge will be
assessed on the amount equal to the lesser of the current market value or the
original purchase cost of the shares being redeemed. No CDSC will be imposed
on increases in account value above the initial purchase price, including
shares derived from the reinvestment of dividends or capital gains
distributions.
    

   The amount of the CDSC, if any, will vary depending on the number of years
from the time of purchase until the time of redemption of Class B shares. For
the purpose of determining the number of years from the time of any purchase,
all payments during a quarter will be aggregated and deemed to have been made
on the first day of that quarter. In processing redemptions of Class B
shares, the Fund will first redeem shares not subject to any CDSC, and then
shares held longest during the six-year period. As a result, you will pay the
lowest possible CDSC.

   
   The CDSC for Class B shares subject to a CDSC upon redemption will be
determined as follows:
    


Year Since                          CDSC as a Percentage of Dollar
 Purchase                               Amount Subject to CDSC
- ----------------------------   ---------------------------------------

First                                             4.0%
Second                                            4.0%
Third                                             3.0%
Fourth                                            3.0%
Fifth                                             2.0%
Sixth                                             1.0%
Seventh and thereafter                            none

   Proceeds from the CDSC are paid to PFD and are used in whole or in part to
defray PFD's expenses related to providing distribution-related services to
the Fund in connection with the sale of Class B shares, including the payment
of compensation to broker-dealers.

   Class B shares will automatically convert into Class A shares at the end
of the calendar quarter that is eight years after the purchase date, except
as noted below. Class B shares acquired by exchange from Class B shares of
another Pioneer fund will convert into Class A shares based on the date of
the initial purchase and the applicable CDSC. Class B shares acquired through
reinvestment of distributions will convert into Class A shares based on the
date of the initial purchase to which such shares relate. For this purpose,
Class B shares acquired through reinvestment of distributions will be
attributed to particular purchases of Class B shares in accordance with such
procedures as the Trustees may determine from time to time. The conversion of
Class B shares to Class A shares is subject to the continuing avail-

                                      9
<PAGE>

   
ability of a ruling from the Internal Revenue Service ("IRS") that such
conversions will not constitute taxable events for federal tax purposes.
There can be no assurance that such ruling will continue to be in effect at
the time any particular conversion would normally occur. The conversion of
Class B shares to Class A shares will not occur if such ruling is not
available and, therefore, Class B shares would continue to be subject to
higher expenses than Class A shares for an indeterminate period.
    

Class C Shares

   
   You may buy Class C shares at net asset value per share next computed
after receipt of a purchase order, without the imposition of an initial sales
charge; however, Class C shares redeemed within one year of purchase will be
subject to a CDSC of 1%. The charge will be assessed on the amount equal to
the lesser of the current market value or the original purchase cost of the
shares being redeemed. No CDSC will be imposed on increases in account value
above the initial purchase price, including shares derived from the
reinvestment of dividends or capital gains distributions. Class C shares do
not convert to any other Class of Fund shares.
    

   For the purpose of determining the time of any purchase, all payments
during a quarter will be aggregated and deemed to have been made on the first
day of that quarter. In processing redemptions of Class C shares, the Fund
will first redeem shares not subject to any CDSC, and then shares held for
the shortest period of time during the one-year period. As a result, you will
pay the lowest possible CDSC.

   Proceeds from the CDSC are paid to PFD and are used in whole or in part to
defray PFD's expenses related to providing distribution-related services to
the Fund in connection with the sale of Class C shares, including the payment
of compensation to broker-dealers.

   Waiver or Reduction of Contingent Deferred Sales Charge. The CDSC on Class
B shares may be waived or reduced for non-retirement accounts if: (a) the
redemption results from the death of all registered owners of an account (in
the case of UGMAs, UTMAs and trust accounts, waiver applies upon the death of
all beneficial owners) or a total and permanent disability (as defined in
Section 72 of the Code) of all registered owners occurring after the purchase
of the shares being redeemed or (b) the redemption is made in connection with
limited automatic redemptions as set forth in "Systematic Withdrawal Plans"
(limited in any year to 10% of the value of the account in the Fund at the
time the withdrawal plan is established).

   
   The CDSC on Class B shares may be waived or reduced for retirement plan
accounts if: (a) the redemption results from the death or a total and
permanent disability (as defined in Section 72 of the Code) occurring after
the purchase of the shares being redeemed of a shareholder or participant in
an employer-sponsored retirement plan; (b) the distribution is to a
participant in an IRA, 403(b) or employer-sponsored retirement plan, is part
of a series of substantially equal payments made over the life expectancy of
the participant or the joint life expectancy of the participant and his or
her beneficiary or as scheduled periodic payments to a participant (limited
in any year to 10% of the value of the participant's account at the time the
distribution amount is established; a required minimum distribution due to
the participant's attainment of age 70-1/2 may exceed the 10% limit only if
the distribution amount is based on plan assets held by Pioneer); (c) the
distribution is from a 401(a) or 401(k) retirement plan and is a return of
excess employee deferrals or employee contributions or a qualifying hardship
distribution as defined by the Code or results from a termination of
employment (limited with respect to a termination to 10% per year of the
value of the plan's assets in the Fund as of the later of the prior December
31 or the date the account was established unless the plan's assets are being
rolled over to or reinvested in the same class of shares of a Pioneer mutual
fund subject to the CDSC of the shares originally held); (d) the distribution
is from an IRA, 403(b) or employer-sponsored retirement plan and is to be
rolled over to or reinvested in the same class of shares in a Pioneer mutual
fund and which will be subject to the applicable CDSC upon redemption; (e)
the distribution is in the form of a loan to a participant in a plan which
permits loans (each repayment of the loan will constitute a new sale which
will be subject to the applicable CDSC upon redemption); or (f) the
distribution is from a qualified defined contribution plan and represents a
participant's directed transfer (provided that this privilege has been
preauthorized through a prior agreement with PFD regarding participant
directed transfers).

   The CDSC on Class C shares and on any Class A shares subject to a CDSC may
be waived or reduced as follows: (a) for automatic redemptions as described
in "Systematic Withdrawal Plans" (limited to 10% of the value of the account
subject to the CDSC); (b) if the redemption results from the death or a total
and permanent disability (as defined in Section 72 of the Code) occurring
after the purchase of the shares being redeemed of a shareowner or
participant in an employer-sponsored retirement plan; (c) if the
distribution is part of a series of substantially equal payments made over
the life expectancy of the participant or the joint life expectancy of the
participant and his or her beneficiary; or (d) if the distribution is to a
participant in an employer-sponsored retirement plan and is (i) a return of
excess employee deferrals or contributions, (ii) a qualifying hardship
distribution as defined by the Code, (iii) from a termination of employment,
(iv) in the form of a loan to a participant in a plan which permits loans, or
(v) from a qualified defined contribution plan and represents a participant's
directed transfer (provided that this privilege has been preauthorized
through a prior agreement with PFD regarding participant directed transfers).

   The CDSC on Class B and Class C shares and on any Class A shares subject
to a CDSC may be waived or reduced for either non-retirement or retirement
plan accounts if: (a) the redemption is made by any state, county, or city,
or any instrumentality, department, authority, or agency thereof, which is
prohibited by applicable laws from paying a CDSC in connection with the
acquisition of shares of any registered investment management company; or (b)
the redemption is made pursuant to the Fund's right to liquidate or
involuntarily redeem shares in a shareholder's account. The CDSC on any
shares subject to a CDSC will not be applicable if the selling broker-dealer
elects, with PFD's approval, to waive receipt of the commission normally paid
at the time of the sale.
    


                                      10
<PAGE>

   
   Broker-Dealers. An order for any Class of Fund shares received by PFD from
a broker-dealer prior to the close of regular trading on the Exchange is
confirmed at the price appropriate for that Class as determined at the close
of regular trading on the Exchange on the day the order is received, provided
the order is received by PFD prior to PFD's close of business (usually, 5:30
p.m. Eastern Time). It is the responsibility of broker-dealers to transmit
orders so that they will be received by PFD prior to its close of business.
PFD or its affiliates may provide additional compensation to certain dealers
or such dealers' affiliates based on certain objective criteria established
from time to time by PFD. All such payments are made out of PFD's or the
affiliate's own assets. These payments will not change the price an investor
will pay for shares or the amount that the Fund will receive from such sale.
    

   General. The Fund reserves the right in its sole discretion to withdraw
all or any part of the offering of shares when, in the judgment of the Fund's
management, such withdrawal is in the best interest of the Fund. An order to
purchase shares is not binding on, and may be rejected by, PFD until it has
been confirmed in writing by PFD and payment has been received.

VIII. HOW TO SELL FUND SHARES

   You can arrange to sell (redeem) Fund shares on any day the Exchange is
open by selling either some or all of your shares to the Fund.

   You may sell your shares either through your broker-dealer or directly to
the Fund. Please note the following:

   
   (bullet) If you are selling shares from a retirement account, other than
            an IRA, you must make your request in writing (except for
            exchanges to other Pioneer mutual funds which can be requested by
            phone or in writing). Call 1-800-622-0176 for more information.

   (bullet) If you are selling shares from a non-retirement account or an
            IRA, you may use any of the methods described below.
    

   Your shares will be sold at the share price next calculated after your
order is received in good order less any applicable CDSC. Sale proceeds
generally will be sent to you in cash, normally within seven days after your
order is received in good order. The Fund reserves the right to withhold
payment of the sale proceeds until checks received by the Fund in payment for
the shares being sold have cleared, which may take up to 15 calendar days
from the purchase date.

   
   In Writing. You may sell your shares by delivering a written request,
signed by all registered owners, in good order to PSC, however, you must use
a written request, including a signature guarantee, to sell your shares if
any of the following applies:
    

   (bullet) you wish to sell over $50,000 worth of shares,

   (bullet) your account registration or address has changed within the last
            30 days

   (bullet) the check is not being mailed to the address on your account
            (address of record),

   (bullet) the check is not being made out to the account owners, or

   
   (bullet) the sale proceeds are being transferred to a Pioneer mutual fund
            account with a different registration.

   Your request should include your name, the Fund's name, your Fund account
number, the Class of shares to be redeemed, the dollar amount or number of
shares to be redeemed, and any other applicable requirements as described
below. Unless instructed otherwise, PSC will send the proceeds of the sale to
the address of record. Fiduciaries and corporations are required to submit
additional documents. For more information, contact PSC at 1-800-225-6292.

   Written requests will not be processed until they are received in good
order by PSC. Good order means that there are no outstanding claims or
requests to hold redemptions on the account, and any certificates are
endorsed by the record owner(s) exactly as the shares are registered and, if
required, the signature(s) are guaranteed by an eligible guarantor. You
should be able to obtain a signature guarantee from a bank, broker, dealer,
credit union (if authorized under state law), securities exchange or
association, clearing agency or savings association. A notary public cannot
provide a signature guarantee. Signature guarantees are not accepted by
facsimile ("fax"). For additional information about the necessary
documentation for redemption by mail, please contact PSC at 1-800-225-6292.

   By Telephone or by Fax. Your account is automatically authorized to have
the telephone redemption privilege unless you indicate otherwise on your
Account Application or by writing to PSC. Proper account identification will
be required for each telephone redemption. A maximum of $50,000 per account
per day may be redeemed by telephone or fax and the proceeds may be received
by check or by bank wire or electronic funds transfer. To receive the
proceeds by check: the check must be made payable exactly as the account is
registered and the check must be sent to the address of record which must not
have changed in the last 30 days. To receive the proceeds by bank wire or by
electronic funds transfer: the proceeds must be sent to the bank wire address
of record which must have been properly predesignated either on your Account
Application or on an Account Options Form and which must not have changed in
the last 30 days. To redeem by fax, send your redemption request to 1-800-
225-4240. You may always elect to deliver redemption instructions to PSC by
mail. See "Telephone Transactions and Related Liabilities" below. Telephone
and fax redemptions will be priced as described above. You are strongly urged
to consult with your financial representative prior to requesting a telephone
redemption.
    

   Selling Shares Through Your Broker-Dealer. The Fund has authorized PFD to
act as its agent in the repurchase of shares of the Fund from qualified
broker-dealers and reserves the right to terminate this procedure at any
time. Your broker-dealer must receive your request before the close of
business on the Exchange and transmit it to PFD before PFD's close of
business to receive that day's redemption price. Your broker-dealer is
responsible for providing all necessary documentation to PFD and may charge
you for its services.

   Small Accounts. The minimum account value is $500. If you hold shares of
the Fund in an account with a net asset

                                      11
<PAGE>

value of less than the minimum required amount due to redemptions or
exchanges, the Fund may redeem the shares held in this account at net asset
value if you have not increased the net asset value of the account to at
least the minimum required amount within six months of notice by the Fund to
you of the Fund's intention to redeem the shares.

   
   CDSC on Class A Shares. Purchases of Class A shares of $1 million or more,
or by participants in a Group Plan which were not subject to an initial sales
charge, may be subject to a CDSC upon redemption. A CDSC is payable to PFD on
these investments in the event of a share redemption within 12 months
following the share purchase, at the rate of 1% of the lesser of the value of
the shares redeemed (exclusive of reinvested dividend and capital gain
distributions) or the total cost of such shares. Shares subject to the CDSC
which are exchanged into another Pioneer fund will continue to be subject to
the CDSC until the original 12-month period expires. However, no CDSC is
payable with respect to purchases of Class A shares by 401(a) or 401(k)
retirement plans with 1,000 or more eligible participants or with at least
$10 million in plan assets.
    

   General. Redemptions may be suspended or payment postponed during any
period in which any of the following conditions exist: the Exchange is closed
or trading on the Exchange is restricted; an emergency exists as a result of
which disposal by the Fund of securities owned by it is not reasonably
practicable or it is not reasonably practicable for the Fund to fairly
determine the value of the net assets of its portfolio; or the SEC, by order,
so permits.

   Redemptions and repurchases are taxable transactions to shareholders. The
net asset value per share received upon redemption or repurchase may be more
or less than the cost of shares to an investor, depending on the market value
of the portfolio at the time of redemption or repurchase.

IX. HOW TO EXCHANGE FUND SHARES

   Written Exchanges. You may exchange your shares by sending a letter of
instruction to PSC. Your letter should include your name, the name of the
Fund out of which you wish to exchange and the name of the Pioneer mutual
fund into which you wish to exchange, your fund account number(s), the Class
of shares to be exchanged and the dollar amount or number of shares to be
exchanged. Written exchange requests must be signed by all record owner(s)
exactly as the shares are registered.

   
   Telephone Exchanges. Your account is automatically authorized to have the
telephone exchange privilege unless you indicate otherwise on your Account
Application or by writing to PSC. Proper account identification will be
required for each telephone exchange. Telephone exchanges may not exceed
$500,000 per account per day. Each telephone exchange request, whether by
voice or by FactFoneSM, will be recorded. You are strongly urged to consult
with your financial representative prior to requesting a telephone exchange.
See "Telephone Transactions and Related Liabilities" below.

   Automatic Exchanges. You may automatically exchange shares from one
Pioneer mutual fund account for shares of the same Class in another Pioneer
mutual fund account on a monthly or quarterly basis. The accounts must have
identical registrations and the originating account must have a minimum
balance of $5,000. The exchange will be effective on the day of the month
designated on your Account Application or Account Options Form.

   General. Exchanges must be at least $1,000. You may exchange your
investment from one Class of Fund shares at net asset value, without a sales
charge, for shares of the same Class of any other Pioneer mutual fund. Not
all Pioneer mutual funds offer more than one Class of shares. A new Pioneer
mutual fund account opened through an exchange must have a registration
identical to that on the original account.

   Shares which would normally be subject to a CDSC upon redemption will not
be charged the applicable CDSC at the time of an exchange. Shares acquired in
an exchange will be subject to the CDSC of the shares originally held. For
purposes of determining the amount of any applicable CDSC, the length of time
you have owned shares acquired by exchange will be measured from the date you
acquired the original shares and will not be affected by any subsequent
exchange.
    

   Exchange requests received by PSC before 4:00 p.m. Eastern Time will be
effective on that day if the requirements above have been met, otherwise,
they will be effective on the next business day. PSC will process exchanges
only after receiving an exchange request in good order. There are currently
no fees or sales charges imposed at the time of an exchange. An exchange of
shares may be made only in states where legally permitted. For federal and
(generally) state income tax purposes, an exchange is considered to be a sale
of the shares of the Fund exchanged and a purchase of shares in another
Pioneer mutual fund. Therefore, an exchange could result in a gain or loss on
the shares sold, depending on the tax basis of these shares and the timing of
the transaction, and special tax rules may apply.

   You should consider the differences in objectives and policies of the
Pioneer mutual funds, as described in each fund's current prospectus, before
making any exchange. For the protection of the Fund's performance and
shareholders, the Fund and PFD reserve the right to refuse any exchange
request or restrict, at any time without notice, the number and/or frequency
of exchanges to prevent abuses of the exchange privilege. Such abuses may
arise from frequent trading in response to short-term market fluctuations, a
pattern of trading by an individual or group that appears to be an attempt to
"time the market," or any other exchange request which, in the view of
management, will have a detrimental effect on the Fund's portfolio management
strategy or its operations. In addition, the Fund and PFD reserve the right
to charge a fee for exchanges or to modify, limit, suspend or discontinue the
exchange privilege with notice to shareholders as required by law.

X. DISTRIBUTION PLANS

   The Fund has adopted a Plan of Distribution for each Class of shares (the
"Class A Plan," "Class B Plan," and "Class C Plan") in accordance with Rule
12b-1 under the 1940 Act pursuant to which certain distribution fees are paid
to PFD.

                                      12
<PAGE>

   Pursuant to the Class A Plan, the Fund reimburses PFD for its actual
expenditures to finance any activity primarily intended to result in the sale
of Class A shares or to provide services to holders of Class A shares,
provided the categories of expenses for which reimbursement is made are
approved by the Fund's Board of Trustees. As of the date of this Prospectus,
the Board of Trustees has approved the following categories of expenses for
Class A shares of the Fund: (i) a service fee to be paid to qualified
broker-dealers in an amount not to exceed 0.25% per annum of the Fund's daily
net assets attributable to Class A shares; (ii) reimbursement to PFD for its
expenditures for broker-dealer commissions and employee compensation on
certain sales of the Fund's Class A shares with no initial sales charge (See
"How to Buy Fund Shares"); and (iii) reimbursement to PFD for expenses
incurred in providing services to Class A shareholders and supporting
broker-dealers and other organizations (such as banks and trust companies) in
their efforts to provide such services. Banks are currently prohibited under
the Glass-Steagall Act from providing certain underwriting or distribution
services. If a bank was prohibited from acting in any capacity or providing
any of the described services, management would consider what action, if any,
would be appropriate.

   Expenditures of the Fund pursuant to the Class A Plan are accrued daily
and may not exceed 0.25% of the Fund's average daily net assets attributable
to Class A shares. Distribution expenses of PFD are expected to substantially
exceed the distribution fees paid by the Fund in a given year. The Class A
Plan may not be amended to increase materially the annual percentage
limitation of average net assets which may be spent for the services
described therein without approval of the shareholders of the Fund.

   Both the Class B Plan and the Class C Plan provide that the Fund will
compensate PFD by paying a distribution fee at the annual rate of 0.75% of
the Fund's average daily net assets attributable to the applicable Class of
shares and a service fee at the annual rate of 0.25% of the Fund's average
daily net assets attributable to that Class of shares. The distribution fee
is intended to compensate PFD for its Class B and Class C distribution
services to the Fund. The service fee is intended to be additional
compensation for personal services and/or account maintenance services with
respect to Class B or Class C shares. PFD also receives the proceeds of any
CDSC imposed on the redemption of Class B or Class C shares.

   Commissions of 4% of the amount invested in Class B shares, equal to 3.75%
of the amount invested and a first year's service fee equal to 0.25% of the
amount invested, are paid to broker-dealers who have selling agreements with
PFD. PFD may advance to dealers the first year service fee at a rate up to
0.25% of the purchase price of such shares and, as compensation therefore,
PFD may retain the service fee paid by the Fund with respect to such shares
for the first year after purchase. Commencing in the 13th month following the
purchase of Class B shares, dealers will become eligible for additional
annual service fees of up to 0.25% of the net asset value of such shares.

   
   Commissions of up to 1% of the amount invested in Class C shares,
consisting of 0.75% of the amount invested and a first year's service fee of
0.25% of the amount invested, are paid to broker-dealers who have selling
agreements with PFD. PFD may advance to dealers the first year service fee at
a rate up to 0.25% of the purchase price of such shares and, as compensation
therefore, PFD may retain the service fee paid by the Fund with respect to
such shares for the first year after purchase. Commencing in the 13th month
following the purchase of Class C shares, dealers will become eligible for
additional annual distribution fees and services fees of up to 0.75% and
0.25%, respectively, of the net asset value of such shares.

   When a broker-dealer sells Class B or Class C shares and elects, with
PFD's approval, to waive its right to receive the commission normally paid at
the time of the sale, PFD may cause all or a portion of the distribution fees
described above to be paid to the broker-dealer.

   Dealers may from time to time be required to meet certain criteria in
order to receive service fees. PFD or its affiliates are entitled to retain
all service fees payable under the Class B Plan or the Class C Plan for which
there is no dealer of record or for which qualification standards have not
been met as partial consideration for personal services and/or account
maintenance services performed by PFD or its affiliates for shareholder
accounts.
    

XI. DIVIDENDS, DISTRIBUTIONS AND TAXATION

   
   The Fund has elected to be treated, has qualified and intends to qualify
each year as a "regulated investment company" under Subchapter M of the Code,
so that it will not pay federal income tax on income and capital gains
distributed to shareholders as required under the Code. Under the Code, the
Fund will be subject to a nondeductible 4% excise tax on a portion of its
undistributed ordinary income and capital gains if it fails to meet certain
distribution requirements with respect to each calendar year. The Fund
intends to make distributions in a timely manner and accordingly does not
expect to be subject to the excise tax.

   The Fund's policy is to pay to shareholders dividends from net investment
income, if any, twice each year during the months of June and December and to
make distributions from net long-term capital gains, if any, in December.
Distributions from net short-term capital gains, if any, may be paid with
such dividends; dividends from income and/or capital gains may also be paid
at such other times as may be necessary for the Fund to avoid federal income
or excise tax. Generally, dividends from the Fund's net investment income,
market discount income, net short-term capital gains, and certain net foreign
exchange gains are taxable under the Code as ordinary income, and dividends
from the Fund's net long-term capital gains are taxable as long-term capital
gains.

   Unless shareholders specify otherwise, all distributions will be
automatically reinvested in additional full and fractional shares of the
Fund. For federal income tax purposes, all dividends are taxable as described
above whether a shareholder takes them in cash or reinvests them in
additional shares of the Fund. Information as to the federal tax status of
dividends and distributions will be provided to shareholders annually. For
further information on the distribu-
    


                                      13
<PAGE>

tion options available to shareholders, see "Distribution Options" and
"Directed Dividends" below.

   
   Distributions by the Fund of the dividend income it receives from U.S.
domestic corporations, if any, may qualify for the dividends-received
deduction for corporate shareholders, subject to holding-period requirements
and debt-financing restrictions under the Code.

   The Fund may be subject to foreign withholding taxes or other foreign
taxes on income (possibly including, in some cases, capital gains) on certain
of its foreign investments, which will reduce the yield or return from those
investments. If, as anticipated, the Fund does not qualify to pass such taxes
through to its shareholders, they will neither treat such taxes as additional
income nor be entitled to any associated foreign tax credits or deductions.

   Dividends and other distributions and the proceeds of redemptions,
exchanges or repurchases of Fund shares paid to individuals and other
non-exempt payees will be subject to 31% backup withholding of federal income
tax if the Fund is not provided with the shareholder's correct taxpayer
identification number and certification that the number is correct and that
the shareholder is not subject to backup withholding or if the Fund receives
notice from the IRS or a broker that such withholding applies. Please refer
to the Account Application for additional information.

   The description above relates only to U.S. federal income tax consequences
for shareholders who are U.S. persons, i.e., U.S. citizens or residents or
U.S. corporations, partnerships, trusts or estates, and who are subject to
U.S. federal income tax. Non-U.S. shareholders and tax-exempt shareholders
are subject to different tax treatment that is not described above.
Shareholders should consult their own tax advisors regarding state, local and
other applicable tax laws.

XII. SHAREHOLDER SERVICES

   PSC is the shareholder services and transfer agent for shares of the Fund.
PSC, a Massachusetts corporation, is a wholly-owned subsidiary of PGI. PSC's
offices are located at 60 State Street, Boston, Massachusetts 02109, and
inquiries to PSC should be mailed to Pioneering Services Corporation, P.O.
Box 9014, Boston, Massachusetts 02205-9014. Brown Brothers Harriman & Co.
(the "Custodian") serves as custodian of the Fund's portfolio securities and
other assets. The principal business address of the mutual fund division of
the Custodian is 40 Water Street, Boston, Massachusetts 02109.
    

Account and Confirmation Statements

   
   PSC maintains an account for each shareholder and all transactions of the
shareholder are recorded in this account. Confirmation statements showing
details of transactions are sent to shareholders as transactions occur,
except Automatic Investment Plan transactions which are confirmed quarterly.
The Pioneer Combined Account Statement, mailed quarterly, is available to
shareholders who have more than one Pioneer mutual fund account.

  Shareholders whose shares are held in the name of an investment
broker-dealer or other party will not normally have an account with the Fund
and might not be able to utilize some of the services available to
shareholders of record. Examples of services which might not be available are
purchases, exchanges or redemptions of shares by mail or telephone, automatic
reinvestment of dividends and capital gains distributions, withdrawal plans,
Letters of Intention, Rights of Accumulation, and newsletters.
    

Additional Investments

   You may add to your account by sending a check (minimum of $50 for Class A
shares and $500 for Class B and C shares) to PSC (account number and Class of
shares should be clearly indicated). The bottom portion of a confirmation
statement may be used as a remittance slip to make additional investments.

   
   Additions to your account, whether by check or through a Pioneer
Investomatic Plan, are invested in full and fractional shares of the Fund at
the applicable offering price in effect as of the close of regular trading on
the Exchange on the day of receipt.
    

Automatic Investment Plans

   
   You may arrange for regular automatic investments of $50 or more through
government/military allotments, payroll deduction or through a Pioneer
Investomatic Plan. A Pioneer Investomatic Plan provides for a monthly or
quarterly investment by means of a pre-authorized electronic funds transfer
or draft drawn on a checking account. Pioneer Investomatic Plan investments
are voluntary, and you may discontinue the Plan at any time without penalty
upon 30 days' written notice to PSC. PSC acts as agent for the purchaser, the
broker-dealer and PFD in maintaining these plans.
    

Financial Reports and Tax Information

   
   As a shareholder, you will receive financial reports at least
semiannually. In January of each year, the Fund will mail you information
about the tax status of dividends and distributions.
    

Distribution Options

   Dividends and capital gains distributions, if any, will automatically be
invested in additional shares of the Fund, at the applicable net asset value
per share, unless you indicate another option on the Account Application.

   Two other options available are (a) dividends in cash and capital gains
distributions in additional shares; and (b) all dividends and capital gains
distributions in cash. These two options are not available, however, for
retirement plans or for an account with a net asset value of less than $500.
Changes in your distribution options may be made by written request to PSC.

   
   If you elect to receive either dividends or capital gains or both in cash
and a distribution check issued to you is returned by the United States
Postal Service as not deliverable or a distribution check remains uncashed
for six months or more, the amount of the check may be reinvested in your
account. Such additional shares will be purchased at the then current net
asset value. Furthermore, the distribution option on the account will
automatically be changed to the reinvestment option until such time as you
request a different option by writing to PSC.
    


                                      14
<PAGE>

Directed Dividends

   
   You may elect (in writing) to have the dividends paid by one Pioneer
mutual fund account invested in a second Pioneer mutual fund account. The
value of this second account must be at least $1,000 ($500 for Pioneer Fund
or Pioneer II). Invested dividends may be in any amount, and there are no
fees or charges for this service. Retirement plan shareholders may only
direct dividends to accounts with identical registrations, i.e., PGI IRA Cust
for John Smith may only go into another account registered PGI IRA Cust for
John Smith.
    

Direct Deposit

   If you have elected to take distributions, whether dividends or dividends
and capital gains, in cash, or have established a Systematic Withdrawal Plan,
you may choose to have those cash payments deposited directly into your
savings, checking or NOW bank account. You may establish this service by
completing the appropriate section on the Account Application when opening a
new account or the Account Options Form for an existing account.

Voluntary Tax Withholding

   You may request (in writing) that PSC withhold 28% of the dividends and
capital gains distributions paid from your account (before any reinvestment)
and forward the amount withheld to the IRS as a credit against your federal
income taxes. This option is not available for retirement plan accounts or
for accounts subject to backup withholding.

Telephone Transactions and Related Liabilities

   
   Your account is automatically authorized to have telephone transaction
privileges unless you indicate otherwise on your Account Application or by
writing to PSC. You may purchase, sell or exchange Fund shares by telephone.
For personal assistance, call 1-800-225-6292 between 8:00 a.m. and 9:00 p.m.
Eastern time on weekdays. Computer-assisted transactions are available to
shareholders who have pre-recorded certain bank information (see
"FactFoneSM"). You are strongly urged to consult with your financial
representative prior to requesting any telephone transaction. See "How to Buy
Fund Shares," "How to Sell Fund Shares" and "How to Exchange Fund Shares" for
more information. To confirm that each transaction instruction received by
telephone is genuine, PSC will record each telephone transaction, require the
caller to provide the personal identification number ("PIN") for the account
and send you a written confirmation of each telephone transaction. Different
procedures may apply to accounts that are registered to non-U.S. citizens or
that are held in the name of an institution or in the name of an investment
broker-dealer or other third-party. If reasonable procedures, such as those
described above, are not followed, the Fund may be liable for any loss due to
unauthorized or fraudulent instructions. The Fund may implement other
procedures from time to time. In all other cases, neither the Fund, PSC nor
PFD will be responsible for the authenticity of instructions received by
telephone; therefore, you bear the risk of loss for unauthorized or
fraudulent telephone transactions.
    

   During times of economic turmoil or market volatility or as a result of
severe weather or a natural disaster, it may be difficult to contact the Fund
by telephone to institute a redemption or exchange. You should communicate
with the Fund in writing if you are unable to reach the Fund by telephone.

FactFone(SM)

   
   FactFone(SM) is an automated inquiry and telephone transaction system
available to Pioneer shareholders by dialing 1-800-225-4321. FactFoneSM
allows you to obtain current information on your Pioneer mutual fund accounts
and to inquire about the prices and yields of all publicly available Pioneer
mutual funds. In addition, you may use FactFoneSM to make computer-assisted
telephone purchases, exchanges and redemptions from your Pioneer mutual fund
accounts if you have activated your PIN. Telephone purchases and redemptions
require the establishment of a bank account of record. You are strongly urged
to consult with your financial representative prior to requesting any
telephone transaction. Shareholders whose accounts are registered in the name
of a broker-dealer or other third party may not be able to use FactFoneSM.
See "How to Buy Fund Shares," "How to Exchange Fund Shares," "How to Sell
Fund Shares" and "Telephone Transactions and Related Liabilities." Call PSC
for assistance.
    

Retirement Plans

   You should contact the Retirement Plans Department of PSC at
1-800-622-0176 for information relating to retirement plans for businesses,
age-weighted profit sharing plans, Simplified Employee Pension Plans, IRAs,
and Section 403(b) retirement plans for employees of certain non-profit
organizations and public school systems, all of which are available in
conjunction with investments in the Fund. The Account Application
accompanying this Prospectus should not be used to establish any of these
plans. Separate applications are required.

Telecommunications Device for the Deaf (TDD)

   
   If you have a hearing disability and access to TDD keyboard equipment, you
can call our TDD number toll-free at 1-800-225-1997, weekdays from 8:30 a.m.
to 5:30 p.m. Eastern Time, to contact our telephone representatives with
questions about your account.

Systematic Withdrawal Plans

   If your account has a total value of at least $10,000 you may establish a
Systematic Withdrawal Plan ("SWP") providing for fixed payments at regular
intervals. Withdrawals from Class B and Class C share accounts are limited to
10% of the value of the account at the time the SWP is implemented. See
"Waiver or Reduction of Contingent Deferred Sales Charge" for more
information. Periodic checks of $50 or more will be sent to you, or any
person designated by you, monthly or quarterly, and your periodic redemptions
of shares may be taxable to you. Payments can be made either by check or
electronic transfer to a bank account designated by you. If you direct that
withdrawal checks be paid to another person after you have opened your
account, a signature guarantee must accompany your instructions. Purchases of
Class A shares of the Fund at a time when you have a SWP in effect may result
in the payment of unnecessary sales charges and may therefore be
disadvantageous.
    


                                      15
<PAGE>

   You may obtain additional information by calling PSC at 1-800-225-6292 or
by referring to the Statement of Additional Information.

Reinstatement Privilege (Class A Shares Only)

   
   If you redeem all or part of your Class A shares of the Fund, you may
reinvest all or part of the redemption proceeds without a sales charge in
Class A shares of the Fund if you send a written request to PSC not more than
90 days after your shares were redeemed. Your redemption proceeds will be
reinvested at the next determined net asset value of the Class A shares of
the Fund in effect immediately after receipt of the written request for
reinstatement. You may realize a gain or loss for federal income tax purposes
as a result of the redemption, and special tax rules may apply if a
reinstatement occurs. Subject to the provisions outlined under "How to
Exchange Fund Shares" above, you may also reinvest in Class A shares of other
Pioneer mutual funds; in this case you must meet the minimum investment
requirements for each fund you enter.
    

   The 90-day reinstatement period may be extended by PFD for periods of up
to one year for shareholders living in areas that have experienced a natural
disaster, such as a flood, hurricane, tornado, or earthquake.

   The options and services available to shareholders, including the terms of
the Exchange Privilege and the Pioneer Investomatic Plan, may be revised,
suspended or terminated at any time by PFD or by the Fund. You may establish
the services described in this section when you open your account. You may
also establish or revise many of them on an existing account by completing an
Account Options Form, which you may request by calling 1-800-225-6292.

XIII. THE FUND

   
   The Fund is a diversified open-end management investment company (commonly
referred to as a mutual fund) organized as a Delaware business trust on
January 31, 1996. Prior to that time the Fund operated as a Massachusetts
business trust, initially reorganized as such on January 31, 1985. The Fund
has authorized an unlimited number of shares of beneficial interest. As an
open-end management investment company, the Fund continuously offers its
shares to the public and under normal conditions must redeem its shares upon
the demand of any shareholder at the then current net asset value per share.
See "How to Sell Fund Shares." The Fund is not required, and does not intend,
to hold annual shareholder meetings although special meetings may be called
for the purpose of electing or removing Trustees, changing fundamental
investment restrictions or approving a management contract.

   The Fund reserves the right to create and issue additional series of
shares. The Trustees have the authority, without further shareholder
approval, to classify and reclassify the shares of the Fund, or any
additional series of the Fund, into one or more classes. As of the date of
this Prospectus, the Trustees have authorized the issuance of three classes
of shares, designated Class A, Class B and Class C. The shares of each class
represent an interest in the same portfolio of investments of the Fund. Each
class has equal rights as to voting, redemption, dividends and liquidation,
except that each class bears different distribution and transfer agent fees
and may bear other expenses properly attributable to the particular class.
Class A, Class B and Class C shareholders have exclusive voting rights with
respect to the Rule 12b-1 distribution plans adopted by holders of those
shares in connection with the distribution of shares.

   In addition to the requirements under Delaware law, the Declaration of
Trust provides that a shareholder of the Fund may bring a derivative action
on behalf of the 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 Fund, or 10% of the
outstanding shares of the series or class to 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 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 Fund for the expense of any such
advisers in the event that the Trustees determine not to bring such action.
    

   When issued and paid for in accordance with the terms of the Prospectus
and Statement of Additional Information, shares of the Fund are fully-paid
and non-assessable. Shares will remain on deposit with the Fund's transfer
agent and certificates will not normally be issued. The Fund reserves the
right to charge a fee for the issuance of certificates.

XIV. INVESTMENT RESULTS

   The average annual total return (for a designated period of time) on an
investment in the Fund may be included in advertisements, and furnished to
existing or prospective shareholders. The average annual total return for
each Class is computed in accordance with the SEC's standardized formula. The
calculation for all Classes assumes the reinvestment of all dividends and
distributions at net asset value and does not reflect the impact of federal
or state income taxes. In addition, for Class A shares the calculation
assumes the deduction of the maximum sales charge of 5.75%; for Class B and
Class C shares the calculation reflects the deduction of any applicable CDSC.
The periods illustrated would normally include one, five and ten years (or
since the commencement of the public offering of the shares of a Class, if
shorter) through the most recent calendar quarter.

   One or more additional measures and assumptions, including but not limited
to historical total returns; distribution returns; results of actual or
hypothetical investments; changes in dividends, distributions or share
values; or any graphic illustration of such data may also be used. These data
may cover any period of the Fund's existence and may or may not include the
impact of sales charges, taxes or other factors.

   Other investments or savings vehicles and/or unmanaged market indexes,
indicators of economic activity or averages of

                                      16
<PAGE>

mutual fund results may be cited or compared with the investment results of
the Fund. Rankings or listings by magazines, newspapers or independent
statistical or rating services, such as Lipper Analytical Services, Inc., may
also be referenced.

   The Fund's investment results will vary from time to time depending on
market conditions, the composition of the Fund's portfolio and operating
expenses of the Fund. All quoted investment results are historical and should
not be considered representative of what an investment in the Fund may earn
in any future period. For further information about the calculation methods
and uses of the Fund's investment results, see the Statement of Additional
Information.


                                      17
<PAGE>


   
                                    Notes
    


                                      18
<PAGE>

   
THE PIONEER FAMILY OF MUTUAL FUNDS

Growth Funds
Global/International
  Pioneer Emerging Markets Fund
  Pioneer Europe Fund
  Pioneer Gold Shares
  Pioneer India Fund
  Pioneer International Growth Fund
  Pioneer World Equity Fund

United States
  Pioneer Capital Growth Fund
  Pioneer Growth Shares
  Pioneer Mid-Cap Fund
  Pioneer Small Company Fund

Growth and Income Funds
  Pioneer Balanced Fund
  Pioneer Equity-Income Fund
  Pioneer Fund
  Pioneer Real Estate Shares
  Pioneer II

Income Funds
Taxable
  Pioneer America Income Trust
  Pioneer Bond Fund
  Pioneer Short-Term Income Trust*

Tax-Exempt
  Pioneer Intermediate Tax-Free Fund**
  Pioneer Tax-Free Income Fund**

Money Market Fund
  Pioneer Cash Reserves Fund

 *Offers Class A and B Shares only
**Not suitable for retirement accounts
    


                                      19
<PAGE>

                                                               [PIONEER LOGO]
   
Pioneer Mid-Cap
Fund
60 State Street
Boston, Massachusetts 02109

OFFICERS
JOHN F. COGAN, JR., Chairman and President
DAVID D. TRIPPLE, Executive Vice President
WILLIAM H. KEOUGH, Treasurer
JOSEPH P. BARRI, Secretary
    

INVESTMENT ADVISER
PIONEERING MANAGEMENT CORPORATION

CUSTODIAN
BROWN BROTHERS HARRIMAN & CO.

INDEPENDENT PUBLIC ACCOUNTANTS
ARTHUR ANDERSEN LLP

   
LEGAL COUNSEL
HALE AND DORR LLP
    

PRINCIPAL UNDERWRITER
PIONEER FUNDS DISTRIBUTOR, INC.

SHAREHOLDER SERVICES AND TRANSFER AGENT
PIONEERING SERVICES CORPORATION
60 State Street
Boston, Massachusetts 02109
Telephone: 1-800-225-6292

SERVICE INFORMATION
If you would like information on the following, please call:

   
Existing and new accounts, prospectuses,
 applications, service forms
 and telephone transactions  ................................ 1-800-225-6292
FactFone(SM)
 Automated fund yields and prices and
 account information ........................................ 1-800-225-4321
    

Retirement plans ............................................ 1-800-622-0176
Toll-free fax ............................................... 1-800-225-4240
Telecommunications Device for the Deaf (TDD) ................ 1-800-225-1997

   
0197-3908
(C)Pioneer Funds Distributor, Inc.
    

                                      


  <PAGE>

     


                              PIONEER MID-CAP FUND
                                 60 State Street
                           Boston, Massachusetts 02109

                       STATEMENT OF ADDITIONAL INFORMATION

                       Class A, Class B and Class C Shares

   
                                January 28, 1997

This Statement of Additional Information is not a Prospectus, but should be read
in conjunction with the Prospectus, dated January 28, 1997 (the "Prospectus"). A
copy of the  Prospectus  can be obtained  free of charge by calling  Shareholder
Services at 1-  800-225-6292  or by written request to Pioneer Mid-Cap Fund (the
"Fund") at 60 State Street, Boston,  Massachusetts 02109. The most recent Annual
Report to Shareholders  is attached to this Statement of Additional  Information
and is hereby  incorporated  in this  Statement  of  Additional  Information  by
reference.
    

                                TABLE OF CONTENTS

                                                                           Page

   
1.    Investment Policies and Restrictions...............................   2
2.    Management of the Fund.............................................   7
3.    Investment Adviser.................................................  12
4.    Underwriting Agreement and Distribution Plans......................  15
5.    Shareholder Servicing/Transfer Agent...............................  18
6.    Custodian..........................................................  19
7.    Principal Underwriter..............................................  19
8.    Independent Public Accountants.....................................  19
9.    Portfolio Transactions.............................................  19
10.   Tax Status.........................................................  21
11.   Description of Shares..............................................  25
12.   Certain Liabilities................................................  26
13.   Letter of Intention................................................  27
14.   Systematic Withdrawal Plan.........................................  28
15.   Determination of Net Asset Value...................................  28
16.   Investment Results.................................................  29
17.   Financial Statements...............................................  32
      Appendix A.........................................................A-33
      Appendix B.........................................................B-50
    

THIS  STATEMENT OF ADDITIONAL  INFORMATION IS NOT A PROSPECTUS AND IS AUTHORIZED
FOR DISTRIBUTION TO PROSPECTIVE  INVESTORS ONLY IF PRECEDED OR ACCOMPANIED BY AN
EFFECTIVE PROSPECTUS.
<PAGE>


1.      INVESTMENT POLICIES AND RESTRICTIONS

The  Fund's  current  prospectus  (the  "Prospectus")  presents  the  investment
objective  and  the  principal  investment  policies  of  the  Fund.  Additional
investment  policies and a further description of some of the policies described
in the Prospectus appear below.

The  following  policies  and  restrictions  supplement  those  discussed in the
Prospectus.  Whenever  an  investment  policy  or  restriction  states a maximum
percentage of the Fund's assets that may be invested in any security or presents
a policy regarding quality standards,  this standard or other restrictions shall
be  determined  immediately  after  and as a result  of the  Fund's  investment.
Accordingly,  any later increase or decrease  resulting from a change in values,
net assets or other  circumstances will not be considered in determining whether
the investment complies with the Fund's investment objectives and policies.

Lending of Portfolio Securities

The Fund may lend  portfolio  securities  to member  firms of the New York Stock
Exchange  under  agreements  which  would  require  that the  loans  be  secured
continuously by collateral in cash,  cash  equivalents or United States ("U.S.")
Treasury Bills  maintained on a current basis at an amount at least equal to the
market value of the  securities  loaned.  The Fund would continue to receive the
equivalent  of the  interest or dividends  paid by the issuer on the  securities
loaned  as well  as the  benefit  of an  increase  in the  market  value  of the
securities loaned and would also receive compensation based on investment of the
collateral.  The Fund would not, however,  have the right to vote any securities
having voting  rights during the existence of the loan,  but would call the loan
in anticipation of an important vote to be taken among holders of the securities
or of the giving or  withholding of consent on a material  matter  affecting the
investment.

As with other  extensions of credit there are risks of delay in recovery or even
loss of rights in the  collateral  should the  borrower of the  securities  fail
financially.  The Fund will lend portfolio  securities  only to firms which have
been  approved  in advance by the Board of  Trustees,  which  will  monitor  the
creditworthiness of any such firms. At no time would the value of the securities
loaned exceed 5% of the value of the Fund's total assets.

Forward Foreign Currency Transactions

The Fund may engage in foreign currency transactions.  These transactions may be
conducted  on a spot,  i.e.,  cash  basis,  at the spot rate for  purchasing  or
selling currency  prevailing in the foreign  exchange market.  The Fund also has
authority  to deal in forward  foreign  currency  exchange  contracts  involving
currencies of the  different  countries in which the Fund will invest as a hedge
against  possible   variations  in  the  foreign  exchange  rate  between  these
currencies  and the  U.S.  dollar.  This  is  accomplished  through  contractual
agreements to


                                      -2-
<PAGE>

purchase or sell a specified  currency at a specified  future date and price set
at the time of the contract.  The Fund's  dealings in forward  foreign  currency
contracts will be limited to hedging either  specific  transactions or portfolio
positions.  Transaction  hedging  is the  purchase  or sale of  forward  foreign
currency contracts with respect to specific receivables or payables of the Fund,
accrued in connection with the purchase and sale of their  portfolio  securities
denominated  in  foreign  currencies.  Portfolio  hedging  is the use of forward
foreign currency contracts to offset portfolio security positions denominated or
quoted in such foreign  currencies.  There is no guarantee that the Fund will be
engaged in hedging  activities when adverse  exchange rate movements  occur. The
Fund will not attempt to hedge all of its foreign portfolio  positions,  and the
Fund will  enter  into such  transactions  only to the  extent,  if any,  deemed
appropriate by the investment adviser.  The Fund will not enter into speculative
forward foreign currency contracts.

If the Fund enters into a forward  contract to purchase  foreign  currency,  the
custodian  bank will  segregate  cash or high grade liquid debt  securities in a
separate  account in an amount equal to the value of the total assets  committed
to the  consummation  of such forward  contract.  Those assets will be valued at
market  daily and if the value of the assets in the separate  account  declines,
additional  cash or securities  will be placed in the accounts so that the value
of the account  will equal the amount of the Fund's  commitment  with respect to
such contracts.

Hedging  against  a  decline  in the  value of a  currency  does  not  eliminate
fluctuations  in the prices of  portfolio  securities  or prevent  losses if the
prices of such securities decline.  Such transactions also limit the opportunity
for gain if the value of the hedged currency should rise.  Moreover,  it may not
be possible  for the Fund to hedge  against a  devaluation  that is so generally
anticipated  that the Fund is not able to  contract  to sell the  currency  at a
price  above the  devaluation  level  they  anticipate.  The cost to the Fund of
engaging  in  foreign  currency  transactions  varies  with such  factors as the
currency involved,  the size of the contract,  the length of the contract period
and the  market  conditions  then  prevailing.  Since  transactions  in  foreign
currency and forward  contracts are usually  conducted on a principal  basis, no
fees or commissions are involved. The Fund may close out a forward position in a
currency  by selling the forward  contract  or by  entering  into an  offsetting
forward contract.

Real Estate Investment Trusts and Associated Risk Factors

   
The Fund may invest up to 5% of its assets in shares of real  estate  investment
trusts ("REITs"). REITs are pooled investment vehicles which invest primarily in
income  producing real estate or real estate  related loans or interests.  REITs
are generally  classified as equity REITs,  mortgage  REITs or a combination  of
equity and  mortgage  REITs.  Equity  REITs  invest the majority of their assets
directly in real property and derive  income  primarily  from the  collection of
rents.  Equity REITs can also realize  capital gains by selling  properties that
have appreciated in value. Mortgage REITs invest the majority of their assets in
real  estate  mortgages  and  derive  income  from the  collection  of  interest
payments.  Like  investment  
    


                                      -3-
<PAGE>

companies  such as the  Fund,  REITs  are not  taxed on  income  distributed  to
shareholders  provided  they comply with  several  requirements  of the Internal
Revenue Code of 1986, as amended (the "Code"). The Fund will indirectly bear its
proportionate  share of any  expenses  paid by REITs  in  which  it  invests  in
addition to the expenses paid by the Fund.

Investing  in REITs  involves  certain  unique  risks in addition to those risks
associated with investing in the real estate  industry in general.  Equity REITs
may be affected by changes in the value of the underlying  property owned by the
REITs,  while  mortgage  REITs may be  affected  by the  quality  of any  credit
extended.  REITs are dependent upon management skills, are not diversified,  and
are subject to the risks of financing projects.  REITs are subject to heavy cash
flow dependency,  default by borrowers, self- liquidation, and the possibilities
of failing to qualify for the exemption  from tax for  distributed  income under
the Code and failing to maintain their  exemptions  from the Investment  Company
Act of 1940, as amended (the "1940 Act").  REITs whose underlying assets include
long-term  health care  properties,  such as nursing,  retirement  and  assisted
living homes, may be impacted by federal regulations  concerning the health care
industry.

REITs (especially  mortgage REITs) are also subject to interest rate risks. When
interest  rates  decline,  the  value  of a  REIT's  investment  in  fixed  rate
obligations can be expected to rise.  Conversely,  when interest rates rise, the
value of a REIT's  investment  in fixed  rate  obligations  can be  expected  to
decline.  In contrast,  as interest rates on adjustable  rate mortgage loans are
reset periodically,  yields on a REIT's investments in such loans will gradually
align themselves to reflect changes in market interest rates,  causing the value
of such investments to fluctuate less  dramatically in response to interest rate
fluctuations than would investments in fixed rate obligations.

Investing in REITs involves risks similar to those  associated with investing in
mid capitalization  companies.  REITs may have limited financial resources,  may
trade less  frequently and in a limited volume and may be subject to more abrupt
or erratic price  movements than larger company  securities.  Historically,  mid
capitalization  stocks, such as REITs, have been more volatile in price than the
larger  capitalization  stocks  included in the  Standard & Poor's  Index of 500
Common Stocks.
       

Investment Restrictions

Fundamental  Investment  Restrictions.  The Fund has adopted certain  additional
investment restrictions which may not be changed without the affirmative vote of
the  holders  of a  "majority"  (as  defined  in the  1940  Act)  of the  Fund's
outstanding voting securities. The Fund may not:

   
         (1)  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  
    


                                      -4-
<PAGE>

contracts and 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.

         (2)  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  amounts  not  exceeding  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 and dollar
rolls) exceed 10% of the Fund's total assets.

         (3)  Guarantee  the  securities  of any other  company,  or , mortgage,
pledge, hypothecate or assign or otherwise encumber as security for indebtedness
its securities or receivables in an amount exceeding the amount of the borrowing
secured thereby.

         (4) Purchase  securities  of a company if the purchase  would result in
the Fund's  having  more than 5% of the value of its total  assets  invested  in
securities of such company.

         (5) 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.

         (6)      Act as an underwriter, except as it may deemed to be on 
underwriter in a sale of restricted securities held in its portfolio.

         (7) 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.

         (8) Invest in real estate,  commodities or commodity contracts,  except
that the Fund may  invest in real  estate  investment  trusts  and 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

         (9) Purchase securities on "margin" or effect " short sales" of 
securities.

                                      -5-
<PAGE>


   
It is the  fundamental  policy of the Fund not to concentrate its investments in
securities  of  companies  in any  particular  industry.  Following  the current
opinion  of  the  staff  of  the   Securities  and  Exchange   Commission   (the
"Commission"),  the Fund's investments are concentrated in a particular industry
if such investments aggregate 25% or more of the Fund's total assets. The Fund's
policy does not apply to investments in U.S. Government Securities.
    

The Fund does not intend to enter into any reverse  repurchase  agreement,  lend
portfolio  securities or invest in securities  index put and call  warrants,  as
described in fundamental investment  restrictions (2), (6) and (7) above, during
the coming year.

   
Non-Fundamental Investment Restrictions.
    

The following  restrictions have been designated as  non-fundamental  and may be
changed  by a  vote  of  the  Fund's  Board  of  Trustees  without  approval  of
shareholders.

The Fund may not:

         (1) purchase or retain the securities of any company if officers of the
Fund or  Trustees  of the Fund,  or  officers  and  directors  of its adviser or
principal  underwriter,  individually  own  more  than  one-half  of 1%  of  the
securities of such company or collectively own more than 5% of the securities of
such company; or

         (2) 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; or

         (3) 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.

In addition,  in connection  with the offering of its shares in various  states,
the Fund has agreed not to: (1) invest in puts, calls, straddles, spreads or any
combination  thereof, or in oil, gas or other mineral exploration or development
leases or programs;  (2) invest more than 5% of its assets in equity  securities
of any issuer which are not readily  marketable,  i.e.,  securities  for which a
bona fide market does not exist at the time of purchase or subsequent valuation;
(3)  pledge  its  portfolio  securities,  unless  its net  assets  less  pledged
securities continues to amount to at least 90% of the offering price; (4) invest
more than 5% of its total  assets  in  warrants,  valued at the lower of cost or
market,  or more than 2% of its total assets in 


                                      -6-
<PAGE>

warrants,  so  valued,  which are not listed on the New York or  American  Stock
Exchanges; and (5) invest in real estate limited partnerships.

2.       MANAGEMENT OF THE FUND

         The  Fund's  Board of  Trustees  provides  broad  supervision  over the
affairs of the Fund.  The  officers of the Fund are  responsible  for the Fund's
operations.  The Trustees and  executive  officers of the Fund are listed below,
together  with  their  principal  occupations  during  the past five  years.  An
asterisk  indicates those Trustees who are interested persons of the Fund within
the meaning of the Investment Company Act of 1940, as amended (the "1940 Act").

   
JOHN F. COGAN,  JR.*,  Chairman of the Board,  President and Trustee,  DOB: June
1926
         President, Chief Executive Officer and a Director of The Pioneer Group,
Inc.  ("PGI");  Chairman  and a Director of  Pioneering  Management  Corporation
("PMC") and Pioneer  Funds  Distributor,  Inc.  ("PFD");  Director of Pioneering
Services   Corporation   ("PSC"),   Pioneer  Capital   Corporation  ("PCC")  and
Forest-Starma  (Russian  corporation);  President  and Director of Pioneer Plans
Corporation  ("PPC"),  Pioneer  Investment  Corp.  ("PIC"),  Pioneer  Metals and
Technology,  Inc. ("PMT"), Pioneer International Corp. ("PIntl"),  Pioneer First
Russia, Inc. ("First Russia") and Pioneer Omega, Inc. ("Omega"); Chairman of the
Board  and  Directors  of  Pioneer  Goldfields  Limited  ("PGL")  and  Teberebie
Goldfields  Limited;   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");  Chairman,  President and
Trustee of all of the  Pioneer  mutual  funds;  and  Partner,  Hale and Dorr LLP
(counsel to the Fund).


RICHARD H. EGDAHL, M.D., Trustee, DOB: December 1926
Boston University Health Policy Institute, 53 Bay State Rd., Boston, MA  02115
         Professor  of  Management,  Boston  University  School  of  Management;
Professor of Public Health, Boston University School of Public Health; Professor
of Surgery,  Boston University School of Medicine;  Director,  Boston University
Health Policy  Institute and Boston  University  Medical Center;  Executive Vice
President and Vice  Chairman of the Board,  University  Hospital;  Academic Vice
President for Health Affairs,  Boston  University;  Director,  Essex  Investment
Management  Company,  Inc.  (investment  adviser),  Health Payment Review,  Inc.
(health care  containment  software firm),  Mediplex Group,  Inc.  (nursing care
facilities firm),  Peer Review Analysis,  Inc. (health care facilities firm) and
Springer-Verlag  New  York,  Inc.  (publisher);   Honorary  Trustee,  Franciscan
Children's Hospital; and Trustee of all of the Pioneer mutual funds.

MARGARET B.W. GRAHAM, Trustee, DOB: May 1947
The Keep, P.O. Box 110, Little Deer Isle, ME  04650
         Founding Director,  Winthrop Group, Inc (consulting  firm);  Manager of
Research  Operations,  Xerox  Palo  Alto  Research  Center,  from  1991 to 1994;
Professor  of  Operations  Management  and  Management  


                                      -7-
<PAGE>

of Technology,  Boston  University School of Management  ("BUSM"),  from 1989 to
1993;  and Trustee of all the Pioneer  mutual  funds,  except  Pioneer  Variable
Contracts Trust.

JOHN W. KENDRICK, Trustee, DOB: July 1917
6363 Waterway Drive, Falls Church, VA  22044
         Professor Emeritus and Adjunct Scholar,  George Washington  University;
Economic  Consultant and Director,  American  Productivity  and Quality  Center;
American Enterprise  Institute;  and Trustee of all of the Pioneer mutual funds,
except Pioneer Variable Contracts Trust.

MARGUERITE A. PIRET, Trustee, DOB: May 1948
One Boston Place, Suite 2635, Boston, MA  02108
         President,  Newbury,  Piret & Company, Inc. (merchant banking firm) and
Trustee of all of the Pioneer mutual funds.

DAVID D. TRIPPLE*, Trustee and Executive Vice President, DOB: February 1944
         Executive  Vice  President  and a  Director  of PGI;  President,  Chief
Investment  Officer and a Director of PMC;  Director of PFD,  PCC,  PIC,  PIntl,
First Russia,  Omega and Pioneer SBIC Corporation;  and Executive Vice President
and Trustee of all of the Pioneer mutual funds.

STEPHEN K. WEST, Trustee, DOB: September 1928
125 Broad Street, New York, NY 10004
         Partner,  Sullivan & Cromwell (law firm);  Trustee,  The Winthrop Focus
Funds (mutual funds) and Trustee of all of the Pioneer mutual funds.

JOHN WINTHROP, Trustee, DOB: June 1936
One North Adgers Wharf, Charleston, SC  29401
         President,  John  Winthrop  &  Co.,  Inc.  (private  investment  firm);
Director of NUI Corp.; Trustee of Alliance Capital Reserves, Alliance Government
Reserves  and Alliance  Tax Exempt  Reserves;  and Trustee of all of the Pioneer
mutual funds, except Pioneer Variable Contracts Trust.

WILLIAM H. KEOUGH, Treasurer, DOB: April 1937
         Senior Vice President,  Chief  Financial  Officer and Treasurer of PGI;
Treasurer of PFD, PMC, PSC, PCC, PIC, PItnl,  PMT, PGL, First Russia,  Omega and
Pioneer SBIC Corporation; Treasurer and Director of PPC; and Treasurer of all of
the Pioneer mutual funds.

JOSEPH P. BARRI, Secretary, DOB: August 1946
         Secretary of PGI, PMC, PPC, PIC,  PIntl,  PMT, First Russia,  Omega and
PCC; Clerk of PFD and PSC; Partner, Hale and Dorr LLP (counsel to the Fund); and
Secretary of all of the Pioneer mutual funds.

                                      -8-
<PAGE>



ERIC W. RECKARD, Assistant Treasurer, DOB: June 1956
         Manager of Fund Accounting of PMC since May 1994;  Manager of Auditing,
Compliance  and  Business  Analysis  for PGI  prior to May 1994;  and  Assistant
Treasurer of all of the Pioneer mutual funds.

ROBERT P. NAULT, Assistant Secretary, DOB: March 1964
         General  Counsel and Assistant  Secretary of PGI since 1995;  Assistant
Secretary of PMC, PIntl, PGL, First Russia,  Omega and all of the Pioneer mutual
funds;  Assistant  Clerk  of PFD and  PSC;  and  formerly  of Hale  and Dorr LLP
(counsel to the Fund) where he most recently served as junior partner.

STEVEN C. CARHART, DOB: November 1948
         Vice President of PMC since July 1996; formerly a portfolio manager for
a number of investment advisers.

         The Fund's  Declaration of Trust (the  "Declaration of Trust") provides
that the holders of  two-thirds of its  outstanding  shares may vote to remove a
Trustee of the Fund at any meeting of shareholders.  See "Description of Shares"
below.  The  business  address  of all  officers  is 60  State  Street,  Boston,
Massachusetts 02109.

         All of the  outstanding  capital  stock of PFD,  PMC and PSC is  owned,
directly or indirectly, by PGI, a publicly-owned Delaware corporation.  PMC, the
Fund's  investment  adviser,  serves as the  investment  adviser for the Pioneer
mutual funds listed below and manages the  investments of certain  institutional
accounts.

         The table below lists all of the Pioneer mutual funds currently offered
to the public and the  investment  adviser and  principal  underwriter  for each
fund.

                                               Investment      Principal
Fund Name                                         Adviser   Underwriter


- ---------------------------------------------------- ------------- -----------
Pioneer International Growth Fund                    PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Europe Fund                                  PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer World Equity Fund                            PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Emerging Markets Fund                        PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer India Fund                                   PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Capital Growth Fund                          PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Mid-Cap Fund                                 PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Growth Shares                                PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Small Company Fund                           PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Gold Shares                                  PMC           PFD



                                      -9-
<PAGE>

- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Balanced Fund                                PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Equity-Income Fund                           PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Fund                                         PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer II                                           PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Real Estate Shares                           PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Short-Term Income Trust                      PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer America Income Trust                         PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Bond Fund                                    PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Intermediate Tax-Free Fund                   PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Tax-Free Income Fund                         PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Cash Reserves Fund                           PMC           PFD
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Interest Shares, Inc.                        PMC           Note 1
- ---------------------------------------------------- ------------- -----------
- ---------------------------------------------------- ------------- -----------
Pioneer Variable Contracts Trust                     PMC           Note 2
- ---------------------------------------------------- ------------- -----------


Note 1 This fund is a closed-end fund.

Note 2 This is a  series  of  eight  separate  portfolios  designed  to  provide
       investment  vehicles for the variable annuity and variable life insurance
       contracts of various insurance companies or for certain qualified pension
       plans.

To the knowledge of the Fund, no officer or trustee of the Fund owned 5% or more
of the issued and  outstanding  shares of PGI on the date of this  Statement  of
Additional  Information,  except Mr. Cogan who then owned  approximately  14% of
such shares.  As of the date of this  Statement of Additional  Information,  the
Trustees and officers of the Fund owned  beneficially in the aggregate less than
1% of the outstanding shares of the Fund. As of such date, PFD, 60 State Street,
Boston, MA 02109 owned  approximately  32.73% (5,814) of the outstanding Class C
shares of the Fund;.  Merrill Lynch Pierce  Fenner & Smith Inc.,  4800 Deer Lake
Drive  East 3rd Fl,  Jacksonville,  FL  32246-6484  owned  approximately  22.19%
(3,942) of the outstanding Class C shares of the Fund; Moberg  Enterprises Inc.,
8906 Maple Street,  Omaha, NE 68134-6128 owned  approximately 11.99 % (2,130) of
the outstanding  Class C shares of the Fund;  Zelma A. Stearman TTEE for Jean M.
Stearman and Jennifer Stearman U/A DTD 11/17/95,  6614 Sunshine Drive, Omaha, NE
68107-3759 owned  approximately 6.72 % (1,193) of the outstanding Class C shares
of the Fund; PGI Cust ORP Emp: North Harris College, 63331 Rusty Gate, Spring TX
77373 owned  approximately 5.18 % (920) of the outstanding Class C shares of the
Fund.


                      Compensation of Officers and Trustees

The Fund pays no salaries or compensation to any of its officers.  The Fund will
pay an annual trustee's fee to each Trustee who is not affiliated with PMC, PGI,
PFD or PSC  


                                      -10-
<PAGE>

consisting  of two  components:  (a) a base fee of $500 and (b) a variable  fee,
calculated on the basis of the average net assets of the Fund. In addition,  the
Fund will pay a per  meeting fee of $100 to each  Trustee who is not  affiliated
with  PMC,  PGI,  PFD or  PSC.  The  Fund  also  will  pay an  annual  committee
participation fee to trustees who serve as members of committees  established to
act on behalf of one or more of the Pioneer mutual funds. Committee fees will be
allocated  to the Fund on the  basis of the  Fund's  average  net  assets.  Each
Trustee who is a member of the Audit Committee for the Pioneer mutual funds will
receive an annual fee equal to 10% of the aggregate annual trustee's fee, except
the Committee Chair who will receive an annual trustee's fee equal to 20% of the
aggregate annual trustee's fee. Members of the Pricing Committee for the Pioneer
mutual funds, as well as any other committee which renders  material  functional
services to the Board of Trustees for the Pioneer mutual funds,  will receive an
annual fee equal to 5% of the annual  trustee's fee,  except the Committee Chair
who will receive an annual  trustee's  fee equal to 10% of the annual  trustee's
fee. Any such fee paid to affiliates  or interested  persons of PGI, PMC, PFD or
PSC are reimbursed to the Fund under its Management Contract.

The  following  table  sets  forth  certain  information  with  respect  to  the
compensation  of each  Trustee of the Fund for the fiscal year ending  September
30, 1996:

<TABLE>
<CAPTION>
                                                                        Pension or
                                                                       Retirement                 Total
                                                                         Benefits              Compensation
                                               Aggregate               Accrued as             from Fund and
                                            Compensation                  Part of              Pioneer Family
Name of Trustee                              from the Fund*           Fund's Expenses            of Funds**
- ------------------------------------------ --------------------------------- ------------------ ---------------------

- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
<S>                                        <C>                               <C>                <C>        
John F. Cogan, Jr.*                        $       500.00                    $0                 $ 11,083.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
Richard H. Egdahl, M.D.                          3,137.00                      0                   59,858.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
Margaret B.W. Graham                             3,137.00                      0                   59,858.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
John W. Kendrick                                 3,137.00                      0                   59,858.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
Marguerite A. Piret                              4,395.00                      0                   79,842.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ----------------------------------------- --------------------------------- ------------------ ---------------------
David D. Tripple*                                   500.00                     0                   11,083.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
Stephen K. West                                   3,520.00                     0                   67,850.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
John Winthrop                                     3,679.00                     0                   66,442.00
                                                ----------                     -                 -----------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
- ------------------------------------------ --------------------------------- ------------------ ---------------------
                                           $    22,005.00                    $ 0                $415,874.00
- ------------------------------------------ --------------------------------- ------------------ ---------------------
</TABLE>


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

**   Estimated for calendar year ended December 31, 1996.


                                          -11-
<PAGE>


3.       INVESTMENT ADVISER

The Fund has contracted with PMC, 60 State Street, Boston, Massachusetts, to act
as its investment  adviser.  A description of the services  provided to the Fund
under  its  management  contract  and the  expenses  paid by the Fund  under the
contract is set forth in the  Prospectus  under the caption  "Management  of the
Fund."

   
The term of the management contract is one year and is renewable annually by the
vote of a majority of the Board of Trustees of the Fund (including a majority of
the Board of Trustees who are not parties to the contract or interested  persons
of any such  parties).  The vote must be cast in person at a meeting  called for
the purpose of voting on such renewal.  The contract  terminates if assigned and
may be  terminated  without  penalty by either  party upon sixty  days'  written
notice by vote of the Board of Directors or Trustees or a majority of the Fund's
outstanding voting securities. Pursuant to the management 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 securities on the  recommendation of PMC. PMC, however,  is not
protected against liability 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 the management contract.
    

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

Performance Fee Adjustment

   
The Basic Fee is  subject  to an upward or  downward  adjustment,  depending  on
whether and to what extent, the investment  performance of the Class A shares of
the Fund for the performance  period  exceeds,  or is exceeded by, the record of
the  Standard  and Poors  Mid-Cap  400 Index of  mid-capitalization  stocks (the
"Index")  over the same period.  The Index is  comprised of 400 domestic  stocks
chosen for market size (with  company  market  capitalization  ranging from $118
million to $7.487 billion), liquidity and industry group representation. It is a
market-value  weighted  index and was the first  benchmark of midcap stock price
movements. The performance period consists of the current month and the prior 35
months  ("performance  period").  Each  percentage  point of difference (up to a
maximum of +/-10) is multiplied by a performance  adjustment rate of 0.02%.  The
maximum annualized adjustment rate is +/- 0.20%. This performance  comparison is
made at the end of each month.  One twelfth  (1/12) of this rate is then applied
to the average  net assets for the entire 
    


                                      -12-
<PAGE>

performance period, giving a dollar amount that is added to (or subtracted from)
the Basic Fee.

   
The Fund's  performance  is  calculated  based on net asset  value of the Fund's
Class A shares.  For purposes of calculating  the  performance  adjustment,  any
dividends  or capital  gains  distributions  paid by the Fund are  treated as if
reinvested  in Class A shares at the net asset  value as of the record  date for
payment.  The record  for the Index is based on change in value and is  adjusted
for any cash  distributions  from the companies  whose  securities  comprise the
Index.
    

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 Class A shares 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 Class A shares of
the Fund at net asset value as of the  payment  date and any  dividends  paid on
securities  which  comprise  the  Index  are  treated  as if  reinvested  on the
ex-dividend date.
    

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 Fund during the performance period was exceeded by the record
of the Index, the dollar amount of 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 


                                      -13-
<PAGE>

down,  but  whether  it is up or down more or less than the record of the Index.
Moreover, the comparative investment 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.

   
The Basic Fee is computed  daily,  the  performance  fee is calculated once each
month and the entire  management  fee,  allocated in  proportion  to the average
daily net assets of each class of shares, is normally paid monthly.
    

Phase-In of Performance Adjustment

   
For the period  February 1, 1996 through June 30, 1996,  the  management fee was
paid at the annual rate of 0.50% of average net assets up to $250 million, 0.48%
of the next $50 million in net assets and 0.45% on the net assets exceeding $300
million.  Because the  performance  adjustment  operated on a prospective  basis
only,  neither  investment  results nor average  assets  from  periods  prior to
February  1,  1996  were  considered  in  the  initial   implementation  of  the
performance based fee.  Additionally,  a performance  adjustment  increasing the
Basic Fee may also be made starting in January 1997 after a 12 month performance
record has accrued.  Performance adjustments that had the effect of lowering the
Basic Fee started in July 1996 after a 6 month performance record had accrued.


Accordingly, starting with July 1996, the Basic Fee took effect and was adjusted
for the  relative  performance  of the Fund and the  record  of the  Index  from
February 1, 1996 onward which had the effect of lowering the Basic Fee. 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 the average assets until the period equals
36 months.  After 36 months have elapsed from February 1, 1996, the  performance
period will consist of the most recent month plus the previous 35 months.

During  its fiscal  years  ended  September  30,  1994,  1995 and for the period
October 1, 1995 through June 30,  1996,  the Fund paid or owed total  management
fees to PMC of approximately $4,801,000, $4,701,000 and $3,550,000 pursuant to a
management  contract  previously  in effect  under  which  fees were paid at the
annual rate of 0.50% of the average net assets up to $250 million., 0.48% of the
next $50 million in assets and 0.45% on the net assets  exceeding  $300 million.
For the period  July 1, 1996  through  September  30,  1996,  under the  current
management  contract,  the Fund  paid or owed  total  management  fees to PMC of
approximately $1,385,000.

    


                                      -14-
<PAGE>



4.        UNDERWRITING AGREEMENT AND DISTRIBUTION PLANS

The Fund  entered into an  Underwriting  Agreement  with PFD.  The  Underwriting
Agreement will continue from year to year if annually  approved by the Trustees.
The  Underwriting  Agreement  provides  that  PFD  will  bear  expenses  for the
distribution of the Fund's shares, except for expenses incurred by PFD for which
it is reimbursed by the Fund under the Plan. PFD bears all expenses it incurs in
providing  services  under the  Underwriting  Agreement.  Such expenses  include
compensation to its employees and  representatives and to securities dealers for
distribution  related  services  performed  for the Fund.  PFD also pays certain
expenses in connection with the distribution of the Fund's shares, including the
cost  of  preparing,   printing  and  distributing  advertising  or  promotional
materials,   and  the  cost  of  printing  and  distributing   prospectuses  and
supplements to prospective shareholders.  The Fund bears the cost of registering
its  shares  under  federal  and state  securities  law and the laws of  certain
foreign countries.  The Fund and PFD have agreed to indemnify each other against
certain liabilities,  including liabilities under the Securities Act of 1933, as
amended.  Under the  Underwriting  Agreement,  PFD will use its best  efforts in
rendering services to the Fund.

The Fund has  adopted a plan of  distribution  pursuant  to Rule 12b-1 under the
1940 Act with  respect  to its Class A shares  (the  "Class A Plan"),  a plan of
distribution  with respect to its Class B shares (the "Class B Plan") and a plan
of  distribution  with  respect  to its  Class C  shares  (the  "Class  C Plan")
(together, the "Plans").

Class A Plan

Pursuant to the Class A Plan the Fund may reimburse PFD for its  expenditures in
financing any activity  primarily intended to result in the sale of Fund shares.
Certain  categories  of such  expenditures  have been  approved  by the Board of
Trustees and are set forth in the Prospectus.  See  "Distribution  Plans" in the
Prospectus. The expenses of the Fund pursuant to the Class A Plan are accrued on
a fiscal  year basis and may not  exceed,  with  respect to Class A shares,  the
annual rate of 0.25% of the Fund's  average  annual net assets  attributable  to
Class A.

Class B Plan

The Class B Plan provides that the Fund shall pay PFD, as the Fund's distributor
for its Class B shares,  a daily  distribution  fee equal on an annual  basis to
0.75% of the Fund's average daily net assets  attributable to Class B shares and
will pay PFD a service fee equal to 0.25% of the Fund's average daily net assets
attributable to Class B shares (which PFD will in turn pay to securities dealers
which  enter  into a sales  agreement  with  PFD at a rate of up to 0.25% of the
Fund's  average  daily  net  assets  attributable  to  Class B  shares  owned by
investors  for whom that  securities  dealer is the holder or dealer of record).
This service fee is intended to be in consideration of personal  services and/or
account  maintenance  services  rendered by 


                                      -15-
<PAGE>

the dealer  with  respect  to Class B shares.  PFD will  advance to dealers  the
first-year  service  fee at a rate  equal to 0.25% of the  amount  invested.  As
compensation  therefor,  PFD may  retain the  service  fee paid by the Fund with
respect to such shares for the first year after  purchase.  Dealers  will become
eligible for additional  service fees with respect to such shares  commencing in
the  thirteenth  month  following  purchase.  Dealers  may from  time to time be
required to meet certain other criteria in order to receive service fees. PFD or
its affiliates are entitled to retain all service fees payable under the Class B
Plan for which there is no dealer of record or for which qualification standards
have not been met as partial  consideration for personal services and/or account
maintenance  services  performed  by  PFD  or  its  affiliates  for  shareholder
accounts.

   
The  purpose  of  distribution  payments  to PFD  under  the  Class B Plan is to
compensate PFD for its  distribution  services to the Fund. PFD pays commissions
to dealers as well as  expenses of printing  prospectuses  and reports  used for
sales  purposes,  expenses with respect to the preparation and printing of sales
literature  and  other   distribution-related   expenses,   including,   without
limitation,  the cost  necessary to provide  distribution-related  services,  or
personnel,  travel office expenses and equipment. The Class B Plan also provides
that  PFD  will  receive  all  contingent   deferred  sales  charges   ("CDSCs")
attributable to Class B shares. (See  "Distributions  Plans" in the Prospectus.)
When a  broker-dealer  sells  Class B or Class C shares and  elects,  with PFD's
approval, to waive its right to receive the commission normally paid at the time
of the sale, PFD may cause all or a portion of the  distribution  fees described
above to be paid to the broker-dealer.
    


Class C Plan

The Class C Plan provides that the Fund will pay PFD, as the Fund's  distributor
for its Class C shares,  a  distribution  fee accrued daily and paid  quarterly,
equal on an  annual  basis  to 0.75% of the  Fund's  average  daily  net  assets
attributable  to Class C shares and will pay PFD a service fee equal to 0.25% of
the Fund's average daily net assets  attributable to Class C shares. PFD will in
turn pay to  securities  dealers which enter into a sales  agreement  with PFD a
distribution  fee  and  a  service  fee  at  rates  of up to  0.75%  and  0.25%,
respectively,  of the Fund's  average daily net assets  attributable  to Class C
shares  owned by  investors  for whom that  securities  dealer is the  holder or
dealer of record. The service fee is intended to be in consideration of personal
services and/or account maintenance services rendered by the dealer with respect
to Class C shares.  PFD will advance to dealers the first-year  service fee at a
rate equal to 0.25% of the amount invested.  As compensation  therefor,  PFD may
retain the  service  fee paid by the Fund with  respect  to such  shares for the
first year after  purchase.  Commencing  in the  thirteenth  month  following  a
purchase of Class C shares,  dealers will become eligible for additional service
fees at a rate of up to 0.25% of the amount invested and additional compensation
at a rate of up to 0.75% of the amount  invested  with  respect to such  shares.
Dealers  may from time to time be  required to meet  certain  other  criteria in
order to receive  service fees. PFD or its affiliates are entitled to retain all
service  fees  payable  under 


                                      -16-
<PAGE>

the  Class  C Plan  for  which  there  is no  dealer  of  record  or  for  which
qualification  standards have not been met as partial consideration for personal
services and/or account maintenance  services performed by PFD or its affiliates
for shareholder accounts.

The  purpose  of  distribution  payments  to PFD  under  the  Class C Plan is to
compensate PFD for its distribution  services with respect to the Class C shares
of the Fund.  PFD pays  commissions  to dealers as well as  expenses of printing
prospectuses  and reports used for sales purposes,  expenses with respect to the
preparation  and  printing of sales  literature  and other  distribution-related
expenses,   including,   without  limitation,  the  cost  necessary  to  provide
distribution-related   services,  or  personnel,   travel  office  expenses  and
equipment.  The  Class C Plan  also  provides  that PFD will  receive  all CDSCs
attributable to Class C shares. (See "Distributions Plans" in the Prospectus.)

General

In accordance  with the terms of the Plans,  PFD provides to the Fund for review
by the Trustees a quarterly  written  report of the amounts  expended  under the
respective  Plan and the purpose for which such  expenditures  were made. In the
Trustees'  quarterly  review of the  Plans,  they will  consider  the  continued
appropriateness  and the  level  of  reimbursement  or  compensation  the  Plans
provide.

No  interested  person of the Fund,  nor any  Trustee  of the Fund who is not an
interested person of the Fund, has any direct or indirect  financial interest in
the  operation  of the Plans  except to the extent  that PFD and  certain of its
employees  may be deemed to have such an  interest  as a result of  receiving  a
portion of the  amounts  expended  under the Plans by the Fund and except to the
extent certain officers may have an interest in PFD's ultimate parent, PGI.

The Plans were adopted by a majority  vote of the Board of  Trustees,  including
all of the Trustees who are not, and were not at the time they voted, interested
persons  of the Fund,  as  defined in the 1940 Act (none of whom had or have any
direct or indirect  financial  interest in the operation of the Plans),  cast in
person at a meeting called for the purpose of voting on the Plans.  In approving
the Plans, the Trustees identified and considered a number of potential benefits
which the Plans may  provide.  The Board of  Trustees  believes  that there is a
reasonable  likelihood  that the Plans will benefit each Fund and their  current
and future shareholders. Under their terms, the Plans remain in effect from year
to year provided such  continuance is approved  annually by vote of the Trustees
in the  manner  described  above.  The  Plans  may not be  amended  to  increase
materially the annual  percentage  limitation of average net assets which may be
spent for the services described therein without approval of the shareholders of
the Fund  affected  thereby,  and material  amendments of the Plans must also be
approved by the Trustees in the manner described above. A Plan may be terminated
at any time,  without  payment of any  penalty,  by vote of the  majority of the
Trustees  who are not  interested  persons  of the Fund and  have no  direct  or
indirect  financial  interest in the  


                                      -17-
<PAGE>

operations  of the Plan,  or by a vote of a majority of the  outstanding  voting
securities of the  respective  Class of the Fund (as defined in the 1940 Act). A
Plan will automatically  terminate in the event of its assignment (as defined in
the 1940 Act).

   
During the  fiscal  year ended  September  30,  1996,  the Fund  incurred  total
distribution  fees pursuant to the Fund's Class A Plan, Class B Plan and Class C
Plan respectively,  as follows: $1,846,000, $9,000 and $1,400. Distribution fees
were paid by the Fund to PFD in  reimbursement  of expenses related to servicing
of shareholder accounts and to compensating dealers and sales personnel.


Upon redemption,  Class A shares may be subject to a 1% CDSC, Class B shares are
subject to a CDSC at a rate declining from a maximum 4% of the lower of the cost
or market  value of the shares and the Class C shares are  subject to a 1% CDSC.
During  the  fiscal  year  ended  September  30,  1996,  CDSCs in the  amount to
approximately  $500 were paid to PFD in  reimbursement  of  expenses  related to
servicing of shareholders'  accounts and compensation  paid to dealers and sales
personnel.
    
5.        SHAREHOLDER SERVICING/TRANSFER AGENT

The Fund has contracted with PSC, 60 State Street, Boston, Massachusetts, to act
as  shareholder  servicing  and  transfer  agent  for the  Fund.  This  contract
terminates  if assigned and may be  terminated  without  penalty by either party
upon ninety days'  written  notice by vote of its Board of Directors or Trustees
or a majority of its outstanding voting securities.

Under  the  terms  of its  contract  with the  Fund,  PSC  services  shareholder
accounts,  and  its  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  account records
and responding to shareholder inquiries.

   
PSC  receives  an annual  fee of $22.75  for each  Class A,  Class B and Class C
shareholder  account from the Fund as  compensation  for the services  described
above.  PSC  is  also  reimbursed  by  the  Fund  for  its  cash   out-of-pocket
expenditures.  The  annual  fee is set at an  amount  determined  by  vote  of a
majority  of the  Trustees  (including  a majority of the  Trustees  who are not
parties to the contract with PSC or  interested  persons of any such parties) to
be  comparable  to  fees  for  such  services  being  paid by  other  investment
companies. The Fund may compensate entities which have agreed to provide certain
sub-accounting  services regarding  shareholder  records,  specific  transaction
processing  and services.  Any such payments by the Fund would be in lieu of the
per account fee which would otherwise be paid by the Fund to PSC.
    




                                      -18-
<PAGE>




6.        CUSTODIAN

Brown Brothers  Harriman & Co. (the  "Custodian") is the custodian of the Fund's
assets. The Custodian's responsibilities include safekeeping and controlling the
Fund's cash and securities, handling the receipt and delivery of securities, and
collecting interest and dividends on the Fund's investments.  The Custodian does
not determine the investment policies of the Fund or decide which securities the
Fund will buy or sell. The Fund may,  however,  invest in securities,  including
repurchase  agreements,  issued by the Custodian and may deal with the Custodian
as a principal in securities transactions. Portfolio securities may be deposited
into the Federal Reserve-Treasury Department Book Entry System or the Depository
Trust Company.

7.        PRINCIPAL UNDERWRITER

   
PFD serves as the  principal  underwriter  for the Fund in  connection  with the
continuous  offering  of the  Class A,  Class B and  Class C shares of the Fund.
During the fiscal  years  ended  September  30,  1994,  September  30,  1995 and
September 30, 1996 total underwriting commissions paid to PFD in connection with
the  offering  of Class A shares of the Fund were,  respectively,  approximately
$2,714,000,  $1,409,000 and $1,001,000.  Commissions reallowed to dealers during
the same periods were approximately $2,359,000, $1,224,000 and $870,000.
    

The Fund will not generally issue Fund shares for consideration other than cash.
At  the  Fund's  sole  discretion,   however,  it  may  issue  Fund  shares  for
consideration  other than cash in  connection  with a bona fide  reorganization,
statutory merger, or other acquisition of portfolio securities.

8.       INDEPENDENT PUBLIC ACCOUNTANTS

Arthur Andersen LLP, One International  Place,  Boston,  Massachusetts 02110, is
the Fund's independent public accountants,  providing audit services, tax return
review,  and  assistance  and  consultation  with respect to the  preparation of
filings with the Commission.

9.       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 Fund's  management
contract.  In selecting  brokers or dealers,  PMC will consider various relevant
factors,  including,  but not limited to, the size and type of the  transaction;
the nature and  character  of the markets for 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.

                                      -19-
<PAGE>

PMC may select  broker-dealers  which provide brokerage and/or research services
to the Fund and/or other investment  companies  managed by PMC. In addition,  if
PMC  determines  in good  faith  that the  amount of  commissions  charged  by a
broker-dealer  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-dealer in an amount greater than the amount another firm may charge. Such
services may 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  analyses and
reports concerning 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). PMC maintains a listing of broker-dealers who provide such services
on a regular basis. However, because it is anticipated that many transactions on
behalf of the Fund and other investment companies managed by PMC are placed with
broker-dealers  (including  broker-dealers on the listing) without regard to the
furnishing of such  services,  it is not possible to estimate the  proportion of
such  transactions  directed to such dealers  solely  because such services were
provided.

The  research  received  from  broker-dealers  may be useful to PMC in rendering
investment management services to the Fund as well as other investment companies
managed  by PMC,  although  not all such  research  may be  useful  to the Fund.
Conversely,  such  information  provided by brokers or dealers who have executed
transaction  orders on behalf of such other PMC  clients may be useful to PMC in
carrying out its  obligations  to the Fund. The receipt of such research has not
reduced PMC's normal independent research activities; however, it enables PMC to
avoid the additional  expenses  which might  otherwise be incurred if it were to
attempt to develop comparable information through its own staff.

In circumstances  where two or more  broker-dealers  offer comparable prices and
executions,  preference may be given to a broker-dealer which has sold shares of
the Fund as well as shares of other investment  companies or accounts managed by
PMC.  This  policy  does  not  imply  a  commitment  to  execute  all  portfolio
transactions through all broker-dealers that sell shares of the Fund.

The Trustees  periodically  review PMC's performance of its  responsibilities in
connection with the placement of portfolio transactions on behalf of the Fund.

In addition to the Fund, PMC acts as investment  adviser to other Pioneer mutual
funds and certain private accounts with investment  objectives  similar to those
of the Fund.  Securities  frequently meet the investment objectives of the Fund,
such other  funds and such  private  accounts.  In such cases,  the  decision to
recommend  a purchase to one fund or account  rather than  another is based on a
number of  factors.  The  determining  factors  in most  cases are the amount of
securities of the issuer then outstanding, the value of those securities and the
market for them.  Other  factors  considered in the  investment  recommendations
include  other  


                                      -20-
<PAGE>

investments  which each fund or account  presently has in a particular  industry
and the availability of investment funds in each fund or account.

It is possible that at times identical  securities will be held by more than one
fund  and/or  account.  However,  positions  in the same  issue may vary and the
length of time that any fund or account may choose to hold its investment in the
same issue may likewise  vary. To the extent that the Fund,  another mutual fund
in the  Pioneer  group or a private  account  managed  by PMC may not be able to
acquire as large a position in such security as it desires, it may have to pay a
higher price for the security.  Similarly, the Fund may not be able to obtain as
large an  execution  of an order to sell or as high a price  for any  particular
portfolio  security if PMC decides to sell on behalf of another account the same
portfolio  security at the same time. On the other hand, if the same  securities
are  bought  or sold at the same  time by more  than one  fund or  account,  the
resulting  participation in volume  transactions could produce better executions
for the Fund or the  account.  In the event more than one account  purchases  or
sells the same  security on a given date,  the purchases and sales will normally
be made as  nearly  as  practicable  on a pro rata  basis in  proportion  to the
amounts desired to be purchased or sold by each.

   
During the fiscal  years  ended  September  30,  1994,  September  30,  1995 and
September  30,  1996  the  Fund  paid  aggregate   brokerage  and   underwriting
commissions of approximately $494,000, $857,000 and $2,105,000.
    

10.      TAX STATUS

   
 It is the Fund's  policy to meet the  requirements  of Subchapter M of the Code
for qualification as a regulated  investment company.  These requirements relate
to the sources of the Fund's income,  the  diversification of its assets and the
distribution  of  its  income  to  shareholders.  If the  Fund  meets  all  such
requirements and distributes to its shareholders,  in accordance with the Code's
timing requirements, all investment company taxable income and net capital gain,
if any,  which it earns,  the Fund will be relieved of the  necessity  of paying
federal income tax.


In order to qualify as a regulated  investment  company under  Subchapter M, the
Fund must,  among other  things,  derive at least 90% of its annual gross income
from dividends,  interest, payments with respect to securities loans, gains from
the sale or other disposition of stock,  securities or foreign  currencies,  and
certain other income (the "90% income  test"),  limit its gains from the sale of
stock, securities and certain other positions held for less than three months to
less than 30% of its annual  gross  income (the "30% test") and satisfy  certain
annual distribution and quarterly diversification requirements.

Dividends from investment company taxable income,  which includes net investment
income, net short-term capital gain in excess of net long-term capital loss, and
certain net foreign  exchange  gains,  are taxable as ordinary  income,  whether
received  in cash  or  reinvested  in  additional  shares.  Dividends  from  net
long-term capital gain in excess of net short-term 


                                      -21-
<PAGE>

capital  loss,  if any,  whether  received in cash or  reinvested  in additional
shares,  are taxable to the Fund's  shareholders as long-term  capital gains for
federal  income tax purposes  without regard to the length of time shares of the
Fund have been held. The federal income tax status of all distributions  will be
reported to shareholders annually.

Any  dividend  declared  by the Fund in  October,  November  or December as of a
record  date in such a month  and paid  during  the  following  January  will be
treated for federal income tax purposes as received by  shareholders on December
31 of the calendar year in which it is declared.

Foreign  exchange  gains and  losses  realized  by the Fund in  connection  with
certain  transactions  involving foreign  currency-denominated  debt securities,
foreign  currency  forward  contracts,   foreign  currencies,   or  payables  or
receivables  denominated in a foreign currency are subject to Section 988 of the
Code,  which  generally  causes  such gains and losses to be treated as ordinary
income  and  losses  and  may  affect  the  amount,   timing  and  character  of
distributions  to  shareholders.  Any such  transactions  that are not  directly
related to the Fund's  investments in stock or securities may need to be limited
in order to enable the Fund to satisfy the  limitations  described in the second
paragraph  above  that are  applicable  to the income or gains  recognized  by a
regulated  investment  company. If the net foreign exchange loss for a year were
to exceed the Fund's investment  company taxable income (computed without regard
to such loss), the resulting ordinary loss for such year would not be deductible
by the Fund or its shareholders in future years.

If the Fund acquires any equity interest (under proposed regulations,  generally
including not only stock but also an option to acquire stock) in certain foreign
corporations that receive at least 75% of their annual gross income from passive
sources (such as interest,  dividends, rents, royalties or capital gain) or hold
at least 50% of their  assets  in  investments  producing  such  passive  income
("passive foreign investment  companies"),  the Fund could be subject to federal
income tax and additional  interest charges on "excess  distributions"  received
from such  companies or gain from the sale of stock in such  companies,  even if
all income or gain actually  received by the Fund is timely  distributed  to its
shareholders. The Fund would not be able to pass through to its shareholders any
credit  or  deduction  for such a tax.  Certain  elections  may,  if  available,
ameliorate these adverse tax  consequences,  but any such election would require
the Fund to recognize  taxable income or gain without the concurrent  receipt of
cash.  The  Fund may  limit  and/or  manage  its  holdings  in  passive  foreign
investment  companies to minimize its tax  liability or maximize its return from
these investments.

If the Fund  invests in certain  pay-in-kind  securities  ("PIKs"),  zero coupon
securities,  deferred interest  securities or, in general,  any other securities
with  original  issue  discount  (or with market  discount if the Fund elects to
include  market  discount in income  currently),  the Fund must accrue income on
such  investments  for each taxable year,  which  generally will be prior to the
receipt of the corresponding cash payments.  However,  the Fund must distribute,
at least annually,  all or substantially  all of its net income,  including such
accrued income,  to 


                                      -22-
<PAGE>

shareholders  to qualify as a regulated  investment  company  under the Code and
avoid Federal income and excise taxes.  Therefore,  the Fund may have to dispose
of its portfolio  securities  under  disadvantageous  circumstances  to generate
cash,  or may  have to  leverage  itself  by  borrowing  the  cash,  to  satisfy
distribution requirements.

For federal  income tax  purposes,  the Fund is permitted to carry forward a net
capital loss for any year to offset its capital gains,  if any, during the eight
years following the year of the loss. To the extent subsequent capital gains are
offset by such losses,  they would not result in federal income tax liability to
the  Fund  and  therefore  are  not  expected  to  be  distributed  as  such  to
shareholders.  As of the end of its most recent  taxable  year,  the Fund had no
capital loss carryforwards.

At the time of an investor's  purchase of Fund shares, a portion of the purchase
price may be attributable  to realized or unrealized  appreciation in the Fund's
portfolio or undistributed taxable income of the Fund. Consequently,  subsequent
distributions on these shares from such appreciation or income may be taxable to
such  investor  even if the net asset  value of the  investor's  shares is, as a
result of the  distributions,  reduced below the investor's cost for such shares
and the  distributions  economically  represent  a return  of a  portion  of the
investment.

Redemptions and exchanges are taxable events. Any loss realized by a shareholder
upon the redemption,  exchange or other disposition of shares with a tax holding
period of six months or less will be treated as a long-term  capital loss to the
extent of any amounts treated as  distributions  of long-term  capital gain with
respect to such shares.

In addition,  if Class A shares  redeemed or  exchanged  have been held for less
than 91 days, (1) in the case of a  reinvestment  at net asset value pursuant to
the reinvestment privilege, the sales charge paid on such shares is not included
in their tax basis under the Code, and (2) in the case of an exchange,  all or a
portion of the sales  charge  paid on such  shares is not  included in their tax
basis under the Code, to the extent a sales charge that would otherwise apply to
the shares  received is reduced  pursuant to the exchange  privilege.  In either
case,  the  portion  of the sales  charge not  included  in the tax basis of the
shares  redeemed or  surrendered  in an exchange is included in the tax basis of
the shares acquired in the  reinvestment  or exchange.  Losses on redemptions or
other  dispositions  of shares may be disallowed  under "wash sale" rules in the
event of other  investments  in the  Fund  (including  those  made  pursuant  to
reinvestment of dividends and/or capital gain distributions)  within a period of
61 days  beginning 30 days before and ending 30 days after a redemption or other
disposition of shares. In such a case, the disallowed  portion of any loss would
be  included  in the  federal  tax  basis of the  shares  acquired  in the other
investments.

Certain foreign currency forward contracts may cause the Fund to recognize gains
or losses from marking-to-market at the end of its taxable year even though such
forward  contracts may not have been performed or closed out. Forward  contracts
relating to foreign currency are generally  subject to Section 988, as described
above, and may accordingly  produce  


                                      -23-
<PAGE>

ordinary income or loss.  Losses on certain forward  contracts and/or offsetting
positions  (portfolio  securities or other  positions  with respect to which the
Fund's  risk  of  loss  is  substantially  diminished  by  one or  more  forward
contracts) may also be deferred under the tax straddle rules of the Code,  which
may also affect the  characterization  of capital  gains or losses from straddle
positions and certain  successor  positions as long-term or short-term.  Certain
tax  elections may be available  that would enable the Fund to  ameliorate  some
adverse  effects of the tax rules  described  in this  paragraph.  The tax rules
applicable to forward contracts and straddles may affect the amount,  timing and
character  of the Fund's  income and  losses and hence of its  distributions  to
shareholders.

For  purposes of the 70%  dividends-received  deduction  generally  available to
corporations  under the Code,  dividends received by the Fund from U.S. domestic
corporations  in respect of any share of stock with a tax  holding  period of at
least  46 days  (91  days in the case of  certain  preferred  stock)  held in an
unleveraged  position and  distributed and designated by the Fund may be treated
as  qualifying  dividends.  Any  corporate  shareholder  should  consult its tax
advisor  regarding  the  possibility  that its tax  basis in its  shares  may be
reduced, for federal income tax purposes, by reason of "extraordinary dividends"
received  with  respect to the shares.  In order to qualify  for the  deduction,
corporate  shareholders must meet the minimum holding period  requirement stated
above with respect to their Fund shares,  taking into account any holding period
reductions from certain hedging or other transactions or positions that diminish
their risk of loss with  respect to their Fund  shares,  and,  if they borrow to
acquire Fund  shares,  they may be denied a portion of the  dividends-  received
deduction.  The entire qualifying  dividend,  including the otherwise deductible
amount,  will be included in determining  the excess (if any) of a corporation's
adjusted current earnings over its alternative minimum taxable income, which may
increase a corporation's alternative minimum tax liability.

The Fund may be  subject  to  withholding  and other  taxes  imposed  by foreign
countries  (including  taxes on  interest,  dividends  and  capital  gains) with
respect to its investments in those countries.  Tax conventions  between certain
countries  and the U.S.  may reduce or eliminate  such taxes in some cases.  The
Fund does not expect to satisfy  the  requirements  for  passing  through to its
shareholders  their pro rata shares of qualified foreign taxes paid by the Fund,
with the result that  shareholders  will not  include  such taxes in their gross
incomes and will not be entitled to a tax  deduction or credit for such taxes on
their own tax returns.

Different tax treatment, including penalties on certain excess contributions and
deferrals, certain pre-retirement and post-retirement distributions, and certain
prohibited  transactions,  is  accorded  to  accounts  maintained  as  qualified
retirement  plans.  Shareholders  should  consult  their tax  advisers  for more
information.

Federal law requires  that the Fund  withhold (as "backup  withholding")  31% of
reportable  payments,  including  dividends,  capital  gain  dividends  and  the
proceeds of redemptions  (including  exchanges) and  repurchases to shareholders
who have not complied with Internal 


                                      -24-
<PAGE>

Revenue  Service  ("IRS")  regulations.  In  order  to  avoid  this  withholding
requirement,  shareholders  must certify on their  Account  Applications,  or on
separate  IRS Forms  W-9,  that the  Social  Security  Number or other  Taxpayer
Identification Number they provide is their correct number and that they are not
currently  subject to backup  withholding,  or that they are exempt  from backup
withholding.  The Fund may  nevertheless  be required to withhold if it receives
notice from the IRS or a broker that the number  provided is incorrect or backup
withholding is applicable as a result of previous  underreporting of interest or
dividend income.

If, as anticipated,  the Fund qualifies as a regulated  investment company under
the Code,  it will not be required to pay any  Massachusetts  income,  corporate
excise or franchise taxes or any Delaware corporation income tax.

The  description of certain  federal tax  provisions  above relates only to U.S.
federal income tax consequences for shareholders who are U.S. persons, i.e. U.S.
citizens or residents or U.S. corporations, partnerships, trusts or estates, and
who are subject to U.S.  federal income tax. This  description  does not address
the special tax rules that may be applicable  to particular  types of investors,
such as financial  institutions,  insurance  companies,  securities  dealers, or
tax-exempt or  tax-deferred  plans,  accounts or entities.  Investors other than
U.S.  persons  may be subject to  different  U.S.  tax  treatment,  including  a
possible 30%  non-resident  alien U.S.  withholding  tax (or non- resident alien
withholding tax at a lower treaty rate) on amounts treated as ordinary dividends
from the Fund and, unless an effective IRS Form W-8 or authorized substitute for
Form W-8 is on file, to 31% backup  withholding  on certain other  payments from
the Fund.  Shareholders  should  consult their own tax advisers on these matters
and on state, local and other applicable tax laws.
    

11.       DESCRIPTION OF SHARES

The Fund's  Declaration  of Trust permits the Board of Trustees to authorize the
issuance of an  unlimited  number of full and  fractional  shares of  beneficial
interest  which may be divided  into such  separate  series as the  Trustees may
establish.  Currently,  the Fund consists of only one series.  The Trustees may,
however,  establish additional series of shares in the future, and may divide or
combine the shares  into a greater or lesser  number of shares  without  thereby
changing the proportionate  beneficial interests in the Fund. The Declaration of
Trust further  authorizes  the Trustees to classify or reclassify  any series of
the  shares  into one or more  classes.  Pursuant  thereto,  the  Trustees  have
authorized  the issuance of three  classes of shares of the Fund,  designated as
Class A shares,  Class B and Class C shares.  Each  share of a class of the Fund
represents an equal  proportionate  interest in the assets of the Fund allocable
to that class.  Upon liquidation of the Fund,  shareholders of each class of the
Fund are  entitled to share pro rata in the Fund's net assets  allocable to such
class available for distribution to shareholders. The Fund reserves the right to
create and issue  additional  series or  classes  of  


                                      -25-
<PAGE>

shares,  in which case the shares of each  class of a series  would  participate
equally in the  earnings,  dividends  and assets  allocable to that class of the
particular series.

Shareholders  are  entitled  to one vote for each share held and may vote in the
election  of  Trustees  and  on  other   matters   submitted  to  a  meeting  of
shareholders.  Although  Trustees are not elected annually by the  shareholders,
shareholders have, under certain circumstances,  the right to remove one or more
Trustees.

The shares of each series of the Fund are entitled to vote separately to approve
investment  advisory  agreements  or changes  in  investment  restrictions,  but
shareholders  of all series  vote  together in the  election  and  selection  of
Trustees and  accountants.  Shares of all series of the Fund vote  together as a
class on matters  that affect all series of the Fund in  substantially  the same
manner. As to matters affecting a single series or class,  shares of such series
or class will vote separately.  No amendment  adversely  affecting the rights of
shareholders  may be  made  to the  Fund's  Declaration  of  Trust  without  the
affirmative  vote of a majority of its  shares.  Shares  have no  preemptive  or
conversion rights.  Shares are fully paid and non-assessable by the Fund, except
as stated below.

12.      CERTAIN LIABILITIES

The  Fund  (previously  named  Pioneer  Three)  was  previously  organized  as a
Massachusetts business trust and was reorganized as a Delaware business trust on
January 31, 1996,  pursuant to an Agreement and Plan of Reorganization  approved
by the  shareholders  of the Fund.  As a  Delaware  business  trust,  the Fund's
operations  are governed by its  Declaration  of Trust dated January 31, 1996. A
copy of the fund's Certificate of Trust, also dated January 31, 1996, is on file
with the  office of the  Secretary  of State of  Delaware.  Generally,  Delaware
business trust  shareholders  are not personally  liable for  obligations of the
Delaware business trust under Delaware law. The Delaware Business Trust Act (the
"Delaware  Act") provides that a shareholder of a Delaware  business trust shall
be entitled to the same  limitation  of liability  extended to  shareholders  of
private  for-profit  corporations.  The Fund's  Declaration  of Trust  expressly
provides  that  the  Fund is  organized  under  the  Delaware  Act and  that the
Declaration of Trust is to be governed by Delaware law. There is  nevertheless a
possibility  that a Delaware  business trust,  such as the Fund,  might become a
party to an action in another state whose courts  refused to apply Delaware law,
in which  case  the  trust's  shareholders  could  become  subject  to  personal
liability.

To guard  against this risk,  the  Declaration  of Trust (i) contains an express
disclaimer  of  shareholder  liability for acts or  obligations  of the Fund and
provides  that  notice  of such  disclaimer  may be  given  in  each  agreement,
obligation or  instrument  entered into or executed by the Fund or its Trustees,
(ii) provides for the  indemnification  out of Fund property of any shareholders
held personally liable for any obligations of the Fund or any series of the Fund
and (iii) provides that the Fund shall, upon request,  assume the defense of any
claim made against any  shareholder  for any act or  obligation  of the Fund and
satisfy  any 


                                      -26-
<PAGE>

judgment  thereon.  Thus,  the risk of a shareholder  incurring  financial  loss
beyond his or her  investment  because of  shareholder  liability  is limited to
circumstances  in which all of the  following  factors are present:  (1) a court
refused to apply  Delaware  law; (2) the  liability  arose under tort law or, if
not, no  contractual  limitation  of liability  was in effect;  and (3) the Fund
itself would be unable to meet its  obligations.  In light of Delaware  law, the
nature of the Fund's business and the nature of its assets, the risk of personal
liability to a Fund shareholder is remote.

The Declaration of Trust further  provides that the Fund shall indemnify each of
its Trustees and officers against  liabilities and expenses  reasonably incurred
by them, in connection with, or arising out of, any action,  suit or proceeding,
threatened against or otherwise  involving such Trustee or officer,  directly or
indirectly,  by reason of being or having been a Trustee or officer of the Fund.
The Declaration of Trust does not authorize the Fund to indemnify any Trustee or
officer  against any liability to which he or she would  otherwise be subject by
reason of or for willful  misfeasance,  bad faith,  gross negligence or reckless
disregard of such person's duties.


   
13.      LETTER OF INTENT (Class A only)

A Letter of Intent (a "Letter") may be  established  by completing the Letter of
Intent  section  of  the  Account   Application.   When  you  sign  the  Account
Application,  you agree to  irrevocably  appoint  PSC your  attorney-in-fact  to
surrender  for  redemption  any or all shares  held in escrow with full power of
substitution.  A Letter of Intent is not a binding  obligation upon the investor
to purchase, or the Fund to sell, the full amount indicated.


If the total purchases, less redemptions,  exceed the amount specified under the
Letter of  Intention  and are in an amount  which  would  qualify  for a further
quantity discount, all transactions will be recomputed on the expiration date of
the Letter of Intention to effect the lower sales charge.  Any difference in the
sales charge resulting from such  recomputation  will be either delivered to you
in cash or invested in additional shares at the lower sales charge.  The dealer,
by signing  the  Account  Application,  agrees to return to PFD, as part of such
retroactive  adjustment,  the excess of the commission  previously  reallowed or
paid to the dealer  over that which is  applicable  to the actual  amount of the
total purchases under the Letter of Intention.

If the total  purchases,  less  redemptions,  are less than the amount specified
under the Letter of Intention,  you must remit to PFD any difference between the
sales  charge  on the  amount  actually  purchased  and  the  amount  originally
specified in the Letter of Intention  section of the Account  Application.  When
the  difference  is paid,  the shares held in escrow will be  deposited  to your
account.  If you do not pay the  difference in sales charge within 20 days after
written request from PFD or your dealer, PSC, after receiving  instructions from
PFD, will redeem the appropriate  number of shares held in escrow to realize the
difference and release any excess.  See "How to Purchase Fund Shares - Letter of
Intent" in the Prospectus for more information.
    
                                      -27-
<PAGE>




14.      SYSTEMATIC WITHDRAWAL PLAN

The  Systematic  Withdrawal  Plan  ("SWP") is designed  to provide a  convenient
method of receiving  fixed payments at regular  intervals from Class A shares of
the Fund  deposited by the applicant  under this SWP. The applicant must deposit
or purchase  for deposit with PSC shares of the Fund having a total value of not
less than $10,000.  Periodic checks of $50 or more will be deposited  monthly or
quarterly  directly  into a bank account  designated by the applicant or will be
sent by check to the  applicant,  or any  person  designated  by him  monthly or
quarterly.  Withdrawals  from Class B share  accounts  are limited to 10% of the
value of the account at the time the SWP is implemented.

Any income dividends or capital gains distributions on shares under the SWP will
be credited to the SWP account on the payment date in full and fractional shares
at the net asset value per share in effect on the record date.

SWP payments are made from the proceeds of the  redemption  of shares  deposited
under the SWP in a SWP account. To the extent that such redemptions for periodic
withdrawals  exceed  dividend  income  reinvested  in  the  SWP  account,   such
redemptions  will  reduce  and may  ultimately  exhaust  the  number  of  shares
deposited  in  the  Plan  account.   Redemptions  are  taxable  transactions  to
shareholders.  In  addition,  the amounts  received by a  shareholder  cannot be
considered  as yield or income  on his or her  investment  because  part of such
payments may be a return of his or her investment.

The SWP may be terminated at any time (1)by written notice to PSC or from PSC to
the  shareholder;  (2)upon  receipt  by  PSC  of  appropriate  evidence  of  the
shareholder's death; or (3)when all shares under the Plan have been redeemed.

15.      DETERMINATION OF NET ASSET VALUE

The net asset value per share of each class of the Fund is  determined as of the
close  of  regular  trading  on the New York  Stock  Exchange  (the  "Exchange")
(currently  4:00 p.m.,  Eastern  Time) on each day on which the Exchange is open
for trading.  As of the date of this  Statement of Additional  Information,  the
Exchange is open for trading  every weekday  except for the following  holidays:
New Year's Day,  Presidents' Day, Good Friday,  Memorial Day,  Independence Day,
Labor Day,  Thanksgiving Day and Christmas Day. The net asset value per share of
each class of the Fund is also determined on any other day in which the level of
trading in its portfolio  securities is  sufficiently  high that the current net
asset  value per share might be  materially  affected by changes in the value of
its  portfolio  securities.  The Fund is not required to determine its net asset
value per  share on any day in which no  purchase


                                      -29-
<PAGE>

orders in good order for the shares of the Fund are  received  and no shares are
tendered for redemption.

The net asset  value per share of each class of the Fund is  computed  by taking
the value of all of the Fund's assets  attributable to a class,  less the Fund's
liabilities  attributable  to  a  class,  and  dividing  it  by  the  number  of
outstanding  shares of the class.  For purposes of determining  net asset value,
expenses of the classes of the Fund are accrued daily.

Securities that have not traded on the date of valuation or securities for which
sales prices are not generally  reported are valued at the mean between the last
bid and asked  prices.  Securities  for which no market  quotations  are readily
available  (excluding  those whose trading has been suspended) will be valued at
fair value as  determined  in good faith by the Board of Trustees,  although the
actual  computations  may be made by persons acting pursuant to the direction of
the Board of Trustees.

The Fund's maximum  offering price per Class A share is determined by adding the
maximum sales charge to the net asset value per Class A share. Class B and Class
C shares are offered at net asset value  without  the  imposition  of an initial
sales charge.

16.      INVESTMENT RESULTS

Quotations, Comparisons, and General Information

From time to time,  in  advertisements,  in sales  literature,  or in reports to
shareholders,  the  past  performance  of the  Fund  may be  illustrated  and/or
compared with that of other mutual funds with similar investment objectives, and
to stock or other  relevant  indices.  For  example,  total return of the Fund's
classes  may be compared to  rankings  prepared by Lipper  Analytical  Services,
Inc.,  a widely  recognized  independent  service  which  monitors  mutual  fund
performance;  the  Standard  & Poors  Mid-Cap  400 Index  (described  above);the
Standard & Poor's 500 Stock Index ("S&P 500"),  an index of unmanaged  groups of
common stock; the Dow Jones Industrial Average, a recognized  unmanaged index of
common stocks of 30 industrial  companies listed on the New York Stock Exchange;
or The Frank Russell Indexes  ("Russell  1000," "2000," "2500,"  "3000,") or the
Wilshire Total Market Value Index ("Wilshire  5000"),  two recognized  unmanaged
indexes of broad based common stocks.

In  addition,  the  performance  of the  classes of the Fund may be  compared to
alternative  investment or savings  vehicles  and/or to indexes or indicators of
economic activity,  e.g., inflation or interest rates.  Performance rankings and
listings reported in newspapers or national business and financial publications,
such as Barron's,  Business Week, Consumers Digest, Consumer Reports,  Financial
World, Forbes, Fortune,  Investors Business Daily,  Kiplinger's Personal Finance
Magazine,  Money Magazine, New York Times, Smart Money, USA Today, U.S. News and
World Report, The Wall Street Journal,  and Worth may also be cited (if the Fund
is  listed  in any  such  publication)  or  used  for  comparison,  as  well  as
performance listings and 


                                      -30-
<PAGE>

rankings from various  other  sources  including  Bloomberg  Financial  Markets,
CDA/Wiesenberger, Donoghue's Mutual Fund Almanac, Investment Company Data, Inc.,
Johnson's Charts, Kanon Bloch Carre and Co., Lipper Analytical  Services,  Inc.,
Micropal,  Inc., Morningstar,  Inc., Schabacker Investment Management and Towers
Data Systems, Inc.

In  addition,  from  time  to  time  quotations  from  articles  from  financial
publications  such as those listed above may be used in  advertisements in sales
literature, or in reports to shareholders of the Fund.

The Fund may also present, from time to time,  historical  information depicting
the value of a  hypothetical  account  in one or more  classes of the Fund since
such Fund's inception.

In  presenting  investment  results,  the Fund may also  include  references  to
certain  financial  planning  concepts,  including  (a) an  investor's  need  to
evaluate his financial  assets and  obligations to determine how much to invest;
(b) his need to analyze the objectives of various investments to determine where
to invest;  and (c) his need to analyze his time frame for future  capital needs
to determine how long to invest. The investor controls these three factors,  all
of which affect the use of investments in building assets.

One of the primary  methods  used to measure the  performance  of a class of the
Fund is "total  return."  "Total return" will normally  represent the percentage
change in value of an account, or of a hypothetical investment in a class of the
Fund, over any period up to the lifetime of that class of the Fund. Total return
calculations  will usually assume the  reinvestment of all dividends and capital
gains  distributions and will be expressed as a percentage  increase or decrease
from an  initial  value,  for the  entire  period  or for one or more  specified
periods within the entire period.  Total return  percentages for periods of less
than one year will usually be annualized;  total return  percentages for periods
longer than one year will usually be accompanied by total return percentages for
each year within the period and/or by the average annual compounded total return
for the  period.  The income and  capital  components  of a given  return may be
separated  and  portrayed  in a  variety  of ways in order to  illustrate  their
relative  significance.  Performance  may also be  portrayed in terms of cash or
investment values,  without  percentages.  Past performance cannot guarantee any
particular future result.

The Fund's  average  annual total return  quotations  for each of its classes as
that  information  may  appear  in the  Fund's  Prospectus,  this  Statement  of
Additional  Information  or in advertising  are  calculated by standard  methods
prescribed by the Commission.

Standardized Average Annual Total Return Quotations

Average  annual total return  quotations for Class A, Class B and Class C shares
are computed by finding the average annual compounded rates of return that would
cause  a  hypothetical  investment  in the  class  made  on the  first  day of a
designated  period (assuming all dividends and  distributions are reinvested) to
equal the ending  redeemable value of such  hypothetical 


                                      -31-
<PAGE>

investment  on the last day of the  designated  period  in  accordance  with the
following formula:

                            P(1+T)n = ERV

Where:            P        =        a  hypothetical  initial  payment of $1,000,
                                    less the  maximum  sales  load of $57.50 for
                                    Class A shares or the  deduction of the CDSC
                                    for Class B and Class C shares at the end of
                                    the period.

                  T        =        average annual total return

                  n        =        number of years

                  ERV      =        ending redeemable value of the hypothetical 
                                    $1000 initial payment made at the
                                    beginning of the designated period 
                                    (or fractional portion thereof)

For  purposes of the above  computation,  it is assumed that all  dividends  and
distributions  made by the Fund are  reinvested  at net asset  value  during the
designated  period.  The average annual total return  quotation is determined to
the nearest 1/100 of 1%.

In determining the average annual total return  (calculated as provided  above),
recurring  fees,  if any,  that are  charged to all  shareholder  accounts  of a
particular  class are taken into  consideration.  For any account fees that vary
with the size of the  account,  the account  fee used for  purposes of the above
computation  is assumed  to be the fee that  would be charged to a class's  mean
account size.

   
The total  returns  for each  Class of shares of the Funds as of  September  30,
1996, are as follows:


                           Average Annual Total Return (%)

                                                             Since
                     One Year Five Years   Ten Years       Inception*
- ------------------- --------- ---------------- ----------- ---------------
Class A Shares      2.37      11.52            11.09       12.61
- ------------------- --------- ---------------- ----------- ---------------
- ------------------- --------- ---------------- ----------- ---------------
Class B Shares      N/A       N/A              N/A           5.88
- ------------------- --------- ---------------- ----------- ---------------
- ------------------- --------- ---------------- ----------- ---------------
Class C Shares      N/A       N/A              N/A           9.18
- ------------------- --------- ---------------- ----------- ---------------

*Inception was November 19, 1982 for Class A shares.  Class B shares and Class 
C shares were first offered February 1,
1996.
    
Automated Information Line

                                      -32-
<PAGE>

FactFoneSM, Pioneer's 24-hour automated information line, allows shareholders to
dial toll-free 1-800-225-4321 and hear recorded fund information, including:


o       net asset value prices for all Pioneer mutual funds;

o       annualized 30-day yields on Pioneer's fixed income funds;

o       annualized 7-day yields and 7-day effective
                  (compound) yields for Pioneer's money market fund; and

o       dividends and capital gains distributions on all
                  Pioneer mutual funds.

Yields are calculated in accordance with Commission mandated standard formulas.

In addition, by using a personal identification number ("PIN"), shareholders may
enter purchases, exchanges and redemptions, access their account balance and 
last three transactions and may order a duplicate statement. See "FactFoneSM" in
the Prospectus for more information.

All  performance  numbers   communicated   through  FactFoneSM   represent  past
performance,  and  figures  for  all  quoted  bond  funds  include  the  maximum
applicable sales charge. A shareholder's actual yield and total return will vary
with  changing  market  conditions.  The  value of Class A,  Class B and Class C
shares  (except for the Pioneer  money market  fund,  which seeks a stable $1.00
share  price)  will also  vary,  and such  shares  may be worth  more or less at
redemption than their original cost.

17.  FINANCIAL STATEMENTS

   
The Fund's financial statements for the fiscal year ended September 30, 1996 and
the Report of  Independent  Public  Accountants  included in this  Statement  of
Additional  Information have been included in reliance upon the report of Arthur
Andersen LLP,  independent  public  accountants,  as experts in  accounting  and
auditing.  The  report  of  Independent  Accountants  and  financial  statements
included in the Fund's  Annual  Report for the fiscal year ended  September  30,
1996,  are   incorporated   by  reference  into  this  Statement  of  Additional
Information.  The financial highlights table in the Prospectus and the financial
statements  incorporated  by  reference  into the  Prospectus  and  Statement of
Additional  Information  have been so included and incorporated in reliance upon
the report of Arthur  Andersen LLP,  independent  public  accountants,  given on
their authority as experts in accounting and auditing.
    


                                      -33-
<PAGE>






                                   APPENDIX A


                          Description of Bond Ratings1

                        Moody's Investor's Service, Inc.2

Aaa: Bonds which are rated Aaa are judged to be of the best quality.  They carry
the smallest  degree of investment  risk and are generally  referred to as "gilt
edge." Interest payments are protected by a large or by an exceptionally  stable
margin and principal is secure. While the various protective elements are likely
to change,  such changes as can be  visualized  are most  unlikely to impair the
fundamentally strong position of such issues.

Aa: Bonds which are rated Aa are judged to be of high quality by all  standards.
Together with the Aaa group they comprise what are generally known as high grade
bonds.  They are rated lower than the best bonds  because  margins of protection
may not be as large as in Aaa securities or  fluctuation of protective  elements
may be of greater  amplitude or there may be other  elements  present which make
the long-term risks appear somewhat bigger than in Aaa securities.

A: Bonds which are rated A possess many favorable investment  attributes and are
to be considered as upper medium grade  obligations.  Factors giving security to
principal and interest are considered adequate but elements may be present which
suggest susceptibility to impairment sometime in the future.

Baa: Bonds which are rated Baa are considered as medium grade obligations, i.e.,
they are neither  highly  protected nor poorly  secured.  Interest  payments and
principal  security  appear  adequate  for the present  but  certain  protective
elements may be lacking or may be  characteristically  unreliable over any great
length of time. Such bonds lack outstanding  investment  characteristics  and in
fact have speculative characteristics as well.

- ---------------------------------------------
1 The  ratings  indicated  herein are  believed  to be the most  recent  ratings
available at the date of this Prospectus for the securities listed.  Ratings are
generally given to securities at the time of issuance. While the rating agencies
may from time to time revise such  ratings,  they  undertake no obligation to do
so, and the ratings indicated do not necessarily represent ratings which will be
given to these securities on the date of the Fund's fiscal year-end.

2 Rates bonds of issuers  which have  $600,000 or more of debt,  except bonds of
educational  institutions,  projects  under  construction,  enterprises  without
established  earnings  records and  situations  where current  financial data is
unavailable.



                                      -34-
<PAGE>





                        Standard & Poor's Ratings Group 3

AAA: Bonds rated AAA are highest grade obligations. This rating indicates an 
extremely strong capacity to pay principal and interest.

AA: Bonds rated AA also  qualify as  high-quality  obligations.  Capacity to pay
principal  and  interest is very strong,  and in the majority of instances  they
differ from AAA issues only in small degree.

A: Bonds rated A have a strong capacity to pay principal and interest,  although
they are more susceptible to the adverse effects of changes in circumstances and
economic conditions.

BBB:  Bonds  rated  BBB are  regarded  as  having an  adequate  capacity  to pay
principal  and  interest.  Whereas they  normally  exhibit  adequate  protection
parameters,  adverse  economic  conditions  or changing  circumstances  are more
likely to lead to a weakened capacity to pay principal and interest for bonds in
this category than for bonds in the A category.

- -------------------------------------------------
3 Rates all governmental  bodies having  $1,000,000 or more of debt outstanding,
unless adequate information is not available.




                                      -35-
<PAGE>
<TABLE>
<CAPTION>





                              Pioneer Mid-Cap Fund
                                     Class A


<S>     <C>              <C>                 <C>                 <C>                      <C>                 <C>
 Date    Initial        Offering Price   Sales Charge        Shares Purchased      Net Asset Value   Initial Net Asset
        Investment
                                           Included                                  Per Share            Value
11/19/82  $10,000           $10.61            5.75%               942.507              $10.00             $9,425

                     Dividends and Capital Gains Reinvested

                                 Value of Shares

         Date        From Investment   From Cap. Gains           From Dividends       Total Value
                                              Reinvested         Reinvested

       12/31/82      $9,425            $0                        $0                   $9,425
       12/31/83      $11,941           $161                      $140                 $12,242
       12/31/84      $12,055           $335                      $438                 $12,828
       12/31/85      $14,194           $803                      $917                 $15,914
       12/31/86      $14,307           $2,094                    $1,295               $17,696
       12/31/87      $11,414           $3,381                    $1,502               $16,297
       12/31/88      $13,874           $5,060                    $2,251               $21,185
       12/31/89      $15,108           $7,311                    $3,100               $25,519
       12/31/90      $12,055           $7,039                    $3,119               $22,213
       12/31/91      $15,919           $9,579                    $4,813               $30,311
       12/31/92      $18,190           $12,106                   $6,099               $36,395
       12/31/93      $19,416           $15,856                   $7,012               $42,284
       12/31/94      $16,984           $16,297                   $6,612               $39,893
       12/31/95      $18,407           $21,522                   $7,673               $47,602
      
   
       12/31/96      $18,897           $26,818                   $8,307               $54,022
    


</TABLE>
<TABLE>
<CAPTION>

   
                              Pioneer Mid-Cap Fund
                                     Class B


  Date        Initial        Offering Price      Shares Purchased   Net Asset Value per  Intitial Net Asset   CDSC
            Investment                                                     Share                Value
<S>            <C>                 <C>                 <C>                  <C>                  <C>          <C>             
 2/1/96     $10,000.00          $19.2800             518.672              $19.2800             $10,000       4.00%



                                  Dividends and
                                  Capital Gains
                                   Reinvested

                                                 Value of Shares
  Date    From Investment    From Cap Gains       From Dividends    Contingent Deferred      Total Value
                               Reinvested           Reinvested          Sales Charge

12/31/96      $10,321            $1,004                $81                  $400               $11,006





                              Pioneer Mid-Cap Fund
                                     Class C

  Date        Initial        Offering Price      Shares Purchased   Net Asset Value per  Intitial Net Asset   CDSC
            Investment                                                     Share                Value
 <S>            <C>                 <C>                 <C>                  <C>                  <C>          <C>             
2/1/96     $10,000.00          $19.2800             518.672              $19.2800             $10,000       1.00%



                                  Dividends and
                                  Capital Gains
                                   Reinvested

                                                 Value of Shares
  Date    From Investment    From Cap Gains       From Dividends    Contingent Deferred      Total Value
                               Reinvested           Reinvested          Sales Charge
 12/31/96                        $1,001                $61                  $100               $11,330
              $10,368
    
</TABLE>










                                      -36-
<PAGE>

                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

The following  securities  indices are well-known,  unmanaged measures of market
performance. Advertisements and sales literature for the Fund may refer to these
indices or may present  comparisons  between the performance of the Fund and one
or more of the indices.  Other indices may be used, if appropriate.  The indices
are not available for direct  investment.  The data presented is not meant to be
indicative of the  performance of the Fund,  reflects past  performance and does
not guarantee future results.

S&P 500
This index is a readily available, carefully constructed,  market value weighted
benchmark  of common  stock  performance.  Currently,  the S&P  Composite  Index
includes  500 of the  largest  stocks  (in terms of stock  market  value) in the
United States; prior to March 1957 it consisted of 90 of the largest stocks.

DOW JONES INDUSTRIAL AVERAGE
This is a total return index based on the performance of 30 blue chip stocks.

U.S. SMALL STOCK INDEX
This index is a market value  weighted  index of the ninth and tenth  deciles of
the New York Stock  Exchange  (NYSE),  plus stocks listed on the American  Stock
Exchange (AMEX) and over-the-counter  (OTC) with the same or less capitalization
as the upper bound of the NYSE ninth decile.

U.S. INFLATION
The  Consumer  Price  Index  for All Urban  Consumers  (CPI-U),  not  seasonally
adjusted, is used to measure inflation,  which is the rate of change of consumer
goods prices.  Unfortunately,  the  inflation  rate as derived by the CPI is not
measured  over the same period as the other asset  returns.  All of the security
returns are measured  from one  month-end to the next  month-end.  CPI commodity
prices are collected during the month.  Thus,  measured  inflation rates lag the
other  series  by about  one-half  month.  Prior to  January  1978,  the CPI (as
compared with CPI-U) was used.  Both inflation  measures are  constructed by the
U.S. Department of Labor, Bureau of Labor Statistics, Washington, DC.

S&P/BARRA INDEXES
The S&P/BARRA Growth and Value Indexes are constructed by dividing the stocks in
the S&P 500 Index according to price-to-book  ratios.  The Growth Index contains
stocks with higher  price-to-book  ratios,  and the Value Index contains  stocks
with  lower  price-to-book   ratios.  Both  indexes  are  market  capitalization
weighted.


                                      -37-
<PAGE>
                                

                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS


LONG-TERM U.S. GOVERNMENT BONDS
The  total  returns  on  long-term  government  bonds  from  1977  to  1991  are
constructed  with data from The Wall Street Journal.  Over  1926-1976,  data are
obtained  from the  Government  bond file at the Center for Research in Security
Prices (CRSP), Graduate School of Business,  University of Chicago. Each year, a
one-bond  portfolio  with a term of  approximately  20  years  and a  reasonably
current  coupon  was used,  and whose  returns  did not  reflect  potential  tax
benefits,  impaired  negotiability,  or special  redemption or call  privileges.
Where  callable  bonds had to be used,  the term of the bond was assumed to be a
simple  average of the maturity and first call dates minus the current date. The
bond was "held" for the calendar year and returns were  computed.  Total returns
for  1977-1991 are  calculated  as the change in the flat price or  and-interest
price.

INTERMEDIATE-TERM U.S. GOVERNMENT BONDS
Total  returns  of the  intermediate-term  government  bonds for  1977-1991  are
calculated from The Wall Street Journal prices,  using the change in flat price.
Returns from 1934-1986 are obtained from the CRSP Government Bond File.

Each year,  one-bond  portfolios  are formed,  the bond  chosen is the  shortest
noncallable  bond with a maturity not less than 5 years, and this bond is "held"
for the  calendar  year.  Monthly  returns are  computed.  (Bonds with  impaired
negotiability or special redemption  privileges are omitted, as are partially or
fully  tax-exempt  bonds starting with 1943.) From  1934-1942,  almost all bonds
with maturities near 5 years were partially or full tax-exempt and were selected
using the rules described  above.  Personal tax rates were generally low in that
period,  so that yields on  tax-exempt  bonds were  similar to yields on taxable
bonds. From 1926-1933, there are few bonds suitable for construction of a series
with a 5-year  maturity.  For this period,  five year bond yield  estimates  are
used.

MSCI
Morgan  Stanley  Capital  International   Indices,   developed  by  the  Capital
International  S.A., are based on share prices of some 1470 companies  listed on
the stock exchanges around the world.

Countries in the MSCI EAFE Portfolio are:
Australia;  Austria;  Belgium;  Denmark;  Finland;  France;  Germany; Hong Kong;
Italy;  Japan;  Netherlands;  N.  Zealand;  Norway;  Singapore/Malaysia;  Spain;
Sweden; Switzerland; United Kingdom.

   
Countries in the MSCI EMERGING MARKET FREE INDEX are: Argentina,  Brazil, Chile,
China, Czech Republic,  Colombia,  Greece, Hungary,  India,  Indonesia,  Israel,
Jordan, Korea Free (at 50%), Malaysia,  Mexico Free, Pakistan, Peru, Philippines
Free, Poland,  Portugal,  South Africa,  Sri Lanka,  Taiwan,  Thailand,  Turkey,
Venezuela Free
    

                             

                                      -38-
<PAGE>

                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

6 MONTH CDs
Data sources include the Federal Reserve Bulletin and The Wall Street Journal.

LONG-TERM U.S. CORPORATE BONDS
For  1969-1991,  corporate  bond total  returns are  represented  by the Salomon
Brothers Long-Term  High-Grade  Corporate Bond Index. Since most large corporate
bond  transactions  take place over the  counter,  a major dealer is the natural
source of these data. The index includes  nearly all Aaa- and Aa-rated bonds. If
a bond is  downgraded  during a  particular  month,  its return for the month is
included in the index before removing the bond from future portfolios.

Over  1926-1968  the total  returns  were  calculated  by  summing  the  capital
appreciation returns and the income returns. For the period 1946-1968,  Ibbotson
and Sinquefield  backdated the Salomon Brothers' index,  using Salomon Brothers'
monthly  yield  data with a  methodology  similar  to that used by  Salomon  for
1969-1991. Capital appreciation returns were calculated from yields assuming (at
the beginning of each monthly holding period) a 20-year  maturity,  a bond price
equal to par,  and a  coupon  equal to the  beginning-of-period  yield.  For the
period 1926-1945, the Standard and Poor's monthly High-Grade Corporate Composite
yield data were used,  assuming a 4 percent coupon and a 20-year  maturity.  The
conventional  present-value  formula  for  bond  price  for  the  beginning  and
end-of-month  prices was used.  (This formula is presented in Ross,  Stephen A.,
and Randolph W. Westerfield,  Corporate Finance, Times Mirror/Mosby,  St. Louis,
1990, p. 97 ["Level-Coupon Bonds"].) The monthly income return was assumed to be
one-twelfth the coupon.

U.S. (30 DAY) TREASURY BILLS
For the U.S. Treasury bill index, data from The Wall Street Journal are used for
1977-1991;  the CRSP U.S.  Government  Bond File is the source until 1976.  Each
month a one-bill  portfolio  containing the  shortest-term  bill having not less
than one month to maturity is constructed. (The bill's original term to maturity
is not relevant.) To measure holding period returns for the one-bill  portfolio,
the bill is priced as of the last trading day of the previous  month-end  and as
of the last trading day of the current month.

NAREIT-EQUITY INDEX
All of the  data is  based  upon the last  closing  price of the  month  for all
tax-qualified  REITs  listed  on the  NYSE,  AMSE  and the  NASDAQ.  The data is
market-value-weighted.  Prior to 1987 REITs were added to the index the  January
following  their  listing.  Since 1987 Newly formed or listed REITs are added to
the total  shares  outstanding  figure in the month that the shares are  issued.
Only  common  shares  issued by the REIT are  included  in the index.  The total
return  calculation  is based upon the weighing at the  beginning of the period.
Only  those  REITs  listed for the  entire  period are


                                

                                      -39-
<PAGE>

                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

used in the total return calculation.  Dividends are included in the month based
upon their payment date. There is no smoothing of income. Liquidating dividends,
whether full or partial, are treated as income.

RUSSELL 2000 SMALL STOCK INDEX
Index of the 2,000 smallest  stocks in the Russell 3000 Index (TM); the smallest
company has a market  capitalization of approximately  $13 million.  The Russell
3000 is comprised of the 3,000  largest US  companies  as  determined  by market
capitalization  representing  approximately  98% of the US  equity  market.  The
largest  company in the index has a market  capitalization  of $67 billion.  The
Russell Indexes (TM) are reconstituted  annually as of June 1st, based on May 31
market capitalization rankings.

WILSHIRE REAL ESTATE SECURITIES INDEX
The Wilshire Real Estate  Securities  Index is a market  capitalization-weighted
index which measures the performance of more than 85 securities.

The index  contains  performance  data on five  major  categories  of  property;
office, retail, industrial, apartment and miscellaneous. Additionally, the Index
has real estate portfolio encumbered by 16% third party mortgages. The companies
in the WRESEC are 79% equity  and hybrid  REIT's and 21% real  estate  operating
companies. The capitalization is 47% NYSE, 33% AMEX and 20% OTC."

STANDARD & POOR'S MIDCAP 400 INDEX
The Standard and Poor's MidCap 400 Index is a  market-value-weighted  index. The
performance  data for the MidCap 400 Index were  calculated by taking the stocks
presently in the MidCap 400 Index and tracking them backwards in time as long as
there were prices reported.  No attempt was made to determine what stocks "might
have  been" in the  MidCap  400  Index  five or ten  years  ago had it  existed.
Dividends  are  reinvested  on a monthly  basis prior to June 30, 1991,  and are
reinvested daily thereafter.

The S&P MidCap 400 Index and the S&P 500 together represent approximately 85% of
the total market capitalization of stocks traded in the United States.

   
LIPPER BALANCED FUNDS INDEX

Equally-weighted  performance indices,  adjusted for capital gains distributions
and income  dividends of  approximately  30 of the largest  funds with a primary
objective  of  conserving  principal  by  maintaining  at all  times a  balanced
portfolio of stocks and bonds.  Typically,  the  stock/bond  ratio ranges around
60%/40%.
    

                                    

                                      -40-
<PAGE>

                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

BANK SAVINGS ACCOUNT
Data sources include the U.S. League of Savings Institutions Sourcebook; average
annual yield on savings  deposits in FSLIC [FDIC] insured  savings  institutions
for the years 1963-1987 and The Wall Street Journal for the years 1988-1994.






Source:           Ibbotson Associates









                                

                                      -41-
<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

                        Dow                                  S&P/     S&P/
            S&P        Jones     U.S. Small                 BARRA    BARRA      
            500      Industrial    Stock         U.S.        500      500    
           Index      Average      Index      Inflation    Growth    Value
           -----      -------      -----      ---------    ------    -----
Dec 1928   43.61       55.38       39.69       -0.97         N/A      N/A
Dec 1929   -8.42      -13.64      -51.36        0.20         N/A      N/A
Dec 1930  -24.90      -30.22      -38.15       -6.03         N/A      N/A
Dec 1931  -43.34      -49.03      -49.75       -9.52         N/A      N/A
Dec 1932   -8.19      -16.88       -5.39      -10.30         N/A      N/A
Dec 1933   53.99       73.71      142.87        0.51         N/A      N/A
Dec 1934   -1.44        8.07       24.22        2.03         N/A      N/A
Dec 1935   47.67       43.77       40.19        2.99         N/A      N/A
Dec 1936   33.92       30.23       64.80        1.21         N/A      N/A
Dec 1937  -35.03      -28.88      -58.01        3.10         N/A      N/A
Dec 1938   31.12       33.16       32.80       -2.78         N/A      N/A
Dec 1939   -0.41        1.31        0.35       -0.48         N/A      N/A
Dec 1940   -9.78       -7.96       -5.16        0.96         N/A      N/A
Dec 1941  -11.59       -9.88       -9.00        9.72         N/A      N/A
Dec 1942   20.34       14.12       44.51        9.29         N/A      N/A
Dec 1943   25.90       19.06       88.37        3.16         N/A      N/A
Dec 1944   19.75       17.19       53.72        2.11         N/A      N/A
Dec 1945   36.44       31.60       73.61        2.25         N/A      N/A
Dec 1946   -8.07       -4.40      -11.63       18.16         N/A      N/A
Dec 1947    5.71        7.61        0.92        9.01         N/A      N/A
Dec 1948    5.50        4.27       -2.11        2.71         N/A      N/A
Dec 1949   18.79       20.92       19.75       -1.80         N/A      N/A
Dec 1950   31.71       26.40       38.75        5.79         N/A      N/A
Dec 1951   24.02       21.77        7.80        5.87         N/A      N/A
Dec 1952   18.37       14.58        3.03        0.88         N/A      N/A
Dec 1953   -0.99        2.02       -6.49        0.62         N/A      N/A
Dec 1954   52.62       51.25       60.58       -0.50         N/A      N/A
Dec 1955   31.56       26.58       20.44        0.37         N/A      N/A
Dec 1956    6.56        7.10        4.28        2.86         N/A      N/A
Dec 1957  -10.78       -8.63      -14.57        3.02         N/A      N/A
Dec 1958   43.36       39.31       64.89        1.76         N/A      N/A
Dec 1959   11.96       20.21       16.40        1.50         N/A      N/A
Dec 1960    0.47       -6.14       -3.29        1.48         N/A      N/A
Dec 1961   26.89       22.60       32.09        0.67         N/A      N/A
Dec 1962   -8.73       -7.43      -11.90        1.22         N/A      N/A
Dec 1963   22.80       20.83       23.57        1.65         N/A      N/A
Dec 1964   16.48       18.85       23.52        1.19         N/A      N/A
Dec 1965   12.45       14.39       41.75        1.92         N/A      N/A
Dec 1966  -10.06      -15.78       -7.01        3.35         N/A      N/A
Dec 1967   23.98       19.16       83.57        3.04         N/A      N/A
Dec 1968   11.06        7.93       35.97        4.72         N/A      N/A

                                  

                                      -42-
<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT


                        Dow                                  S&P/     S&P/
            S&P        Jones     U.S. Small                 BARRA    BARRA      
            500      Industrial    Stock         U.S.        500      500    
           Index      Average      Index      Inflation    Growth    Value
           -----      -------      -----      ---------    ------    -----
Dec 1969   -8.50      -11.78      -25.05        6.11        N/A      N/A
Dec 1970    4.01        9.21      -17.43        5.49        N/A      N/A
Dec 1971   14.31        9.83       16.50        3.36        N/A      N/A
Dec 1972   18.98       18.48        4.43        3.41        N/A      N/A
Dec 1973  -14.66      -13.28      -30.90        8.80        N/A      N/A
Dec 1974  -26.47      -23.58      -19.95       12.20        N/A      N/A
Dec 1975   37.20       44.75       52.82        7.01       31.72    43.38
Dec 1976   23.84       22.82       57.38        4.81       13.84    34.93
Dec 1977   -7.18      -12.84       25.38        6.77      -11.82    -2.57
Dec 1978    6.56        2.79       23.46        9.03        6.78     6.16
Dec 1979   18.44       10.55       43.46       13.31       15.72    21.16
Dec 1980   32.42       22.17       39.88       12.40       39.40    23.59
Dec 1981   -4.91       -3.57       13.88        8.94       -9.81     0.02
Dec 1982   21.41       27.11       28.01        3.87       22.03    21.04
Dec 1983   22.51       25.97       39.67        3.80       16.24    28.89
Dec 1984    6.27        1.31       -6.67        3.95        2.33    10.52
Dec 1985   32.16       33.55       24.66        3.77       33.31    29.68
Dec 1986   18.47       27.10        6.85        1.13       14.50    21.67
Dec 1987    5.23        5.48       -9.30        4.41        6.50     3.68
Dec 1988   16.81       16.14       22.87        4.42       11.95    21.67
Dec 1989   31.49       32.19       10.18        4.65       36.40    26.13
Dec 1990   -3.17       -0.56      -21.56        6.11        0.20    -6.85
Dec 1991   30.55       24.19       44.63        3.06       38.37    22.56
Dec 1992    7.67        7.41       23.35        2.90        5.07    10.53
Dec 1993    9.99       16.94       20.98        2.75        1.68    18.60
Dec 1994    1.31        5.06        3.11        2.78        3.13    -0.64
Dec 1995   37.43       36.84       34.46        2.74       38.13    36.99
   
Dec 1996   23.07       28.84       17.62        3.58       23.96    21.99
    




                             

                                      -43-
<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

                         Intermediate      MSCI                Long-
          Long-Term       -Term U.S.       EAFE        6     Term U.S.    U.S.
          U.S. Gov't      Government     - Net of    MONTH   Corporate  (30 Day)
            Bonds           Bonds          Taxes      CDs      Bonds    T- Bill
            -----           -----          -----      ---      -----    -------
Dec 1925     N/A              N/A           N/A       N/A      N/A      N/A
Dec 1926     7.77             5.38          N/A       N/A      7.37     3.27
Dec 1927     8.93             4.52          N/A       N/A      7.44     3.12
Dec 1928     0.1              0.92          N/A       N/A      2.84     3.56
Dec 1929     3.42             6.01          N/A       N/A      3.27     4.75
Dec 1930     4.66             6.72          N/A       N/A      7.98     2.41
Dec 1931    -5.31            -2.32          N/A       N/A      -1.85    1.07
Dec 1932    16.84             8.81          N/A       N/A      10.82    0.96
Dec 1933    -0.07             1.83          N/A       N/A      10.38    0.30
Dec 1934    10.03             9.00          N/A       N/A      13.84    0.16
Dec 1935     4.98             7.01          N/A       N/A      9.61     0.17
Dec 1936     7.52             3.06          N/A       N/A      6.74     0.18
Dec 1937     0.23             1.56          N/A       N/A      2.75     0.31
Dec 1938     5.53             6.23          N/A       N/A      6.13    -0.02
Dec 1939     5.94             4.52          N/A       N/A      3.97     0.02
Dec 1940     6.09             2.96          N/A       N/A      3.39     0.00
Dec 1941     0.93             0.50          N/A       N/A      2.73     0.06
Dec 1942     3.22             1.94          N/A       N/A      2.60     0.27
Dec 1943     2.08             2.81          N/A       N/A      2.83     0.35
Dec 1944     2.81             1.80          N/A       N/A      4.73     0.33
Dec 1945    10.73             2.22          N/A       N/A      4.08     0.33
Dec 1946    -0.10             1.00          N/A       N/A      1.72     0.35
Dec 1947    -2.62             0.91          N/A       N/A     -2.34     0.50
Dec 1948     3.40             1.85          N/A       N/A      4.14     0.81
Dec 1949     6.45             2.32          N/A       N/A      3.31     1.10
Dec 1950     0.06             0.70          N/A       N/A      2.12     1.20
Dec 1951    -3.93             0.36          N/A       N/A     -2.69     1.49
Dec 1952     1.16             1.63          N/A       N/A      3.52     1.66
Dec 1953     3.64             3.23          N/A       N/A      3.41     1.82
Dec 1954     7.19             2.68          N/A       N/A      5.39     0.86
Dec 1955    -1.29            -0.65          N/A       N/A      0.48     1.57
Dec 1956    -5.59            -0.42          N/A       N/A     -6.81     2.46
Dec 1957     7.46             7.84          N/A       N/A      8.71     3.14
Dec 1958    -6.09            -1.29          N/A       N/A     -2.22     1.54
Dec 1959    -2.26            -0.39          N/A       N/A     -0.97     2.95
Dec 1960    13.78            11.76          N/A       N/A      9.07     2.66
Dec 1961     0.97             1.85          N/A       N/A      4.82     2.13
Dec 1962     6.89             5.56          N/A       N/A      7.95     2.73
Dec 1963     1.21             1.64          N/A       N/A      2.19     3.12
Dec 1964     3.51             4.04          N/A      4.18      4.77     3.54
Dec 1965     0.71             1.02          N/A      4.68     -0.46     3.93



                                 

                                      -44-
<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

                         Intermediate      MSCI                Long-
          Long-Term       -Term U.S.       EAFE        6     Term U.S.    U.S.
          U.S. Gov't      Government     - Net of    MONTH   Corporate  (30 Day)
            Bonds           Bonds          Taxes      CDs      Bonds    T- Bill
            -----           -----          -----      ---      -----    -------
Dec 1966     3.65           4.69            N/A       5.75     0.20       4.76
Dec 1967    -9.18           1.01            N/A       5.48    -4.95       4.21
Dec 1968    -0.26           4.54            N/A       6.44     2.57       5.21
Dec 1969    -5.07          -0.74            N/A       8.71    -8.09       6.58
Dec 1970    12.11          16.86          -11.66      7.06    18.37       6.52
Dec 1971    13.23           8.72           29.59      5.36    11.01       4.39
Dec 1972     5.69           5.16           36.35      5.38     7.26       3.84
Dec 1973    -1.11           4.61          -14.92      8.60     1.14       6.93
Dec 1974     4.35           5.69          -23.16     10.20    -3.06       8.00
Dec 1975     9.20           7.83           35.39      6.51    14.64       5.80
Dec 1976    16.75          12.87            2.54      5.22    18.65       5.08
Dec 1977    -0.69           1.41           18.06      6.12     1.71       5.12
Dec 1978    -1.18           3.49           32.62     10.21    -0.07       7.18
Dec 1979    -1.23           4.09            4.75     11.90    -4.18      10.38
Dec 1980    -3.95           3.91           22.58     12.33    -2.76      11.24
Dec 1981     1.86           9.45           -2.28     15.50    -1.24      14.71
Dec 1982    40.36          29.1            -1.86     12.18    42.56      10.54
Dec 1983     0.65           7.41           23.69      9.65     6.26       8.80
Dec 1984    15.48          14.02            7.38     10.65    16.86       9.85
Dec 1985    30.97          20.33           56.16      7.82    30.09       7.72
Dec 1986    24.53          15.14           69.44      6.30    19.85       6.16
Dec 1987    -2.71           2.90           24.63      6.58    -0.27       5.47
Dec 1988     9.67           6.10           28.27      8.15    10.70       6.35
Dec 1989    18.11          13.29           10.54      8.27    16.23       8.37
Dec 1990     6.18           9.73          -23.45      7.85     6.78       7.81
Dec 1991    19.3           15.46           12.13      4.95    19.89       5.60
Dec 1992     8.05           7.19          -12.17      3.27     9.39       3.51
Dec 1993    18.24          11.24           32.56      2.88    13.19       2.90
Dec 1994    -7.77          -5.14            7.78      5.40    -5.76       3.90
Dec 1995    31.67          16.8            11.21      5.21    26.39       5.60
   
Dec 1996    -0.93           2.10            6.05      5.21     1.40       5.21
    




                                 

                                      -45-
<PAGE>



                                   PERFORMANCE STATISTICS - TOTAL RETURN PERCENT
<TABLE>
<CAPTION>

   
                                                                          LIPPER      MSCI EMERGING
                          RUSSELL 2000  WILSHIRE REAL    S&P MIDCAP      BALANCED     MARKETS FREE         BANK
              NAREIT-EQUITY   INDEX         ESTATE           400           FUND           INDEX       SAVINGS ACCOUNT
                                          SECURITIES        INDEX          INDEX
- -----------------------------------------------------------------------------------------------------------------------
<S>               <C>          <C>           <C>             <C>            <C>            <C>              <C>                     
Dec 1925          N/A          N/A           N/A             N/A            N/A            N/A              N/A
Dec 1926          N/A          N/A           N/A             N/A            N/A            N/A              N/A
Dec 1927          N/A          N/A           N/A             N/A            N/A            N/A              N/A
Dec 1928          N/A          N/A           N/A             N/A            N/A            N/A              N/A
Dec 1929          N/A          N/A           N/A             N/A            N/A            N/A              N/A
Dec 1930          N/A          N/A           N/A             N/A            N/A            N/A             5.30
Dec 1931          N/A          N/A           N/A             N/A            N/A            N/A             5.10
Dec 1932          N/A          N/A           N/A             N/A            N/A            N/A             4.10
Dec 1933          N/A          N/A           N/A             N/A            N/A            N/A             3.40
Dec 1934          N/A          N/A           N/A             N/A            N/A            N/A             3.50
Dec 1935          N/A          N/A           N/A             N/A            N/A            N/A             3.10
Dec 1936          N/A          N/A           N/A             N/A            N/A            N/A             3.20
Dec 1937          N/A          N/A           N/A             N/A            N/A            N/A             3.50
Dec 1938          N/A          N/A           N/A             N/A            N/A            N/A             3.50
Dec 1939          N/A          N/A           N/A             N/A            N/A            N/A             3.40
Dec 1940          N/A          N/A           N/A             N/A            N/A            N/A             3.30
Dec 1941          N/A          N/A           N/A             N/A            N/A            N/A             3.10
Dec 1942          N/A          N/A           N/A             N/A            N/A            N/A             3.00
Dec 1943          N/A          N/A           N/A             N/A            N/A            N/A             2.90
Dec 1944          N/A          N/A           N/A             N/A            N/A            N/A             2.80
Dec 1945          N/A          N/A           N/A             N/A            N/A            N/A             2.50
Dec 1946          N/A          N/A           N/A             N/A            N/A            N/A             2.20
Dec 1947          N/A          N/A           N/A             N/A            N/A            N/A             2.30
Dec 1948          N/A          N/A           N/A             N/A            N/A            N/A             2.30
Dec 1949          N/A          N/A           N/A             N/A            N/A            N/A             2.40
Dec 1950          N/A          N/A           N/A             N/A            N/A            N/A             2.50
Dec 1951          N/A          N/A           N/A             N/A            N/A            N/A             2.60
Dec 1952          N/A          N/A           N/A             N/A            N/A            N/A             2.70
Dec 1953          N/A          N/A           N/A             N/A            N/A            N/A             2.80
Dec 1954          N/A          N/A           N/A             N/A            N/A            N/A             2.90
Dec 1955          N/A          N/A           N/A             N/A            N/A            N/A             2.90
Dec 1956          N/A          N/A           N/A             N/A            N/A            N/A             3.00
Dec 1957          N/A          N/A           N/A             N/A            N/A            N/A             3.30
Dec 1958          N/A          N/A           N/A             N/A            N/A            N/A             3.38
Dec 1959          N/A          N/A           N/A             N/A            N/A            N/A             3.53
Dec 1960          N/A          N/A           N/A             N/A           5.77            N/A             3.86
Dec 1961          N/A          N/A           N/A             N/A           20.59           N/A             3.90
Dec 1962          N/A          N/A           N/A             N/A           -6.80           N/A             4.08
Dec 1963          N/A          N/A           N/A             N/A           13.10           N/A             4.17
Dec 1964          N/A          N/A           N/A             N/A           12.36           N/A             4.19
Dec 1965          N/A          N/A           N/A             N/A           9.80            N/A             4.23
Dec 1966          N/A          N/A           N/A             N/A           -5.86           N/A             4.45
Dec 1967          N/A          N/A           N/A             N/A           15.09           N/A             4.67
Dec 1968          N/A          N/A           N/A             N/A           13.97           N/A             4.68
Dec 1969          N/A          N/A           N/A             N/A           -9.01           N/A             4.80
Dec 1970          N/A          N/A           N/A             N/A           5.62            N/A             5.14
Dec 1971          N/A          N/A           N/A             N/A           13.90           N/A             5.30
    
</TABLE>

                           

                                      -46-
<PAGE>



                                   PERFORMANCE STATISTICS - TOTAL RETURN PERCENT
<TABLE>
<CAPTION>

   
                                                                          LIPPER      MSCI EMERGING
                          RUSSELL 2000  WILSHIRE REAL    S&P MIDCAP      BALANCED     MARKETS FREE         BANK
              NAREIT-EQUITY   INDEX         ESTATE           400           FUND           INDEX       SAVINGS ACCOUNT
                                          SECURITIES        INDEX          INDEX
- -----------------------------------------------------------------------------------------------------------------------
<S>               <C>          <C>           <C>             <C>            <C>            <C>              <C>                     
Dec 1972         8.01          N/A           N/A             N/A           11.13           N/A             5.37
Dec 1973        -15.52         N/A           N/A             N/A          -12.24           N/A             5.51
Dec 1974        -21.40         N/A           N/A             N/A          -18.71           N/A             5.96
Dec 1975         19.30         N/A           N/A             N/A           27.10           N/A             6.21
Dec 1976         47.59         N/A           N/A             N/A           26.03           N/A             6.23
Dec 1977         22.42         N/A           N/A             N/A           -0.72           N/A             6.39
Dec 1978         10.34         N/A          13.04            N/A           4.80            N/A             6.56
Dec 1979         35.86        43.09         70.81            N/A           14.67           N/A             7.29
Dec 1980         24.37        38.58         22.08            N/A           19.70           N/A             8.78
Dec 1981         6.00         2.03           7.18            N/A           1.86            N/A             10.71
Dec 1982         21.60        24.95         24.47           22.68          30.63           N/A             11.19
Dec 1983         30.64        29.13         27.61           26.10          17.44           N/A             9.71
Dec 1984         20.93        -7.30         20.64           1.18           7.46            N/A             9.92
Dec 1985         19.10        31.05         22.20           35.58          29.83           N/A             9.02
Dec 1986         19.16        5.68          20.30           16.21          18.43           N/A             7.84
Dec 1987         -3.64        -8.77         -7.86           -2.03          4.13            N/A             6.92
Dec 1988         13.49        24.89         24.18           20.87          11.18          40.43            7.20
Dec 1989         8.84         16.24          2.37           35.54          19.70          64.96            7.91
Dec 1990        -15.35       -19.51         -33.46          -5.12          0.66           10.55            7.80
Dec 1991         35.70        46.05         20.03           50.10          25.83          59.91            4.61
Dec 1992         14.59        18.41          7.36           11.91          7.46           11.40            2.89
Dec 1993         19.65        18.91         15.24           13.96          11.95          74.83            2.73
Dec 1994         3.17         -1.82          1.64           -3.57          -2.05          7.32             4.96
Dec 1995         15.27        28.44         13.65           30.94          24.89          5.21             5.24
Dec 1996         35.26        16.53         36.87           19.20          13.01          6.03             4.95
    

Source:  Lipper
</TABLE>


                                      -50-


<PAGE>





                                   APPENDIX B

                            OTHER PIONEER INFORMATION

The Pioneer group of mutual funds was  established  in 1928 with the creation of
Pioneer Fund.  Pioneer is one of the oldest and most experienced  money managers
in the United States.

   
As of December 31, 1996,  PMC employed a  professional  investment  staff of 53,
with a  combined  average  of 12 years'  experience  in the  financial  services
industry.

Total  assets  of  all  Pioneer   mutual  funds  at  December  31,  1996,   were
approximately $15.8 billion representing 1,086,554 shareholder accounts, 722,661
non-retirement accounts and 363,893 retirement accounts.
    



                                  
<PAGE>
                                  
<PAGE>

                                                         File Nos. 2-79140
                                                                  811-3564



                                   
                                    FORM N-1A
                            PART C. OTHER INFORMATION


Item 24.  Financial Statements and Exhibits

         (a)      Financial Statements:

   
         The financial  highlights of the  Registrant  for the fiscal year ended
         September 30, 1996 are included in Part A of the Registration Statement
         and the financial  statements of the  Registrant  are  incorporated  by
         reference  into  Part B of the  Registration  Statement  from  the 1996
         Annual  Report to  Shareholders  for the year ended  September 30, 1996
         (filed  electronically  on  November  26,  1996;  file  no.  811-07525;
         accession number 0000706155-96-000020).


         (b)      Exhibits:

                  1.       Agreement and Declaration of Trust*

                  2.       By-Laws*

                  3.       None

                  4.1      Specimen Class A Share Certificate*

                  4.2      Specimen Class B Share Certificate*

                  4.3      Specimen Class C Share Certificate*

                  5.       Management Contract*

                  6.1      Underwriting Agreement*

                  6.2      Form of Dealer Sales Agreement*

                  7.       None

                  8.       Form of Custodian Agreement
                             with Brown Brothers Harriman & Co.*

                  9.      Investment Company Service Agreement*

                  10.      Legal Opinion of Morris, Nichols, Arsht & Tunnell


                                    
<PAGE>

                  11.      Consent of Arthur Andersen LLP

                  12.      None

                  13.      Form of Stock Purchase Agreement*

                  14.      None

                  15.1 Class A Distribution Plan*

                  15.2 Class B Distribution Plan*

                  15.3 Class C Distribution Plan*

                  16.      Description of Average Annual Total Return*

                  17.  Financial Data Schedule

                  18.      Multiple Class Plan Pursuant to Rule 18f-3*

                  19.      Powers of Attorney*
- ------------------------

         * Previously  filed.  Incorporated by reference from the exhibits filed
with  the  Registration  Statement  (File  No.  2-79140),  as  amended,  of  the
Registrant.


Item 25. Persons Controlled By or Under
                  Common Control With Registrant


                                   Percent                State/Country
                                     of                    of
         Company  Owned By         Shares                 Incorporation









Pioneering Management Corp. (PMC)        PGI             100%   DE
Pioneering Services Corp. (PSC)          PGI             100%   MA
Pioneer Capital Corp. (PCC)              PGI             100%   MA
Pioneer Fonds Marketing GmbH (GmbH)      PGI             100%   MA
Pioneer SBIC Corp. (SBIC)                PGI             100%   MA
Pioneer Associates, Inc. (PAI)           PGI             100%   MA
Pioneer International Corp. (PInt)       PGI             100%   MA
Pioneer Plans Corp. (PPC)                PGI             100%   MA
Pioneer Goldfields Ltd (PGL)             PGI             100%   MA
Pioneer Investments Corp. (PIC)          PGI             100%   MA


<PAGE>

Pioneer Metals and Technology,
  Inc. (PMT)                             PGI             100%   DE
Pioneer First Polish Trust Fund
  Joint Stock Co. (First Polish)         PGI             100%   Poland
Teberebie Goldfields Ltd. (TGL)          PGI              90%   Ghana
Pioneer Funds Distributor, Inc.
  (PFD)                                  PMC             100%   MA
SBIC's outstanding capital stock         PCC             100%   MA

THE FUNDS:  All are parties to management contracts with PMC.

                                               BUSINESS
 FUND                                           TRUST



Pioneer International Growth Fund                 MA
Pioneer World Equity Fund                         DE
Pioneer Europe Fund                               MA
Pioneer Emerging Markets Fund                     DE
Pioneer India Fund                                DE
Pioneer Growth Trust                              MA
Pioneer Mid-Cap Fund                              DE
Pioneer Growth Shares                             DE
Pioneer Small Company Fund                        DE
Pioneer Fund                                      MA
Pioneer II                                        MA
Pioneer Real Estate Shares                        DE
Pioneer Short-Term Income Fund                    MA
Pioneer America Income Trust                      MA
Pioneer Bond Fund                                 MA
Pioneer Balanced Fund                             DE
Pioneer Intermediate Tax-Free Fund                MA
Pioneer Tax-Free Income Fund                      DE
Pioneer Money Market Trust                        DE
Pioneer Variable Contracts Trust                  DE
Pioneer Interest Shares, Inc.                     DE

OTHER:

..    SBIC is the sole general partner of Pioneer Ventures Limited Partnership, a
     Massachusetts limited partnership.
      
..    ITI Pioneer AMC Ltd.  (ITI  Pioneer)  (Indian  Corp.),  is a joint  venture
     between PMC and Investment Trust of India Ltd. (ITI) (Indian Corp.)
      
..    ITI and PMC own  approximately  54% and  45%,  respectively,  of the  total
     equity capital of ITI Pioneer.




<PAGE>




                               JOHN F. COGAN, JR.


            Owns approximately 14% of the outstanding shares of PGI.

                                                TRUSTEE/
         ENTITY         CHAIRMAN  PRESIDENT     DIRECTOR         OTHER


Pioneer Family of

  Mutual Funds               X       X        X

PGL                          X       X        X

PGI                          X       X        X

PPC                                  X        X

PIC                                  X        X

Pintl                                X        X

PMT                                  X        X

PCC                                           X

PSC                                           X

PMC                          X                X

PFD                          X                X

TGL                          X                X

First Polish                 X                Member of
                                              Supervisory Board

Hale and Dorr LLP                             Partner

GmbH                                          Chairman of
                                              Supervisory Board











Item 26.  Number of Holders of Securities

                  At December 31, 1996, there were approximately 55,523 holders 
ofthe Registrant's  Class A shares, 368 holders of the Registrant's Class B 
shares and 34 holders of the Registrant's Class C shares.
    
<PAGE>

Item 27. Indemnification

                  Except for the  Declaration  of Trust dated  January 12, 1996,
establishing the Registrant as a Trust under Delaware law, there is no contract,
arrangement  or  statute  under  which any  director,  officer,  underwriter  or
affiliated  person of the Registrant is insured or indemnified.  The Declaration
of Trust  provides  that no Trustee or officer will be  indemnified  against any
liability to which the Registrant would otherwise be subject by reason of or for
willful  misfeasance,  bad faith, gross negligence or reckless disregard of such
person's duties.


Item 28. Business and Other Connections of Investment Adviser

                  All of the  information  required by this item is set forth in
the Form ADV, as amended, of Pioneering  Management  Corporation.  The following
sections of such Form ADV are incorporated herein by reference:

                  (a)      Items 1 and 2 of Part 2;

                  (b)      Section IV, Business Background, of each Schedule D.


Item 29. Principal Underwriter

                  (a)     See Item 25 above.
                  (b)      Directors and Officers of PFD:








                       Positions and Offices    Positions and Offices

Name                   with Underwriter         with Registrant
- ----                   ----------------         ---------------

John F. Cogan, Jr.     Director and Chairman     Chairman of the Board,
                                                 President and Trustee

Robert L. Butler       Director and President    None


   
David D. Tripple       Director                  Executive Vice President and
                                                 Trustee
    

Steven M. Graziano     Senior                     None
                       Vice President

Stephen W. Long        Senior                     None
                       Vice President

John W. Drachman       Vice President             None

Barry G. Knight        Vice President             None

William A. Misata      Vice President             None

Anne W. Patenaude      Vice President             None

Elizabeth B. Rice      Vice President             None

Gail A. Smyth          Vice President             None

Constance D. Spiros    Vice President             None

Marcy L. Supovitz      Vice President             None

Mary Kleeman             Vice President           None

Steven R. Berke        Assistant                  None
                       Vice President

Mary Sue Hoban         Assistant                  None
                       Vice President

William H. Keough      Treasurer                  Treasurer

Roy P. Rossi           Assistant Treasurer        None

Joseph P. Barri        Clerk                      Secretary

Robert P. Nault        Assistant Clerk            Assistant Secretary





                  (c)      Not applicable.



Item 30. Location of Accounts and Records

                  The accounts and records are  maintained  at the  Registrant's
office at 60 State Street, Boston, Massachusetts; contact the Treasurer.


Item 31. Management Services

                  The  Registrant  is  not a  party  to  any  management-related
service  contract,  except as  described  in the  Prospectus  and  Statement  of
Additional Information.

<PAGE>

Item 32. Undertaking

                  (a)      Not applicable.

                  (b)      Not applicable.

                  (c) The Registrant hereby undertakes to deliver or cause to be
delivered with the Prospectus,  to each person to whom the Prospectus is sent or
given, a copy of the Registrant's  report to shareholders  furnished pursuant to
and meeting the  requirements of Rule 30d-1 under the Investment  Company Act of
1940,  as amended,  from which the  specified  information  is  incorporated  by
reference,  unless such person  currently holds securities of the Registrant and
otherwise has received a copy of such report, in which case the Registrant shall
state in the Prospectus  that it will furnish,  without  charge,  a copy of such
report on request,  and the name,  address and telephone number of the person to
whom such a request should be directed.




<PAGE>



                                   SIGNATURES


   
         Pursuant  to the  requirements  of the  Securities  Act of 1933 and the
Investment  Company Act of 1940, the  Registrant  certifies that it meets all of
the requirements for  effectiveness of this  Post-Effective  Amendment No. 22 to
its Registration  Statement  pursuant to Rule 485(b) under the Securities Act of
1933  and  has  duly  caused  this  Post-Effective  Amendment  No.  22  to  such
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly authorized, in the City of Boston and The Commonwealth of Massachusetts, on
the 27 th day of January, 1997.
    


                                                     PIONEER MID-CAP FUND



                                                     By:/s/ John F. Cogan, Jr.
                                                        John F. Cogan, Jr.
                                                        Chairman and President


   
         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Post-Effective  Amendment No. 22 to the Registrant's  Registration Statement has
been signed below by the  following  persons in the  capacities  and on the date
indicated:
    


           Signature         Title



/s/ John F. Cogan, Jr.                            Chairman of the Board     )
John F. Cogan, Jr.                                and President             )
                                                  (Principal Executive      )
                                                  Officer)                  )
                                                                            )
                                                                            )
William H. Keough*                                Chief Financial Officer   )
William H. Keough                                 and Treasurer (Principal  )
                                                  Financial and Accounting  )
                                                  Officer)                  )
Trustees:                                                                   )
                                                                            )
                                                                            )
/s/ John F. Cogan, Jr.                                                      )
John F. Cogan, Jr.                                                          )
                                                                            )
                                                                            )
                                                                            )
Richard H. Egdahl, M.D.*                                                    )
Richard H. Egdahl, M.D.                                                     )
                                                                            )
                                                                            )
                                                                            )
Margaret B. W. Graham*                                                      )
Margaret B. W. Graham                                                       )
                                                                            )
                                                                            )
                                                                            )
John W. Kendrick*                                                           )
John W. Kendrick                                                            )
                                                                            )
                                                                            )
                                                                            )
Marguerite A. Piret*                                                        )
Marguerite A. Piret                                                         )
                                                                            )
                                                                            )
                                                                            )
David D. Tripple*                                                           )
David D. Tripple                                                            )
                                                                            )
                                                                            )
                                                                            )
Stephen K. West*                                                            )
Stephen K. West                                                             )
                                                                            )
                                                                            )
                                                                            )
John Winthrop*                                                              )
John Winthrop                                                               )
                                                                            )
                                                                            )


   
*By:/s/ John F. Cogan, Jr.         Dated:  January 27, 1997
    John F. Cogan, Jr.
    Attorney-in-fact
    



<PAGE>



                                  Exhibit Index


Exhibit
Number   Document Title

       

10. Legal Opinion of Morris, Nichols, Arsht & Tunnell

       

11. Consent of Arthur Andersen LLP
       

17.  Financial Data Schedule
       






                                January 23, 1997






Pioneer Mid-Cap Fund
60 State Street
Boston, Massachusetts  02109

                  Re:      Pioneer Mid-Cap Fund

Ladies and Gentlemen:

                  We have acted as special  Delaware  counsel to Pioneer Mid-Cap
Fund,  a Delaware  business  trust (the  "Trust"),  in  connection  with certain
matters  relating to the  formation  of the Trust and the  issuance of Shares of
beneficial  interest  in the  Trust.  Capitalized  terms  used  herein  and  not
otherwise herein defined are used as defined in the Agreement and Declaration of
Trust of the Trust dated January 12, 1996 (the "Governing Instrument").

                  In rendering  this  opinion,  we have  examined  copies of the
following  documents,  each in the form provided to us: the Certificate of Trust
of the Trust as filed in the  Office of the  Secretary  of State of the State of
Delaware (the "Recording Office") on January 29, 1996 (the  "Certificate");  the
Governing  Instrument;  the  By-laws of the Trust;  certain  resolutions  of the
Trustees  of  the  Trust;  an  Adoption  Of And  Amendment  To  Notification  Of
Registration as filed with the Securities and Exchange Commission on February 1,
1996 by which the Trust adopted the Notification of Registration  Filed Pursuant
to Section  8(a) of the  Investment  Company Act of 1940 on Form N-8A of Pioneer
Three, a Massachusetts  business trust;  Post-Effective  Amendment No. 21 to the
Registration  Statement on Form N-1A (the  "Registration  Statement") of Pioneer
Three,  a  Massachusetts   business  trust,  by  which  the  Trust  adopted  the
Registration  Statement as filed with the Securities and Exchange  Commission on
February 1, 1996;  Post-Effective Amendment No. 22 to the Registration Statement
to be filed with The  Securities  and Exchange  Commission  on or about the date
hereof (the "Post-Effective Amendment"); and a certification of good standing of
the Trust  obtained  as of a recent  date  from the  Recording  Office.  In such
examinations,  we have assumed the genuineness of all signatures, the conformity
to original  documents 

<PAGE>

of all  documents  submitted  to us as  copies  or  drafts  of  documents  to be
executed, and the legal capacity of natural persons to complete the execution of
documents.  We have further assumed for the purpose of this opinion: (i) the due
authorization,  execution  and delivery by, or on behalf of, each of the parties
thereto of the above-referenced  instruments,  certificates and other documents,
and of all documents  contemplated by the Governing Instrument,  the By-laws and
applicable  resolutions of the Trustees to be executed by investors  desiring to
become  Shareholders;  (ii) the payment of  consideration  for  Shares,  and the
application of such consideration,  as provided in the Governing Instrument, and
compliance with the other terms,  conditions and  restrictions  set forth in the
Governing Instrument and all applicable resolutions of the Trustees of the Trust
in connection with the issuance of Shares (including,  without  limitation,  the
taking of all appropriate  action by the Trustees to designate  Series of Shares
and the rights and  preferences  attributable  thereto  as  contemplated  by the
Governing  Instrument);  (iii)  that  appropriate  notation  of  the  names  and
addresses  of, the  number of Shares  held by,  and the  consideration  paid by,
Shareholders will be maintained in the appropriate registers and other books and
records of the Trust in connection with the issuance,  redemption or transfer of
Shares;  (iv)  that no  event  has  occurred  subsequent  to the  filing  of the
Certificate that would cause a termination or  reorganization of the Trust under
Section 4 or Section 5 of Article IX of the Governing  Instrument;  (v) that the
activities of the Trust have been and will be conducted in  accordance  with the
terms of the Governing  Instrument and the Delaware  Business Trust Act, 12 Del.
C. ss.ss. 3801 et seq. (the "Delaware Act"); and (vi) that each of the documents
examined  by  us is in  full  force  and  effect  and  has  not  been  modified,
supplemented or otherwise amended,  except as herein  referenced.  No opinion is
expressed  herein  with  respect to the  requirements  of, or  compliance  with,
federal or state securities or blue sky laws.  Further, we express no opinion on
the  sufficiency  or accuracy  of any  registration  or  offering  documentation
relating to the Trust or the Shares.  As to any facts  material to our  opinion,
other than those assumed,  we have relied without  independent  investigation on
the  above-referenced  documents and on the accuracy,  as of the date hereof, of
the matters therein contained.


                  Based on and  subject  to the  foregoing,  and  limited in all
respects to matters of Delaware law, it is our opinion that:

                  1.       The Trust is a duly  organized  and validly  existing
business  trust in good  standingunder the laws of the State of Delaware.

                  2. The Shares registered by the Post-Effective Amendment, when
issued to Shareholders in accordance  with the terms,  conditions,  requirements
and procedures set forth in the Governing  Instrument,  will constitute  legally
issued,  fully paid and  non-assessable  Shares of  beneficial  interest  in the
Trust.


<PAGE>




Pioneer Mid-Cap Fund

January 23, 1997
Page 3


                  3.  Under  the  Delaware  Act and the  terms of the  Governing
Instrument, each Shareholder of the Trust, in such capacity, will be entitled to
the same  limitation of personal  liability as that extended to  stockholders of
private  corporations for profit organized under the general  corporation law of
the State of  Delaware;  provided,  however,  that we express  no  opinion  with
respect to the  liability of any  Shareholder  who is, was or may become a named
Trustee of the Trust.  Neither the  existence  nor exercise of the voting rights
granted to Shareholders under the Governing  Instrument will, of itself, cause a
Shareholder  to be  deemed a  trustee  of the  Trust  under  the  Delaware  Act.
Notwithstanding  the foregoing or the opinion expressed in paragraph 2 above, we
note that,  pursuant to Section 2 of Article VIII of the  Governing  Instrument,
the  Trustees  have the  power  to  cause  Shareholders,  or  Shareholders  of a
particular  Series,  to pay certain  custodian,  transfer,  servicing or similar
agent charges by setting off the same against  declared but unpaid  dividends or
by reducing Share ownership (or by both means).

                  We understand that you are about to register  9,622,220 Shares
of  beneficial  interest in the Trust by the  Post-Effective  Amendment,  and we
hereby  consent to the filing of a copy of this opinion with the  Securities and
Exchange  Commission  as part of the  Post-Effective  Amendment.  In giving this
consent,  we do not thereby  admit that we come  within the  category of persons
whose  consent is required  under  Section 7 of the  Securities  Act of 1933, as
amended,  or the rules and regulations of the Securities and Exchange Commission
thereunder. Except as provided in this paragraph, the opinion set forth above is
expressed  solely for the benefit of the addressee  hereof and may not be relied
upon by, or filed with,  any other person or entity for any purpose  without our
prior written consent.

                                                         Sincerely,

                                        MORRIS, NICHOLS, ARSHT & TUNNELL


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



As independent  public  accountants,  we hereby consent to the  incorporation by
reference in this  registration  statement of our report dated  October 31, 1996
for Pioneer Mid-Cap Fund and to all references to our firm included in or made a
part of  Post-Effective  Amendment No. 22 and  Amendment No. 22 to  registration
statement File Nos. 2-79140 and 811-3564, respectively.




                                                           
/s/ ARTHUR ANDERSEN LLP




Boston, Massachusetts
January 23, 1997


[ARTICLE] 6
[CIK] 0000706155
[NAME] PIONEER MID-CAP FUND
[SERIES]
   [NUMBER] 001
   [NAME] PIONEER MID-CAP CLASS A
[MULTIPLIER] 1,000
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          SEP-30-1996
[PERIOD-END]                               SEP-30-1996
[INVESTMENTS-AT-COST]                           745519
[INVESTMENTS-AT-VALUE]                         1009083
[RECEIVABLES]                                    13628
[ASSETS-OTHER]                                      24
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                                 1022735
[PAYABLE-FOR-SECURITIES]                          4101
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                         5139
[TOTAL-LIABILITIES]                               9240
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                        661790
[SHARES-COMMON-STOCK]                            47735
[SHARES-COMMON-PRIOR]                            50391
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                          88141
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                        263564
[NET-ASSETS]                                   1013495
[DIVIDEND-INCOME]                                12426
[INTEREST-INCOME]                                 5244
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                  (8939)
[NET-INVESTMENT-INCOME]                           8731
[REALIZED-GAINS-CURRENT]                        100500
[APPREC-INCREASE-CURRENT]                      (28131)
[NET-CHANGE-FROM-OPS]                            81100
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      (14724)
[DISTRIBUTIONS-OF-GAINS]                       (84356)
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                           2024
[NUMBER-OF-SHARES-REDEEMED]                       9576
[SHARES-REINVESTED]                               4895
[NET-CHANGE-IN-ASSETS]                         (50670)
[ACCUMULATED-NII-PRIOR]                           6320
[ACCUMULATED-GAINS-PRIOR]                        71679
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                             4935
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                   9092
[AVERAGE-NET-ASSETS]                           1007776
[PER-SHARE-NAV-BEGIN]                            21.48
[PER-SHARE-NII]                                   0.18
[PER-SHARE-GAIN-APPREC]                           1.47
[PER-SHARE-DIVIDEND]                            (0.30)
[PER-SHARE-DISTRIBUTIONS]                       (1.71)
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              21.12
[EXPENSE-RATIO]                                   0.90
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
<PAGE>
[ARTICLE] 6
[CIK] 0000706155
[NAME] PIONEER MID-CAP FUND
[SERIES]
   [NUMBER] 002
   [NAME] PIONEER MID-CAP CLASS B
[MULTIPLIER] 1,000
[PERIOD-TYPE]                  OTHER
[FISCAL-YEAR-END]                          SEP-30-1996
[PERIOD-END]                               SEP-30-1996
[INVESTMENTS-AT-COST]                           745519
[INVESTMENTS-AT-VALUE]                         1009083
[RECEIVABLES]                                    13628
[ASSETS-OTHER]                                      24
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                                 1022735
[PAYABLE-FOR-SECURITIES]                          4101
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                         5139
[TOTAL-LIABILITIES]                               9240
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                        661790
[SHARES-COMMON-STOCK]                              235
[SHARES-COMMON-PRIOR]                                0
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                          88141
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                        263564
[NET-ASSETS]                                   1013495
[DIVIDEND-INCOME]                                12426
[INTEREST-INCOME]                                 5244
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                  (8939)
[NET-INVESTMENT-INCOME]                           8731
[REALIZED-GAINS-CURRENT]                        100500
[APPREC-INCREASE-CURRENT]                      (28131)
[NET-CHANGE-FROM-OPS]                            81100
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                          (8)
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                            266
[NUMBER-OF-SHARES-REDEEMED]                         31 
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                         (50670)
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                             4935
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                   9092
[AVERAGE-NET-ASSETS]                              1383
[PER-SHARE-NAV-BEGIN]                            19.28
[PER-SHARE-NII]                                   0.12
[PER-SHARE-GAIN-APPREC]                           1.78
[PER-SHARE-DIVIDEND]                            (0.16)
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              21.02
[EXPENSE-RATIO]                                   1.68
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
<PAGE>
[ARTICLE] 6
[CIK] 0000706155
[NAME] PIONEER MID-CAP FUND
[SERIES]
   [NUMBER] 003
   [NAME] PIONEER MID-CAP CLASS C
[MULTIPLIER] 1,000
[PERIOD-TYPE]                   OTHER
[FISCAL-YEAR-END]                          SEP-30-1996
[PERIOD-END]                               SEP-30-1996
[INVESTMENTS-AT-COST]                           745519
[INVESTMENTS-AT-VALUE]                         1009083
[RECEIVABLES]                                    13628
[ASSETS-OTHER]                                      24
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                                 1022735
[PAYABLE-FOR-SECURITIES]                          4101
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                         5139
[TOTAL-LIABILITIES]                               9240
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                        661790
[SHARES-COMMON-STOCK]                               18
[SHARES-COMMON-PRIOR]                                0
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                          88141
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                        263564
[NET-ASSETS]                                   1013495
[DIVIDEND-INCOME]                                12426
[INTEREST-INCOME]                                 5244
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                  (8939)
[NET-INVESTMENT-INCOME]                           8731
[REALIZED-GAINS-CURRENT]                        100500
[APPREC-INCREASE-CURRENT]                      (28131)
[NET-CHANGE-FROM-OPS]                            81100
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                          (1)
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                             18
[NUMBER-OF-SHARES-REDEEMED]                          0
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                         (50670)
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                             4935
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                   9092
[AVERAGE-NET-ASSETS]                               206
[PER-SHARE-NAV-BEGIN]                            19.28
[PER-SHARE-NII]                                   0.03
[PER-SHARE-GAIN-APPREC]                           1.93
[PER-SHARE-DIVIDEND]                            (0.12)
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              21.12
[EXPENSE-RATIO]                                   1.96
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


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