PIONEER THREE
497, 1995-04-04
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                                                            April 3, 1995

                                   SUPPLEMENT
                            to the prospectuses for:


Pioneer II                                       January 27, 1995
Pioneer Three                                    January 27, 1995
Pioneer Capital Growth Fund                      February 24, 1995
Pioneer Equity-Income Fund                       February 24, 1995
Pioneer Gold Shares                              February 24, 1995
Pioneer Europe Fund                              February 28, 1995
Pioneer Bond Fund                                October 28, 1994
Pioneer California Double Tax-Free Fund          January 27, 1995
Pioneer Massachusetts Double Tax-Free Fund       January 27, 1995
Pioneer New York Triple Tax-Free Fund            January 27, 1995
 


                             How to Buy Fund Shares


In addition to the exceptions listed in each Fund's  prospectus,  Class A shares
of a Fund may be sold at net asset  value per  share  without a sales  charge to
Optional  Retirement  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  company  providers  to  Program
participants and (iv) the Program provides for a matching  contribution for each
participant contribution.







                                        0495-2419
                                        (c) Pioneer Funds Distributor, Inc.

<PAGE>

[Pioneer logo} 

Pioneer 
Three 
Prospectus 
January 27, 1995 

The investment objectives of Pioneer Three (the "Fund") are reasonable income 
and growth of capital. The Fund seeks these objectives by investing in a 
broad list of carefully selected, reasonably priced securities rather than in 
securities whose prices reflect a premium resulting from their current market 
popularity. Pioneer Three's investments are focused on small and medium-sized 
companies; therefore, securities purchased will generally be limited to those 
issued by companies with market capitalizations not exceeding $750 million. 

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 small and medium-sized 
companies may be subject to greater short-term price fluctuations than 
investments in the securities of large companies. 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 Objectives and Policies" 
for a discussion of these risks. 

This Prospectus (Part A of the Registration Statement) provides the 
information about the Fund you should know before investing in the Fund. 
Please read and retain it for your future reference. More information about 
the Fund is included in Part B, the Statement of Additional Information, also 
dated January 27, 1995, which is incorporated into this Prospectus by 
reference. A copy of the Statement of Additional Information and the Fund's 
most recent Annual Report 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. 


                TABLE OF CONTENTS                                        PAGE 

I.              EXPENSE INFORMATION                                         2 
II.             FINANCIAL HIGHLIGHTS                                        3 
III.            INVESTMENT OBJECTIVES AND POLICIES                          4 
IV.             MANAGEMENT OF THE FUND                                      4 
V.              DISTRIBUTION PLAN                                           5 
VI.             INFORMATION ABOUT FUND SHARES                               6 
                 How to Purchase Shares                                     6 
                 Net Asset Value and Pricing of Orders                      7 
                 Dividends, Distributions and Taxation                      7 
                 Redemptions and Repurchases                                8 
                 Redemption of Small Accounts                               9 
                 Description of Shares and Voting Rights                    9 
VII.            SHAREHOLDER SERVICES                                        9 
                 Account and Confirmation Statements                       10 
                 Additional Investments                                    10 
                 Automatic Investment Plans                                10 
                 Financial Reports and Tax Information                     10 
                 Distribution Options                                      10 
                 Directed Dividends                                        10 
                 Direct Deposit                                            10 
                 Voluntary Tax Withholding                                 10 
                 Exchange Privilege                                        10 
                 Telephone Transactions and Related Liabilities            11 
                 Telecommunications Device for the Deaf                    11 
                 Retirement Plans                                          11 
                 Systematic Withdrawal Plans                               11 
                 Reinstatement Privilege                                   11 
VIII.           INVESTMENT RESULTS                                         12 


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

<PAGE>
 
I. EXPENSE INFORMATION 
This 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. The information in the table below is an estimate based on actual 
expenses for the year ended September 30, 1994, expressed as a percentage of 
the average net assets of the Fund. 


 Shareholder Transaction Expenses: 
 Maximum Sales Charge on Purchases(1)                                     5.75% 
 Maximum Sales Charge on Reinvestment of Dividends                        none 
 Deferred Sales Charge(1)                                                 none 
 Redemption Fee(2)                                                        none 
 Exchange Fee                                                             none 
Annual Operating Expenses (as a percentage of average net assets): 
 Management Fee                                                           0.46% 
 12b-1 Fees                                                               0.18% 
 Other Expenses (including shareholder accounting and transfer 
    agent fees, custodian fees and printing expenses)                     0.22% 
Total Operating Expenses:                                                 0.86% 


(1) Purchases of $1,000,000 or more and certain purchases by participants in 
a "Group Plan" (as described under "How to Purchase Shares") are not subject 
to an initial sales charge. A contingent deferred sales charge of 1% may, 
however, be charged on redemptions by such accounts of shares held less than 
one year, as further described under "Redemptions and Repurchases". 

(2) Separate fees (currently $10 and $20, respectively) apply to domestic and 
international bank wire transfers of redemption proceeds. 

Example: 
You would pay the following expenses on a $1,000 investment assuming a 5% 
annual return and redemption at the end of each time period: 

  One Year       Three Years      Five Years       Ten Years 
     $66             $83*            $102*           $157* 


*These are cumulative totals; the average fees and expenses paid over a 
10-year period would be approximately $15.70 per year. 

The example above assumes reinvestment of all dividends and distributions and 
that the percentage amounts listed under "Annual Operating Expenses" remain 
the same each year. 

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 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, including information regarding the basis upon which 
management fees and 12b-1 fees are paid, see "Management of the Fund," 
"Distribution Plan" and "How To Purchase Shares" in this Prospectus and 
"Management of the Fund" and "Underwriting Agreement and Distribution Plan" 
in the Statement of Additional Information. The Fund's payment of a Rule 
12b-1 fee may result in long-term shareholders indirectly paying more than 
the economic equivalent of the maximum sales charge permitted under the 
National Association of Securities Dealers, Inc. ("NASD") Rules of Fair 
Practice. 

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

<PAGE>
 
II. FINANCIAL HIGHLIGHTS 
The following information has been derived from financial statements which 
have been audited by Arthur Andersen LLP, independent public accountants, in 
connection with their examination of the Fund's financial statements. Arthur 
Andersen LLP's report on the Fund's financial statements as of September 30, 
1994 appears in the Fund's Annual Report which is incorporated by reference 
in 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 Three 
Financial Highlights For A Share Outstanding Throughout Each Period 

<TABLE>
<CAPTION>
                                                              For the Year Ended September 30, 
                              1994        1993       1992      1991      1990      1989      1988      1987      
1986      1985 
<S>                       <C>         <C>         <C>       <C>       <C>       <C>       <C>       <C>       <C>         
Net asset value, 
  beginning of period     $    21.12  $    18.03  $  16.16  $  12.96  $  17.80  $  15.09  $  18.52  $  16.01  $  13.98    
$  13.19 
Income from investment 
  operations-- 
 Net investment incom     $    0.244  $    0.284  $  0.326  $  0.407  $  0.413  $  0.415  $  0.301  $  0.279  $  0.336    
$  0.340 
 Net realized and 
  unrealized gain (loss) 
  on  investments              0.316       3.720     2.044     3.943    (3.563)    3.335    (1.911)    3.757     
2.414       0.965 
  Total income (loss) 
  from investment 
    operations            $    0.560  $    4.004  $  2.370  $  4.350  $ (3.150) $  3.750  $ (1.610) $  4.036  $  2.750    
$  1.305 
Distribution to 
  shareholders from-- 
 Net investment income         0.250      (0.290)   (0.350)   (0.410)   (0.460)   (0.360)   (0.410)   (0.360)   
(0.360)     (0.340) 
 Net realized capital 
  gains                       (1.510)     (0.620)   (0.150)   (0.740)   (1.230)   (0.680)   (1.410)   (1.165)   
(0.360)     (0.175) 
Net increase (decrease) 
  in net asset value      $   (1.200) $    3.094  $  1.870  $  3.200  $ (4.840) $  2.710  $ (3.430) $  2.511  $  2.030    
$  0.790 
Net asset value, end of 
  period                  $    19.92  $    21.12  $  18.03  $  16.16  $  12.96  $  17.80  $  15.09  $  18.52  $  16.01    
$  13.98 
  Total return*                 2.62%      22.82%    15.05%    35.80%   (19.39%)   26.32%    (6.00%)   27.50%    
20.40%      10.21% 
Ratio of net operating 
  expenses to average net 
  assets                        0.86%       0.84%     0.85%     0.74%     0.71%     0.72%     0.76%     0.68%     
0.71%       0.75% 
Ratio of net investment 
  income to average net 
  assets                        1.19%       1.43%     1.85%     2.72%     2.58%     2.56%     2.15%     1.74%     
2.41%       3.08% 
Portfolio turnover rate           15%         18%       12%        5%       14%       16%       12%       23%       
24%         11% 
Net assets end of period 
  (in thousands)          $1,017,233  $1,019,059  $779,631  $692,344  $562,343  $752,135  $616,953  $734,300  $543,173    
$369,080 

</TABLE>

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

<PAGE>
 
III. INVESTMENT OBJECTIVES AND POLICIES
The objectives of the Fund are 
reasonable income and growth of capital. The Fund seeks these objectives by 
investing in a broad list of carefully selected, reasonably priced securities 
rather than in securities whose prices reflect a premium resulting from their 
current market popularity. As all investments are subject to inherent market 
risks and fluctuations in value due to earnings, economic conditions and 
other factors, the Fund, of course, cannot give assurance that its investment 
objectives will be achieved. 

The major portion of the Fund's assets will be invested in equity securities, 
including common and preferred stocks and securities convertible into common 
or preferred stocks. Assets of the Fund will be substantially fully invested 
at all times and, by this means, management intends to avoid speculating upon 
broad changes in the level of the market. 

In general, the largest portion of the Fund's portfolio, at any time, will 
consist of securities which have yielded their holders an interest or 
dividend return within the preceding twelve months; but non-income-producing 
securities may be held for anticipated increases in value. 

It is the policy of the Fund not to engage in trading for short-term profits 
and the Fund intends to limit its portfolio turnover to the extent 
practicable. 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 investment decision, and usually without reference to the length 
of time a security has been held. Accordingly, the portfolio turnover rate 
will not be considered a limiting factor in the execution of investment 
decisions. 

The Fund may enter into repurchase agreements with banks, generally not 
exceeding seven days. Such repurchase agreements will be fully collateralized 
with United States Treasury and/or U.S. government agency obligations with a 
market value of not less than 100% of the obligation, valued daily. 
Collateral will be held in a segregated, safekeeping account for the benefit 
of the Fund. 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 objectives and policies above may not be changed without shareholder 
approval. Other investment policies and restrictions on investment are 
described in the Statement of Additional Information. These other investment 
policies and restrictions on investments include a restriction limiting loans 
by the Fund to the purchase of certain debt securities, loans of portfolio 
securities and repurchase agreements, policies permitting the Fund to invest 
up to 10% of its assets in foreign securities and up to 5% of its assets in 
readily marketable equity securities of real estate investment trusts 
(REITs), and a policy that the Fund will invest only in corporations with 
market capitalizations not exceeding $750,000,000 on the date of the Fund's 
initial investment ("Qualifying Investments"). The Fund may make follow-on 
investments to any of its Qualifying Investments, notwithstanding any 
increase in the aggregate market value of the outstanding capital stock of 
any of the corporations in which it has made Qualifying Investments. In 
addition, no more than 5% of the Fund's net assets may be invested in debt 
securities, including convertible securities, which are rated below 
investment grade or the equivalent. 

Investing in securities of non-U.S. companies and countries involves certain 
considerations and risks which are not typically associated with investing in 
U.S. government securities and securities of domestic companies. Non-U.S. 
companies are not generally subject to uniform accounting, auditing and 
financial standards and requirements comparable to those applicable to U.S. 
companies. There may also be less government supervision and regulation of 
non-U.S. securities exchanges, brokers and listed companies than exists in 
the United States. Interest and dividends paid by non-U.S. issuers may be 
subject to withholding and other foreign taxes which may decrease the net 
return on such investments as compared to interest or dividends paid to the 
Fund by the U.S. government or by domestic companies. In addition, there may 
be the possibility of expropriations, confiscatory taxation, political, 
economic or social instability or diplomatic developments which could affect 
assets of the Fund held in foreign countries. The value of non-U.S. 
securities may be adversely affected by fluctuations in the relative rates of 
exchange between the currencies of different nations and by exchange control 
regulations. There may be less publicly available information about non-U.S. 
companies and governments compared to reports and ratings published about 
U.S. companies. Non-U.S. securities markets have substantially less volume 
than domestic markets and securities of some non-U.S. companies are less 
liquid and more volatile than securities of comparable U.S. companies. 
Brokerage commissions, custodial services and other costs related to 
investment in non-U.S. securities markets generally are more expensive than 
in the United States. See "Investment Policies and Restrictions" in the 
Statement of Additional Information. 

The Fund has the ability to hold a portion of its assets in foreign 
currencies and to enter into forward foreign currency contracts to facilitate 
settlement of foreign securities transactions or to protect against changes 
in foreign currency exchange rates. A forward foreign currency contract 
involves an obligation to purchase or sell a specific currency on a future 
date, at a price set at the time of the contract. The Fund might sell a 
foreign currency on either a spot or forward basis to hedge against an 
anticipated decline in the dollar value of securities in its portfolio or 
securities it intends or has contracted to sell or to preserve the U.S. 
dollar value of dividends, interest or other amounts it expects to receive. 
Although this strategy could minimize the risk of loss due to a decline in 
the value of the hedged foreign currency, it could also limit any potential 
gain which might result from an increase in the value of the currency. 
Alternatively, the Fund might purchase a foreign currency or enter into a 
forward purchase contract for the currency to preserve the U.S. dollar price 
of securities it is authorized to purchase or has contracted to purchase. 

IV. MANAGEMENT OF THE FUND 
The Fund's Board of Trustees 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 Man 

<PAGE>
 
agement Corporation ("PMC") 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 background of each Trustee and 
executive officer of the Fund. 

The Fund is managed under a contract with PMC. 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 Delaware corporation. Pioneer Funds Distributor, Inc. ("PFD"), a 
wholly-owned subsidiary of PGI, is the principal underwriter of shares of the 
Fund. 

Each domestic equity portfolio managed by PMC, including this Fund, is 
overseen by an Equity Committee, which consists of PMC's most senior equity 
professionals, and a Portfolio Management Committee, which consists of PMC's 
domestic equity portfolio managers. Both committees are chaired by Mr. David 
Tripple, PMC's President and Chief Investment Officer and Executive Vice 
President of each of the Funds. Mr. Tripple joined PMC in 1974 and has had 
general responsibility for PMC's investment operations and specific portfolio 
assignments for more than the last five years. Mr. Robert W. Benson is 
primarily responsible for the day-to-day management of the Fund. Mr. Benson 
joined PMC in 1974 and is Senior Vice President of PMC and Vice President of 
the Fund. 

In addition to the Fund, PMC also manages and serves as the investment 
adviser for other mutual funds and is an investment adviser to certain other 
institutional accounts. PMC's and PFD's executive offices are located at 60 
State Street, Boston, Massachusetts 02109. 

Under the terms of its contract with the Fund, PMC assists in the management 
of the Fund and is authorized in its discretion to buy and sell securities 
for the account of the Fund, subject to the right of the Fund's Trustees to 
disapprove any such purchase or sale. PMC pays all the expenses, including 
executive salaries and the rental of office space, related to its services 
for the Fund with the exception of the following, which are paid by the Fund: 
(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 the Securities and Exchange Commission, 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 custodians, 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 share certificates; (m) bookkeeping and 
appraisal charges; and (n) distribution fees in accordance with the Plan of 
Distribution described below. The Fund also pays all brokerage commissions 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 where 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 any Pioneer mutual fund. See the Statement of Additional 
Information for a further description of PMC's brokerage allocation 
practices. 

As compensation for its management services and certain expenses which PMC 
incurs, PMC is entitled to a management fee equal to 0.50% per annum of the 
Fund's average daily net assets up to $250 million, 0.48% of the next $50 
million, and 0.45% of the excess over $300 million. The fee is normally 
computed daily and paid monthly. During the fiscal year ended September 30, 
1994, the Fund incurred expenses of approximately $8,868,000, including 
management fees paid or payable to PMC of approximately $4,801,000. 

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 15% of the outstanding capital stock of PGI as of the date of 
this Prospectus. 

V. DISTRIBUTION PLAN 
The Fund has adopted a Plan of Distribution (the "Plan") in accordance with 
Rule 12b-1 under the 1940 Act pursuant to which certain distribution fees are 
paid to PFD. As required by Rule 12b-1, the Plan was approved by a majority 
of the outstanding shares held by the shareholders of the Fund and by the 
Trustees, including a majority of the Trustees who are not "interested 
persons" of the Fund. 

Pursuant to the Plan, the Fund reimburses PFD for its actual expenditures to 
finance any activity primarily intended to result in the sale of Fund shares 
or to provide services to Fund shareholders, 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 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; (ii) reimbursement to PFD for its 
expenditures for broker-dealer commissions and employee compensation on 
certain sales of the Fund's shares with no initial sales charge (See "How to 
Purchase Shares"); and (iii) reimbursement to PFD for expenses incurred in 
providing services to 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 Plan are accrued daily and may not 
exceed 0.25% of average daily net assets. Distribution expenses of PFD are 
expected to substantially exceed the distribution fees paid by the Fund in a 
given year. The Plan does not provide for the carryover of reimbursable 

<PAGE>
 
expenses beyond 12 months from the time the Fund is first invoiced for an 
expense. The limited carryover provision in the Plan may result in an expense 
invoiced to the Fund in one fiscal year being paid in the subsequent fiscal 
year and thus being treated for purposes of calculating the maximum 
expenditures of the Fund as having been incurred in the subsequent fiscal 
year. In the event of termination or non-continuance of the Plan, the Fund 
has 12 months to reimburse any expense which it incurs prior to such 
termination or non-continuance, provided that payments by the Fund during 
such 12-month period shall not exceed 0.25% of the Fund's average net daily 
assets during such period. The 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. 

VI. INFORMATION ABOUT FUND SHARES 

How to Purchase Shares 

Shares of the Fund may be purchased at the public offering price from any 
securities broker-dealer having a sales agreement with PFD. The minimum 
initial investment is $1,000, except for accounts being established to 
utilize monthly bank drafts, government allotments and other similar 
automatic investment plans. The minimum investment for these plans, as well 
as all other subsequent additions to an account, is $50. Separate minimum 
investment requirements apply to retirement plans and no sales charges or 
minimum requirements apply to the reinvestment of dividends or capital gains 
distributions. 

The public offering price is the net asset value per share next computed 
after receipt of a purchase order, plus a sales charge as follows: 

                                        

                                                                     Dealer 
                                       Sales Charge as a % of      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 

No sales charge is payable at the time of purchase on investments of 
$1,000,000 or more, but for such investments a contingent deferred sales 
charge ("CDSC") of 1% is imposed in the event of certain redemption 
transactions within one year of purchase. See "Redemptions and Repurchases" 
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 
$1 million invested; 0.50% on the next $4 million; and 0.10% on the excess 
over $5 million. These commissions will not be paid 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 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 commission paid or a pro rata portion thereof if the retirement 
plan redeems its shares within 12 months of purchase. See also "Redemptions 
and Repurchases." In connection with PGI's acquisition of Mutual of Omaha 
Fund Management Company and contingent upon the achievement of certain sales 
objectives, PFD pays 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. Shares sold outside the U.S. to persons who are not U.S. citizens may 
be subject to different sales charges, CDSCs and dealer compensation 
arrangements in accordance with local laws and business practices. 

The schedule of sales charges above is applicable to purchases of shares of 
the Fund by (i) an individual, (ii) an individual, 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, although more than 
one beneficiary is involved. 

The sales charge applicable to a current purchase of 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 current offering price) of shares of any 
of the 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 so qualify. (Pioneer mutual funds include all mutual 
funds for which PFD serves as principal underwriter). For example, a person 
investing $5,000 in the Fund who currently owns shares of the Pioneer funds 
with a value of $45,000 would pay a sales charge of 4.50% of the offering 
price on the new investment. 

Sales charges may also be reduced through an agreement to purchase a 
specified quantity of shares over a designated 13-month period by completing 
the "Letter of Intention" section of the Account Application. Information 
about the Letter of Intention procedure, including its terms, is contained in 
the Account Application as well as in the Statement of Additional 
Information. 

Shares of the Fund may be sold at a reduced or eliminated sales charge to 
certain group plans under which a sponsoring organization makes 
recommendations to, permits group solicitation of, or otherwise facilitates 
purchases by, its employees, members or participants. Information about such 
arrangements is available from PFD. 

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 
employees and partners of its legal counsel; (b) current or former directors, 
officers, employees or sales representatives of PGI or 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 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 listed 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 

<PAGE>
 
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 depends upon the receipt by PFD of 
written notification of eligibility. Shares 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. 

Investors who are clients of a broker-dealer with a current sales agreement 
with PFD may purchase 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 shares of the Fund; 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. 

Net Asset Value and Pricing of Orders 

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 the Fund is determined by dividing the value of its assets, less 
liabilities, by the number of shares outstanding. The net asset value is 
computed once daily, on each day the New York Stock Exchange (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 last 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 regular trading hours on 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 regular trading 
hours on 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 regular trading hours on 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. 

An order for shares received by a broker-dealer prior to the close of regular 
trading on the Exchange (currently 4:00 P.M. Eastern Time) is confirmed at 
the redemption price 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 PFD's close of business. An order received by a 
broker-dealer following the close of regular trading on the Exchange will be 
confirmed at the redemption price as of the close of regular trading on the 
Exchange on the next trading day. 

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. 

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 the Internal Revenue Code 
of 1986, as amended (the "Code"), so that it will not pay federal income 
taxes on income and capital gains distributed to shareholders at least 
annually. 

Under the Code, the Fund will be subject to a nondeductible 4% excise tax on 
a portion of its undistributed 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. 
Distributions from net short-term capital gains, if any, may be paid with 
such dividends; distributions from net long-term capital gains will normally 
be made once a year, in December. Distributions of dividends and capital 
gains may also be made at such times as may be necessary to avoid federal 
income or excise tax. Dividends from the Fund's net investment income, 
certain net foreign exchange gains, and net short-term capital gains are 
taxable 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 annually. 

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 a 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 the shareholder is not 
subject to such backup withholding or the Fund receives notice from the IRS 
or a broker that such withholding applies. Please refer to the Account 
Application for additional information. 

<PAGE>
 
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. Shareholders should consult their own tax advisors 
regarding these matters, and regarding state, local and other applicable tax 
laws. 

Redemptions and Repurchases 
Redemptions by Mail 

As a shareholder, you have the right to offer your shares for redemption by 
delivering to Pioneering Services Corporation ("PSC") a written request for 
redemption, signed by all registered owners, in proper form and, if 
applicable, your share certificates properly endorsed and in good order for 
transfer. Redemptions will be made in cash less any applicable CDSC at the 
net asset value per share next determined following receipt by PSC of all 
necessary documents. 

Good order means that the certificates must be endorsed by the record 
owner(s) exactly as the shares are registered and the signature(s) must be 
guaranteed by any of the following eligible guarantor institutions: (i) all 
brokers, dealers, municipal securities dealers and/or brokers, and government 
securities dealers and/or brokers who are members of a clearing agency or 
whose net capital exceeds $100,000; (ii) all banks; (iii) all credit unions; 
(iv) all savings associations, including all savings and loan associations; 
(v) all national securities exchanges, registered securities associations, 
and all clearing agencies; and (vi) all trust companies. In addition, in some 
cases (involving fiduciary or corporate transactions), good order may require 
the furnishing of additional documents. Signature guarantees may be waived 
for redemption requests of $50,000 or less, provided that the record holder 
executes the redemption request, and payment is directed to the record holder 
at the address of record and the address has not changed for the previous 30 
days. You cannot provide a signature guarantee by facsimile ("fax"). Payment 
normally will be made within seven days after receipt of these documents. The 
Fund reserves the right to withhold payment until checks received in payment 
of shares purchased have cleared, which may take up to 15 calendar days from 
the purchase date. For additional information about the necessary 
documentation for redemption by mail, please contact PSC at 1-800-225-6292. 

Redemptions by Telephone or Fax 

Your account is automatically authorized to have the telephone redemption 
privilege unless you indicated otherwise on your Account Application or by 
writing to PSC. Proper account identification will be required for each 
telephone redemption. The telephone redemption option is not available to 
retirement plan accounts. A maximum of $50,000 may be redeemed by telephone 
or fax and the proceeds may be received by check or by bank wire. 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: 
the wire 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 instruction to PSC by mail. See "Telephone Transactions 
and Related Liabilities" below. Telephone redemptions will be priced as 
described above. 

Additional Conditions of Redemption 

For the convenience of shareholders, the Fund has authorized PFD to act as 
its agent in the repurchase of shares of the Fund. Offers to sell shares to 
the Fund may be communicated to PFD by wire or telephone by broker-dealers 
for their customers. The Fund's practice will be to repurchase shares offered 
to it at the net asset value per share determined as of the close of regular 
trading on the New York Stock Exchange on the day the offer for repurchase is 
received and accepted by the broker-dealer if the offer is received by PFD 
before the close of business on that day. 

A broker-dealer which receives an offer for repurchase is responsible for the 
prompt transmittal of such offer to PFD. Payment of the repurchase proceeds 
will be made in cash to the broker-dealer placing the order. Except for 
certain large accounts subject to a CDSC (as described below), neither the 
Fund nor PFD charges any fee or commission upon such repurchase which is then 
settled as an ordinary transaction with the broker-dealer (which may charge 
the shareholder for this service) delivering the shares repurchased. Payment 
will be made within seven days of the receipt by PSC of valid instructions, 
including validly endorsed certificates, if appropriate, in good order as 
described above. 

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 upon the 
market value of the portfolio at the time of redemption or repurchase. 
Redemptions and repurchases are taxable transactions to shareholders. 

Redemptions may be suspended or payment postponed during any period in which 
any of the following conditions exists: 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 Securities and Exchange Commission (the 
"SEC"), by order, so permits. 

Purchases of $1,000,000 or more, and purchases by participants in a group 
plan ("Group Plan") which have not been subject to a 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. In determining whether a CDSC is payable, and, 
if so, the amount of the charge, it is assumed that shares purchased with 
reinvested dividend and capital gain distributions and then such other shares 
which are held the longest will be the first redeemed. 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. 

<PAGE>
 
However, no CDSC is payable with respect to purchases of 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. 

Waiver or Reduction of Contingent Deferred Sales Charge. The CDSC on any 
shares subject to a CDSC 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 a Systematic Withdrawal Plan (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 any shares subject to a CDSC 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 any 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. 

Redemption of Small Accounts 

If you hold shares of the Fund in an account with a value of less than $500 
as a result of 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 $500 within six months of notice by the Fund 
to you of the Fund's intention to redeem the shares. 

Description of Shares and Voting Rights 

The Fund is an open-end diversified management investment company (commonly 
referred to as a mutual fund) which was organized as a Massachusetts 
corporation on August 16, 1982 and reorganized as a Massachusetts business 
trust on January 31, 1985. 

The Fund has only one class of shares, entitled Shares of Beneficial 
Interest. Each share represents an equal proportionate interest in the Fund 
with each other share. Shareholders are entitled to one vote for each share 
held and may vote in the election and removal of Trustees and on other 
matters submitted to shareholders. Shares have no pre-emptive or conversion 
rights. Shares are fully-paid and, except as set forth in the Statement of 
Additional Information, non-assessable. Upon liquidation of the Fund, the 
Fund's shareholders would be entitled to share pro rata in the Fund's net 
assets available for distribution. Shares will remain on deposit with PSC and 
certificates will not be issued unless requested. Certificates for fractional 
shares will not be issued. The Fund reserves the right to charge a fee for 
the issuance of certificates. 

The Fund will recognize stock certificates representing shares of Pioneer 
Three, Inc. issued prior to its reorganization as a Massachusetts business 
trust as evidence of ownership of an equivalent number of shares of 
beneficial interest. Any shareholder desiring to surrender a stock 
certificate to the Fund for a share certificate representing an equivalent 
number of shares of beneficial interest may do so by making a written request 
for such exchange to PSC. Such request must be accompanied by the surrendered 
stock certificate which must be endorsed on the back exactly in the manner as 
such certificate is registered. 

The Fund reserves the right to create and issue additional series of shares, 
in which case the shares of each series would participate equally in the 
earnings, dividends and assets of the particular series. Shares of each 
series would be entitled to vote separately to approve investment advisory 
agreements or changes in investment restrictions, but shares of all series 
would be entitled to vote together in the election or selection of Trustees 
and accountants. 

VII. 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 Shareholder Services, 

<PAGE>
 
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. The principal business address 
of the Custodian's Mutual Fund Division is 40 Water Street, Boston, 
Massachusetts 02109. The fees of the transfer agent and the Custodian are 
paid by the Fund. 

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 the 
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 all 
shareholders who have more than one Pioneer 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 investment or 
redemption of shares by mail, automatic reinvestment of dividends and capital 
gains distributions, withdrawal plans, Letters of Intention, Rights of 
Accumulation, telephone exchanges and redemptions, and newsletters. 

Additional Investments 

Additions to a shareholder's account may be made by sending a check ($50 
minimum) to PSC (account number 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 New York Stock Exchange on the day of receipt. 

Automatic Investment Plans 

You may arrange for regular investments of $50 or more through 
government/military allotments or through a Pioneer Investomatic Plan. A 
Pioneer Investomatic Plan provides for a monthly or quarterly investment by 
means of a preauthorized draft drawn on a checking account. Pioneer 
Investomatic Plan investments are voluntary, and you may discontinue the plan 
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 semi-annually. 
In January of each year, the Fund will mail to 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 distributions 
in cash. These two options are not available, however, for retirement plans 
or an account with a net asset value of less than $500. Changes in the 
distribution options may be made by written request to PSC. 

Directed Dividends 

You may elect (in writing) to have the dividends paid by one Pioneer fund 
account invested in a second Pioneer 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., PGA IRA Cust for John Smith may 
only go into another account registered PGA 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 Internal Revenue Service as a credit 
against your federal income taxes. This option is not available for 
retirement plan accounts or for accounts subject to backup withholding. 

Exchange Privilege 

You may exchange your shares of the Fund at net asset value, without a sales 
charge, for shares of other Pioneer funds which do not offer different 
classes of shares or for the Class A shares of those Pioneer funds that offer 
more than one class of shares. There are currently no fees or sales charges 
on such an exchange. 

Exchanges must be at least $1,000. A new Pioneer account opened through an 
exchange must have a registration identical to that on the original account. 
PSC will process exchanges only after receiving an exchange request in proper 
form. An exchange of shares may be made only in states where legally 
permitted. 

Written Exchanges. If the exchange request is in writing, it must be signed 
by all record owner(s) exactly as the shares are registered. If your original 
account includes an Investomatic or Systematic Withdrawal Plan and you open a 
new account by exchange, you should specify whether the plans should continue 
in your new account or remain with your original account. 

<PAGE>
 
Telephone Exchanges. Your account is automatically authorized to have the 
telephone exchange privilege unless you indicated 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, and all telephone exchange requests will be 
recorded. 

Automatic Exchange. You may automatically exchange shares from one Pioneer 
account to another Pioneer account on a regular schedule, either monthly or 
quarterly. The accounts must have identical registrations and the originating 
account must have a minimum balance of $5,000. The exchange will occur on the 
18th day of each month. 

If an exchange request is received by PSC before 4:00 p.m. Eastern Time (or 
before the time that the Exchange closes for regular trading on that day, if 
different), the exchange will be effective on that day if the requirements 
above have been met. If the exchange request is received after 4:00 p.m. 
Eastern Time, the exchange will be effective on the following business day. 

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 federal and (generally) state income tax purposes, an 
exchange represents a sale of the shares exchanged and a purchase of shares 
in another 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. 

To prevent abuse of the exchange privilege to the detriment of other Fund 
shareholders, the Fund and PFD reserve the right to limit the number and/or 
frequency of exchanges and/or to charge a fee for exchanges. 

Telephone Transactions and Related Liabilities 

Your account is automatically authorized to have telephone transaction 
privileges unless you indicated otherwise on your Account Application or by 
writing to PSC. You may sell or exchange your Fund shares by telephone by 
calling 1-800-225-6292 between 8:00 a.m. and 8:00 p.m. Eastern Time on 
weekdays. See "Net Asset Value and Pricing of Orders" 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 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 or 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. 

Telecommunications Device for the Deaf (TDD) 

If you have a hearing disability and you own 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. 

Retirement Plans 

Interested persons should contact the Retirement Plans Department of PSC at 
1-800-622-0176 for information relating to retirement plans for business, 
Simplified Employee Pension Plans, Individual Retirement Accounts (IRAs), 
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 Pioneer Mutual Funds Account 
Application accompanying this Prospectus should not be used to establish any 
of the plans. Separate applications are required. 

Systematic Withdrawal Plans 

If your account has a total value of at least $10,000, you may establish a 
Systematic Withdrawal Plan providing for fixed payments at regular intervals. 
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. You may also direct that withdrawal checks be paid to another 
person, although if you make this designation after you have opened your 
account, a signature guarantee must accompany your instructions. Purchases of 
shares of the Fund at a time when you have a Systematic Withdrawal Plan in 
effect may result in the payment of unnecessary sales charges and may 
therefore be disadvantageous. 

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

Reinstatement Privilege 

If you redeem all or part of your shares of the Fund, you may reinvest all or 
part of the redemption proceeds without a sales commission in 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 shares of the Fund 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 reinvestment occurs. Subject to the 
provisions outlined under "Exchange Privilege" above, you may also reinvest 
in shares of other Pioneer mutual funds; in this case you must meet the 
minimum investment requirement 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. 

<PAGE>
 
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 filling out 
an Account Options Form, which you may request by calling 1-800-225-6292. 

VIII. INVESTMENT RESULTS 
The Fund may include in advertisements, and furnish to existing or 
prospective shareholders, information concerning the average annual total 
return on an investment in the Fund for a designated period of time. Whenever 
this information is provided, it includes a standardized calculation of 
average annual total return computed by determining the average annual 
compounded rate of return that would cause a hypothetical investment (after 
deduction of the maximum sales charge) made on the first day of the 
designated period (assuming all dividends and distributions are reinvested) 
to equal the resulting net asset value of such hypothetical investment on the 
last day of the designated period. The periods illustrated would normally 
include one, five and ten years. These standardized calculations do not 
reflect the impact of federal or state income taxes. 

The computation method above is prescribed for advertising and other 
communications subject to SEC Rule 482. Communications not subject to this 
rule may contain one or more additional measures of investment results, 
computation methods 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. 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. 

The Fund may also include information on other investments or savings 
vehicles and/or unmanaged market indexes, indicators of economic activity, 
averages of mutual funds results or comparative performance information in 
advertising or marketing the Fund's shares. Rankings or listings by 
magazines, newspapers or independent statistical or ratings 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. Therefore, any prior investment results of the Fund should not be 
considered representative of what an investment in the Fund may earn in any 
future period. These factors and possible differences in the methods used in 
calculating investment results should be considered when comparing 
performance information regarding the Fund to information published for other 
investment companies, investment vehicles and unmanaged indexes. The Fund's 
investment results should also be considered relative to the risks associated 
with the Fund's investment objectives and policies. 

For further information about the calculation methods and uses of the Fund's 
investment results, see the Statement of Additional Information. 

<PAGE>
 

Notes 

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Notes 

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THE PIONEER FAMILY OF MUTUAL FUNDS 

Growth Funds 

Pioneer Capital Growth Fund 
Pioneer Growth Shares 
Pioneer International Growth Fund 
Pioneer Europe Fund 
Pioneer Emerging Markets Fund 

Growth and Income Funds 

Pioneer Three 
Pioneer II 
Pioneer Fund 
Pioneer Equity-Income Fund 
Pioneer Winthrop Real Estate Investment Fund 

Income Funds 

Pioneer Income Fund 
Pioneer Bond Fund 
Pioneer America Income Trust 
Pioneer Tax-Free Income Fund 
Pioneer California Double Tax-Free Fund 
Pioneer Massachusetts Double Tax-Free Fund 
Pioneer New York Triple Tax-Free Fund 
Pioneer Intermediate Tax-Free Fund 
Pioneer Short-Term Income Trust 

Specialized Growth 

Pioneer Gold Shares 
Pioneer India Fund 

Money Market Funds 

Pioneer Cash Reserves Fund 
Pioneer Tax-Free Money Fund 
Pioneer U.S. Government Money Fund 

<PAGE>
 
[Pioneer logo] 

Pioneer 
Three 
60 State Street 
Boston, Massachusetts 02109 

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

INVESTMENT ADVISER 
PIONEERING MANAGEMENT CORPORATION 

PRINCIPAL UNDERWRITER 
PIONEER FUNDS DISTRIBUTOR, INC. 

CUSTODIAN 
BROWN BROTHERS HARRIMAN & CO. 

INDEPENDENT PUBLIC ACCOUNTANTS 
ARTHUR ANDERSEN LLP 

LEGAL COUNSEL 
HALE AND DORR 

SHAREHOLDER SERVICES AND TRANSFER AGENT 
PIONEERING SERVICES CORPORATION 
60 State Street 
Boston, MA 02109 
Telephone: (617) 742-7825 

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 
Automated fund yields, 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 

0195-2211 
(C)Pioneer Funds Distributor, Inc. 

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