PARNASSUS FUND
497J, 1996-05-10
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                           1933 Act File No.: 2-93131
                           1940 Act File No.: 811-4044

                       Securities and Exchange Commission
                              Washington, DC 20549

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

                                    Form N-1A

                  REGISTRATION UNDER THE SECURITIES ACT OF 1933


                         Post Effective Amendment No. 13

                                     and/or

                  REGISTRATION UNDER THE INVESTMENT ACT OF 1940

                                Amendment No. 15

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

                               THE PARNASSUS FUND

               (Exact Name of Registrant as Specified in Charter)

                        One Market - Steuart Tower #1600
                             San Francisco, CA 94105

                     (Address of Principal Executive Office)

        Registrant's Telephone Number including Area Code: (415) 778-0200

                                Jerome L. Dodson
                        One Market - Steuart Tower #1600
                             San Francisco, CA 94105

                     (Name and Address of Agent for Service)

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

              It is proposed that this filing will become effective

         On May 1, 1996 pursuant to paragraph (b) of Rule 485

      X  60 days after filing pursuant to paragraph (a) of Rule 485
    -----

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

Issuer has  registered an indefinite  number of securities  under the Securities
Act of 1933 pursuant to Section 270.24f-2 and the Rule 24f-2 notice for issuer's
fiscal year ending December 31, 1995 was filed on February 26, 1996.

<PAGE>




<TABLE>
                               THE PARNASSUS FUND

                              Cross Reference Index


<CAPTION>
                   ITEM                              REFERENCE
                   ----                              ---------
<S>      <C>                                         <C>

Part A.  INFORMATION REQUIRED IN A PROSPECTUS

Item 1.  Cover Page                                  Cover Page
Item 2.  Synopsis; Fee Information                   Fund Expenses (p.2)
Item 3.  Financial Highlights                        Financial Highlights (p.3)
Item 4.  General Description of Registrant           Investment Objective (p.4)
                                                     Principal Investment Restrictions (p.6);
                                                           General Information (p.15)
Item 5.  Management of the Fund                      Management (p.7); The Adviser (p.8)
                                                           General Information (p.15)
Item 6.  Capital Stock and other Securities          Distributions and Taxes (p.13); How to
                                                           How to Purchase Shares (p.9)
                                                           Management (p.7)
Item 7.  Purchase of Securities Being                How to Purchase Shares (p.9)
         Offered
Item 8.  Redemption or Repurchase                    How to Redeem Shares (p.12)
Item 9.  Legal Proceedings                                 None

Part B   INFORMATION REQUIRED IN A STATEMENT OF ADDITIONAL INFORMATION

Item 10. Cover Page                                  Cover Page (B-1)
Item 11. Table of Contents                           Table of Contents (B-1)
Item 12. General Information & History               General (B-8)
Item 13. Investment Objective & Policies             Investment Objectives  & Policies (B-2)
Item 14. Management of the Registrant                Management (B-4)
Item 15. Control Person & Principal Holders          None
                  of Securities
Item 16. Investment Advisory & Other                 The Adviser (B-5)
                  Services
Item 17. Brokerage Allocation & Other                The Adviser (B-5); Portfolio
                  Practices                          Transactions and Brokerage (B-5)
Item 18. Capital Stock & Other Securities                  General (B-8)
Item 19. Purchase, Redemption & Pricing of           Net Asset Value (B-6)
                  Securities Being Offered
Item 20. Tax Status                                  Prospectus (p.13)
Item 21. Underwriters                                Portfolio Transactions and Brokerage (B-5)
Item 22. Calculation of Performance Data                   Performance Advertising and Calculation of Total
                                                           Return and  Yield (B-4); Prospectus
                                                           (p.14)
Item 23. Financial Statements                        Financial Statements (B-8)

</TABLE>

<PAGE>


                                                The Parnassus Fund
                                                   PROSPECTUS
                                                   MAY 1, 1996

INVESTMENT ADVISER
Parnassus Investments
One Market-Steuart Tower #1600
San Francisco, California 94105



LEGAL COUNSEL
Richard D. Silberman, Esq.
465 California Street #1020
San Francisco, California 94104


AUDITORS
Deloitte & Touche LLP
50 Fremont Street
San Francisco, California 94105
   

CUSTODIAN
Union Bank of California
475 Sansome Street
San Francisco, California 94111
    


DISTRIBUTOR
Parnassus Investments
One Market-Steuart Tower #1600
San Francisco, California 94105


<PAGE>


THE PARNASSUS FUND
PROSPECTUS-MAY 1, 1996


- --------------------------------------------------------------------------------
The Parnassus Fund (the "Fund") is a diversified open-end management  investment
company, managed by Parnassus Investments (the "Adviser").  The Fund's principal
investment  objective is to achieve long-term growth of capital;  current income
is a secondary  objective.  The Adviser  chooses  the Fund's  investments  using
social as well as  financial  criteria.  In  general,  the  Adviser  will choose
investments that it believes will have a positive social impact.


This Prospectus  provides you with the basic  information you should know before
investing in the Fund.  You should read it and keep it for future  reference.  A
Statement of  Additional  Information  dated May 1, 1996  containing  additional
information  about the Fund has been  filed  with the  Securities  and  Exchange
Commission and is  incorporated by reference in this Prospectus in its entirety.
You may obtain a copy of the Statement of Additional  Information without charge
by calling or writing the Fund at the address listed above.



TABLE OF CONTENTS
- --------------------------------------------------------------------------------
Fund Expenses                         2          How to Purchase Shares        9
Financial Highlights                  3          How to Redeem Shares         12
The Legend of Mt. Parnassus           3          Distributions and Taxes      13
Investment Policy                     4          Performance Information      14
Principal Investment Restrictions     6          General Information          15
Management                            7
THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

FUND EXPENSES
- --------------------------------------------------------------------------------
The following table  illustrates all expenses and fees that a shareholder of the
Fund will incur.

     SHAREHOLDER TRANSACTION EXPENSES
- --------------------------------------------------------------------------------
Maximum Sales Load Imposed on Purchases ................................. 3.5%
Maximum Sales Load Imposed on Reinvested Dividends ...................... None
Redemption Fees.......................................................... None

   ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS)*
- --------------------------------------------------------------------------------
Management Fees .......................................................... 0.67%
12b-1 Fees  .............................................................. None
Other Operating Expenses    .............................................. 0.44%
                          Transfer Agent & Accounting Fees+............... 0.21%
                          Shareholder Service Fees ....................... 0.09%
                          Reports to Shareholders ........................ 0.06%
Total Fund Operating Expenses ............................................ 1.11%


The purpose of this table is to assist the investor in understanding the various
costs  and  expenses  that  an  investor  in the  Fund  will  bear  directly  or
indirectly. The following example illustrates the expenses that you would pay on
a $1000  investment  over various time periods  assuming (1) a 5% annual rate of
return and (2) redemption at the end of each time period.  As noted in the table
above, the Fund charges no redemption fees of any kind.


    ONE YEAR             THREE YEARS          FIVE YEARS            TEN YEARS
- --------------------------------------------------------------------------------
      $46                   $69                  $94                 $165



<PAGE>


The  expenses  shown  above are  cumulative--not  ones you pay every  year.  For
example, the $165 figure for ten years is not the annual expense figure, but the
total cumulative  expenses a shareholder would have paid for the entire ten-year
period. This example should not be considered a representation of past or future
expenses or  performance.  Actual  expenses  may be greater or lesser than those
shown.  For a  fuller  description  of  expenses,  see  pages  8  and 9 of  this
prospectus. 

From time to time, the Fund may direct  brokerage  commissions to firms that may
pay certain expenses of the Fund subject to "best  execution." This is done only
when brokerage  costs are reasonable and the Fund  determines that the reduction
of expenses is in the best interest of the shareholders. See page B-7 of the SAI
for more  information.  Since this happens on an irregular  basis, the effect on
the expense ratios cannot be calculated with any degree of certainty.



     * All percentages are based on expenses for the fiscal year ended December
31, 1995 except for shareholder service fees which are based on estimates for
1996.


     +The  Fund  will  compensate  Parnassus  Investments  for its  services  as
Transfer  Agent and  Accounting  Agent in the form of fixed fees,  which are not
based upon a percentage of the average net assets of the Fund.

<TABLE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------


Selected data for each share of capital stock outstanding and ratios through the
years ended December 31, 1995,  1994,  1993,  1992, 1991, 1990, 1989, 1988, 1987
and 1986 are as follows:

<CAPTION>
                                           1995      1994      1993     1992    1991     1990      1989     1988     1987     1986
<S>                                     <C>       <C>        <C>      <C>      <C>     <C>      <C>       <C>      <C>      <C>

Net asset value at begining of period   $ 32.82   $ 31.81    $29.94   $23.53   $16.09  $20.62    $20.46   $16.16   $18.09   $17.79
 INCOME FROM INVESTMENT OPERATIONS:
  Net investment income (loss)             0.15      2.73      0.27     0.01     0.06    0.16      0.27    (0.05)   (0.04)   (0.09)
  Net realized and unrealized
   gain (loss) on securities               0.07      1.00      4.84     8.60     8.29   (4.52)     0.30     6.90    (1.19)    0.53
   Total from investment operations        0.22      3.73      5.11     8.61     8.35   (4.36)     0.57     6.85    (1.23)    0.44
- ------------------------------------------------------------------------------------------------------------------------------------
 DISTRIBUTIONS:
  Dividends from net investment
   income                                 (0.16)    (0.47)    (0.25)   (0.04)   (0.06)  (0.17)    (0.18)     .__    (0.03)   (0.03)
  Distributions from net realized
   gain on securities                     (1.11)    (2.25)    (2.99)   (2.16)   (0.85)    .__     (0.23)   (2.55)   (0.67)   (0.11)
   Total distributions                    (1.27)    (2.72)    (3.24)   (2.20)   (0.91)  (0.17)    (0.41)   (2.55)   (0.70)   (0.14)
- ------------------------------------------------------------------------------------------------------------------------------------
 Net asset value at end of period        $31.77    $32.82    $31.81   $29.94   $23.53  $16.09    $20.62  $ 20.46   $16.16   $18.09
====================================================================================================================================

 TOTAL RETURN*                             0.62%    11.98%    17.31%   36.80%   52.56%  (21.16%)   2.85%   42.44%   (7.95%)   2.39%
 RATIOS / SUPPLEMENTAL DATA:
  Ratio of expenses to average
   net assets                              1.02%     1.14%     1.26%    1.47%    1.51%    1.77%    1.65%    2.15%    2.13%    2.58%
  Ratio of net investment income (loss)
   to average net assets                   0.54%     0.43%     0.13%    0.02%    0.26%    0.87%    1.21%  (0.49%)   (0.24%)  (0.13%)
 Portfolio turnover rate                  29.10%    28.10%    21.00%   32.80%   24.61%   38.25%   11.45%   32.34%   31.69%   31.22%
 Net assets, end of period (000's)      $259,133  $160,994   $98,774  $56,237  $31,833  $20,738  $23,048  $10,863  $ 5,374  $ 3,321


<FN>

 * Total return figures do not adjust for the sales charge.
</FN>
</TABLE>


Note:  This  information is taken from audited  financial  statements  that were
published in the Fund's annual reports.  1986 information was audited by Coopers
& Lybrand. 1987-95 information was audited by Deloitte & Touche LLP.




<PAGE>

THE LEGEND OF MT. PARNASSUS
- --------------------------------------------------------------------------------
Parnassus is a mountain in central  Greece whose twin peaks rise more than 8,000
feet above sea level. A dense forest covers the slopes of Mt. Parnassus, but the
summit is rocky and, most of the time,  covered with snow.  The mountain plays a
prominent role in Greek mythology because on its southern slope, overlooking the
Gulf of Corinth, lies Delphi, site of the famous oracle.  Originally, the oracle
belonged to Gaia, the earth goddess.  Later,  Mother Earth was worshipped  under
the name  Delphyne and she  controlled  the oracle  along with her  serpent-son,
Python, and her  priestess-daughters who controlled the rites.  Eventually,  the
Greek god, Apollo,  took over the site, doing away with Python,  but keeping the
priestesses.

The most "Greek" of the gods, Apollo represented  enlightenment and civilization
and presided over the  establishment of cities.  Identified with the development
of Greek codes of law,  Apollo was also the god of light, a master  musician and
skilled  archer.  Legend has it that Python,  an enormous  serpent raised in the
caves of Mt. Parnassus, controlled the site of Delphi. When Apollo, representing
civilization,  challenged  Python,  representing  anarchy,  there  was a  heroic
struggle,  but the god finally  killed the dragon by  shooting a hundred  arrows
into its body.

There were many oracles in ancient Greece, but only the one at Delphi achieved a
record  of  reliability.  Apollo's  temple  at Delphi  soon  became an  enormous
storehouse of treasures that were gifts of those who had consulted the oracle.

The oracle  communicated  through the voice of a priestess  who spoke while in a
trance.  The priests of Delphi,  who  interpreted  the sayings of the priestess,
obtained a great deal of knowledge  and  information  from talking to the people
who came from all over the Greek world to consult at the shrine of Apollo. Quite
often, the oracle went against the prevailing wisdom of the time and frequently,
the proud were humbled and the lowly were justified.


INVESTMENT POLICY
- --------------------------------------------------------------------------------
Objective

The Fund's  investment  objective is to achieve long-term growth of capital with
current income as a secondary objective.  The Fund will attempt to achieve these
objectives by investing  primarily in "equity  securities" based on the criteria
described  below.  "Equity  securities"  consist of common  stocks or securities
having the characteristics of common stocks which include convertible  preferred
stocks,  convertible  debt  securities  or warrants (up to 5% of total  assets).
There can be no assurance that the Fund will achieve its objective.


The Fund's  portfolio will  emphasize  equity  securities  issued by established
companies. Established companies are defined as those that (1) are traded on the
New York Stock  Exchange,  (2) are listed as a "Fortune  500" company or (3) are
traded  either on the  American  Stock  Exchange or the NASD's  National  Market
System and are mature (more than ten years of  continuous  operation)  and pay a
dividend.  The Fund may, however,  invest in equity securities of companies that
may not pay a dividend  and may be traded  over-the-counter;  usually,  not more
than 30% of the Fund's  assets will be so invested.  Securities  of companies in
this 30% category may not have the same liquidity as those of larger  companies.
In general, the Fund will not invest in companies with less than $100 million in
annual sales. 

Policies

The Fund's Adviser uses three basic criteria in selecting equity  securities for
the Fund's portfolio:

     1)  the stock must be selling at a depressed price compared  to  the market
         as a whole and compared to its price history  for  the  past five years
         (see I below);

     2)  the issuer must be financially sound with good prospects for the future
         (see II below); and

     3)  the  issuer  must  have,  in  the  Adviser's  judgment, enlightened and
         progressive management (see III below).

For a stock to be purchased by the Fund, it must meet all of the above criteria.
How the Adviser determines if a stock meets these criteria is discussed below.

    I. The Contrarian Principle. The first criterion listed above can be  called
"contrarian" since it leads to the purchase of stocks that are out of favor with
the investment community. The Adviser expects each stock selected to have:

    1)   a  market  price  no more than 150%  of book value per share except for
smaller or high growth companies which may have a market price of up to 200% of
book value;

    2) a market  price that has  declined to 65% or less of the  highest  market
price achieved during the past five years;

<PAGE>

    3) a price/earnings ratio which is (a) below the price/earnings ratio of all
stocks in the S&P 500 and (b) below its average for the preceding ten years; and


   4) a ratio of market  price to sales per share  below  0.40 or below 1.00 for
high growth or high margin  businesses.  The ratios given above are not absolute
limits,  but  represent  guidelines  followed  by the  Adviser.  A stock  may be
selected  for the  Fund's  portfolio  even if it does not meet all of the  above
tests, but will not be selected if it does not meet any of such tests.


    II. FINANCIAL  CONSIDERATIONS.  The Adviser will apply financial criteria to
each stock  that  meets its  "contrarian"  standards  in an effort to  determine
whether the issuer is  financially  sound and has good prospects for the future.
The Adviser will consider the following factors in determining  whether or not a
company is financially sound:

    1)  financial  strength,  in the form of net  assets,  as  determined  by an
analysis of the company's balance sheet;

    2) total annual sales of the company  compared  to its sales five years ago;

    3) outlook for future earnings;

    4) the company's net cash flow; and

    5) dividend and earnings history for the past ten years.

    III. "RENAISSANCE" FACTORS. There are also five qualitative factors that, in
the Adviser's opinion,  constitute  "enlightened and progressive  management" of
issuers. These factors--known as "Renaissance" Factors--are:

    1) the quality of the company's products and services;

    2) the degree to which the company is marketing-oriented  and stays close to
the customer;

    3) the sensitivity of the company to the communities where it operates;

    4) the company's treatment of its employees; and

    5) the company's ability to innovate and respond well to change.

Although the Fund will  emphasize  positive  reasons for investing in a company,
our operating policies call for excluding  companies that manufacture alcohol or
tobacco  products  or are  involved  with  gambling.  The Fund also  screens out
weapons contractors and those that generate electricity from nuclear power.

On the positive  side,  the Fund looks for a number of important  attributes  to
determine  if  a  firm  is  a  "Renaissance"   company.  These  include  a  good
environmental  protection  policy,  an effective  equal  employment  opportunity
program,  a  record  of civic  commitment  and a  history  of  ethical  business
dealings.

Other Policies

Under  normal  circumstances,  the Fund will have  virtually  all of its  assets
invested in equity securities.  However,  for temporary defensive  purposes,  or
pending the investment of the proceeds from sales of shares of the Fund or sales
of  portfolio  securities,  all or part of the assets may be  invested  in money
market  instruments or in investment grade,  long-term debt securities,  and the
Fund may also enter into  repurchase  agreements,  which  basically  involve the
purchase  by the Fund of debt  securities  and their  resale  at an  agreed-upon
price.  While  the  Fund  intends  to  be  fully  "collateralized"  as  to  such
agreements,  and the  collateral  will be marked to market daily,  if the person
obligated to repurchase from the Fund defaults or enters  bankruptcy,  there may
be delays and expenses in  liquidating  the  securities,  a possible  decline in
their  value  and  potential  loss of  interest.  See  Statement  of  Additional
Information for further details.

<PAGE>
   
PRINCIPAL INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
The Fund is subject to certain  investment  restrictions  which are  fundamental
policies  that  cannot be  changed  without  the  approval  of the  holders of a
majority of the Fund's  outstanding  voting  securities.  The Fund's  investment
objective is such a policy,  as are restrictions  that provide that the Fund may
not (i) with respect to 75% of its net assets,  invest more than 5% of the value
of its net assets in securities of any one issuer (other than obligations issued
or   guaranteed  by  the  United   States   Government,   its  agencies  or  its
instrumentalities);  (ii) with respect to 75% of its net assets,  purchase  more
than 10% of the outstanding  voting  securities or of any class of securities of
any one issuer;  (iii)  invest more than 25% of the value of its total assets in
securities  of issuers in any one  industry;  or (iv) borrow  money  except from
banks for  temporary or emergency  purposes in amounts not  exceeding 10% of the
Fund's total assets.  (The Fund will not make additional  investments while such
borrowings  are  outstanding.)  It is  possible  for the  Fund  to make  limited
investments  in  the  securities  of  other  investment  companies.   Additional
information  about  the  Fund's  investment  restrictions  is  contained  in the
Statement of Additional Information.
    

It is the position of the Securities and Exchange  Commission  (and an operating
although not a fundmental policy of the Fund) that open-end investment companies
such as the Fund should not make certain investments if thereafter more than 15%
of the value of their net assets would be so invested.  The investments included
in this 15% limit are (i) those which are restricted,  i.e.,  those which cannot
freely be sold for legal reasons  (which the Fund does not expect to own);  (ii)
fixed time  deposits  subject to  withdrawal  penalties  (other  than  overnight
deposits);  (iii)  re-purchase  agreements  having a maturity of more than seven
days;  and  (iv)  investments  for  which  market  quotations  are  not  readily
available. However, the 15% limit does not include obligations which are payable
at principal amount plus accrued interest within seven days after purchase.

MANAGEMENT
- --------------------------------------------------------------------------------
The Fund's Board of Trustees decides on matters of general policy and supervises
the activities of the Fund's Adviser.  The Fund's officers conduct and supervise
the daily business  operations of the Fund. The Trustees and officers are listed
below,  together with their principal  occupations during at least the past five
years.

Jerome L.  Dodson*,  President  and  Trustee,  is also  President  of  Parnassus
Investments.  From  1975 to 1982,  Mr.  Dodson  served  as  President  and Chief
Executive Officer of Continental  Savings and Loan Association in San Francisco.
From 1982 to 1984,  he was  President  of Working  Assets Money Fund and he also
served as a Trustee  from 1988 to 1991.  He is a graduate of the  University  of
California at Berkeley and of Harvard  University's  Graduate School of Business
Administration  where he  concentrated  in  finance.  Mr.  Dodson is the  Fund's
portfolio manager.

   
Gail L. Horvath, Trustee, is co-owner and director of new product development at
Just Desserts, a San Francisco-based bakery and cafe.  A co-founder of Just 
Desserts, her experience includes market research, product planning and product 
development.  For four years, she served as director of Continental Savings of 
America.  She is a graduate of Ohio State University.
    

David L. Gibson,  Trustee,  is an attorney in private  practice  specializing in
taxation and personal  financial  planning.  From 1973 to 1984,  he was with the
Crown  Zellerbach  Corporation  where he served as tax counsel  and,  later,  as
Director of Public Affairs. Mr Gibson is active in civic affairs and his special
interests  include  senior  citizens and  environmental  protection.  He holds a
bachelor's  degree  in  business   administration   from  Virginia   Polytechnic
Institute,  an MBA from Golden Gate  University,  a JD from  Washington  and Lee
University and an LLM from William and Mary.

Howard Fong*, Vice President and Treasurer,  is also Vice President of Parnassus
Investments.  Mr.  Fong  began his  career as an  examiner  with the  California
Department of Savings and Loan. In 1979, he joined Continental  Savings where he
worked until 1988,  most recently as Senior Vice  President and Chief  Financial
Officer.  He joined the  Parnassus  Fund in 1988.  Mr. Fong  graduated  from San
Francisco State University with a degree in business administration.

Richard D. Silberman, Secretary, is an attorney specializing in business law. He
has been general  counsel to the Parnassus Fund since its inception.  He holds a
bachelor's degree in business administration from the University of Wisconsin, a
Bachelor of Laws, also from the University of Wisconsin and a Master of Law from
Stanford University. He is a member of both the Wisconsin and California Bars.

*Denotes "interested person" as defined in the Investment Company Act of 1940.

The Adviser


Parnassus  Investments  (the  "Adviser"),  One  Market-Steuart  Tower #1600, San
Francisco,  California 94105 acts as investment  adviser to the Fund, subject to
the control of the Fund's Board of Trustees, and as such supervises and arranges
the  purchase and sale of  securities  held in the  portfolio  of the Fund.  The
Adviser has had eleven years experience  managing the Fund and its President had
previous experience advising investment companies. 



<PAGE>


For its  services,  the  Fund,  under  an  Investment  Advisory  Agreement  (the
"Agreement") between the Fund and the Adviser,  pays the Adviser a fee, computed
and payable at the end of each month, at the following annual percentages of the
Fund's average daily net assets: 1.00% of the first $10 million in assets; 0.75%
of the amount above $10 million in assets up to $30 million; 0.70% of the amount
above $30 million up to $100 million;  0.65% of the amount above $100 million up
to $200  million;  0.60% of the amount  above $200  million up to $400  million;
0.55% of the amount  above $400  million  up to $600  million;  and 0.50% of the
amount  above $600  million.  For 1995,  the Fund paid the Adviser  0.67% of its
average net assets.

In addition to the fee payable to the Adviser,  the Fund is responsible  for its
operating   expenses,   including:   (i)  interest  and  taxes;  (ii)  brokerage
commissions;  (iii) insurance  premiums;  (iv)  compensation and expenses of its
Trustees  other  than those  affiliated  with the  Adviser;  (v) legal and audit
expenses;  (vi) fees and  expenses of the Fund's  cutodian,  transfer  agent and
accounting  services  agent;  (vii)  expenses  incident  to the  issuance of its
shares,  including  issuance on the payment of, or reinvestment  of,  dividends;
(viii) fees and expenses  incident to the  registration  under  Federal or state
securities laws of the Fund or its shares; (ix) expenses of preparing,  printing
and mailing  reports and notices and proxy material to shareholders of the Fund;
(x)  all  other   expenses   incidental  to  holding   meetings  of  the  Fund's
shareholders;  (xi) dues or  assessments of or  contributions  to the Investment
Company  Institute and the Social  Investment  Forum;  (xii) such  non-recurring
expenses as may arise,  including  litigation  affecting  the Fund and the legal
obligations  which the Fund may have to indemnify its officers and Trustees with
respect thereto. In allocating brokerage  transactions,  the investment advisory
agreement  states that the Adviser may consider  research  provided by brokerage
firms or whether  those firms sold  shares of the Fund.  See page B-7 of the SAI
for more information on directed brokerage.


HOW TO PURCHASE SHARES
- --------------------------------------------------------------------------------
Because the sales  charge on its shares is lower than that charged by many other
investment  companies which impose a sales charge, the Parnassus Fund is what is
commonly called a "low load" fund.

Shares of the Fund may be purchased by sending a check  directly to the Adviser,
which is also the Fund's  principal  underwriter  ("Distributor")  (see  "Direct
Purchase of Shares" below), or by ordering shares through a broker-dealer  which
is a member of the National  Associations  of Securities  Dealers,  Inc. and has
signed  a sales  agreement  with  the  Distributor  (see  "Purchases  through  a
Broker-Dealer" below). The purchase price per share is the offering price, which
is the net asset value per share as of the next  calculation  after the order is
placed, plus a sales charge calculated as follows:

SALES CHARGE AS A PERCENTAGE OF
- --------------------------------------------------------------------------------
                                                                DEALER DISCOUNT
                                         OFFERING   NET ASSET   AS A PERCENTAGE
AMOUNT OF TRANSACTION AT OFFERING PRICE   PRICE       VALUE    OF OFFERING PRICE
- --------------------------------------------------------------------------------
Less than $15,000                         3.5%        3.63          3.5%
$15,000 but less than $25,000             3.0         3.09          3.0%
$25,000 but less than $50,000             2.5         2.56          2.5%
$50,000 but less than $100,000            2.0         2.04          2.0%
$100,000 but less than $250,000           1.5         1.52          1.5%
$250,000 but less than $500,000           1.0         1.01          1.0%
$500,000 but less than $1,000,000         0.5         0.50          0.5%
$1,000,000 or more                              No Sales Charge



Investors in the following  categories may combine their purchases into a single
transaction to qualify for a reduced sales charge: 1) an individual,  his or her
spouse and their children  purchasing for his, her or their own account and 2) a
trustee  or other  fiduciary  purchasing  for a single  trust  estate  or single
fiduciary account.

Certain  categories of people may invest in the Parnassus  Fund without paying a
sales charge.  These categories include Trustees,  officers and employees of the
Parnassus Fund and the Fund's  investment  adviser,  representatives  registered
with  the  National  Association  of  Securities  Dealers,   custodial  accounts
qualifying  under Section 403(b) or Section 401(k) of the Internal Revenue Code,
pension,  profit-sharing or other employee benefit plans qualified under section
401 of the  Internal  Revenue  Code and  discretionary  accounts  of bank  trust
departments  and  registered  investment  advisers.  Investors  may be charged a
transaction  or other fee in connection  with  purchases or  redemptions of Fund
shares at net asset value (i.e.  without a sales  charge) on their  behalf by an
investment adviser, a brokerage firm or other financial institution.

Statement of Intention (Letter of Intent)

A single  investor  may also obtain the  reduced  sales  charges  shown above by
completing  a Statement  of  Intention.  By  expressing  in writing an intent to
invest  $15,000 or more within a thirteen  month period,  a single  investor may
also obtain the reduced  sales  charges  shown above.  You can obtain a form for
this  purpose by writing or calling the Fund or you can write your own letter of
intent.

While a shareholder is not obligated to fulfill a letter of intent,  if the goal
is not met, the  purchaser is required to pay the  difference  between the sales
charge  actually  paid and the one that  would  otherwise  have  been due had no
Statement of Intention been signed.

Rights of Accumulation

A single  investor may also obtain a cumulative  quantity  discount  (known as a
right of  accumulation)  by adding his or her current  purchase to the net asset
value (at the close of business on the  previous  day) of all shares  previously
purchased and still owned in the Fund. The applicable sales charge is then based
on this total.  A  shareholder  may also add the total of any  investment in the
Parnassus  Income Fund to the Parnassus  Fund total for purposes of  calculating
the sales charge. To benefit from any right of accumulation (ROA), a shareholder
must identify any ROA links to other accounts and communicate these links to the
Fund's shareholder service staff.


Other Information

The Fund also offers additional  services to investors,  including plans for the
systematic  investment  and  withdrawal  of money as well as IRA and SEP  plans.
Information about these plans is available from the Distributor.


The minimum initial investment in the Fund is $2,000 except for retirement plans
and PAIP  accounts  which have a $500 minimum  initial  investment.  The minimum
additional  investment is $50. The distributor  reserves the right to reject any
order.

Direct Purchase of Shares

An investor should complete and mail an application  form and send it along with
a check  payable  to the  Parnassus  Fund.  It should be sent to the Fund at the
following address:



The Parnassus Fund
One Market-Steuart Tower #1600
San Francisco, California 94105


An initial  investment  must be at least  $2,000  except for PAIP  accounts  and
certain employee benefit plans or tax qualified retirement plans (e.g. IRA, SEP)
which have a $500 minimum.  Subse-quent  investments for all accounts must be at
least $50. With subsequent  investments,  shareholders should write the name and
number of the account on the check. Checks do not need to be certified,  but are
accepted  subject to collection  and must be drawn in United  States  dollars on
United States banks.  The  investment  will be processed at the public  offering
price  calculated on the same  business day it is received if it arrives  before
1:00 pm San Francisco  time;  otherwise,  it will be processed the next business
day.


<PAGE>

Purchases Via Parnassus Automatic Investment Plan (PAIP)

After making an initial investment to open an account,  a Parnassus  shareholder
may  purchase  additional  shares  ($50  minimum)  via the  Parnassus  Automatic
Investment  Plan  (PAIP).  On a monthly  or  quarterly  basis,  your  money will
automatically  be transferred from your bank account to your Fund account on the
day of your choice (3rd or 18th day of the month).  You can elect this option by
filling out the PAIP section on the new account form.  For further  information,
call the Fund and ask for the free  brochure  called  "Automatic  Investing  and
Dollar-Cost Averaging".

Purchases Through A Broker-Dealer


Broker-dealers may place orders on behalf of clients by calling the Distributor.
If a client  places  an  order  with a  broker-dealer  prior  to 1:00  p.m.  San
Francisco  time on any business day (see below) and the  broker-dealer  forwards
the order to the Distributor  prior to 1:00 p.m. San Francisco time on that day,
the order will be  processed  at the offering  price  calculated  that same day.
Otherwise, the offering price will be calculated as of the close of the NYSE the
next business day. The  broker-dealer is responsible for placing purchase orders
promptly with the Distributor  and for forwarding  payment within three business
days.


Net Asset Value

The Fund's net asset value per share is determined at 4:00 p.m.  Eastern time on
each day that the New York Stock Exchange is open for trading  ("business  day")
and on any other day that there is a sufficient degree of trading in investments
held by the Fund to affect the net asset value,  except that the net asset value
may not be determined on any day that there are no transactions in shares of the
Fund. The net asset value per share is the value of the Fund's assets,  less its
liabilities,  divided by the number of shares of the Fund outstanding. The value
of the Fund's portfolio  securities will be the market value of such securities.
However,  if the Fund's Trustees determine that the market value of any security
is not its fair value,  they may  determine a different  price for that security
that does reflect its fair value.  See the Statement of  Additional  Information
for details.

Telephone Transfers

Shareholders who elect to use telephone transfer  privileges must so indicate on
the  account  application  form.  The  telephone  transfer  privilege  allows  a
shareholder to effect  exchanges  from the Fund into an  identically  registered
account in another one of the Parnassus Funds (e.g. The Parnassus  Income Fund).
Neither  the  Fund  nor  Parnassus  Investments  will be  liable  for  following
instructions communicated by telephone reasonably believed to be genuine; a loss
to the shareholder may result due to an unauthorized  transaction.  The Fund and
Parnassus   Investments  will  employ  reasonable  procedures  to  confirm  that
instructions  communicated by telephone are genuine.  Procedures may include one
or more of the following:  recording all telephone  calls  requesting  telephone
exchanges,   verifying   authorization  and  requiring  some  form  of  personal
identification  prior to acting upon  instructions  and sending a statement each
time a telephone  exchange is made.  The Fund and Parnassus  Investments  may be
liable for any losses due to  un-authorized or fraudulent  instructions  only if
such reasonable  procedures are not followed.  Of course,  shareholders  are not
obligated in any way to authorize telephone transfers and may choose to make all
exchanges  in  writing.  The  telephone  exchange  privilege  may be modified or
discontinued  by  the  Fund  at  any  time  upon  60  days'  written  notice  to
shareholders.


<PAGE>

HOW TO REDEEM SHARES
- --------------------------------------------------------------------------------

You may sell or redeem  your Fund shares by offering  them for  "repurchase"  or
"redemption"  directly to the Fund or through your  dealer.  If you offer shares
through  your dealer  before the close of the New York Stock  Exchange  and your
dealer  transmits your offer to the Distributor  before 1:00 p.m. (San Francisco
time) that day, you will  receive  that day's price.  Your dealer may charge for
this service,  but you can avoid this charge by selling your shares  directly to
the Fund as described below.


To sell your shares  directly to the Fund (that is, to redeem your shares),  you
must send your instructions to the Fund at One  Market-Steuart  Tower #1600, San
Francisco, California 94105. Your shares will be redeemed at the net asset value
next determined  after receipt by the Fund of your  instructions in proper form.
Give your  account  number and indicate the number of shares you wish to redeem.
All owners of the account must sign unless the account  application  form states
that only one signature is necessary for redemptions. All redemption checks must
be  sent  to  the  address-of-record  on  the  account.  The  Fund  must  have a
change-of-address  on file for 30 days before we send redemption or distribution
checks to the new address.  Otherwise,  we require a signature  guarantee or the
check must be sent to the old  address.  The Fund  usually  requires  additional
documents  when shares are  registered  in the name of a  corporation,  agent or
fiduciary or if you are a surviving  joint owner.  In the case of a corporation,
we usually require a corporate  resolution signed by the secretary.  In the case
of an agent or fiduciary,  we usually  require an authorizing  document.  In the
case of a  surviving  joint  owner,  we  usually  require  a copy  of the  death
certificate.  Contact  the  Fund by  phone  at  (800)  999-3505  if you have any
questions about requirements for redeeming your shares.


If the Fund has received  payment for the shares you wish to redeem and you have
provided the  instructions  and any other documents  needed in correct form, the
Fund will promptly send you a check for the proceeds from the sale.  Ordinarily,
the Fund must send you a check  within  seven  days  unless  the New York  Stock
Exchange is closed for other than weekends or holidays.  However, payment may be
delayed for any shares  purchased by check for a reasonable  time (not to exceed
15 days from the date of such purchase) necessary to determine that the purchase
check will be honored.  Rules of the  Securities  and Exchange  Commission  also
authorize  delayed  redemptions  during  periods when trading on the Exchange is
restricted  or during an emergency  which makes it  impractical  for the Fund to
dispose of its securities or to determine  fairly the value of its net assets or
during any other period  authorized  by the  Commission  for the  protection  of
investors.

REINVESTMENT PRIVILEGE. If you redeem some or all of your shares and then change
your mind, you may re-invest them without sales charge at the net asset value if
you do so  within  60 days.  This  privilege  may be  exercised  only  once by a
shareholder  with respect to this Fund.  However,  a shareholder has not used up
this one-time privilege if the sole purpose of a prior redemption was to in-vest
the proceeds at net asset value in an Individual  Retirement  Account or SEP. If
the  shareholder  has  realized a gain on the  redemption,  the  transaction  is
taxable and reinvestment will not alter any capital gains tax payable.  If there
has been a loss on the redemption, some or all of the loss may not be allowed as
a tax deduction  depending on the amount  reinvested.  If a shareholder  redeems
shares  from the  Parnassus  Fund and  invests  the  proceeds  in  shares of the
Parnassus Income Fund, the shareholder may reinvest the proceeds of those shares
back into the Parnassus Fund at any time without a sales charge.

REDEMPTION OF SMALL ACCOUNTS.  The Trustees may, in order to reduce the expenses
of the Fund,  redeem all of the shares of any shareholder whose account is worth
less than $1,000 as a result of a redemption. This will be done at the net asset
value  determined  as of the close of business on the business day preceding the
sending of such  notice of  redemption.  The Fund will give  shareholders  whose
shares are being  redeemed  60 days' prior  written  notice in which to purchase
sufficient shares to avoid such redemption.


<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

By paying out  substantially all its net investment income (among other things),
the  Fund  believes  it  qualifies  as  a  regulated  investment  company  under
Subchapter  M of the  Internal  Revenue  Code.  The Fund  intends to continue to
qualify  and,  if so, it will not pay  federal  income  taxes on either  its net
investment  income or on its capital gains.  Instead,  each  shareholder will be
responsible for his or her own taxes.  All dividends from net investment  income
together with distributions of short-term capital gains  (collectively,  "income
dividends"), will be taxable as ordinary income to shareholders even though paid
in  additional   shares.   Any  net  long-term   capital  gains  ("capital  gain
distributions") distributed to shareholders are taxable as such to shareholders.
Tax-exempt  shareholders,  of course,  will not be  required to pay taxes on any
amounts paid to them.

Income  dividends and capital gains  distributions  will be paid once a year and
they are taxable in the year received.  For the  convenience  of investors,  all
payments  are made in shares of the Fund and there is no sales  charge  for this
reinvestment.  Shareholders  who prefer to receive  payment of income  dividends
and/or  capital gain  distribution  in cash should notify the Fund at least five
days prior to the  payment  date.  Annually,  you will  receive on Form 1099 the
dollar amount and tax status of all Distributions you received.

Under the  Interest and Dividend  Tax  Compliance  Act of 1983,  the Fund may be
required to impose backup withholding at a rate of 20% from any income dividends
and  capital  gain  distributions  and  upon  payment  of  redemption  proceeds.
Shareholders can eliminate any backup withholding requirements by complying with
provisions of that Act relating to the furnishing and  certification of taxpayer
identification numbers and reporting of dividends.

To the extent that income  dividends are derived from qualifying  dividends paid
by domestic corporations whose shares are owned by the Fund, such dividends,  in
the hands of the Fund's  corporate  shareholders,  will be eligible  for the 70%
dividends received deduction.

The  distribution  is usually  made in  December  of each year.  If an  investor
purchases shares just before the  distribution  date, he or she will be taxed on
the distribution even though it's a return of capital.

<PAGE>

PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------

From time to time,  the Fund may advertise  its total return for prior  periods.
Any such  advertisement  would  include at least  average  annual  total  return
quotations for one, five and ten year periods.  The total return of the Fund for
a particular  period  represents  the  increase (or  decrease) in the value of a
hypothetical  investment  in the  Fund,  from  the  beginning  to the end of the
period.  Total  return is  calculated  by  subtracting  the value of the initial
investment  from the ending value and showing the  difference as a percentage of
the initial  investment;  the calculation assumes the initial investment is made
at the maximum public  offering price (maximum sales charge) and that all income
dividends or capital  gains  distributions  during the period are  reinvested in
Fund shares at net asset value. Total return is based on historical earnings and
asset value fluctuations and is not intended to indicate future performance.  No
adjustments  are made to reflect any income  taxes  payable by  shareholders  on
dividends  and  distributions  paid by the Fund.  Average  annual  total  return
quotations  for periods of two or more years are computed by finding the average
annual  compounded  rate of return over the period that would equate the initial
amount invested to the ending redeemable  value.  Quotations of "overall return"
are the same as "total return" except that "overall return"  calculations do not
deduct the sales charge.


Performance  Figures
- --------------------------------------------------------------------------------
FOR PERIODS ENDING      AVERAGE ANNUAL                        AVERAGE ANNUAL
DECEMBER 31, 1995        TOTAL RETURN                         OVERALL RETURN
- --------------------------------------------------------------------------------
One Year                     (2.91%)                               0.62%
Five Years                    21.63%                              22.50%
Ten Years                     11.88%                              12.24%
     Total return is the return to an  individual  shareholder  after paying the
maximum sales charge.


     Overall return gives the investment performance of the Fund. Overall return
does not take into  account  payment of the sales  charge.  This  return  figure
should be used for comparative  purposes such as comparing the Parnassus  Fund's
performance to published returns in newspapers and magazines.

     The  Fund's  annual  report  contains  additional  performance  information
including a discussion by management. You may obtain a copy of the annual report
without charge by calling or writing the Fund.

GENERAL INFORMATION
- --------------------------------------------------------------------------------

The Fund was organized as a  Massachusetts  business trust on April 4,1984.  The
Declaration  of Trust  provides  the  Trustees  will not be liable for errors of
judgment  or mistakes of fact or law,  but nothing in the  Declaration  of Trust
protects a Trustee  against any liability to which he or she would  otherwise be
subject  by reason of  willful  misfeasance,  bad  faith,  gross  negligence  or
reckless disregard of the duties involved in the conduct of his or her office.

Shareholders  are entitled to one vote for each full share held (and  fractional
votes for  fractional  shares) and may vote in the  election of Trustees  and on
other matters submitted to meetings of shareholders. It is not contemplated that
regular annual meetings of  shareholders  will be held. The Declaration of Trust
provides that the Fund's  shareholders  have the right,  upon the declaration in
writing or vote of more than two-thirds of its outstanding  shares,  to remove a
Trustee. The Trustees will call a meeting of shareholders to vote on the removal
of a Trustee upon the written  request of the record  holders of ten per cent of
its shares. In addition, ten shareholders holding the lesser of $25,000 worth or
one percent of Fund shares may advise the  Trustees in writing that they wish to
communicate  with other  shareholders for the purpose of requesting a meeting to
remove a Trustee.  The Trustees will then, if requested by the applicants,  mail
at  the  applicants'   expense  the  applicants'   communication  to  all  other
shareholders.  No amendment may be made to the  Declaration of Trust without the
affirmative vote of the holders of more than 50% of its outstanding shares.

The holders of shares have no  pre-emptive  or  conversion  rights.  Shares when
issued are fully paid and  non-assessable,  except as set forth above.  The Fund
may be terminated upon the sale of its assets to another issuer, if such sale is
approved by the vote of the holders of more than 50% of our outstanding  shares,
or upon liquidation and  distribution of its assets,  if approved by the vote of
the holders of more than 50% of our  outstanding  shares.  If not so terminated,
the Fund will continue indefinitely.

Deloitte & Touche LLP, 50 Fremont Street,  San Francisco,  California  94105 has
been selected as the Fund's independent auditors.

   
     Union Bank of California,  475 Sansome  Street,  San Francisco,  California
94111,  has been  selected as the  custodian of the Fund's  assets.  Shareholder
inquiries should be directed to the Fund.
    


Parnassus Investments, One Market-Steuart Tower #1600, San Francisco, California
94105,  is the Fund's  transfer agent and accounting  agent.  As transfer agent,
Parnassus  Investments  receives  a fee of  $2.10  per  account  per  month.  As
accounting


<PAGE>

agent,  Parnassus  Investments  receives  a fee of $54,000  per year.  Jerome L.
Dodson, the Fund's President, is the sole stockholder of Parnassus Investments.


Parnassus  Investments  may also  arrange for third  parties to provide  certain
services  including  account  maintenance,   recordkeeping  and  other  personal
services to their clients who invest in the Fund. For these  services,  the Fund
may pay Parnassus  Investments an aggregate  service fee at a rate not to exceed
0.25% per annum of the Fund's  average daily net assets.  Parnassus  Investments
will not keep any of this fee for  itself,  but will  instead use the fee to pay
the third party  service  providers.  (Service  providers  who do not maintain a
single,  aggregated  account for their clients will be limited to a fee of 0.10%
per annum paid by the Fund.  Parnassus  Investments,  however,  may elect to pay
such service providers an additional 0.15% from its own funds for a total not to
exceed 0.25% per annum.)



INVESTMENT ADVISER
Parnassus Investments
One Market-Steuart Tower #1600
San Francisco, California 94105


LEGAL COUNSEL
Richard D. Silberman, Esq.
465 California Street #1020
San Francisco, California 94104


AUDITORS
Deloitte & Touche LLP
50 Fremont Street
San Francisco, California 94105

   
CUSTODIAN
Union Bank of California
475 Sansome Street
San Francisco, California 94111
    


DISTRIBUTOR
Parnassus Investments
One Market-Steuart Tower #1600
San Francisco, California 94105


<PAGE>


                               The Parnassus Fund

                                   One Market
                               Steuart Tower #1600
                             San Francisco, CA 94105
                                 (415) 778-0200








              STATEMENT OF ADDITIONAL INFORMATION DATED May 1, 1996




This Statement of Additional Information is not a prospectus.  It should be read
in conjunction with the Fund's prospectus dated May 1, 1996, a copy of which may
be obtained by calling or writing the Fund at the address listed above.






                                TABLE OF CONTENTS

                                                             Cross-reference to
                                           Page              page in prospectus
                                           ----              ------------------

Investment Objective and Policies          B-2                         4
   Investment Restrictions                 B-2                         6
   Repurchase Agreements                   B-3
Management                                 B-4                         7
Performance                                B-4                         14
Net Asset Value                            B-7                         11
Shareholder Services                       B-7                         9
General                                    B-8                         15
Financial Statements                       B-8



<PAGE>

                       Investment Objectives and Policies

   The  investment  objective  of the Fund is to  realize  long-term  growth  of
capital.  Current  income is a secondary  objective.  The Fund's  strategy  with
respect to the composition of its portfolio is described in the prospectus.

Investment Restrictions

   
   The Fund  has  adopted  the  following  restrictions  (in  addition  to those
indicated in the  Prospectus) as  fundamental  policies which may not be changed
without  the  approval  of  the  holders  of a  "majority"  (as  defined  in the
Investment Company Act of 1940) of the Fund's outstanding  shares. A vote of the
holders of a "majority" (as so defined) of the Fund's outstanding shares means a
vote of the  holders  of the lesser of (i) 67% of the  shares  represented  at a
meeting at which more than 50% of the outstanding shares are represented or (ii)
more than 50% of the outstanding shares.
    

The Fund may not:
   (1) With respect to 75% of its total net assets, purchase any security, other
than  obligations  of the U.S.  Government,  its  agencies or  instrumentalities
("U.S. Government  securities"),  if as a result: (i) more than 5% of the Fund's
total net assets  (taken at current  value) would then be invested in securities
of a single  issuer  or (ii) the Fund  would  hold more than 10% of any class of
securities  of an issuer  (taking all common stock issues as a single  class) or
more than 10% of the outstanding voting securities of an issuer.

   (2) Purchase any security if, as a result, the Fund would have 25% or more of
its net assets (at current value) invested in a single industry.

   (3) Purchase  securities  on margin (but the Fund may obtain such  short-term
credits as may be necessary for the clearance of transactions).

   (4) Make short sales of  securities,  purchase  on margin or  purchase  puts,
calls, straddles or spreads.

   (5) Issue senior  securities,  borrow money or pledge its assets  except that
the Fund may borrow from a bank for  temporary or emergency  purposes in amounts
not  exceeding  10% (taken at the lower of cost or  current  value) of its total
assets (not including the amount  borrowed) and pledge its assets to secure such
borrowings.  The Fund will not make additional  purchases  while  borrowings are
outstanding.

   (6) Invest in securities of any issuer if, to the knowledge of the Fund,  any
officer or Trustee of the Fund or officer or director  of the Adviser  owns more
than  one-half  of 1% of the  outstanding  securities  of such  issuer  and such
officers and Trustees who own more than one-half of 1% own in the aggregate more
than 5% of the outstanding securities of such issuer.

   (7)  Buy  or  sell  commodities  or  commodity  contracts  including  futures
contracts or real estate, real estate limited partnerships or other interests in
real estate  although it may purchase and sell  securities  which are secured by
real estate and securities of companies which invest or deal in real estate.

   (8) Act as  underwriter  except to the  extent  that in  connection  with the
disposition of portfolio securities, it may be deemed to be an underwriter under
certain federal securities laws.

   (9) Make  investments  for the purpose of exercising a controlling  influence
over the  management or policies of a company,  except that the Fund may seek to
influence the social policies of the companies it invests in.

   (10) Participate on a joint or joint and several basis in any trading account
in securities.

   (11) Purchase any security restricted as to disposition under federal
securities laws.


                                       B-2
<PAGE>


   (12) Invest in securities of other  registered  investment  companies  except
that the Fund may  invest up to 10% of its assets  (taken at  current  value) in
other funds,  but no more than 5% of its assets in any one fund and the Fund may
not own more than 3% of the outstanding  voting shares of any one fund except as
part of a merger, consolidation or other acquisition.

   (13)  Invest  in  interests  in oil,  gas or  other  mineral  exploration  or
development  programs or in oil,  gas or other  mineral  leases  although it may
invest in the  common  stocks of  companies  which  invest  in or  sponsor  such
programs.

   (14) Make loans except through repurchase agreements or deposits in community
loan funds.

   (15) Purchase foreign securities or currencies.

   (16) Purchase warrants, if as a result, the Fund would then have more than 5%
of its total assets  (taken at current  value)  invested in  warrants.  Included
within that amount,  but not to exceed 2% of the value of the Fund's assets, may
be warrants  which are not listed on the New York Stock Exchange or the American
Stock Exchange.

Repurchase Agreements

   The  Fund  may  purchase  the  following  securities  subject  to  repurchase
agreements: certificates of deposit, certain bankers' acceptances and securities
which are direct  obligations of, or that are fully  guaranteed as to principal,
by the United States or any agency or  instrumentality  of the United States.  A
repurchase  transaction  occurs when at the time the Fund  purchases a security,
the  Fund  also  resells  it to the  vendor  (normally  a  commercial  bank or a
broker-dealer) and must deliver the security (and/or securities  substituted for
them under the repurchase agreement) to the vendor on an agreed-upon date in the
future. Such securities,  including any securities so substituted,  are referred
to as the "Resold Securities". The Adviser will consider the creditworthiness of
any vendor of repurchase  agreements and continuously  monitor the collateral so
that it never falls below the resale price. The resale price is in excess of the
purchase price in that it reflects an agreed-upon market interest rate effective
for the period of time during  which the Fund's  money is invested in the Resold
Securities.  The  majority  of  these  transactions  run from day to day and the
delivery  pursuant to the resale typically will occur within one to five days of
the purchase. The Fund's risk is limited to the ability of the vendor to pay the
agreed-upon sum upon the delivery date.

      If there is a default,  the Resold Securities  constitute security for the
repurchase obligation and will be promptly sold by the Fund. However,  there may
be delays and costs in establishing  the Fund's rights to the collateral and the
value of the collateral may decline.  The Fund will bear the risk of loss in the
event that the other party to the transaction defaults on its obligation and the
Fund is  delayed  or  prevented  from  exercising  its right to  dispose  of the
underlying securities,  including the risk of a possible decline in the value of
the  underlying  securities  during the period in which the Fund seeks to assert
its rights.

     Repurchase  agreements can be considered as loans  "collateralized"  by the
Resold  Securities  (such  agreements being defined as "loans" in the 1940 Act.)
The  return  on  such  "collateral"  may be  more or less  than  that  from  the
repurchase  agreement.  The  Resold  Securities  will be marked to market  every
business  day so that the  value of the  "collateral"  is at least  equal to the
value of the loan  including the accrued  interest  earned  thereon.  All Resold
Securities  will be held by the Fund's  custodian  either  directly or through a
securities depository.



                                       B-3
<PAGE>

                                   MANAGEMENT

The Trustees and Officers of the Fund are as follows:

                                                  Principal Occupation
Name and Address            Position with Fund    During Past Five Years
- ----------------            ------------------    -----------------------


Jerome L. Dodson*           President             President of the Parnassus
One Market                  and Trustee           Fund and President and
Steuart Tower #1600                               Director of Parnassus
San Francisco, CA 94105                           Investments since June of
                                                  1984; President and Trustee of
                                                  Working Assets Money Fund from
                                                  June 1982 until June 1984 and
                                                  Trustee from June 1988 until
                                                  December 1991. President of
                                                  Continental Savings of America
                                                  from 1976 until 1982.


   
Gail L. Horvath             Trustee               Director of New Product 
c/o Just Desserts                                 Development At Just Desserts.
1970 Carroll Avenue
San Francisco, CA  94124                                 
    
                                                  

David L. Gibson             Trustee               Tax Counsel and later,
5840 Geary Boulevard                              Director of Public Affairs for
San Francisco, CA 94118                           the Crown Zellerbach
                                                  Corporation 1973-1984. Since
                                                  1984, attorney in private
                                                  practice.

Richard D. Silberman        Secretary             Attorney specializing in
465 California St. #1020                          business and securities law.
San Francisco, CA 94104                           Private practice.

Howard Fong*                Vice President and    Senior Vice President and
The Parnassus Fund          Treasurer .           Chief Financial Officer of

One Market                                        Continental Savings of America
Steuart Tower #1600                               from 1979 though June of 1988;
San Francisco, CA 94105                           Vice President and Treasurer
                                                  of the Parnassus Fund and of
                                                  Parnassus Investments since
                                                  December of 1988


The Fund  expects to pay each of its  Trustees  who is not  affiliated  with the
Adviser or the Distributor annual fees of $4500 in addition to reimbursement for
certain out-of-pocket expenses. The Trustees and Officers of the Fund as a group
own less than 1% of the Fund's outstanding shares.


*"Interested" Trustee as defined in the 1940 Act.

Performance Advertising


   The Fund's average annual total return  (computed in the manner  described in
the  prospectus) for the one, five and ten year periods ending December 31, 1995
was (2.91%),  21.63% and 11.88%.  These results are based on historical earnings
and  asset  value   fluctuations   and  are  not  intended  to  indicate  future
performance. 


   From  time to time,  the Fund may  quote its  relative  performance  in sales
literature or advertisements in newspapers, magazines or other publications. The
source for these  quotations  will be Lipper  Analytical  Services,  Morningstar
Mutual Fund Values,  Wiesenberger  Investment  Companies,  Schabacker Investment
Management or other  recognized  independent  sources.  We will either quote our
relative performance compared to all funds followed by the independent source or
our relative performance in the growth fund category.

                                       B-4


<PAGE>

The Adviser

   Parnassus Investments acts as the Fund's investment adviser.  Under Parnassus
Investments'  contract with the Fund,  Parnassus  Investments acts as investment
adviser and,  subject to the  supervision of the Board of Trustees,  directs the
investments of the Fund in accordance  with its investment  objective,  policies
and limitations. Parnassus Investments also provides the Fund with all necessary
office facilities and personnel for servicing the Fund's  investments,  and pays
the  salaries  and fees of all  officers  and all  Trustees  of the Fund who are
"interested   persons"  and  all  personnel   performing  research  relating  to
investment  activities.  Parnassus  Investments also provides the management and
administrative  services  necessary  for the  operation  of the  Fund  including
supervising   relations  with  the  custodian,   transfer   agent,   independent
accountants   and   attorneys.   The  Adviser  also  prepares  all   shareholder
communication,  maintains the Fund's records,  registers the Fund's shares under
state and federal laws and does the staff work for the Board of Trustees.

   The  Investment  Advisory  Agreement  provides  that the Adviser shall not be
liable to the Fund for any loss  sustained  by reason of the  purchase,  sale or
retention of any security, whether or not such purchase, sale or retention shall
have been based upon its own  investigation  and research or upon  investigation
and  research  made  by any  other  individual,  firm  or  corporation,  if such
purchase,  sale or  retention  shall have been  selected in good faith.  Nothing
contained  therein shall,  however,  be construed to protect the Adviser against
any  liability  to the  Fund  or its  security  holders  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
Agreement.


   The Fund pays the Adviser a fee for services  performed at the annual rate of
1% of the Fund's  average daily net assets up to $10 million,  then declining to
0.75% of assets above $10 million up to $30 million,  0.70% above $30 million up
to $100  million,  0.65% above $100  million to $200  million,  0.60% above $200
million up to $400  million,  0.55%  above $400  million up to $600  million and
0.50% of the  amount  above  $600  million.  However,  the  Investment  Advisory
Agreement  between  the Fund and the  Adviser  provides  that in the  event  the
expenses of the Fund  (including  the fees of the Adviser  and  amortization  of
organization expenses, but excluding interest,  taxes, brokerage commissions and
extraordinary  expenses) for any fiscal year exceed the limits set by applicable
regulations of state securities commissions,  the Adviser will reduce its fee by
the amount of such excess.  Any such reductions are accrued and paid in the same
manner as the  Adviser's  fee and are subject to  readjustment  during the year.
Currently,  the  Fund  believes  that the most  restrictive  applicable  expense
limitation of state  securities  commissions  is 2.5% of the Fund's  average net
assets up to $30  million,  2.0% of the next $70  million and 1.5% of the amount
above $100  million.  During  1993,  1994 and 1995,  the Fund paid to  Parnassus
Investments  under  the  investment  advisory  contract  the  sums of  $590,906,
$919,073 and $1,582,602 respectively. 

   The  Investment  Advisory  Agreement  provides  that the Adviser shall not be
liable to the Fund for any error of  judgement  by the  Adviser  or for any loss
sustained  by the Fund  except  in the case of a breach of  fiduciary  duty with
respect to the receipt of compensation  for services (in which case any award of
damages will be limited as provided in the 1940 Act) or of willful  misfeasance,
bad faith, gross negligence or reckless disregard of duty.


   As the Fund's underwriter,  Parnassus Investments makes a continuous offering
of the Fund's  shares and receives fees and  commissions  for  distributing  the
Fund's shares. For 1993, 1994 and 1995, Parnassus Investments received $753,198,
$1,021,612 and 1,897,143 respectively of which amounts the following was paid to
other broker/dealers: $113,958 in 1993, $232,100 in 1994 and $564,362 in 1995.


Portfolio Transactions and Brokerage

   The Agreement  states that in  connection  with its duties to arrange for the
purchase and the sale of securities held in the portfolio of the Fund by placing
purchase  and  sale  orders  for  the  Fund,   the  Adviser  shall  select  such
broker-dealers  ("brokers") as shall, in the Adviser's judgement,  implement the
policy of

                                       B-5

<PAGE>

the Fund to achieve "best execution", i.e. prompt and efficient execution at the
most  favorable  securities  price.  In making  such  selection,  the Adviser is
authorized in the Agreement to consider the reliability, integrity and financial
condition of the broker.  The Adviser is also authorized to consider whether the
broker  provides  brokerage  and/or  research  services to the Fund and/or other
accounts of the Adviser.  The Agreement states that the commissions paid to such
brokers may be higher than  another  broker  would have  charged if a good faith
determination  is made by the  Adviser  that the  commission  is  reasonable  in
relation to the  services  provided,  viewed in terms of either that  particular
transaction  or the Adviser's  overall  responsibilities  as to the accounts for
which it  exercises  investment  discretion  and that the Adviser  shall use its
judgement in determining  that the amount of commissions  paid are reasonable in
relation to the value of brokerage and research  services  provided and need not
place or attempt to place a specific  dollar  value on such  services  or on the
portion of commission rates reflecting such services.

   The Agreement provides that to demonstrate that such  determinations  were in
good faith and to show the  overall  reasonableness  of  commissions  paid,  the
Adviser  shall be prepared to show that  commissions  paid were (i) for purposes
contemplated  by this  Agreement;  (ii) not  allocated  or paid for  products or
services which were readily and customarily  available and offered to the public
on a commercial  basis;  and (iii) within a reasonable  range as compared to the
rates  charged by  qualified  brokers to other  institutional  investors as such
rates may become known from available  information.  The Fund  recognizes in the
Agreement that, on any particular  transaction,  a higher than usual  commission
may be paid due to the difficulty of the transaction in question. The Adviser is
also  authorized in the Agreement to consider sales of shares as a factor in the
selection of brokers to execute brokerage and principal transactions, subject to
the requirements of "best execution", as defined above.

   The  research  services  discussed  above may be in  written  form or through
direct  contact with  individuals  and may include  information as to particular
companies and securities as well as market,  economic or institutional areas and
information assisting the Fund in the valuation of its investments. The research
which the Adviser receives for the Fund's brokerage commissions,  whether or not
useful to the Fund may be useful to the Adviser in managing  the accounts of the
Adviser's  other  advisory  clients.  Similarly,  the research  received for the
commissions of such accounts may be useful to the Fund.

   The Adviser may also use brokerage  commissions to reduce certain expenses of
the Fund subject to "best execution." For example, the Adviser may enter into an
agreement to have a brokerage  firm pay part or all of the Fund's  custodian fee
since this  benefits  the Fund's  shareholders.  Similarly,  the Adviser may use
brokerage  commissions  to acquire  computer  software and  hardware  (including
peripherals)  for use with the Fund's transfer agent and fund accounting work if
such use benefits fund shareholders by reducing expenses.  If a certain piece of
equipment  is used for both  Fund  purposes  and for  non-Fund  purposes  by the
Adviser  (e.g.  marketing),  the Adviser  will  allocate  the cost on a pro rata
basis.  Recognizing the inherent  conflicts in such an allocation  process,  the
Adviser will exercise its best judgement in fairly apportioning the costs.

   In the  over-the-counter  market,  securities are generally traded on a "net"
basis with dealers  acting as principal for their own accounts  without a stated
commission  although the price of the security  usually includes a profit to the
dealer.  Money market  instruments  usually  trade on a "net" basis as well.  On
occasion,  certain money market  instruments  may be purchased  directly from an
issuer in which case, no  commissions  or discounts  are paid.  In  underwritten
offerings, securities are purchased at a fixed price which includes an amount of
compensation  to the  underwriter,  generally  referred to as the  underwriter's
concession or discount.


    During 1993,  1994 and 1995,  the Fund paid  $95,741,  $118,545 and $578,760
respectively in brokerage commissions.  Of those amounts, the following was paid
in conjunction  with research  services:  $95,741 in 1993,  $118,545 in 1994 and
$317,075 in 1995.


                                 NET ASSET VALUE

   In determining  the net asset value of the Fund's shares,  common stocks that
are listed on national securities exchanges are valued at the last sale price on
the exchange on which each stock is principally

                                       B-6


<PAGE>

traded as of the close of the New York Stock  Exchange  (which is currently 4:00
pm New York  time) or, in the  absence  of  recorded  sales,  at the  average of
readily  available  closing bid and asked prices on such  exchanges.  Securities
traded on the NASD  National  Market System are also valued at the last recorded
sale price as of 4:00 pm New York time. Other unlisted  securities are valued at
the quoted bid price in the over-the-counter market. Securities and other assets
for which market  quotations are not readily  available are valued at their fair
value as determined in good faith by the Adviser under procedures established by
and under the general  supervision  and  responsibility  of the Fund's  Board of
Trustees. Short-term investments which mature in less than 60 days are valued at
amortized  cost (unless the Board of Trustees  determines  that this method does
not represent fair value) if their  original  maturity was 60 days or less or by
amortizing the value as of the 61st day prior to maturity if their original term
to maturity exceeded 60 days.

                              SHAREHOLDER SERVICES

Statement of Intention

   Reduced  sales  charges are  available to investors  who enter into a written
Statement of Intention  (Letter of Intent)  providing for the purchase  within a
thirteen month period of a specified number of shares of the Fund. All shares of
the Fund previously  purchased and still owned are also included at the then net
asset value in determining the applicable reduction.

   A Statement of Intention  permits a purchaser to establish a total investment
goal to be achieved by any number of investments  over a 13-month  period.  Each
investment  made during the period will  receive  the reduced  sales  commission
applicable  to  the  amount  represented  by the  goal  as if it  were a  single
investment.  Shares  totaling  3.5% of the  dollar  amount of the  Statement  of
Intention  will be held in  escrow  by the  Transfer  Agent  in the  name of the
shareholder. The effective date of a Statement of Intention may be back-dated up
to 90 days in order that investments  made during this 90-day period,  valued at
purchaser's  cost,  can be  applied  to the  fulfillment  of  the  Statement  of
Intention goal.

   The Statement of Intention does not obligate the investor to purchase nor the
Fund to sell the indicated  amount. In the event the Statement of Intention goal
is not achieved within the  thirteen-month  period, the purchaser is required to
pay the  difference  between the sales  commission  otherwise  applicable to the
purchases made during this period and sales charges actually paid. Such payments
may be made directly to the Distributor  or, if not paid, the  Distributor  will
liquidate  sufficient escrowed shares to obtain such difference.  If the goal is
exceeded in an amount  which  qualifies  for a lower sales  commission,  a price
adjustment  is made by  refunding  to the  purchaser  the amount of excess sales
commissions,  if any,  paid during the 13-month  period.  Investors  electing to
purchase  shares  of the  Fund  pursuant  to a  Statement  of  Intention  should
carefully read such Statement of Intention.

Systematic Withdrawal Plan

   A  Systematic  Withdrawal  Plan (the "Plan") is  available  for  shareholders
having  shares  of the Fund  with a  minimum  value of  $10,000  based  upon the
offering price.  The Plan provides for monthly checks in an amount not less than
$100 or quarterly  checks in an amount not less than $200 (which amounts are not
necessarily recommended).

   Dividends and capital gains  distributions  on shares held under the Plan are
invested in additional full and fractional shares at net asset value. Withdrawal
payments  should not be considered as  dividends,  yield or income.  If periodic
withdrawals   continuously   exceed  reinvested   dividends  and  capital  gains
distributions,  the shareholder's  original  investment will be  correspondingly
reduced and ultimately exhausted.

   Furthermore,  each withdrawal constitutes a redemption of shares and any gain
or loss realized must be recognized  for federal  income tax purposes.  Although
the  shareholder  may invest  $10,000 or more in a Systematic  Withdrawal  Plan,
withdrawals  made   concurrently   with  purchases  of  additional   shares  are
inadvisable  because  of  the  sales  charges  applicable  to  the  purchase  of
additional shares.


                                       B-7

<PAGE>

Tax-Sheltered Retirement Plans

   Through  the  Distributor,   retirement   plans  are  available:   Individual
Retirement  Accounts  (IRAs)  and  Simplified  Employee  Pension  Plans  (SEPs).
Adoption  of such plans  should be on advice of legal  counsel  or tax  adviser.
Retirement  accounts  have  a  minimum  initial  investment  of  $500  and  each
subsequent  investment must be at least $50. For further  information  regarding
plan administration,  custodial fees and other details, investors should contact
the Distributor.

                                     GENERAL

   The Fund was organized as a  Massachusetts  business  trust on April 4, 1984.
Its  Declaration of Trust permits the Fund to issue an unlimited  number of full
and fractional shares of beneficial interest and to divide or combine the shares
to  a  greater  or  lesser  number  of  shares  without  thereby   changing  the
proportionate beneficial interest in the Fund. Each share represents an interest
in the  Fund  proportionately  equal  to  the  interest  of  each  other  share.
Certificates   representing   shares  will  not  be  issued.   Upon  the  Fund's
liquidation,  all shareholders  would share pro rata in its net assets available
for  distribution  to  shareholders.  If they deem it advisable  and in the best
interests of shareholders,  the Board of Trustees may create additional  classes
of shares which may differ from each other only as to dividends or each of which
may have  separate  assets and  liabilities  (in which case any such class would
have  a  designation  including  the  word  "Series").   If  additional  classes
designated as "Series"  were created,  shares of each class would be entitled to
vote as a class only to the extent  required  by the  Investment  Company Act of
1940 or as permitted by the  Trustees.  Income and operating  expenses  would be
allocated fairly among the classes, generally on the basis of relative net asset
value.

   The  Declaration  of Trust  contains  an express  disclaimer  of  shareholder
liability  for  its  acts  or  obligations  and  requires  that  notice  of such
disclaimer be given in each agreement,  obligation or instrument entered into or
executed by the Fund or its  Trustees.  The  Declaration  of Trust  provides for
indemnification and reimbursement of expenses out of the Fund's property for any
shareholder held personally liable for its obligations. The Declaration of Trust
also 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 judgement thereon.  Thus, while Massachusetts law permits a shareholder of a
trust  such as this to be held  personally  liable  as a partner  under  certain
circumstances,  the risk of a shareholder incurring financial loss on account of
shareholder liability is highly unlikely and is limited to the relatively remote
circumstances in which the Fund would be unable to meets its obligations.

   The  Declaration  of Trust  further  provides  that the Trustees  will not be
liable for errors of  judgement  or mistakes of fact or law,  but nothing in the
Declaration of Trust protects a Trustee  against any liability to which he would
otherwise  be  subject  by reason  of  willful  misfeasance,  bad  faith,  gross
negligence  or reckless  disregard of the duties  involved in the conduct of his
office.


Financial Statements


   The Fund's Annual Report to Shareholders dated December 31, 1995 is expressly
incorporated  by  reference  and  made a part of this  Statement  of  Additional
Information.  A copy of the Annual  Report  which  contains  the Fund's  audited
financial  statements for the year ending December 31, 1995 may be obtained free
of charge by writing or calling the Fund. 







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