PROFUNDS
485APOS, 2000-07-13
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      As Filed with the Securities and Exchange Commission on July 13, 2000

                     Registration Nos. 333-28339; 811-08239

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933                    [X]

         Pre-Effective Amendment No.                                       [ ]
         Post-Effective Amendment No. 14                                   [X]

                                     and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940            [X]
         Amendment No. 17                                                  [X]


                                    ProFunds
               (Exact Name of Registrant as Specified in Charter)

                        7900 Wisconsin Avenue, Suite 300
                            Bethesda, Maryland 20814
               (Address of Principal Executive Offices) (Zip Code)

       Registrant's Telephone Number, including Area Code: (301) 657-1970

         Michael L. Sapir                                  With copy to:
         Chairman                                          William J. Tomko
         PROFUND Advisors LLC                              President
         7900 Wisconsin Avenue, Suite 300                  BISYS Fund Services
         Bethesda, Maryland 20814                          3435 Stelzer Road
                                                           Columbus, Ohio 43219

                 (Name and Address of Agent for Service Process)

Approximate  Date  of  Commencement  of  the  Proposed  Public  Offering  of the
Securities:

It is proposed that this filing will become effective:

______  immediately upon filing pursuant to paragraph (b)

______  on (date) pursuant to paragraph (b)

______  60 days after filing pursuant to paragraph (a)(1)

______  on (date) pursuant to paragraph (a)(1)

_X____  75 days after filing pursuant to paragraph (a)(2)

______  on (date) pursuant to paragraph (a)(2) of rule 485.

If appropriate, check the following:

______ This  post-effective  amendment  designates  a new  effective  date for a
previously filed post- effective amendment.



<PAGE>



                                EXPLANATORY NOTE

         This Post-Effective  Amendment No. 14 to the Registrant's  Registration
Statement on Form N-1A is filed for the purpose of adding  disclosure  regarding
four new series of the Registrant.  Accordingly,  this filing does not relate to
the  existing  series  of  the   Registrant,   disclosure  of  which  is  hereby
incorporated  by reference from the following  documents  (File Nos.  333-28339,
811-08239):  (1) the prospectus and statement of additional information relating
to the 10  "Benchmark"  ProFunds  and  the  Money  Market  ProFund  included  in
Post-Effective  Amendment No. 13 to the Registrant's  Registration  Statement on
Form N-1A,  filed  pursuant to Rule 485(b) under the  Securities Act of 1933, on
May 1, 2000; (2) the two prospectuses  and statements of additional  information
relating to the 11 "VP" ProFunds included in Post-Effective  Amendment No. 13 to
the  Registrant's  Registration  Statement on Form N-1A,  filed pursuant to Rule
485(b) under the  Securities Act of 1933, on May 1, 2000; (3) the prospectus and
statement  of  additional  information  relating to the OTC ProFund  included in
Post-Effective  Amendment No. 11 to the Registrant's  Registration  Statement on
Form N-1A, filed pursuant to Rule 485(a)(2) under the Securities Act of 1933, on
March 13, 2000;  and (4) the  definitive  prospectus and statement of additional
information relating to the 17 "UltraSector" ProFunds filed pursuant to Rule 497
under the  Securities Act of 1933, on June 19, 2000 for the  prospectus,  and on
June 21, 2000 for the Statement of Additional Information.




<PAGE>



                                                            [         ], 2000

                                                            PROSPECTUS

ProFunds Mutual Funds


The UltraSector ProFunds

 .   Airline UltraSector ProFund
 .   Banking UltraSector ProFund
 .   Entertainment and Leisure UltraSector ProFund
 .   Oilfield Equipment and Services UltraSector ProFund



[Logo]



Like shares of all mutual  funds,  these  securities  have not been  approved or
disapproved by the Securities  and Exchange  Commission,  nor has the Securities
and Exchange Commission passed upon the accuracy or adequacy of this prospectus.
Any representation to the contrary is a criminal offense.




<PAGE>




                               [Table of Contents]






<PAGE>



                                    OVERVIEW


THE ULTRASECTOR PROFUNDS' INVESTMENT OBJECTIVES

            Each UltraSector  ProFund seeks to provide daily investment results,
before  fees and  expenses,  that  correspond  to 150% of the  performance  of a
specified Dow Jones sector index.

PRINCIPAL INVESTMENT STRATEGIES

            ProFund Advisors LLC (the "Advisor"), the investment advisor of each
UltraSector  ProFund,   uses  a  "passive"  approach  to  investing,   employing
quantitative analysis. On the basis of this analysis, the Advisor determines the
type,  quantity and mix of  investment  positions  that an  UltraSector  ProFund
should hold to approximate the performance of its benchmark (150% of a specified
Dow  Jones  sector  index).  The  Advisor  does not  make  judgments  about  the
investment  merit of a  particular  stock,  nor  does it  attempt  to apply  any
economic,  financial or market  analysis.  The UltraSector  ProFunds do not take
temporary defensive positions.

            Under normal market conditions, each UltraSector ProFund will invest
primarily in equity securities of companies  principally engaged in the business
activities  of an indicated  economic  sector,  or in  instruments  that provide
exposure to those  companies.  An UltraSector  ProFund will invest in securities
and other instruments that the Advisor believes should have a similar investment
profile as, and simulate the movement of, the underlying  index. The UltraSector
ProFunds  may invest in  securities  that are not  included in their  underlying
indices if the  Advisor  decides it is  appropriate  in view of the  UltraSector
ProFunds' investment objectives.

            Each UltraSector ProFund may invest in the following  instruments as
a substitute for investing directly in stocks, as a means of achieving leverage,
or as a way of pursuing its investment objective:

          .    Futures  contracts  on  stock  indexes,  and  options  on  future
               contracts; and

          .    Financial  instruments  such as equity caps,  collars and floors,
               swaps,  American Depository  Receipts,  and options on securities
               and securities indices.

            Each  UltraSector  ProFund  generally  invests as described above in
order to produce  "leveraged"  investment  results.  Leverage is a way to change
small  market  movements  into  larger  changes  in the value of an  UltraSector
ProFund's  investment.   An  UltraSector  ProFund  also  may  borrow  money  for
investment purposes in order to achieve leveraged investment results.

            Each  UltraSector   ProFund  may  also  invest  in  U.S.  Government
securities and enter into repurchase agreements.
<PAGE>

PRINCIPAL RISKS OF INVESTING IN THE ULTRASECTOR PROFUNDS

            Like all  investments,  the  UltraSector  ProFunds  entail risk. The
Advisor  cannot  guarantee  that  any  UltraSector   ProFund  will  achieve  its
investment  objective.  As with any mutual fund, the UltraSector  ProFunds could
lose  money,  or  their   performance  could  trail  that  of  other  investment
alternatives.  Some of the  risks  that are  common  to each of the  UltraSector
ProFunds are:

          .    Market  Risk -- The  UltraSector  ProFunds  are subject to market
               risks  that  will  affect  the value of their  shares,  including
               general economic and market  conditions,  as well as developments
               that impact specific economic  sectors,  industries or companies.
               Shareholders  should lose money when the index  underlying  their
               benchmark declines.

          .    Equity Risk -- The equity markets are volatile,  and the value of
               an  UltraSector  ProFund's  securities  and  futures  and options
               contracts  may  fluctuate  dramatically  from  day-to-day.   This
               volatility  may  cause  the  value  of  your   investment  in  an
               UltraSector ProFund to decrease. The risk of equity investing may
               be particularly acute when an UltraSector  ProFund invests in the
               securities  of issuers  with small market  capitalization.  Small
               capitalization  companies  may lack the  financial  and personnel
               resources  to handle  economic  setbacks,  and  their  securities
               typically are less liquid than larger companies' stock.

          .    Concentration  Risk -- Since each UltraSector  ProFund invests in
               the securities of a limited number of issuers conducting business
               in a specific market sector, it is subject to the risk that those
               issuers (or that market  sector)  will  perform  poorly,  and the
               UltraSector  ProFund  will be  negatively  impacted  by that poor
               performance.

          .    Leverage  Risk  --  The  UltraSector  ProFunds  employ  leveraged
               investment   techniques  and  may  borrow  money  for  investment
               purposes.  Leverage  is the  ability to get a return on a capital
               base that is larger than an UltraSector ProFund's investment. Use
               of  leverage  can  magnify the effects of changes in the value of
               the  UltraSector  ProFunds  and  makes  them more  volatile.  The
               leveraged  investment  techniques that the  UltraSector  ProFunds
               employ subject  investors in the UltraSector  ProFunds to one and
               one-half times the potential risk of loss of a conventional index
               fund that seeks to track the performance of an underlying index.

          .    Correlation  Risk  --  The  Advisor  expects  that  each  of  the
               UltraSector  ProFunds will track its benchmark  with a high level
               of  correlation.  There can be,  however,  no guarantee  that the
               UltraSector  ProFunds  will be able to  achieve  a high  level of
               correlation.  Investment by an UltraSector  ProFund in securities
               not  included  in its  underlying  index  or in  other  financial
               instruments  may  adversely   affect  an  UltraSector   ProFund's
               correlation  with its  benchmark.  A  failure  to  achieve a high
               degree of  correlation  may prevent an  UltraSector  ProFund from
               achieving its investment goal.

          .    Risks of  Aggressive  Investment  Techniques  -- The  UltraSector
               ProFunds  use  investment   techniques  that  may  be  considered
               aggressive.  Risks  associated  with the use of options,  futures
               contracts,   swaps  and  options  on  futures  contracts  include
               potentially  dramatic price changes  (losses) in the value of the
               instruments and imperfect  correlations  between the price of the
               contract and the underlying security or index.
<PAGE>

          .    Liquidity Risk -- In certain circumstances, such as disruption of
               the  orderly  markets  for  financial  instruments  in which  the
               UltraSector  ProFunds invest, the UltraSector  ProFunds might not
               be able to dispose of certain  holdings quickly or at prices that
               represent true market value in the judgment of the Advisor.  This
               may prevent the  UltraSector  ProFunds  from  limiting  losses or
               realizing gains.

          .    Non-Diversification   Risk   --The   UltraSector   ProFunds   are
               classified  as  "non-diversified"  under the  federal  securities
               laws.  They have the ability to  concentrate  a  relatively  high
               percentage  of their  investments  in the  securities  of a small
               number of companies,  if the Advisor  determines that doing so is
               the most efficient means of tracking the relevant benchmark. This
               would  make  the  performance  of  an  UltraSector  ProFund  more
               susceptible to a single  economic,  political or regulatory event
               than a more diversified mutual fund might be.

          .    New Fund Risk -- There can be no assurances  that an  UltraSector
               ProFund will grow to an  economically  viable size, in which case
               management may determine to liquidate the UltraSector  ProFund at
               a time that may not be opportune for shareholders.

            The   investment   objective   of  each   UltraSector   ProFund   is
non-fundamental and may be changed without shareholder approval. There can be no
assurance that an UltraSector ProFund will achieve its investment objective.

            The UltraSector ProFunds:

            .   Are not federally insured
            .   Are not guaranteed by any government agency
            .   Are not bank deposits
            .   Are not guaranteed to achieve their objectives




<PAGE>





                 FUND INFORMATION - AIRLINE ULTRASECTOR PROFUND

FUND STRATEGY

          The Airline UltraSector ProFund seeks daily investment results, before
fees and expenses,  that  correspond to 150% of the performance of the Dow Jones
U.S. [Airline] Sector Index.

          The Index  measures  the  performance  of the  portion of the  airline
industry  which is listed in the U.S.  equity  market.  Component  companies are
involved  in  [__________],   [__________],   and   [__________].   The  Airline
UltraSector  ProFund  primarily  invests in airline  companies or in instruments
that provide exposure to these companies.

          As of March 31, 2000,  the Index  consisted  of [ ] stocks.  Its three
largest stocks were [______];  [__________];  and [__________]  (which comprised
[_____%], [_____%], and [_____%],  respectively,  of its market capitalization).
The Airline UltraSector ProFund will concentrate its investments in a particular
industry or group of industries to approximately the same extent the Index is so
concentrated.  As of March 31, 2000, the Index was concentrated in [__________],
which comprised [_____%] of its market  capitalization (based on the composition
of the Index).

RISK CONSIDERATIONS

          In addition to the risks discussed in the Overview for all UltraSector
ProFunds, the Airline UltraSector ProFund is subject to the following risks:

          .    Companies in this sector could be adversely affected by commodity
               price   volatility,   exchange   rates,   foreign  market  access
               restrictions, and increased competition.

          .    The prices of the  securities of airline  companies may fluctuate
               widely due to their cyclical nature, economic trends, and changes
               in disposable consumer income.

          .    Airline companies are subject to regulations by, and restrictions
               of, the Federal  Aviation  Authority,  [federal,  state and local
               governments], and foreign regulatory authorities.

          .    The  profitability  of  companies  in this  sector is  related to
               worldwide fuel prices, labor agreements, and insurance costs.

          .    Airline companies face intense competition, both domestically and
               internationally.  Many foreign airline  companies,  many of which
               are  partially  funded  by  foreign  governments,   may  be  less
               sensitive to short-term economic pressures.

          .    The stocks in the Index may underperform fixed income investments
               and stock market indices that track other  markets,  segments and
               sectors.

<PAGE>

FUND PERFORMANCE

          Because the  Airline  UltraSector  ProFund is newly  formed and has no
investment  track record,  it has no performance to compare against other mutual
funds or broad measures of securities market performance, such as indexes.

FEES AND EXPENSES OF THE FUND

          The table below  describes the estimated fees and expenses you may pay
if you buy and hold shares of the Airline  UltraSector  ProFund during its first
year of operations.  The Airline UltraSector ProFund is a "no-load" mutual fund.
You pay no sales  charge  when  you buy or sell  shares,  or when  you  reinvest
dividends.

Shareholder Fees - Investor Class Shares and Service Class Shares
(paid directly from your investment)

Wire Redemption Fee*                $15

*This charge may be waived at the discretion of ProFunds.

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

                                            Investor         Service
                                            Class            Class
                                            --------         -------

Management Fees                             0.75%             0.75%
Service Fees                                None              1.00%*
Other Expenses                              0.60%             0.60%
                                            -----             -----
Total Annual ProFund Operating Expenses     1.35%             2.35%
--------------
* ProFunds  has  adopted a  Shareholder  Services  Plan  pursuant  to which each
UltraSector  ProFund  may pay fees of up to 1.00% of the net asset  value of its
Service Class shares to financial  intermediaries that agree to provide services
to customers holding Service Class shares. For additional information concerning
the terms of the Shareholder  Services Plan and related service  agreements with
financial  intermediaries,  see "Share  Prices,  Classes and Tax  Information --
Classes of Shares."

<PAGE>

EXAMPLE

          The following example illustrates the expenses you would have incurred
on a $10,000 investment in the Airline UltraSector  ProFund,  and is intended to
help you  compare  the cost of  investing  in the  Airline  UltraSector  ProFund
compared to other mutual funds. The example assumes that you invest for the time
periods shown and redeem all of your shares at the end of each period,  that the
Airline UltraSector ProFund earns an annual return of 5% over the periods shown,
that you reinvest all  dividends  and  distributions,  and that gross  operating
expenses  remain  constant.   Because  this  example  is  hypothetical  and  for
comparison only, your actual costs will be different.

                           1 YEAR   3 YEARS
                           ----------------
Investor Class             $137      $428
Service Class              $238      $733


<PAGE>


                 FUND INFORMATION -- BANKING ULTRASECTOR PROFUND

FUND STRATEGY

          The Banking UltraSector ProFund seeks daily investment results, before
fees and expenses,  that  correspond to 150% of the performance of the Dow Jones
U.S. Banking Sector Index.

          The Index measures the  performance of the banking  economic sector of
the U.S. equity market. Component companies include [_________________________].
The Banking  UltraSector  ProFund  primarily  invests in banking companies or in
instruments that provide exposure to these companies.

          As of March 31, 2000,  the Index  consisted  of [ ] stocks.  Its three
largest stocks were [____________________]  (which comprised [_____%], [_____%],
and  [_____%],   respectively,  of  its  market  capitalization).   The  Banking
UltraSector Profund will concentrate its investments in a particular industry or
group  of  industries  to  approximately   the  same  extent  the  Index  is  so
concentrated.  As of March 31, 2000, the Index was concentrated in [__________],
which   comprised   [_____%]   and   [_____%],   respectively,   of  its  market
capitalization (based on the composition of the Index).

RISK CONSIDERATIONS

          In addition to the risks discussed in the Overview for all UltraSector
ProFunds, the Banking UltraSector ProFund is subject to the following risks:

          .    Companies  in this sector are subject to  extensive  governmental
               regulation that affects the scope of their activities, the prices
               they can charge and the amount of capital they must maintain.

          .    The  profitability  of  companies  in this  sector  is  adversely
               affected by increases in interest rates.

          .    The  profitability  of  companies  in this  sector  is  adversely
               affected  by loan  losses,  which  usually  increase  in economic
               downturns.

          .    Banks may be subject to severe price competition.

          .    Newly   enacted   laws  are   expected  to  result  in  increased
               inter-industry  consolidation  and  competition  in  the  banking
               sector.

          .    The stocks in the Index may underperform fixed income investments
               and stock market indices that track other  markets,  segments and
               sectors.





<PAGE>

FUND PERFORMANCE

          Because the  Banking  UltraSector  ProFund is newly  formed and has no
investment  track record,  it has no performance to compare against other mutual
funds or broad measures of securities market performance, such as indexes.

FEES AND EXPENSES OF THE FUND

          The table below  describes the estimated fees and expenses you may pay
if you buy and hold shares of the Banking  UltraSector  ProFund during its first
year of operations.  The Banking UltraSector ProFund is a "no-load" mutual fund.
You pay no sales  charge  when  you buy or sell  shares,  or when  you  reinvest
dividends.

Shareholder Fees - Investor Class Shares and Service Class Shares
(paid directly from your investment)

Wire Redemption Fee*         $15

*This charge may be waived at the discretion of ProFunds.

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

                                           Investor         Service
                                           Class            Class

Management Fees                            0.75%            0.75%
Service Fees                               None             1.00%*
Other Expenses                             0.60%            0.60%
                                           -----            -----
Total Annual ProFund Operating Expenses    1.35%            2.35%
-------------------
* ProFunds  has  adopted a  Shareholder  Services  Plan  pursuant  to which each
UltraSector  ProFund  may pay fees of up to 1.00% of the net asset  value of its
Service Class shares to Banking intermediaries that agree to provide services to
customers holding Service Class shares.  For additional  information  concerning
the terms of the Shareholder  Services Plan and related service  agreements with
Banking  intermediaries,  see "Share  Prices,  Classes  and Tax  Information  --
Classes of Shares."

<PAGE>


EXAMPLE

          The following example illustrates the expenses you would have incurred
on a $10,000 investment in the Banking UltraSector  ProFund,  and is intended to
help you  compare  the cost of  investing  in the  Banking  UltraSector  ProFund
compared to other mutual funds. The example assumes that you invest for the time
periods shown and redeem all of your shares at the end of each period,  that the
Banking UltraSector ProFund earns an annual return of 5% over the periods shown,
that you reinvest all  dividends  and  distributions,  and that gross  operating
expenses  remain  constant.   Because  this  example  is  hypothetical  and  for
comparison only, your actual costs will be different.

                                    1 YEAR    3 YEARS
                                    ------------------
Investor Class                      $137       $428
Service Class                       $238       $733


<PAGE>




                      FUND INFORMATION -- ENTERTAINMENT AND
                           LEISURE ULTRASECTOR PROFUND

FUND STRATEGY

          The  Entertainment  and  Leisure   UltraSector   ProFund  seeks  daily
investment  results,  before fees and expenses,  that  correspond to 150% of the
performance of the Dow Jones U.S. Entertainment and Leisure Sector Index.

          The Index measures the performance of the entertainment  sector of the
U.S. equity market. Component companies include [__________],  [__________]. The
Entertainment and Leisure UltraSector ProFund primarily invests in entertainment
companies or in instruments that provide exposure to these companies.

          As of March 31, 2000,  the Index  consisted  of [ ] stocks.  Its three
largest  stocks  were  [__________],   [__________],   and  [__________]  (which
comprised  [_____%],  [_____%],  and  [_____%],   respectively,  of  its  market
capitalization).

RISK CONSIDERATIONS

          In  addition  to the  risks  discussed  in the  Overview  for  all the
UltraSector  ProFunds,  the  Entertainment  and Leisure  UltraSector  ProFund is
subject to the following risks:

          .    The success of the  entertainment  [industry]  is tied closely to
               the performance of the domestic and  international  economy,  and
               competition.

          .    Companies in this sector are increasingly  affected by government
               regulation.

          .    The  success  of  companies  in this  sector  depends  heavily on
               disposable household income and consumer spending.

          .    Companies in this sector are subject to severe competition.

          .    Changes  in  demographics  and  consumer  tastes  can  affect the
               success of companies in the entertainment industry.

          .    Companies   in  this   sector   are   subject  to  risks  of  new
               technologies.

          .    The stocks in the Index may underperform fixed income investments
               and stock market indices that track other  markets,  segments and
               sectors.

FUND PERFORMANCE

          Because the  Entertainment  and Leisure  UltraSector  ProFund is newly
formed and has no investment  track  record,  it has no  performance  to compare
against other mutual funds or broad measures of securities  market  performance,
such as indexes.

<PAGE>

FEES AND EXPENSES OF THE FUND

          The table below  describes the estimated fees and expenses you may pay
if you buy and hold shares of the Entertainment and Leisure  UltraSector ProFund
during its first year of operations.  The Entertainment and Leisure  UltraSector
ProFund is a "no-load" mutual fund. You pay no sales charge when you buy or sell
shares, or when you reinvest dividends.

Shareholder Fees - Investor Class Shares and Service Class Shares
(paid directly from your investment)

Wire Redemption Fee*       $15

*This charge may be waived at the discretion of ProFunds.

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

                                              Investor         Service
                                              Class            Class

Management Fees                               0.75%            0.75%
Service Fees                                  None             1.00%*
Other Expenses                                0.60%            0.60%
                                              -----            -----
Total Annual ProFund Operating Expenses       1.35%            2.35%
-------------------
* ProFunds  has  adopted a  Shareholder  Services  Plan  pursuant  to which each
UltraSector  ProFund  may pay fees of up to 1.00% of the net asset  value of its
Service Class shares to financial  intermediaries that agree to provide services
to customers holding Service Class shares. For additional information concerning
the terms of the Shareholder  Services Plan and related service  agreements with
financial  intermediaries,  see "Share  Prices,  Classes and Tax  Information --
Classes of Shares."

EXAMPLE

           The  following  example  illustrates  the  expenses  you  would  have
incurred on a $10,000  investment in the Entertainment  and Leisure  UltraSector
ProFund,  and is  intended  to help you  compare  the cost of  investing  in the
Entertainment  and Leisure  UltraSector  ProFund compared to other mutual funds.
The example assumes that you invest for the time periods shown and redeem all of
your  shares  at the end of each  period,  that the  Entertainment  and  Leisure
UltraSector  ProFund earns an annual return of 5% over the periods  shown,  that
you reinvest all dividends and distributions,  and that gross operating expenses
remain  constant.  Because this example is hypothetical and for comparison only,
your actual costs will be different.

                                    1 YEAR  3 YEARS
                                    ----------------
Investor Class                      $137     $428
Service Class                       $238     $733

<PAGE>




               FUND INFORMATION -- OILFIELD EQUIPMENT AND SERVICES
                               ULTRASECTOR PROFUND

FUND STRATEGY

          The Oilfield  Equipment and Services  UltraSector  ProFund seeks daily
investment  results,  before fees and expenses,  that  correspond to 150% of the
performance of the Dow Jones U.S. Oilfield Equipment and Services Sector Index.

          The Index  measures  the  performance  of the oilfield  equipment  and
services  sector  of  the  U.S.  equity  market.   Component  companies  include
[_________________________].  The Oilfield  Equipment  and Services  UltraSector
ProFund  primarily  invests  in  oil  equipment  and  service  companies  or  in
instruments that provide exposure to these companies.

          As of March 31, 2000,  the Index  consisted  of [ ] stocks.  Its three
largest  stocks  were  [__________],   [__________],   and  [__________]  (which
comprised  [_____%],  [_____%],  and  [_____%],   respectively,  of  its  market
capitalization).  The Oilfield Equipment and Services  UltraSector  ProFund will
concentrate its  investments in a particular  industry or group of industries to
approximately  the same  extent  the Index is so  concentrated.  As of March 31,
2000, the Index was  concentrated in [_____],  which  comprised  [_____%] of its
market capitalization (based on the composition of the Index).

RISK CONSIDERATIONS

          In addition to the risks discussed in the Overview for all UltraSector
ProFunds,  the Oilfield Equipment and Services UltraSector ProFund is subject to
the following risks:

          .    The  profitability  of  companies  in this  sector is  related to
               worldwide oil exploration and production spending.

          .    Companies in this sector  could be adversely  affected by changes
               in currency exchange rates.

          .    Companies in this sector are affected by government environmental
               regulations,  world  events  and  economic  conditions,  and  are
               subject to market,  economic and political risks of the countries
               where oil companies are located or do business.

          .    Low consumer demand,  warmer winters,  and energy  efficiency may
               lower demand for oil-related products.

          .    Companies  in this  sector are at risk for  environmental  damage
               claims.

          .    The stocks in the Index may underperform fixed income investments
               and stock market indices that track other  markets,  segments and
               sectors.
<PAGE>

FUND PERFORMANCE

          Because the Oilfield  Equipment  and Services  UltraSector  ProFund is
newly  formed and has no  investment  track  record,  it has no  performance  to
compare  against  other  mutual  funds or broad  measures of  securities  market
performance, such as indexes.

FEES AND EXPENSES OF THE FUND

          The table below  describes the estimated fees and expenses you may pay
if you buy and hold shares of the Oilfield  Equipment  and Services  UltraSector
ProFund during its first year of operations. The Oilfield Equipment and Services
UltraSector ProFund is a "no-load" mutual fund. You pay no sales charge when you
buy or sell shares, or when you reinvest dividends.

Shareholder Fees - Investor Class Shares and Service Class Shares
(paid directly from your investment)

Wire Redemption Fee*    $15

*This charge may be waived at the discretion of the ProFunds.

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

                                          Investor         Service
                                          Class            Class

Management Fees                           0.75%            0.75%
Service Fees                              None             1.00%*
Other Expenses                            0.60%            0.60%
                                          -----            -----
Total Annual ProFund Operating Expenses   1.35%            2.35%
-------------------
* ProFunds  has  adopted a  Shareholder  Services  Plan  pursuant  to which each
UltraSector  ProFund  may pay fees of up to 1.00% of the net asset  value of its
Service Class shares to financial  intermediaries that agree to provide services
to customers holding Service Class shares. For additional information concerning
the terms of the Shareholder  Services Plan and related service  agreements with
financial  intermediaries,  see "Share  Prices,  Classes and Tax  Information --
Classes of Shares."

<PAGE>


EXAMPLE

          The following example illustrates the expenses you would have incurred
on a $10,000  investment  in the Oilfield  Equipment  and  Services  UltraSector
ProFund,  and is  intended  to help you  compare  the cost of  investing  in the
Oilfield  Equipment and Services  UltraSector  ProFund  compared to other mutual
funds. The example assumes that you invest for the time periods shown and redeem
all of your shares at the end of each period,  that the Oilfield  Equipment  and
Services  UltraSector  ProFund  earns an annual  return  of 5% over the  periods
shown,  that you  reinvest  all  dividends  and  distributions,  and that  gross
operating expenses remain constant. Because this example is hypothetical and for
comparison only, your actual costs will be different.

                           1 YEAR       3 YEARS
                           -----------------------
Investor Class             $137         $428
Service Class              $238         $733

<PAGE>



                          ULTRASECTOR PROFUNDS STRATEGY

What the UltraSector ProFunds Do

Each UltraSector ProFund:

     .    Seeks to provide its shareholders with predictable  investment returns
          approximating  its  benchmark  by investing  in  securities  and other
          financial instruments, such as futures and options on futures.

     .    Uses a mathematical and quantitative approach.

     .    Pursues  its  objective  regardless  of market  conditions,  trends or
          direction.

     .    Seeks to provide correlation with its benchmark on a daily basis.

What the UltraSector ProFunds Do Not Do

The Advisor does not:

     .    Conduct  conventional  stock  research or  analysis or forecast  stock
          market movement in managing the UltraSector ProFunds' assets.

     .    Invest the UltraSector ProFunds' assets in stocks or instruments based
          on the  Advisor's  view of the  fundamental  prospects  of  particular
          companies.

     .    Adopt defensive positions by investing in cash or other instruments in
          anticipation of an adverse climate for their benchmark indexes.

     .    Seek to  invest  to  realize  dividend  income  from  the  UltraSector
          ProFunds' investments.

     .    Seek to provide correlation with the UltraSector  ProFunds' benchmarks
          over a period of time other than daily,  such as monthly or  annually,
          since mathematical  compounding prevents the UltraSector ProFunds from
          achieving such results.

Important Concepts

     .    Leverage offers a means of magnifying  small market  movements,  up or
          down, into large changes in an investment's value.

     .    Futures, or futures contracts,  are contracts to pay a fixed price for
          an agreed-upon amount of commodities or securities,  or the cash value
          of the commodity or securities, on an agreed-upon date.
<PAGE>

     .    Option contracts grant one party a right,  for a price,  either to buy
          or sell a  security  or  futures  contract  at a fixed  sum  during  a
          specified  period  or on a  specified  day,  or to  receive  cash upon
          exercise of the option (in the case of an index option).

     .    American Depository Receipts represent the right to receive securities
          of foreign issuers  deposited in a bank or trust company.  ADRs are an
          alternative to purchasing the underlying  securities in their national
          markets and currencies. Investment in ADRs has certain advantages over
          direct investment in the underlying foreign securities since: (i) ADRs
          are U.S.  dollar-denominated  investments that are easily transferable
          and for  which  market  quotations  are  readily  available,  and (ii)
          issuers whose securities are represented by ADRs are generally subject
          to auditing,  accounting and financial  reporting standards similar to
          those applied to domestic issuers.

Portfolio Turnover

          The Advisor expects a significant portion of the UltraSector ProFunds'
assets  to come from  professional  money  managers  and  investors  who use the
UltraSector  ProFunds as part of "market timing"  investment  strategies.  These
strategies often call for frequent trading of UltraSector ProFund shares to take
advantage  of  anticipated  changes in market  conditions.  Although the Advisor
believes  its  accounting   methodology   should  minimize  the  effect  on  the
UltraSector  ProFunds of such trading,  market timing trading could increase the
rate  of  UltraSector  ProFunds'  portfolio  turnover,  forcing  realization  of
substantial  capital gains and losses and increasing  transaction  expenses.  In
addition,  while the  UltraSector  ProFunds do not expect it, large movements of
assets into and out of the  UltraSector  ProFunds  may  negatively  impact their
abilities to achieve  their  investment  objectives  or their level of operating
expenses.

                    SHARE PRICES, CLASSES AND TAX INFORMATION

Calculating the UltraSector ProFunds' Share Prices

          Each UltraSector ProFund calculates daily share prices on the basis of
the net asset  value of each class of shares at the close of regular  trading on
the New York Stock Exchange ("NYSE")  (normally,  4:00 p.m., Eastern time) every
day the NYSE and the Chicago Mercantile Exchange are open for business.

          Purchases  and  redemptions  of shares are  effected  at the net asset
value per share next  determined  after receipt and  acceptance of an order.  If
portfolio  investments of an  UltraSector  ProFund are traded in markets on days
when the  UltraSector  ProFund's  principal  trading  markets  are  closed,  the
UltraSector  ProFund's  net asset value may vary on days when  investors  cannot
purchase or redeem shares.
<PAGE>

          The  UltraSector  ProFunds  value  shares  of each  class of shares by
dividing the market  value of the assets  attributable  to each class,  less the
liabilities  attributable to the class, by the number of the class's outstanding
shares.  The UltraSector  ProFunds use the following methods for arriving at the
current market price of investments held by the UltraSector ProFunds:

     .    securities  listed and traded on  exchanges--the  last price the stock
          traded at on a given day, or if there were no sales,  the mean between
          the closing bid and asked prices.

     .    securities traded over-the-counter--NASDAQ-supplied information on the
          prevailing bid and asked prices.

     .    futures contracts and options on indexes and securities--the last sale
          price prior to the close of regular trading on the NYSE.

     .    options on futures  contracts--priced  at fair value  determined  with
          reference to established future exchanges.

     .    bonds and  convertible  bonds generally are valued using a third-party
          pricing system.

     .    short-term  debt  securities  are  valued  at  amortized  cost,  which
          approximates market value.

     .    foreign exchange values used to calculate net asset values will be the
          mean of the bid price and the asked price for the  respective  foreign
          currency occurring immediately before the NYSE closes.

          When price  quotes are not  readily  available,  securities  and other
assets are valued at fair value in good faith under  procedures  established by,
and under the general  supervision and responsibility of, the Board of Trustees.
This procedure  incurs the unavoidable  risk that the valuation may be higher or
lower than the securities  might actually  command if the  UltraSector  ProFunds
sold  them.  In the  event  that a  trading  halt  closes  the NYSE or a futures
exchange  early,  portfolio  investments  may be valued at fair  value,  or in a
manner  that is  different  from the  discussion  above.  See the  Statement  of
Additional Information for more details.

          The New York Stock  Exchange and the Chicago  Mercantile  Exchange,  a
leading  market for futures and  options,  are open every week,  Monday  through
Friday,  except when the  following  holidays  are  celebrated:  New Year's Day,
Martin Luther King, Jr. Day (the third Monday in January),  Presidents' Day (the
third Monday in February),  Good Friday,  Memorial Day (the last Monday in May),
July 4th,  Labor Day (the  first  Monday in  September),  Thanksgiving  Day (the
fourth  Thursday  in  November)  and  Christmas  Day.  Either  or both of  these
Exchanges  may close early on the  business  day before each of these  holidays.
Either  or both of  these  Exchanges  also  may  close  early  on the day  after
Thanksgiving Day and the day before Christmas holiday.

Dividends and Distributions

          Each  of  the  UltraSector  ProFunds  intends  to  distribute  to  its
shareholders  every year all of the year's net investment income and net capital
gains. Each UltraSector  ProFund will reinvest these distributions in additional
shares unless a shareholder has written to request a direct cash distribution.



<PAGE>


Tax Consequences

          An  UltraSector  ProFund does not ordinarily pay income tax on its net
investment  income (which  includes  short-term  capital  gains) and net capital
gains that it distributes to shareholders,  but individual  shareholders pay tax
on the dividends and distributions they receive.  Shareholders will generally be
taxed  regardless  of how long they have held  UltraSector  ProFund  shares  and
regardless of whether  distributions and dividends are reinvested or they choose
to receive cash. Distributions and dividends generally will be taxable as either
ordinary  income or long-term  capital  gains.  For example,  if an  UltraSector
ProFund  designates  a  particular  distribution  as a  long-term  capital  gain
distribution,  it will be taxable to  shareholders  at their  long-term  capital
gains rate.  Dividends and  distributions may also be subject to state and local
taxes.

          Every  year,  the  UltraSector  ProFunds  will send  shareholders  tax
information on the dividends and distributions for the previous year.

          If shareholders sell or redeem their UltraSector  ProFund shares, they
may  have a  capital  gain or  loss,  which  will be  long-term  or  short-term,
generally  depending  upon how long they have held the  shares.  An  exchange of
UltraSector ProFund shares may be treated as a sale.

          The  tax  consequences  for  tax  deferred   retirement   accounts  or
non-taxable shareholders will be different.

Please keep in mind:

   .   Whether  a  distribution   by  an  UltraSector   ProFund  is  taxable  to
       shareholders  as  ordinary  income or at the  lower  capital  gains  rate
       depends on whether it is a long-term capital gain of the ProFund,  not on
       how long an investor has owned shares of the UltraSector ProFund.

   .   Dividends  and  distributions  declared  by  an  UltraSector  ProFund  in
       October, November or December of one year and paid in January of the next
       year may be taxable in the year the UltraSector ProFund declared them.

   .   As with all mutual  funds,  an  UltraSector  ProFund  may be  required to
       withhold  U.S.  federal  income  tax at the  rate  of 31% of all  taxable
       distributions and redemption  proceeds,  payable to shareholders who fail
       to provide the UltraSector  ProFund with correct taxpayer  identification
       numbers or to make required certifications,  or who have been notified by
       the IRS that they are subject to backup  withholding.  Backup withholding
       is not an additional tax; rather, it is a way in which the IRS ensures it
       will collect taxes  otherwise  due. Any amounts  withheld may be credited
       against the shareholder's U.S. federal income tax liability. You also may
       be subject to a $50 fee to  reimburse  the  UltraSector  ProFunds for any
       penalty that the IRS may impose.

          Please  see  the   Statement  of  Additional   Information   for  more
information.  Because each investor's tax  circumstances  are unique and because
the tax laws are subject to change,  the Advisor  recommends  that  shareholders
consult  their  tax  advisors  about  federal,  state,  local  and  foreign  tax
consequences of investment in the UltraSector ProFunds.
<PAGE>

Classes of Shares

          Investors  in any of the  UltraSector  ProFunds  can  purchase  either
Investor  Class shares  directly,  or Service Class shares through an authorized
firm, such as a registered investment advisor, a bank or a trust company.  Under
a shareholder  services plan for Service Class shares,  each UltraSector ProFund
may pay an authorized  firm up to 1.00% on an annualized  basis of average daily
net assets attributable to its customers who are Service Class shareholders.

          For this fee, the authorized  firms may provide a variety of services,
such as:

   .   receiving and processing shareholder orders,

   .   performing the accounting for the shareholder's account,

   .   maintaining retirement plan accounts,

   .   answering questions and handling correspondence for individual accounts,

   .   acting as the sole shareholder of record for individual shareholders,

   .   issuing shareholder reports and transaction confirmations,

   .   executing daily investment "sweep" functions, and

   .   furnishing investment advisory services.

          Service  Class  shareholders  pay all fees and expenses  applicable to
Service Class shares.

          Because ProFunds  adopted the shareholder  services plan to compensate
authorized firms for providing the types of services  described above,  ProFunds
believes the  shareholder  services  plan is not covered by Rule 12b-1 under the
Investment  Company Act of 1940, which relates to payment of distribution  fees.
ProFunds  does,  however,  follow the procedural  requirements  of Rule 12b-1 in
connection  with  the  implementation  and  administration  of  the  shareholder
services plan.

          An authorized firm generally represents in a service agreement used in
connection with the shareholder  services plan that all compensation  payable to
the  authorized  firm from its  customers in connection  with the  investment of
their assets in the  UltraSector  ProFunds  will be disclosed by the  authorized
firm to its  customers.  It also generally  provides that all such  compensation
will be authorized by the authorized firm's customers.

          ProFunds does not monitor the actual  services  being  performed by an
authorized firm under the plan and related service agreement. ProFunds also does
not monitor the reasonableness of the total compensation that an authorized firm
may receive,  including any service fee that an authorized firm may receive from
the UltraSector  ProFunds and any  compensation  the authorized firm may receive
directly from its clients.

<PAGE>



                           SHAREHOLDER SERVICES GUIDE

Contacting the UltraSector ProFunds

By telephone:              (888) 776-3637 or (614) 470-8122--
                           for investors
                           (888) 776-5717--a phone line dedicated
                           for use by financial professionals only

By mail:                   ProFunds
                           P.O. Box 182800
                           Columbus, OH 43218-2800

By overnight mail:         ProFunds
                           c/o BISYS Fund Services
                           3435 Stelzer Road
                           Columbus, OH 43219

Minimum Initial Investments
 . $5,000 for discretionary accounts controlled by a financial professional.
 . $15,000 for self-directed accounts controlled directly by investors.

          These minimums apply to all accounts,  including retirement plans, and
apply  to  the  total  value  of  an  investor's  initial   UltraSector  ProFund
investment.  The UltraSector  ProFunds reserve the right to reject or refuse, at
their discretion,  any order for the purchase of an UltraSector ProFund's shares
in whole or in part.

Opening Your UltraSector ProFunds Account

          By mail: Send a completed  application,  along with a check payable to
"ProFunds," to the  aforementioned  address.  Cash, credit cards and credit card
checks are not accepted.  Please contact the UltraSector  ProFunds in advance if
you wish to send third party checks.  All  purchases  must be made in US dollars
through a US bank.

          By wire transfer:  First,  complete an  application  and fax it to the
UltraSector ProFunds at (800) 782-4797 (toll-free) or (614) 470-8718. Next, call
the UltraSector  ProFunds at (888) 776-3637 (toll-free) or (614) 470-8122 to: a)
confirm receipt of the faxed application, b) request your new account number, c)
inform  the  UltraSector  ProFunds  of the  amount to be wired and d)  receive a
confirmation  number for your purchase order.  After receiving your confirmation
number, instruct your bank to transfer money by wire to:

UMB Bank, N.A.
Kansas City, MO
Routing/ABA #:101000695
ProFunds DDA #9870857952
<PAGE>

          For  further  credit  to:  Your  name,  the  name  of the  UltraSector
ProFund(s), and your UltraSector ProFunds account number.

          Confirmation  number:  The  confirmation  number  given  to you by the
ProFunds representative.

          After faxing a copy of the completed application, send the original to
the UltraSector ProFunds via mail or overnight delivery. The addresses are shown
above under "Contacting the UltraSector ProFunds by mail."

          Instructions, written or telephonic, given to the UltraSector ProFunds
for wire  transfer  requests do not  constitute a purchase  order until the wire
transfer  has been  received  and  accepted  by the  UltraSector  ProFunds.  The
UltraSector ProFunds are not liable for any loss incurred due to a wire transfer
not having been received.

          Please note that your bank may charge a fee to send or receive wires.

Establishing Accounts For Tax-Sheltered Retirement Plans

          The  UltraSector  ProFunds  sponsor  Individual   Retirement  Accounts
("IRAs") that enable individual investors to set up their own retirement savings
programs.  The ProFund  Advisor charges an annual fee of $15 per social security
number for all types of IRAs to pay for the extra  maintenance and tax reporting
that these plans require.  Investors in other types of retirement plans also may
invest  in  the  UltraSector  ProFunds.   For  additional   information  and  an
application,  contact the UltraSector ProFunds directly by phone or at the above
address.

Purchasing Additional UltraSector ProFunds Shares

          By mail:  Send a check payable to "ProFunds",  noting the  UltraSector
ProFund and account number, to the aforementioned  address.  Cash, credit cards,
and credit card checks are not accepted. Please contact the UltraSector ProFunds
in advance if you wish to send third party checks. All purchases need to be made
in US dollars through a US bank.

          By wire transfer:  Call the  UltraSector  ProFunds to inform us of the
amount you will be wiring and to receive a confirmation number.

          You can then instruct your bank to transfer your funds to:

          UMB Bank, N.A.
          Kansas City, MO
          Routing/ABA #:101000695
          ProFunds DDA #9870857952

          For  further  credit  to:  Your  name,  the  name  of the  UltraSector
ProFund(s), and your UltraSector ProFunds account number.

          Confirmation  number:  The  confirmation  number  given  to you by the
ProFunds representative.

          Instructions, written or telephonic, given to the UltraSector ProFunds
for wire  transfer  requests do not  constitute a purchase  order until the wire
transfer  has been  received  and  accepted  by the  UltraSector  ProFunds.  The
UltraSector ProFunds are not liable for any loss incurred due to a wire transfer
not having been received. Please note that your bank may charge a fee to send or
receive wires.

<PAGE>


Please keep in mind when purchasing shares:

   .   The minimum subsequent purchase amount is $100.

   .   The UltraSector ProFunds price shares you purchase at the price per share
       next  computed  after we receive and accept your  purchase  order in good
       order.  To be in good  order,  a purchase  order must  include a properly
       completed application and wire, check or other form of payment.

   .   A wire order is  considered  in good  order  only if (i) you have  called
       ProFunds  under the  procedures  described  above  and (ii) the  ProFunds
       receive and accept your wire.  The  UltraSector  ProFunds can only accept
       wires  during the times they  process  wires:  between 8:00 a.m. and 3:10
       p.m., Eastern time for all the UltraSector ProFunds. Wires received after
       the  UltraSector  ProFunds' wire  processing  times will be processed the
       next business day and will receive that day's share price. If the primary
       exchange or market on which an  UltraSector  ProFund  transacts  business
       closes  early,  the above  cut-off  time will be 25 minutes  prior to the
       close of such exchange or market.

   .   If your purchase is  cancelled,  you will be  responsible  for any losses
       that may result from any decline in the value of the cancelled  purchase.
       The  UltraSector  ProFunds (or their agents) have the authority to redeem
       shares in your  account(s)  to cover any  losses due to  fluctuations  in
       share  price.  Any profit on a cancelled  transaction  will accrue to the
       UltraSector ProFunds.

   .   Securities  brokers and dealers have the  responsibility  of transmitting
       your orders promptly.  Brokers and dealers may charge transaction fees on
       the purchase and/or sale of a ProFund shares.

Exchanges

          Shareholders  can exchange  shares of either class of any  UltraSector
ProFund for shares of either class of another ProFund,  including  ProFunds that
are not  described  in this  prospectus,  free of charge.  The ProFunds can only
honor  exchanges  between  accounts  registered in the same name, and having the
same address and taxpayer identification number.

          The ProFunds accept  exchange  orders either by phone, in writing,  or
from the  Internet.  You will  need to  specify  the  number of  shares,  or the
percentage or dollar value of the shares you wish to exchange,  and the ProFunds
(and  classes of shares)  involved in the  transaction.  The  ProFunds  can only
accept exchange orders by phone between 8:00 a.m. and 3:30 p.m. and between 4:00
p.m. and 9:00 p.m.  Eastern time.  The ProFunds may not receive or accept orders
at any other time by phone. If the primary  exchange or market  (generally,  the
CME) on which a ProFund transacts  business closes early, the above cut-off time
for phone  exchanges  will be 25 minutes  prior to the close of such exchange or
market.

          Shareholder  may use  their  personal  computer  to  transact  on-line
exchanges of the ProFunds' shares at ProFunds' website  (www.profunds.com).  The
ProFunds can only accept exchange orders by Internet  between 8:00 a.m. and 3:35
p.m.  and between  4:30 p.m. and 9:00 p.m.  Eastern  Time.  The ProFunds may not
receive or accept  orders at any other time by Internet.  To access this service
through the website,  you click on the "Trade/Access  Account" icon and you will
be  prompted to enter your Social  Security  Number.  You should then follow the
instructions to establish your Personal  Identification Number (PIN), which will
allow you to execute  exchanges  between ProFunds and to access ProFunds account
information.
<PAGE>

          Internet exchange transactions are extremely  convenient,  but are not
risk free.  To ensure that all  Internet  transactions  are safe,  secure and as
risk-free as possible, ProFunds has instituted certain safeguards and procedures
for determining the identity of website users. As a result, neither ProFunds nor
its transfer agent will be responsible for any loss, liability,  cost or expense
for following Internet  instructions they reasonably  believe to be genuine.  If
you or your intermediary make exchange requests by Internet,  you will generally
bear the risk of any loss.

          The ProFunds'  Prospectuses  are readily  available for viewing on the
website.

          The ProFunds may terminate the ability to exchange  ProFund  shares on
its website at any time,  in which case you may  continue to exchange  shares as
otherwise provided in this Prospectus.

Please keep in mind when exchanging shares:

     .    An exchange is actually a  redemption  (sale) of shares of one ProFund
          and purchase of shares of another ProFund.

     .    The minimum exchange for self-directed accounts is $1,000 or, if less,
          for the account's entire current value.

     .    You may  exchange,  on a regular  basis,  shares  of the Money  Market
          ProFund (described in another prospectus) for shares of other ProFunds
          through an  Automatic  Exchange  Plan.  For more  information  on this
          option, please call the ProFunds at (888) 776-3637.

     .    Before  executing  an  exchange   between  the  UltraSector   ProFunds
          described  in  this  prospectus  for  shares  of  another  ProFund,  a
          shareholder  must  first  review the  prospectus  related to the other
          ProFund. Such prospectus may be obtained by contacting the ProFunds by
          letter or telephone  at the address or  telephone  number noted on the
          back cover of this prospectus.

Redeeming UltraSector ProFund Shares

          You can redeem all or part of your shares at the price next determined
after we receive and accept your request.  The UltraSector  ProFunds only accept
redemption orders by phone between 8:00 a.m. and 3:30 p.m. and between 4:00 p.m.
and 9:00 p.m.  Eastern time. The UltraSector  ProFunds may not receive or accept
orders  at any  other  time.  If the  primary  exchange  or  market  on which an
UltraSector ProFund transacts business closes early, the above cut-off time will
be 25 minutes prior to the close of such exchange or market.


<PAGE>



Written Redemptions

          To redeem all or part of your shares in writing, your request needs to
include the following information to the aforementioned address:

     .    the name of the UltraSector ProFund(s),
     .    the account number(s),
     .    the amount of money or number of shares being redeemed,
     .    the name(s) of the account owners,
     .    the signature(s) of all registered  account owners, and
     .    your daytime telephone number.

Wire Redemptions

          If your account is authorized for wire redemption,  your proceeds will
be wired  directly into the bank account you have  designated.  The  UltraSector
ProFunds  charge a $15 service fee for a wire transfer of  redemption  proceeds,
and your bank may charge an  additional  fee to receive  the wire.  If you would
like  to  establish  this  option  on  an  existing  account,  please  call  the
UltraSector  ProFunds to request the appropriate  form. Wire redemptions are not
available for retirement accounts.

Signature Guarantee

          Certain redemption requests must include a signature  guarantee.  Your
request  needs to be in writing and include a signature  guarantee if any of the
following situations apply:

     .    Your account  registration  or address has changed  within the last 30
          calendar days.

     .    The check is being mailed to a different  address than the one on your
          account.

     .    The check or wire is being  made  payable  to  someone  other than the
          account owner.

     .    The  redemption  proceeds are being  transferred  to an account with a
          different registration.

     .    You wish to redeem more than $100,000.

     .    You are adding or changing wire instructions on your account.

     .    Other unusual  situations as determined by the  UltraSector  ProFunds'
          transfer agent.

          Signature   guarantees  may  be  provided  by  an  eligible  guarantor
institution  such as a  commercial  bank,  an NASD  member  firm such as a stock
broker, a savings association or a national securities exchange.
<PAGE>

Please keep in mind when redeeming shares:

   .   Redemptions from  self-directed  accounts must be for at least $1,000 or,
       if less, for the account's  entire current value.  The remaining  balance
       needs to be above the applicable minimum investment.

   .   The ProFunds  normally  remit  redemption  proceeds  within seven days of
       completing your liquidation out of the relevant  UltraSector ProFund. For
       redemption  of shares  purchased  by check or Automatic  Investment,  the
       UltraSector  ProFunds  may wait up to 15 days before  sending  redemption
       proceeds to assure that the  transfer  agent has  collected  the purchase
       payment.

   .   The UltraSector ProFunds will remit payment of telephone redemptions only
       to the  address or bank of record on the  account  application.  You must
       submit,  in writing,  a request for payment to any other  address,  along
       with a signature guarantee from a financial service organization.

   .   To redeem  shares in a retirement  account,  your request  needs to be in
       writing,  except for exchanges to other ProFunds,  which can be requested
       by phone or in  writing.  Call the  UltraSector  ProFunds  to  request  a
       retirement distribution form.

   .   Involuntary  Redemptions:  The UltraSector  ProFunds reserve the right to
       redeem  involuntarily  an  investor's  account,  including  a  retirement
       account,  which falls below the  applicable  minimum  investment in total
       value in the UltraSector ProFunds due to redemption.  In addition, both a
       request for a partial  redemption by an investor whose account balance is
       below the minimum  investment and a request for partial  redemption by an
       investor that would bring the account below the minimum  investment  will
       be treated as a request by the investor for a complete  redemption of the
       account.

Suspension of Redemptions

          Your  right of  redemption  may be  suspended,  or the date of payment
postponed:  (i) for any period during which the NYSE or the Federal Reserve Bank
of New York, as appropriate,  is closed (other than customary weekend or holiday
closings) or trading on the NYSE, as appropriate,  is restricted,  as determined
by the Securities and Exchange  Commission;  (ii) for any period during which an
emergency  exists, as determined by the Securities and Exchange  Commission,  so
that disposal of a ProFund's  investments or the  determination of its net asset
value is not  reasonably  practicable;  or (iii) for such  other  periods as the
Securities and Exchange  Commission,  by order, may permit for protection of the
UltraSector ProFunds' investors.

Automatic Investment and Redemption Plans

          Shareholders  may buy and redeem  shares  automatically  on a monthly,
bimonthly, quarterly or annual basis. The minimum automatic purchase is $100 and
the minimum  automatic  redemption  is $500.  These  minimums are waived for IRA
shareholders 70 1/2 years of age or older.

          If you would like to establish such an option on an existing  account,
please call the UltraSector ProFunds.
<PAGE>

About Telephone Transactions

   .   It may be difficult to reach the UltraSector ProFunds by telephone during
       periods of heavy  market  activity or other  times.  If you are unable to
       reach us by telephone, consider sending written instructions.

   .   You  may  initiate  numerous  transactions  by  telephone.  Please  note,
       however,  that the ProFunds and their agents will not be responsible  for
       losses resulting from unauthorized  transactions when procedures designed
       to verify the identity of the caller are followed.

                               PROFUNDS MANAGEMENT

Board of Trustees and Officers

          The  UltraSector  ProFunds'  Board of Trustees is responsible  for the
general  supervision of the  UltraSector  ProFunds.  The  UltraSector  ProFunds'
officers are responsible for day-to-day operations of the UltraSector ProFunds.

Investment Advisor

ProFund Advisors LLC

          ProFund  Advisors LLC,  located at 7900 Wisconsin  Avenue,  Suite 300,
Bethesda,  Maryland  20814,  serves  as  the  investment  advisor  to all of the
UltraSector  ProFunds.  Founded in 1997,  ProFund Advisors  provides  investment
advisory  and/or  management  services to 10 other  mutual funds not included in
this prospectus,  totaling approximately $2.4 billion in assets, as of March 31,
2000. ProFund Advisors oversees the investment and reinvestment of the assets in
each  UltraSector  ProFund  and the ProFund  family of funds.  It is entitled to
receive  fees  equal to 0.75% of the  average  daily  net  assets of each of the
UltraSector ProFunds. ProFund Advisors bears the costs of advisory services.

          Michael L.  Sapir,  Chairman  and Chief  Executive  Officer of ProFund
Advisors LLC,  served as senior vice president of Padco  Advisors,  Inc.,  which
advised Rydex(R) Funds. In addition,  Mr. Sapir practiced law for over 13 years,
most recently as a partner in a Washington-based  law firm. As an attorney,  Mr.
Sapir advised and represented mutual funds and other financial institutions.  He
holds degrees from  Georgetown  University  Law Center (J.D.) and  University of
Miami (M.B.A. and B.A.).

          Louis M.  Mayberg,  President  of  ProFund  Advisors  LLC,  co-founded
National Capital Companies,  L.L.C., an investment bank in 1986, and manages its
hedge fund. He holds a Bachelor of Business  Administration  degree with a major
in Finance from George Washington University.

          William E. Seale,  Ph.D.,  Director of Portfolio for ProFund  Advisors
LLC, has more than 29 years of experience in the commodity futures markets.  His
background  includes a five-year  presidential  appointment as a commissioner of
the U.S.  Commodity  Futures  Trading  Commission.  He  earned  his  degrees  at
University  of  Kentucky.  Dr. Seale also holds an  appointment  as Professor of
Finance at George Washington University.

          Each  UltraSector  ProFund is managed by an investment team chaired by
Dr. Seale.

<PAGE>

Other Service Providers

          BISYS  Fund  Services,  located  at 3435  Stelzer  Road,  Suite  1000,
Columbus,  Ohio 43219,  acts as the  administrator to the UltraSector  ProFunds,
providing operations,  compliance and administrative  services. Each UltraSector
ProFund pays BISYS a fee, on a sliding scale, for its  administrative  services.
For average daily net assets in the ProFund  family of funds up to $300 million,
the fee is 0.15% of the assets,  and it declines to 0.05% for average  daily net
assets of $1 billion or more.

          ProFund  Advisors  also  performs  client  support and  administrative
services for the UltraSector  ProFunds.  Each UltraSector  ProFund pays a fee of
0.15% of its average daily net assets for these services.

Index Providers

          "Dow Jones" and each Dow Jones sector  index are service  marks of Dow
Jones & Company, Inc. Dow Jones has no relationship to ProFunds,  other than the
licensing  of the Dow Jones  sector  indices  and its  service  marks for use in
connection with the UltraSector ProFunds.

Dow Jones does not:

 .    Sponsor, endorse, sell or promote the UltraSector ProFunds.

 .    Recommend that any person invest in the  UltraSector  ProFunds or any other
     securities.

 .    Have  any  responsibility  or  liability  for or make any  decisions  about
     timing, amount or pricing of the UltraSector ProFunds.

 .    Have any responsibility or liability for the administration,  management or
     marketing of the UltraSector ProFunds.

 .    Consider the needs of the UltraSector  ProFunds or the  shareholders of the
     UltraSector ProFunds in determining, composing or calculating the Dow Jones
     sector indices or have any obligation to do so.


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

          Dow  Jones  will  not  have  any  liability  in  connection  with  the
UltraSector ProFunds.

Specifically,

o    Dow Jones does not make any  warranty,  express or  implied,  and Dow Jones
     disclaims any warranty about:
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
     o    The  results  to  be  obtained  by  the  UltraSector   ProFunds,   the
          shareholders  of the  UltraSector  ProFunds  or any  other  person  in
          connection  with the use of the Dow Jones sector  indices and the data
          included in the Dow Jones sector indices;
--------------------------------------------------------------------------------
<PAGE>


--------------------------------------------------------------------------------
          o    The accuracy or  completeness of the Dow Jones sector indices and
               their data; or

          o    The  merchantability  and the fitness for a particular purpose or
               use of the Dow Jones sector indices and their data;
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
     o    Dow  Jones  will  have  no  liability  for  any  errors,  omission  or
          interruptions in the Dow Jones sector indices or its data;

     o    Under no  circumstances  will Dow Jones be liable for any lost profits
          or indirect,  punitive,  special or  consequential  damages or losses,
          even if Dow Jones knows that they might occur.

          The licensing  agreement  between ProFunds and Dow Jones is solely for
their  benefit and not for the benefit of the  shareholders  of the  UltraSector
ProFunds or any other third parties.
--------------------------------------------------------------------------------








<PAGE>



                                                                    [Back Cover]

          You can find more detailed  information  about each of the UltraSector
ProFunds in their current Statement of Additional Information,  dated [ ], 2000,
which we have filed  electronically  with the Securities and Exchange Commission
(SEC) and which is  incorporated  by reference  into,  and is legally a part of,
this  prospectus  dated [ ], 2000.  To receive  your free copy of a Statement of
Additional  Information,  or if  you  have  questions  about  investing  in  the
UltraSector ProFunds, write to us at:

ProFunds
P.O. Box 182800
Columbus, OH 43218-2800

or call our toll-free numbers:
(888) PRO-FNDS (888) 776-3637 For Investors
(888) PRO-5717 (888) 776-5717 Financial Professionals Only

or visit our website www.profunds.com.

          You can find other information  about the UltraSector  ProFunds on the
SEC's website  (http://www.sec.gov),  or you can get copies of this information,
after payment of a duplicating fee, by electronic request at  [email protected]
or by writing  to the Public  Reference  Section  of the SEC,  Washington,  D.C.
20549-0102.   Information  about  the  UltraSector  ProFunds,   including  their
Statement  of  Additional  Information,  can be reviewed and copied at the SEC's
Public  Reference  Room  in  Washington,  D.C.  For  information  on the  Public
Reference Room, call the SEC at 1-202-942-8090.

                                                      ProFunds Executive Offices
                                                             Bethesda, MD

[Logo]

811-08239






<PAGE>


                                    PROFUNDS

                       STATEMENT OF ADDITIONAL INFORMATION

                        7900 WISCONSIN AVENUE, SUITE 300
                            BETHESDA, MARYLAND 20814

                       (888) 776-3637 RETAIL SHAREHOLDERS
                   (888) 776-5717 FINANCIAL PROFESSIONALS ONLY

     This Statement of Additional  Information describes the Airline UltraSector
ProFund,   the  Banking  UltraSector  ProFund,  the  Entertainment  and  Leisure
UltraSector ProFund, and the Oilfield Equipment and Services UltraSector ProFund
(collectively,  the  "ProFunds").  Each  ProFund  offers two  classes of shares:
Service  Class shares and  Investor  Class  shares.  The ProFunds may be used by
professional  money  managers and  investors as part of an  asset-allocation  or
market-timing  investment strategy or to create specified investment exposure to
a particular segment of the securities market or to hedge an existing investment
portfolio.  The ProFunds may be used  independently  or in combination with each
other as part of an overall investment strategy.

     The ProFunds involve special risks, some not traditionally  associated with
mutual funds.  Investors  should  carefully  review and evaluate  these risks in
considering an investment in the ProFunds to determine  whether an investment in
a particular  ProFund is appropriate.  None of the ProFunds alone  constitutes a
balanced  investment  plan.  The ProFunds are not intended for  investors  whose
principal objective is current income or preservation of capital. Because of the
inherent risks in any investment,  there can be no assurance that the investment
objectives of the ProFunds will be achieved.

     This Statement of Additional Information is not a prospectus.  It should be
read  in  conjunction  with  the  ProFunds'  Prospectus,  dated  [ ],  2000,  as
supplemented from time to time, which  incorporates this Statement of Additional
Information  by reference.  Words or phrases used in the Statement of Additional
Information  without definition have the same meaning as ascribed to them in the
Prospectus. A copy of the Prospectus is available,  without charge, upon request
to the address above or by telephoning at the telephone numbers above.

     The date of this Statement of Additional Information is [ ], 2000.


<PAGE>


                       TABLE OF CONTENTS


                                                                           PAGE

ProFunds..................................................................
Investment Policies and Techniques........................................
Investment Restrictions...................................................
Determination of Net Asset Value..........................................
Portfolio Transactions and Brokerage......................................
Management of ProFunds....................................................
Costs and Expenses........................................................
Organization and Description of Shares of Beneficial Interest.............
Taxation .................................................................
Performance Information ..................................................
Financial Statements......................................................

<PAGE>


                                    PROFUNDS

     ProFunds (the "Trust") is an open-end management  investment  company,  and
currently  comprises  forty-three  separate  series.  Four  of  the  series  are
discussed herein. All of the ProFunds are classified as  non-diversified.  Other
series may be added in the future.  The ProFunds may be used independently or in
combination with each other as part of an overall investment strategy. Shares of
any ProFund may be exchanged,  without any charge,  for shares of the same class
of any other  ProFund  on the basis of the  respective  net asset  values of the
shares  involved;  provided that, in connection with exchanges for shares of the
ProFund,  certain minimum  investment  levels are maintained (see  "Shareholders
Services Guide -- Exchanges " in the Prospectus).


                       INVESTMENT POLICIES AND TECHNIQUES

GENERAL

     Reference  is made to the  Prospectus  for a discussion  of the  investment
objectives and policies of the ProFunds. In addition, set forth below is further
information  relating to the ProFunds.  The  discussion  below  supplements  and
should be read in  conjunction  with the  Prospectus.  Portfolio  management  is
provided to the ProFunds by its  investment  adviser,  ProFund  Advisors  LLC, a
Maryland limited liability  company with offices at 7900 Wisconsin  Avenue,  NW,
Bethesda, Maryland 20814 (the "Advisor").

     Certain  investment  restrictions of a ProFund  specifically  identified as
fundamental policies may not be changed without the affirmative vote of at least
the  majority  of the  outstanding  shares of that  ProFund,  as  defined in the
Investment  Company Act of 1940,  as amended  (the "1940 Act").  All  investment
objectives or investment  policies of the ProFunds not specified as  fundamental
(including the benchmarks of the ProFunds) may be changed by the Trustees of the
Trust without the approval of shareholders.

     It is the policy of the ProFunds to pursue their investment  objectives and
investment  strategies  regardless of market conditions,  to remain nearly fully
invested and not to take defensive positions.

     The investment strategies of the ProFunds discussed below, and as discussed
in the  Prospectus,  may be used by a ProFund if, in the opinion of the Advisor,
these strategies will be advantageous to the ProFunds.  The ProFunds are free to
reduce or eliminate their activity in any of those areas without  changing their
fundamental  investment  policies.  There  is no  assurance  that  any of  these
strategies  or any other  strategies  and methods of  investment  available to a
ProFund will result in the achievement of its objective.

                       INVESTMENT OBJECTIVES AND POLICIES

     The investment  objectives and general  investment  polices of each ProFund
are described in the Prospectus.  Each ProFund seeks to provide daily investment
results, before fees and expenses, that correspond to 150% of the performance of
a specified  Dow Jones sector  index.  The  ProFunds  invest as described in the
Prospectus in order to produce leveraged  investment results. The combination of
sector-specific  funds  and  leveraging  may  increase  the  volatility  of  the
ProFunds.

     Additional  information  concerning  the  characteristics  of the ProFunds'
investments is set forth below.

EQUITY SECURITIES

     The  market  price  of  securities  owned by a  ProFund  may go up or down,
sometimes  rapidly  or  unpredictably.  Securities  may  decline in value due to
factors  affecting   securities  markets  generally  or  particular   industries
represented in the securities  markets.  The value of a security may decline due
to general market conditions which are not specifically  related to a particular
company,  such as real or perceived adverse economic conditions,  changes in the
general outlook for corporate  earnings,  changes in interest or currency rates,
or adverse investor  sentiment  generally.  They may also decline due to factors
which affect a particular  industry or  industries,  such as labor  shortages or
increased  production costs and competitive  conditions within an industry.  The
value of a security  may also  decline  for a number of reasons  which  directly
relate to the issuer,  such as management  performance,  financial  leverage and
reduced demand for the issuer's goods or services.  Equity securities  generally
have greater price volatility than fixed income securities, and the ProFunds are
particularly sensitive to these market risks.
<PAGE>

FOREIGN INVESTMENT RISK

     Each  ProFund  may  invest  in  securities  of  foreign  issuers  ("foreign
securities").  Investments in foreign  securities may experience  more rapid and
extreme  changes in value than  investments  in  securities  of U.S.  issuers or
securities that trade  exclusively in U.S.  markets.  The securities  markets of
many foreign countries are relatively small, and foreign  securities often trade
with less  frequency  and volume than  domestic  securities  and are usually not
subject to the same degree of  regulation  as U.S.  issuers.  Special  U.S.  tax
considerations may apply to a ProFund's investment in foreign securities.

CURRENCY RISK

     The ProFunds may invest in  securities  that trade in, or receive  revenues
in, foreign currencies.  To the extent that a ProFund does so, that ProFund will
be subject to the risk that those  currencies  will decline in value relative to
the U.S. dollar. Currency rates in foreign countries may fluctuate significantly
over short  periods of time.  ProFund  assets which are  denominated  in foreign
currencies may be devalued against the U.S. dollar, resulting in a loss.

FUTURES CONTRACTS AND RELATED OPTIONS

     The ProFunds may purchase or sell stock index futures contracts and options
thereon as a  substitute  for a  comparable  market  position in the  underlying
securities or to satisfy regulation  requirements.  A futures contract obligates
the seller to deliver  (and the  purchaser to take  delivery  of) the  specified
commodity on the expiration date of the contract. A stock index futures contract
obligates  the seller to deliver  (and the  purchaser to take) an amount of cash
equal to a specific dollar amount multiplied by the difference between the value
of a specific  stock index at the close of the last  trading day of the contract
and the  price at which the  agreement  is made.  No  physical  delivery  of the
underlying stocks in the index is made.

     When a ProFund  purchases a put or call option on a futures  contract,  the
ProFund pays a premium for the right to sell or purchase the underlying  futures
contract  for a  specified  price upon  exercise  at any time  during the option
period.  By writing  (selling)  a put or call  option on a futures  contract,  a
ProFund receives a premium in return for granting to the purchaser of the option
the right to sell to or buy from the ProFund the underlying futures contract for
a specified price upon exercise at any time during the option period.

     Whether a ProFund realizes a gain or loss from futures  activities  depends
generally  upon  movements  in  the  underlying  commodity.  The  extent  of the
ProFund's  loss from an unhedged  short  position in futures  contracts  or from
writing options on futures contracts is potentially unlimited.  The ProFunds may
engage in related closing purchase or sale  transactions with respect to options
on  futures  contracts  by  buying  an  option  of the same  series as an option
previously  written by a ProFund,  or selling an option of the same series as an
option  previously   purchased  by  a  ProFund.  The  ProFunds  will  engage  in
transactions in futures  contracts and related options that are traded on a U.S.
exchange  or board of trade or that have been  approved  for sale in the U.S. by
the Commodity Futures Trading Commission.

     When a ProFund purchases or sells a stock index futures contract,  or sells
an option thereon,  the ProFund "covers" its position.  To cover its position, a
ProFund may enter into an  offsetting  position or maintain  with its  custodian
bank (and  mark-to-market on a daily basis) a segregated  account  consisting of
liquid  instruments  that,  when added to any amounts  deposited  with a futures
commission  merchant  as margin,  are equal to the market  value of the  futures
contract or otherwise "cover" its position.
<PAGE>

     The ProFunds may purchase and sell futures  contracts  and options  thereon
only  to  the  extent  that  such  activities   would  be  consistent  with  the
requirements  of Section 4.5 of the  regulations  promulgated  by the  Commodity
Futures Trading Commission (the "CFTC Regulations") under the Commodity Exchange
Act under which each of these  ProFunds would be excluded from the definition of
a  "commodity  pool  operator."  Under  Section 4.5 of the CFTC  Regulations,  a
ProFund  may engage in  futures  transactions,  either  for "bona fide  hedging"
purposes, as this term is defined in the CFTC Regulations, or for non- bona fide
hedging  purposes to the extent that the  aggregate  initial  margins and option
premiums  required to  establish  such non- bona fide  hedging  positions do not
exceed 5% of the liquidation value of the ProFund's portfolio. In the case of an
option on  futures  contracts  that is  "in-the-money"  at the time of  purchase
(i.e.,  the amount by which the  exercise  price of the put option  exceeds  the
current  market  value of the  underlying  security  or the  amount by which the
current  market value of the underlying  security  exceeds the exercise price of
the call option), the in-the-money amount may be excluded in calculating this 5%
limitation.

     The ProFunds will cover their positions when they write a futures  contract
or option on a futures  contract.  A ProFund may "cover" its long  position in a
futures  contract by purchasing a put option on the same futures contract with a
strike price (i.e.,  an exercise  price) as high or higher than the price of the
futures  contract,  or, if the strike price of the put is less than the price of
the futures contract,  the ProFund will maintain in a segregated account cash or
liquid  instruments equal in value to the difference between the strike price of
the put and the price of the futures contract. A ProFund may also cover its long
position  in a futures  contract by taking a short  position in the  instruments
underlying  the futures  contract,  or by taking  positions in  instruments  the
prices of which are expected to move  relatively  consistently  with the futures
contract. A ProFund may cover its short position in a futures contract by taking
a long position in the instruments underlying the futures contract, or by taking
positions in  instruments  the prices of which are  expected to move  relatively
consistently with the futures contract.

     A  ProFund  may cover its sale of a call  option on a futures  contract  by
taking a long position in the underlying  futures  contract at a price less than
or equal to the strike price of the call option, or, if the long position in the
underlying  futures  contract is  established at a price greater than the strike
price of the written  (sold)  call,  the ProFund  will  maintain in a segregated
account liquid  instruments equal in value to the difference  between the strike
price of the call and the price of the  futures  contract.  A  ProFund  may also
cover its sale of a call option by taking positions in instruments the prices of
which are  expected to move  relatively  consistently  with the call  option.  A
ProFund  may cover its sale of a put  option on a futures  contract  by taking a
short  position in the  underlying  futures  contract at a price greater than or
equal to the strike  price of the put option,  or, if the short  position in the
underlying futures contract is established at a price less than the strike price
of the written put, the ProFund  will  maintain in a segregated  account cash or
high-grade  liquid debt securities equal in value to the difference  between the
strike  price of the put and the price of the  future.  A ProFund may also cover
its sale of a put option by taking  positions in instruments the prices of which
are expected to move relatively consistently with the put option.

     Although the ProFunds intend to sell futures  contracts only if there is an
active market for such contracts, no assurance can be given that a liquid market
will exist for any  particular  contract at any  particular  time.  Many futures
exchanges  and boards of trade  limit the  amount of  fluctuation  permitted  in
futures  contract  prices during a single  trading day. Once the daily limit has
been reached in a particular contract, no trades may be made that day at a price
beyond that limit or trading may be suspended for specified  periods  during the
day.  Futures  contract  prices could move to the limit for several  consecutive
trading days with little or no trading, thereby preventing prompt liquidation of
futures positions and potentially subjecting a ProFund to substantial losses. If
trading  is not  possible,  or if a  ProFund  determines  not to close a futures
position  in  anticipation  of adverse  price  movements,  the  ProFund  will be
required to make daily cash  payments  of  variation  margin.  The risk that the
ProFund  will be unable to close out a futures  position  will be  minimized  by
entering into such transactions on a national exchange with an active and liquid
secondary market.
<PAGE>

INDEX OPTIONS

     The  ProFunds may  purchase  and write  options on stock  indexes to create
investment  exposure  consistent with their investment  objectives,  to hedge or
limit the  exposure of their  positions  and to create  synthetic  money  market
positions. See "Taxation" herein.

     A stock index  fluctuates  with changes in the market  values of the stocks
included  in the index.  Options on stock  indexes  give the holder the right to
receive  an amount of cash upon  exercise  of the  option.  Receipt of this cash
amount  will  depend  upon the  closing  level of the stock index upon which the
option is based being  greater than (in the case of a call) or less than (in the
case of a put) the exercise price of the option. The amount of cash received, if
any,  will be the  difference  between  the  closing  price of the index and the
exercise price of the option,  multiplied by a specified  dollar  multiple.  The
writer (seller) of the option is obligated,  in return for the premiums received
from the  purchaser  of the  option,  to make  delivery  of this  amount  to the
purchaser. All settlements of index options transactions are in cash.

     Index  options  are subject to  substantial  risks,  including  the risk of
imperfect  correlation  between the option price and the value of the underlying
securities  composing the stock index selected and the risk that there might not
be a liquid  secondary  market  for the  option.  Because  the value of an index
option depends upon movements in the level of the index rather than the price of
a  particular  stock,  whether  a ProFund  will  realize a gain or loss from the
purchase or writing  (sale) of options on an index depends upon movements in the
level of stock prices in the stock market  generally  or, in the case of certain
indexes,  in an industry or market  segment,  rather than upon  movements in the
price of a particular stock.  Whether a ProFund will realize a profit or loss by
the use of options on stock indexes will depend on movements in the direction of
the stock market generally or of a particular  industry or market segment.  This
requires  different  skills and  techniques  than are  required  for  predicting
changes  in the price of  individual  stocks.  A ProFund  will not enter into an
option  position  that exposes the ProFund to an  obligation  to another  party,
unless the ProFund either (i) owns an offsetting position in securities or other
options  and/or  (ii)  maintains  with  the  ProFund's   custodian  bank  liquid
instruments  that,  when added to the  premiums  deposited  with  respect to the
option,  are  equal  to the  market  value of the  underlying  stock  index  not
otherwise covered.

     The ProFunds may engage in  transactions  in stock index options  listed on
national  securities  exchanges or traded in the  over-the-counter  market as an
investment  vehicle for the purpose of realizing  their  investment  objectives.
Options on indexes are  settled in cash,  not by  delivery  of  securities.  The
exercising holder of an index option receives, instead of a security, cash equal
to the  difference  between the closing  price of the  securities  index and the
exercise price of the option.

     Some stock index  options are based on a broad market index such as the S&P
500 Index,  the NYSE Composite  Index,  or the AMEX Major Market Index,  or on a
narrower index such as the Philadelphia Stock Exchange  Over-the-Counter  Index.
Options  currently  are traded on the  Chicago  Board of Options  Exchange  (the
"CBOE"), the AMEX, and other exchanges ("Exchanges"). Purchased over-the-counter
options and the cover for written  over-the-counter  options  will be subject to
the 15%  limitation on investment  in illiquid  securities by the ProFunds.  See
"Illiquid Securities."

     Each of the Exchanges  has  established  limitations  governing the maximum
number of call or put  options on the same index  which may be bought or written
(sold) by a single  investor,  whether  acting  alone or in concert  with others
(regardless  of  whether  such  options  are  written  on the same or  different
Exchanges or are held or written on one or more  accounts or through one or more
brokers). Under these limitations,  option positions of all investment companies
advised by the same  investment  adviser  are  combined  for  purposes  of these
limits. Pursuant to these limitations,  an Exchange may order the liquidation of
positions and may impose other sanctions or restrictions.  These position limits
may  restrict  the  number of listed  options  which a ProFund  may buy or sell;
however, the Advisor intends to comply with all limitations.
<PAGE>

OPTIONS ON SECURITIES

     Each ProFund may buy and write (sell) options on securities for the purpose
of realizing its investment  objectives.  By buying a call option, a ProFund has
the right,  in return for a premium  paid during the term of the option,  to buy
the securities  underlying the option at the exercise  price.  By writing a call
option on securities,  a ProFund becomes obligated during the term of the option
to sell the securities underlying the option at the exercise price if the option
is exercised.  By buying a put option,  a ProFund has the right, in return for a
premium paid during the term of the option,  to sell the  securities  underlying
the option at the exercise  price.  By writing a put option,  a ProFund  becomes
obligated  during the term of the option to purchase the  securities  underlying
the option at the exercise price if the option is exercised.  During the term of
the option,  the writer may be assigned an exercise notice by the  broker-dealer
through whom the option was sold.  The exercise  notice would require the writer
to deliver,  in the case of a call,  or take  delivery of, in the case of a put,
the underlying  security against payment of the exercise price.  This obligation
terminates  upon  expiration  of the option,  or at such  earlier  time that the
writer effects a closing  purchase  transaction by purchasing an option covering
the same  underlying  security and having the same exercise price and expiration
date as the one previously  sold. Once an option has been exercised,  the writer
may not execute a closing  purchase  transaction.  To secure the  obligation  to
deliver the  underlying  security in the case of a call option,  the writer of a
call option is required  to deposit in escrow the  underlying  security or other
assets in accordance  with the rules of the Options  Clearing  Corporation  (the
"OCC"), an institution created to interpose itself between buyers and sellers of
options.  The OCC assumes the other side of every purchase and sale  transaction
on an exchange  and, by doing so, gives its guarantee to the  transaction.  When
writing call options on  securities,  a ProFund may cover its position by owning
the  underlying  security  on which the option is  written.  Alternatively,  the
ProFund  may  cover its  position  by  owning a call  option  on the  underlying
security,  on a share for share  basis,  which is  deliverable  under the option
contract at a price no higher than the exercise price of the call option written
by the ProFund or, if higher,  by owning  such call  option and  depositing  and
maintaining in a segregated account cash or liquid instruments equal in value to
the difference between the two exercise prices. In addition, a ProFund may cover
its position by  depositing  and  maintaining  in a  segregated  account cash or
liquid  instruments  equal  in value to the  exercise  price of the call  option
written by the  ProFund.  When a ProFund  writes a put option,  the ProFund will
have and maintain on deposit with its custodian bank cash or liquid  instruments
having a value equal to the exercise value of the option.  The principal  reason
for a ProFund to write call  options on stocks held by the ProFund is to attempt
to  realize,  through the receipt of  premiums,  a greater  return than would be
realized on the underlying securities alone.

     If a ProFund  that  writes an option  wishes  to  terminate  the  ProFund's
obligation, the ProFund may effect a "closing purchase transaction." The ProFund
accomplishes  this  by  buying  an  option  of the  same  series  as the  option
previously  written  by the  ProFund.  The  effect of the  purchase  is that the
writer's position will be canceled by the OCC. However,  a writer may not effect
a  closing  purchase  transaction  after the  writer  has been  notified  of the
exercise of an option.  Likewise, a ProFund which is the holder of an option may
liquidate  its position by effecting a "closing sale  transaction."  The ProFund
accomplishes  this by  selling  an  option  of the  same  series  as the  option
previously purchased by the ProFund. There is no guarantee that either a closing
purchase  or a closing  sale  transaction  can be  effected.  If any call or put
option is not  exercised  or sold,  the  option  will  become  worthless  on its
expiration date. A ProFund will realize a gain (or a loss) on a closing purchase
transaction  with  respect to a call or a put option  previously  written by the
ProFund if the premium,  plus commission  costs, paid by the ProFund to purchase
the call or put option to close the  transaction  is less (or greater)  than the
premium,  less commission costs, received by the ProFund on the sale of the call
or the put option.  The ProFund also will realize a gain if a call or put option
which the ProFund  has written  lapses  unexercised,  because the ProFund  would
retain the premium.

     Although  certain  securities  exchanges  attempt to  provide  continuously
liquid  markets in which  holders  and  writers  of options  can close out their
positions at any time prior to the expiration of the option, no assurance can be
given  that a  market  will  exist  at all  times  for all  outstanding  options
purchased or sold by a ProFund. If an options market were to become unavailable,
the ProFund would be unable to realize its profits or limit its losses until the
ProFund could exercise  options it holds, and the ProFund would remain obligated
until options it wrote were  exercised or expired.  Reasons for the absence of a
liquid secondary  market on an exchange include the following:  (i) there may be
insufficient  trading  interest in certain  options;  (ii)  restrictions  may be
imposed by an exchange on opening or closing transactions or both; (iii) trading
halts,  suspensions  or  other  restrictions  may be  imposed  with  respect  to
particular   classes  or  series  of  options;   (iv)   unusual  or   unforeseen
circumstances may interrupt normal operations on an exchange; (v) the facilities
of an exchange  or the OCC may not at all times be  adequate  to handle  current
trading  volume;  or (vi) one or more  exchanges  could,  for  economic or other
reasons,  decide or be compelled at some future date to discontinue  the trading
of options (or a  particular  class or series of options)  would cease to exist,
although outstanding options on that exchange that had been issued by the OCC as
a result  of  trades  on that  exchange  would  continue  to be  exercisable  in
accordance with their terms.
<PAGE>

SWAP AGREEMENTS

     The ProFunds may enter into equity index or interest  rate swap  agreements
for purposes of  attempting to gain exposure to the stocks making up an index of
securities in a market without actually  purchasing those stocks,  or to hedge a
position.  Swap  agreements  are two-party  contracts  entered into primarily by
institutional investors for periods ranging from a day to more than one year. In
a standard  "swap"  transaction,  two parties  agree to exchange the returns (or
differentials in rates of return) earned or realized on particular predetermined
investments  or  instruments.  The gross  returns to be  exchanged  or "swapped"
between the parties are  calculated  with respect to a "notional  amount," i.e.,
the return on or increase in value of a particular  dollar amount  invested in a
"basket" of securities representing a particular index. Forms of swap agreements
include  interest  rate caps,  under which,  in return for a premium,  one party
agrees to make payments to the other to the extent that interest  rates exceed a
specified  rate, or "cap";  interest rate floors,  under which,  in return for a
premium,  one party  agrees to make  payments  to the other to the  extent  that
interest  rates fall below a specified  level,  or "floor";  and  interest  rate
collars,  under which a party sells a cap and purchases a floor or vice versa in
an attempt to protect itself against  interest rate  movements  exceeding  given
minimum or maximum levels.

     Most swap agreements entered into by the ProFunds calculate the obligations
of the parties to the  agreement  on a "net  basis."  Consequently,  a ProFund's
current  obligations  (or rights) under a swap agreement will generally be equal
only to the net amount to be paid or received  under the agreement  based on the
relative  values of the positions  held by each party to the agreement (the "net
amount").

     A ProFund's  current  obligations  under a swap  agreement  will be accrued
daily  (offset  against any amounts  owing to the  ProFund)  and any accrued but
unpaid net amounts owed to a swap  counterparty  will be covered by  segregating
assets  determined to be liquid.  Obligations  under swap  agreements so covered
will not be  construed  to be "senior  securities"  for  purposes of a ProFund's
investment restriction concerning senior securities.  Because they are two party
contracts  and  because  they may have terms of greater  than seven  days,  swap
agreements may be considered to be illiquid for the ProFund illiquid  investment
limitations. A ProFund will not enter into any swap agreement unless the Advisor
believes  that the other party to the  transaction  is  creditworthy.  A ProFund
bears  the  risk of loss of the  amount  expected  to be  received  under a swap
agreement  in the  event  of  the  default  or  bankruptcy  of a swap  agreement
counterparty.

     Each ProFund may enter into swap  agreements to invest in a market  without
owning or taking physical custody of securities in circumstances in which direct
investment is restricted  for legal reasons or is otherwise  impracticable.  The
counterparty to any swap agreement will typically be a bank,  investment banking
firm or broker/dealer.  The counterparty will generally agree to pay the ProFund
the amount,  if any, by which the notional  amount of the swap  agreement  would
have increased in value had it been invested in the particular stocks,  plus the
dividends that would have been received on those stocks.  The ProFund will agree
to pay to the counterparty a floating rate of interest on the notional amount of
the swap agreement plus the amount,  if any, by which the notional  amount would
have  decreased  in value had it been  invested in such stocks.  Therefore,  the
return to the  ProFund on any swap  agreement  should be the gain or loss on the
notional  amount  plus  dividends  on the stocks less the  interest  paid by the
ProFund on the notional amount.

     Swap agreements  typically are settled on a net basis, which means that the
two payment streams are netted out, with the ProFund receiving or paying, as the
case may be, only the net amount of the two  payments.  Payments  may be made at
the  conclusion  of a swap  agreement  or  periodically  during  its term.  Swap
agreements do not involve the delivery of securities or other underlying assets.
Accordingly,  the risk of loss with respect to swap agreements is limited to the
net amount of payments that a ProFund is contractually obligated to make. If the
other party to a swap agreement  defaults,  a ProFund's risk of loss consists of
the net amount of  payments  that such  ProFund  is  contractually  entitled  to
receive,  if  any.  The  net  amount  of the  excess,  if  any,  of a  ProFund's
obligations  over its  entitlements  with  respect to each  equity  swap will be
accrued  on a daily  basis and an amount  of cash or  liquid  assets,  having an
aggregate  net  asset  value  at  least  equal to such  accrued  excess  will be
maintained in a segregated account by a ProFund's  custodian.  Inasmuch as these
transactions  are entered into for hedging  purposes or are offset by segregated
cash of liquid  assets,  as permitted by applicable  law, the ProFunds and their
Advisor believe that  transactions do not constitute senior securities under the
1940 Act and,  accordingly,  will not treat them as being subject to a ProFund's
borrowing restrictions.
<PAGE>

     The swap market has grown substantially in recent years with a large number
of banks and  investment  banking firms acting both as principals  and as agents
utilizing  standardized  swap  documentation.  As a result,  the swap market has
become  relatively  liquid in  comparison  with the  markets  for other  similar
instruments which are traded in the over-the-counter  market. The Advisor, under
the  supervision of the Board of Trustees,  are  responsible for determining and
monitoring the liquidity of the ProFund transactions in swap agreements.

     The use of equity swaps is a highly  specialized  activity  which  involves
investment  techniques and risks  different from those  associated with ordinary
portfolio securities transactions.

AMERICAN DEPOSITORY RECEIPTS

     For many foreign securities, U.S. dollar denominated ADRs, which are traded
in the United  States on exchanges or  over-the-counter,  are issued by domestic
banks.  ADRs  represent  the right to  receive  securities  of  foreign  issuers
deposited in a domestic bank or a correspondent  bank. ADRs do not eliminate all
the risk inherent in investing in the securities of foreign issuers. However, by
investing in ADRs rather than directly in foreign  issuers' stock, a ProFund can
avoid currency risks during the settlement period for either purchase or sales.

     In general,  there is a large,  liquid market in the United States for many
ADRs. The information available for ADRs is subject to the accounting,  auditing
and financial  reporting  standards of the domestic  market or exchange on which
they are traded,  which  standards are more uniform and more exacting than those
to which many foreign  issuers may be subject.  Certain  ADRs,  typically  those
denominated  as  unsponsored,  require the  holders  thereof to bear most of the
costs of such  facilities,  while issuers of sponsored  facilities  normally pay
more of the costs thereof.  The depository of an unsponsored facility frequently
is under no obligation to distribute  shareholder  communications  received from
the issuer of the  deposited  securities or to pass through the voting rights to
facility  holders  with  respect  to  the  deposited  securities,   whereas  the
depository   of  a  sponsored   facility   typically   distributes   shareholder
communications and passes through the voting rights.

     A ProFund may invest in both sponsored and  unsponsored  ADRs.  Unsponsored
ADR programs are  organized  independently  and without the  cooperation  of the
issuer  of  the  underlying  securities.  As  a  result,  available  information
concerning  the issuers  may not be as current as for  sponsored  ADRs,  and the
prices of  unsponsored  depository  receipts may be more  volatile  than if such
instruments were sponsored by the issuer.

U.S. GOVERNMENT SECURITIES

     Each ProFund also may invest in U.S.  government  securities  in pursuit of
its  investment  objectives,  as "cover"  for the  investment  techniques  these
ProFunds employ, or for liquidity purposes.

     Yields on U.S. government securities are dependent on a variety of factors,
including the general  conditions  of the money and bond markets,  the size of a
particular  offering,  and the maturity of the obligation.  Debt securities with
longer  maturities  tend to produce  higher yields and are generally  subject to
potentially greater capital  appreciation and depreciation than obligations with
shorter  maturities  and  lower  yields.  The  market  value of U.S.  government
securities  generally varies inversely with changes in market interest rates. An
increase in interest rates,  therefore,  would generally reduce the market value
of a ProFund's  portfolio  investments in U.S.  government  securities,  while a
decline in  interest  rates  would  generally  increase  the  market  value of a
ProFund's portfolio investments in these securities.
<PAGE>

     U.S.  government  securities  include U.S. Treasury  securities,  which are
backed by the full faith and credit of the U.S.  Treasury  and which differ only
in their interest rates, maturities,  and times of issuance. U.S. Treasury bills
have initial  maturities of one year or less;  U.S.  Treasury notes have initial
maturities of one to ten years;  and U.S.  Treasury bonds generally have initial
maturities of greater than ten years.  Certain U.S.  government  securities  are
issued or guaranteed  by agencies or  instrumentalities  of the U.S.  government
including,  but not  limited  to,  obligations  of U.S.  government  agencies or
instrumentalities,  such  as the  Federal  National  Mortgage  Association,  the
Government National Mortgage Association, the Small Business Administration, the
Federal  Farm  Credit  Administration,  the Federal  Home Loan Banks,  Banks for
Cooperatives  (including  the Central Bank for  Cooperatives),  the Federal Land
Banks, the Federal  Intermediate  Credit Banks, the Tennessee Valley  Authority,
the Export-Import Bank of the United States,  the Commodity Credit  Corporation,
the Federal  Financing  Bank,  the Student Loan Marketing  Association,  and the
National Credit Union  Administration.  Some obligations issued or guaranteed by
U.S.  government  agencies  and  instrumentalities,   including,   for  example,
Government  National  Mortgage  Association   pass-through   certificates,   are
supported by the full faith and credit of the U.S.  Treasury.  Other obligations
issued by or guaranteed by Federal agencies,  such as those securities issued by
the Federal National  Mortgage  Association,  are supported by the discretionary
authority of the U.S.  government to purchase certain obligations of the federal
agency,  while other  obligations  issued by or guaranteed by federal  agencies,
such as those of the Federal Home Loan Banks,  are supported by the right of the
issuer to borrow  from the U.S.  Treasury.  While the U.S.  government  provides
financial  support  to  such  U.S.  government-sponsored  Federal  agencies,  no
assurance  can be given that the U.S.  government  will always do so,  since the
U.S.  Government  is not so  obligated  by law.  U.S.  Treasury  notes and bonds
typically pay coupon interest semi-annually and repay the principal at maturity.

REPURCHASE AGREEMENTS

     Each of the ProFunds may enter into  repurchase  agreements  with financial
institutions.  Under a repurchase agreement, a ProFund purchases a debt security
and simultaneously  agrees to sell the security back to the seller at a mutually
agreed-upon  future price and date,  normally  one day or a few days later.  The
resale price is greater  than the  purchase  price,  reflecting  an  agreed-upon
market interest rate during the purchaser's holding period. While the maturities
of the  underlying  securities in repurchase  transactions  may be more than one
year, the term of each  repurchase  agreement will always be less than one year.
The ProFunds follow certain  procedures  designed to minimize the risks inherent
in such agreements.  These procedures include effecting repurchase  transactions
only with large,  well-capitalized and well-established  financial  institutions
whose condition will be continually  monitored by the Advisor. In addition,  the
value of the collateral  underlying  the repurchase  agreement will always be at
least equal to the repurchase  price,  including any accrued  interest earned on
the repurchase  agreement.  In the event of a default or bankruptcy by a selling
financial  institution,  a ProFund will seek to liquidate such collateral  which
could involve  certain costs or delays and, to the extent that proceeds from any
sale  upon a  default  of the  obligation  to  repurchase  were  less  than  the
repurchase price, the ProFund could suffer a loss. A ProFund also may experience
difficulties  and incur certain costs in exercising its rights to the collateral
and may lose the interest the ProFund  expected to receive under the  repurchase
agreement. Repurchase agreements usually are for short periods, such as one week
or less,  but may be longer.  It is the current  policy of the  ProFunds  not to
invest in repurchase agreements that do not mature within seven days if any such
investment,  together with any other liquid assets held by the ProFund,  amounts
to more  than  15% of its  total  net  assets.  The  investments  of each of the
ProFunds in repurchase  agreements at times may be substantial when, in the view
of the Advisor,  liquidity,  investment,  regulatory, or other considerations so
warrant.
<PAGE>

CASH RESERVES

     To  seek  its  investment  objective,  as a  cash  reserve,  for  liquidity
purposes, or as "cover" for positions it has taken, each ProFund may temporarily
invest all or part of the ProFund's  assets in cash or cash  equivalents,  which
include,  but are not limited to,  short-term  money  market  instruments,  U.S.
government  securities,   certificates  of  deposit,  bankers  acceptances,   or
repurchase agreements secured by U.S.
government securities.

REVERSE REPURCHASE AGREEMENTS

     The  ProFunds  may use  reverse  repurchase  agreements  as  part of  their
investment strategies.  Reverse repurchase agreements involve sales by a ProFund
of portfolio assets  concurrently with an agreement by the ProFund to repurchase
the same assets at a later date at a fixed price. Generally,  the effect of such
a  transaction  is that the ProFund can recover all or most of the cash invested
in the portfolio  securities  involved during the term of the reverse repurchase
agreement, while the ProFund will be able to keep the interest income associated
with those portfolio securities.  Such transactions are advantageous only if the
interest cost to the ProFund of the reverse repurchase  transaction is less than
the  cost of  obtaining  the  cash  otherwise.  Opportunities  to  achieve  this
advantage  may not  always  be  available,  and the  ProFunds  intend to use the
reverse repurchase technique only when it will be to a ProFund's advantage to do
so. A ProFund will  establish a segregated  account with its  custodian  bank in
which the ProFund will maintain cash or liquid instruments equal in value to the
ProFund's obligations in respect of reverse repurchase agreements.

BORROWING

     The ProFunds may borrow money for cash  management  purposes or  investment
purposes.   Each  of  the  ProFunds  may  also  enter  into  reverse  repurchase
agreements,  which  may  be  viewed  as a  form  of  borrowing,  with  financial
institutions.   However,  to  the  extent  a  ProFund  "covers"  its  repurchase
obligations  as  described  above  in  "Reverse  Repurchase   Agreements,"  such
agreement will not be considered to be a "senior security" and, therefore,  will
not be subject to the 300% asset coverage  requirement  otherwise  applicable to
borrowings by the ProFunds.  Borrowing  for  investment is known as  leveraging.
Leveraging  investments,  by purchasing  securities  with borrowed  money,  is a
speculative  technique  which  increases  investment  risk,  but also  increases
investment  opportunity.  Since  substantially  all of a  ProFund's  assets will
fluctuate in value, whereas the interest obligations on borrowings may be fixed,
the net  asset  value  per  share of the  ProFund  will  increase  more when the
ProFund's  portfolio  assets  increase  in  value  and  decrease  more  when the
ProFund's  portfolio  assets decrease in value than would otherwise be the case.
Moreover,  interest costs on borrowings may fluctuate with changing market rates
of  interest  and may  partially  offset or exceed the  returns on the  borrowed
funds.  Under  adverse  conditions,  a  ProFund  might  have to  sell  portfolio
securities  to meet  interest or  principal  payments at a time when  investment
considerations would not favor such sales.

     As  required  by the 1940 Act, a ProFund  must  maintain  continuous  asset
coverage (total assets,  including  assets  acquired with borrowed  funds,  less
liabilities  exclusive of borrowings) of 300% of all amounts borrowed. If at any
time the value of the  ProFund's  assets  should fail to meet this 300% coverage
test, the ProFund, within three days (not including Sundays and holidays),  will
reduce the amount of the ProFund's  borrowings  to the extent  necessary to meet
this 300% coverage.  Maintenance of this percentage limitation may result in the
sale of portfolio securities at a time when investment  considerations otherwise
indicate  that  it  would  be  disadvantageous  to do  so.  In  addition  to the
foregoing,  the  ProFunds  are  authorized  to  borrow  money  from a bank  as a
temporary  measure for  extraordinary  or  emergency  purposes in amounts not in
excess of 5% of the value of the ProFund's  total assets.  This borrowing is not
subject to the  foregoing  300% asset  coverage  requirement.  The  ProFunds are
authorized to pledge  portfolio  securities as the Advisor deems  appropriate in
connection with any borrowings.

LENDING OF PORTFOLIO SECURITIES

     Each of the ProFunds may lend its portfolio securities to brokers, dealers,
and  financial  institutions,  provided  that cash equal to at least 100% of the
market value of the  securities  loaned is  deposited  by the borrower  with the
ProFund and is maintained each business day in a segregated  account pursuant to
applicable regulations. While such securities are on loan, the borrower will pay
the lending ProFund any income accruing thereon,  and the ProFund may invest the
cash collateral in portfolio  securities,  thereby earning  additional income. A
ProFund  will not lend  more than 33 1/3% of the  value of the  ProFund's  total
assets.  Loans would be subject to  termination  by the lending  ProFund on four
business  days'  notice,  or by the  borrower  on  one  day's  notice.  Borrowed
securities must be returned when the loan is terminated. Any gain or loss in the
market price of the borrowed securities which occurs during the term of the loan
inures  to the  lending  ProFund.  There  may be risks  of  delay  in  receiving
additional  collateral  or risks of delay in recovery of the  securities or even
loss of rights in the securities lent should the borrower of the securities fail
financially.   A  lending  ProFund  may  pay  reasonable   finders,   borrowers,
administrative, and custodial fees in connection with a loan.
<PAGE>

WHEN-ISSUED AND DELAYED-DELIVERY SECURITIES

     Each ProFund,  from time to time, in the ordinary  course of business,  may
purchase securities on a when-issued or delayed-delivery  basis (i.e.,  delivery
and  payment  can take place  between a month and 120 days after the date of the
transaction). These securities are subject to market fluctuation and no interest
accrues to the  purchaser  during this period.  At the time a ProFund  makes the
commitment to purchase  securities on a when-issued or  delayed-delivery  basis,
the ProFund will record the transaction and thereafter  reflect the value of the
securities, each day, in determining the ProFund's net asset value. Each ProFund
will not purchase securities on a when-issued or delayed-delivery basis if, as a
result,  more than 15% of the ProFund's net assets would be so invested.  At the
time of delivery of the  securities,  the value of the securities may be more or
less than the purchase price.

     The  Trust  will also  establish  a  segregated  account  with the  Trust's
custodian bank in which the ProFunds will maintain liquid  instruments  equal to
or greater in value than the ProFund's purchase commitments for such when-issued
or delayed-delivery  securities,  or the Trust does not believe that a ProFund's
net asset value or income will be adversely  affected by the ProFund's  purchase
of securities on a when-issued or delayed delivery basis.

INVESTMENTS IN OTHER INVESTMENT COMPANIES

     The ProFunds may invest in the securities of other investment  companies to
the extent that such an investment  would be consistent with the requirements of
the 1940 Act. If a ProFund  invests in, and, thus, is a shareholder  of, another
investment  company,  the  ProFund's   shareholders  will  indirectly  bear  the
ProFund's  proportionate  share  of the  fees and  expenses  paid by such  other
investment company,  including advisory fees, in addition to both the management
fees payable directly by the ProFund to the ProFund's own investment adviser and
the other  expenses  that the  ProFund  bears  directly in  connection  with the
ProFund's own operations.

ILLIQUID SECURITIES

     While none of the ProFunds  anticipates  doing so, each of the ProFunds may
purchase  illiquid  securities,   including  securities  that  are  not  readily
marketable and  securities  that are not  registered  ("restricted  securities")
under the Securities Act of 1933, as amended (the "1933 Act"),  but which can be
sold to  qualified  institutional  buyers  under  Rule 144A of the 1933  Act.  A
ProFund  will not invest more than 15% of the  ProFund's  net assets in illiquid
securities.  The term "illiquid  securities"  for this purpose means  securities
that cannot be disposed of within seven days in the ordinary  course of business
at  approximately  the amount at which the  ProFund  has valued the  securities.
Under  the  current  guidelines  of the  staff of the  Securities  and  Exchange
Commission  (the  "Commission"),  illiquid  securities  also are  considered  to
include, among other securities,  purchased  over-the-counter  options,  certain
cover for  over-the-counter  options,  repurchase  agreements with maturities in
excess of seven days,  and certain  securities  whose  disposition is restricted
under the Federal  securities laws. The ProFund may not be able to sell illiquid
securities when the Advisor  considers it desirable to do so or may have to sell
such  securities  at a price that is lower than the price that could be obtained
if the securities were more liquid. In addition, the sale of illiquid securities
also may require more time and may result in higher  dealer  discounts and other
selling  expenses  than  does the  sale of  securities  that  are not  illiquid.
Illiquid   securities   also  may  be  more   difficult  to  value  due  to  the
unavailability   of  reliable  market   quotations  for  such  securities,   and
investments  in  illiquid  securities  may have an  adverse  impact on net asset
value.
<PAGE>

     Institutional  markets for restricted securities have developed as a result
of the  promulgation  of Rule 144A  under the 1933 Act,  which  provides  a safe
harbor  from  1933  Act  registration   requirements  for  qualifying  sales  to
institutional  investors.  When  Rule  144A  restricted  securities  present  an
attractive  investment  opportunity  and otherwise  meet selection  criteria,  a
ProFund may make such  investments.  Whether or not such securities are illiquid
depends on the market that exists for the  particular  security.  The Commission
staff  has  taken  the  position  that the  liquidity  of Rule  144A  restricted
securities  is a question  of fact for a board of trustees  to  determine,  such
determination  to be based on a consideration of the  readily-available  trading
markets  and the  review of any  contractual  restrictions.  The staff  also has
acknowledged  that, while a board of trustees  retains ultimate  responsibility,
trustees  may  delegate  this  function to an  investment  adviser.  Trustees of
ProFunds have delegated this  responsibility  for  determining  the liquidity of
Rule 144A  restricted  securities  which may be  invested in by a ProFund to the
Advisor. It is not possible to predict with assurance exactly how the market for
Rule 144A restricted  securities or any other security will develop.  A security
which when purchased  enjoyed a fair degree of  marketability  may  subsequently
become  illiquid and,  accordingly,  a security which was deemed to be liquid at
the  time of  acquisition  may  subsequently  become  illiquid.  In such  event,
appropriate  remedies will be considered to minimize the effect on the ProFund's
liquidity.

PORTFOLIO TURNOVER

     The  nature  of  the  ProFunds   will  cause  the  ProFunds  to  experience
substantial  portfolio  turnover.  A higher portfolio turnover rate would likely
involve  correspondingly greater brokerage commissions and transaction and other
expenses  which  would  be borne  by the  ProFunds.  In  addition,  a  ProFund's
portfolio  turnover  level may  adversely  affect the  ability of the ProFund to
achieve its investment objective. Because each ProFund's portfolio turnover rate
to a great extent will depend on the purchase, redemption, and exchange activity
of the  ProFund's  investors,  it is  difficult to estimate  what the  ProFund's
actual turnover rate will be in the future. "Portfolio Turnover Rate" is defined
under the rules of the  Commission as the value of the  securities  purchased or
securities   sold,   excluding  all  securities  whose  maturities  at  time  of
acquisition were one year or less,  divided by the average monthly value of such
securities  owned during the year.  Based on this  definition,  instruments with
remaining  maturities of less than one year are excluded from the calculation of
portfolio turnover rate.  Instruments excluded from the calculation of portfolio
turnover  generally would include the futures  contracts and option contracts in
which the  ProFunds  invest  since such  contracts  generally  have a  remaining
maturity  of less than one  year.  Pursuant  to the  formula  prescribed  by the
Commission,  the portfolio  turnover rate for each ProFund is calculated without
regard  to  instruments,  including  options  and  futures  contracts,  having a
maturity of less than one year.  Each ProFund  expects to typically hold many of
its investments in short-term options and futures contracts,  which,  therefore,
are excluded for purposes of computing portfolio turnover.

SPECIAL CONSIDERATIONS

     To the extent  discussed above and in the Prospectus,  the ProFunds present
certain risks, some of which are further described below.

     LEVERAGE.  Each ProFund intends to use leveraged  investment  techniques in
pursuing their investment objectives. Utilization of leveraging involves special
risks and should be considered to be speculative. Leverage exists when a ProFund
achieves  the right to a return on a capital  base that  exceeds  the amount the
ProFund has  invested.  Leverage  creates  the  potential  for greater  gains to
shareholders of the ProFunds during favorable market  conditions and the risk of
magnified losses during adverse market conditions.  Leverage should cause higher
volatility of the net asset values of a ProFund's  shares.  Leverage may involve
the  creation  of a  liability  that does not entail any  interest  costs or the
creation  of a liability  that  requires a ProFund to pay  interest  which would
decrease the ProFund's  total return to  shareholders.  If the ProFunds  achieve
their  investment  objectives,  during adverse market  conditions,  shareholders
should experience a loss of approximately one and one-half times the amount they
would have incurred had these ProFunds not been leveraged.
<PAGE>

     NON-DIVERSIFIED  STATUS. Each ProFund is a  "non-diversified"  series. Each
ProFund is considered  "non-diversified" because a relatively high percentage of
the ProFund's  assets may be invested in the  securities of a limited  number of
issuers,  primarily  within the same  economic  sector.  A  ProFund's  portfolio
securities,   therefore,  may  be  more  susceptible  to  any  single  economic,
political,  or regulatory  occurrence  than the  portfolio  securities of a more
diversified    investment    company.   A   ProFund's    classification   as   a
"non-diversified"  investment company means that the proportion of the ProFund's
assets that may be invested in the  securities of a single issuer is not limited
by the  1940  Act.  Each  ProFund,  however,  intends  to seek to  qualify  as a
"regulated  investment company" for purposes of the Internal Revenue Code, which
imposes diversification  requirements on these ProFund that are less restrictive
than the requirements applicable to the "diversified" investment companies under
the 1940 Act.

                             INVESTMENT RESTRICTIONS

     The ProFunds have adopted  certain  investment  restrictions as fundamental
policies  which  cannot be changed  without  the  approval  of the  holders of a
"majority" of the  outstanding  shares of a ProFund,  as that term is defined in
the 1940 Act. The term  "majority"  is defined in the 1940 Act as the lesser of:
(i)  67%  or  more  of  the  shares  of  the  series  present  at a  meeting  of
shareholders,  if the holders of more than 50% of the outstanding  shares of the
ProFund  are  present  or  represented  by  proxy;  or (ii) more than 50% of the
outstanding  shares of the series.  (All policies of a ProFund not  specifically
identified in this  Statement of  Additional  Information  or the  Prospectus as
fundamental may be changed  without a vote of the  shareholders of the ProFund.)
For purposes of the following  limitations,  all  percentage  limitations  apply
immediately after a purchase or initial investment.

     A ProFund may not:

1.  Purchase  or sell real  estate,  except  that,  to the extent  permitted  by
applicable  law, the ProFunds may invest in  securities  directly or  indirectly
secured by real estate or interests  therein or issued by companies  that invest
in real estate or interests therein, including real estate investment trusts.

2. Make loans to other persons, except that the acquisition of bonds, debentures
or other  corporate debt  securities  and investment in government  obligations,
commercial paper,  pass-through  instruments,  certificates of deposit, bankers'
acceptances  and  repurchase  agreements and purchase and sale contracts and any
similar  instruments  shall not be deemed to be the making of a loan, and except
further that the ProFund may lend its  portfolio  securities,  provided that the
lending of portfolio  securities may be made only in accordance  with applicable
law and the  guidelines  set  forth  in the  Prospectus  and this  Statement  of
Additional Information, as they may be amended from time to time.

3. Issue senior securities to the extent such issuance would violate  applicable
law.

4. Borrow  money,  except that the ProFund (i) may borrow from banks (as defined
in the  Investment  Company  Act of 1940) in  amounts up to 33 1/3% of its total
assets  (including the amount  borrowed),  (ii) may, to the extent  permitted by
applicable  law, borrow up to an additional 5% of its total assets for temporary
purposes,  (iii) may obtain such  short-term  credit as may be necessary for the
clearance of  purchases  and sales of  portfolio  securities,  (iv) may purchase
securities on margin to the extent permitted by applicable law and (v) may enter
into reverse repurchase agreements.  The ProFund may not pledge its assets other
than to secure such  borrowings  or, to the extent  permitted  by the  ProFund's
investment  policies  as set  forth  in the  Prospectus  and this  Statement  of
Additional Information,  as they may be amended from time to time, in connection
with hedging  transactions,  short  sales,  when-issued  and forward  commitment
transactions and similar investment strategies.

5.  Underwrite  securities  of other  issuers,  except  insofar  as the  ProFund
technically  may be deemed an  underwriter  under the Securities Act of 1933, as
amended, in selling portfolio securities.

6.  Purchase or sell  commodities  or  contracts on  commodities,  except to the
extent the ProFund may do so in accordance with applicable law and the ProFund's
Prospectus and Statement of Additional Information,  as they may be amended from
time to time.
<PAGE>

         Each ProFund will  concentrate  its  investment  in the  securities  of
companies engaged in a single industry or group of industries in accordance with
its investment  objective and policies as disclosed in the ProFunds'  Prospectus
and  Statement of  Additional  Information,  as they may be revised from time to
time.

                        DETERMINATION OF NET ASSET VALUE

     The net asset values of the shares of the ProFunds are determined as of the
close of business of the NYSE  (ordinarily,  4:00 p.m. Eastern Time) on each day
the NYSE and the Chicago Mercantile  Exchange ("CME") are open for business.  To
the extent that portfolio securities of a ProFund are traded in other markets on
days when the ProFund's principal trading market(s) is closed, the ProFund's net
asset  value may be affected  on days when  investors  do not have access to the
ProFund to purchase or redeem shares.

     The net asset  value of  shares  of a  ProFund  serves as the basis for the
purchase and  redemption  price of the class of shares.  The net asset value per
share of a ProFund is  calculated  by dividing the market value of the ProFund's
assets,  less all  liabilities  attributed  to the  ProFund,  by the  number  of
outstanding  shares  of the  ProFund.  If  market  quotations  are  not  readily
available,  a security will be valued at fair value by the Trustees of the Trust
or by the Advisor using methods  established  or ratified by the Trustees of the
Trust.

     The  securities in the portfolio of a ProFund,  except as otherwise  noted,
that are  listed or traded on a stock  exchange,  are valued on the basis of the
last sale on that day or, lacking any sales, at a price that is the mean between
the  closing  bid and asked  prices.  Other  securities  that are  traded on the
over-the-counter  markets are priced using NASDAQ, which provides information on
bid and asked prices quoted by major dealers in such stocks.  Bonds,  other than
convertible  bonds, are valued using a third-party  pricing system.  Convertible
bonds are valued  using this  pricing  system only on days when there is no sale
reported.  Short-term  debt securities are valued using this pricing system only
on days when there is no sale reported. Short-term debt securities are valued at
amortized cost, which approximates  market value. When market quotations are not
readily  available,  securities  and other  assets  are  valued at fair value as
determined in good faith under  procedures  established by and under the general
supervision and responsibility of the ProFunds' Board of Trustees.

     Futures  contracts  maintained  by  ProFunds  are valued at their last sale
price prior to the valuation time.  Options on futures  contracts  generally are
valued  at fair  value as  determined  with  reference  to  established  futures
exchanges.  Options on securities and indices  purchased by a ProFund are valued
at their last sale price prior to the  valuation  time or at fair value.  In the
event of a trading halt that closes the NYSE early,  futures  contracts  will be
valued on the  basis of  settlement  prices on  futures  exchanges,  options  on
futures  will be valued  at fair  value as  determined  with  reference  to such
settlement prices, and options on securities and indices will be valued at their
last sale price prior to the trading halt or at fair value.

     In the event a trading  halt closes a futures  exchange for a given day and
that  closure  occurs  prior  to the  close  of the  NYSE on that  day,  futures
positions  traded on such  exchange  and held by a ProFund will be valued on the
basis of the day's settlement prices on the futures exchange or fair value.

                      PORTFOLIO TRANSACTIONS AND BROKERAGE

     Subject  to  the  general  supervision  by the  Trustees,  the  Advisor  is
responsible  for decisions to buy and sell  securities for each of the ProFunds,
the  selection  of  brokers  and  dealers to effect  the  transactions,  and the
negotiation  of  brokerage  commissions,  if any.  The Advisor  expects that the
ProFunds may execute brokerage or other agency  transactions  through registered
broker-dealers,  for  a  commission,  in  conformity  with  the  1940  Act,  the
Securities  Exchange  Act of 1934,  as  amended,  and the rules and  regulations
thereunder.  The  Advisor  may  serve as an  investment  manager  to a number of
clients, including other investment companies. It is the practice of the Advisor
to cause purchase and sale  transactions  to be allocated among the ProFunds and
others  whose  assets the Advisor  manages in such  manner as the Advisor  deems
equitable. The main factors considered by the Advisor in making such allocations
among the ProFunds and other client  accounts of the Advisor are the  respective
investment  objectives,  the relative size of portfolio  holdings of the same or
comparable  securities,  the  availability of cash for  investment,  the size of
investment  commitments  generally  held,  and  the  opinions  of the  person(s)
responsible,  if any, for managing the  portfolios of the ProFunds and the other
client accounts.
<PAGE>

     The policy of each ProFund regarding  purchases and sales of securities for
a ProFund's  portfolio is that primary  consideration will be given to obtaining
the most favorable prices and efficient  executions of transactions.  Consistent
with this policy, when securities transactions are effected on a stock exchange,
each  ProFund's  policy  is to pay  commissions  which are  considered  fair and
reasonable without necessarily  determining that the lowest possible commissions
are paid in all  circumstances.  Each ProFund believes that a requirement always
to seek the lowest  possible  commission cost could impede  effective  portfolio
management  and  preclude  the  ProFund and the  Advisor  from  obtaining a high
quality  of  brokerage  and  research  services.  In seeking  to  determine  the
reasonableness  of brokerage  commissions paid in any  transaction,  the Advisor
relies upon its experience and knowledge regarding commissions generally charged
by various  brokers and on its judgment in evaluating the brokerage and research
services received from the broker effecting the transaction. Such determinations
are necessarily subjective and imprecise, as in most cases an exact dollar value
for those services is not ascertainable.

     Purchases and sales of U.S.  government  securities are normally transacted
through  issuers,  underwriters or major dealers in U.S.  government  securities
acting  as  principals.  Such  transactions  are made on a net  basis and do not
involve payment of brokerage commissions.  The cost of securities purchased from
an  underwriter  usually  includes  a  commission  paid  by  the  issuer  to the
underwriters;  transactions with dealers normally reflect the spread between bid
and asked prices.

     In  seeking  to  implement  a  ProFund's  policies,   the  Advisor  effects
transactions with those brokers and dealers who the Advisor believes provide the
most favorable prices and are capable of providing efficient executions.  If the
Advisor  believes such prices and executions  are obtainable  from more than one
broker or dealer,  the  Advisor  may give  consideration  to  placing  portfolio
transactions  with those brokers and dealers who also furnish research and other
services to the ProFund or the Advisor.  Such services may include,  but are not
limited to, any one or more of the following: information as to the availability
of  securities  for  purchase or sale;  statistical  or factual  information  or
opinions pertaining to investment;  wire services; and appraisals or evaluations
of  portfolio  securities.  If  the  broker-dealer  providing  these  additional
services is acting as a principal for its own account,  no commissions  would be
payable.  If the  broker-dealer is not a principal,  a higher  commission may be
justified, at the determination of the Advisor, for the additional services.

     The  information  and  services  received by the Advisor  from  brokers and
dealers may be of benefit to the Advisor in the  management  of accounts of some
of the  Advisor's  other  clients  and may not in all  cases  benefit  a ProFund
directly.  While the  receipt  of such  information  and  services  is useful in
varying  degrees and would  generally  reduce the amount of research or services
otherwise  performed by the Advisor and thereby  reduce the Advisor's  expenses,
this  information  and  these  services  are of  indeterminable  value  and  the
management  fee paid to the  Advisor is not  reduced  by any amount  that may be
attributable to the value of such information and services.

                             MANAGEMENT OF PROFUNDS

     The Board of Trustees is  responsible  for the general  supervision  of the
Trust's   business.   The   day-to-day   operations   of  the   Trust   are  the
responsibilities of the Trust's officers.  The names and addresses (and ages) of
the Trustees of the Trust,  the  officers of the Trust,  and the officers of the
Advisor,  together with information as to their principal  business  occupations
during  the  past  five  years,  are set  forth  below.  Fees and  expenses  for
non-interested  Trustees  will  be  paid  by the  Trust;  Trustee  expenses  for
interested Trustees will be paid by the Advisor.

TRUSTEES AND OFFICERS OF PROFUNDS

     MICHAEL L. SAPIR* (birthdate:  May 19, 1958). Currently:  Trustee, Chairman
and Chief Executive Officer of ProFunds; Chairman and Chief Executive Officer of
the Advisor.  Formerly:  Principal, Law Offices of Michael L. Sapir; Senior Vice
President,  General Counsel, Padco Advisors, Inc.; Partner, Jorden Burt Berenson
&  Klingensmith.  His address is 7900  Wisconsin  Avenue,  Suite 300,  Bethesda,
Maryland 20814.
<PAGE>

     LOUIS M.  MAYBERG*  (birthdate:  August 9,  1962).  Currently:  Trustee and
Secretary of ProFunds;  President,  the Advisor.  Formerly:  President,  Potomac
Securities,  Inc.;  Managing  Director,  National  Capital  Companies,  LLC. His
address is 7900 Wisconsin Avenue, Suite 300, Bethesda, Maryland 20814.

     MICHAEL C. WACHS  (birthdate:  October  21,  1961).  Currently:  Trustee of
ProFunds;  Vice  President,   Delancy  Investment  Group,  Inc.  Formerly:  Vice
President/Senior  Underwriter,  First Union National Bank; Vice President,  Vice
President/Senior  Credit  Officer and Vice  President/Team  Leader,  First Union
Capital  Markets  Corp.  His  address  is  1528  Powder  Mill  Lane,  Wynnewood,
Pennsylvania 19096.

     RUSSELL S. REYNOLDS, III (birthdate: July 21, 1957). Currently:  Trustee of
ProFunds;   Managing   Director,   Chief   Financial   Officer  and   Secretary,
Directorship,  Inc. Formerly: President, Quadcom Services, Inc. His address is 7
Stag Lane, Greenwich, Connecticut 06831.

     GARY TENKMAN  (birthdate:  September  16,  1970).  Currently:  Treasurer of
ProFunds;  Vice President,  Financial Services,  BISYS Fund Services.  Formerly:
Audit Manager, Investment Management Services Group. His address is 3435 Stelzer
Road, Columbus, Ohio 43219.

     *This Trustee is deemed to be an "interested  person" within the meaning of
Section 2(a)(19) of the 1940 Act, inasmuch as this person is affiliated with the
Advisor, as described herein.

PROFUNDS TRUSTEE COMPENSATION TABLE

     The  following  table  reflect fees paid to the Trustees for the year ended
December 31, 1999.

NAME OF
PERSON:  POSITION                                                 COMPENSATION

Mchael L. Sapir, Chairman and Chief Executive Officer             None

Louis M. Mayberg, Trustee, President, Secretary                   None

Russell S. Reynolds, III, Trustee                                 $5,500

Michael C. Wachs, Trustee                                         $5,500

PROFUND ADVISORS LLC

     Under an investment  advisory agreement between the Trust, on behalf of the
UltraSector  ProFunds  and the  Advisor  with  respect  to the  ProFunds,  dated
__________,  2000,  each ProFund pays the Advisor a fee at an  annualized  rate,
based on its  average  daily net  assets,  of 0.75%.  The  Advisor  manages  the
investment  and the  reinvestment  of the  assets  of each of the  ProFunds,  in
accordance  with the investment  objectives,  policies,  and limitations of each
ProFund,  subject to the general  supervision  and  control of Trustees  and the
officers of the Trust.  The Advisor bears all costs  associated  with  providing
these advisory services. The Advisor, from its own resources,  including profits
from advisory fees received from the ProFunds, provided such fees are legitimate
and not excessive,  also may make payments to broker-dealers and other financial
institutions  for their expenses in connection with the  distribution of ProFund
shares.  The Advisor's  address is 7900 Wisconsin Avenue,  Suite 300,  Bethesda,
Maryland 20814.
<PAGE>

CODE OF ETHICS

     The Trust and the Advisor each have  adopted a code of ethics,  as required
by applicable law, which is designed to prevent  affiliated persons of the Trust
and  the  Advisor  from  engaging  in  deceptive,  manipulative,  or  fraudulent
activities in connection  with securities held or to be acquired by the ProFunds
(which may also be held by persons subject to a code). There can be no assurance
that the codes will be effective in preventing such activities.

ADMINISTRATION, TRANSFER AGENT, FUND ACCOUNTING AGENT AND CUSTODIAN

     BISYS Fund Services Limited Partnership d/b/a BISYS Fund Services ("BISYS")
acts as Administrator to the ProFunds.  The Administrator  provides the ProFunds
with  all  required  general   administrative   services,   including,   without
limitation,  office space, equipment,  and personnel;  clerical and general back
office services; bookkeeping, internal accounting, and secretarial services; the
determination  of net  asset  values;  and the  preparation  and  filing  of all
reports,  registration  statements,  proxy  statements,  and all other materials
required  to be filed or  furnished  by the  ProFunds  under  Federal  and state
securities  laws.  The  Administrator  also  maintains the  shareholder  account
records for the ProFunds, distributes dividends and distributions payable by the
ProFunds,  and  produces  statements  with  respect to account  activity for the
ProFunds and their  shareholders.  The Administrator  pays all fees and expenses
that are directly related to the services  provided by the  Administrator to the
ProFunds;  each ProFund  reimburses the  Administrator for all fees and expenses
incurred by the Administrator which are not directly related to the services the
Administrator provides to the ProFunds under the service agreement.

     For its  services as  Administrator,  each ProFund pays BISYS an annual fee
equal to .15% of the  Trust's  average  daily  net  assets  up to $300  million,
declining to .05% of the Trust's average daily net assets over $1 billion. BISYS
Funds Services, Inc. ("BFSI"), an affiliate of BISYS, acts as transfer agent and
fund accounting agent for the ProFunds,  for which it receives  additional fees.
Additionally,  ProFunds  and BISYS and BFSI have  entered  into an  Omnibus  Fee
Agreement in which the amount of compensation  due and payable to BISYS shall be
the  greater  of (i) the  aggregate  fee  amount due and  payable  for  services
pursuant to the  Administration,  Fund Accounting and Transfer Agency Agreements
and (ii) the minimum  relationship  fee  described  as specific  dollar  amounts
payable over a period of ten calendar  quarters.  The address for BISYS and BFSI
is 3435 Stelzer Road, Suite 1000, Columbus, Ohio 43219.

     The Advisor, pursuant to a separate Management Services Agreement, performs
certain  client  support  and  other  administrative  services  on behalf of the
ProFunds. For these services,  each ProFund will pay to the Advisor a fee at the
annual rate of .15% of its average daily net assets for all ProFunds.

     UMB Bank, N.A. acts as custodian to the ProFunds.  UMB Bank, N.A.'s address
is 928 Grand Avenue, Kansas City, Missouri.

INDEPENDENT ACCOUNTANTS

     PricewaterhouseCoopers  LLP serves as independent auditors to the ProFunds.
PricewaterhouseCoopers  LLP provides audit services,  tax return preparation and
assistance   and   consultation   in   connection   with  certain  SEC  filings.
PricewaterhouseCoopers  LLP is located at 100 East Broad Street,  Columbus, Ohio
43215.

LEGAL COUNSEL

     Dechert  Price & Rhoads  serves as  counsel  to the  ProFunds.  The  firm's
address is 1775 Eye Street, N.W., Washington, DC 20006-2401.
<PAGE>

DISTRIBUTOR

     Concord  Financial Group,  Inc., 3435 Stelzer Road,  Columbus,  Ohio 43219,
serves as the distributor and principal  underwriter of the ProFunds'  shares in
all fifty states and the District of Columbia. Concord Financial Group, Inc.
receives no compensation from the ProFunds for serving as distributor.

SHAREHOLDER SERVICES PLAN

     Each ProFund has adopted a  Shareholder  Services  Plan (the "Plan")  which
provides  that  each  ProFund  will make  payments  equal to 1.00% (on an annual
basis) of the average  daily value of the net assets of such  ProFund's  Service
Class shares  attributable to or held in the name of the investment advisers and
other  authorized  institutions  that sell  Service  Class  shares  ("Authorized
Firms") for providing account  administration  services to their clients who are
beneficial  owners of such shares.  The  Administrator  may act as an Authorized
Firm. The Trust will enter into agreements  ("Shareholder  Services Agreements")
with  Authorized  Firms that  purchase  Service  Class shares on behalf of their
clients.  The Shareholder  Services  Agreements will provide for compensation to
the  Authorized  Firms in an  amount  up to 1.00%  (on an  annual  basis) of the
average daily net assets of the Service Class shares of the  applicable  ProFund
attributable to or held in the name of the Authorized Firm for its clients.  The
ProFunds may pay different  service fee amounts to Authorized  Firms,  which may
provide different levels of services to their clients or customers.

     The Trustees of the Trust, including a majority of the Trustees who are not
interested  persons  of the Trust and who have no direct or  indirect  financial
interest  in the  operation  of the  Plan or the  related  Shareholder  Services
Agreements,  have voted to adopt the Plan and Shareholder Services Agreements at
a meeting  called  for the  purposes  of  voting  on such  Plan and  Shareholder
Services Agreements. The Plan and Shareholder Services Agreements will remain in
effect for a period of one year and will continue in effect  thereafter  only if
such continuance is specifically  approved annually by a vote of the Trustees in
the manner described above. The Plan may be terminated at any time by a majority
of the Trustees as described above or by a vote of a majority of the outstanding
Service  Class  shares  of  the  affected  ProFund.   The  Shareholder  Services
Agreements  may be terminated at any time,  without  payment of any penalty,  by
vote of a majority of the Trustees as described above or by a vote of a majority
of the outstanding Service Class shares of the affected ProFund on not more than
60  days'  written  notice  to  any  other  party  to the  Shareholder  Services
Agreements. The Shareholder Services Agreements shall terminate automatically if
assigned.  The Trustees  have  determined  that, in their  judgment,  there is a
reasonable  likelihood  that the Plan will  benefit the  ProFunds and holders of
Service Class shares of the ProFunds.  In the Trustees'  quarterly review of the
Plan and  Shareholder  Services  Agreements,  they will consider their continued
appropriateness and the level of compensation provided therein.

     The intent of the Plan and  Shareholder  Services  Agreements is to procure
quality shareholder services on behalf of ProFund shareholders;  in adopting the
Plan and Shareholder Services Agreements,  the Trustees considered the fact that
such  shareholder  services  may have the effect of  enhancing  distribution  of
ProFund  Service Class shares and the growth of the ProFunds.  In light of this,
the ProFunds  intend to observe the procedural  requirements of Rule 12b-1 under
the  1940  Act in  considering  the  continued  appropriateness  of the Plan and
Shareholder Services Agreements.

                               COSTS AND EXPENSES

     Each ProFund bears all expenses of its operations  other than those assumed
by the Advisor or the  Administrator.  ProFund expenses include:  the management
fee;  administrative  and  transfer  agent  fees;  shareholder  servicing  fees;
custodian and accounting fees and expenses,  legal and auditing fees; securities
valuation  expenses;  fidelity bonds and other insurance  premiums;  expenses of
preparing  and  printing  prospectuses,  confirmations,  proxy  statements,  and
shareholder  reports and  notices;  registration  fees and  expenses;  proxy and
annual meeting expenses, if any; all Federal, state, and local taxes (including,
without limitation,  stamp, excise, income, and franchise taxes); organizational
costs; and non-interested Trustees' fees and expenses.
<PAGE>

          ORGANIZATION AND DESCRIPTION OF SHARES OF BENEFICIAL INTEREST

     ProFunds is a registered  open-end  investment  company under the 1940 Act.
The Trust was organized as a Delaware  business trust on April 17, 1997, and has
authorized  capital of unlimited  shares of beneficial  interest of no par value
which  may be issued in more  than one  class or  series.  Currently,  the Trust
consists of forty-three  separately managed series,  four of which are described
herein. Other series may be added in the future. Each ProFund offers two classes
of shares: the Service Class shares and the Investor Class shares.

     All shares of the ProFunds are freely transferable. The Trust shares do not
have preemptive rights or cumulative voting rights,  and none of the shares have
any preference to conversion,  exchange,  dividends,  retirements,  liquidation,
redemption,  or any other feature. Trust shares have equal voting rights, except
that, in a matter  affecting only a particular  series or class of shares,  only
shares of that series or class may be entitled to vote on the matter.

     Under   Delaware  law,  the  Trust  is  not  required  to  hold  an  annual
shareholders meeting if the 1940 Act does not require such a meeting. Generally,
there will not be annual meetings of Trust shareholders.  Trust shareholders may
remove Trustees from office by votes cast at a meeting of Trust  shareholders or
by written  consent of such Trustees.  If requested by  shareholders of at least
10% of the  outstanding  shares of the  Trust,  the Trust will call a meeting of
shareholders for the purpose of voting upon the question of removal of a Trustee
of the Trust and will assist in communications with other Trust shareholders.

     The  Declaration  of  Trust  of  the  Trust  disclaims   liability  of  the
shareholders  or the officers of the Trust for acts or  obligations of the Trust
which are binding only on the assets and property of the Trust.  The Declaration
of Trust provides for  indemnification  of the Trust's property for all loss and
expense of any  shareholder  held  personally  liable for the obligations of the
Trust. The risk of a Trust  shareholder  incurring  financial loss on account of
shareholder  liability  is limited to  circumstances  in which the Trust  itself
would  not be able  to  meet  the  Trust's  obligations.  This  risk  should  be
considered remote.

                                    TAXATION

     Set forth below is a discussion of certain U.S.  federal  income tax issues
concerning the ProFunds and the purchase,  ownership, and disposition of ProFund
shares.  This  discussion  does not  purport to be  complete or to deal with all
aspects of federal income taxation that may be relevant to shareholders in light
of their particular circumstances,  nor to certain types of shareholders subject
to special  treatment under the federal income tax laws (for example,  banks and
life insurance  companies).  This discussion is based upon present provisions of
the Internal  Revenue Code of 1986,  as amended (the  "Code"),  the  regulations
promulgated thereunder, and judicial and administrative ruling authorities,  all
of which are subject to change,  which  change may be  retroactive.  Prospective
investors  should  consult their own tax advisors with regard to the federal tax
consequences of the purchase,  ownership,  or disposition of ProFund shares,  as
well as the tax  consequences  arising  under  the  laws of any  state,  foreign
country, or other taxing jurisdiction.

     Dividends out of net ordinary  income and  distribution  of net  short-term
capital gains are taxable to the recipient U.S. shareholders as ordinary income,
whether  received in cash or reinvested in ProFund  shares.  Dividends  from net
ordinary income may be eligible for the corporate dividends-received deduction.

     The excess of net long-term  capital gains over the net short-term  capital
losses realized and distributed by a ProFund to its U.S. shareholders as capital
gains  distributions  is taxable to the  shareholders as gain from the sale of a
capital  asset held for more than one year,  regardless  of the length of time a
shareholder has held the ProFund shares.  If a shareholder  holds ProFund shares
for six months or less and during that period receives a distribution taxable to
the shareholder as long-term  capital gain, any loss realized on the sale of the
ProFund shares will be long-term loss to the extent of such distribution.

     The amount of an income dividend or capital gains distribution  declared by
a ProFund  during  October,  November or December  of a year to  shareholder  of
record as of a specified date in such a month that is paid during January of the
following year will be deemed to be received by  shareholders  on December 31 of
the prior year.
<PAGE>

     Any dividend or  distribution  paid by a ProFund has the effect of reducing
the ProFund's net asset value per share. Investors should be careful to consider
the tax effect of buying shares shortly before a distribution by a ProFund.  The
price  of  shares  purchased  at  that  time  will  include  the  amount  of the
forthcoming   distribution,   but  the  distribution  will  be  taxable  to  the
shareholder.

     A  dividend  or  capital  gains  distribution  with  respect to shares of a
ProFund held by a tax-deferred  or qualified  plan,  such as an IRA,  retirement
plan or corporate  pension or profit  sharing  plan,  will not be taxable to the
plan.  Distribution  from such plans will be taxable to individual  participants
under  applicable tax rules without regard to the character of the income earned
by the qualified plan.

     Shareholders  will be  advised  annually  as to the  federal  tax status of
dividends and capital gains  distribution made by the ProFunds for the preceding
year. Distributions by the ProFunds generally will be subject to state and local
taxes.

     Each of the  ProFunds  intends to qualify and elect to be treated each year
as a regulated  investment  company (a "RIC") under  Subchapter M of the Code. A
RIC  generally  is not  subject  to  federal  income  tax on  income  and  gains
distributed in a timely manner to its  shareholders.  Accordingly,  each ProFund
generally must, among other things, (a) derive in each taxable year at least 90%
of its gross income from dividends,  interest,  payments with respect to certain
securities  loans,  and  gains  from  the sale or other  disposition  of  stock,
securities or foreign  currencies,  or other income  derived with respect to its
business of investing in such stock, securities or currencies; and (b) diversify
its holdings so that, at the end of each fiscal quarter, (i) at least 50% of the
market value of the ProFund's  assets is  represented by cash,  U.S.  government
securities,  the securities of other  regulated  investment  companies and other
securities, with such other securities limited, in respect of any one issuer, to
an amount not greater than 5% of the value of the ProFund's total assets and 10%
of the outstanding  voting securities of such issuer, and (ii) not more than 25%
of the value of its total assets is invested in the securities of any one issuer
(other than U.S.  government  securities and the  securities of other  regulated
investment companies).

     As a RIC, a ProFund  generally  will not be subject to U.S.  federal income
tax on income and gains that it distributes to shareholders,  if at least 90% of
the ProFund's  investment  company taxable income (which  includes,  among other
items,  dividends,  interest and the excess of any net short-term  capital gains
over net long-term  capital  losses) for the taxable year is  distributed.  Each
ProFund intends to distribute substantially all of such income.

     Amounts not  distributed  on a timely basis in  accordance  with a calendar
year  distribution  requirement are subject to a nondeductible  4% excise tax at
the ProFund level.  To avoid the tax, each ProFund must  distribute  during each
calendar  year an amount  equal to the sum of (1) at least  98% of its  ordinary
income (not taking into  account any capital  gains or losses) for the  calendar
year,  (2) at least 98% of its  capital  gains in excess of its  capital  losses
(adjusted for certain ordinary losses) for a one-year period generally ending on
October 31 of the calendar year,  and (3) all ordinary  income and capital gains
for  previous  years  that were not  distributed  during  such  years.  To avoid
application  of the excise tax, the  ProFunds  intend to make  distributions  in
accordance with the calendar year distribution requirement.  A distribution will
be treated as paid on  December  31 of a calendar  year if it is declared by the
ProFund in October, November or December of that year with a record date in such
a month and paid by the  ProFund  during  January of the  following  year.  Such
distributions  will be taxable to shareholders in the calendar year in which the
distributions  are  declared,  rather  than  the  calendar  year  in  which  the
distributions are received.
<PAGE>

MARKET DISCOUNT

     If a ProFund  purchases  a debt  security  at a price lower than the stated
redemption  price of such debt  security,  the excess of the  stated  redemption
price over the  purchase  price is the "market  discount".  If the amount of the
market  discount  is more than a de minimis  amount,  a portion  of such  market
discount  must be included as ordinary  income (not capital gain) by the ProFund
in each taxable year in which the ProFund owns an interest in such debt security
and  receives a principal  payment on it. In  particular,  the  ProFund  will be
required to allocate that  principal  payment first to the portion of the market
discount  on the debt  security  that has accrued  but has not  previously  been
includable in income. In general, the amount of the market discount that must be
included  for each period is equal to the lesser of (i) the amount of the market
discount accruing during such period (plus any accrued market discount for prior
periods not  previously  taken into account) or (ii) the amount of the principal
payment with respect to such period.  Generally,  market  discount  accrues on a
daily  basis for each day the debt  security  is held by a ProFund at a constant
rate over the time remaining to the debt security's maturity or, at the election
of the  ProFund,  at a constant  yield to maturity  which takes into account the
semi-annual  compounding  of interest.  Gain  realized on the  disposition  of a
market discount  obligation must be recognized as ordinary  interest income (not
capital gain) to the extent of the "accrued market discount."

ORIGINAL ISSUE DISCOUNT

     Certain  debt  securities  acquired by the  ProFunds may be treated as debt
securities  that were originally  issued at a discount.  Original issue discount
can generally be defined as the difference between the price at which a security
was issued and its stated redemption price at maturity.  Although no cash income
is actually  received by a ProFund,  original  issue  discount that accrues on a
debt  security  in a given year  generally  is treated  for  federal  income tax
purposes  as  interest  and,  therefore,  such  income  would be  subject to the
distribution requirements applicable to regulated investment companies.

     Some debt  securities  may be purchased by the ProFunds at a discount  that
exceeds the  original  issue  discount  on such debt  securities,  if any.  This
additional  discount  represents market discount for federal income tax purposes
(see above).

OPTIONS, FUTURES AND FOREIGN CURRENCY FORWARD CONTRACTS

     Any regulated  futures  contracts and certain  options  (namely,  nonequity
options and dealer equity options) in which a ProFund may invest may be "section
1256 contracts."  Gains (or losses) on these contracts  generally are considered
to be 60% long-term and 40% short-term capital gains or losses;  however foreign
currency  gains or losses  arising  from  certain  section  1256  contracts  are
ordinary in character. Also, section 1256 contracts held by a ProFund at the end
of each taxable  year (and on certain  other dates  prescribed  in the Code) are
"marked to market" with the result that  unrealized  gains or losses are treated
as though they were realized.

     Transactions in options,  futures and forward  contracts  undertaken by the
ProFunds may result in "straddles" for federal income tax purposes. The straddle
rules may affect the character of gains (or losses)  realized by a ProFund,  and
losses  realized by the ProFund on positions  that are part of a straddle may be
deferred  under the  straddle  rules,  rather than being  taken into  account in
calculating  the  taxable  income for the  taxable  year in which the losses are
realized.  In addition,  certain carrying charges  (including  interest expense)
associated with positions in a straddle may be required to be capitalized rather
than deducted currently.  Certain elections that a ProFund may make with respect
to its straddle  positions  may also affect the amount,  character and timing of
the recognition of gains or losses from the affected positions.

     Because only a few  regulations  implementing  the straddle rules have been
promulgated,  the  consequences  of such  transactions  to the  ProFunds are not
entirely clear. The straddle rules may increase the amount of short-term capital
gain realized by a ProFund,  which is taxed as ordinary income when  distributed
to  shareholders.  Because  application  of the  straddles  rules may affect the
character of gains or losses,  defer losses and/or accelerate the recognition of
gains or losses from the affected straddle  positions,  the amount which must be
distributed to shareholders as ordinary income or long-term  capital gain may be
increased or decreased  substantially  as compared to a fund that did not engage
in such transactions.
<PAGE>

CONSTRUCTIVE SALES

     Recently  enacted  rules may affect the timing and  character  of gain if a
ProFund engages in  transactions  that reduce or eliminate its risk of loss with
respect to appreciated  financial positions.  If the ProFund enters into certain
transactions in property while holding  substantially  identical  property,  the
ProFund  would be  treated  as if it had sold and  immediately  repurchased  the
property  and would be taxed on any gain (but not  loss)  from the  constructive
sale.  The  character  of gain from a  constructive  sale would  depend upon the
ProFund's holding period in the property. Loss from a constructive sale would be
recognized  when the property was  subsequently  disposed of, and its  character
would depend on the ProFund's holding period and the application of various loss
deferral provisions of the Code.

PASSIVE FOREIGN INVESTMENT COMPANIES

     The  ProFunds  may  invest in shares of  foreign  corporations  that may be
classified under the Code as passive foreign investment companies ("PFICs").  In
general,  a foreign  corporation is classified as a PFIC if at least one-half of
its assets constitute investment-type assets, or 75% or more of its gross income
is   investment-type   income.   If  a  ProFund  receives  a  so-called  "excess
distribution" with respect to PFIC stock, the ProFund itself may be subject to a
tax on a portion of the excess  distribution,  whether or not the  corresponding
income is distributed by the ProFund to shareholders. In general, under the PFIC
rules, an excess  distribution  is treated as having been realized  ratably over
the period  during  which the ProFund  held the PFIC  shares.  Each ProFund will
itself be subject to tax on the portion,  if any, of an excess distribution that
is so allocated to prior ProFund  taxable  years and an interest  factor will be
added to the tax, as if the tax had been  payable in such prior  taxable  years.
Certain  distributions  from a PFIC as well as gain from the sale of PFIC shares
are treated as excess  distributions.  Excess distributions are characterized as
ordinary  income even  though,  absent  application  of the PFIC rules,  certain
excess distributions might have been classified as capital gains.

     The  ProFunds  may be  eligible to elect  alternative  tax  treatment  with
respect to PFIC shares.  Under an election  that  currently is available in some
circumstances,  a ProFund  generally  would be  required to include in its gross
income its share of the  earnings of a PFIC on a current  basis,  regardless  of
whether  distributions  were  received  from the PFIC in a given  year.  If this
election were made, the special rules, discussed above, relating to the taxation
of excess  distributions,  would not apply. In addition,  another election would
involve  marking to market the ProFund's  PFIC shares at the end of each taxable
year, with the result that unrealized gains would be treated as though they were
realized and reported as ordinary income. Any mark-to-market losses and any loss
from an actual  disposition  of ProFund  shares would be  deductible as ordinary
losses to the extent of any net mark-to-market gains included in income in prior
years.

DISTRIBUTIONS

     Distributions  of investment  company  taxable income are taxable to a U.S.
shareholder as ordinary income,  whether paid in cash or shares.  Dividends paid
by a ProFund to a  corporate  shareholder,  to the  extent  such  dividends  are
attributable to dividends  received from U.S.  corporations by the ProFund,  may
qualify for the dividends received deduction.  However,  the revised alternative
minimum tax  applicable  to  corporations  may deduct the value of the dividends
received  deduction.  Distributions  of net  capital  gains  (the  excess of net
long-term capital gains over net short-term capital losses),  if any, designated
by the ProFund as capital gain dividends, whether paid in cash or in shares, are
taxable  as gain from the sale or  exchange  of an asset  held for more than one
year,  regardless of how long the  shareholder  has held the  ProFund's  shares.
Capital gains dividends are not eligible for the dividends received deduction.

     Shareholders will be notified annually as to the U.S. federal tax status of
distributions,  and  shareholders  receiving  distributions in the form of newly
issued  shares  will  receive a report as to the net asset  value of the  shares
received.
<PAGE>

     If the net asset value of shares is reduced below a shareholder's cost as a
result of a  distribution  by a ProFund,  such  distribution  generally  will be
taxable even though it represents a return of invested capital. Investors should
be careful to consider the tax  implications  of buying shares of a ProFund just
prior to a distribution. The price of shares purchased at this time will include
the amount of the forthcoming distribution,  but the distribution will generally
be taxable.

     If a  shareholder  has chosen to  receive  distributions  in cash,  and the
postal ( or other  delivery  )  service  is  unable  to  deliver  checks  to the
shareholder's  address of record,  the  ProFunds  will  change the  distribution
option so that all  distributions  are  automatically  reinvested  in additional
shares. The ProFunds will not pay interest on uncashed distribution checks.

DISPOSITION OF SHARES

     Upon a redemption,  sale or exchange of shares of a ProFund,  a shareholder
will  realize  a  taxable  gain or loss  depending  upon his or her basis in the
shares. A gain or loss will be treated as capital gain or loss if the shares are
capital  assets in the  shareholder's  hands and  generally  will be  long-term,
mid-term or short-term,  depending upon the shareholder's holding period for the
shares.  Any loss realized on a redemption,  sale or exchange will be disallowed
to  the  extent  the  shares  disposed  of  are  replaced   (including   through
reinvestment of dividends) within a period of 61 days,  beginning 30 days before
and ending 30 days after the shares are disposed of. In such a case the basis of
the shares  acquired will be adjusted to reflect the  disallowed  loss. Any loss
realized by a shareholder on the  disposition of a ProFund's  shares held by the
shareholder  for six  months  or less  will be  treated  for tax  purposes  as a
long-term  capital  loss to the  extent of any  distributions  of  capital  gain
dividends  received or treated as having been received by the  shareholder  with
respect to such shares.

BACKUP WITHHOLDING

     Each ProFund generally will be required to withhold federal income tax at a
rate  of  31%  ("backup   withholding")   from  dividends  paid,   capital  gain
distributions,  and redemption  proceeds to  shareholders if (1) the shareholder
fails  to  furnish  the  ProFund  with  the   shareholder's   correct   taxpayer
identification  number or  social  security  number,  (2) the IRS  notifies  the
shareholder or the ProFund that the  shareholder  has failed to report  properly
certain  interest  and  dividend  income to the IRS and to respond to notices to
that effect,  or (3) when  required to do so, the  shareholder  fails to certify
that he or she is not subject to backup withholding. Any amounts withheld may be
credited against the shareholder's federal income tax liability.

OTHER TAXATION

     Distributions may be subject to additional state,  local and foreign taxes,
depending on each shareholder's particular situation.  Non-U.S. shareholders and
certain types of U.S.  shareholders  subject to special treatment under the U.S.
federal income tax laws (e.g. banks and life insurance companies) may be subject
to U.S. tax rules that differ significantly from those summarized above.

EQUALIZATION ACCOUNTING

     Each ProFund  distributes  its net  investment  income and capital gains to
shareholders  as  dividends  annually  to the  extent  required  to qualify as a
regulated  investment  company  under the Code and  generally  to avoid  federal
income or excise tax.  Under  current  law,  each  ProFund may on its tax return
treat as a  distribution  of investment  company  taxable income and net capital
gain the portion of  redemption  proceeds  paid to redeeming  shareholders  that
represents the redeeming  shareholders'  portion of the ProFund's  undistributed
investment  company  taxable income and net capital gain.  This practice,  which
involves the use of  equalization  accounting,  will have the effect of reducing
the amount of income and gains that the  ProFund is required  to  distribute  as
dividends to  shareholders  in order for the ProFund to avoid federal income tax
and excise  tax.  This  practice  may also  reduce  the amount of  distributions
required  to be  made  to  nonredeeming  shareholders  and  the  amount  of  any
undistributed income will be reflected in the value of the ProFund's shares; the
total return on a  shareholder's  investment  will not be reduced as a result of
the ProFund's distribution policy.  Investors who purchase shares shortly before
the  record  date of a  distribution  will pay the full price for the shares and
then receive some portion of the price back as a taxable distribution.
<PAGE>

                             PERFORMANCE INFORMATION

TOTAL RETURN CALCULATIONS

     From time to time,  each of the ProFunds 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,  or for the life of
the ProFund.  Other total return  quotations,  aggregate or average,  over other
time periods for the ProFund also may be included.

     The total  return of a  ProFund  for a  particular  period  represents  the
increase (or decrease) in the value of a hypothetical  investment in the ProFund
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;  this
calculation assumes that the initial investment is made at the current net asset
value and that all income  dividends or capital gains  distributions  during the
period are reinvested in shares of the ProFund at net asset value.  Total return
is based on  historical  earnings  and net 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
ProFund.

     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 equal the initial amount invested to the ending redeemable value.

COMPARISONS OF INVESTMENT PERFORMANCE

     In conjunction with performance  reports,  promotional  literature,  and/or
analyses of shareholder  service for a ProFund,  comparisons of the  performance
information of the ProFund for a given period to the  performance of recognized,
unmanaged indexes for the same period may be made. Such indexes include, but are
not  limited  to,  ones  provided  by Dow  Jones &  Company,  Standard  & Poor's
Corporation,  Lipper Analytical  Services,  Inc., Shearson Lehman Brothers,  the
National  Association of Securities  Dealers,  Inc., The Frank Russell  Company,
Value Line  Investment  Survey,  the American Stock Exchange,  the  Philadelphia
Stock Exchange, Morgan Stanley Capital International,  Wilshire Associates,  the
Financial  Times-Stock  Exchange,  and the Nikkei  Stock  Average  and  Deutsche
Aktienindex,  all of which are unmanaged market indicators. Such comparisons can
be useful measures of the quality of a ProFund's investment performance.

     In addition,  rankings,  ratings, and comparisons of investment performance
and/or   assessments  of  the  quality  of  shareholder   service  appearing  in
publications such as Money,  Forbes,  Kiplinger's  Magazine,  Personal Investor,
Morningstar,  Inc., and similar sources which utilize  information  compiled (i)
internally,  (ii) by Lipper Analytical Services,  Inc.  ("Lipper"),  or (iii) by
other recognized analytical services, may be used in sales literature. The total
return of each ProFund also may be compared to the  performances of broad groups
of comparable mutual funds with similar investment goals, as such performance is
tracked  and  published  by such  independent  organizations  as Lipper  and CDA
Investment Technologies, Inc., among others.

     Further  information  about the performance of the ProFunds is contained in
the  ProFunds  annual  reports to  shareholders,  which may be obtained  without
charge by writing to the ProFunds at the address or telephoning  the ProFunds at
the telephone number set forth on the cover page of this SAI.
<PAGE>

                              FINANCIAL STATEMENTS

     Since  the  ProFunds  had not  commenced  operation  as of the date of this
Statement  of  Additional  Information,  there are no  financial  statements  to
include in the Statement of Additional Information.

     NO  PERSON  HAS  BEEN  AUTHORIZED  TO GIVE ANY  INFORMATION  OR TO MAKE ANY
REPRESENTATIONS  NOT  CONTAINED  IN THE  PROSPECTUS,  OR IN  THIS  STATEMENT  OF
ADDITIONAL  INFORMATION,  IN CONNECTION WITH THE OFFERING MADE BY THE PROSPECTUS
AND, IF GIVEN OR MADE, SUCH INFORMATION OR PRESENTATIONS MUST NOT BE RELIED UPON
AS HAVING BEEN AUTHORIZED BY PROFUNDS.  THIS STATEMENT OF ADDITIONAL INFORMATION
DOES NOT CONSTITUTE AN OFFERING BY PROFUNDS IN ANY JURISDICTION IN WHICH SUCH AN
OFFERING MAY NOT LAWFULLY BE MADE.


<PAGE>

                                     Part C
                                Other Information
<TABLE>
<S>     <C>              <C>

ITEM 23. Exhibits

         (a)(1)          Certificate of Trust of ProFunds (the "Registrant") (1)
         (a)(2)          First Amended Declaration of Trust of the Registrant (2)
         (a)(3)          Form of Establishment and Designation of Series dated February 18, 1998(5)
         (a)(4)          Form of Establishment and Designation of Series dated
                         February 23, 1999 (5)
         (a)(5)          Form of Establishment and Designation of Eleven Series
                         dated October 15, 1999 (6)
         (a)(6)          Form of Establishment and Designation of Three Series (7)
         (a)(7)          Form of Establishment and Designation of Seventeen
                         Series (8)
         (a)(8)          Form of Establishment and Designation of Series (9)
         (a)(9)          Form of Amended Designation of Series (9)
         (a)(10)         Form of Establishment and Designation of Series
         (b)             By-laws of Registrant (2)
         (c)             Not Applicable
         (d)(1)          Form of Investment Advisory  Agreement (2)
         (d)(2)          Investment Advisory Agreement for Cash Management
                         Portfolio (7)
         (d)(3)          Amendment to Investment Advisory Agreement between
                         ProFunds and ProFund Advisors LLC (7)
         (d)(4)          Investment Advisory Agreement for UltraEurope and
                         UltraShort Europe ProFunds (4)
         (d)(5)          Form of Amended and Restated Investment Advisory
                         Agreement (8)
         (d)(6)          Form of Amended and Restated Investment Advisory
                         Agreement (9)
         (d)(7)          Form of Amended and Restated Investment Advisory
                         Agreement
         (e)             Form of Distribution Agreement and Dealer Agreement (2)
         (f)             Not Applicable
         (g)(1)          Form of Custody Agreement with UMB Bank, N.A. (2)
         (g)(2)          Amendment to Custody Agreement with UMB Bank, N.A. (3)
         (g)(3)          Form of Foreign Custody Manager Delegation Agreement
         (h)(1)          Form of Transfer Agency Agreement (2)
         (h)(2)          Form of Administration Agreement (2)
         (h)(3)          Form of Administration and Services Agreement
                         incorporated by reference to Bankers Trust Company's
                         Registration Statement on Form N-1A (File No.
                         811-06073) filed with the Commission on April 24, 1996.
         (h)(4)          Form of Fund Accounting Agreement (2)
         (h)(5)(i)       Form of Management Services Agreement (2)
         (h)(5)(ii)      Amendment to Management Services Agreement with
                         respect to the UltraShort OTC ProFund (3)
         (h)(5)(iii)     Form of Amended and Restated Management Services
                         Agreement (4)
         (h)(6)          Form of Shareholder Services Agreement related to
                         Adviser Shares (2)
         (h)(7)          Form of Omnibus Fee Agreement with BISYS Fund Services
                         LP (2)
         (h)(8)          Form of Amendment to Omnibus Fee Agreement (6)
         (h)(9)          Form of Participation Agreement (6)
         (h)(10)         Form of Administrative Services Agreement(6)
<PAGE>


         (i)             Opinion and Consent of Counsel to the Registrant (2)
         (j)             Consent of Independent Auditors
         (k)             None
         (l)             Purchase Agreement dated October 10, 1997 between the
                         Registrant and National Capital Group, Inc. (2)
         (m)(1)          Form of Distribution Plan (6)
         (m)(2)          Form of Services Agreement (6)
         (n)(1)          Multiple Class Plan (previously o(1)) (7)
         (n)(2)          Form of Amended and Restated Multi-Class Plan (8)
         (n)(3)          Form of Amended and Restated Multi-Class Plan (9)
         (n)(4)          Form of Amended and Restated Multi-Class Plan
         (o)(1)          Power of Attorney of Cash Management Portfolio
                         (previously p(1)) (7)
         (o)(2)          Power of Attorney of ProFunds (previously p(2))(4)
         (o)(3)          Power of Attorney of ProFunds (9)
         (p)(1)          Form of Code of Ethics of Registrant (9)
         (p)(2)          Form of Code of Ethics of ProFund Advisors LLC (9)
</TABLE>

(1)  Filed with initial registration statement.

(2)  Previously filed on October 29, 1997 as part of Pre-Effective Amendment No.
     3 and incorporated by reference herein.

(3)  Previously filed on February 24, 1998 as part of  Post-Effective  Amendment
     No. 1 and incorporated by reference herein.

(4)  Previously filed on March 2, 1999 as part of Post-Effective  Amendment No.4
     and incorporated by reference herein.

(5)  Previously filed on August 4, 1999 as part of Post-Effective Amendment No.6
     and incorporated by reference herein.

(6)  Previously  filed on October 15, 1999 as part of  Post-Effective  Amendment
     No. 8 and incorporated by reference herein.

(7)  Previously filed on November 15, 1999 as part of  Post-Effective  Amendment
     No. 9 and incorporated by reference herein.

(8)  Previously filed on December 23, 1999 as part of  Post-Effective  Amendment
     No. 10 and incorporated by reference herein.

(9)  Previously filed on May 1, 2000 as part of Post-Effective  Amendment No. 13
     and incorporated by reference herein.


ITEM 24. Persons Controlled By or Under Common Control With Registrant.

         None.

ITEM 25. Indemnification

         The  Registrant  is  organized  as a  Delaware  business  trust  and is
         operated pursuant to a Declaration of Trust, dated as of April 17, 1997
         (the "Declaration of Trust"),  that permits the Registrant to indemnify
         its  trustees   and  officers   under   certain   circumstances.   Such
         indemnification,  however, is subject to the limitations imposed by the
         Securities Act of 1933, as amended,  and the Investment  Company Act of
         1940, as amended.  The Declaration of Trust of the Registrant  provides
         that  officers  and trustees of the Trust shall be  indemnified  by the
         Trust  against  liabilities  and  expenses  of defense  in  proceedings
         against  them by reason of the fact that they each  serve as an officer
         or trustee  of the Trust or as an officer or trustee of another  entity
         at the request of the entity.  This  indemnification  is subject to the
         following conditions:

         (a)      no trustee or officer of the Trust is indemnified  against any
                  liability to the Trust or its security  holders  which was the
                  result of any willful misconduct, bad faith, gross negligence,
                  or reckless disregard of his duties;

         (b)      officers  and trustees of the Trust are  indemnified  only for
                  actions  taken in good faith which the  officers  and trustees
                  believed  were in or not opposed to the best  interests of the
                  Trust; and

         (c)      expenses  of any suit or  proceeding  will be paid in  advance
                  only if the persons who will benefit by such advance undertake
                  to repay the expenses  unless it  subsequently  is  determined
                  that such persons are entitled to indemnification.
<PAGE>

         The   Declaration  of  Trust  of  the   Registrant   provides  that  if
         indemnification  is not  ordered  by a  court,  indemnification  may be
         authorized upon determination by shareholders, or by a majority vote of
         a quorum of the trustees who were not parties to the proceedings or, if
         this quorum is not obtainable, if directed by a quorum of disinterested
         trustees,  or by independent  legal counsel in a written opinion,  that
         the persons to be indemnified have met the applicable standard.

ITEM 26. Business and Other Connections  of Investment  Advisor

         ProFund Advisors LLC, a limited liability company formed under the laws
         of the State of  Maryland on May 8, 1997.  Information  relating to the
         business  and  other  connections  of  Bankers  Trust  which  serves as
         investment adviser to the Cash Management  Portfolio and each director,
         officer  or  partner  of  Bankers  Trust  are  hereby  incorporated  by
         reference  to  disclosures  in  Item  28  of  BT  Institutional   Funds
         (accession #  0000862157-97-00007)  as filed on March 17, 1997 with the
         Securities and Exchange Commission.

ITEM 27. Principal Underwriter

Concord  Financial  Group,  Inc., 3435 Stelzer Road,  Columbus,  Ohio 43219 acts
solely as  interim  distributor  for the  Registrant.  The  officers  of Concord
Financial  Group,  Inc., all of whose  principal  business  address is set forth
above, are:
<TABLE>
<S>                       <C>                                        <C>

                           Principal Position and Offices             Position and Offices
Name                       with CFG                                   with Registrant
----                       ------------------------------             --------------------
Lynn J. Magnum             Chairman                                   none

Walter B. Grimm            President                                  none

Dennis Sheehan Sr.         Executive Vice President                   none

Kevin Dell                 Vice President/Secretary/                  none
                           General Counsel

Dale Smith                 Vice President/                            none
                           Chief Financial Officer

Irimga McKay               Supervising Principal                      none

</TABLE>
<PAGE>




ITEM 28. Location of Accounts and Records

         All  accounts,  books,  and  records  required  to  be  maintained  and
         preserved by Section  31(a) of the  Investment  Company Act of 1940, as
         amended,  and Rules  31a-1 and  31a-2  thereunder,  will be kept by the
         Registrant at:

         (1)      ProFund  Advisors  LLC,  7900  Wisconsin  Avenue,  Suite  300,
                  Bethesda,  Maryland  (records  relating  to its  functions  as
                  investment  adviser and manager to the  portfolios  other than
                  the Money Market ProFund);

         (2)      BISYS  Fund  Services,   3435  Stelzer  Road,  Columbus,  Ohio
                  (records  relating to the  administrator,  fund accountant and
                  transfer agent).

         (3)      UMB Bank,  N.A., 928 Grand Avenue,  Kansas City,  Missouri for
                  each ProFund (records relating to its function as Custodian)

ITEM 29. Management Services

         None.

ITEM 30. Undertakings

         (a)      Registrant  undertakes to call a meeting of  shareholders  for
                  the  purpose  of voting  upon the  question  of  removal  of a
                  Trustee or Trustees when  requested to do so by the holders of
                  at least 10% of the  Registrant's  outstanding  shares and, in
                  connection  with such meeting,  to comply with the shareholder
                  communications  provisions of Section 16(c) of the  Investment
                  Company Act of 1940.


          (b)     Registrant  undertakes  to  furnish  each  person  to  whom  a
                  prospectus is delivered with a copy of the Registrant's latest
                  Annual  Report  to  shareholders,  upon  request  and  without
                  charge.



<PAGE>



                                   SIGNATURES
                                    PROFUNDS

     Pursuant  to  the  requirements  of the  Securities  Act of  1933  and  the
Investment Company Act of 1940, the Registrant has duly caused this amendment to
its  Registration  Statement  on Form  N-1A to be  signed  on its  behalf by the
undersigned, thereunto duly authorized, in Washington, D.C. on July 13, 2000.

                                                PROFUNDS

                                                /S/ MICHAEL L. SAPIR*
                                                Michael L. Sapir, Chairman
                                                and Chief Executive Officer

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the date indicated.
<TABLE>
<S>     <C>                                         <C>                                 <C>

           Signatures                                Title                              Date

/s/      MICHAEL L. SAPIR*                           Trustee, President                 July 13, 2000
---------------------------------
         Michael L. Sapir

/s/      LOUIS MAYBERG*                              Trustee, Secretary                 July 13, 2000
---------------------------------
         Louis Mayberg

/s/      RUSSELL S. REYNOLDS, III*                   Trustee                            July 13, 2000
---------------------------------
         Russell S. Reynolds, III

/s/      MICHAEL WACHS*                              Trustee                            July 13, 2000
----------------------------------
         Michael Wachs

/s/      GARY TENKMAN                                Treasurer                          July 13, 2000
----------------------------------
          Gary Tenkman

</TABLE>

*By: /s/ KEITH T. ROBINSON

     Keith T. Robinson
     as Attorney-in-Fact
     Date: July 13, 2000


<PAGE>




                                   SIGNATURES
                            CASH MANAGEMENT PORTFOLIO

     CASH MANAGEMENT PORTFOLIO has duly caused this Post-Effective Amendment No.
14 to the  Registration  Statement  on Form N-1A of ProFunds to be signed on its
behalf by the  undersigned,  there unto duly authorized in the City of Baltimore
and the State of Maryland on the 11th day of July, 2000.

                                                 CASH MANAGEMENT PORTFOLIO


                                                 /s/  Daniel O. Hirsch
                                                 Daniel O. Hirsch, Secretary of
                                                 the Cash Management Portfolio

          This Post-Effective  Amendment No. 14 to the Registration Statement on
Form N-1A of ProFunds  has been  signed  below by the  following  persons in the
capacities and on the date indicated.
<TABLE>
<S>                                                 <C>                            <C>

Signatures                                           Title                              Date


/s/  John Y. Keffer*                                 President and                  July 11, 2000
--------------------------------------------
     John Y. Keffer                                  Chief Executive Officer

/s/  Charles A. Rizzo*                               Treasurer and Principal        July 11, 2000
--------------------------------------------
     Charles A. Rizzo                                Financial Officer

/s/  Charles P. Biggar*                              Trustee                        July 11, 2000
--------------------------------------------
     Charles P. Biggar

/s/  S. Leland Dill*                                 Trustee                        July 11, 2000
--------------------------------------------
     S. Leland Dill

/s/  Richard T. Hale*                                Trustee                        July 11, 2000
--------------------------------------------
     Richard T. Hale

/s/  Richard J. Herring*                             Trustee                        July 11, 2000
--------------------------------------------
     Richard J. Herring

/s/  Bruce E. Langton*                               Trustee                        July 11, 2000
--------------------------------------------
     Bruce E. Langton

/s/  Martin J. Gruber*                               Trustee                        July 11, 2000
--------------------------------------------
     Martin J. Gruber

/s/  Philip Saunders, Jr.*                           Trustee                        July 11, 2000
--------------------------------------------
     Philip Saunders, Jr.

/s/  Harry Van Benschoten*                           Trustee                        July 11, 2000
--------------------------------------------
     Harry Van Benschoten

*By: /s/  Daniel O.Hirsch
     Daniel O. Hirsch, Secretary of Cash Management Portfolio
     Attorney-in-Fact


</TABLE>


Date:   July 11, 2000


<PAGE>





                                  EXHIBIT INDEX



Exhibit                          Description


(a)(10)           Form of Establishment and Designation of Series
(d)(7)            Form of Amended and Restated Investment Advisory Agreement
(g)(3)            Form of Foreign Custody Manager Delegation Agreement
(j)               Consent of Independent Auditors
(n)(4)            Form of Amended and Restated Multi-Class Plan




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