WINTHROP OPPORTUNITY FUNDS
497, 1997-02-26
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WINTHROP OPPORTUNITY FUNDS
277 Park Avenue, New York, NY 10172.
Toll Free (800) 225-8011.
 
Winthrop Opportunity Funds, a Delaware business trust registered as a management
investment  company (the  'Opportunity Funds'),  is currently  comprised of four
series: the  Winthrop  Municipal  Money  Fund (the  'Municipal  Fund')  and  the
Winthrop U.S. Government Money Fund (the 'Government Fund' and together with the
Municipal Fund, the 'Money Funds'), and the Winthrop Developing Markets Fund and
the  Winthrop International Equity Fund (the  'Equity Funds'), which are offered
in a separate prospectus. Each of  the Money Funds is open-end and  diversified.
The  Money  Funds are  designed to  afford investors  the opportunity  to choose
between the  separately  managed  funds described  below  which  have  differing
investment objectives and policies.
 
A DIVERSIFIED SELECTION OF INVESTMENT ALTERNATIVES
 
WINTHROP  MUNICIPAL MONEY FUND -- Seeks  maximum current income, consistent with
liquidity and safety of principal, that  is exempt from Federal income taxes  by
investing principally in a diversified portfolio of municipal securities.
 
WINTHROP  U.S. GOVERNMENT MONEY FUND -- Seeks maximum current income, consistent
with liquidity and  safety of  principal, by investing  in a  portfolio of  U.S.
Government securities.
 
There  can, of course, be  no assurance that the  Money Funds will achieve their
respective investment objectives.
 
See 'Investment  Objectives,  Policies  and  Risk  Considerations'  for  a  more
detailed  description of the investment objectives and policies of the Municipal
Fund and Government Fund.
 
PURCHASE INFORMATION
 
Shares of the  Money Funds may  be purchased  directly from the  Money Funds  by
using  the  Share Purchase  Application found  in  this Prospectus,  through the
Funds' Distributor, Donaldson, Lufkin &  Jenrette Securities Corporation, or  by
contacting your securities dealer.
 
The  minimum initial  investment in shares  of each  Money Fund is  $250 and the
minimum for subsequent investments is  $25. Shareholder accounts established  on
behalf  of the following types  of plans will be  exempt from the Funds' minimum
initial  investment  and   minimum  subsequent   investment  requirements:   (i)
retirement  plans qualified under section 401(k) of the Internal Revenue Code of
1986, as amended  (the 'Code'); (ii)  plans described in  section 403(b) of  the
Code;  (iii) deferred compensation  plans described in section  457 of the Code;
(iv) simplified employee pension  (SEP) plans; and  (v) savings incentive  match
plans for employees (SIMPLE). Further information can be obtained from the Money
Funds  at  the  address  and  telephone  number  shown  above.  See  'Purchases,
Redemptions and Shareholder Services.'
 
Shares of each Money  Fund may be purchased  at a price equal  to the net  asset
value  of the Money Fund which is expected to be $1.00 per share. See 'Net Asset
Value.'
 
ADDITIONAL INFORMATION
 
This Prospectus  sets forth  concisely the  information a  prospective  investor
should  know before  investing in  the Money  Funds. A  'Statement of Additional
Information' dated  January 24,  1997, which  provides a  further discussion  of
certain  topics in this Prospectus and other matters which may be of interest to
some investors,  has been  filed  with the  Securities and  Exchange  Commission
('SEC')  and is incorporated herein by reference. For a free copy, write or call
the Money Funds at the address or telephone number shown above. In addition, the
SEC maintains  an  Internet  Web site  (http://www.sec.gov)  that  contains  the
Statement  of  Additional Information,  material  incorporated by  reference and
other information regarding the Money Funds.
 
An investment  in the  Winthrop Opportunity  Funds is  (i) neither  insured  nor
guaranteed  by the  U.S. Government;  (ii) not  a deposit  or obligation  of, or
guaranteed or endorsed  by, any  bank; and (iii)  not federally  insured by  the
Federal  Deposit Insurance Corporation,  the Federal Reserve  Board or any other
agency. There can be no assurance that the Money Funds will be able to  maintain
a stable net asset value of $1.00 per share.
                               ------------------
                         THESE SECURITIES HAVE NOT BEEN
                         APPROVED OR DISAPPROVED BY THE
                            SECURITIES AND EXCHANGE
                            COMMISSION OR ANY STATE
                         SECURITIES COMMISSION NOR HAS
                          THE SECURITIES AND EXCHANGE
                            COMMISSION OR ANY STATE
                          SECURITIES COMMISSION PASSED
                         UPON THE ACCURACY OR ADEQUACY
                            OF THIS PROSPECTUS. ANY
                         REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.
                       PROSPECTUS DATED JANUARY 24, 1997
   Investors are advised to read this Prospectus and to retain it for future
                                   reference.


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                         SUMMARY OF MONEY FUND EXPENSES
 
<TABLE>
<CAPTION>
                                                                                                  MUNICIPAL    GOVERNMENT
SHAREHOLDER TRANSACTION EXPENSES                                                                    FUND          FUND
                                                                                                  ---------    ----------
<S>                                                                                               <C>          <C>
Maximum Sales Load Imposed on Purchases (as a percentage of offering price)....................        0%            0%
Maximum Sales Load Imposed on Reinvested Dividends (as a percentage of offering price).........        0%            0%
Deferred Sales Charge (as a percentage of original purchase price or redemption proceeds, as
  applicable)..................................................................................        0%            0%
Redemption Fees (as a percentage of amount redeemed)...........................................        0%            0%
Exchange Fee...................................................................................        0%            0%
ANNUAL FUND OPERATING EXPENSES (estimated as a percentage of average daily net assets)
    Management Fees*...........................................................................      .40%          .40%
    12b-1 Fees**...............................................................................      .25%          .25%
    Other Expenses, after expense reimbursement................................................      .25%`D'       .25%`D'
                                                                                                      --            --
    Total Fund Operating Expenses..............................................................      .90%`D'       .90%`D'
</TABLE>
 
- ------------
 
*  Management  Fees with respect to  the Money Funds are  reduced to .35% on net
   assets in excess of $1 billion.
 
** The Money Funds have entered into  a Distribution Agreement and a Rule  12b-1
   Plan  pursuant to which each Money Fund pays a distribution fee each month at
   an annual rate of  up to .25 of  1% of the average  daily net assets of  each
   Money  Fund. Amounts paid under the  Distribution Agreement are used in their
   entirety to  reimburse  the  Money Funds'  distributor  for  actual  expenses
   incurred.  Long-term shareholders may, over time, pay more in 12b-1 Fees than
   the economic equivalent of the  maximum front-end sales charges permitted  by
   the  National Association  of Securities Dealers,  Inc. See  'Expenses of the
   Money Funds -- Distribution Agreement.'
 
`D'  As of  the date  of this  Prospectus, the  Money Funds  have not  commenced
     operations.  Accordingly, these percentages are estimates. 'Other Expenses'
     includes fees paid to the  Money Funds' independent auditor, legal  counsel
     and Trustees as well as expenses associated with registration fees, reports
     to  shareholders and other miscellaneous expenses.  Such fees are not based
     on a percentage of each Money Fund's average net assets, but a fixed dollar
     cost. The percentages for other fixed cost expenses are the maximum allowed
     to be charged to the Money Funds as total operating expenses are capped  at
     the  percentages stated  above. Commencing at  the inception  of each Money
     Fund and through  October 31, 1997,  the Adviser has  agreed to reduce  its
     management  fees and the Adviser or its affiliates have agreed to reimburse
     operating expenses by the amount that Total Fund Operating Expenses  exceed
     .90%  of the average daily net assets of each Money Fund. After October 31,
     1997, the Adviser or its affiliates may, in their discretion, determine  to
     discontinue this practice with respect to either Money Fund.
 
<TABLE>
<CAPTION>
                                               EXAMPLES                                                  1 YEAR    3 YEARS
- ------------------------------------------------------------------------------------------------------   ------    -------
<S>                                                                                                      <C>       <C>
MUNICIPAL FUND
You would pay the following expenses on a $1,000 investment, assuming (1) 5% annual return
(cumulatively through the end of each time period) and (2) redemption at the end of each time
period................................................................................................     $9        $29

GOVERNMENT FUND
You would pay the following expenses on a $1,000 investment, assuming (1) 5% annual return
(cumulatively through the end of each time period) and (2) redemption at the end of each time
period................................................................................................     $9        $29
</TABLE>
 
     The  purpose  of this  table is  to assist  investors in  understanding the
various costs and expenses which shareholders  of each Money Fund bear  directly
or   indirectly.  See  also  'Expenses  of  the  Money  Funds'  and  'Purchases,
Redemptions  and  Shareholder  Services.' The example should not be considered a
representation  of  future expenses and actual expenses may be greater or lesser
than those shown.
 
                                       2
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                                  INTRODUCTION
 
     Winthrop  Opportunity Funds is  a Delaware business  trust whose shares are
offered in  four separate  portfolios: the  Winthrop Municipal  Money Fund  (the
'Municipal  Fund') and the Winthrop U.S.  Government Money Fund (the 'Government
Fund' and together with the Municipal Fund, the 'Money Funds'), and the Winthrop
Developing Markets Fund and the Winthrop International Equity Fund (the  'Equity
Funds'),   which  are  offered  in   a  separate  prospectus.  Because  Winthrop
Opportunity Funds  offers  multiple funds,  it  is  known as  a  'series  fund.'
Winthrop  Opportunity Funds may  in the future  establish additional series with
different investment objectives  and policies  and offer  additional classes  of
shares.
 

     Each  portfolio of  the Winthrop  Opportunity Funds  is a  separate pool of
assets constituting,  in  effect,  a  separate  fund  with  its  own  investment
objective   and  policies.  (See  'Investment   Objectives,  Policies  and  Risk
Considerations.') A shareholder may utilize the Money Funds' exchange  privilege
to  transfer such shareholder's assets to the  Equity Funds or for shares of the
Winthrop Growth Fund, Winthrop Fixed  Income Fund, Winthrop Small Company  Value
Fund,  Winthrop  Growth and  Income Fund  or the  Winthrop Municipal  Trust Fund
(collectively, the 'Focus Funds') in accordance with the shareholder's  changing
perceptions of the relative investment potential of each investment alternative.
A  shareholder will pay a  higher 12b-1 Fee when  exchanging shares of the Money
Funds (.25 of  1% annually) for  Class A shares  of the Focus  Funds (.30 of  1%
annually)  or Class B shares  of the Equity Funds  or Focus Funds (1% annually).
(See  'Purchases,  Redemptions  and  Shareholder  Services.')  In  addition,   a
shareholder  may be subject to sales charges upon exchanging shares of the Money
Funds  for  shares  of  the  Equity  Funds  or  Focus  Funds.  (See  'Additional
Shareholder  Services -- Exchange  Privilege.') Shareholders of  the Money Funds
are entitled to their pro rata share of any dividends and distributions  arising
from  that Money Fund's assets (See 'Daily Dividends, Distributions and Taxes.')
Upon redeeming  shares  of  a  Money Fund,  the  shareholder  will  receive  the
next-determined  net asset value of that Fund represented by the redeemed shares
which is  expected to  remain  constant at  $1.00  per share.  (See  'Purchases,
Redemptions and Shareholder Services.')

 
            INVESTMENT OBJECTIVES, POLICIES AND RISK CONSIDERATIONS
 
     The  investment objectives  and policies of  each Money Fund  are set forth
below. There can be, of course, no assurance that either Money Fund will achieve
its respective investment objective.
 
     The investment objectives of  each Money Fund  are fundamental policies  of
that Money Fund and may not be changed without the approval of that Money Fund's
shareholders.  Except as set forth in  'Investment Policies and Restrictions' in
the Statement of Additional  Information, or as  otherwise indicated below,  the
investment  policies of each Money Fund are  not fundamental policies and may be
changed by the  Board of Trustees  without a shareholder  vote. A more  detailed
explanation of the Money Funds' policies and the securities and instruments they
may  buy  or  use is  contained  in  the Money  Funds'  Statement  of Additional
Information, which is available upon request.
 
THE WINTHROP MUNICIPAL MONEY FUND
 
     The Municipal  Fund's investment  objectives are  to seek  maximum  current
income,  consistent with liquidity and safety  of principal, that is exempt from
income taxation  to the  extent  described below.  As  a matter  of  fundamental
policy,  the Municipal Fund pursues its  objectives by investing in high quality
municipal securities  having remaining  maturities of  one year  or less,  which
maturities  may extend  to 397 days,  and at  least 80% of  the Municipal Fund's
total assets will  be invested  in such securities  (as opposed  to the  taxable
investments  described below). However, the Municipal Fund reserves the right to
lower the percentage  to 65%
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if economic  or political  conditions warrant.  To increase the Municipal Fund's
ability to reach its investment objectives, the dollar weighted average maturity
of its  portfolio securities is always 90  days or  less. In general, securities
with longer maturities  are more vulnerable to price changes, although they  may
provide higher yields.  It is possible that  a major change in interest rates or
a default on the Municipal Fund's investments could cause their share  prices to
change.  There  can be no assurance, as  is true  with all investment companies,
that  the Municipal Fund's investment objectives will be achieved.
 
     Normally, substantially all the Municipal Fund's income will be  tax-exempt
as described below. Such income may be subject to state or local income taxes.
 
     The  municipal  securities  in  which the  Municipal  Fund  invests include
municipal notes and  short-term municipal bonds.  Municipal notes are  generally
used  to provide for  short-term capital needs and  generally have maturities of
one year or  less. Examples  include tax anticipation  and revenue  anticipation
notes,  which are generally issued in anticipation of various seasonal revenues,
bond anticipation notes, and  tax-exempt commercial paper. Short-term  municipal
bonds  may include general  obligation bonds, which are  secured by the issuer's
pledge of  its faith,  credit and  taxing  power for  payment of  principal  and
interest,  and revenue bonds,  which are generally  paid from the  revenues of a
particular facility or a specific excise or other source.
 
     The Municipal Fund may invest  in variable rate obligations whose  interest
rates  are adjusted either at predesignated periodic intervals or whenever there
is a change in the  market rate to which the  security's interest rate is  tied.
Such  adjustments minimize  changes in the  market value of  the obligation and,
accordingly, enhance the ability of the Municipal Fund to maintain a stable  net
asset  value.  Variable  rate  securities  purchased  may  include participation
interests in industrial  development bonds  which may  be backed  by letters  of
credit  from banking or  other financial institutions. The  letters of credit of
any single of such institutions in respect of all variable rate obligations will
not cover more than 5% of the  Municipal Fund's total assets in accordance  with
Rule 2a-7 of the Investment Company Act of 1940.
 
     The  Municipal Fund may  invest without limitation  in tax-exempt municipal
securities subject to  the alternative  minimum tax (the  'AMT'). Under  current
Federal  income tax law, (1) interest  on tax-exempt municipal securities issued
after August  7, 1986  which are  'specified private  activity bonds,'  and  the
proportionate  share  of  any  exempt-interest  dividends  paid  by  a regulated
investment company which receives interest from such specified private  activity
bonds,  will be  treated as an  item of tax  preference for purposes  of the AMT
imposed on individuals and corporations,  though for regular Federal income  tax
purposes  such interest  will remain fully  tax-exempt, and (2)  interest on all
tax-exempt obligations  will  be  included in  'adjusted  current  earnings'  of
corporations  for AMT  purposes. Such bonds  have provided, and  may continue to
provide, somewhat  higher yields  than  other comparable  municipal  securities.
While  the Municipal Fund may invest without limitation in securities subject to
AMT, the AMT affects only a small  percentage of all tax paying investors.  (See
'Daily Dividends, Other Distributions and Taxes.')
 
     All  of the Municipal  Fund's municipal securities at  the time of purchase
are rated within the two highest  quality ratings of Moody's Investors  Service,
Inc.  (Aaa and  Aa, MIG 1  and MIG 2  or VMIG1  and VMIG2) or  Standard & Poor's
Corporation (AAA and AA or SP-1 and SP-2), or judged by the Adviser (as  defined
under 'Management') to be of comparable quality.
 
     To  maintain  portfolio  diversification and  reduce  investment  risk, the
Municipal Fund may not: (1) borrow money except from banks on a temporary  basis
or  via entering  into reverse repurchase  agreements to be  used exclusively to
facilitate the orderly maturation  and sale of  portfolio securities during  any
periods  of abnormally  heavy redemption  requests, if  they should  occur; such
borrowings may not be used to  purchase investments; or (2) pledge,  hypothecate
or  in any manner transfer,  as security for indebtedness,  its assets except to
secure such borrowings.
 
     The   Municipal   Fund   may   also   invest   in   stand-by   commitments,
delayed-delivery  and when-issued securities, which may involve certain expenses
and  risks.  The  Municipal  Fund's custodian will maintain a segregated account
containing liquid securities having value equal

                                       4
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to,  or  greater  than, such securities. The price of such  securities, which is
generally  expressed  in  yield  terms,  is  fixed at the time the commitment to
purchase  is made, but delivery and payment for such securities takes place at a
later time. Normally the  settlement  date occurs  from  within  ten days to one
month after  the  purchase  of the  issue.  The  value of  such  securities  may
fluctuate prior to their settlement, thereby creating an unrealized gain or loss
to  the Municipal Fund. Such securities are  examples of what the Securities and
Exchange Commission (the  'SEC') considers 'illiquid  securities' because  their
settlement date occurs more than seven days after their purchase. The SEC limits
money  market funds to  hold only up to  10% of their  net assets for securities
which settle more than seven days after purchase.
 
     The Municipal Fund may also invest in municipal leases, which are leases or
installment purchases used by state and local governments as a means to  acquire
property,  equipment or facilities without  involving debt issuance limitations.
It is possible  that more than  5% of the  Municipal Fund's net  assets will  be
invested  in municipal leases which have been determined to be liquid securities
by the Municipal Fund's adviser.
 
     The taxable  investments in  which the  Municipal Fund  may invest  include
obligations  of the U.S. Government and  its agencies, high quality certificates
of deposit  and bankers'  acceptances, prime  commercial paper,  and  repurchase
agreements.
 
     To seek to reduce investment risk, the Municipal Fund may not invest in the
securities  of any  one issuer,  except the  U.S. Government,  in excess  of the
percentage of the Municipal Fund's total  assets allowed under Rule 2a-7 of  the
Investment Company Act of 1940.
 
     The Municipal Fund earns income at current money market rates and its yield
will  vary from  day to day  and generally reflects  current short-term interest
rates and other  market conditions.  It is important  to note  that neither  the
Municipal Fund nor its yields are insured or guaranteed by the U.S. Government.
 
THE WINTHROP U.S. GOVERNMENT MONEY FUND
 
     The  Winthrop U.S. Government Money Fund (the 'Government Fund') investment
objectives are to  seek maximum  current income, consistent  with liquidity  and
safety  of principal.  As a  matter of  fundamental policy,  the Government Fund
pursues its objectives by maintaining a  portfolio of high quality money  market
securities,  including the types described in the succeeding paragraph, which at
the time of investment generally have remaining maturities of one year or  less,
although maturities may extend to 397 days. The dollar weighted average maturity
of  the Government Fund's portfolio securities will  vary, but will always be 90
days or less. In general, securities with longer maturities are more  vulnerable
to price changes, although they may provide higher yields. It is possible that a
major change in interest rates or a default on the Government Fund's investments
could  cause their share prices to change. There can be no assurance, as is true
with all investment  companies, that  the Government Fund's  objectives will  be
achieved.
 
     The  securities in  which the Government  Fund invests  are: (1) marketable
obligations of, or guaranteed by, the United States Government, its agencies  or
instrumentalities (collectively, the 'U.S. Government'), including issues of the
United  States Treasury, such as bills,  certificates of indebtedness, notes and
bonds, and  issues  of  agencies and  instrumentalities  established  under  the
authority  of an  act of Congress,  including variable rate  obligations such as
floating rate notes; and  (2) repurchase agreements  that are collateralized  in
full  each day  by the  types of securities  listed above.  These agreements are
entered into with 'primary dealers' (as  designated by the Federal Reserve  Bank
of  New  York) in  U.S. Government  securities and  would create  a loss  to the
Government Fund if, in the event of a dealer default, the proceeds from the sale
of the  collateral were  less than  the repurchase  price. In  addition, if  the
seller  of repurchase agreements becomes  insolvent, the Government Fund's right
to dispose of the securities might be restricted.
 
     The Government Fund may commit up to 10% of its net assets to the  purchase
of  illiquid securities, which includes  when-issued U.S. Government securities,
whose  value  may  fluctuate  prior  to  their  settlement,  thereby creating an
unrealized gain or loss to the Government Fund.

 
                                       5
 
<PAGE>
 
<PAGE>
 
     The Government Fund  earns income  at current  money market  rates and  its
yield  will  vary from  day  to day  and  generally reflects  current short-term
interest rates and other market conditions. It is important to note that neither
the Government  Fund  nor  its  yield  is insured  or  guaranteed  by  the  U.S.
Government.
 
     To  maintain  portfolio  diversification and  reduce  investment  risk, the
Government Fund may not: (1) borrow money except from banks on a temporary basis
or via entering  into reverse repurchase  agreements to be  used exclusively  to
facilitate  the orderly maturation  and sale of  portfolio securities during any
periods of  abnormally heavy  redemption requests,  if they  should occur;  such
borrowings  may not be used to  purchase investments; or (2) pledge, hypothecate
or in any manner  transfer, as security for  indebtedness, its assets except  to
secure such borrowings.
 
     In addition to the above referenced securities, the Money Funds reserve the
right as a defensive measure to hold temporarily other types of securities which
are  permitted  by  Rule  2a-7  of  the  Investment  Company  Act  of  1940. See
'Investment Objectives' in the  Statement of Additional  Information for a  more
complete  description of the Money Funds' objectives, strategies, instruments to
be used in connection therewith and risks associated therewith.
 
                                   MANAGEMENT
 
     The Money Funds' Board of Trustees  (who, with its officers, are  described
in  the Statement of Additional Information)  has overall responsibility for the
management of the Funds.
 
     DLJ Investment  Management Corp.  (the 'Adviser'),  a Delaware  corporation
with  principal offices at 277  Park Avenue, New York,  New York 10172, has been
retained under an investment advisory agreement to provide investment advice and
to supervise the management and investment programs of the Money Funds,  subject
to the general supervision and control of the Trustees of the Funds.
 
     The  Adviser is a  wholly-owned subsidiary of  Donaldson, Lufkin & Jenrette
Securities Corporation, which is a member of  the New York Stock Exchange and  a
wholly-owned  subsidiary of Donaldson, Lufkin &  Jenrette, Inc. ('DLJ'), a major
international supplier of financial services. DLJ is an independently  operated,
indirect  subsidiary of The Equitable  Companies Incorporated, a holding company
controlled by AXA, a member of a large French insurance group. AXA is indirectly
controlled by a group of five French mutual insurance companies. The Adviser was
formed in November, 1995 for the initial purpose of acting as investment adviser
to a select group  of individual and institutional  investors, and hence, as  an
entity,  has not acted as an adviser  to other investment companies in the past.
The Adviser, however, has  hired personnel from both  within and outside of  DLJ
who  have  experience  in  the  investment  company  industry,  specifically the
operation and management of money market funds.
 
     Marybeth B. Leithead is the portfolio manager of the Municipal Fund and  is
also  a Vice President  of the Opportunity  Funds and the  Adviser. A tax-exempt
fixed income  specialist,  Ms.  Leithead  is  responsible  for  short  and  long
municipal  bond  investment  management  for  clients  of  the  Adviser  and its
affiliate, Wood  Struthers  and  Winthrop  Management  Corp.  In  addition,  Ms.
Leithead is the portfolio manager of the Winthrop Municipal Trust Fund, a series
of the Focus Funds and has been an employee of an affiliate of the Adviser since
1989.
 
     Richard  L. Glessmann is  the portfolio manager of  the Government Fund and
has been an employee  of an affiliate  of the Adviser since  1995. Prior to  his
current position, Mr. Glessmann was employed for seven years at Wells Fargo Bank
where  he was a Vice President and  Senior Portfolio Manager responsible for the
management of over $2 billion of  client assets. He also managed several  mutual
funds  that  invested  in a  broad  variety  of government  and  mortgage backed
securities.  Before   Wells   Fargo,   Mr.   Glessmann   spent   one   year   at
Citibank's   Private  Bank  and   four  years  at   Chase  Investors  Management
Corporation.
 
                                       6
 
<PAGE>
 
<PAGE>
 
     Under its  Advisory Agreement  with the  Money Funds,  the Adviser  or  its
affiliates   (i)  provide  investment  advisory  services  and  order  placement
facilities for each of the Money Funds and pays all compensation of Trustees  of
the  Money Funds who are affiliated persons  of the Adviser and (ii) furnish the
Money Funds'  management supervision  and assistance  and office  facilities  in
addition  to administrative and  other nonadvisory services for  which it may be
reimbursed. The Money Funds pay a fee of .40% of the average daily net assets of
each Money Fund to  the Adviser which  is reduced to .35%  of each Money  Fund's
average  daily net assets in excess of $1  billion. The advisory fees to be paid
by the Money Funds are similar to those paid by other money market mutual funds.
As of the date of this Prospectus, the Money Funds have not commenced operations
and, accordingly, have not paid the Adviser a fee.
 
                          EXPENSES OF THE MONEY FUNDS
 
GENERAL
 
     In addition to the  payments to the Adviser  under the investment  advisory
agreement  described above, the  Money Funds pay the  other expenses incurred in
the Money Funds' organization  and operations, including  the costs of  printing
prospectuses  and other reports to existing  shareholders; all expenses and fees
related to  registration and  filing  with the  SEC  and with  state  regulatory
authorities;  custody,  transfer  and dividend  disbursing  expenses;  legal and
auditing costs; clerical, accounting, and other office costs; fees and  expenses
of  Trustees who are  not affiliated with  the Adviser; costs  of maintenance of
existence; and interest charges, taxes, brokerage fees, and commissions.
 
     The investment advisory agreement provides that the Adviser will  reimburse
the  Money Funds up  to the amount of  its advisory fee for  the expenses of any
Money Fund (exclusive  of interest, taxes,  brokerage, expenditures pursuant  to
the distribution services agreement described below, and extraordinary expenses,
all  to the extent permitted  by applicable state law  and regulations) which in
any year exceed the limits prescribed by any state in which shares of such Money
Fund are qualified for sale.
 
DISTRIBUTION AGREEMENT
 
     Rule 12b-1 adopted  by the  SEC under the  Investment Company  Act of  1940
permits  an investment company directly or indirectly to pay expenses associated
with the distribution of its shares. Under SEC regulations, some of the payments
described below to be made by the Money Funds could be deemed to be distribution
expenses within the  meaning of  such rule. Thus,  pursuant to  Rule 12b-1,  the
Money  Funds' Trustees, including a majority of its disinterested Trustees, have
adopted separate 12b-1  Plans for the  expenses to be  incurred in  distributing
each  Money Fund's  shares (the  'Rule 12b-1  Plans') and  the Money  Funds have
entered into a Distribution Agreement (the 'Agreement') with Donaldson, Lufkin &
Jenrette Securities Corporation, the Funds' distributor (the 'Distributor'). The
Distributor  may  enter  into  service  agreements  with  other  entities.   The
Distributor is located at 277 Park Avenue, New York, New York 10172.
 

     With  respect to each Money  Fund, the maximum amount  payable by the Money
Funds under the Rule  12b-1 Plans for  distributing shares is .40  of 1% of  the
average  daily  net assets  of each  Fund  during the  year. The  current amount
payable by the Money Funds under the Rule 12b-1 Plans to the Distributor is  .25
of  1% of the average daily net assets of each Fund during the year. Pursuant to
the Agreements, the Trustees can raise  the distribution fees up to the  maximum
amount by a majority vote if the Trustees, in their opinion, feel that the raise
is in the best interest of the Money Funds and their shareholders. The Agreement
but  not  the Rule  12b-1  Plans terminate  in the  event  of assignment  of the
Agreement.

 
     An  initial  concession  or  ongoing   maintenance  fee  may  be  paid   to
broker-dealers on sales of both Money Funds' shares. Pursuant to the  Rule 12b-1
Plans, the Distributor  is then reimbursed for such  payments with amounts  paid
from the assets of such  Money Fund. The payments to the broker-dealer, although
a Money Fund 
                                       7
 
<PAGE>
 
<PAGE>
expense which is paid by  all shareholders, will only directly benefit investors
who  purchase  theirshares through a broker-dealer rather than directly from the
Money  Funds.  Broker-dealers  who  sell  shares  of the Money Funds may provide
services  to  their  customers  that are not available to investors who purchase
their shares directly from  the Money Funds. The payments to  the broker-dealers
will  continue  to be paid for as long as the related assets remain in the Money
Funds.
 
     Amounts paid under the Rule 12b-1 Plans and the Agreement are used in their
entirety to  reimburse  the Distributor  for  actual expenses  incurred  to  (i)
promote  the sale of shares  of each Money Fund by,  for example, paying for the
preparation, printing  and distribution  of  prospectuses, sales  brochures  and
other  promotional materials  sent to  prospective shareholders,  by directly or
indirectly purchasing radio, television, newspaper  and other advertising or  by
compensating  the  Distributor's  employees or  employees  of  the Distributor's
affiliates  for  their  distribution  assistance,  (ii)  make  payments  to  the
Distributor   to  compensate  broker-dealers  or  other  persons  for  providing
distribution  assistance  and  (iii)  make  payments  to  compensate   financial
intermediaries for providing administrative and accounting services with respect
to  the Money Funds' shareholders. In  addition to the concession or maintenance
fee which may be paid  to dealers or agents, the  Distributor will from time  to
time  pay additional  compensation to dealers  or agents in  connection with the
sale of shares. Such additional amounts may be utilized, in whole or in part, in
some cases together with  other revenues of such  dealers or agents, to  provide
additional  compensation to registered representatives of such dealers or agents
who sell shares of a  Money Fund. On some  occasions, such compensation will  be
conditioned  on the sale of  a specified minimum dollar  amount of the shares of
the Money Funds during a specific period  of time. Such incentives may take  the
form  of payment for meals, entertainment, or attendance at educational seminars
and associated expenses  such as travel  and lodging. Such  dealer or agent  may
elect to receive cash incentives of equivalent amounts in lieu of such payments.
The Rule 12b-1 Plans permit payments to be made in subsequent years for expenses
incurred in prior years if the Money Funds' Trustees specifically authorize such
payment.
 
     As  of the  date of  this Prospectus,  the Money  Funds have  not commenced
operations and, accordingly, have not made  payments under the Rule 12b-1  Plans
or the Agreement.
 
                PURCHASES, REDEMPTIONS AND SHAREHOLDER SERVICES
 
PURCHASES
 
     Shares  of each of  the Money Funds  will be offered  on a continuous basis
directly by the  Money Funds and  by the  Distributor, acting as  agent for  the
Money  Funds, at the respective  net asset value per  share determined as of the
close of  the  regular trading  session  of the  New  York Stock  Exchange  (the
'NYSE'),  currently  4:00  p.m., New  York  City  time, following  receipt  of a
purchase order in proper form. (See 'Net Asset Value.') The investor should send
a completed Share Purchase Application (found in this Prospectus) and enclose  a
check  in  the amount  of  the initial  investment  to the  Transfer  Agent, FPS
Services, Inc., P.O. Box 61503, King of  Prussia, PA  19406-0903, Attn: Winthrop
Mutual  Funds. (For  overnight courier  deliveries,  replace P.O.  Box  61503 on
the address label with 3200 Horizon Drive.) The account will be established once
the  application  and  check  are  received in good order. Checks should be made
payable to 'Winthrop Mutual Funds.' Checks made  payable to the  shareholder  or
another third party (third party checks) will not be accepted by the Money Funds
or  the Transfer Agent for investment. To open a new account by wire, first call
Winthrop Opportunity Funds at  1-800-225-8011  (option #2)  to obtain an account
number.  A  representative  will  instruct  you  to send  a   completed,  signed
application to
 
                                       8




<PAGE>
 
<PAGE>
                              WINTHROP MONEY FUNDS
                           SHARE PURCHASE APPLICATION
<TABLE>
- ----------------------------------------------------------------------------------------------------------------------------
 

<S>                                                        <C>
WINTHROP MONEY FUNDS                                       FOR ASSISTANCE IN FILLING OUT THIS APPLICATION CALL:
C/O FPS SERVICES, INC.                                       (800) 225-8011 (OPTION #2)
P.O. BOX 61503
(3200 HORIZON DR.)
KING OF PRUSSIA, PA 19406-0903
</TABLE>

 
(1) TYPE OF ACCOUNT                          DATE __________________, 199_______
  [ ] New Account         [ ] Existing Account #______________________________
 

(2) INVESTMENT SELECTION -- Please make checks payable to Winthrop Mutual Funds.

 
<TABLE>
       <S>                               <C>                          <C>
       WINTHROP FUND NAME                AMOUNT                       Initial Investment Minimum per Money Fund: $250;
       Municipal Money Fund (042)        $___________                 Subsequent Investment Minimum: $25.
       U.S. Government Money Fund (043)  $___________                 Minimums are waived for SEP, SIMPLE, 401K,
           Total                         $___________                 403B and 457 plans.
</TABLE>
<TABLE>
<C>    <S>
  (3)  SHARE REGISTRATION
       [ ] Individual__________________________________    _________________________________________________________________
                                   Name                          *Joint Owner, if any
       [ ] Gift to Minor_______________________________    as custodian for_________________________________________________
                            Name of Custodian                                  Name of minor
           under the_______________ Uniform Gift to Minors Act. (Reference social security #
                        State                                    of minor in space provided below)
             
       [ ] Other____________________________________________________________________________________________________________
                                  Name of corporation, organization, trust, etc.
       Address______________________________________________________________________________________________________________
                                                             Street
              ______________________________________________________________________________________________________________
                            City                             State                     Zip Code

       Phone Number (________) _____________Social Security or Taxpayer ID #**______________________________________________
       *  In the event of co-owners, a joint tenancy with right of survivorship will be assumed unless otherwise indicated.
       ** Required to open an account.
 
 
</TABLE>


<TABLE>
<C>    <S>
  (4)  CERTIFICATION  OF  TAXPAYER  IDENTIFICATION NUMBER  --  Required by
       federal tax  law to  avoid 31%  backup withholding:  By signing,  I
       certify  under  penalties of  perjury that  the social  security or
       taxpayer identification number entered above is correct and that  I
       have  not been  notified by  the IRS  that I  am subject  to backup
       withholding unless I have checked the box below.

       [ ] I am subject to backup withholding.
       THE INTERNAL REVENUE SERVICE DOES NOT REQUIRE YOUR CONSENT TO ANY
       PROVISION OF THIS DOCUMENT OTHER THAN THE CERTIFICATIONS REQUIRED
       TO AVOID BACKUP WITHHOLDING.

       ______________________________________________     __________________________________________________________________
       Signature                                           Date
 
  (5)  SHAREHOLDER   AUTHORIZATION   (MUST   BE   SIGNED   BY   APPLICANT)
       TELEPHONE  EXCHANGE PRIVILEGE  -- I  understand that  unless I have
       checked the box below, this privilege will automatically apply.
       [ ] I do not elect the telephone exchange privilege.
       (NOTE: Telephone exchanges may  only be processed between  accounts
       that have identical registrations)
       If  I choose to use Winthrop's telephone exchange privilege, please
       direct   my   exchange    into   the    following   share    class:
       [ ] A or [ ] B (check one).
       TELEPHONE  REDEMPTION  PRIVILEGE --  I  hereby authorize  the Money
       Funds or its transfer agent to effect the redemption of Fund shares
       for my account according to my telephone instructions or  telephone
       instructions from my Broker/Agent as follows:
       [  ] Mail Redemption proceeds  to the name and  address in which my
       Fund Account is registered.
       [ ] Deposit  via automated  clearing house to  the commercial  bank
       referenced in Section 11.
       [  ] Wire Redemption proceeds to  the Bank referenced in Section 11
       and charge my Fund account the applicable wire fee.
       (NOTE:  The  maximum  telephone   redemption  amount  is   $50,000.
       Telephone  redemption checks  will only be  mailed to  the name and
       address of record; and the address must not have changed within the
       last 30 days).
       By  selecting any of  the above telephone  privileges, I agree that
       neither the Money Funds, the  Equity Funds, the Adviser, the  Focus
       Funds,  nor any  transfer agent  for any  of the  foregoing will be
       liable for  any loss,  injury, damage  or expense  as a  result  of
       acting  upon telephone instructions purporting  to be on my behalf,
       that the Money  Funds reasonably  believe to be  genuine, and  that
       neither  the Money Funds nor any such party will be responsible for
       the authenticity of such telephone instructions. I understand  that
       any  or all of  these privileges may  be discontinued by  me or the
       Money Funds at  any time.  I understand  and agree  that the  Money
       Funds  reserve the right  to refuse any  telephone instructions and
       that my investment dealer or agent reserves the right to refuse  to
       issue  any telephone instructions I may  request.
       I am of  legal age  and capacity  and have  received and  read  the
       Prospectus  and agree to its terms.
       The  person(s),  if any,  signing on behalf  of the investor  (i.e.
       corporation, organization, trust, etc.) represent and warrant  that
       they are authorized to sign this application and  purchase, redeem,
       or exchange shares on behalf of such investor.


       ______________________________________________     __________________________________________________________________
       Signature                                           Date
       ______________________________________________     __________________________________________________________________
       Signature                                           Date

       (If  an  institution,  please  include  documentation  establishing
       authorized signatories).
 

  (6)  FOR DEALER USE ONLY -- We guarantee  the signature(s) set forth in Section 5,  as
       well as the legal capacity of the shareholder.
       Dealer Name_________________________________________   Dealer No.____________________________________________________
       Branch Office Name__________________________________   Branch Office No._____________________________________________
       Branch Office Address________________________________________________________________________________________________
       Representative's Name_______________________________   Representative's No.__________________________________________
       Representative's Phone No. (_________) __________   Authorized Signature_____________________________________________
       ------------
       FOR DIVIDEND INSTRUCTIONS AND OTHER ACCOUNT OPTIONS, PLEASE COMPLETE THE REVERSE
       SIDE OF THIS PURCHASE APPLICATION.
- ----------------------------------------------------------------------------------------------------------------------------
 

  (7)  CHECKWRITING APPLICATION / SIGNATURE CARD
       Check  the  Winthrop Money  Fund(s) that  are to  have checkwriting
       privileges. Minimum check amount: $100.
       [ ] Municipal Money Fund                             [ ] U.S. Government Money Fund
       _________________________________________            ________________________________________________________________
       Fund or Brokerage Account Number (if applicable)     Fund or Brokerage Account Number (if applicable)

       Checkwriting is  available only  for  accounts holding  shares  not
       subject to Winthrop's contingent deferred sales charge.
       By   signing   this  checkwriting   privilege   authorization,  the
       undersigned agree(s): (1) the use of the Money Funds'  checkwriting
       privilege  shall  be subject  to all  of  the terms  and conditions
       contained in the Money Funds' prospectus in effect at the time each
       check is presented, and to the  rules and regulations as set  forth
       on the reverse side of this form; and (2) each signatory guarantees
       the genuineness of the other's signature.
       All registered owner(s) of the Fund(s) must sign below:



____________________________________________________________________________________________________________________________
          Account Name(s) as Registered             Social Security Number                     Authorized Signature(s)*
____________________________________________________________________________________________________________________________
 
____________________________________________________________________________________________________________________________
 
____________________________________________________________________________________________________________________________
 
____________________________________________________________________________________________________________________________
 
____________________________________________________________________________________________________________________________
 
____________________________________________________________________________________________________________________________
 

       *  For joint accounts, all owners, or  their legal representatives must sign this card.
       [ ] Check here if all signatures are required on checks.
       [ ] Check here if all signatures are not required on checks and indicate number of signatures required___________ .
 
</TABLE>
 
 

<PAGE>
 
<PAGE>
                              WINTHROP MONEY FUNDS
                           SHARE PURCHASE APPLICATION
<TABLE>
- --------------------------------------------------------------------------------
<C>    <S>
  (8)  DIVIDEND OPTIONS  --  If no instructions are  given, all distributions will be reinvested.
       INCOME DIVIDENDS: (select one)
 
</TABLE>

<TABLE>
<C>    <S>                                           <C>                              <C>
       [ ] Reinvest dividends                        [ ] Pay dividends in cash        [ ] Use Dividend Direction Option
 
       CAPITAL GAINS DISTRIBUTION: (select one)
       [ ] Reinvest capital gains                    [ ] Pay capital gains in cash    [ ] Use Dividend Direction Option
 
       [ ] DIVIDEND   DIRECTION  OPTION  --  I/we  hereby   authorize  and  request  that  my/our
           distributions be either (a) paid to the person and/or address designated  below or (b)
           reinvested into my/our account which we currently maintain in another Winthrop Fund:
 
        a) Name____________________________________________  b) Winthrop Fund_______________________________________________

        Account or Policy #________________________________  Existing Acct. #_______________________________________________
           (if applicable)
        Address____________________________________________  Existing Share Class: [ ] A or [ ] B (check one)*

        City, State, Zip___________________________________  * Dividends directed between Funds must be within the same
                                                               share class.

       (NOTE:  Dividend  checks  that are  returned  'not  forwardable' will  be  reinvested in
       additional shares of the Fund at  the current net asset value  on the date the check  is
       received.)
</TABLE>
 
<TABLE>
<S>    <C>
  (9)  [  ]AUTOMATIC MONTHLY INVESTMENT PLAN* -- I/we hereby authorize you  to draw on my/our bank account an 
           amount of $_______ ($25 minimum) for  an    investment  in the  Money Funds beginning  on the
           10th, 15th or  20th (circle  one) day  and  continuing on  that same  day  each  month.

       ____________________________________________________  _______________________________________________________________
                                  Fund Name(s)                                        Bank Account Number
       _____________________________________________________________________________________________________________________
                                               Branch Name and Address of Bank
 
</TABLE>
 

<TABLE>
<S>    <C>                                <C>                                 <C>            <C>    <C>
       The Fund requires signatures of bank account owners exactly as they appear on bank records:
       ___________________________________________  ______________  _____________________________  __________________
       Individual Account Owner                          Date       Joint Account Owner                  Date
       *(ATTACH  VOIDED CHECK --  Include a blank check  from the bank account  from which your investment will be made. Write
       'VOID' across the face of the check, and attach it to this form.)
 
 (10)  AUTOMATIC EXCHANGE PLAN OR SYSTEMATIC CASH WITHDRAWAL PLAN -- ($50 minimum). The undersigned requests that Winthrop  or
       any transfer agent of Winthrop (as their agent) make regular exchanges and/or withdrawals beginning the 5th, 10th, 15th
       or 25th (circle one) day of _________  19___.
                                    (month)
       CHECK THE BOX(ES) BELOW INDICATING THE PLAN(S) YOU WOULD LIKE TO PARTICIPATE IN:
 
       [ ] AUTOMATIC EXCHANGE PLAN
       FROM                               TO
                                                                              Share Class*               Frequency
                   Fund Name                          Fund Name               (Circle One)    Amount   (Circle One)**
                   __________                         _________               ____________   ________  ______________
       __________________________________  _________________________________     A or B    _____________    M Q S A
       __________________________________  _________________________________     A or B    _____________    M Q S A
       __________________________________  _________________________________     A or B    _____________    M Q S A
       __________________________________  _________________________________     A or B    _____________    M Q S A

       *  If your  account in  the Winthrop  Money Funds has  been established  pursuant to  a previous  exchange from another
       Winthrop Fund your  automatic exchange  selection must be  directed to  the same class  as your  initial investment  in
       Winthrop.
       ** Monthly, Quarterly, Semi-Annual, or Annual processing.
       (Note:  Winthrop's  Automatic  Exchange  Plan  may  be  directed to  multiple funds  within  the Winthrop Focus Funds or
       Winthrop Opportunity  Funds. Automatic  Exchanges will  only be  available for  participating  accounts  with  identical
       registrations.)
 
       [ ]SYSTEMATIC CASH WITHDRAWAL PLAN -- (Minimum initial purchase  $10,000).
 
             MONEY FUND NAME                       AMOUNT
             ---------------                       ------

       ______________________________________   _______________   [ ] monthly     [ ] quarterly   [ ] semi-annually   [ ] annually

       ______________________________________   _______________   [ ] monthly     [ ] quarterly   [ ] semi-annually   [ ] annually
 


       Payments under this plan should be sent:
       [  ] by check to the name  and address in which my/our fund account is registered.
       [  ] by automated clearing house  'ACH' deposits to my Bank  account referenced in Section 11.
       [  ] by wire to  the Bank and account  referenced in Section 11 and  charge my  Money Fund account the 
            applicable   wire   fee.
       [  ] by   check   to  the   Special   Payee   referenced  below:
       Name of Payee_______________________________________    Account or Policy# ____________________________________________
                                                                                             (if applicable)
       Address________________________________________________________________________________________________________________
           (NOTE: Systematic withdrawals selected on a semi-annual or annual basis are not eligible for Winthrop's CDSC waiver)
 
 (11)  BANK ACCOUNT INFORMATION* (To be completed if applicable under  Sections 5 or 10).
       ____________________________________________________  _______________________________________________________________
                           Name of Bank                                        Branch (if applicable)
       ____________________________________________________  _______________________________________________________________
             Name in which Bank Account is Established                          Bank Account Number

       *(ATTACH VOIDED  CHECK --  Include  a blank  check from  your  bank   account.  Write 'VOID' across the face
       of the check, and attach it  to this form).
 
 (12)  CONSOLIDATED ACCOUNT STATEMENTS  -- If  you prefer  to receive  one quarterly combined  statement instead of
       individual  account  statements please reference the  Winthrop Fund name (include  share
       class) and account numbers that you would like consolidated.
       ____________________________________________________  _______________________________________________________________
                  Fund Name/Class/Account Number                             Fund Name/Class/Account Number
       ____________________________________________________  _______________________________________________________________
                  Fund Name/Class/Account Number                             Fund Name/Class/Account Number

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

                       CHECKWRITING TERMS AND CONDITIONS

1. REDEMPTION  AUTHORIZATION:  The Signatory(s) whose signature(s) appear on the reverse side, intending to be legally bound,
   hereby agree each with the other and with United  Missouri Bank N.A.  ('Bank')  that the Bank is appointed  agent for such
   person(s)  and, as such agent,  is directed to request FPS Services,  Inc., the Transfer Agent of the Winthrop Money Funds
   (each  a 'Fund' and collectively the 'Funds'), to redeem shares of the Fund registered  in  the  name of such Signatory(s)
   upon receipt of, and in the amount of, checks drawn upon the above numbered account.  The Fund or its Transfer Agent shall
   deposit the proceeds of such redemptions in said account or otherwise arrange for application of such proceeds to payments
   of  said  checks. The Bank and the Transfer Agent are expressly authorized to commingle such proceeds in this account with
   the proceeds of  the redemption of the shareholders  of the Fund. The  Signatory(s)  understand that the Bank may also act
   as an agent and custodian for the Fund. The Bank and Transfer Agent are expressly authorized to honor checks as redemption
   instructions  hereunder and may require signature guarantees in accordance with the policies stated in the Prospectus, but
   neither the Fund's Transfer Agent, the Bank, the Funds, the  Funds' Adviser nor any clearing agent of the  foregoing shall
   be liable for any loss or liability resulting from the absence of any such guarantee.
 
2. CHECK PAYMENT: The Signatory(s)  authorize and direct the Bank to pay each check presented hereunder,  subject to all laws
   and Bank rules and regulations  pertaining to checking  accounts.  In addition,  the Signatory(s) agree that: (a) No check
   shall be issued or honored,  or any redemption  effected,  in an amount less than stated in the  Prospectus;  (b) No check
   shall be issued or honored, or redemption  effected,  for any amounts represented by shares unless payment for such shares
   has been made in full and any checks given in such payment have been collected  through normal  banking  channels;  (c) No
   check shall be honored  unless the Fund has provided the Bank,  from the proceeds of redemption  or  otherwise,  collected
   funds for the payment of such check;  (d) Checks issued  hereunder  cannot be cashed over the counter at the Bank; and (e)
   Checks  shall be subject to any further  limitations  set forth in the  Prospectus  issued by the Fund  including  without
   limitation any additions, amendments and supplements thereto.
 
3. DUAL  OWNERSHIP: If more than one person is indicated as a registered owner of the  shares  of the Fund,  such as by joint
   ownership  ownership in common  or tenants by the entirety,  then (a) each registered owner must sign the signature  card,
   (b) each  registered owner must sign each check issued hereunder unless the parties have  indicated on  the front of  this
   card that not all Signatory(s) need sign,  in which case the Bank and  the Transfer Agent are  authorized to  act upon the
   indicated number of signatures, and (c) each Signatory guarantees to Bank and Transfer  Agent the genuineness and accuracy
   of the signature of the other Signatory(s).
 
4. TERMINATION:  The Bank may at any time terminate this account,  related share redemption service and Bank's agency for the
   Signatory(s)  hereto  without prior notice by Bank to any of the Signatory(s). The  Funds may  terminate this checkwriting
   privilege in accordance with the procedures stated in the Prospectus.

 
5. HEIRS AND ASSIGNS:  These terms and conditions shall bind the respective heirs,  executors,  administrators and assigns of
   the Signatory(s).

</TABLE>

<PAGE>
 
<PAGE>
the Transfer  Agent.  Accounts cannot  be  opened without  a  completed,  signed
application  and a  fund account  number. Contact  your bank  to arrange  a wire
transfer to:
 
     United Missouri Bank KC NA
     ABA #10-10-00695
     For: FPS Services, Inc.
     A/C #98-7037-0719
     Attn: Winthrop Mutual Funds
 
     Your wire instructions must also include:
 
      --   the name of the Fund in which the money is to be invested,
      --   your account number at the Fund, and
      --   the name(s) of the account holder(s).
 
Investors who purchase shares of the Money Funds through a wire transfer will be
eligible to receive the daily dividend declared  on the date of purchase if  the
Transfer  Agent is notified of  such purchase by 12:00  Noon and wired funds are
received by the Transfer Agent by 4:00 p.m. (See 'Daily Dividends, Distributions
and Taxes.')
 
     Investors may also open accounts via their securities dealer. In  addition,
securities  dealers may  offer an  automatic sweep for  the shares  of the Money
Funds in the operation of cash accounts  for its customers. Shares of the  Money
Funds  purchased through an automatic sweep by 1:00 p.m. are eligible to receive
that day's daily  dividend. Contact  your securities  dealer to  determine if  a
sweep is available and what the sweep parameters are.
 

     The  minimum initial and  subsequent investment in each  Money Fund is $250
and $25, respectively.  (For example,  an investor  wishing to  make an  initial
investment  in shares of both  Money Funds would be  required to invest at least
$250 in each  Money Fund.) Full  and fractional  shares will be  credited to  an
investor's  account in the amount of the investment. Share certificates will not
be issued for  full or fractional  shares of  the Money Funds.  Each Money  Fund
reserves  the right to reject  any initial or subsequent  investment in its sole
discretion. Shareholder accounts established on behalf of the following types of
plans will  be exempt  from  the Money  Fund's  minimum initial  investment  and
minimum subsequent investment requirements: (i) retirement plans qualified under
section  401(k) of the Code; (ii) plans described in section 403(b) of the Code;
(iii) deferred compensation  plans described in  section 457 of  the Code;  (iv)
simplified  employee pension (SEP) plans; and  (v) savings incentive match plans
for employees (SIMPLE).

 
     Existing shareholders wishing to purchase additional shares of a Money Fund
may use an investment stub found at  the bottom of the Money Fund's  Shareholder
Statement  form or, if  one is not available,  they may send  a check payable to
such Money  Fund (with  Fund  Account information  referenced) directly  to  the
Transfer  Agent,  FPS  Services,  Inc.,  P.O. Box  61503,  King  of  Prussia, PA
19406-0903, Attn:  Winthrop Mutual  Funds.  (For overnight  courier  deliveries,
replace  P.O. Box 61503 on the address  label with 3200 Horizon Drive.) Existing
shareholders may  also purchase  additional shares  via wire  by contacting  and
providing  the Fund Account information to  the Transfer Agent and following the
wire instructions above.
 
     Further information and  assistance is  available by  contacting the  Money
Funds  at  the address  or telephone  number listed  on the  cover page  of this
Prospectus.
 
REDEMPTIONS
 
     Shares of the Money Funds  may be redeemed at  a redemption price equal  to
the  net asset value per share, as next  computed as of the close of the regular
trading session of the NYSE, currently 4:00 p.m., New York City time,  following
the  receipt in proper form by the Money Fund of shares tendered for redemption.
(See 'Net Asset Value.')
 
     The value of a shareholder's shares on redemption though expected to remain
at $1.00 per  share may be  more or  less than the  cost of such  shares to  the
shareholder,  depending upon the value of a Money Fund's portfolio securities at
the time of such redemption or repurchase.  Shares do not earn dividends on  the
day  a redemption is  effected. (See 'Daily  Dividends, Distributions and Taxes'
for a discussion of the tax consequences of a redemption.)
 
     To redeem shares, the registered owner or owners should forward a letter to
the Money Funds containing a request for  redemption of such shares at the  next
 
                                       9
 
<PAGE>
 
<PAGE>
determined  net asset value per share.  Alternatively, the shareholder may elect
the right to redeem shares by telephone. If you wish to have Federal funds wired
the same day as your telephone  redemption request, make sure that your  request
will  be  received by  the Money  Funds  prior to  12:00 Noon.  (See 'Additional
Shareholder Services  -- Telephone  Redemption and  Exchange Privilege.')  If  a
shareholder's  securities dealer  offers an  automatic sweep  service, the sweep
will automatically transfer from the Money Fund account sufficient cash to cover
any debt balance that may occur in your cash account. Shares of the Money  Funds
redeemed  prior to 1:00 p.m. through an automatic sweep service will be eligible
for same day federal funds wiring.
 
     If the  total value  of the  shares  being redeemed  exceeds $50,000  or  a
redemption request directs proceeds to a party other than the registered account
owner(s),  the signature or signatures on the  letter or the endorsement must be
guaranteed by an  'eligible guarantor  institution' as defined  in Rule  17Ad-15
under  the  Securities Exchange  Act  of 1934.  Eligible  guarantor institutions
include banks, brokers, dealers,  credit unions, national securities  exchanges,
registered  securities associations, clearing agencies and savings associations.
A  broker-dealer  guaranteeing  signatures  must  be  a  member  of  a  clearing
corporation  or maintain net capital of at least $100,000. Credit unions must be
authorized to issue signature guarantees. Signature guarantees will be  accepted
from  any  eligible  guarantor  institution which  participates  in  a signature
guarantee program.  Additional  documents  may be  required  for  redemption  of
corporate, partnership or fiduciary accounts.
 

     The  requirement for  a guaranteed signature  is for the  protection of the
shareholder in  that it  is  intended to  prevent  an unauthorized  person  from
redeeming shares and obtaining the redemption proceeds.

 
     A  Money Fund may request in writing  that a shareholder whose account in a
Money Fund has an aggregate  balance less than $250  increase his account to  at
least  that amount within 60 days. If the shareholder fails to do so, such Money
Fund reserves the  right to  close such  account and  send the  proceeds to  the
shareholder.  A Money Fund will not redeem involuntarily any shareholder account
based solely on the market movement of such Money Fund's shares.
 
     The right of redemption may  not be suspended or  the date of payment  upon
redemption  postponed  for more  than seven  days after  shares are  tendered in
proper form, except for any period during  which the NYSE is closed (other  than
customary  weekend and holiday closings) or during which trading on the exchange
is deemed to  be restricted under  rules of the  SEC, or for  any period  during
which  an  emergency (as  determined by  the SEC)  exists as  a result  of which
disposal by  a  Money  Fund  of  its  portfolio  securities  is  not  reasonably
practicable,  or as  a result of  which it  is not reasonably  practicable for a
Money Fund to determine the value of its net assets, or for such other period as
the SEC  may by  order permit  for the  protection of  shareholders.  Generally,
redemption  will  be  made by  payment  in  cash or  by  check.  For information
concerning circumstances  in  which  redemptions may  be  effected  through  the
delivery  of  in  kind portfolio  securities,  see the  Statement  of Additional
Information.
 
ADDITIONAL SHAREHOLDER SERVICES
 
     Exchange Privilege. Shares of each Money  Fund can be exchanged for  shares
of the other Money Fund. Shareholders whose initial investment was directly into
a  Money Fund may exchange such shares into  either class of the Equity Funds or
the Focus Funds. Shares  of each Money Fund  established pursuant to  Winthrop's
exchange  privilege will be eligible for exchange into the Equity Funds or Focus
Funds provided that the exchange is directed into the same class of shares  upon
which  the  initial  investment was  made.  Exchanges  may be  made  by  mail or
telephone (see  'Additional Shareholder  Services  -- Telephone  Redemption  and
Exchange  Privilege'). Unless otherwise indicated  in the initial Share Purchase
Application or  by written  notice to  the Money  Funds or  its Transfer  Agent,
shareholders  whose initial investment  was invested directly  into a Money Fund
will, upon an exchange request, automatically  be exchanged into Class A  shares
of  the requested Equity  Funds or Focus  Funds. The exchange  privilege for the
Equity Funds and the Focus Funds is available only in states in which shares  of
the  relevant Equity Fund  or Focus Fund  may be legally  sold. Prospectuses for
each
 
                                       10
 
<PAGE>
 
<PAGE>
of the Equity  Funds and the  Focus Funds may  be obtained from  the address  or
telephone  number listed on  the cover page  of this Prospectus.  An exchange is
effected on the basis of  each Money Fund's relative  net asset value per  share
next  computed  following  receipt  of  an  order  for  such  exchange  from the
shareholder.
 
     The Money Funds impose no separate charge for exchanges. A shareholder will
not be assessed any contingent deferred sales charge at the time of an  exchange
between  any of the Money Funds, Equity Funds or Focus Funds. However, shares of
the Money  Funds  established  through  an  exchange  of  shares  subject  to  a
contingent  deferred sales charge will be charged at the time of redemption. The
period of time during which a shareholder owns shares in any of the Money Funds,
Equity Funds or Focus Funds will be used to determine the applicable  contingent
deferred sales charge. A shareholder will pay a higher 12b-1 Fee when exchanging
shares  of the Money Funds (.25 of 1%  annually) for Class A shares of the Focus
Funds (.30 of 1% annually) or Class B shares of the Equity Funds or Focus  Funds
(1% annually).
 
     There  is no sales load associated with  the purchase and sale of shares of
the Money Funds.  However, a shareholder  may be subject  to sales charges  upon
exchanging  shares of the Money Funds for Class A shares of the Equity Funds and
Focus Funds. Currently, Class A shares of the Equity Funds and Focus Funds  have
initial  sales loads of 5.75%  and 4.75%, respectively, while  Class B shares of
the Equity Funds  and Focus  Funds are subject  to a  contingent deferred  sales
charge  which declines from 4% during the first year of investment to zero after
four years. A Prospectus describing the sales charges associated with either the
Equity Funds or Focus Funds can be obtained from the address or phone number  at
the beginning of this Prospectus.
 
     The   exchange  privilege  is  intended  to  provide  shareholders  with  a
convenient way to switch  their investments when  their objectives or  perceived
market  conditions  suggest a  change. The  exchange privilege  is not  meant to
afford shareholders an investment vehicle to play short term swings in the stock
market by  engaging in  frequent transactions  in and  out of  the Money  Funds,
Equity  Funds  and  Focus  Funds.  Shareholders  who  engage  in  such  frequent
transactions may be  prohibited from  or restricted in  placing future  exchange
orders.
 
     Shareholders should be aware that an exchange is treated for federal income
tax purposes as a sale and purchase of shares which may result in realization of
a gain or loss.
 
     Exchanges of shares are subject to the other requirements of the applicable
fund  into which  exchanges are  made. Annual  fund operating  expenses for such
other fund may be higher than the funds exchanged from.
 
     Automatic Monthly Investment Plan. Any  shareholder may elect on the  Share
Purchase   Application  to   make  additional   investments  in   a  Money  Fund
automatically, by  authorizing the  Money  Funds to  draw on  the  shareholder's
account regularly by check.
 
     A  shareholder may change the  date (either the 10th,  15th or 20th of each
month) or amount  (subject to  a minimum of  $25) of  the shareholder's  monthly
investment at any time by letter to the Money Funds at least three business days
before  the change  becomes effective.  The plan may  be terminated  at any time
without penalty by the shareholder or the Money Funds.
 
     Automatic Exchange Plan. Shareholders may authorize Winthrop to exchange an
amount established in advance automatically for  shares of the other Money  Fund
or  shares  of  the  Equity  Funds  or  Focus  Funds  on  a  monthly, quarterly,
semi-annual or  annual  basis under  an  Automatic Exchange  Plan.  The  minimum
exchange  into another Winthrop  Fund under the Automatic  Exchange Plan is $50.
These exchanges are  subject to the  terms of the  Exchange Privilege  described
above (see 'Additional Shareholder Services -- Exchange Privilege').
 
     Dividend  Direction Option.  Shareholders may  elect on  the Share Purchase
Application to have their dividends paid  to another individual or directed  for
reinvestment  into the other Money Fund or  into the Equity Funds or Focus Funds
provided that  an existing  account in  such  other fund  is maintained  by  the
shareholder.
 
                                       11
 
<PAGE>
 
<PAGE>

     Systematic Withdrawal Plan. Any shareholder who owns or purchases shares of
a  Money Fund having a current net asset value of at least $10,000 may establish
a systematic withdrawal plan under which  the shareholder or a third party  will
receive  payment by check in a stated amount  of not less than $50 on a monthly,
quarterly, semi-annual or annual basis. A contingent deferred sales charge which
may otherwise be imposed  on a withdrawal redemption  (via an exchange from  the
Equity  Funds or Focus Funds) will be waived in connection with redemptions made
pursuant to  Winthrop's  systematic withdrawal  plan  up  to 1%  monthly  or  3%
quarterly of an account (excluding dividend reinvestment) not to exceed 10% over
any  12-month rolling period. Systematic withdrawals elected on a semi-annual or
annual basis are not eligible for the waiver.

 

     Checkwriting Privileges. Shareholders may  redeem shares by writing  checks
against  their account balance for at least $100. Investments in the Money Funds
will continue to earn dividends until a shareholder's check is presented to  the
Money  Funds for payment. Checks  will be returned by  the Money Funds' Transfer
Agent  if  there  are  insufficient  shares  to  meet  the  withdrawal   amount.
Shareholders  should not attempt to close an  account by check because the exact
balance at  the time  the check  clears  will not  be known  when the  check  is
written.  There is currently no charge to shareholders for checkwriting, but the
Money Funds reserve the right to impose a charge in the future. The Money  Funds
may modify, suspend or terminate checkwriting privileges at any time upon notice
to  shareholders and will  terminate checkwriting privileges  without notice for
accounts whose  assets are  exchanged  completely out  of  the Money  Funds.  In
addition,  United  Missouri  Bank  N.A.,  as agent  for  the  Transfer  Agent in
processing redemptions via  the checkwriting  privilege, reserves  the right  to
terminate  checkwriting privileges at  any time without  notice to shareholders.
Checkwriting privileges  will not  be available  for accounts  whose shares  are
subject to a contingent deferred sales charge.

 
     Telephone  Redemption and Exchange Privilege.  A shareholder is eligible to
withdraw up to $50,000  per day from such  shareholder's account, via  telephone
orders (toll free) (800) 225-8011 given to the Money Funds by the shareholder or
the  shareholder's investment dealer of record.  A shareholder may also exchange
assets via telephone from such shareholder's account  to the Class A or Class  B
shares  of  the  Equity Funds  and  Focus  Funds. Each  Money  Fund  will employ
reasonable procedures to confirm that instructions communicated by telephone are
genuine. Such procedures  include the  requirement that  redemption or  exchange
orders  must include the account name and  the account number as registered with
the Money Funds. The minimum amount for  a wire transfer is $1,000. Proceeds  of
telephone  redemptions may also be  sent by automated clearing  house funds to a
shareholder's designated bank account. Neither the Money Funds, the Adviser, the
Equity Funds, the Focus Funds, nor any  transfer agent for any of the  foregoing
will  be responsible for  following instructions communicated  by telephone that
are reasonably believed to be genuine and, accordingly, investors bear the  risk
of loss. The Telephone Exchange Privilege will be offered automatically unless a
shareholder declines such option on the Share Purchase Application or by writing
to  the Money Funds'  Transfer Agent at the  address listed in  the back of this
Prospectus.
 
     Timing of Redemptions and Exchanges. If a redemption or exchange order  for
a  Money Fund is received on a Money Fund Business Day prior to the close of the
regular session of the NYSE,  which is generally 4:00  p.m. New York City  time,
the proceeds will be transferred as soon as possible, normally on the next Money
Fund  Business Day, and shares of each Money Fund will be priced that Money Fund
Business Day. If the redemption or exchange order is received after the close of
the regular session of the  NYSE, shares of each Money  Fund will be priced  the
next Money Fund Business Day and the proceeds will be transferred the next Money
Fund Business Day after pricing. A shareholder also may request that proceeds be
sent by check to a designated bank. Exchanges are made without any charge by the
Money Funds.
 
     Purchases  by  check may  not be  redeemed by  a Money  Fund until  after a
reasonable time  necessary to  verify  that the  purchase  check has  been  paid
(approximately ten Money Fund Business Days from receipt of the purchase check).
When  a purchase is  made by wire  and subsequently redeemed,  the proceeds from
such
 
                                       12
 
<PAGE>
 
<PAGE>
redemption normally will not be transmitted  until two Money Fund Business  Days
after  the purchase  by wire.  Bank acknowledgment  of payment  initialed by the
shareholder may shorten delays.
 
     Additional information concerning these Additional Shareholder Services may
be obtained by  contacting the  Money Funds' Transfer  Agent at  the address  or
telephone number listed on the cover page of this Prospectus.
 
                                NET ASSET VALUE
 
     The  net asset value per  share for purchases and  redemptions of shares of
each Money Fund  is determined as  of the close  of the regular  session of  the
NYSE, which is generally 4:00 p.m., New York City time, on each day that trading
is  conducted during  such session  on the  NYSE. In  accordance with  the Money
Funds' Agreement and Declaration of Trust and By-Laws, net asset value for  each
Money  Fund is determined separately by dividing  the value of each Money Fund's
net assets less its liabilities, by the total number of each Fund's shares  then
outstanding.  The Net Asset Value is expected  to be maintained at a constant at
$1.00 per share  although this  price is not  guaranteed. For  purposes of  this
computation,  the  securities  in  each Money  Fund's  portfolio  are  valued at
amortized cost, which  minimizes the effect  of changes in  a security's  market
value and helps maintain a stable $1.00 per share price. All expenses, including
the fees payable to the Adviser, are accrued daily.
 
     Events  affecting the  values of  investments that  occur between  the time
their prices are determined and 4:00 p.m. on each day that the NYSE is open will
not be reflected  in the net  asset value of  a Money Fund's  shares unless  the
Adviser, under the supervision of such Fund's Board of Trustees, determines that
the  particular event would materially affect net  asset value. As a result, the
net asset value of a Money Fund's  shares may be significantly affected by  such
trading on days when a shareholder has no access to such Money Fund.
 
                    DAILY DIVIDENDS, DISTRIBUTIONS AND TAXES
 
     Dividends  from net investment income are  declared daily and paid monthly.
Net investment income  consists of  all accrued  interest income  on Money  Fund
assets  less the Money Fund's expenses applicable to that dividend period. There
is no fixed dividend rate and there can  be no assurance that a Money Fund  will
distribute  any net  investment income. The  amount of any  distribution paid by
each Money Fund depends upon  the realization by the  Money Fund of income  from
that Money Fund's investments. All distributions will be made to shareholders of
a Money Fund solely from assets of that Money Fund.
 
     Distributions  by the Money Funds may also  be subject to certain state and
local taxes. Each year, by January 31, the Money Funds will send tax information
stating amount and type of all its distributions for the year just ended.
 
     Each Money Fund intends to qualify as a regulated investment company  under
Subchapter M of the Code, so that it will not be liable for federal income taxes
to the extent that its net taxable income and net capital gains are distributed.
 
                                RETIREMENT PLANS
 
     Each  of the Money Funds  may be a suitable  investment vehicle for part or
all of the assets held in various tax-sheltered retirement plans, such as  those
listed below. Semper Trust Company serves as custo-
 
                                       13
 
<PAGE>
 
<PAGE>

dian  under the  Individual Retirement Account  ('IRA') prototype  and under the
prototype retirement plan and charges an  annual account maintenance fee of  $15
per  participant, regardless of  the number of  Winthrop Funds selected. Persons
desiring information concerning these plans should write or telephone the  Money
Funds  or the  Money Funds'  Transfer Agent. While  the Money  Funds reserve the
right to  suspend  sales  of their  shares  in  response to  conditions  in  the
securities  markets  or  for other  reasons,  it  is anticipated  that  any such
suspension of sales would not apply to the types of plans listed below.

 
INDIVIDUAL RETIREMENT ACCOUNTS
 
     The Adviser has available a prototype form of IRA for investment in  shares
of  any one  or more Money  Funds. An  individual with a  non-working spouse may
deduct a contribution  to an IRA  of up to  $2,250, provided that  no more  than
$2,000 may be contributed for either spouse. The deduction for a contribution to
an  IRA is phased  out if an  unmarried individual has  adjusted gross income in
excess of $25,000, a married couple filing  jointly in excess of $40,000 or  for
any adjusted gross income of a married taxpayer filing separately.
 
     As  with  tax-deductible contributions,  taxes  on the  income  earned from
nondeductible IRA contributions will be deferred until properly distributed from
the IRA.
 
SIMPLIFIED EMPLOYEE PENSION PLAN ('SEP/IRA')
 
     A SEP/IRA is  available for investment  and may be  established on a  group
basis by an employer who wishes to sponsor a tax-sheltered retirement program by
making IRA contributions on behalf of all eligible employees.
 
SAVINGS INCENTIVE MATCH PLAN FOR EMPLOYEES
(SIMPLE) -- SIMPLE IRA AND SIMPLE 401(K)
 

     SIMPLE  plans  offer employers  with 100  or  fewer eligible  employees the
ability to establish a retirement  plan that permits employee contributions.  An
employer  may also elect to make additional contributions to these Plans. Please
telephone the  Money  Funds'  shareholder  servicing  representatives  at  (800)
225-8011 for more information.

 
EMPLOYER-SPONSORED RETIREMENT PLANS
 
     The  Adviser has a  prototype retirement plan  available which provides for
investment of plan assets in shares of any one of the Money Funds. The prototype
retirement plan may  be used  by sole proprietors  and partnerships  as well  as
corporations  to establish a tax qualified profit sharing plan or money purchase
pension plan (or both) of their own.
 
     Under  the  prototype  retirement  plan,   an  employer  may  make   annual
tax-deductible  contributions  for  allocation  to  the  accounts  of  the  plan
participants to the maximum extent permitted by the federal tax law for the type
of plan implemented. The Adviser has received favorable opinion letters from the
IRS that the prototype retirement plan is acceptable by qualified employers.
 
SELF-DIRECTED RETIREMENT PLANS
 
     Shares of the Money  Funds may be suitable  for self-directed IRA  accounts
and  prototype retirement plans  such as those developed  by Donaldson, Lufkin &
Jenrette Securities Corporation, the parent of the Adviser and the Money  Funds'
Distributor.
 
                              GENERAL INFORMATION
 
CAPITALIZATION
 

     The Opportunity Funds were organized as a Delaware business trust under the
laws of Delaware on May 31, 1995. The Opportunity Funds have an unlimited number
of  authorized  shares of  beneficial interest,  which may,  without shareholder
approval, be divided into an unlimited number of series, and an unlimited number
of classes. The Opportunity Funds are currently divided into the Money Funds and
the   Equity   Funds,   each   of   which   are   divided   into   two   series.

 
                                       14
 
<PAGE>
 
<PAGE>
Each  share  of  each  Money  Fund  is  normally  entitled  to  one  vote  (with
proportional voting  for fractional  shares). Generally,  shares of  both  Money
Funds  vote  as  a single  series  on matters  that  affect all  Money  Funds in
substantially  the  same  manner.  As  to  matters  affecting  each  Money  Fund
separately,  such as  approval of the  investment advisory  agreement, shares of
each Money Fund would  vote as separate  series. The Money  Funds will not  have
annual  meetings of shareholders so long as  at least two-thirds of the Trustees
then in office have been elected by the shareholders. Section 16(c) of the  1940
Act  provides certain  rights to shareholders  which the Money  Funds will honor
regarding the calling of meetings of shareholders and other communications  with
shareholders.  Trustees may also call meetings of shareholders from time to time
as the Trustees deem necessary or desirable.
 
     Shares of a Money Fund are  freely transferable, are entitled to  dividends
as  determined by the Trustees and, in liquidation of a Money Fund, are entitled
to receive the net  assets of that Money  Fund. Shareholders have no  preemptive
rights.
 
DISTRIBUTOR
 
     Donaldson,  Lufkin & Jenrette  Securities Corporation, an  affiliate of the
Adviser, serves as the Money Funds' Distributor.
 
CUSTODIAN, DIVIDEND DISBURSING AGENT AND TRANSFER AGENT
 
     Citibank, N.A. acts as Custodian for  the securities and cash of the  Money
Funds,  but  plays no  part in  deciding on  the purchase  or sale  of portfolio
securities. FPS Services, Inc. acts as dividend disbursing agent, registrar  and
transfer agent.
 
INFORMATION FOR SHAREHOLDERS
 
     Any  shareholder inquiry  regarding the  Money Funds  or the  status of the
shareholder's account can be made to the Money Funds by mail or by telephone  at
the  address or telephone  number listed in  front of this  Prospectus or to FPS
Services, Inc. at the address on the cover of this Prospectus.
 
     Following  any  purchase  or  redemption,  a  shareholder  will  receive  a
statement  confirming the transaction. Annual  audited and semi-annual unaudited
financial statements, which  include a  list of  investments held  by the  Money
Funds, will be sent to shareholders.
 
                                       15



<PAGE>
 
<PAGE>
                              WINTHROP MONEY FUNDS
                                 (800) 225-8011
 
                        DLJ Investment Management Corp.
                   277 Park Avenue, New York, New York 10172
 
                                  DISTRIBUTOR
 
              Donaldson, Lufkin & Jenrette Securities Corporation
                   277 Park Avenue, New York, New York 10172
 
                              INDEPENDENT AUDITORS
 
                               Ernst & Young LLP
                  787 Seventh Avenue, New York, New York 10019
 
                                   CUSTODIAN
 
                                 Citibank, N.A.
                   111 Wall Street, New York, New York 10043
 
                                 TRANSFER AGENT
 
                               FPS Services, Inc.
                                 P.O. Box 61503
                              (3200 Horizon Drive)
                         King of Prussia, PA 19406-0903
 
                                    COUNSEL
 
                    Skadden, Arps, Slate, Meagher & Flom LLP
                   919 Third Avenue, New York, New York 10022
 
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                            <C>
Summary of Money Fund Expenses                                       2
Introduction                                                         3
Investment Objectives, Policies and Risk Considerations              3
Management                                                           6
Expenses of the Money Funds                                          7
Purchases, Redemptions and Sharehodlder Services                     8
Net Asset Value                                                     13
Daily, Dividends, Distributions and Taxes                           13
Retirement Plans                                                    13
General Information                                                 14
</TABLE>
 

                       This Prospectus does not
                     constitute an offering in any
                     state in which such offering
                       may not lawfully be made.

WMF-1



                            WINTHROP
                            MONEY
                            FUNDS

 
                            ------------------------
                            WINTHROP MUNICIPAL
                            MONEY FUND

                            WINTHROP U.S.
                            GOVERNMENT MONEY
                            FUND
 
                            PROSPECTUS
                            JANUARY 24, 1997


    [LOGO]

  WINTHROP
 OPPORTUNITY
   FUNDS


<PAGE>
 
<PAGE>

WINTHROP OPPORTUNITY FUNDS
277 PARK AVENUE, NEW YORK, NEW YORK 10172
Toll Free (800) 225-8011

                       STATEMENT OF ADDITIONAL INFORMATION

                                                                January 24, 1997

This Statement of Additional Information relates to the Winthrop Municipal Money
Fund (the "Municipal Fund") and the Winthrop U.S. Government Money Fund (the
"Government Fund" and together with the Municipal Fund, the "Money Funds"), each
of which is a series of the Winthrop Opportunity Funds, and is not a prospectus
and should be read in conjunction with the Funds' current Prospectus dated
January 24, 1997, as supplemented from time to time, which is incorporated
herein by reference. A copy of the Prospectus may be obtained by contacting the
Money Funds at the address or telephone number listed above.

                            TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                   PAGE

<S>                                                              <C>
Investment Policies and Restrictions................................1
Management..........................................................9
Expenses of the Money Funds........................................13
Purchases, Redemptions, Exchanges and
        Systematic Withdrawal Plan.................................15
Net Asset Value....................................................17
Daily Dividends, Distributions and Taxes...........................18
Portfolio Transactions.............................................22
Investment Performance Information.................................23
General Information................................................26
Appendix A -- Securities Ratings..................................A-1
Appendix B -- Description of Municipal Securities.................B-1
</TABLE>


INVESTMENT POLICIES AND RESTRICTIONS

               The following investment policies and restrictions supplement
should be read in conjunction with the information set forth under the heading
"Investment Objectives, Policies and Risk Considerations" in the Money Funds'
Prospectus. Except as noted in the Prospectus and this Statement of Additional
Information, the Money Funds' investment policies are not fundamental and may be
changed by the Trustees of the Money Funds without shareholder approval;
however, shareholders will be notified prior to a significant change in such
policies. The Money Funds' investment restrictions which are fundamental and may
not be changed without shareholder approval are indicated under "Fundamental
Investment Restrictions" in this Statement of Additional Information.

               It is the policy of the Municipal Fund to seek maximum

<PAGE>
 
<PAGE>

current income, consistent with liquidity and safety of principal, that is
exempt from Federal income taxes by investing principally in a diversified
portfolio of municipal securities; it is the policy of the Government Fund to
seek maximum current income, consistent with liquidity and safety of principal,
by investing in a portfolio of U.S. Government securities. It is the policy of
both Money Funds to declare the net investment income associated with their
investments as a daily dividend to maintain the net asset value of the Funds at
$1.00. (See "Net Asset Value" and "Daily Dividends, Distributions and Taxes.")
In addition, one or both of the Money Funds may invest in the securities
described below. The Prospectus indicates which particular Money Fund is
permitted to invest in, or may be limited in investing in, the following
securities.

Securities

               U.S. Government Obligations. The Money Funds may purchase
marketable obligations of, or guaranteed by, the United States Government, its
agencies or instrumentalities. These include issues of the United States
Treasury, such as bills, certificates of indebtedness, notes and bonds, and
issues of agencies and instrumentalities established under the authority of an
act of Congress, including variable rate obligations such as floating rate
notes. The latter issues include, but are not limited to, obligations of the
Bank for Cooperatives, Federal Financing Bank, Federal Home Loan Bank, Federal
Intermediate Credit Banks, Federal Land Banks, Federal National Mortgage
Association and Tennessee Valley Authority. Some of these securities are
supported by the full faith and credit of the United States Treasury, others are
supported by the right of the issuer to borrow from the Treasury, and still
others are supported only by the credit of the agency or instrumentality.

               Repurchase Agreements. The Money Funds may enter into "repurchase
agreements" with member banks of the Federal Reserve System, "primary dealers"
(as designated by the Federal Reserve Bank of New York) in such securities or
with any domestic or foreign broker/dealer which is recognized as a reporting
government securities dealer. Repurchase agreements permit the Money Funds to
keep all of their assets at work while retaining "overnight" flexibility in
pursuit of investments of a longer-term nature. The Money Funds require
continual maintenance of collateral with an approved custodian in an amount
equal to, or in excess of, the market value of the securities which are the
subject of a repurchase agreement. In the event a vendor defaults on its
repurchase obligation, the Money Funds might suffer a loss to the extent that
the proceeds from the sale of the collateral were less than the repurchase
price. If the vendor becomes the subject of bankruptcy proceedings, the Money
Funds might be delayed in selling the collateral. Pursuant to Rule 2a-7 of the
Investment Company Act of 1940, as amended (the "Act") (as described later), a
repurchase agreement is deemed to be an acquisition of the underlying securities
provided that the obligation of the seller to repurchase the securities from the
Money Funds is collateralized fully (as defined in such Rule). Accordingly, the
vendor of a fully collateralized repurchase agreement is deemed to be the issuer
of the underlying securities.

               Reverse Repurchase Agreements. The Money Funds may also enter
into reverse repurchase agreements. Under a reverse repurchase agreement, the
Money Funds would sell securities and agree to repurchase them at a mutually
agreed upon date and price. At the time the Money Funds enter into a reverse
repurchase agreement, they would establish and maintain with an approved
custodian a segregated account containing

<PAGE>
 
<PAGE>


liquid securities having a value not less than the repurchase price. Reverse
repurchase agreements involve the risk that the market value of the securities
subject to such agreement could decline below the repurchase price to be paid by
the Money Funds for such securities. In the event the buyer of securities under
a reverse repurchase agreement filed for bankruptcy or became insolvent, such
buyer or receiver would receive an extension of time to determine whether to
enforce the Money Funds' obligations to repurchase the securities and the Money
Funds' use of the proceeds of the reverse repurchase could effectively be
restricted pending such decision. Reverse repurchase agreements create leverage,
a speculative factor, but are not considered senior securities by the Money
Funds or the Securities and Exchange Commission to the extent liquid debt
securities are segregated in an amount at least equal to the amount of the
liability.

               When-Issued and Delayed-Delivery Securities. The Money Funds may,
to the extent consistent with their other investment policies and restrictions,
enter into forward commitments for the purchase or sale of securities, including
on a "when-issued" or "delayed-delivery" basis in excess of customary settlement
periods for the type of security involved. In some cases, a forward commitment
may be conditioned upon the occurrence of a subsequent event, such as approval
and consummation of a merger, corporate reorganization or debt restructuring,
i.e., a when, as and if issued security.

               When such transactions are negotiated, the price is fixed at the
time of the commitment, with payment and delivery taking place in the future,
generally ten days to a month, or more, after the date of the commitment. While
the Money Funds will only enter into a forward commitment with the intention of
actually acquiring the security, the Money Funds may sell the security before
the settlement date if it is deemed advisable.

               Securities purchased under a forward commitment are subject to
market fluctuation, and no interest (or dividends) accrues to the Money Funds
prior to the settlement date. The Money Funds will segregate with their
custodian cash or liquid debt securities in an aggregate amount at least equal
to the amount of their respective outstanding forward commitments.

               Standby Commitments. The Municipal Fund may purchase municipal
securities together with the right to resell them to the seller at an
agreed-upon price or yield within specified periods prior to their maturity
dates. Such a right to resell is commonly known as a "standby commitment," and
the aggregate price which the Municipal Fund pays for securities with a standby
commitment may be higher than the price which otherwise would be paid. The
primary purpose of this practice is to permit the Municipal Fund to be as fully
invested as practicable in municipal securities while preserving the necessary
flexibility and liquidity to meet unanticipated redemptions. In this regard, the
Municipal Fund acquires standby commitments solely to facilitate liquidity and
does not exercise its rights thereunder for trading purposes. Since the value of
a standby commitment is dependent on the ability of the standby commitment
writer to meet its obligation to repurchase, the Municipal Fund's policy is to
enter into standby commitment transactions only with municipal securities
dealers which are determined to present minimal credit risks.

               The acquisition of a standby commitment does not affect

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the valuation or maturity of the underlying municipal securities which continue
to be valued in accordance with the amortized cost method. Standby commitments
acquired by the Municipal Fund are valued at zero in determining net asset
value. Where a Municipal Fund pays directly or indirectly for a standby
commitment, its cost is reflected as unrealized depreciation for the period
during which the commitment is held. Standby commitments do not affect the
average weighted maturity of the Municipal Fund's portfolio of securities.

               Municipal Securities. The term "municipal securities," as used in
the Prospectus and this Statement of Additional Information, means obligations
issued by or on behalf of states, territories, and possessions of the United
States or their political subdivisions, agencies and instrumentalities, the
interest from which is exempt (subject to the alternative minimum tax - as later
described) from Federal income taxes. The municipal securities in which the
Municipal Fund invests are limited to those obligations which at the time of
purchase are:

        1.     Backed by the full faith and credit of the United States;
               or

        2.     Municipal notes rated MIG-1 or MIG-2 and VMIG-1 or VMIG-2,
               by Moody's Investors Service, Inc. ("Moody's") or SP-1 or
               SP-2 by Standard and Poor's Corporation ("S&P"), or, if
               not rated, are of equivalent investment quality as
               determined by the Municipal Fund's adviser; or

        3.     Municipal bonds rated Aa or higher by Moody's, AA-or
               higher by S&P or, if not rated, are of equivalent
               investment quality as determined by the Municipal Funds'
               adviser; or

        4.     Other types of municipal securities, provided that such
               obligations are rated Prime-1 by Moody's, A-1 or higher by S&P
               or, if not rated, are of equivalent investment quality as
               determined by the Municipal Fund's adviser.

               See Appendix A for a description of municipal ratings and
               Appendix B for a description of municipal securities.

               Alternative Minimum Tax. The Municipal Fund may invest without
limitation in tax-exempt municipal securities subject to the alternative minimum
tax (the "AMT"). Under current Federal income tax law, (1) interest on
tax-exempt municipal securities issued after August 7, 1986 which are "specified
private activity bonds," and the proportionate share of any exempt-interest
dividend paid by a regulated investment company which receives interest from
such specified private activity bonds, will be treated as an item of tax
preference for purposes of the AMT imposed on individuals and corporations,
though for regular Federal income tax purposes such interest will remain fully
tax-exempt, and (2) interest on all tax-exempt obligations will be included in
"adjusted current earnings" for corporation for AMT purposes. Such private
activity bonds ("AMT-Subject Bonds") have provided, and may continue to provide,
somewhat higher yields than other comparable municipal securities.

               Investors should consider that, in most instances, no state,
municipality or other governmental unit with taxing power will be

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<PAGE>


obligated with respect to AMT-Subject Bonds. AMT-Subject Bonds are in most cases
revenue bonds and do not generally have the pledge of the credit or the taxing
power, if any, of the issuer of such bonds. AMT-Subject Bonds are generally
limited obligations of the issuer supported by payments from private business
entities and not by the full faith and credit of a state or any governmental
subdivision. Typically the obligation of the issuer of an AMT-Subject Bond is to
make payments to bond holders only out of, and to the extent of, payments made
by the private business entity for whose benefit the AMT-Subject Bonds were
issued. Payment of the principal and interest on such revenue bonds depends
solely on the ability of the user of the facilities financed by the bonds to
meet its financial obligations and the pledge, if any, of real and personal
property so financed as security for such payment. It is not possible to provide
specific detail on each of these obligations in which Municipal Fund assets may
be invested.

               While the Municipal Fund may invest without limitation in
securities subject to AMT, the AMT affects only a small percentage of all
taxpaying investors.

               Taxable Securities for the Municipal Fund. The Municipal Fund is,
and expects to be, largely invested in municipal securities, but may elect to
invest up to 20% of its total assets in taxable money market securities when
such action is deemed to be in the best interests of shareholders. Such taxable
money market securities also are limited to remaining maturities of 397 days or
less at the time of the Municipal Fund's investment, and the Municipal Fund's
municipal and taxable securities are maintained at a dollar-weighted average of
90 days or less.

               Variable Rate Obligations. The interest rate payable on certain
municipal securities in which the Municipal Fund may invest, called "variable
rate" obligations, is not fixed and may fluctuate based upon changes in market
rates. The interest rate payable on a variable rate municipal security is
adjusted either at pre-designated periodic intervals or whenever there is a
change in the market rate to which the security's interest rate is tied. Other
features may include the right of the Municipal Fund to demand prepayment of the
principal amount of the obligation prior to its stated maturity and the right of
the issuer to prepay the principal amount prior to maturity. The main benefit of
a variable rate municipal security is that the interest rate adjustment
minimizes changes in the market value of the obligation. As a result, the
purchase of variable rate municipal securities enhances the ability of the
Municipal Fund to maintain a stable net asset value per share and to sell an
obligation prior to maturity at a price approximating the full principal amount.
The payment of principal and interest by issuers of certain municipal securities
purchased by the Municipal Fund may be guaranteed by letters of credit or other
credit facilities offered by banking or other financial institutions. Such
guarantees will be considered in determining whether a municipal security meets
the Municipal Fund's investment quality requirements.

               Variable rate obligations purchased by the Municipal Fund may
include participation interests in variable rate industrial development bonds.
Purchase of a participation interest gives the Municipal Fund an undivided
interest in certain such bonds. The Municipal Fund can exercise the right, on
not more than 30 days' notice, to sell such an instrument back to the financial
institution from which it purchased the instrument and, if applicable, draw on
the letter of credit


<PAGE>
 
<PAGE>


for all or any part of the principal amount of the Municipal Fund's
participation interest in the instrument, plus accrued interest, but will do so
only (i) as required to provide liquidity to the Municipal Fund, (ii) to
maintain a high quality investment portfolio, or (iii) upon a default under the
terms of the demand instrument. Financial institutions retain portions of the
interest paid on such variable rate industrial development bonds as their fees
for servicing such instruments and the issuance of related letters of credit and
repurchase commitments. No single financial institution will issue its letters
of credit with respect to variable rate obligations or participation interests
therein covering more than 5% of the total assets of the Municipal Fund. The
Municipal Fund will not purchase participation interests in variable rate
industrial development bonds unless it receives an opinion of counsel or a
ruling of the Internal Revenue Service that interest earned by the Municipal
Fund from the bonds in which it holds participation interests is exempt from
Federal income taxes. The Municipal Fund's adviser will monitor the pricing,
quality and liquidity of variable rate demand obligations and participation
interests therein held by the Municipal Fund on the basis of published financial
information, rating agency reports and other research services to which the
adviser may subscribe.

               Municipal Leases and Participations Therein. These are
obligations in the form of a lease or installment purchase which is issued by
state and local governments to acquire equipment and facilities. Income from
such obligations is exempt from local and state taxes in the state of issuance.
"Participations" in such leases are undivided interests in a portion of the
total obligation. Municipal leases frequently have special risks not normally
associated with general obligation or revenue bonds. The constitutions and
statutes of all states contain requirements that the state or a municipality
must meet to incur debt. These often include voter referenda, interest rate
limits and public sale requirements. Leases and installment purchase or
conditional sale contracts (which normally provide for title to the leased asset
to pass eventually to the governmental issuer) have evolved as a means for
governmental issuers to acquire property and equipment without meeting the
constitutional and statutory requirements for the issuance of debt. The
debt-issuance limitations are deemed to be inapplicable because of the inclusion
in many leases or contracts of "non-appropriation" clauses that provide that the
governmental issuer has no obligation to make future payments under the lease or
contract unless money is appropriated for such purpose by the appropriate
legislative body on a yearly or other periodic basis.

               In addition to the "non-appropriation" risk, municipal leases
have additional risk aspects because they represent a relatively new type of
financing that has not yet developed in many cases the depth of marketability
and liquidity associated with conventional bonds; moreover, although the
obligations will be secured by the leased equipment, the disposition of the
equipment in the event of non-appropriation or foreclosure might, in some cases,
prove difficult. In addition, in certain instances the tax-exempt status of the
obligations will not be subject to the legal opinion of a nationally recognized
"bond counsel," as is customarily required in larger issues of municipal
obligations. However, in all cases the Municipal Fund will require that a
municipal lease purchased by the Municipal Fund be covered by a legal opinion
(typically from the issuer's counsel) to the effect that, as of the effective
date of such lease, the lease is the valid and binding obligation of the
governmental issuer.


<PAGE>
 
<PAGE>


               Municipal leases and participations will be purchased pursuant to
analysis and review procedures which the Municipal Fund's adviser believes will
minimize risks to shareholders. It is possible that more than 5% of the Fund's
net assets will be invested in municipal leases which have been determined by
the Municipal Fund's adviser to be liquid securities. When evaluating the
liquidity of a municipal lease, the investment adviser considers all relevant
factors including frequency of trading, availability of quotations, the number
of dealers and their willingness to make markets, the nature of trading activity
and the assurance that liquidity will be maintained. With respect to unrated
municipal leases, credit quality is also evaluated.

               General. Net income to shareholders is aided both by the Money
Funds' ability to make investments in large denominations and by its
efficiencies of scale. Also, the Money Funds may seek to improve its income by
selling certain portfolio securities prior to maturity in order to take
advantage of yield disparities that occur in money markets. The market value of
the Money Funds' investments tends to decrease during periods of rising interest
rates and to increase during intervals of falling rates.

Rule 2a-7 Under the Investment Company Act of 1940

               The Money Funds will comply with Rule 2a-7 under the Act, as
amended from time to time, including the diversity, quality and maturity
limitations imposed by the Rule.

               Currently, pursuant to Rule 2a-7, the Money Funds may invest only
in "eligible securities," as that term is defined in the Rule. Generally, an
eligible security is a security that (i) is denominated in U.S. Dollars and has
a remaining maturity of 397 days or less; (ii) is rated, or is issued by an
issuer with short-term debt outstanding that is rated, in one of the two highest
rating categories by two nationally recognized statistical rating organizations
("Rating Organizations") or, if only one has issued a rating, by that Rating
Organization; and (iii) has been determined by the Money Funds' adviser to
present minimal credit risks. A security that originally had a maturity of
greater than 397 days is an eligible security if its remaining maturity at the
time of purchase is 397 calendar days or less and the issuer has outstanding
short-term debt that would be an eligible security. Unrated securities may also
be eligible securities if the Money Funds' adviser determines that they are of
comparable quality to a rated eligible security pursuant to guidelines approved
by the Trustees. A description of the ratings of some Rating Organizations
appears in Appendix A attached hereto.

               Under Rule 2a-7, the Money Funds may not invest more than five
percent of its assets in the securities of any one issuer other than the United
States Government, its agencies and instrumentalities. In addition, the Money
Funds may not invest in a security that has received, or is deemed comparable in
quality to a security that has received, the second highest rating by the
requisite number of Rating Organizations (a "second tier security") if
immediately after the acquisition thereof the Money Funds would have invested
more than (A) the greater of one percent of its total assets or one million
dollars in securities issued by that issuer which are second tier securities, or
(B) five percent of its total assets in second tier securities.

               Securities with a settlement of more than seven days from


<PAGE>
 
<PAGE>



the date of purchase, as calculated pursuant to Rule 2a-7, are considered by the
Securities and Exchange Commission to be illiquid securities in an open-end
investment company. The Money Funds are restricted to invest no more than 10% of
their net assets in illiquid securities.

Other General Information About the Municipal Fund

               Yields on municipal securities are dependent on a variety of
factors, including the general condition of the money market and of the
municipal bond and municipal note market, the size of a particular offer, the
maturity of the obligation and the rating of the issue. Municipal securities
with longer maturities tend to produce higher yields and are generally subject
to greater price movements than obligations with shorter maturities. (An
increase in interest rates will generally reduce the market value of portfolio
investments, and a decline in interest rates will generally increase the value
of portfolio investments.) The achievement of the Municipal Fund's investment
objectives is dependent in part on the continuing ability of the issuers of
municipal securities in which the Municipal Fund invests to meet their
obligations for the payment of principal and interest when due. Municipal
securities historically have not been subject to registration with the
Securities and Exchange Commission, although there have been proposals which
would require registration in the future. The Municipal Fund may seek to improve
income by selling certain securities prior to maturity in order to take
advantage of yield disparities that occur in securities markets.

               Obligations of issuers of municipal securities are subject to the
provisions of bankruptcy, insolvency, and other laws affecting the rights and
remedies of creditors, such as the Bankruptcy Code. In addition, the obligations
of such issuers may become subject to laws enacted in the future by Congress,
state legislatures, or referenda extending the time for payment of principal
and/or interest, or imposing other constraints upon enforcement of such
obligations or upon the ability of municipalities to levy taxes. There is also
the possibility that, as a result of litigation or other conditions, the ability
of any issuer to pay, when due, the principal of, and interest on, its municipal
securities may be materially affected.

Fundamental Investment Restrictions

               The following fundamental investment restrictions are applicable
to each of the Money Funds and may not be changed with respect to a Money Fund
without the approval of a majority of the shareholders of that Money Fund, which
means the affirmative vote of the holders of (a) 67% or more of the shares of
that Money Fund represented at a meeting at which more than 50% of the
outstanding shares of the Money Fund are represented or (b) more than 50% of the
outstanding shares of that Money Fund, whichever is less. Except as set forth in
the Prospectus and this Statement of Additional Information, all other
investment policies or practices are considered by each Money Fund not to be
fundamental and accordingly may be changed without shareholder approval. If a
percentage restriction is adhered to at the time of investment, a later increase
or decrease in percentage resulting from a change in values or assets will not
constitute a violation of such restriction.

               Briefly, these fundamental restrictions provide that each Money
Fund may not:

<PAGE>
 
<PAGE>


                      (1) Invest 25% or more of the value of its total assets in
               any one industry, other than the United States Government, or any
               of its agencies or instrumentalities, provided that, for purposes
               of this policy, consumer finance companies, industrial finance
               companies and gas, electric, water and telephone utility
               companies are each considered to be separate industries;

                      (2) Issue senior securities, except as permitted
               under the Investment Company Act of 1940;

                      (3) Make loans of money or property to any person, except
               through loans of portfolio securities, the purchase of fixed
               income securities consistent with the Money Funds' investment
               objective and policies or the acquisition of securities subject
               to repurchase agreements;

                      (4) Underwrite the securities of other issuers, except to
               the extent that in connection with the disposition of portfolio
               securities the Money Funds may be deemed to be an underwriter;

                      (5) Purchase real estate or interests therein unless
               acquired as a result of ownership from investing in securities or
               other instruments (but this shall not prevent the Money Funds
               from investing in securities or other interests backed by real
               estate or securities of companies engaged in the real estate
               business);

                      (6) Purchase or sell commodities or commodities contracts
               except for purposes, and only to the extent, permitted by
               applicable law without the Money Funds becoming subject to
               registration with the Commodity and Futures Trading Commission as
               a commodity pool;

                      (7) Make any short sale of securities except in conformity
               with applicable laws, rules and regulations and unless, giving
               effect to such sale, the market value of all securities sold
               short does not exceed 25% of the value of the Money Fund's total
               assets and the Money Fund's aggregate short sales of a particular
               class of securities does not exceed 25% of then outstanding
               securities of that class; and

                      (8) Borrow money, except that the Money Funds may (i)
               borrow money for temporary or emergency purposes (not for
               leveraging or investment) and (ii) engage in reverse repurchase
               agreements for any purpose; provided that (i) and (ii) in
               combination do not exceed 33 1/3% of the Money Fund's total
               assets (including the amount borrowed) less liabilities (other
               than borrowings). Any borrowings that come to exceed this amount
               will be reduced within three days (not including Sundays and
               holidays) to the extent necessary to comply with the 33 1/3%
               limitation.

                                MANAGEMENT

               The Trustees and principal officers of the Money Funds,

<PAGE>
 
<PAGE>

their ages and their primary occupations during the past five years are set
forth below. Unless otherwise specified, the address of each such person is 277
Park Avenue, New York, New York 10172. Those Trustees whose names are preceded
by an asterisk are "interested persons" of the Funds as defined by Section
2(a)(19) of the Act.

               *G. Moffett Cochran, 46, Chairman of the Board of Trustees and
President of the Opportunity Funds is President and Chairman of the Adviser. He
has been associated with affiliates of the Adviser since 1992. Prior to his
association with the Money Funds and the Adviser, Mr. Cochran was a Senior Vice
President with Bessemer Trust Companies.

               Robert E. Fischer, 66, Trustee of the Opportunity Funds, has been
Member at the law firm Lowenthal, Landau, Fischer & Bring, P.C., since prior to
1991.

               Martin Jaffe, 50, Trustee, Vice President, Secretary and
Treasurer of the Opportunity Funds, is a Managing Director, the Chief Operating
Officer and Treasurer of the Adviser. He has been associated with affiliates of
the Adviser since prior to 1991.

               Wilmot H. Kidd, III, 55, Trustee of the Opportunity Funds, has
been President of Central Securities Corporation since prior to 1991.

               John W. Waller, III, 45, Trustee of the Opportunity Funds, has
been Chairman of Waller Capital Corporation, an investment banking firm, since
prior to 1991.

               James A. Engle, 38, Vice President of the Opportunity Funds, has
been associated with affiliates of the Adviser since prior to 1991.

               Richard L. Glessmann, 35, Vice President of the Opportunity
Funds, has been associated with affiliates of the Adviser since 1995.
Previously, he was a senior portfolio manager at Wells Fargo Bank since prior to
1991.

               Marybeth B. Leithead, 33, Vice President of the Opportunity
Funds, has been associated with affiliates of the Adviser since prior to 1991.

               Brian A. Kammerer, 39, Assistant Treasurer of the Opportunity
Funds, has been associated with affiliates of the Adviser since prior to 1991.

The following table sets forth certain information regarding compensation of the
Money Funds' Trustees and officers. No executive officer or person affiliated
with the Money Funds received compensation from the Funds for the calendar year
ended December 31, 1996 in excess of $60,000.

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<PAGE>



<TABLE>
<CAPTION>

                            Compensation Table

                                                                                           Total
                                               Pension or                                  Compensation
                                               Retirement                                  From Trust
                           Aggregate           Benefits Accrued      Estimated Annual      and Fund
                           Compensation        as Part of Trust      Benefits Upon         Complex Paid
Name and Position          From Trust(1)       Expenses              Retirement            to Trustees(2)
<S>                        <C>                 <C>                   <C>                   <C>
G. Moffett Cochran         $0                  None                  None                  $0     (9)
    Trustee

Robert E. Fischer          $10,000             None                  None                  $10,000 (4)
    Trustee
Martin Jaffe               $0                  None                  None                  $0     (4)
    Trustee
Wilmot H. Kidd, III        $10,000             None                  None                  $10,000 (4)
    Trustee
John W. Waller, III        $7,000              None                  None                  $7,000 (4)
    Trustee
</TABLE>

               The Trustees of the Opportunity Funds who are officers or
employees of the Money Funds' adviser or any of its affiliates receive no
remuneration from the Opportunity Funds. Each of the Trustees who are not
affiliated with the Adviser will be paid a $2,000 fee for each Opportunity Fund
board meeting attended. Messrs. Cochran and Jaffe are members of the Executive
Committee. Messrs. Fisher, Kidd and Waller are members of the Audit Committee
and are paid a $1,000 fee for each Audit Committee meeting attended.

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

1       The Opportunity Funds anticipate paying each independent Trustee
        approximately $10,000 in each calendar year.

2       Represents the total compensation paid to such persons during the
        calendar year ending December 31, 1996. The parenthetical number
        represents the number of portfolios (including the Money Funds), for
        which such person acts as a Trustee, that are considered part of the
        same fund complex as the Money Funds.

Adviser

               DLJ Investment Management Corp. (the "Adviser"), a Delaware
corporation with principal offices at 277 Park Avenue, New York, New York 10172,
has been retained under an Investment Advisory Agreement as the Money Funds'
investment adviser (see "Management" in the Prospectus). The Adviser was
established in 1996 to serve a select group of individual and institutional
investors.

               The Adviser is a wholly-owned subsidiary of Donaldson, Lufkin &
Jenrette Securities Corporation ("DLJ Securities" or the "Distributor"), the
distributor of the Funds' shares, which is a wholly-owned subsidiary of
Donaldson, Lufkin & Jenrette, Inc., which is in turn an independently operated,
indirect subsidiary of The Equitable Companies, Incorporated ("ECI"), a holding
company controlled by AXA, a French insurance holding company. The Adviser along
with its affiliates are an integral part of the DLJ Securities family, and as
one of the oldest money management firms in the country, they maintain a
tradition of personalized service and performance. The address of Donaldson,
Lufkin & Jenrette, Inc. is 277 Park Avenue, New York, New York 10172. The

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<PAGE>


address of ECI is 787 Seventh Avenue, New York, New York 10019.

               As of September 10, 1996, AXA owns 60.5% of the outstanding
shares of the common stock of ECI. AXA is the holding company for an
international group of insurance and related financial services companies. AXA's
insurance operations are comprised of activities in life insurance, property and
casualty insurance and reinsurance. The insurance operations are diverse
geographically with activities in France, the United States, the United Kingdom,
Canada and other countries, principally in Europe. AXA is also engaged in asset
management, investment banking and brokerage, real estate and other financial
services activities in the United States and Europe. Based on information
provided by AXA, on September 10, 1996, 35.6% of the issued ordinary shares
(representing 48.6% of the voting power) of AXA were directly or indirectly
owned by Finaxa, a French holding company ("Finaxa"). Such percentage of
interest includes the interest of Colisee Vendome, a wholly-owned subsidiary of
Finaxa, which owned 5.3% of the issued ordinary shares (representing 4.3% of the
voting power) of AXA and the interest of les Ateliers de construction du Nord de
la France-ANF ("ANF"), a 95.4% owned subsidiary of Finaxa, which owned 0.3% of
the issued ordinary shares (representing 0.4% of the voting power) of AXA. As of
September 10, 1996, 61.3% of the issued ordinary shares (representing 73.5% of
the voting power) of Finaxa were owned by five French mutual insurance companies
(the "Mutuelles AXA") (one of which, AXA Assurances I.A.R.D. Mutuelle, owned
34.8% of the issued ordinary shares (representing 40.6% of the voting power) and
23.7% of the issued ordinary shares (representing 15.0% of the voting power) of
Finaxa were owned by Banque Paribas, a French bank ("Paribas"). Including the
ordinary shares owned by Finaxa and its subsidiaries on September 10, 1996, the
Mutuelles AXA directly and indirectly owned 41.3% of the issued ordinary shares
of AXA (representing 56.3% of the voting power). Acting as a group, the
Mutuelles AXA will continue to control AXA and Finaxa.

               The Investment Advisory Agreement dated October 22, 1996, (the
"Investment Advisory Agreement") was approved by the Board of Trustees of the
Winthrop Opportunity Funds on October 22, 1996 and by the then shareholders on
January 24, 1997 and became effective on the same date. The Investment Advisory
Agreement continues in force for successive twelve month periods computed from
the first day of each fiscal year of each Money Fund provided that such
continuation is specifically approved at least annually by a majority vote of
the Trustees who neither are interested persons of the Funds nor have any direct
or indirect financial interest in the Investment Advisory Agreement, cast in
person at a meeting called for the purpose of voting on such approval. Under the
Investment Advisory Agreement, the Adviser is paid a management fee equal to .40
of 1% of the average daily net assets of the Money Funds which are reduced to
 .35% of the average daily net assets in excess of $1 billion. As of the date of
this Statement of Additional Information, the Money Funds have not commenced
operations and, accordingly, have not paid the Adviser a fee.

               Pursuant to the terms of the Investment Advisory Agreement, the
Adviser may retain, at its own expense, a subadviser to assist in the
performance of its services to the Money Funds.

                          EXPENSES OF THE FUNDS

General

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<PAGE>


               In addition to the payments to the Adviser under the Investment
Advisory Agreement, each Money Fund pays the other expenses incurred in its
organization and operations, including the costs of printing prospectuses and
other reports to existing shareholders; all expenses and fees related to
registration and filing with the Securities and Exchange Commission and with
state regulatory authorities; custody, transfer and dividend disbursing
expenses; legal and auditing costs; clerical, accounting and other office costs;
fees and expenses of Trustees who are not affiliated with the Adviser; costs of
maintenance of existence; and interest charges, taxes, brokerage fees and
commissions.

               As to the obtaining of clerical and accounting services not
required to be provided to the Money Funds by the Adviser under the Investment
Advisory Agreement, the Money Funds may employ their own personnel. For such
services, they also may utilize personnel employed by the Adviser or their
affiliates. In such event, the services shall be provided to the Money Funds at
cost and the payments therefor must be specifically approved in advance by the
Money Funds' Trustees, including a majority of its disinterested Trustees.

Distribution Agreement

               Pursuant to Rule 12b-1 adopted by the Securities and Exchange
Commission under the Act, the Money Funds have adopted a Distribution Agreement
(the "Distribution Agreement") and a Rule 12b-1 Plan for each Money Fund (the
"12b-1 Plans") to permit such Money Fund directly or indirectly to pay expenses
associated with the distribution of shares.

               Pursuant to the Distribution Agreement and the 12b-1 Plans, the
Treasurer of the Money Funds reports the amounts expended under the Distribution
Agreement and the purposes for which such expenditures were made to the Trustees
of the Money Funds on a quarterly basis. Also, the 12b-1 Plans provide that the
selection and nomination of disinterested Trustees (as defined in the Act) are
committed to the discretion of the disinterested Trustees then in office. The
Distribution Agreement and 12b-1 Plans may be continued annually if approved by
a majority vote of the Trustees, including a majority of the Trustees who
neither are interested persons of the Money Funds nor have any direct or
indirect financial interest in the Distribution Agreement, the 12b-1 Plans or in
any other agreements related to the 12b-1 Plans, cast in person at a meeting
called for the purpose of voting on such approval. The Distribution Agreement
was initially approved by each Money Fund's Trustees on October 22, 1996 and by
the then shareholders on January 24, 1997. All material amendments to the 12b-1
Plans must be approved by a vote of the Trustees, including a majority of the
Trustees who neither are interested persons of the Money Funds nor have any
direct or indirect financial interest in the 12b-1 Plans or any related
agreement, cast in person at a meeting called for the purpose of voting on such
approval. Each Money Fund's 12b-1 Plan may be terminated without penalty at any
time by a majority vote of the disinterested Trustees, by a majority vote of the
outstanding shares of a Money Fund or by the Adviser. Any agreement related to
the 12b-1 Plans may be terminated at any time, without payment of any penalty,
by a majority vote of the independent Trustees or by majority vote of the
outstanding shares of a Money Fund on not more than 60 days notice to any other
party to the agreement, and any agreement, but not the 12b-1 Plans, will
terminate automatically in the event of assignment.


<PAGE>
 
<PAGE>


               An initial concession or ongoing maintenance fee may be paid to
broker-dealers on sales of both Money Funds' shares. Pursuant to the Money
Funds' Rule 12b-1 Plans, if such fee is paid, the Distributor is then reimbursed
for such payments with amounts paid from the assets of such Money Fund. The
payments to the broker-dealer, although a Money Fund expense which is paid by
all shareholders, will only directly benefit investors who purchase their shares
through a broker-dealer rather than from the Money Funds. Broker-dealers who
sell shares of the Money Funds may provide services to their customers that are
not available to investors who purchase their shares directly from the Money
Funds. Investors who purchase their shares directly from a Money Fund will pay a
pro rata share of such Money Fund's expenses of encouraging broker-dealers to
provide such services but not receive any of the direct benefits of such
services. The payments to the broker-dealers will continue to be paid for as
long as the related assets remain in the Money Funds.

               Pursuant to the provisions of the 12b-1 Plans and the
Distribution Agreement, the maximum amount payable by the Money Funds under the
Rule 12b-1 Plan for distributing shares is .40 of 1% of the average daily net
assets during the fiscal year. Currently, each Money Fund pays a distribution
services fee each month to the Distributor, with respect to shares of each Money
Fund, at an annual rate of up to .25 of 1% of the aggregate average daily net
assets attributable to each Money Fund.

                   PURCHASES, REDEMPTIONS AND EXCHANGES

               The following information supplements that set forth in the Money
Funds' Prospectus under the heading "Purchases, Redemptions and Shareholder
Services".

Purchases

               Shares of the Money Funds are offered at the respective net asset
value per share next determined following receipt of a purchase order in proper
form by the Money Funds, the Money Funds' transfer agent, FPS Services, Inc.
(the "Transfer Agent"), or by the Distributor. The Money Funds calculate net
asset value per share as of the close of the regular session of the New York
Stock Exchange, which is generally 4:00 p.m. New York City time on each day that
trading is conducted on the New York Stock Exchange (the "NYSE") (see "Net Asset
Value").

               Orders for the purchase of shares of a Money Fund become
effective at the next transaction time (as stated in the Prospectus) after
Federal funds or bank wire monies become available to the Transfer Agent for a
shareholder's investment. Federal funds are a bank's deposits in a Federal
Reserve Bank. These funds can be transferred by Federal Reserve wire from the
account of one member bank to that of another member bank on the same day and
are considered to be immediately available funds. Investors should note that
their banks may impose a charge for this service. Money transmitted by a check
drawn on a member of the Federal Reserve System is converted to Federal funds in
one business day following receipt. Checks drawn on banks which are not members
of the Federal Reserve System may take longer. All payments (including checks
from individual investors) must be in United States dollars. All shares
purchased are confirmed to each shareholder and are


<PAGE>
 
<PAGE>


credited to such shareholder's account at net asset value. To avoid unnecessary
expense to the Money Funds, share certificates representing shares of the Money
Fund purchased are not issued for full or fractional shares.

Redemptions

               Shares of the Money Funds may be redeemed at a redemption price
equal to the net asset value per share, as next completed as of the closing of
the regular trading session of the NYSE following the receipt in proper form by
the Money Fund of the shares tendered for redemption.

               Payment of the redemption price may be made either in cash or in
portfolio securities (selected in the discretion of the Trustees and taken at
their value used in determining the redemption price), or partly in cash and
partly in portfolio securities. However, payments will be made wholly in cash
unless the Trustees believe that an appropriate situation exists which would
make such a practice detrimental to the best interest of the Money Funds or its
shareholders. If payment for shares redeemed is made wholly or partly in
portfolio securities, brokerage costs may be incurred by the investor in
converting the securities to cash.

               To redeem shares, the registered owner or owners should forward a
letter to the Money Funds containing a request for redemption of such shares at
the next determined net asset value per share. Alternatively, the shareholder
may elect the right to redeem shares by telephone as described in the
Prospectus. The signature or signatures in the redemption letter must be
guaranteed in the manner described below.

               If the total value of the shares being redeemed exceeds $50,000
or a redemption request directs proceeds to a party other than the registered
account owner(s), the signature or signatures on the letter or the endorsement
must be guaranteed by an "eligible guarantor institution" as defined in Rule
17Ad-15 under the Securities Exchange Act of 1934. Eligible guarantor
institutions include banks, brokers, dealers, credit unions, national securities
exchanges, registered securities associations, clearing agencies and savings
associations. A broker-dealer guaranteeing signatures must be a member of a
clearing corporation or maintain net capital of at least $100,000. Credit unions
must be authorized to issue signature guarantees. Signature guarantees will be
accepted from any eligible guarantor institution which participates in a
signature guarantee program. Additional documents may be required for redemption
of corporate, partnership or fiduciary accounts.

               The requirement for a guaranteed signature is for the protection
of the shareholder in that it is intended to prevent an unauthorized person from
redeeming his shares and obtaining the redemption proceeds.

Exchanges

               Exchange Privilege. Shares of each Money Fund can be exchanged
for shares of the other Money Fund. Shareholders whose initial investment was
directly into a Money Fund may exchange such shares into either class of the (i)
Winthrop Developing Markets Fund or the Winthrop International Equity Fund, both
series of the Winthrop Opportunity Funds (the "Equity Funds") or (ii) Winthrop
Growth Fund, Winthrop Fixed Income Fund, Winthrop Aggressive Growth Fund,
Winthrop Growth and Income Fund

<PAGE>
 
<PAGE>

and Winthrop Municipal Trust Fund (collectively, the "Focus Funds"). Shares of
each Money Fund established pursuant to Winthrop's exchange privilege will be
eligible for exchange into the Equity Funds or Focus Funds provided that the
exchange is directed into the same class of shares upon which the initial
investment was made. Shareholders may exchange shares by mail. Shareholders or
the shareholders' investment dealer of record may exchange shares by telephone.

               In the case of the Equity Funds or the Focus Funds, the exchange
privilege is available only in those jurisdictions where shares of such fund may
be legally sold and is subject to the restrictions stated under "Additional
Shareholder Services-Exchange Privilege" in the Prospectus. In addition, the
exchange privilege is available only when payment for the shares to be redeemed
has been made.

               Only those shareholders who have had shares in a Money Fund for
at least seven days may exchange all or part of those shares for shares of the
Equity Funds or the Focus Funds, and no partial exchange may be made if, as a
result, the shareholders' interest in a Money Fund would be reduced to less than
$250. The minimum initial exchange into the Equity Funds or Focus Funds is $250.

               All exchanges are subject to the minimum investment requirements
and any other applicable terms set forth in the Prospectus for the relevant fund
or class whose shares are being acquired. If for these or other reasons the
exchange cannot be effected, the shareholder will be so notified.

               The exchange privilege is intended to provide shareholders with a
convenient way to switch their investments when their objectives or perceived
market conditions suggest a change. The exchange privilege is not meant to
afford shareholders an investment vehicle to play short term swings in the stock
market by engaging in frequent transactions in and out of the Equity Funds and
the Focus Funds. Shareholders who engage in such frequent transactions may be
prohibited from or restricted in placing future exchange orders.

               Exchanges of shares are subject to the other requirements of the
fund into which exchanges are made. Annual fund operating expenses and
distribution fees for such fund may be higher and a sales charge differential
may apply. See "Additional Shareholder Services - Exchange Privilege" in the
Prospectus for a description of these expense differences.

                             NET ASSET VALUE

               Shares of the Money Funds will be priced at the net asset value
per share as computed each Money Fund Business Day in accordance with the
Agreement and Declaration of Trust and By-Laws. For this purpose, a Money Fund
Business Day is any day on which the NYSE is open for business, typically,
Monday through Friday exclusive of New Year's Day, Washington's Birthday,
Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day and
Good Friday.

               The net asset value of the shares of each Money Fund is
determined as of the close of the regular session on the NYSE, which is
generally at 4:00 p.m., New York City time, on each day that trading is
conducted on the NYSE. The net asset value per share is calculated by

<PAGE>
 
<PAGE>


taking the sum of the value of each Money Fund's investments and any cash or
other assets, subtracting liabilities, and dividing by the total number of
shares outstanding. All expenses, including the fees payable to the Adviser, are
accrued daily. For purposes of this computation, the securities in each Money
Fund's portfolio are valued at their amortized cost, which does not take into
account unrealized securities gains or losses as measured by market valuations.
The amortized cost method involves valuing an instrument at its cost and
thereafter applying a constant amortization to maturity of any discount or
premium, regardless of the impact of fluctuating interest rates on the market
value of the instrument. During periods of declining interest rates, the daily
yield on shares of the Money Fund may be higher than that of a fund with
identical investments utilizing a method of valuation based upon market prices
for its portfolio instruments; the converse would apply in a period of rising
interest rates.

               The valuation at amortized cost is in accordance with the
provisions of Rule 2a-7 under the Act. Pursuant to such rule, the Money Funds
maintain a dollar-weighted average portfolio maturity of 90 days or less and
invests only in securities of high quality (as defined by the Rule). The Money
Funds also purchase instruments which, at the time of investment, have remaining
maturities of no more than one year which maturities may extend to 397 days. The
Money Funds maintain procedures designed to stabilize, to the extent reasonably
possible, the price per share as computed for the purpose of sales and
redemptions at $1.00. Such procedures include review of the Money Funds'
portfolio holdings by the Adviser at such intervals as the Adviser deems
appropriate to determine whether and to what extent the net asset value of the
Money Funds calculated by using available market quotations or market
equivalents deviates from net asset value based on amortized cost. If such
deviation exceeds 1/2 of 1%, the Adviser will promptly consider what action, if
any, should be initiated. In the event the Adviser determines that such a
deviation may result in material dilution or other unfair results to new
investors or existing shareholders, they will consider corrective action which
might include (1) selling instruments prior to maturity to realize capital gains
or losses or to shorten average portfolio maturity, (2) withholding dividends of
net income on shares, or (3) establishing a net asset value per share using
available market quotations or equivalents. There can be no assurance, however,
that the Money Funds' net asset value per share will remain constant at $1.00.

                 DAILY DIVIDENDS, DISTRIBUTIONS AND TAXES

               Daily Dividend. The net investment income of the Money Funds is
declared daily as a dividend to holders of record, after giving effect to
redemptions received during the day, following the determination of net asset
value as of the close of business of regular sessions of the NYSE. Net
investment income consists of all accrued interest income on the Money Funds'
portfolio assets less the Money Funds' actual and accrued expenses applicable to
that dividend period. Realized gains and losses are reflected in net asset value
and are not included in net investment income.

               Because the net investment income of each Money Fund is declared
as a dividend each time the net investment income of the Fund is determined and
is expressed by an increase in the number of shares held at a $1.00 price, the
net asset value per share of each Money Fund (i.e., the value of the net assets
of the Fund divided by the number of shares

<PAGE>
 
<PAGE>


of the Money Fund outstanding) is expected to remain at $1.00 per share
immediately after each such determination and dividend declaration, unless (i)
there are unusual or extended fluctuations in short-term interest rates or other
factors, such as unfavorable changes in the creditworthiness of issuers
affecting the value of securities in the Money Fund's portfolio, or (ii) net
income is a negative amount. Normally, each Money Fund will have a positive net
investment income at the time of each determination thereof. Net investment
income may be negative if an unexpected liability must be accrued or a loss
realized. If the net investment income of a Money Fund determined at any time is
a negative amount, the net asset value per share will be reduced below $1.00
unless one or more of the following steps are taken: the Adviser has the
authority (i) to reduce the number of shares in each shareholder's account, (ii)
to offset each shareholder's pro rata portion of negative net investment income
from the shareholder's accrued dividend account or from future dividends, or
(iii) to combine these methods in order to seek to maintain the net asset value
per share at $1.00. Each Money Fund may endeavor to restore the net asset value
per share to $1.00 by not declaring dividends from net investment income on
subsequent days until restoration, with the result that the net asset value per
share will increase to the extent of positive net investment income which is not
declared as a dividend.

               Should the Money Funds incur or anticipate any unusual or
unexpected significant expense or loss which would affect disproportionately the
Money Funds' income for a particular period, the Adviser would at that time
consider whether to adhere to the dividend policy described above or to revise
it in light of the then prevailing circumstances in order to ameliorate to the
extent possible the disproportionate effect of such expense, loss or
depreciation on then existing shareholders. Such expenses or losses may
nevertheless result in a shareholder's receiving no dividends for the period
during which the shares are held and in receiving upon redemption a price per
share lower than that which was paid.

               The Money Funds do not anticipate realizing any long-term capital
gains. Distributions of realized capital gains, if any, would normally be paid
in November or December. The Money Funds expect to follow the practice of
distributing any net realized capital gains to shareholders at least annually.
However, if any realized capital gains are retained by the Money Funds for
reinvestment and federal income taxes are paid thereon by the Money Funds, the
Money Funds will elect to treat such capital gains as having been distributed to
shareholders; as a result, shareholders would be able to claim their share of
the taxes paid by the Money Funds on such gains as a credit against their
individual federal income tax liability.

               There is no fixed dividend rate and there can be no assurance
that a Money Fund will pay any dividends or realize any gains. The amount of any
dividend or distribution paid by each Money Fund depends upon the realization by
the Money Fund of income and capital gains from that Money Fund's investments.
All dividends and distributions will be made to shareholders of a Money Fund
solely from assets of that Money Fund.

               Taxation of Distributions. For shareholders' Federal income tax
purposes, all distributions by the Money Funds out of interest income and net
realized short-term capital gains are treated as ordinary income and
distributions of long-term capital gains, if any, are treated

<PAGE>
 
<PAGE>

as long-term capital gains irrespective of the length of time the shareholder
held shares in the Money Funds. Since the Money Funds derive nearly all of their
gross income in the form of interest income, and not dividends from domestic
corporations, it is expected that for corporate shareholders, none of the Money
Funds' distributions will be eligible for the dividends-received deduction under
current law.

               For shareholders' Federal income tax purposes, distributions to
shareholders out of tax-exempt interest income earned by the Municipal Fund
generally are not subject to Federal income tax. However, distributions derived
from interest which is exempt from regular federal income tax may subject
corporate shareholders to or increase their liability under the AMT. A portion
of such distributions may constitute a tax preference item for individual
shareholders and may subject them to or increase their liability under the AMT.

               Shareholders of the Money Funds may be subject to state and local
taxes on distributions received from the Money Funds and on redemptions of the
Money Funds' shares. Under the laws of certain states, distributions of
investment company taxable income are taxable to shareholders as dividends, even
though a portion of such distributions may be derived from interest on U.S.
Government obligations which, if received directly by such shareholders, would
be exempt from state income tax.

               Shareholders will be advised annually as to the federal (and
state, for the Municipal Fund) tax status of dividends and capital gains
distributions, if any, made by each Money Fund for the preceding year.

               Tax Qualification of the Money Funds. Each Money Fund intends to
qualify as a regulated investment company under Subchapter M of the Internal
Revenue Code of 1986 (the "Code"), as amended, so that it will not be liable for
federal income taxes to the extent that its net taxable income and net capital
gains are distributed. Accordingly, each Money Fund must, among other things,
(a) derive at least 90% of its gross income from dividends, interest, payments
with respect to securities loans, gains from the sale or other disposition of
stock or securities or other foreign currencies, or other income (including but
not limited to gains from futures and forward contracts) derived with respect to
its business of investing in stock, securities or currencies; (b) derive less
than 30% of its gross income from the sale or other disposition of stock,
securities, futures or forward contracts held less than three months; and (c)
diversify its holdings so that, at the end of each fiscal quarter, (i) at least
50% of the market value of the Money Fund's assets is represented by cash, U.S.
Government securities and other securities, with such other securities limited,
in respect of any one issuer, to an amount not greater than 5% of the Fund's
assets and 10% of the outstanding voting securities of such issuer, and (ii) not
more than 25% of the value of its assets is invested in the securities of any
one issuer (other than U.S. Government securities). In addition, each Money Fund
will be subject to a nondeductible 4% excise tax on the excess, if any, of
certain required distribution amounts over the amounts actually distributed by
that Money Fund. To the extent possible, each Money Fund intends to make such
distributions as may be necessary to avoid this excise tax.

               Subchapter M of the Code also permits the character of tax-exempt
interest distributed by a regulated investment company to

<PAGE>
 
<PAGE>

flow-through as tax-exempt interest to its shareholders, provided that at least
50% of the value of its assets at the end of each quarter of the taxable year is
invested in state, municipal and other obligations the interest on which is
exempt under Section 103(a) of the Code. The Municipal Fund intends to satisfy
this 50% requirement in order to permit distributions of tax-exempt interest to
be treated as such for federal income tax purposes in the hands of their
shareholders. Distributions to shareholders of tax-exempt interest earned by the
Municipal Fund for the taxable year are therefore not subject to regular federal
income tax, although they may be subject to the individual and corporate
alternative minimum taxes described above. Discount from certain stripped
tax-exempt obligations or their coupons, however, may be taxable.

               The Revenue Reconciliation Act of 1993 requires that any market
discount recognized on a tax-exempt bond is taxable as ordinary income. This
rule applies only for disposals of bonds purchased after April 30, 1993. A
market discount bond is a bond acquired in the secondary market at a price below
its redemption value. Under prior law, the treatment of market discount as
ordinary income did not apply to tax-exempt obligations. Instead, realized
market discount on tax-exempt obligations was treated as capital gain. Under the
new law, gain on the disposition of a tax-exempt obligation or any other market
discount bond that is acquired for a price less than its principal amount will
be treated as ordinary income (instead of capital gain) to the extent of accrued
market discount. This rule is effective only for bonds purchased after April 30,
1993.

               Since the Money Funds are not treated as a single entity for
federal income tax purposes, the performance of one Money Fund will have no
effect on the income tax liability of shareholders of another Money Fund.

               Dividend or capital gains distributions with respect to shares of
any Money Fund held by a tax-deferred or qualified retirement plan, such as an
IRA, Keogh Plan or corporate pension or profit sharing plan, will not be taxable
to the plan. Distributions 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.

               Taxation of Investor's Indebtedness. It is unlikely that interest
on indebtedness incurred by shareholders to purchase or carry shares of the
Money Funds will be deductible for Federal income tax purposes. Under rules of
the Internal Revenue Service for determining when borrowed funds are used for
purchasing or carrying particular assets, shares may be considered to have been
purchased or carried with borrowed funds even though those funds are not
directly linked to the shares. Further, persons who are "substantial users" (or
related persons) of facilities financed by private activity bonds (within the
meaning of Section 147(a) of the Code) should consult their tax advisers before
purchasing shares of the Municipal Fund. The Municipal Fund has not undertaken
any investigation as to the users of the facilities financed by bonds in its
portfolio.

               Tax Withholding. Each Money Fund is required to withhold and
remit to the U.S. Treasury 31% of the dividends or the proceeds of any
redemptions or exchanges of shares with respect to any shareholder who fails to
furnish the Money Funds with a correct taxpayer identification number, who
under-reports dividend or interest income or who fails to certify to the Money
Funds that he or she is not subject to

<PAGE>
 
<PAGE>

such withholding. An individual's tax identification number is his or her social
security number.

               Tax Legislation. Tax legislation in recent years has included
several provisions that may affect the supply of, and the demand for, tax-exempt
bonds, as well as the tax-exempt nature of interest paid thereon. It is not
possible to predict with certainty the effect of these recent tax law changes
upon the tax-exempt bond market, including the availability of obligations
appropriate for investment, nor is it possible to predict any additional
restrictions that may be enacted in the future. The Municipal Fund will monitor
developments in this area and consider whether changes in its objectives or
policies are desirable.

               General. The foregoing discussion of U.S. federal income
tax law relates solely to the application of that law to U.S. persons,
i.e., U.S. citizens and residents and U.S. corporations, partnerships,
trusts and estates. Each shareholder who is not a U.S. person should
consider the U.S. and foreign tax consequences of ownership of shares of
the Money Funds, including the possibility that such a shareholder may be
subject to a U.S. withholding tax at a rate of 30% (or at a lower rate
under an applicable income tax treaty) on amounts constituting ordinary
income received by the shareholder, where such amounts are treated as
income from U.S. sources under the Code.

               Shareholders should consult their tax advisers about the
application of the provisions of tax law described in this combined Statement of
Additional Information in light of their particular tax situations.

               The foregoing discussion is a general summary of certain current
federal income tax laws regarding the Money Funds. The discussion does not
purport to deal with all of the federal income tax consequences applicable to
the Money Funds, or to all categories of investors, some of whom may be subject
to special rules. Each prospective shareholder should consult with his or her
own professional tax adviser regarding federal, state and local tax consequences
of ownership of shares of the Money Funds.

                          PORTFOLIO TRANSACTIONS

               Subject to the general supervision of the Board of Trustees of
the Money Funds, the Adviser is responsible for the investment decisions and the
placing of the orders for portfolio transactions for the Money Funds. Portfolio
transactions for the Money Funds are normally effected by brokers.

               The Money Funds have no obligation to enter into transactions in
portfolio securities with any broker, dealer, issuer, underwriter or other
entity. In general, the securities the Money Funds will purchase are in
over-the-counter markets in which purchases and sales are affected directly with
a dealer acting as principal. The dealers impose a mark-up on their cost which
is usually not disclosed to the Money Funds. Therefore, the Money Funds will
generally make purchases based exclusively on best price, although execution may
be a factor in certain circumstances. In placing orders, it is the policy of the
Money Funds to obtain the best price and execution for its transactions.

                    INVESTMENT PERFORMANCE INFORMATION

<PAGE>
 
<PAGE>

               The Money Funds may furnish data about its investment performance
in advertisements, sales literature and reports to shareholders. From time to
time evaluations of performance are made by independent sources that may be used
in advertisements concerning each Money Fund. These sources include Lipper
Analytical Services, Weisenberger Investment Company Service, Barron's, Business
Week, Kiplinger's Personal Finance, Financial World, Forbes, Fortune, Money,
Personal Investor, Sylvia Porter's Personal Finance, Bank Rate Monitor,
Morningstar and The Wall Street Journal.

               These performance figures may be calculated in the following
manner:

Yield

               Yield is the net annualized yield based on a specified 7 calendar
days calculated at simple interest rates. Yield is calculated by determining the
net change; exclusive of capital changes, in the value of a hypothetical
pre-existing account having a balance of one share at the beginning of the
period, and dividing the difference by the value of the account at the beginning
of the base period to obtain the base period return. The yield is annualized by
multiplying the base period return by 365/7. The yield figure is stated to the
nearest hundredth of one percent. No yield is currently available because the
Money Funds have not commenced operations.

Effective Yield

               Effective yield is the net annualized yield for a specified 7
calendar days assuming a reinvestment of the income or compounding. Effective
yield is calculated by the same method as yield except the effective yield
figure is compounded by adding 1, raising the sum to a power equal to 365
divided by 7, and subtracting 1 from the result, according to the following
formula:

               Effective yield = [(Base Period Return + 1) - (365/7)] - 1.

               No effective yield is currently available because the Money Funds
have not commenced operations.

Tax-Equivalent Yield

               Tax-Equivalent Yield is the net annualized taxable yield needed
to produce a specified tax-exempt yield at a given tax rate based on a specified
7-day period assuming a reinvestment of all dividends paid during such period.
Tax-equivalent yield is calculated by dividing that portion of each Money Fund's
yield (as computed in the yield description above) which is tax-exempt by one
minus a stated income tax rate and adding the product to that portion, if any,
of the yield of the Money Fund that is not tax-exempt.

               The following chart will illustrate the effects of tax-exempt
income versus taxable income.

                   Tax-Exempt Income vs. Taxable Income

               Federal income tax rates in effect for the 1996 calendar

<PAGE>
 
<PAGE>

year.

<TABLE>
<CAPTION>

                                               Federal
                                               Tax Rates         To Equal Hypothetical Tax-Free Yields
              1996 Taxable                    Individual        of 5%, 7% and 9%, a Taxable Investment
            Income Brackets                     Return                    Would Have To Earn(3)
            ---------------                     ------
                                                                     5%             7%           9%
                                                                     --             --           --
<S>                                                 <C>             <C>            <C>         <C>
$0 - $24,000                                         15.0%           5.88           8.24       10.59
$24,001 - $58,150                                    28.0%           6.94           9.72       12.50
$58,151 - $121,300                                   31.0%           7.25          10.14       13.04
$121,301 - $263,750                                  36.0%           7.81          10.95       14.06
Over $263,750                                        39.6%           8.28          11.59       14.90

<CAPTION>
                                                    Joint
                                                    Return
                                                    -------
<S>                                                 <C>             <C>            <C>         <C>
$0 - $40,000                                         15.0%           5.88           8.24       10.59
$40,001 - $96,900                                    28.0%           6.94           9.72       12.50
$96,901 - $147,700                                   31.0%           7.25          10.14       13.04
$147,701 - $263,750                                  36.0%           7.81          10.95       14.06
Over $263,750                                        39.6%           8.28          11.59       14.90

</TABLE>

               Based on 1996 federal tax rates, a married couple filing a joint
return with two exemptions and taxable income of $50,000 would have to earn a
tax-equivalent yield of 6.94% in order to match a tax-free yield of 5%.

               There is no guarantee that a fund will achieve a specific yield.
While most of the income distributed to the shareholders of each Money Fund will
be exempt from federal income taxes, distributions may be subject to state and
local taxes.

               Quotations of total return will reflect only the performance of
an investment in any Money Fund during the particular time period shown. Each
Money Fund's total return and current yield may vary from time to time depending
on market conditions, the compositions of its portfolio and operating expenses.
These factors and possible differences in the methods used in calculating yield
should be considered when comparing each Money Fund's current yield to yields
published for other investment companies and other investment vehicles. Total
return and yield should also be considered relative to change in the value of
each Money Fund's shares and the risks associated with each Money Fund's
investment objectives, policies and risk considerations.

               In connection with communicating its yield, effective yield or
tax-equivalent yield to current or prospective shareholders, each Money Fund may
also compare these figures to the performance of other mutual funds tracked by
mutual fund rating services or to other unmanaged indexes which may assume
reinvestment of dividends but generally do not reflect deductions for
administrative and management

<PAGE>
 
<PAGE>

costs.

               Any quotations of a fund's performance are based on historical
earnings and are not intended to indicate future performance. An investor's
shares when redeemed may be worth more or less than their original cost.

                           GENERAL INFORMATION

Organization and Capitalization

               Winthrop Opportunity Funds was formed on May 31, 1995 as a
"business trust" under the laws of the state of Delaware.

               The Agreement and Declaration of Trust provides that no Trustee,
officer, employee or agent of the Opportunity Funds is liable to the Funds or to
a shareholder, nor is any Trustee, officer, employee or agent liable to any
third person in connection with the affairs of the Funds, except as such
liability may arise from his or its own bad faith, willful misfeasance, gross
negligence or reckless disregard of his or her duties. It also provides that all
third parties shall look solely to the property of the appropriate Opportunity
Fund for satisfaction of claims arising in connection with the affairs of an
Opportunity Fund. With the exceptions stated, the Agreement and Declaration of
Trust permits the Trustees to provide for the indemnification of Trustees,
officers, employees or agents of the Opportunity Funds against all liability in
connection with the affairs of the Opportunity Funds.

               All shares of the Opportunity Funds when duly issued will be
fully paid and non-assessable. The Trustees are authorized to re-classify and
issue any unissued shares to any number of additional series without shareholder
approval. Accordingly, the Trustees in the future, for reasons such as the
desire to establish one or more additional Opportunity Funds with different
investment objectives, policies, risk considerations or restrictions, may create
additional series or classes of shares. Any issuance of shares of such
additional series would be governed by the Act and the laws of the State of
Delaware.

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3      These illustrations assume the Federal alternative minimum tax is not
       applicable, that an individual is not a "head of household" and claims
       one exemption and that taxpayers filing a joint return claim two
       exemptions. Note also that these federal income tax brackets and rates do
       not take into account the effects of (i) a reduction in the deductibility
       of itemized deductions for taxpayers whose federal adjusted gross income
       exceeds $117,950 ($58,975 in the case of a married individual filing a
       separate return), or of (ii) the gradual phaseout of the personal
       exemption amount for taxpayers whose federal adjusted gross income
       exceeds $88,495 (for single individuals). The effective federal tax rates
       and equivalent yields for such taxpayers would be higher than those shown
       above.

Counsel and Independent Auditors

               Skadden, Arps, Slate, Meagher & Flom LLP, 919 Third

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Avenue, New York, New York 10022, serves as legal counsel for the Money Funds.

               Ernst & Young LLP, 787 Seventh Avenue, New York, New York 10019,
have been appointed as independent auditors for the Money Funds.

Additional Information

               This Statement of Additional Information does not contain all the
information set forth in the Registration Statement filed by the Funds with the
Securities and Exchange Commission under the Securities Act of 1933. Copies of
the Registration Statement may be obtained at a reasonable charge from the
Commission or may be examined, without charge, at the offices of the Commission
in Washington, D.C.

                                APPENDIX A

                            SECURITIES RATINGS

               The following is a description of the ratings given by S&P and
Moody's to U.S. municipal and government securities in which the Money Funds are
permitted to invest in accordance with Rule 2a-7 of the Act.

Rating of Municipal Obligations

               S&P:

               The two highest ratings of S&P for municipal bonds are AAA
(Prime) and AA (High-grade). Bonds rated AAA have the highest rating assigned by
S&P to a municipal obligation. Capacity to pay interest and repay principal is
extremely strong. Bonds rated AA have a very strong capacity to pay interest and
repay principal and differ from the highest rated issues only in a small degree.
The rating may be modified by the addition of a plus (+) or a minus (-) to show
relative standing within the category.

               S&P top ratings for municipal notes are SP-1 and SP-2. The
designation SP-1 indicates a very strong capacity to pay principal and interest.
A "+" is added for those issues determined to possess overwhelming safety
characteristics. An "SP-2" designation indicates a satisfactory capacity to pay
principal and interest.

               Moody's:

               The two highest ratings of Moody's for municipal bonds are Aaa
and Aa. Bonds rated Aaa are judged by Moody's to be of the best quality. Bonds
rated Aa are judged to be of high quality by all standards. Together with the
Aaa group, they comprise what are generally known as high-grade bonds. Moody's
states that Aa bonds are rated lower than the best bonds because margins of
protection or other elements make long-term risks appear somewhat larger than
for Aaa municipal bonds. Moody's rates a bond in the Aa category as Aa1 if
Moody's believes the bond possesses strong attributes within the category.

               Moody's ratings for municipal notes and other short-term loans
are designated Moody's Investment Grade (MIG) and Variable Rate

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Demand Obligation Moody's Investment Grade (VMIG). This distinction is in
recognition of the differences between short-term and long-term credit risk.
Loans bearing the designation MIG1/VMIG1 are of the best quality, enjoying
strong protection by establishing cash flows of funds for their servicing or by
established and broad-based access to the market for refinancing, or both. Loans
bearing the designation MIG2/VMIG2 are of high quality with margins of
protection ample although not as large as in the preceding group.

Commercial Paper Ratings

               S&P:

               Commercial paper rated A-1 or better by S&P has the following
characteristics: liquidity ratios are adequate to meet cash requirements;
long-term senior debt is rated "A" or better, although in some cases "BBB"
credits may be allowed; the issuer has access to at least two additional
channels of borrowing; and basic earnings and cash flow have an upward trend
with allowance made for unusual circumstances. Typically, the issuer's industry
is well established and the issuer has a strong position within the industry.
The reliability and quality of management are unquestioned.

               Moody's:

               The rating Prime-1 is the highest commercial paper rating
assigned by Moody's. Among the factors considered by Moody's in assigning
ratings are the following: (1) evaluation of the management of the issuer; (2)
economic evaluation of the issuer's industry or industries and an appraisal of
speculative-type risks which may be inherent in certain areas; (3) evaluation of
the issuer's products in relation to competition and customer acceptance; (4)
liquidity; (5) amount and quality of long-term debt; (6) trend earnings over a
period of ten years; (7) financial strength of a parent company and the
relationship which exists with the issuer; and (8) recognition by the management
of obligations which may be present or may arise as a result of public interest
questions and preparations to meet such obligations.

                                APPENDIX B

                   DESCRIPTIONS OF MUNICIPAL SECURITIES

               Municipal Notes generally are used to provide for short-term
capital needs and usually have maturities of one year or less.

They include the following:

               1.     Project Notes, which carry a U.S. Government
                      guarantee, are issued by public bodies (called
                      "local issuing agencies") created under the laws of
                      a state, territory, or U.S. possession. They have
                      maturities that range up to one year from the date
                      of issuance. Project Notes are backed by an
                      agreement between the local issuing agency and the
                      Federal Department of Housing and Urban
                      Development. These Notes provide financing for a
                      wide range of financial assistance programs for
                      housing, redevelopment, and related needs (such as

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                      low-income housing programs and renewal programs).

               2.     Tax Anticipation Notes are issued to finance working
                      capital needs of municipalities. Generally, they are
                      issued in anticipation of various seasonal tax revenues,
                      such as income, sales, use and business taxes, and are
                      payable from those specific future taxes.

               3.     Revenue Anticipation Notes are issued in expectation of
                      receipt of other types of revenues, such as Federal
                      revenues available under the Federal Revenue Sharing
                      Programs.

               4.     Bond Anticipation Notes are issued to provide interim
                      financing until long-term financing can be arranged. In
                      most cases, the long-term bonds then provide the money for
                      the repayment of the Notes.

               5.     Construction Loan Notes are sold to provide construction
                      financing. After successful completion and acceptance,
                      many projects receive permanent financing through the
                      Federal Housing Administration under the Federal National
                      Mortgage Association or the Government National Mortgage
                      Association.

               6.     Tax-Exempt Commercial Paper is a short-term obligation
                      with a stated maturity of 365 days or less. It is issued
                      by agencies of state and local governments to finance
                      seasonal working capital needs or as short-term financing
                      in anticipation of longer term financing.

               Municipal Bonds, which meet longer term capital needs and
generally have maturities of more than one year when issued, have three
principal classifications:

               1.     General Obligation Bonds are issued by such
                      entities as states, counties, cities, towns, and
                      regional districts. The proceeds of these
                      obligations are used to fund a wide range of public
                      projects, including construction or improvement of
                      schools, highways, and roads, and water and sewer
                      systems. The basic security behind General
                      Obligation bonds is the issuer's pledge of its full
                      faith and credit and taxing power for the payment
                      of principal and interest. The taxes that can be
                      levied for the payment of debt service may be
                      limited or unlimited as to the rate or amount of
                      special assessments.

               2.     Revenue Bonds generally are accrued by the net
                      revenues derived from a particular facility, group
                      of facilities, or, in some cases, the proceeds of a
                      special excise or other specific revenue source.
                      Revenue Bonds are issued to finance a wide variety
                      of capital projects including electric, gas, water
                      and sewer systems; highways, bridges, and tunnels;


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                      port and airport facilities; colleges and
                      universities; and hospitals. Many of these Bonds
                      provide additional security in the form of a debt
                      service reserve fund to be used to make principal
                      and interest payments. Housing authorities have a
                      wide range of security, including partially or
                      fully insured mortgages, and/or the net revenues
                      from housing or other public projects. Some
                      authorities provide further security in the form of
                      a state's ability (without obligation) to make up
                      deficiencies in the debt service reserve fund.

               3.     Industrial Development Bonds are considered
                      municipal bonds if the interest paid thereon is
                      exempt from Federal income tax and are issued by or
                      on behalf of public authorities to raise money to
                      finance various privately operated facilities for
                      business and manufacturing, housing, sports, and
                      pollution control. These Bonds are also used to
                      finance public facilities such as airports, mass
                      transit system, ports, and parking. The payment of
                      the principal and interest on such Bonds is
                      dependent solely on the ability or the facility's
                      user to meet its financial obligations and the
                      pledge, if any, of real and personal property as
                      security for such payment.

                    Statement of Differences

    The dagger symbol shall be expressed as................................. `D'

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