LIQUID INSTITUTIONAL RESERVES
497, 1995-09-19
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<PAGE>
Prospectus                                                     September 1, 1995
 
--------------------------------------------------------------------------------
                         Liquid Institutional Reserves
                               Money Market Fund
                           Government Securities Fund
                            Treasury Securities Fund
    1285 AVENUE OF THE AMERICAS   NEW YORK, NEW YORK 10019   (800) 647-1568
 
Liquid  Institutional Reserves (the  'Trust') is a  no-load, open-end investment
company offering shares in three separate, diversified, money market funds  (the
'Funds').  Each Fund seeks high current income to the extent consistent with the
preservation of capital and the maintenance of liquidity through investments  in
high quality, short term, U.S. dollar denominated money market instruments.
 
      The  Money Market Fund invests in a broad array of obligations of U.S. and
      foreign issuers and repurchase agreements.
 
      The Government Securities  Fund invests  in certain  securities issued  or
      guaranteed  as  to  principal and  interest  by the  U.S.  Government, its
      agencies, authorities or instrumentalities, the interest income from which
      is generally exempt from state income taxation.
 
      The Treasury Securities Fund invests  exclusively in securities issued  by
      the U.S. Treasury, which are supported by the full faith and credit of the
      United States.
 
   
An  investment in a  Fund is not  insured or guaranteed  by the U.S. Government.
While each Fund  attempts to  maintain a  stable net  asset value  of $1.00  per
share, there can be no assurance that it will be able to do so.
    
 
Each  Fund offers investors the  choice of investing in  two separate classes of
shares   representing   equal,   pro   rata   interests   in   its    investment
portfolio   --  'Institutional'  shares  and  'Financial  Intermediary'  shares.
Institutional shares  in  each  of  the Funds  are  available  for  purchase  by
institutional  investors. Financial Intermediary shares in each of the Funds are
available for  purchase by  banks  and other  financial intermediaries  for  the
benefit  of their customers and bear all  fees payable by the Funds to financial
intermediaries for certain  services they  provide to the  beneficial owners  of
these shares.
 
This  Prospectus briefly  sets forth  certain information  about the  Trust that
investors should  know before  investing.  Investors are  advised to  read  this
Prospectus  and retain it for future reference. Additional information about the
Trust, contained in a Statement of Additional Information dated the same date as
this Prospectus, has been filed with the Securities and Exchange Commission (the
'SEC') and is  available to investors  without charge by  calling the  telephone
number  set forth above. The Statement of Additional Information is incorporated
in its entirety by reference into this Prospectus. Shareholder inquiries may  be
directed to the Trust at the above address.
--------------------------------------------------------------------------------
 
   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.


<PAGE>
--------------------------------------------------------------------------------
                                   FEE TABLE
 
Each  Fund offers  two separate  classes of  shares --  Institutional shares and
Financial Intermediary shares. Shares  of each class  represent equal, pro  rata
interests in the Fund and accrue daily dividends in the same manner, except that
Financial  Intermediary  shares  bear  fees payable  by  the  Fund  to financial
intermediaries for  services they  provide  to the  beneficial owners  of  these
shares.  In addition,  financial intermediaries  may directly  charge beneficial
owners of Financial Intermediary shares with fees relating to their investments,
which are required to  be disclosed to those  owners by the intermediaries.  See
'Management  of  the  Trust  --  Financial  Intermediaries'  and  'Purchase  and
Redemption of Shares  -- Other Matters.'  Shares of the  Funds are sold  without
imposition  of any sales charge, deferred  sales charge or any other transaction
fee.
 
   
<TABLE>
<CAPTION>
                                  GOVERNMENT
                                SECURITIES FUND              MONEY MARKET FUND         TREASURY SECURITIES FUND
ANNUAL FUND OPERATING    ----------------------------- ----------------------------- -----------------------------
  EXPENSES                                 FINANCIAL                     FINANCIAL                     FINANCIAL
(as a percentage of       INSTITUTIONAL  INTERMEDIARY   INSTITUTIONAL  INTERMEDIARY   INSTITUTIONAL  INTERMEDIARY
average net assets)**        SHARES         SHARES*        SHARES         SHARES*        SHARES         SHARES*
------------------------ --------------- ------------- --------------- ------------- --------------- -------------
<S>                      <C>     <C>     <C>    <C>    <C>     <C>     <C>    <C>    <C>     <C>     <C>    <C>
Management Fee (after
  fee waivers)..........         .20%           .20%           .20%           .20%           .20%           .20%
Other Expenses (after
  reimbursements)
    Shareholder
      Servicing Fees....      0%           .25%             0%           .25%             0%           .25%
    Miscellaneous.......    .10%           .10%           .10%           .10%           .10%           .10%
                            ---            ---            ---            ---            ---            ---
        Total Other
          Expenses
          (after
      reimbursements)...         .10%           .35%           .10%           .35%           .10%           .35%
                                 ---            ---            ---            ---            ---            ---
    Total Fund Operating
      Expenses (after
      fee waivers and
     reimbursements)**..         .30%           .55%           .30%           .55%           .30%           .55%
                                 ---            ---            ---            ---            ---            ---
                                 ---            ---            ---            ---            ---            ---
</TABLE>
    
 
   
<TABLE>
<CAPTION>
EXAMPLE**                                                          1 YEAR          3 YEARS          5 YEARS         10 YEARS
-------------------------------------------------------------   -------------    ------------    -------------    ------------
<S>                                                             <C>              <C>             <C>              <C>
You would pay the following expenses on a $1,000  investment,
  assuming   (i)  a  5%  annual  return,  (ii)  total  annual
  operating expenses as shown in the fee table set out  above
  and  (iii) redemption at  the end of  each time period with
  respect to the following shares:
Government Securities Fund
    Institutional shares.....................................        $ 3             $ 10             $17             $ 38
    Financial Intermediary shares............................        $ 6             $ 18             $31             $ 69
Money Market Fund
    Institutional shares.....................................        $ 3             $ 10             $17             $ 38
    Financial Intermediary shares............................        $ 6             $ 18             $31             $ 69
Treasury Securities Fund
    Institutional shares.....................................        $ 3             $ 10             $17             $ 38
    Financial Intermediary shares............................        $ 6             $ 18             $31             $ 69
</TABLE>
    
 
     The  purpose  of  the  foregoing  table   is  to  assist  an  investor   in
understanding  the various costs  and expenses that  an investor in  a Fund will
bear directly or  indirectly but should  not be considered  a representation  of
past  or  future expenses  or  rate of  return.  With respect  to  the Financial
Intermediary shares, each Fund's 'other expenses' are based on estimates for the
Trust's current fiscal  year. Expenses associated  with distributing the  Funds'
shares are borne by the Trust's distributor out of its own resources and are not
borne  directly or indirectly by shareholders. For more complete descriptions of
the various costs and expenses, see 'Management of the Trust' in this Prospectus
and 'Investment  Advisory and  Other Services'  in the  Statement of  Additional
Information.
 
      *At  the date  of this  Prospectus, no  Financial Intermediary  shares are
outstanding.
 
   
     **Information in the  expense table and  the example has  been restated  to
reflect  an agreement  by the  Trust's investment  adviser and  administrator to
waive .05% of  its advisory and  administration fee and  to reduce or  otherwise
limit  the expenses of  each Fund, on an  annualized basis, to  .30% and .55% of
each Fund's average  daily net  assets in  respect of  Institutional shares  and
Financial  Intermediary shares,  respectively. In  the absence  of the agreement
described in  the  first  sentence  of  this  note,  the  Money  Market  Fund's,
Government  Securities Fund's  and Treasury
    
 
                                       2
 
<PAGE>
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Securities Fund's total  operating expenses would have been .37%, .47% and .84%,
respectively,  of  their  average  net assets for Institutional shares and would
have been .62%, .72% and 1.09% (estimated), respectively, of  their  average net
assets in respect of Financial  Intermediary  shares.  Without  this  agreement,
under the assumptions set forth in the example above, the expenses on  a  $1,000
investment in the Money Market Fund's, Government  Securities  Fund and Treasury
Securities Fund at the end of one, three, five and ten years would have been $4,
$12, $21 and $47; $5, $15, $26 and $59; and $9, $27, $47 and $104, respectively,
for Institutional shares  and would have been $6,  $20,  $35 and  $77;  $7, $23,
$40   and  $89;  and  $11,  $35,  $60  and $133 (estimated),  respectively,  for
Financial Intermediary shares. Management of the Trust  does not anticipate that
it will waive its fees or reimburse expenses in the current fiscal year,  except
to  the  extent  necessary  to comply with its  fee  waiver  and  total  expense
limitation agreement described in the first sentence of this note.
    
 
     The   Funds  are  offered  to  participants  in  the  PaineWebber  Resource
Management  Account  ('RMA')'r'   program.  The  Funds   are  also  offered   to
participants  in the  PaineWebber Business Services Account ('BSA')'sm' program.
PaineWebber currently charges an annual $85  account charge for the RMA  program
and  $125 for the BSA program. The account charges are not included in the table
because certain  non-RMA  and non-BSA  participants  are permitted  to  purchase
shares of the Funds.
 
                                       3
 
<PAGE>
--------------------------------------------------------------------------------
 
                                   HIGHLIGHTS
 
<TABLE>
<S>                         <C>
------------------------------------------------------------------------------------------------------------------
-------------------
The Trust                   The Trust is a no-load, open-end investment company.
------------------------------------------------------------------------------------------------------------------
-------------------
The Funds                   Each  Fund seeks high current income to the  extent consistent with the preservation of capital
                            and the  maintenance  of liquidity  through  investments in  a  diversified portfolio  of  high
                            quality, short term, U.S. dollar denominated money market instruments.
                            The  Money Market Fund invests in securities issued  or guaranteed as to principal and interest
                             by the  U.S.  Government,  its  agencies,  authorities  and  instrumentalities,  high  quality
                             obligations  of U.S. and foreign  banks, high quality commercial  paper and other high quality
                             obligations of U.S. and foreign companies and foreign governments and repurchase agreements.
                            The Government Securities Fund invests in securities  issued or guaranteed as to principal  and
                             interest  by  the U.S.  Government and  its agencies,  authorities and  instrumentalities, the
                             interest income from which is generally exempt from state income taxation.
                            The Treasury Securities  Fund invests exclusively  in securities issued  by the U.S.  Treasury,
                             which are supported by the full faith and credit of the United States.
------------------------------------------------------------------------------------------------------------------
-------------------
Benefits of                 Mutual  funds,  such  as  the  Trust,  are  flexible  investment  tools  that  are increasingly
Investing                   popular -- for very sound reasons. The Trust offers investors the following important benefits:
in the Funds                Funds Designed For Institutions
                             The  Funds are designed primarily for institutions  as an economical and convenient means  for
                             the  investment of short term funds that they hold for their own account or hold or manage for
                             others. These institutions  include corporations, banks,  trust companies, investment  bankers
                             and  brokers,  insurance companies,  investment counsellors,  pension funds,  employee benefit
                             plans, law firms, trusts, estates and educational, religious and charitable organizations. See
                             'Purchase and Redemption of Shares' and 'Management of the Trust -- Financial Intermediaries.'
 
                            Professional Management
                             By  pooling the funds of many investors, each Fund enables shareholders to obtain the benefits
                             of full-time professional  management and a  degree of diversification  of investment that  is
                             beyond  the means  of most  investors. The Funds'  investment adviser  reviews the fundamental
                             characteristics of far more securities  than can a typical  investor and may employ  portfolio
                             management   techniques  that  frequently  are  not  used  by  many  institutional  investors.
                             Additionally, the larger denominations of securities in  which the Funds invest may result  in
                             better overall prices for the investments. See 'Investment Objective and Policies.'
</TABLE>
 
                                       4
 
<PAGE>
--------------------------------------------------------------------------------
 
   
<TABLE>
<S>                         <C>
                            Transaction Savings
                             By  investing in a Fund, a shareholder is able to acquire ownership in a diversified portfolio
                             of securities without paying the  higher transaction costs associated  with a series of  small
                             securities purchases.
 
                            Convenience
                             Fund   shareholders   are  relieved  of  the  administrative  and  recordkeeping  burdens  and
                             coordination of maturities normally associated with direct ownership of securities. Owners  of
                             Financial  Intermediary shares receive various  services from financial intermediaries through
                             which they acquire and hold their shares. See 'Purchase and Redemption of Shares' and 'Manage-
                             ment of the Trust -- Financial Intermediaries.'
 
                            Quality
                             All  securities  in  which each  Fund  invests are  determined  to be  of  high quality  by  a
                             nationally  recognized  statistical rating  organization, or  determined  to be  of comparable
                             quality by  the Trust's  investment  adviser acting  under the  supervision  of the  Board  of
                             Trustees  if  not so  rated, and  also are  determined  to present  minimal credit  risks. Any
                             purchase of unrated securities  or securities that  are rated only by  a single rating  agency
                             must   be   approved   or  ratified   by   the   Trustees.  See   'Investment   Objective  and
                             Policies -- Certain Investment Policies -- Portfolio Quality and Maturity.'
 
                            Liquidity
                             The  Funds'  convenient purchase  and redemption  procedures provide  shareholders with  ready
                             access  to their money  and reduce the delays  frequently involved in  the direct purchase and
                             sale of securities. See 'Purchase and Redemption of Shares.'
 
                            Exchange Privilege
                             Shareholders  of a Fund may exchange all or part of their shares for shares of the same  class
                             of  either of the other Funds in the Trust. See 'Purchase and Redemption of Shares -- Exchange
                             Privilege.'
 
------------------------------------------------------------------------------------------------------------------
-------------------
Shares                      Each Fund proposes to offer investors the choice of investing in two separate classes of shares
                            representing pro rata interests in its investment portfolio.
                            Institutional shares in each Fund are available for purchase by institutional investors.
                            Financial Intermediary  shares in  each Fund  are available  for purchase  by banks  and  other
                             financial  intermediaries for the benefit of their customers  and bear all fees payable by the
                             Funds to financial intermediaries for certain  services they provide to the beneficial  owners
                             of   those   shares.  See   'Purchase   and  Redemption   of   Shares,'  'Management   of  the
                             Trust -- Financial Intermediaries' and 'Description of Shares.'
</TABLE>
    
 
                                       5
 
<PAGE>
   
<TABLE>
<S>                         <C>
------------------------------------------------------------------------------------------------------------------
-------------------
Purchase and                The minimum initial investment in the Funds  is $250,000 and there is no subsequent  investment
Redemption                  minimum.  Effective  October 1,  1995,  the minimum  initial investment  in  the Funds  will be
of Shares                   $1,000,000 and there will continue to be no subsequent investment minimum. Shares of each  Fund
                            are  available through the RMA and  BSA programs. Shares may be  redeemed by wire, telephone or
                            mail. See 'Purchase and Redemption of Shares.'
 
------------------------------------------------------------------------------------------------------------------
-------------------
Management                  PaineWebber Incorporated ('PaineWebber') serves as investment adviser and administrator of each
Services                    Fund and receives a fee,  accrued daily and paid  monthly, at the annual  rate of .25% of  each
                            Fund's  average daily net  assets. PaineWebber has undertaken  to waive .05% of  its fee and to
                            maintain each Fund's total annual operating expenses at a level not exceeding .30% and .55%  of
                            the   Fund's  average  daily  net  assets  annually  for  Institutional  shares  and  Financial
                            Intermediary  shares,  respectively.  Mitchell   Hutchins  Asset  Management  Inc.   ('Mitchell
                            Hutchins')   serves  as  each  Fund's  sub-adviser  and  sub-administrator  and  receives  from
                            PaineWebber (not  the  Fund)  20% of  the  fee  received  by PaineWebber  from  the  Fund.  See
                            'Management of the Trust.'
 
------------------------------------------------------------------------------------------------------------------
-------------------
Distributor                 PaineWebber serves as the distributor of the Funds' shares.
 
------------------------------------------------------------------------------------------------------------------
-------------------
Dividends                   Substantially  all of  each Fund's net  investment income is  declared daily as  a dividend and
                            distributed to shareholders monthly. See 'Dividends, Distributions and Taxes.'
 
------------------------------------------------------------------------------------------------------------------
-------------------
Risk Factors                The Money Market  Fund may invest  in U.S.  dollar denominated securities  of foreign  issuers,
                            which  may present a greater degree of risk than investments in securities of domestic issuers.
                            The Fund may also enter into repurchase agreements. In the event of the bankruptcy of the other
                            party to a repurchase agreement  or its failure to honor  its obligations thereunder, the  Fund
                            could  suffer losses,  including loss  of interest on  or principal  of the  security and costs
                            associated with  delay  and enforcement  of  its rights  under  the repurchase  agreement.  See
                            'Investment  Objective and Policies -- Certain Securities, Investment Techniques and Associated
                            Risk Factors.'
</TABLE>
    
 
                                       6
 
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                      [THIS PAGE INTENTIONALLY LEFT BLANK]
 
                                       7
 
<PAGE>
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                              FINANCIAL HIGHLIGHTS
 
The financial information for  shares of the Funds  has been represented in  the
table  below for each of the periods  shown. This information is supplemented by
the financial statements and accompanying  notes appearing in the Funds'  Annual
Report  to Shareholders  for the  fiscal year  ended April  30, 1995,  which are
incorporated by  reference into  the Statement  of Additional  Information.  The
financial  statements  and  notes,  as  well as  the  information  in  the table
appearing below,  have  been  audited  by Deloitte  &  Touche  LLP,  independent
auditors, whose report thereof is included in the Annual Report to Shareholders.
 
<TABLE>
<CAPTION>
                                                                MONEY MARKET FUND
                           --------------------------------------------------------------------------------------------
                                                                                             FINANCIAL
                                                                                            INTERMEDIARY
                                        INSTITUTIONAL SHARES                                   SHARES
                           -----------------------------------------------  ------------------------------------------
                                                            FOR THE PERIOD                           FOR THE PERIOD
                           FOR THE YEARS ENDED APRIL 30,   JUNE 3, 1991 'D'                         MARCH 17, 1994'D'
                           ------------------------------         TO         FOR THE YEAR ENDED            TO
                             1995       1994       1993     APRIL 30, 1992     APRIL 30, 1995        APRIL 30, 1994
                           --------   --------   --------   --------------   ------------------  ----------------------
<S>                        <C>        <C>        <C>        <C>              <C>                 <C>
Net asset value:
  Beginning of period....  $   1.00   $   1.00   $   1.00      $   1.00           $   1.00              $   1.00
                           --------   --------   --------   --------------         -------               -------
  Net investment
    income...............     0.048      0.030      0.031         0.044              0.027                 0.004
  Net realized losses
    from investment
    transactions.........    (0.008)     --         --           --                  --                   --
  Dividends from net
    investment income....    (0.048)    (0.030)    (0.031)       (0.044)            (0.027)               (0.004)
                           --------   --------   --------   --------------         -------               -------
  Contribution to capital
    from predecessor
    adviser..............     0.008      --         --          --                   --                   --
                           --------   --------   --------   --------------         -------               -------
Net asset value:
  End of period..........  $   1.00   $   1.00   $   1.00      $   1.00           $   1.00              $   1.00
                           --------   --------   --------   --------------         -------               -------
                           --------   --------   --------   --------------         -------               -------
Total investment
  return(1)..............      4.91%      3.03%      3.16%         4.52%              3.10%                 0.37%
                           --------   --------   --------   --------------         -------               -------
                           --------   --------   --------   --------------         -------               -------
Ratios/Supplemental Data:
  Net assets, end of
    period (000's).......  $220,844   $254,281   $385,618      $335,868           --                    $  9,000
  Ratio of expenses to
    average net assets
    after
    waivers/reimbursement
    from adviser.........      0.35%      0.33%      0.34%         0.30%*             0.60%*                0.58%*
  Ratio of expenses to
    average net assets
    before
    waivers/reimbursement
    from adviser.........      0.37%      0.33%      0.36%         0.41%*             0.62%*                0.58%*
  Ratio of net investment
    income to average net
    assets...............      4.66%      2.96%      3.11%         4.65%*             4.15%*                2.93%*
</TABLE>
 
------------
 
 'D' Commencement of operations
 
 * Annualized
 
   
(1) Total  return is calculated assuming a $1,000 investment on the first day of
    each period  reported,  reinvestment  of  all  dividends  and  capital  gain
    distributions at net asset value of $1.00 per share, and a sale at net asset
    value on the last date of each period reported. Total return information for
    periods less than one year has not been annualized.
    
 
                                       8

<PAGE>
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<TABLE>
<CAPTION>
                                                              GOVERNMENT SECURITIES FUND
                                     ----------------------------------------------------------------------------
                                                                                                     FINANCIAL
                                                                                                   INTERMEDIARY
                                                       INSTITUTIONAL SHARES                           SHARES
                                     ---------------------------------------------------------    ---------------
                                                                               FOR THE PERIOD     FOR THE PERIOD
                                         FOR THE YEARS ENDED APRIL 30,         JUNE 3, 1991'D'    JULY 12, 1994'D'
                                     --------------------------------------          TO                 TO
                                        1995          1994          1993       APRIL 30, 1992     APRIL 30, 1995
                                     ----------    ----------    ----------    ---------------    ---------------
 
<S>                                 <C>           <C>           <C>           <C>                <C>
 Net asset value:
  Beginning of period....            $     1.00    $     1.00    $     1.00    $        1.00      $        1.00
                                     ----------    ----------    ----------    ---------------    ---------------
  Net investment
    income...............                 0.048         0.029         0.031            0.044              0.032
  Net realized losses
    from investment
    transactions.........                (0.008)       --            --             --                 --
  Dividends from net
    investment income....                (0.047)       (0.029)       (0.031)          (0.044)            (0.032)
                                     ----------    ----------    ----------    ---------------    ---------------
  Contribution to capital
    from predecessor
    adviser..............                 0.007        --            --             --                 --
                                     ----------    ----------    ----------    ---------------    ---------------
Net asset value:
  End of period..........            $     1.00    $     1.00    $     1.00    $        1.00      $        1.00
                                     ----------    ----------    ----------    ---------------    ---------------
                                     ----------    ----------    ----------    ---------------    ---------------
Total investment
  return(1)..............                  4.61%         2.97%         3.13%            4.46%              3.31%
                                     ----------    ----------    ----------    ---------------    ---------------
                                     ----------    ----------    ----------    ---------------    ---------------
Ratios/Supplemental Data:
  Net assets, end of
    period (000's).......            $   54,903    $   84,209    $  102,611    $     144,853           --
  Ratio of expenses to
    average net assets
    after
    waivers/reimbursement
    from adviser.........                  0.35%         0.35%         0.34%            0.30%*             0.60%*
  Ratio of expenses to
    average net assets
    before
    waivers/reimbursement
    from adviser.........                  0.47%         0.37%         0.36%            0.41%*             0.72%*
  Ratio of net investment
    income to average net
    assets...............                  4.63%         2.93%         3.09%            4.52%*             4.46%*
 
<CAPTION>
 
                                                       TREASURY SECURITIES FUND
                                     ------------------------------------------------------------
 
                                                         INSTITUTIONAL SHARES
                                     ------------------------------------------------------------
                                                                                 FOR THE PERIOD
                                         FOR THE YEARS ENDED APRIL 30,        DECEMBER 6, 1991 'D'
                                     --------------------------------------            TO
                                        1995          1994          1993         APRIL 30, 1992
                                     ----------    ----------    ----------    ------------------
<S>                                  <C>           <C>           <C>                  <C>
 Net asset value:
  Beginning of period....            $     1.00    $     1.00    $     1.00           $   1.00
                                     ----------    ----------    ----------           --------
  Net investment
    income...............                 0.049         0.028         0.029              0.016
  Net realized losses
    from investment
    transactions.........                (0.002)       --            --                 --
  Dividends from net
    investment income....                (0.047)       (0.028)       (0.029)            (0.016)
                                     ----------    ----------    ----------           --------
  Contribution to capital
    from predecessor
    adviser..............                --            --            --                 --
                                     ----------    ----------    ----------           --------
Net asset value:
  End of period..........            $     1.00    $     1.00    $     1.00           $   1.00
                                     ----------    ----------    ----------           --------
                                     ----------    ----------    ----------           --------
Total investment
  return(1)..............                  4.75%         2.87%         2.89%              1.62%
                                     ----------    ----------    ----------           --------
                                     ----------    ----------    ----------           --------
Ratios/Supplemental Data:
  Net assets, end of
    period (000's).......            $   23,762    $   38,602    $    8,064           $ 15,003
  Ratio of expenses to
    average net assets
    after
    waivers/reimbursement
    from adviser.........                  0.22%         0.18%         0.33%              0.06%*
  Ratio of expenses to
    average net assets
    before
    waivers/reimbursement
    from adviser.........                  0.84%         0.76%         1.10%              2.05%*
  Ratio of net investment
    income to average net
    assets...............                  4.89%         3.08%         2.88%              3.89%*
</TABLE>
 
                                       9
  
<PAGE>
--------------------------------------------------------------------------------
 
                                     YIELD
 
The chart below shows the current and effective yields, calculated in accordance
with  rules of  the SEC,  and the average  portfolio maturity  for the seven-day
periods ended April 30, 1995 and August 1, 1995.
 
<TABLE>
<CAPTION>
                                                                            INSTITUTIONAL SHARES*
                                                 ----------------------------------------------------------------------------
                                                  GOVERNMENT SECURITIES          MONEY MARKET          TREASURY SECURITIES
                                                           FUND                      FUND                      FUND
                                                 ------------------------  ------------------------  ------------------------
                                                   4/30/95      8/1/95       4/30/95      8/1/95       4/30/95      8/1/95
                                                 -----------  -----------  -----------  -----------  -----------  -----------
 
<S>                                              <C>          <C>          <C>          <C>          <C>          <C>
Current Yield..................................       5.74%        5.35%        5.77%        5.55%        5.67%        5.27%
Effective Yield................................       5.90%        5.49%        5.93%        5.70%        5.83%        5.41%
Average Portfolio Maturity.....................     31 days      28 days      41 days      36 days      32 days      30 days
</TABLE>
 
------------
 
 * As of  the date  of this  Prospectus, no  Financial Intermediary  shares  are
   outstanding.  Accordingly, yield  and average  portfolio maturity information
   for the  Financial  Intermediary  shares  are  not  being  reported  for  the
   seven-day periods ended April 30, 1995 and August 1, 1995.
 
     From  time to time,  each Fund advertises its  current yields and effective
yields for its  classes of shares.  The current yield  of a Fund  refers to  the
income  generated by an  investment in the  Fund over a  seven-day period, which
period will be stated in the advertisement. This income is then annualized; that
is, the amount of income generated by the investment during that week is assumed
to be generated each week over a 52-week period and is shown as a percentage  of
the   investment.  The  effective  yield   is  calculated  similarly  but,  when
annualized, the income  earned by an  investment in  the Fund is  assumed to  be
reinvested.  The effective yield will be  slightly higher than the current yield
because of the compounding effect of this assumed reinvestment.
 
     Investors should note that  the investment results of  a Fund are based  on
historical  performance  and will  fluctuate over  time.  Any presentation  of a
Fund's current yields  or effective yields  for any prior  period should not  be
considered  a representation  of what  an investment may  earn or  what a Fund's
current yields or effective yields may be in any future period.
 
     Current  yield   and  effective   yield  are   calculated  separately   for
Institutional  shares  and  Financial  Intermediary  shares.  Since  holders  of
Financial Intermediary shares bear all service fees for the services rendered by
financial intermediaries, the net yield on Financial Intermediary shares can  be
expected  at any given time to be approximately .25% lower than the net yield on
Institutional shares  and any  additional fees  directly assessed  by  financial
intermediaries  will have the effect of  further reducing the net yield realized
by a beneficial owner of Financial Intermediary shares.
 
     Performance data for the Funds in reports and promotional literature may be
compared to: (i) other mutual funds tracked by IBC/Donoghue's Money Fund  Report
and Lipper Analytical Services, widely used independent research firms that rank
mutual  funds  by  overall  performance, investment  objectives  and  assets, or
tracked by other services, companies,  publications or persons that rank  mutual
funds  on the  basis of  overall performance  or other  criteria; (ii) unmanaged
indices so that investors may compare the  Funds' results with those of a  group
of  unmanaged securities widely  regarded by investors  as representative of the
securities markets in general; and (iii) the Consumer Price Index, an  inflation
measure. Promotional and advertising literature also may refer to discussions of
the  Funds and comparative mutual fund  data and ratings reported in independent
periodicals.
 
                                       10
 
<PAGE>
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                       INVESTMENT OBJECTIVE AND POLICIES
 
The investment objective  of each Fund  is to  earn high current  income to  the
extent  consistent  with  the preservation  of  capital and  the  maintenance of
liquidity through investments in a diversified portfolio of high quality,  short
term, U.S. dollar denominated money market instruments.
 
MONEY MARKET FUND
 
The  Money  Market Fund  pursues  its objective  by  investing in  the following
instruments:
 
           Securities issued or guaranteed as  to principal and interest by  the
           U.S.  Government,  its  agencies,  authorities  or  instrumentalities
           ('U.S. Government securities').
 
           High quality obligations  issued or guaranteed  by U.S. banks  having
           more  than  $1.5 billion  in total  assets at  the time  of purchase,
           including  certificates  of  deposit,   fixed  time  deposits,   loan
           participation interests, commercial paper and bankers' acceptances.
 
           High  quality  U.S. dollar  denominated obligations,  including fixed
           time deposits, issued or guaranteed  by foreign banks, U.S.  branches
           of  foreign banks  (Yankee obligations), foreign  branches of foreign
           banks and foreign branches or subsidiaries of U.S. banks  (Eurodollar
           obligations)  having more  than $1.5 billion  in total  assets at the
           time of purchase. These bank  obligations may be general  obligations
           of  the parent bank  or may be  limited to the  issuing branch by the
           terms of the specific obligation or by government regulation.
 
   
           Commercial paper,  including  variable amount  master  demand  notes,
           issued  or  guaranteed by  U.S.  or foreign  corporations, commercial
           banks or other entities, that at the time of purchase are either  (1)
           rated  in  the highest  short-term rating  category  by at  least two
           nationally recognized  statistical rating  organizations  ('NRSROs'),
           (2) rated in the highest short-term rating category by a single NRSRO
           if  only that NRSRO has assigned  the obligations a short-term rating
           or (3) unrated, but determined by Mitchell Hutchins acting under  the
           supervision  of  the  Board  of Trustees  to  be  of  comparable high
           quality.
    
 
           Unrated notes, paper or other  instruments that are determined to  be
           of comparable high quality.
 
           Other   high   quality,  short   term  obligations,   including  loan
           participation interests,  issued or  guaranteed  by U.S.  or  foreign
           corporations or other entities.
 
           High quality obligations of the International Bank for Reconstruction
           and Development and other supranational entities.
 
           High quality obligations, limited to commercial paper and other short
           term  notes, issued  or guaranteed by  the governments  of the United
           Kingdom,  France,   Germany,   Belgium,   the   Netherlands,   Italy,
           Switzerland,  Denmark,  Norway,  Austria,  Finland,  Spain,  Ireland,
           Sweden, Australia, New Zealand, Japan and Canada.
 
           High quality asset-backed securities, including interests in pools of
           assets such  as motor  vehicle installment  purchase obligations  and
           credit card receivables.
 
                                       11
 
<PAGE>
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           Repurchase agreements.
 
     The  Fund may acquire  any of these  securities on a  forward commitment or
when-issued basis. The shares of the Fund  are not insured or guaranteed by  the
U.S. Government.
 
TREASURY SECURITIES FUND
 
The  Treasury Securities Fund pursues its  objective by limiting its investments
to securities issued by  the U.S. Treasury.  The Fund may  acquire any of  these
securities on a forward commitment or when-issued basis. The Fund will not enter
into repurchase agreements. The shares of the Fund are not insured or guaranteed
by the U.S. Government.
 
GOVERNMENT SECURITIES FUND
 
The  Government  Securities  Fund pursues  its  objective by  investing  in U.S.
Government securities, the interest income  from which is generally exempt  from
state  income taxation. The Fund intends  to emphasize investments in securities
eligible for  this  exemption  in  the  maximum  number  of  states.  Securities
generally  eligible for this exemption include those issued by the U.S. Treasury
and those issued by  certain agencies, authorities  or instrumentalities of  the
U.S. Government, including the Federal Home Loan Bank, Federal Farm Credit Banks
Funding  Corp. and the Student Loan  Marketing Association. Each investor should
consult its own  tax advisor to  determine whether distributions  from the  Fund
derived from interest on these obligations are exempt from state income taxation
in  the investor's own  state. The Fund intends  to invest all  of its assets in
securities  with  these  characteristics.  Under  extraordinary   circumstances,
however, such as when securities with those characteristics are unavailable, the
Fund  may temporarily hold  cash or invest in  other U.S. Government securities,
such as  those  issued by  the  Government National  Mortgage  Association,  the
Federal  Home Loan Mortgage  Corporation and the  Small Business Administration.
The Fund may  acquire any of  the above  securities on a  forward commitment  or
when-issued  basis.  The Fund  will not  enter  into repurchase  agreements. The
shares of the Fund are not insured or guaranteed by the U.S. Government.
 
CERTAIN SECURITIES, INVESTMENT TECHNIQUES AND ASSOCIATED RISK FACTORS
 
U.S. GOVERNMENT SECURITIES. Each Fund may invest in U.S. Government  securities.
Some  U.S. Government securities, such as  U.S. Treasury bills, notes and bonds,
which differ only in their interest rates, maturities and times of issuance, are
supported by  the  full  faith and  credit  of  the United  States.  Others  are
supported  either  by  (i) the  right  of the  issuer  to borrow  from  the U.S.
Treasury,  such  as  securities  of  the  Federal  Home  Loan  Banks,  (ii)  the
discretionary  authority  of  the  U.S.  Government  to  purchase  the  agency's
obligations, such as securities of the Federal National Mortgage Association, or
(iii) only the  credit of the  issuer, such  as securities of  the Student  Loan
Marketing  Association. No assurance can be  given that the U.S. Government will
provide financial support in the future to U.S. Government agencies, authorities
or instrumentalities that are not supported by the full faith and credit of  the
United States.
 
     Securities  guaranteed as to principal and interest by the U.S. Government,
its agencies, authorities or instrumentalities include (i) securities for  which
the  payment of  principal and  interest is backed  by an  irrevocable letter of
credit issued by  the U.S.  Government or any  of its  agencies, authorities  or
instrumentalities   and   (ii)   participations  in   loans   made   to  foreign
 
                                       12
 
<PAGE>
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governments or other entities that are  so guaranteed. The secondary market  for
certain  of these participations  is limited and, therefore,  may be regarded as
illiquid.
 
     U.S. Government securities may include  zero coupon securities that may  be
purchased when yields are attractive and/or to enhance portfolio liquidity. Zero
coupon  U.S.  Government  securities are  debt  obligations that  are  issued or
purchased at a significant discount  from face value. The discount  approximates
the  total amount  of interest  the security will  accrue and  compound over the
period until  maturity or  the particular  interest payment  date at  a rate  of
interest  reflecting the market  rate of the  security at the  time of issuance.
Zero coupon U.S. Government  securities do not require  the periodic payment  of
interest.  These investments benefit the issuer  by mitigating its need for cash
to meet  debt service,  but also  require a  higher rate  of return  to  attract
investors  who  are willing  to  defer receipt  of  cash. These  investments may
experience greater volatility  in market value  than U.S. Government  securities
that  make regular payments  of interest. The  Fund will accrue  income on these
investments  for  tax  and  accounting  purposes,  which  is  distributable   to
shareholders  and which, because no cash is received at the time of accrual, may
require the  liquidation of  other portfolio  securities to  satisfy the  Fund's
distribution  obligations. Zero coupon U.S. Government securities include STRIPS
and CUBES, which are issued by the U.S. Treasury as component parts of  Treasury
Bonds and represent scheduled interest and principal payments on the bonds.
 
     CUSTODIAL  RECEIPTS.  The Money  Market  Fund may  acquire  U.S. Government
securities in the  form of  custodial receipts  or certificates,  such as  CATS,
TIGRs and FICO Strips, underwritten by securities dealers or banks that evidence
ownership  of future  interest payments, principal  payments or  both on certain
notes or  bonds issued  by the  U.S. Government,  its agencies,  authorities  or
instrumentalities. The underwriters of these certificates or receipts purchase a
U.S.  Government security  and deposit the  security in an  irrevocable trust or
custodial  account  with  a  custodian  bank,  which  then  issues  receipts  or
certificates  that evidence ownership of  the periodic unmatured coupon payments
and the  final principal  payment  on the  U.S. Government  security.  Custodial
receipts  evidencing specific coupon or principal payments have the same general
attributes as zero coupon U.S.  Government securities, described above, but  are
not considered by the Trust to be U.S. Government securities. Although typically
under  the terms  of a custodial  receipt the  Fund is authorized  to assert its
rights directly against the issuer of the underlying obligation, the Fund may be
required to assert through the custodian  bank such rights as may exist  against
the  underlying issuer. Thus,  in the event  the underlying issuer  fails to pay
principal and/or interest when due, the Fund may be subject to delays,  expenses
and  risks that are greater than those that would have been involved if the Fund
had purchased a direct obligation of the issuer. In addition, in the event  that
the  trust  or  custodial account  in  which  the underlying  security  has been
deposited is determined to be an  association taxable as a corporation,  instead
of  a non-taxable entity, the yield on  the underlying security would be reduced
in respect of any taxes paid.
 
     SUPRANATIONAL ENTITIES. The Money Market Fund may invest in debt securities
issued by  supranational  organizations  such  as  the  International  Bank  for
Reconstruction  and Development (commonly referred to  as the World Bank), which
was chartered to  finance development projects  in developing member  countries;
the European Community, which is a 12-nation organization engaged in cooperative
economic activities; the European Coal and Steel Community, which is an economic
union  of various  European nations'  steel and  coal industries;  and the Asian
Development Bank, which is an international development bank established to lend
funds,
 
                                       13
 
<PAGE>
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promote investment and  provide technical  assistance to member  nations in  the
Asian and Pacific regions.
 
     FOREIGN  SECURITIES.  The  Money  Market Fund  may  invest  in  U.S. dollar
denominated securities of foreign issuers, including debt securities of  foreign
corporations,  securities  issued  by foreign  governments  and  certificates of
deposit, bankers' acceptances, fixed time deposits and other obligations  issued
by  major  foreign  banks,  foreign  branches  or  subsidiaries  of  U.S.  banks
(Eurodollar obligations), U.S.  branches of foreign  banks (Yankee  obligations)
and foreign branches of foreign banks. Investment in foreign securities and bank
obligations  may present  a greater degree  of risk than  investment in domestic
securities because of less publicly  available financial and other  information,
less  securities  regulation, potential  imposition  of foreign  withholding and
other taxes, war, expropriation or  other adverse governmental actions.  Foreign
banks  and their foreign branches are  not regulated by U.S. banking authorities
and generally are not bound by the accounting, auditing and financial  reporting
standards applicable to U.S. banks. In addition, the Fund may experience greater
difficulty  in obtaining and enforcing a  judgment against a foreign issuer than
against a domestic issuer.
 
   
     COMMERCIAL PAPER. The Money  Market Fund may  invest without limitation  in
fixed or variable rate commercial paper, including variable amount master demand
notes,  issued by U.S. or foreign  corporations. Commercial paper when purchased
by the Fund must be either (1)  rated in the highest short-term rating  category
by at least two NRSROs, (2) rated in the highest short-term rating category by a
single NRSRO if only that NRSRO has assigned the obligations a short-term rating
or (3) unrated, but determined by Mitchell Hutchins acting under the supervision
of  the Board  of Trustees  to be  of comparable  high quality.  Any purchase of
commercial paper  that is  unrated  or rated  only by  a  single NRSRO  must  be
approved  or ratified by the Board of Trustees. Any commercial paper issued by a
foreign corporation and  purchased by the  Fund must not  be subject to  foreign
withholding tax at the time of purchase.
    
 
     Variable  amount master demand notes  are unsecured instruments that permit
the indebtedness to vary  and provide for periodic  adjustments in the  interest
rate.   Because  variable  amount   master  demand  notes   are  direct  lending
arrangements between the  Fund and  the issuer,  they are  not normally  traded.
Although  no active secondary  market may exist  for these notes,  the Fund will
purchase only  those notes  under which  it may  demand and  receive payment  of
principal  and accrued interest daily  or may resell the  note to a third party.
While the notes are not typically rated by statistical rating agencies,  issuers
of  variable amount master demand notes  must satisfy Mitchell Hutchins that the
same criteria are met as are set forth above for issuers of commercial paper. In
the event an  issuer of  a variable  rate master  demand note  defaulted on  its
payment  obligation, the Fund might be unable  to dispose of the note because of
the absence of a secondary market and could, for this or other reasons, suffer a
loss to the extent of the default.
 
   
     OTHER CORPORATE  DEBT OBLIGATIONS.  The  Money Market  Fund may  invest  in
bonds,  notes and  debentures issued  by U.S. corporations  that at  the time of
purchase meet the Fund's maturity requirements  and are either (1) rated in  the
highest  short-term rating  category by  at least two  NRSROs, (2)  rated in the
highest short-term rating  category by  a single NRSRO  if only  that NRSRO  has
assigned  the obligations a short-term rating  or (3) unrated, but determined by
Mitchell Hutchins acting under the supervision of the Board of Trustees to be of
comparable high quality. Any purchase of an obligation that is unrated or  rated
only  by a  single rating agency  must be approved  or ratified by  the Board of
Trustees.
    
 
                                       14
 
<PAGE>
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     REPURCHASE AGREEMENTS.  The Money  Market Fund  may enter  into  repurchase
agreements  with selected broker-dealers, banks or other financial institutions.
A repurchase agreement is an agreement under which the Fund purchases securities
and the seller agrees to  repurchase the securities at  a particular time and  a
specified  price.  This  price  will exceed  the  original  purchase  price, the
difference being income to the Fund, and will be unrelated to the interest  rate
on  the purchased security.  The Trust's custodian will  maintain custody of the
purchased securities  for  the duration  of  the  agreement. The  value  of  the
purchased  securities, including accrued interest, will at all times be equal to
not less than 102%  of the value  of the repurchase agreement.  In the event  of
bankruptcy  of the seller or failure of  the seller to repurchase the securities
as agreed,  the Fund  could suffer  losses,  including loss  of interest  on  or
principal of the security and costs associated with delay and enforcement of its
rights under the repurchase agreement.
 
     LOAN   PARTICIPATIONS.   The  Money   Market  Fund   may  invest   in  loan
participations. A  loan  participation  is an  interest  in  a loan  to  a  U.S.
corporation  that is administered and sold by an intermediary bank. The borrower
of the underlying  loan will be  deemed to  be the issuer  of the  participation
interest  except to the extent the Fund derives its rights from the intermediary
bank  that  sold  the  loan  participation.  Loan  participations  are  illiquid
securities  and, accordingly, the Fund's investments  in them, together with all
other illiquid securities, will not exceed 10% of the Fund's net assets.
 
     FORWARD COMMITMENTS  AND WHEN-ISSUED  SECURITIES.  Each Fund  may  purchase
when-issued  securities and enter into contracts  to purchase or sell securities
for a  fixed  price  at  a  future date  beyond  customary  settlement  time.  A
purchasing  Fund is required to  hold and maintain in  a segregated account with
the Trust's custodian until the settlement date cash, U.S. Government securities
or other high quality, liquid debt  obligations in an amount sufficient to  meet
the  purchase price. Alternatively, the Fund may enter into offsetting contracts
for the forward sale of other  securities that it owns. Securities purchased  or
sold  on a when-issued or forward commitment basis involve a risk of loss if the
value of the security to be purchased  declines prior to the settlement date  or
if  the value of the security to be sold increases prior to the settlement date.
Although a Fund generally would purchase securities on a when-issued or  forward
commitment  basis with the intention of  acquiring securities for its portfolio,
the Fund may dispose  of a when-issued security  or forward commitment prior  to
settlement if Mitchell Hutchins deems it appropriate to do so. The Fund will not
accrue  income prior to  the delivery or  issuance of securities  purchased on a
when-issued or forward commitment basis.
 
     LENDING OF PORTFOLIO SECURITIES. The Money Market Fund may seek to increase
its income by lending portfolio  securities. Under present regulatory  policies,
these  loans  may  be made  to  institutions,  such as  broker-dealers,  and are
required to be secured continuously by  collateral in cash, cash equivalents  or
U.S.  Government securities maintained on a current  basis in an amount at least
equal to  the  market value  of  the  securities loaned.  If  Mitchell  Hutchins
determines  to  make securities  loans, it  is  intended that  the value  of the
securities loaned would not exceed 30% of  the value of the total assets of  the
Fund.  As  with  other  extensions  of  credit,  there  are  risks  of  delay in
recovering, or even loss of rights in, the collateral should the borrower of the
securities fail financially.
 
                                       15
 
<PAGE>
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CERTAIN INVESTMENT POLICIES
 
     INVESTMENT RESTRICTIONS.  The Trust  on  behalf of  each Fund  has  adopted
certain  investment restrictions that are enumerated  in detail in the Statement
of Additional Information.  Among other  restrictions, each Fund  may not,  with
respect to 75% of its total assets taken at market value, invest more than 5% of
its  total assets in  the securities of  any one issuer  (except U.S. Government
securities and, with  respect to  the Money Market  Fund, repurchase  agreements
collateralized  by U.S. Government  securities) or acquire more  than 10% of any
class of the outstanding voting securities of any one issuer. In addition,  each
Fund  may not invest more than 25% of  its total assets in securities of issuers
in any one industry, provided that there is no 25% limitation in respect of, and
the Money Market Fund reserves freedom of action to concentrate its  investments
in,  U.S. Government securities, obligations  other than commercial paper issued
or guaranteed by U.S.  banks and repurchase agreements  and loans of  securities
collateralized  by  U.S. Government  securities or  these bank  obligations. The
Trust, on behalf of a Fund, may  borrow money as a temporary measure from  banks
in  an aggregate amount not exceeding one-third of the value of the Fund's total
assets. A Fund  may not purchase  securities while borrowings  exceed 5% of  the
value of the Fund's assets.
 
     The  investment restrictions listed above, as well as the Funds' investment
objective, are  fundamental policies  and accordingly  may not  be changed  with
respect to any Fund without the approval of a majority of the outstanding shares
of  that Fund, as defined in the Investment Company Act of 1940, as amended (the
'Act'). Unless otherwise specifically  stated, however, the investment  policies
and  practices of each Fund are not fundamental  and may be changed by the Board
of Trustees.
 
     Notwithstanding the restrictions  listed above, to  the extent required  by
the  rules of the SEC, the Money Market Fund will not invest more than 5% of its
assets in the obligations of  any one issuer. A Fund  will not invest more  than
10%  of the value of  its net assets in  securities that are illiquid, including
time deposits and  repurchase agreements maturing  in more than  seven days  and
that  cannot be  liquidated prior  to maturity, as  well as  securities that are
illiquid by virtue of the absence of a readily available market. Securities that
have legal or contractual  restrictions on resale but  have a readily  available
market are not deemed illiquid for this purpose.
 
   
     PORTFOLIO  QUALITY  AND  MATURITY. Each  Fund  maintains  a dollar-weighted
average portfolio maturity of 90 days or less. All securities in which each Fund
invests have remaining maturities of 397 days  or less on the date of  purchase,
are  denominated in U.S. dollars and have  been determined to be of high quality
by NRSROs  or  determined  to be  of  comparable  quality if  not  so  rated.  A
description  of these ratings  is provided in  the Appendix to  the Statement of
Additional Information. Mitchell Hutchins, acting  under the supervision of  and
procedures  adopted  by  the  Board of  Trustees,  will  determine  that unrated
securities purchased by a Fund are of  high quality and will determine that  all
securities  purchased by a Fund present minimal credit risks and any purchase of
unrated securities or securities that are rated  only by a single NRSRO will  be
approved or ratified by the Board of Trustees. Mitchell Hutchins will, under the
supervision of the Board of Trustees, cause a Fund to dispose of any security as
soon  as practicable if  the security is  no longer of  high quality, unless the
Board of Trustees determines that this action would not be in the best  interest
of  the Fund. High quality,  short term instruments may  result in a lower yield
than instruments with a lower quality or a longer term.
    
 
                                       16
 
<PAGE>
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                       PURCHASE AND REDEMPTION OF SHARES
 
NET ASSET VALUE
 
The net asset  value of each  Fund is  determined daily at  12:00 noon,  Eastern
time, Monday through Friday ('Business Day'), except that net asset value is not
computed  on days on which the New York  Stock Exchange is not open for trading.
The New  York  Stock  Exchange currently  is  scheduled  to be  closed  for  the
observance  of  New  Year's Day,  Presidents'  Day, Good  Friday,  Memorial Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day. Net asset value
per share of each Fund is calculated  by adding the value of all securities  and
other  assets of the Fund, subtracting the  liabilities of the Fund and dividing
the remainder  by the  number of  outstanding shares  of the  Fund. Each  Fund's
portfolio securities are valued at their amortized cost which does not take into
account  unrealized securities gains  or losses. This  method involves initially
valuing  an  instrument  at  its   cost  and  thereafter  assuming  a   constant
amortization  to maturity  of any premium  paid or discount  received. Each Fund
attempts to maintain a constant net asset value of $1.00 per share but there can
be no assurance that it will be able to do so on a continuing basis.
 
PURCHASE PROCEDURES
 
The purchase price for shares of the Funds is the net asset value per share next
determined after  receipt by  the Funds  of  a purchase  order in  proper  form.
Purchase  orders received before 12:00 noon, Eastern time, for which payment has
been received by PaineWebber will be  executed at that time and the  shareholder
will  receive the dividend declared on  that day. Purchase orders received after
12:00 noon, Eastern time, and purchase  orders received earlier in the same  day
for  which payment has  not been received  by 12:00 noon,  Eastern time, will be
executed at 12:00  noon, Eastern  time, the following  day if  payment has  been
received  by  PaineWebber by  that time,  and the  shareholder will  receive the
dividend declared on the following day.
 
     Each Fund  proposes to  offer  investors the  choice  of investing  in  two
separate  classes of  shares representing pro  rata interests  in its investment
portfolio  --   Institutional   shares  and   Financial   Intermediary   shares.
Institutional  shares in each  Fund are available  for purchase by institutional
investors, although  the Trust  reserves the  right to  waive this  requirement.
Financial  Intermediary shares in each Fund  are available for purchase by banks
and other financial intermediaries for the  benefit of their customers and  bear
all  fees payable by  the Fund to financial  intermediaries for certain services
they provide to the beneficial owners of these shares.
 
   
     In order  to  maximize earnings,  each  Fund  attempts to  be  invested  as
completely as practicable and is normally required to make settlement in Federal
funds  for securities  purchased. Accordingly,  payment for  Fund shares  is not
effective until received in or converted to Federal funds immediately  available
to the Trust. The minimum initial investment in any Fund or combination of Funds
is  $250,000, which  may be  waived at  the discretion  of PaineWebber; however,
financial intermediaries purchasing shares for  the accounts of their  customers
may  set a higher  minimum for their  customers. There is  no minimum subsequent
investment. The Trust  and PaineWebber  each reserves  the right  to reject  any
purchase  order for any  reason. Effective October 1,  1995, the minimum initial
investment in any Fund or combination of Funds will be $1,000,000 and there will
continue to be no minimum subsequent investment.
    
 
                                       17
 
<PAGE>
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     Shares of  each  Fund are  available  through  the RMA  and  BSA  programs.
Balances of $1 or more are invested daily. The Trust and PaineWebber reserve the
right  to reject any purchase  order and to suspend  the offering of Fund shares
for a period of time.
 
     On any Business Day, a Fund  will accept purchase orders and credit  shares
to investors' accounts as follows.
 
     PURCHASES  WITH  FUNDS HELD  AT PAINEWEBBER.  All deposits  to RMA  and BSA
participants' brokerage  accounts and  any free  credit cash  balances that  may
arise  in such  brokerage accounts will  be automatically invested  in shares of
their Fund,  provided  that Federal  funds  are available  for  the  investment.
Federal  funds normally are available for cash balances arising from the sale of
securities held in a brokage account  on the Business Day following  settlement,
but in some cases can take longer.
 
     PURCHASES  BY WIRE.  RMA and BSA  participants may also  purchase shares of
their Fund by instructing their banks to transfer Federal funds by wire to their
RMA or BSA account. Wire transfers should be directed to: Bank of New York,  ABA
021000018, PaineWebber Inc., A/C 890-0114-088, OBI=FBO [Account Name]/[Brokerage
Account  Number].  The wire  must include  the  investor's name  and RMA  or BSA
brokerage account number. RMA  or BSA participants  wishing to transfer  Federal
funds into their accounts should contact their PaineWebber investment executives
or correspondent firms to determine the appropriate wire instructions.
 
     To the extent that the amounts transferred by wire create a cash balance in
an  investor's account, that cash balance  will be automatically invested in the
investor's Fund.
 
     If PaineWebber receives a notice from an investor's bank of a wire transfer
of Federal funds by 12:00 noon, Eastern  time, on a Business Day, the  automatic
investment  will  be executed  on that  Business  Day. Otherwise,  the automatic
investment will be executed  at 12:00 noon, Eastern  time, on the next  Business
Day.  PaineWebber and/or an investor's bank may impose a service charge for wire
transfers.
 
REDEMPTIONS
 
Shareholders may redeem any number of  shares from their Fund accounts by  wire,
by  telephone or  by mail. Shares  will be redeemed  at the net  asset value per
share next  determined after  receipt by  the Funds'  transfer agent  ('Transfer
Agent')  of instructions from  PaineWebber to redeem.  PaineWebber delivers such
instructions to the Transfer Agent prior to the determination of net asset value
at 12:00 noon, Eastern time, on any Business Day.
 
     The price at which a redemption request is executed is the net asset  value
per  share next  determined after  proper redemption  instructions are received.
Payment for redemption  orders, if  any, that  are received  before 12:00  noon,
Eastern time, normally is made on the same Business Day. Shares redeemed in this
manner  will not be entitled to the  dividend declared on the day of redemption.
Payment for redemption orders that are received at or after 12:00 noon,  Eastern
time,  will be made  on the next  Business Day following  the redemption. Shares
redeemed in this  manner are entitled  to the  dividend declared on  the day  of
redemption.
 
                                       18
 
<PAGE>
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EXCHANGES
 
Shares  of each Fund may be exchanged for  shares of the same class of any other
Fund at net asset value next determined by telephone or at a PaineWebber  branch
office.  The exchange privilege may be modified or terminated in accordance with
the rules  of the  SEC.  The exchange  privilege  is available  to  shareholders
resident  in any state  in which the  Fund shares being  acquired legally may be
sold.
 
OTHER MATTERS
 
The Trust does not issue certificates representing shares, but PFPC Inc., as the
Trust's transfer agent, maintains a  complete record of transactions and  shares
held in each shareholder's account.
 
     Fund  shares are  sold and  redeemed without  charge by  the Fund, although
financial  intermediaries  purchasing  or  holding  shares  for  their  customer
accounts may charge customers for cash management and other services provided in
connection  with  their accounts  including,  for instance,  account maintenance
fees, compensating balance requirements or  fees based on account  transactions,
assets  or  income.  Further,  the dividends  payable  to  beneficial  owners of
Financial Intermediary shares will be reduced in respect of fees paid by a  Fund
to  financial intermediaries through which those  shares are purchased and held.
See 'Management of  the Trust  -- Financial Intermediaries.'  A customer  should
consider  the terms of his  or her account with  a financial intermediary before
purchasing shares. A  financial intermediary purchasing  or redeeming shares  on
behalf of its customers is responsible for transmitting orders to PaineWebber in
accordance with its customer agreements.
 
     Investors  desiring to engage in purchase, sale or exchange transactions by
telephone  as  described  above  should  contact  their  PaineWebber  investment
executives  to  complete  the  required  documentation.  Neither  the  Trust nor
PaineWebber will be liable for following instructions communicated by  telephone
that  it reasonably believes to be genuine. The Trust employs certain procedures
designed to confirm  that instructions  communicated by  telephone are  genuine.
Upon  receiving transfer  instructions by telephone,  it is the  practice of the
Trust to compare the transfer instructions received by telephone to the  written
instructions  of the shareholder  on the shareholder's  account opening form. In
the event that the transfer instructions received by the Trust by telephone vary
from the instructions on the shareholder's account opening form, the Trust  will
require  written  instructions  that  are  accompanied  by  a  signature  of the
registered shareholder  that  matches the  signature  on file  with  the  Trust.
Failure  to employ  these procedures may  cause the  Funds to be  liable for any
losses due to unauthorized or fraudulent instructions.
 
                            MANAGEMENT OF THE TRUST
 
TRUSTEES AND OFFICERS
 
The business and affairs  of the Trust  are managed under  the direction of  its
Board  of Trustees. The day-to-day operations of the Trust are conducted through
or under the direction of its officers. The Statement of Additional  Information
contains  general background information  regarding each Trustee  and officer of
the Trust.
 
                                       19
 
<PAGE>
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INVESTMENT ADVISER AND ADMINISTRATOR
 
At a  special  meeting  of shareholders  that  took  place on  April  13,  1995,
shareholders  approved a  new investment  advisory and  administration agreement
with PaineWebber and  a new sub-advisory  and sub-administration agreement  with
Mitchell  Hutchins. PaineWebber and Mitchell Hutchins are located at 1285 Avenue
of the Americas, New York, New York  10019. Mitchell Hutchins is a wholly  owned
subsidiary  of PaineWebber, which in turn is  wholly owned by Paine Webber Group
Inc., a publicly owned financial services holding company. As of July 31,  1995,
PaineWebber  or Mitchell Hutchins served as investment adviser or sub-adviser to
41 investment  companies  with  an  aggregate  of  87  separate  portfolios  and
aggregate assets of approximately $28.9 billion.
 
     The  Funds  pay the  same fee  for  investment advisory  and administration
services to PaineWebber as previously  paid to Kidder Peabody Asset  Management,
Inc.  ('KPAM'),  the Fund's  predecessor  investment adviser  and administrator.
PaineWebber (not the  Funds) pay Mitchell  Hutchins a fee  for sub-advisory  and
sub-administration  services at the  annual rate of  20% of the  fee received by
PaineWebber from the Funds. PaineWebber and Mitchell Hutchins continue to manage
the Funds  in accordance  with the  Funds' investment  objectives, policies  and
restrictions.
 
   
     As  compensation for  PaineWebber's services, each  Fund has  agreed to pay
PaineWebber a fee, accrued daily and paid monthly, at the annual rate of .25% of
each Fund's average daily net assets.  PaineWebber has undertaken to waive  .05%
of  its fee  and to maintain  each Fund's  total annual operating  expenses at a
level not  exceeding  .30% and  .55%  of the  Fund's  average daily  net  assets
annually   for   Institutional   shares  and   Financial   Intermediary  shares,
respectively. After PaineWebber's waiver  of a portion of  the fees due it  from
the Treasury Securities Fund, the Fund paid fees for the fiscal year ended April
30,  1995 of .22% of  its average daily net assets.  With respect to each Fund's
Institutional shares, for the fiscal year  ended April 30, 1995, the  Government
Securities  Fund's,  Money Market  Fund's and  Treasury Securities  Fund's total
expenses represented .35%,  .35% and  .22%, respectively, of  their average  net
assets.  With respect to  the Financial Intermediary shares  of the Money Market
Fund and Government Securities Fund, for the fiscal period ended April 30, 1995,
total expenses represented .60% and  .60%, respectively, of their average  daily
net  assets. No  Financial Intermediary shares  of the  Treasury Securities Fund
were outstanding during that period.
    
 
     Although investment decisions  for each  Fund are  made independently  from
those  of the  other accounts managed  by Mitchell Hutchins,  investments of the
type each Fund may make  may also be made by  those other accounts. When a  Fund
and  one or  more other  accounts managed by  Mitchell Hutchins  are prepared to
invest in, or desire to dispose of, the same security, available investments  or
opportunities  for sales are allocated in a manner believed by Mitchell Hutchins
to be equitable to each. In some cases, this procedure may adversely affect  the
price  paid or  received by  the Fund or  the size  of the  position obtained or
disposed of by the Fund.
 
     Mitchell  Hutchins   investment   personnel  may   engage   in   securities
transactions  for  their  own  accounts  pursuant  to  a  code  of  ethics  that
establishes  procedures   for   personal   investing   and   restricts   certain
transactions.
 
                                       20
 
<PAGE>
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CUSTODIAN AND TRANSFER, DIVIDEND AND RECORDKEEPING AGENT
 
State  Street  Bank  and  Trust  Company,  One  Heritage  Drive,  North  Quincy,
Massachusetts 02171, serves as the Trust's custodian. PFPC Inc., a subsidiary of
PNC Bank, National Association, whose principal address is 400 Bellevue Parkway,
Wilmington,  Delaware  19809,  serves  as  the  Trust's  transfer  dividend  and
recordkeeping agent.
 
FINANCIAL INTERMEDIARIES
 
Financial  intermediaries, such as banks and  savings and loan associations, may
purchase Financial  Intermediary shares  for the  accounts of  their  customers.
Financial  Intermediary shares  are identical  in all  respects to Institutional
shares, except that beneficial owners  of Financial Intermediary shares  receive
certain  services directly from financial  intermediaries, bear the service fees
described below and enjoy certain exclusive voting rights on matters relating to
these services and fees. The Trust will enter into a service agreement with each
financial intermediary that purchases Financial Intermediary shares requiring it
to provide support services  to its customers who  are the beneficial owners  of
Financial  Intermediary shares in consideration of  the Trust's payment of .25%,
on an annualized basis, of  the average daily net  asset value of the  Financial
Intermediary  shares held by  the financial intermediary for  the benefit of its
customers. These  services,  which  are  described  in  greater  detail  in  the
Statement  of Additional Information under 'Management of the Trust -- Financial
Intermediaries,' include:  aggregating and  processing purchase  and  redemption
requests  from customers  and placing  net purchase  and redemption  orders with
PaineWebber; providing customers with a service that invests the assets of their
accounts in  Financial  Intermediary  shares; processing  dividend  payments  on
behalf  of customers;  providing information  periodically to  customers showing
their positions  in Financial  Intermediary shares;  arranging for  bank  wires;
responding  to  customer inquiries  relating to  the  services performed  by the
financial intermediary;  providing  sub-accounting  with  respect  to  Financial
Intermediary shares beneficially owned by customers or the information necessary
for  sub-accounting;  forwarding  shareholder  communications  from  a  Fund  to
customers, if required by law; and such other similar services as the Trust  may
reasonably request from time to time to the extent the financial intermediary is
permitted  to do  so under  federal and  state statutes,  rules and regulations.
Under the terms of the service agreements, financial intermediaries are required
to provide to their customers  a schedule of any  additional fees that they  may
charge  customers in connection with their investments in Financial Intermediary
shares. Financial  Intermediary  shares  are  available  for  purchase  only  by
financial  intermediaries  that have  entered into  service agreements  with the
Trust in connection  with their investment.  Financial intermediaries  providing
services to beneficial owners of Financial Intermediary shares in certain states
may be required to be registered as dealers under the laws of those states.
 
     Should  future legislative,  judicial or administrative  action prohibit or
restrict  the  activities  of  banks  serving  as  financial  intermediaries  in
connection  with the provision of support services to their customers, the Trust
might be  required  to alter  or  discontinue its  arrangements  with  financial
intermediaries  and change  its method of  operations with  respect to Financial
Intermediary shares. It  is not  anticipated, however,  that any  change in  the
Trust's  method of  operations would  affect its net  asset values  per share or
result in a financial loss to any shareholder.
 
                                       21
 
<PAGE>
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                       DIVIDENDS, DISTRIBUTIONS AND TAXES
 
DIVIDENDS AND DISTRIBUTIONS

    

Substantially all of each Fund's net  investment income (i.e., its income  other
than  its net realized long term and short term capital gains) is declared daily
as a dividend and  paid to shareholders  shortly before the  end of each  month.
Each  Fund declares and  distributes at least  annually, after the  close of its
fiscal year, substantially  all of  its net realized  short term  and long  term
capital  gains, if  any. Dividends and  capital gains distributions  are made in
additional  shares  of  the  same  class  and  Fund  or,  at  the  election   of
shareholders,  in cash, as  the case may be,  prior to the  last business day of
each month. The election to reinvest dividends and distributions or receive them
in cash may be changed at any time upon written notice to PaineWebber.  Although
realized  gains and losses on  the assets of each Fund  are reflected in the net
asset value of each Fund,  they are not expected to  be of an amount that  would
affect a Fund's net asset value of $1.00 per share.

     

TAXES
 
Each  Fund is treated as a separate  entity for federal income tax purposes, has
qualified for the fiscal year ended April 30, 1995 to be treated as a  regulated
investment  company under  the Internal  Revenue Code  of 1986,  as amended (the
'Code'), and has elected or intends to elect this treatment for each year. If  a
Fund (i) qualifies as a regulated investment company and (ii) distributes to its
shareholders  at least  90% of  its net  investment income  (including, for this
purpose, its net realized short term capital  gains), then the Fund will not  be
liable for federal income taxes to the extent that its net investment income and
its  net realized long term and short  term capital gains are distributed to its
shareholders. The  Trust  anticipates that  each  Fund will  distribute  to  its
shareholders  at least  90% of  its net  investment income  (including, for this
purpose, its net realized short term capital gains) in each of its fiscal years.
Further, the Code imposes a 4% non-deductible excise tax on a Fund to the extent
that a  Fund does  not  distribute by  the end  of  each calendar  year  certain
undistributed  amounts of net  investment income and net  realized long term and
short term capital gains. Each Fund  anticipates that it will pay any  dividends
and  make any distributions that are necessary in order to avoid the application
of this excise tax.
 
     Dividends of net investment income and distributions of net realized  short
term  capital  gains, as  a general  rule,  will be  taxable to  shareholders as
ordinary income whether received in cash or reinvested in additional shares. The
Trust does not expect the Funds to realize any long term capital gains and  thus
does  not contemplate that the Funds  will pay dividends taxable to shareholders
as long term  capital gains.  The Funds'  dividends and  distributions will  not
qualify  for the dividends-received deduction  for corporations. Some states, if
certain  asset   and   diversification  requirements   are   satisfied,   permit
shareholders to treat their portions of a Fund's dividends that are attributable
to  interest on U.S. Treasury securities  and certain U.S. Government securities
as  income  that  is  exempt  from  state  and  local  income  taxes.  Dividends
attributable to repurchase agreement earnings are, as a general rule, subject to
state and local taxation.
 
     It is anticipated that the Money Market Fund's portfolio will be managed so
as  to avoid application  of foreign withholding  taxes. To the  extent the Fund
invests in foreign securities, it may be subject to foreign withholding taxes on
income earned on these securities and may be
 
                                       22
 
<PAGE>
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unable to pass through  to its shareholders foreign  tax credits and  deductions
with respect to these taxes.
 
     Statements  as  to  the  tax status  of  each  shareholder's  dividends and
distributions are mailed  annually. These statements,  among other things,  tell
shareholders  of the portions  of their dividends that  are attributable to U.S.
Treasury securities  and  specific types  of  U.S. Government  securities.  Each
shareholder  also receives,  if appropriate,  various written  notices after the
close of the Fund's prior  tax year as to the  federal income tax status of  the
shareholder's  dividends  and distributions  that  were received  from  the Fund
during the Fund's prior taxable year. Shareholders should consult their own  tax
advisors to assess the consequences of investing in a Fund under state and local
laws  generally and to determine whether dividends paid by a Fund that represent
interest derived from  U.S. Treasury  and other U.S.  Government securities  are
exempt from any applicable state or local taxes.
 
                             DESCRIPTION OF SHARES
 
The  Trust was formed as a business trust  under the laws of the Commonwealth of
Massachusetts on  February 14,  1991. The  Declaration of  Trust authorizes  the
Board  of Trustees to create separate series of an unlimited number of shares of
beneficial interest, par value $.001 per share. The Declaration of Trust further
authorizes the Trustees to classify or reclassify any series of shares into  one
or  more classes.  The Trustees  have authorized  the issuance  of Institutional
shares and Financial Intermediary shares of each of the three Funds.
 
     When issued, shares are  fully paid and  non-assessable. Shares are  freely
transferable  and have no  pre-emptive, subscription or  conversion rights. Each
Institutional share and  Financial Intermediary  share of a  Fund represents  an
equal, proportionate interest in the assets belonging to that Fund. Thus, in the
event  of liquidation, shareholders  are entitled to  share pro rata  in the net
assets of the applicable Fund available for distribution to shareholders. Except
as described  in this  Prospectus,  the two  classes  of shares  are  identical.
Certain aspects of the shares may be altered, upon notice to shareholders, if it
is deemed necessary in order to satisfy certain tax regulatory requirements.
 
     Holders  of  each Fund's  Institutional  shares and  Financial Intermediary
shares will vote in the aggregate and  not by class on all matters except  where
otherwise  required by  law and except  that only  Financial Intermediary shares
will be  entitled  to  vote on  matters  submitted  to a  vote  of  shareholders
pertaining  to the Trust's arrangements  with financial intermediaries. Further,
shareholders of the Trust will vote in  the aggregate and not by Fund except  as
otherwise  required by  law or  when the Board  of Trustees  determines that the
matter to be  voted upon affects  only the  interests of the  shareholders of  a
particular  Fund. Shareholders of  the Trust are  entitled to one  vote for each
full share held and fractional votes for fractional shares held, irrespective of
class or Fund. Voting rights are not cumulative and, accordingly, the holders of
more than  50% of  the  aggregate shares  of  the Trust  may  elect all  of  the
Trustees.  The  Trust  does  not intend  to  hold  annual  shareholder meetings,
although special  meetings  may be  called  for  purposes such  as  electing  or
removing  Trustees  or such  other purposes  as  are described  above. Financial
intermediaries holding shares for their own accounts have undertaken to vote the
shares in the same proportions as the vote of shares held for their customers.
 
                                       23



<PAGE>
   No person has been authorized to give any information or to make any
   representation not contained in this Prospectus or in the Trust's
   Statement of Additional Information incorporated herein by reference
   in connection with the offering made by this Prospectus and, if
   given or made, such information or representations must not be
   relied upon as having been authorized by the Trust or its
   distributor in any jurisdiction in which such offering may not
   lawfully be made.
 
<TABLE>
<S>                                            <C>
--------------------------------------------------------
Table of Contents
--------------------------------------------------------
Fee Table                                              2
--------------------------------------------------------
Highlights                                             4
--------------------------------------------------------
Financial Highlights                                   8
--------------------------------------------------------
Yield                                                 10
--------------------------------------------------------
Investment Objective and Policies                     11
--------------------------------------------------------
Purchase and Redemption of Shares                     17
--------------------------------------------------------
Management of the Trust                               19
--------------------------------------------------------
Dividends, Distributions and Taxes                    22
--------------------------------------------------------
Description of Shares                                 23
--------------------------------------------------------
</TABLE>
                                      Liquid
                               Institutional
                                    Reserves
 
   Prospectus
 
   September 1, 1995
 
                           Money Market Fund
                Government  Securities  Fund
                    Treasury Securities Fund
 
Institutional Shares
Financial Intermediary Shares



<PAGE>
Statement of Additional Information                            September 1, 1995
 
--------------------------------------------------------------------------------
                         Liquid Institutional Reserves
                               Money Market Fund
                           Government Securities Fund
                            Treasury Securities Fund
     1285 AVENUE OF THE AMERICAS  NEW YORK, NEW YORK 10019  (800) 647-1568
Liquid  Institutional Reserves (the  'Trust') is a  no-load, open-end investment
company offering shares in three separate, diversified, money market funds  (the
'Funds').  Each Fund seeks high current income to the extent consistent with the
preservation of capital and the maintenance of liquidity through investments  in
high quality, short term, U.S. dollar denominated money market instruments.
 
--------------------------------------------------------------------------------
 
The  Trust's  Prospectus dated  the same  date as  this Statement  of Additional
Information, which provides the basic  information investors should know  before
investing, may be obtained without charge by calling the telephone number listed
above.  This Statement of Additional Information,  which is not a Prospectus, is
intended  to  provide  additional  information  regarding  the  activities   and
operations  of the Trust and should be  read in conjunction with the Prospectus.
Capitalized  terms  not  otherwise  defined  in  this  Statement  of  Additional
Information have the meanings accorded to them in the Prospectus.


<PAGE>
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                       INVESTMENT OBJECTIVE AND POLICIES
 
The following discussion elaborates on the description of each Fund's investment
policies and practices contained in the Prospectus.
 
CUSTODIAL RECEIPTS
 
The  Money Market Fund may acquire custodial receipts that evidence ownership of
future interest payments, principal payments or both on certain U.S.  Government
notes or bonds. These notes and bonds are held in custody by a bank on behalf of
the  owners.  These custodial  receipts are  known  by various  names, including
'Treasury  Receipts,'  'Treasury  Investors  Growth  Receipts'  ('TIGRs'),   and
'Certificates  of Accrual  on Treasury Securities'  ('CATS'). Although custodial
receipts are not considered  U.S. Government securities by  the Trust, they  are
indirectly  issued  or  guaranteed as  to  principal  and interest  by  the U.S.
Government, its agencies, authorities or instrumentalities.
 
CORPORATE AND BANK OBLIGATIONS
 
Commercial paper represents  short term,  unsecured promissory  notes issued  in
bearer  form  by  banks  or bank  holding  companies,  corporations  and finance
companies. The commercial paper purchased by  the Money Market Fund consists  of
direct U.S. dollar denominated obligations of domestic or foreign issuers.
 
     Bank  obligations  in  which  the  Money  Market  Fund  may  invest include
certificates  of  deposit,  bankers'   acceptances  and  fixed  time   deposits.
Certificates  of  deposit  are  negotiable  certificates  issued  against  funds
deposited in a  commercial bank  for a  definite period  of time  and earning  a
specified  return.  Bankers'  acceptances  are  negotiable  drafts  or  bills of
exchange, normally  drawn  by  an  importer or  exporter  to  pay  for  specific
merchandise,  that are 'accepted' by  a bank, meaning, in  effect, that the bank
unconditionally agrees to  pay the  face value  of the  instrument on  maturity.
Fixed  time deposits are bank obligations payable  at a stated maturity date and
bearing interest at a fixed rate. Fixed time deposits may be withdrawn on demand
by the  investor but  may be  subject to  early withdrawal  penalties that  vary
depending  upon market conditions and the  remaining maturity of the obligation.
There are no  contractual restrictions  on the  right to  transfer a  beneficial
interest  in a fixed time deposit to a  third party, although there is no market
for these deposits.
 
REPURCHASE AGREEMENTS
 
The Money  Market  Fund  may  enter into  repurchase  agreements  with  selected
broker-dealers, banks or other financial institutions. A repurchase agreement is
an  arrangement  under which  the purchaser  (i.e., the  Fund) purchases  a U.S.
Government or other high quality  short term debt obligation (the  'Obligation')
and  the seller agrees, at  the time of sale, to  repurchase the Obligation at a
specified time and price.  Custody of the Obligation  will be maintained by  the
Trust's  custodian. The repurchase price may  be higher than the purchase price,
the difference being income to the  Fund, or the purchase and repurchase  prices
may  be the same, with interest  at a stated rate due  to the Fund together with
the repurchase price on repurchase.  In either case, the  income to the Fund  is
unrelated  to  the interest  rate on  the Obligation  subject to  the repurchase
agreement.
 
     For purposes of the Investment Company Act of 1940, as amended (the 'Act'),
a repurchase agreement is deemed to be a loan from the Fund to the seller of the
Obligation. It  is not  clear  whether a  court  would consider  the  Obligation
purchased by the Fund subject to a repurchase
 
                                       2
 
<PAGE>
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agreement  as being owned by the  Fund or as being collateral  for a loan by the
Fund to the  seller. In the  event of commencement  of bankruptcy or  insolvency
proceedings  with respect to  the seller of the  Obligation before repurchase of
the Obligation under a  repurchase agreement, the Fund  may encounter delay  and
incur  costs before being able to sell  the Obligation. This delay may involve a
loss of  interest or  a decline  in  the price  of the  Obligation. If  a  court
characterizes  the  transaction as  a  loan and  the  Fund has  not  perfected a
security interest in  the Obligation,  the Fund may  be required  to return  the
Obligation to the seller's estate and be treated as an unsecured creditor of the
seller.  As an unsecured creditor,  the Fund would be at  risk of losing some or
all of  the principal  and interest  involved in  the transaction.  As with  any
unsecured  debt  instrument  purchased  for  the  Fund,  the  Trust's investment
sub-adviser, Mitchell  Hutchins  Asset Management  Inc.  ('Mitchell  Hutchins'),
seeks  to minimize the risk of loss  from repurchase agreements by analyzing the
creditworthiness of the obligor, in this case, the seller of the Obligation. The
Board of Trustees has reviewed and approved certain sellers that it believes  to
be  creditworthy and has authorized the Fund to enter into repurchase agreements
exclusively with these sellers.
 
     Apart from the risk of bankruptcy or insolvency proceedings, there is  also
the  risk that the seller  may fail to repurchase  the security. However, if the
market value of the Obligation subject to the repurchase agreement becomes  less
than  the repurchase price  (including accrued interest),  the Trust will direct
the seller of the Obligation to deliver additional securities so that the market
value of all securities  subject to the repurchase  agreement equals or  exceeds
the repurchase price.
 
     Certain  repurchase  agreements that  provide for  settlement in  more than
seven days can be liquidated  before the nominal fixed  term on notice of  seven
days   or  less.  These  repurchase  agreements   will  be  regarded  as  liquid
instruments.
 
FOREIGN SECURITIES
 
The Money Market Fund  may invest in foreign  securities and in certificates  of
deposit,  bankers' acceptances,  and fixed  time deposits  and other obligations
issued by  major foreign  banks,  foreign branches  of  U.S. banks  and  foreign
branches  of  foreign banks.  Under current  Securities and  Exchange Commission
('SEC') rules relating  to the  use of the  amortized cost  method of  portfolio
securities  valuation, the  Money Market Fund  is restricted  to purchasing U.S.
dollar denominated securities  but is  not otherwise  precluded from  purchasing
securities  of  foreign  issuers.  Investments in  foreign  securities  and bank
obligations may involve  considerations different from  investments in  domestic
securities, which are described in the Prospectus.
 
ASSET-BACKED AND RECEIVABLE-BACKED SECURITIES
 
The   Money  Market  Fund  may  invest  in  asset-backed  and  receivable-backed
securities. Several types of asset-backed and receivable-backed securities  have
been  offered to investors, including  'Certificates for Automobile Receivables'
('CARssm') and interests in pools  of credit card receivables. CARssm  represent
undivided fractional interests in a trust, the assets of which consist of a pool
of  motor vehicle retail  installment sales contracts  and security interests in
the vehicles  securing the  contracts.  Payments of  principal and  interest  on
CARssm  are passed through monthly to  certificate holders and are guaranteed up
to certain amounts and for a certain time period by a letter of credit issued by
a financial  institution unaffiliated  with  the trustee  or originator  of  the
trust.  An investor's return  on CARssm may  be affected by  early prepayment of
principal on the underlying vehicle sales contracts. If the letter of credit  is
exhausted, the trust may be prevented
 
                                       3
 
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from  realizing the  full amount due  on a  sales contract because  of state law
requirements and restrictions relating to foreclosure sales of vehicles and  the
availability   of  deficiency   judgments  following  such   sales,  because  of
depreciation, damage or loss of a vehicle, because of the application of federal
and state  bankruptcy  and  insolvency  laws or  other  factors.  As  a  result,
certificate  holders may experience delays in payment if the letter of credit is
exhausted. Consistent with  the Fund's  investment objective  and policies  and,
subject  to the review and  approval of the Trust's  Board of Trustees, the Fund
also may invest in other types of asset-backed and receivable-backed securities.
 
FORWARD COMMITMENTS AND WHEN-ISSUED SECURITIES
 
Each Fund may  purchase securities on  a when-issued basis  or purchase or  sell
securities   on  a  forward  commitment  basis.  These  transactions  involve  a
commitment by the  Fund to purchase  or sell  securities at a  future date.  The
price of the underlying securities, usually expressed in terms of yield, and the
date  when the securities will  be delivered and paid  for (i.e., the settlement
date) are fixed at the time the transaction is negotiated. When-issued purchases
and forward commitment transactions are negotiated directly with the other party
and these commitments are not traded on securities exchanges.
 
     A Fund  generally  will  purchase  securities on  a  when-issued  basis  or
purchase  or  sell on  a forward  commitment  basis only  with the  intention of
completing the transaction and actually purchasing or selling the securities. If
deemed advisable  as a  matter of  investment strategy,  however, the  Fund  may
dispose  of or negotiate a commitment after  entering into it. The Fund also may
sell securities  it  has  committed  to purchase  before  those  securities  are
delivered  to the Fund  on the settlement  date. The Fund  may realize a capital
gain or loss in connection with these transactions. For purposes of  determining
the  Fund's average  dollar weighted  maturity, the  maturity of  when-issued or
forward commitment securities will be calculated from the commitment date.
 
     When a Fund  purchases securities  on a when-issued  or forward  commitment
basis,  the Trust's custodian  will maintain in  a segregated account securities
having a value, determined  daily, at least  equal to the  amount of the  Fund's
purchase  commitments. In  the case  of a  forward commitment  to sell portfolio
securities, the custodian  will hold  the portfolio securities  in a  segregated
account  while the commitment  is outstanding. These  procedures are designed to
ensure that the Fund will maintain sufficient  assets at all times to cover  its
obligations under when-issued purchases and forward commitments.
 
LENDING OF PORTFOLIO SECURITIES
 
The  Money Market  Fund may  seek to  increase its  income by  lending portfolio
securities. Under  present  regulatory policies,  these  loans may  be  made  to
institutions,  such  as  broker-dealers, and  would  be required  to  be secured
continuously by  collateral  in cash,  cash  equivalents or  high  quality  U.S.
Government  securities maintained on a current basis at an amount at least equal
to the market value of the securities  loaned. The Fund would have the right  to
call a loan and obtain the securities loaned at any time on five days' notice.
 
     For  the  duration  of a  loan,  the  Fund would  continue  to  receive the
equivalent of the  interest or dividends  paid by the  issuer on the  securities
loaned and also would receive the income from
 
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investment  of the  collateral. The Fund  would not  have the right  to vote any
securities having voting rights during the  existence of the loan, but the  Fund
could  call the  loan in  anticipation of  an important  vote to  be taken among
holders of the securities or of the giving or withholding of their consent on  a
material matter affecting the investment.
 
     As with other extensions of credit, there are risks of delay in recovering,
or  even loss of rights in, the collateral should the borrower of the securities
fail financially. The  loans, however,  would be made  only to  firms deemed  by
Mitchell  Hutchins to be of good standing, and when, in the judgment of Mitchell
Hutchins, the income that can be earned currently from securities loans of  this
type  justifies the  attendant risks.  If Mitchell  Hutchins determines  to make
securities loans, it is intended that  the value of the securities loaned  would
not exceed 30% of the value of the total assets of the Fund.
 
PARTICIPATION INTERESTS
 
   
The  Money  Market  Fund  may purchase  participation  interests  in  loans with
remaining maturities of 397 days or less. These loans must be made to issuers in
whose obligations the Fund may invest.  Any participation purchased by the  Fund
must  be  issued by  a  bank in  the United  States  with assets  exceeding $1.5
billion. Because the issuing bank does  not guarantee the participations in  any
way,  they  are  subject  to  the credit  risks  generally  associated  with the
underlying corporate borrower. In  addition, because it  may be necessary  under
the  terms of the loan participation for  the Fund to assert through the issuing
bank such rights as may exist against the underlying corporate borrower, in  the
event the underlying corporate borrower fails to pay principal and interest when
due, the Fund may be subject to delays, expenses and risks that are greater than
those  that  would  have  been  involved if  the  Fund  had  purchased  a direct
obligation, such as commercial paper, of the borrower. Moreover, under the terms
of the loan participation, the Fund may be regarded as a creditor of the issuing
bank, rather than  of the underlying  corporate borrower, so  that the Fund  may
also be subject to the risk that the issuing bank may become insolvent. Further,
in the event of the bankruptcy or insolvency of the corporate borrower, the loan
participation  may be subject  to certain defenses  that can be  asserted by the
borrower as a  result of  improper conduct by  the issuing  bank. The  secondary
market,  if any, for these loan  participations is limited and any participation
interest may be regarded as illiquid.
    
 
     In the event that Mitchell Hutchins does not believe that price  quotations
currently  obtainable  from  banks, dealers,  or  pricing  services consistently
represent the market values of participation interests, Mitchell Hutchins  will,
following   guidelines  established  by   the  Board  of   Trustees,  value  the
participation interests  held by  the  Fund at  fair value,  which  approximates
market  value.  In  valuing  a participation  interest,  Mitchell  Hutchins will
consider the following  factors, among  others: (i) the  characteristics of  the
participation  interest, including the  cost, size, interest  rate, period until
next interest rate reset,  maturity and base lending  rate of the  participation
interest,  the terms and conditions  of the loan and  any related agreements and
the position of  the loan  in the borrower's  debt structure;  (ii) the  nature,
adequacy and value of the collateral, including the Trust's rights, remedies and
interests  with respect  to the  collateral; (iii)  the creditworthiness  of the
borrower based on an evaluation of its financial condition, financial statements
and information about the borrower's business, cash flows, capital structure and
future prospects;  (iv) the  market for  the participation  interest,  including
price  quotations  for and  trading in  the  participation interest  and similar
participation interests or instruments and  the market environment and  investor
 
                                       5
 
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attitudes   toward  the   participation  interest   or  participation  interests
generally;  (v)   the  quality   and   creditworthiness  of   any   intermediary
participants; and (vi) general economic or market conditions.
 
RESTRICTED AND ILLIQUID SECURITIES
 
Each Fund may not invest more than 10% of its net assets in illiquid securities,
including  repurchase agreements that have an  effective maturity of longer than
seven days  and securities  that are  illiquid by  virtue of  the absence  of  a
readily  available  market  or  legal  or  contractual  restrictions  on resale.
Securities that have  legal or  contractual restrictions  on resale  but have  a
readily  available  market  are not  considered  illiquid for  purposes  of this
limitation. Repurchase  agreements  subject  to  demand are  deemed  to  have  a
maturity equal to the notice period.
 
     Historically,  illiquid  securities  have  included  securities  subject to
contractual  or  legal  restrictions  on  resale  because  they  have  not  been
registered  under the Securities Act of 1933, as amended (the 'Securities Act'),
securities that are otherwise not  readily marketable and repurchase  agreements
having  a maturity  of longer  than seven  days. Securities  that have  not been
registered under the Securities Act often are referred to as private  placements
or  restricted securities and are  purchased directly from the  issuer or in the
secondary market. Mutual  funds do not  typically hold a  significant amount  of
these  restricted  or other  illiquid securities  because  of the  potential for
delays in resale and uncertainty in valuation. Limitations on resale may have an
adverse effect on the  marketability of portfolio securities  and a mutual  fund
might  be unable to dispose of  restricted or other illiquid securities promptly
or at  reasonable  prices and  might  thereby experience  difficulty  satisfying
redemptions  within  seven  days. A  mutual  fund  also might  have  to register
restricted securities  in  order to  dispose  of them  resulting  in  additional
expense  and delay. Adverse market conditions  could impede a public offering of
securities.
 
     In recent years, however,  a large institutional  market has developed  for
certain  securities that are not registered  under the Securities Act, including
repurchase  agreements,   commercial   paper,  foreign   securities,   municipal
securities  and corporate bonds and notes.  Institutional investors depend on an
efficient institutional market in which the unregistered security can be  resold
readily or on an issuer's ability to honor a demand for repayment. The existence
of  contractual or  legal restrictions  on resale  to the  general public  or to
certain institutions may not be indicative of the liquidity of the investments.
 
     The SEC has adopted Rule 144A under the Securities Act, which allows for  a
broader  institutional  trading  market  for  securities  otherwise  subject  to
restriction on  resale to  the general  public. Rule  144A establishes  a  'safe
harbor'  from the registration requirements of the Securities Act for resales of
certain  securities  to  qualified   institutional  buyers.  Mitchell   Hutchins
anticipates   that  the  market  for  certain  restricted  securities,  such  as
institutional commercial paper,  will expand  further as  a result  of this  new
regulation  and the development of automated  systems for the trading, clearance
and settlement of unregistered securities of domestic and foreign issuers,  such
as  the  PORTAL  System  sponsored by  the  National  Association  of Securities
Dealers, Inc.
 
     Mitchell Hutchins will monitor the liquidity of restricted securities under
the supervision  of the  Board  of Trustees.  In reaching  liquidity  decisions,
Mitchell  Hutchins will  consider, inter  alia, the  following factors:  (i) the
frequency of trades  and quotes  for the security;  (ii) the  number of  dealers
wishing  to purchase  or sell  the security  and the  number of  other potential
purchasers; (iii) dealer undertakings to make a market in the security; and (iv)
the nature of the security and of the
 
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marketplace trades (e.g., the time needed to dispose of the security, the method
of soliciting offers and the mechanics of the transfer).
 
INVESTMENT RESTRICTIONS
 
The following restrictions may not be  changed with respect to any Fund  without
the  approval  of the  majority  of outstanding  voting  securities of  the Fund
(which, under the Act and the rules thereunder and as used in the Prospectus and
this Statement of  Additional Information, means  the lesser of  (i) 67% of  the
shares  of the Fund present at a meeting if  the holders of more than 50% of the
outstanding shares of the Fund  are present in person or  by proxy or (ii)  more
than  50% of the  outstanding shares of the  Fund). Investment restrictions that
involve a maximum percentage of securities or assets shall not be considered  to
be violated unless an excess over the percentage occurs immediately after and is
caused  by  an  acquisition  or  encumbrance  of  securities  or  assets  of, or
borrowings by  or  on  behalf of,  a  Fund,  with the  exception  of  borrowings
permitted by Investment Restriction (4). In applying the following restrictions,
the  Trust will not treat  a guarantee as a security  issued by the guarantor if
the value of all securities issued or guaranteed by the guarantor and owned by a
Fund does not exceed 10% of the Fund's total assets.
 
     The Trust may not, on behalf of any Fund:
 
          (1) Purchase for the Fund the securities of any one issuer, other than
     U.S. Government securities, if immediately after the purchase more than  5%
     of  the value of the  Fund's total assets would  be invested in the issuer,
     except that (a) up to 25% of the value of its total assets may be  invested
     without  regard to this 5% limitation and  (b) this 5% limitation shall not
     apply  to   repurchase  agreements   collateralized  by   U.S.   Government
     securities.
 
          (2)  Purchase securities if the purchase  would cause more than 25% in
     the aggregate of the  market value of  the total assets of  the Fund to  be
     invested  in the securities  of one or more  issuers having their principal
     business  activity  in  the  same  industry,  provided  that  there  is  no
     limitation  with respect to, and each Fund reserves freedom of action, when
     otherwise consistent  with  its  investment policies,  to  concentrate  its
     investments   in  U.S.  Government   securities,  obligations  (other  than
     commercial paper)  issued  or  guaranteed  by  U.S.  banks  and  repurchase
     agreements   and  securities   loans  collateralized   by  U.S.  Government
     securities or such bank obligations.
 
          (3) Make loans, except through (a) the purchase of debt obligations in
     accordance  with  the  Fund's   investment  objective  and  policies,   (b)
     repurchase  agreements  with banks,  brokers,  dealers and  other financial
     institutions and (c) loans of securities.
 
          (4) Borrow money, except as a temporary or emergency measure, and then
     only from banks  in amounts  not exceeding one-third  of the  value of  the
     Fund's  total assets. No purchases of securities will be made if borrowings
     exceed 5% of the value of the Fund's assets.
 
          (5) Mortgage,  pledge  or  hypothecate any  assets  except  to  secure
     permitted borrowings.
 
          (6)  Purchase real estate (excluding securities secured by real estate
     or interests therein), securities issued  by real estate investment  trusts
     or  limited partnerships, commodities,  commodity contracts or  oil, gas or
     other mineral leases or exploration or development programs.
 
          (7) Invest  in companies  for  the purpose  of exercising  control  of
     management.
 
                                       7
 
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          (8)  Act as an underwriter  of securities (except as  the Trust may be
     deemed to be an underwriter under the Securities Act in connection with the
     purchase and sale of  portfolio instruments in  accordance with the  Fund's
     investment  objective  and  management  policies),  purchase  securities on
     margin (except for  delayed delivery  or when-issued  transactions or  such
     short  term credits  as are necessary  for the  clearance of transactions),
     make short sales of securities, maintain  a short position or invest in  or
     write  puts, calls, or combinations thereof  (except that the Trust may, on
     behalf of a Fund, acquire puts in connection with the acquisition of a debt
     instrument).
 
          (9) Purchase the securities of any issuer, other than U.S.  Government
     securities,  if  the  purchase would  cause  more  than 10%  of  the voting
     securities of the issuer to be held by  the Fund, except that up to 25%  of
     the value of the Fund's total assets may be invested without regard to this
     10% limitation.
 
          (10) Purchase warrants.
 
     Notwithstanding  restriction (1) above, to the extent required by the rules
of the SEC, the Money Market Fund will not invest more than 5% of its assets  in
the obligations of any one issuer.
 
PORTFOLIO TRANSACTIONS
 
Subject  to the general control  of the Board of  Trustees, Mitchell Hutchins is
responsible for, makes  decisions with respect  to, and places  orders for,  all
purchases  and sales  of portfolio securities  for each  Fund. Mitchell Hutchins
purchases portfolio securities for the Fund  either directly from the issuer  or
from  dealers that specialize  in money market  instruments. These purchases are
usually without  the  payment  of brokerage  commissions.  In  making  portfolio
investments,  Mitchell Hutchins seeks to obtain the  best net price and the most
favorable execution  of orders.  To  the extent  that  the execution  and  price
offered  by more than one  dealer are comparable, Mitchell  Hutchins may, in its
discretion, effect  transactions  in  portfolio  securities  with  dealers  that
provide the Trust with research advice or other services.
 
     Mitchell  Hutchins  may  seek  to obtain  an  undertaking  from  issuers of
commercial paper or dealers selling commercial paper to consider the  repurchase
of  the securities from the  Money Market Fund prior  to their maturity at their
original cost plus interest,  interest sometimes being  adjusted to reflect  the
actual maturity of the securities, if Mitchell Hutchins believes that the Fund's
anticipated need for liquidity makes this action desirable. Certain dealers, but
not  issuers,  have charged  and may  in the  future charge  a higher  price for
commercial paper  where they  undertake  to repurchase  prior to  maturity.  The
payment  of a higher price  in order to obtain  this kind of undertaking reduces
the yield that might otherwise be received by the Fund on the commercial  paper.
Mitchell Hutchins is authorized to pay a higher price for commercial paper where
it secures such an undertaking if Mitchell Hutchins believes that the prepayment
privilege  is desirable to  assure the Fund's liquidity  and such an undertaking
cannot otherwise be obtained.
 
     Investment decisions for the  Funds are made  independently from those  for
other  investment companies and accounts advised by Mitchell Hutchins, which may
invest in the same securities as the Funds. When purchases or sales of the  same
security  are  made at  substantially the  same  time on  behalf of  those other
investment companies and  accounts, transactions  are averaged as  to price  and
available  investments  are allocated  as to  amount in  a manner  that Mitchell
Hutchins believes to  be equitable  to each  company or  account, including  the
Funds. In some instances, this investment
 
                                       8
 
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procedure  may adversely affect the price paid or received by a Fund or the size
of the position obtained for  a Fund. To the  extent permitted by law,  Mitchell
Hutchins  may aggregate the securities  to be sold or  purchased for a Fund with
those to be sold or purchased for those other companies or accounts in order  to
obtain best execution.
 
     The  Fund will not engage in principal transactions with, acquire portfolio
securities issued by or enter into repurchase agreements with, Mitchell Hutchins
or any affiliated person thereof,  as defined in the  Act, except to the  extent
permitted by the SEC.
 
     The  Trust does not intend to  seek profits through short-term trading. The
Funds' annual  portfolio  turnover  will  be relatively  high,  but  the  Funds'
portfolio  turnover  is not  expected to  have  a material  effect on  their net
income. Each  Fund's  portfolio  turnover  rate  is  expected  to  be  zero  for
regulatory reporting purposes.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE AND REDEMPTION
 
Information  on  how to  purchase  and redeem  Fund  shares is  included  in the
Prospectus.
 
     Under the Act, the  Trust may suspend the  right of redemption or  postpone
the  date of payment  upon redemption for  any period during  which the New York
Stock Exchange is  closed, other  than customary weekend  and holiday  closings,
during  which  trading  on  that  exchange is  restricted  or  during  which (as
determined by the SEC by rule or regulation) an emergency exists as a result  of
which   disposal  or  valuation  of   portfolio  securities  is  not  reasonably
practicable or for such other periods as the SEC may permit. The Trust may  also
suspend  or postpone  the recordation  of the  transfer of  its shares  upon the
occurrence of any of the foregoing conditions. In addition, the Trust may redeem
shares involuntarily  in  certain  other  instances if  the  Board  of  Trustees
determines  that failure to redeem may have material adverse consequences to the
Trust's shareholders in general. The Trust is obligated to redeem shares  solely
in cash up to $250,000 or 1% of a Fund's net asset value, whichever is less, for
any  one shareholder within  a 90-day period. Any  redemption beyond this amount
also will be  in cash unless  the Board of  Trustees determines that  conditions
exist  that  make  payment  of  redemption proceeds  wholly  in  cash  unwise or
undesirable. In such  a case, the  Trust may  make payment wholly  or partly  in
securities or other property (known as 'redemption in kind'), valued in the same
way  as the Trust determines net asset value. See 'Net Asset Value' below for an
example of  when such  a redemption  or form  of payment  might be  appropriate.
Redemption  in kind  is not  as liquid  as a  cash redemption.  Shareholders who
receive a  redemption in  kind may  incur  transaction costs  if they  sell  the
securities  or property and  may receive less  than the redemption  value of the
securities or property  upon sale,  particularly where the  securities are  sold
prior to maturity.
 
NET ASSET VALUE
 
Each  Fund's net asset value per share is calculated by dividing the total value
of the assets belonging to the Fund,  less the value of any liabilities  charged
to  the Fund, by  the total number  of Fund shares  outstanding (irrespective of
class). Assets belonging to the Fund consist of the consideration received  upon
the  issuance of  Fund shares  together with  all income,  earnings, profits and
proceeds derived from the  investment thereof, including  any proceeds from  the
sale  of investments,  any funds  or payments  derived from  any reinvestment of
those proceeds and a
 
                                       9
 
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portion of any general assets of the  Trust not belonging to a particular  Fund.
Assets belonging to the Fund are charged with the direct liabilities of the Fund
and  with a share of  the general liabilities of the  Trust allocated on a daily
basis in proportion to the relative net assets of the Funds. Determinations made
in good faith and in accordance with generally accepted accounting principles by
the Board of Trustees as to the  allocation of any assets or liabilities to  the
Fund are conclusive.
 
     In  computing the net asset  value of its shares  for purposes of sales and
redemptions, the Trust uses the amortized  cost method of valuation. Under  this
method, the Trust values each Fund's portfolio securities at cost on the date of
purchase  and thereafter  assumes a  constant proportionate  amortization of any
discount or premium until maturity of the security. As a result, the value of  a
portfolio security for purposes of determining net asset value normally does not
change  in  response to  fluctuating interest  rates.  While the  amortized cost
method provides certainty in portfolio valuation, it may result in valuations of
a Fund's portfolio securities that are higher or lower than the market value  of
the securities.
 
     In  connection with its  use of amortized cost  valuation, each Fund limits
the dollar weighted average maturity of its  portfolio to not more than 90  days
and  does not purchase any instrument with a remaining maturity of more than 397
days. The Board of Trustees also has established procedures, pursuant to a  rule
promulgated  by the SEC,  that are intended  to stabilize each  Fund's net asset
value per share for purposes of sales and redemptions at $1.00. These procedures
include the determination at  such intervals as the  Board deems appropriate  of
the  extent, if any, to which the Fund's net asset value per share calculated by
using available market quotations  deviates from $1.00 per  share. In the  event
this  deviation exceeds 1/2 of 1%, the Board will promptly consider what action,
if any,  should be  initiated. If  the Board  believes that  the amount  of  any
deviation  from the Fund's  $1.00 amortized cost  price per share  may result in
material dilution or other unfair results to investors or existing shareholders,
it will take such steps  as it considers appropriate  to eliminate or reduce  to
the  extent reasonably practicable  any dilution or  unfair results. These steps
may include redeeming  shares in  kind, selling portfolio  instruments prior  to
maturity  to realize capital  gains or losses  or to shorten  the Fund's average
portfolio maturity, reducing or withholding  dividends or utilizing a net  asset
value per share determined by using available market quotations.
 
                            MANAGEMENT OF THE TRUST
 
TRUSTEES AND OFFICERS
 
Trustees  and  officers of  the  Trust, together  with  information as  to their
principal business occupations during the last five years, are shown below. Each
Trustee who is an 'interested  person' of the Trust, as  defined in the Act,  is
indicated by an asterisk.
 
     David  J. Beaubien, 60, Trustee.  Chairman of Yankee Environmental Systems,
Inc., manufacturer  of meteorological  measuring instruments.  Director of  IEC,
Inc.,   manufacturer  of  electronic   assemblies,  Belfort  Instruments,  Inc.,
manufacturer of  environmental instruments,  and  Oriel Corp.,  manufacturer  of
optical instruments. Prior to January 1991, Senior Vice President of EG&G, Inc.,
a  company  that makes  and  provides a  variety  of scientific  and technically
oriented products and  services. Mr.  Beaubien is a  director or  trustee of  13
other   investment  companies   for  which  Mitchell   Hutchins  or  PaineWebber
Incorporated ('PaineWebber') serves as investment adviser.
 
                                       10
 
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     William W.  Hewitt,  Jr.,  66,  Trustee.  Trustee  of  The  Guardian  Asset
Allocation  Fund, The Guardian Baillie  Gifford International Fund, The Guardian
Bond Fund, Inc., The Guardian Cash Fund, Inc., The Guardian Park Ave. Fund,  The
Guardian  Stock Fund, Inc., The Guardian  Cash Management Trust and The Guardian
U.S. Government  Trust.  Mr.  Hewitt  is  a director  or  trustee  of  13  other
investment  companies  for  which  Mitchell Hutchins  or  PaineWebber  serves as
investment adviser.
 
     Thomas R. Jordan, 66, Trustee. Principal of The Dilenschneider Group, Inc.,
a corporate communications and public  policy counseling firm. Prior to  January
1992,  Senior Vice President of  Hill & Knowlton, a  public relations and public
affairs firm. Prior to April 1991,  President of The Jordan Group, a  management
consulting  and strategies development firm. Mr. Jordan is a director or trustee
of 12  other investment  companies for  which Mitchell  Hutchins or  PaineWebber
serves as investment adviser.
 
     *Frank P.L. Minard, 49, Trustee. Chairman of Mitchell Hutchins, chairman of
the  board of Mitchell  Hutchins Institutional Investors Inc.  and a director of
PaineWebber. Prior to 1993, managing director of Oppenheimer Capital in New York
and Director of Oppenheimer Capital Ltd. in London. Mr. Minard is a director  or
trustee  of  27  other  investment  companies  for  which  Mitchell  Hutchins or
PaineWebber serves as investment adviser.
 
     Carl W.  Schafer, 59,  Trustee.  President of  the Atlantic  Foundation,  a
charitable  foundation supporting mainly oceanographic exploration and research.
Director of International Agritech  Resources, Inc., an agribusiness  investment
and consulting firm, Ardic Exploration and Development Ltd. and Hidden Lake Gold
Mines  Ltd., gold mining companies, Electronic Clearing House, Inc., a financial
transactions processing  company,  Wainoco  Oil  Corporation  and  BioTechniques
Laboratories,  Inc.,  an agricultural  biotechnology  company. Prior  to January
1993, chairman of the Investment Advisory Committee of the Howard Hughes Medical
Institute and director of Ecova Corporation,  a toxic waste treatment firm.  Mr.
Schafer  is a  director or  trustee of 12  other investment  companies for which
Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     Margo N. Alexander, 48, President. President, chief executive officer and a
director of  Mitchell  Hutchins.  Prior  to  January  1995,  an  executive  vice
president  of  PaineWebber.  Ms.  Alexander  is  also  a  trustee  of  one other
investment company  and president  of 38  other investment  companies for  which
Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     Teresa   M.   Boyle,  36,   Vice  President.   First  vice   president  and
manager -- advisory administration of Mitchell Hutchins. Prior to November 1993,
compliance manager of Hyperion Capital Management, Inc., an investment  advisory
firm.  Prior to April 1993, a vice president and manager -- legal administration
of Mitchell Hutchins. Ms. Boyle is also a vice president of 38 other  investment
companies  for  which  Mitchell  Hutchins or  PaineWebber  serves  as investment
adviser.
 
     Scott H. Griff, 29, Vice President and Assistant Secretary. Vice  president
and  attorney of Mitchell Hutchins.  Prior to January 1995,  an associate at the
law firm  of Cleary,  Gottlieb,  Steen &  Hamilton. Mr.  Griff  is also  a  vice
president  and assistant  secretary of 12  other investment  companies for which
Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     C. William Maher, 34, Vice President and Assistant Treasurer. Mr. Maher  is
a  first  vice  president and  the  senior  manager of  the  Fund Administration
Division of Mitchell Hutchins. Mr. Maher is
 
                                       11
 
<PAGE>
--------------------------------------------------------------------------------
also a vice president and assistant  treasurer of 38 other investment  companies
for which Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     Dennis L. McCauley, 48, Vice President. Mr. McCauley is a Managing Director
and  Chief Investment  Officer --  Fixed Income  of Mitchell  Hutchins. Prior to
December 1994,  Director of  Fixed Income  Investments of  IBM Corporation.  Mr.
McCauley  is also a vice  president of six other  investment companies for which
Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     Susan P. Messina, 35, Vice  President. Senior vice president and  portfolio
manager  for Mitchell Hutchins.  Ms. Messina is  also a vice  president of three
other investment companies for which Mitchell Hutchins or PaineWebber serves  as
investment adviser.
 
     Ann E. Moran, 38, Vice President and Assistant Treasurer. Vice president of
Mitchell Hutchins. Ms. Moran is also a vice president and assistant treasurer of
38  other investment companies for which Mitchell Hutchins or PaineWebber serves
as investment adviser.
 
     Dianne E. O'Donnell, 43, Vice President  and Secretary. Ms. O'Donnell is  a
senior  vice  president and  deputy general  counsel  of Mitchell  Hutchins. Ms.
O'Donnell is  also  a  vice  president and  secretary  of  38  other  investment
companies  for  which  Mitchell  Hutchins or  PaineWebber  serves  as investment
adviser.
 
     Victoria E.  Schonfeld, 44,  Vice President.  Ms. Schonfeld  is a  managing
director  and general counsel of Mitchell Hutchins. From April 1990 to May 1994,
partner in  the law  firm of  Arnold  & Porter.  Ms. Schonfeld  is also  a  vice
president  and assistant  secretary of 38  other investment  companies for which
Mitchell Hutchins or PaineWebber serves as investment adviser.

   
 
     Paul H. Schubert, 32,  Vice President and  Assistant Treasurer. First  vice
president  of  Mitchell  Hutchins.  From  August 1992  to  August  1994,  a vice
president at BlackRock Financial Management Inc. Prior to August 1992, an  audit
manager  with  Ernst &  Young LLP.  Mr. Schubert  is also  a vice  president and
assistant treasurer of 38 other investment companies for which Mitchell Hutchins
or PaineWebber serves as investment adviser.

     

   
    

     Julian F. Sluyters, 35 Vice President and Treasurer. Senior vice  president
and the director of the mutual fund finance division of Mitchell Hutchins. Prior
to  1991, he was an audit senior manager with Ernst & Young LLP. Mr. Sluyters is
also a vice president and treasurer  of 38 other investment companies for  which
Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     Gregory  K. Todd,  38, Vice President  and Assistant  Secretary. First vice
president and associate general counsel of  Mitchell Hutchins. Prior to 1993,  a
partner  with the law firm of Shereff,  Friedman, Hoffman & Goodman. Mr. Todd is
also a vice president and assistant  secretary of 38 other investment  companies
for which Mitchell Hutchins or PaineWebber serves as investment adviser.
 
     Certain  of the  Trustees and  officers of  the Trust  are directors and/or
trustees and officers of other mutual  funds managed by PaineWebber or  Mitchell
Hutchins.  The address of each of  the non-interested Trustees is: Mr. Beaubien,
Montague  Industrial  Park,  101  Industrial  Road,  Box  746,  Turners   Falls,
Massachusetts   01376;  Mr.  Hewitt,  P.O.   Box  2359,  Princeton,  New  Jersey
08543-2359; Mr.  Jordan, 200  Park Avenue,  New York,  New York  10166; and  Mr.
Schafer,  P.O. Box 1164, Princeton, New Jersey  08542. The address of Mr. Minard
and each of  the officers is  1285 Avenue of  the Americas, New  York, New  York
10019.
 
                                       12
 
<PAGE>
--------------------------------------------------------------------------------
 
     By  virtue  of  the  responsibilities  assumed  by  PaineWebber  under  the
Investment Advisory and  Administration Agreement (the  'Agreement'), the  Trust
requires  no executive employees  other than its officers,  none of whom devotes
full time to  the affairs  of the Trust.  See 'Investment  Management and  Other
Services  -- Investment Adviser and Administrator.'  Trustees and officers, as a
group, owned less than 1% of the Fund's outstanding shares as of August 1, 1995.
No officer, director or employee of  PaineWebber or Mitchell Hutchins or of  any
affiliate  receives any compensation from the Trust for serving as an officer or
Trustee of the Fund. The Trust pays each Trustee who is not an officer, director
or employee of  PaineWebber or  Mitchell Hutchins or  any of  its affiliates  an
annual  retainer of  $1,000 and  $375 for  each Trustees'  meeting attended, and
reimburses the Trustee for out-of-pocket expenses associated with attendance  at
Trustees'  meetings. The Chairman  of the Trustees'  audit committee receives an
annual fee of $250.  No officer, director or  employee of Mitchell Hutchins,  or
any  of its affiliates, receives any compensation  from the Trust for serving as
an officer or Trustee of the Trust. The amount of compensation paid by the Trust
to each Trustee  for the fiscal  year ended  April 30, 1995,  and the  aggregate
amount of compensation paid to each such Trustee for the year ended December 31,
1994  by all funds in the former Kidder Family of Funds for which such person is
a Board member were as follows:

   
 
<TABLE>
<CAPTION>
                                                                                                        (5)
                                                              (3)                                TOTAL COMPENSATION
                                        (2)                PENSION OR               (4)          FROM TRUST AND 12
             (1)                     AGGREGATE        RETIREMENT BENEFITS    ESTIMATED ANNUAL     OTHER INVESTMENT
        NAME OF BOARD            COMPENSATION FROM     ACCRUED AS PART OF      BENEFITS UPON      COMPANIES IN THE
            MEMBER                     TRUST            TRUST'S EXPENSES        RETIREMENT         FUND COMPLEX*
------------------------------   -----------------    --------------------   -----------------   ------------------
 
<S>                              <C>                  <C>                    <C>                 <C>
David J. Beaubien                     $ 2,500                 None                 None               $ 80,700
William W. Hewitt, Jr.                $ 2,500                 None                 None               $ 74,425
Thomas R. Jordan                      $ 2,500                 None                 None               $ 83,125
Frank P.L. Minard                        None                 None                 None                   None
Carl W. Schafer                       $ 2,750                 None                 None               $ 84,575
</TABLE>

     

------------
 
*  Represents total compensation paid to  each Trustee during the calendar  year
   ended December 31, 1994.
 
                     INVESTMENT ADVISORY AND OTHER SERVICES
 
INVESTMENT ADVISER AND ADMINISTRATOR
 
PaineWebber,  the  Funds'  investment adviser  and  administrator,  and Mitchell
Hutchins, the  Funds' sub-adviser  and sub-administrator,  are located  at  1285
Avenue of the Americas, New York, New York 10019.
 
     Subject  to the supervision and direction  of the Trust's Board of Trustees
and  of  PaineWebber,  Mitchell  Hutchins  manages  each  Fund's  portfolio   in
accordance  with  the  stated  policies of  the  Fund.  Mitchell  Hutchins makes
investment decisions for the  Fund and places the  purchase and sale orders  for
portfolio  transactions.  Mitchell  Hutchins  employs  a  professional  staff of
portfolio managers that draw upon a variety of sources for research  information
for  the Fund. In addition, Mitchell Hutchins  pays the salaries of all officers
and employees  who are  employed by  both  it and  the Trust,  maintains  office
facilities,   furnishes  statistical  and  research   data,  clerical  help  and
accounting, data processing, bookkeeping,  internal auditing and legal  services
and   certain  other  services  required  by  the  Trust,  prepares  reports  to
shareholders and filings with the SEC and state
 
                                       13
 
<PAGE>
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Blue Sky  authorities, and  generally  assists in  all  aspects of  the  Trust's
operations.  Mitchell  Hutchins  bears  all  expenses  in  connection  with  the
performance of its services.
 
     Expenses incurred in  the operation of  the Trust are  borne by the  Trust,
including but not limited to taxes, interest, brokerage fees and commissions, if
any,  fees  of  Trustees  who  are  not  officers,  directors  or  employees  of
PaineWebber or Mitchell Hutchins, SEC fees and related expenses, state Blue  Sky
qualification  fees,  charges  of  the  custodian  and  transfer,  dividend  and
recordkeeping agent,  charges  and expenses  of  any outside  service  used  for
pricing  of the  Funds' portfolio  securities and  calculating net  asset value,
certain insurance premiums,  outside auditing  and legal expenses  and costs  of
maintenance  of Trust existence, shareholder  services, printing of prospectuses
and  statements  of  additional  information  for  regulatory  purposes  or  for
distribution to shareholders, shareholders' reports and Trust meetings.
 
     The  Investment Advisory and Administration  Agreement remains in effect as
to each Fund from year  to year, provided its  continuance is approved at  least
annually  by (i) the  Board of Trustees  or (ii) the  vote of a  majority of the
outstanding voting securities of the Fund, provided further that in either event
the continuance is  also approved  by a  majority of  the Trustees  who are  not
'interested  persons,'  as defined  in  the Act,  of  the Trust,  PaineWebber or
Mitchell Hutchins, by vote cast in person at a meeting called for the purpose of
voting on this approval. With respect to each Fund, the Investment Advisory  and
Administration  Agreement was  approved by  shareholders in  accordance with the
terms of the Act on  April 13, 1995. With respect  to each Fund, the  Investment
Advisory and Administration Agreement is terminable without penalty, on 60 days'
written notice, by the Board of Trustees of the Trust, by vote of the holders of
a  majority of such Fund's outstanding voting securities, as defined in the Act,
or by PaineWebber.  The Investment  Advisory and  Administration Agreement  will
terminate  automatically,  as  to  the  relevant  Fund,  in  the  event  of  its
assignment, as defined in the Act and the rules thereunder.
 
   
     As compensation for PaineWebber's services rendered to the Trust, each Fund
pays a fee, computed daily and paid monthly,  at an annual rate of .25% of  such
Fund's  average daily  net assets.  For the fiscal  years ended  April 30, 1993,
April 30, 1994 and April 30, 1995, the Government Securities Fund incurred  fees
of  $342,099,  $283,281  and  $166,715, respectively,  to  Kidder  Peabody Asset
Management,  Inc.  ('KPAM'),  the  Fund's  predecessor  investment  adviser  and
administrator,   or  PaineWebber.   However,  during  these   periods,  KPAM  or
PaineWebber voluntarily waived a portion of its fees in the amounts of  $17,557,
$0  and $0, respectively,  and voluntarily paid expenses  of $8,081, $21,554 and
$81,678, respectively. For the fiscal years ended April 30, 1993, April 30, 1994
and April 30, 1995,  the Money Market Fund  incurred fees of $937,992,  $800,430
and  $595,984,  respectively,  to  KPAM or  PaineWebber.  However,  during these
periods, KPAM or  PaineWebber voluntarily waived  a portion of  its fees in  the
amounts  of $44,626, $0  and $0, respectively, and  voluntarily paid expenses of
$36,168, $3,470 and $45,499, respectively. For the fiscal years ended April  30,
1993,  April 30, 1994 and April 30,  1995, the Treasury Securities Fund incurred
fees of $25,578,  $47,804 and $57,716  to KPAM or  PaineWebber. However,  during
these periods, KPAM or PaineWebber voluntarily waived its fees in the amounts of
$1,638,  $40,467  and $6,926,  respectively,  and voluntarily  paid  expenses of
$76,822, $68,730 and $138,518, respectively. As of the date of this Statement of
Additional Information, PaineWebber is voluntarily waiving .05% of its fee  with
respect to each Fund.
    
 
     PaineWebber has agreed that if in any fiscal year the aggregate expenses of
a  Fund (including fees  pursuant to the  Investment Advisory and Administration
Agreement but excluding interest,
 
                                       14
 
<PAGE>
--------------------------------------------------------------------------------
taxes, brokerage and,  with the  prior written  consent of  the necessary  state
securities commissions, extraordinary expenses) exceed the expense limitation of
any  state having  jurisdiction over the  Trust, PaineWebber  will reimburse the
Trust for such excess expense. This expense reimbursement obligation is  limited
to  the  amount  of  PaineWebber's  fees.  Any  expense  reimbursement  will  be
estimated, reconciled and  paid on  a monthly  basis. The  most stringent  state
expense  limitation applicable to the  Trust currently requires reimbursement of
expenses in any year that expenses exceed 2 1/2% of the first $30 million of the
average daily value of a  Fund's net assets, 2% of  the next $70 million of  the
average daily value of the Fund's net assets and 1 1/2% of the remaining average
daily  value of the Fund's net assets.  During the fiscal period ended April 30,
1995, each Fund's expenses did not exceed such limitations.
 
     PaineWebber shall not be liable for any error of judgment or mistake of law
or for any loss suffered  by the Trust in connection  with the matters to  which
the  Investment Advisory and Administration Agreement relates, except for a loss
resulting from willful misfeasance, bad faith or gross negligence on its part in
the performance  of  its  duties  or  from  reckless  disregard  by  it  of  its
obligations   and  duties  under  the  Investment  Advisory  and  Administration
Agreement.
 
     Mitchell Hutchins personnel may invest in securities for their own accounts
pursuant to  a  code  of  ethics  that describes  the  fiduciary  duty  owed  to
shareholders  of  the  PaineWebber,  PaineWebber/Kidder,  Peabody  ('PW/KP') and
Mitchell Hutchins/Kidder,  Peabody ('MH/KP')  mutual  funds and  other  Mitchell
Hutchins'  advisory accounts by  all Mitchell Hutchins'  directors, officers and
employees, establishes procedures for  personal investing and restricts  certain
transactions.  For example,  employee accounts  generally must  be maintained at
PaineWebber, personal  trades  in  most  securities  require  pre-clearance  and
short-term  trading and participation in  initial public offerings generally are
prohibited. In addition, the code of  ethics puts restrictions on the timing  of
personal  investing in relation to trades by PaineWebber, PW/KP and MH/KP mutual
funds and other Mitchell Hutchins advisory clients.
 
DISTRIBUTOR
 
PaineWebber is the  distributor of the  Funds' shares  and is acting  on a  best
efforts basis.
 
CUSTODIAN AND TRANSFER, DIVIDEND AND RECORDKEEPING AGENT
 
State  Street Bank and Trust Company ('State Street'), One Heritage Drive, North
Quincy, Massachusetts 02171, has been retained to serve as custodian. PFPC Inc.,
a subsidiary of PNC Bank, National  Association, whose principal address is  400
Bellevue  Parkway, Wilmington,  Delaware 19809,  has been  retained as transfer,
dividend and recordkeeping agent. As  custodian, State Street maintains  custody
of  the Trust's portfolio securities. As transfer agent, PFPC Inc. maintains the
Trust's official record of  shareholders, as dividend  agent, it is  responsible
for  crediting dividends to shareholders'  accounts and, as recordkeeping agent,
it maintains certain accounting and financial records of the Trust.
 
INDEPENDENT AUDITORS
 
Ernst & Young LLP, 787 Seventh Avenue,  New York, New York 10019, will serve  as
independent  auditors for the  Trust. In that  capacity, Ernst &  Young LLP will
audit the Trust's annual financial statements.
 
                                       15
 
<PAGE>
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COUNSEL
 
Messrs. Willkie Farr & Gallagher, One Citicorp Center, 153 East 53rd Street, New
York, New York 10022, serve as counsel to the Trust.
 
FINANCIAL INTERMEDIARIES
 
   
The Trust will  enter into an  agreement with each  financial intermediary  that
purchases Financial Intermediary shares requiring it to provide support services
to   its  customers  who  beneficially  own  Financial  Intermediary  shares  in
consideration of the  Trust's payment of  .25% (on an  annualized basis) of  the
average  daily net asset value of the  Financial Intermediary shares held by the
financial intermediary for the benefit of its customers. These services include:
(i) aggregating and processing purchase  and redemption requests from  customers
and  placing net purchase and redemption orders with PaineWebber; (ii) providing
customers with a service that invests the assets of their accounts in  Financial
Intermediary shares; (iii) processing dividend payments from the Trust on behalf
of customers; (iv) providing information periodically to customers showing their
positions  in Financial Intermediary shares; (v)  arranging for bank wires; (vi)
responding to  customer inquiries  relating  to the  services performed  by  the
financial intermediary; (vii) providing sub-accounting with respect to Financial
Intermediary shares beneficially owned by customers or the information necessary
for  sub-accounting; (viii) forwarding shareholder communications from the Trust
(such as  proxies,  shareholder  reports  and  dividend,  distribution  and  tax
notices)  to customers, if required  by law; and (ix)  other similar services if
requested by the Trust. For the fiscal  period from March 17, 1994 (the date  on
which  Financial Intermediary shares  were first outstanding)  through April 30,
1994 and for the  fiscal year ended  April 30, 1995, the  Trust paid $1,694  and
$12,028,  respectively, with respect to the Financial Intermediary shares of the
Money Market Fund to financial intermediaries.  For the fiscal period from  July
12,   1994  (the  date  on  which   Financial  Intermediary  shares  were  first
outstanding) through April 30, 1995, the  Trust paid $3,715 with respect to  the
Financial  Intermediary shares  of the  Government Securities  Fund to financial
intermediaries. The Trust has not yet made payments to financial  intermediaries
with  respect to  the Financial Intermediary  shares of  the Treasury Securities
Fund.
    
 
   
     The Trust's agreements  with financial  intermediaries are  governed by  an
Amended and Restated Shareholder Services Plan (the 'Plan') adopted by the Board
of  Trustees in connection  with the offering  of Financial Intermediary shares.
Pursuant to  the Plan,  the Board  of Trustees  reviews, at  least quarterly,  a
written  report  of  the  amounts expended  under  the  Trust's  agreements with
financial intermediaries and the purposes for which the expenditures were  made.
In  addition,  the Trust's  arrangements with  financial intermediaries  must be
approved annually by  a majority of  the Trustees, including  a majority of  the
Trustees who are not 'interested persons' of the Trust as defined in the Act and
have  no  direct  or  indirect financial  interest  in  these  arrangements (the
'Disinterested Trustees').
    
 
     The Board of Trustees may  approve the Trust's arrangements with  financial
intermediaries  if,  based  on  information  provided  by  the  Trust's  service
contractors, there is a reasonable likelihood that the arrangements will benefit
the Trust and  its shareholders by  affording the Trust  greater flexibility  in
connection  with the servicing of  the accounts of the  beneficial owners of its
shares in an efficient manner. Any material amendment to the Funds' arrangements
with financial intermediaries  must be approved  by a majority  of the Board  of
Trustees,  including a  majority of the  Disinterested Trustees. So  long as the
Trust's arrangements with Financial Intermediaries are in
 
                                       16
 
<PAGE>
--------------------------------------------------------------------------------
effect, the selection and nomination of the members of the Board of Trustees who
are not  'interested persons'  of the  Trust, as  defined in  the Act,  will  be
committed to the discretion of those non-interested Trustees.
 
     Conflict  of interest restrictions may  apply to a financial intermediary's
receipt of compensation  paid by  a Fund in  connection with  the investment  of
fiduciary  funds  in  Financial Intermediary  shares.  Financial intermediaries,
including banks  regulated by  the Comptroller  of the  Currency and  investment
advisers  subject to  the jurisdiction  of the SEC,  the Department  of Labor or
state securities commissions, are urged  to consult their legal advisors  before
investing fiduciary funds in Financial Intermediary shares. See also 'Management
of the Trust -- Financial Intermediaries' in the Trust's prospectus.
 
                             PRINCIPAL SHAREHOLDERS
   
 
With  respect to the Government Securities Fund,  to the knowledge of the Trust,
the following persons  owned of record  5% or more  of the Fund's  Institutional
shares of beneficial interest on August 22, 1995:

     

   
          Robinson-Broadhurst Foundation, c/o Mitchell Hutchins Asset Management
     Inc.,  1285 Avenue of the Americas, New  York, New York 10019, owned 25.31%
     of the Fund's outstanding Institutional shares.

     
   
          The Chase  Manhattan Bank  NA, as  Custodian for  Chase Home  Mortgage
     Corp.,  c/o Mitchell  Hutchins Asset  Management Inc.,  1285 Avenue  of the
     Americas, New York, New York 10019,  owned 6.05% of the Fund's  outstanding
     Institutional shares.
     
   
 
          Frank  Ferri  and  Mary  Ellen  Ferri,  c/o  Mitchell  Hutchins  Asset
     Management Inc., 1285  Avenue of the  Americas, New York,  New York  10019,
     owned 5.55% of the Fund's outstanding Institutional shares.
     
   
 
          Marsam  Pharmaceuticals Inc.,  c/o Mitchell  Hutchins Asset Management
     Inc., 1285 Avenue of the Americas, New York, New York 10019, owned 7.18% of
     the Fund's outstanding Institutional shares.
     
   
 
     With respect to the Money Market Fund,  to the knowledge of the Trust,  the
following  persons owned of record 5% or more of the Fund's Institutional shares
of beneficial interest on August 22, 1995:
     
   
 
          Marine  Preservation   Association,   c/o  Mitchell   Hutchins   Asset
     Management  Inc., 1285  Avenue of the  Americas, New York,  New York 10019,
     owned 12.03% of the Fund's outstanding Institutional shares.
     
   
 
     With respect  to the  Treasury Securities  Fund, to  the knowledge  of  the
Trust,  the  following  persons  owned  of  record  5%  or  more  of  the Fund's
Institutional shares of beneficial interest on August 22, 1995:
     
   
 
          ITG Inc., c/o Mitchell Hutchins Asset Management Inc., 1285 Avenue  of
     the  Americas,  New  York,  New  York 10019,  owned  10.47%  of  the Fund's
     outstanding Institutional shares.
     
   
 
          Thermatrix Inc.,  c/o Mitchell  Hutchins Asset  Management Inc.,  1285
     Avenue of the Americas, New York, New York 10019, owned 5.27% of the Fund's
     outstanding Institutional shares.
     
 
                                       17
 
<PAGE>
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          James  M. Sweeney  Trustee FBO  James M.  Sweeney Trust,  c/o Mitchell
     Hutchins Asset Management Inc., 1285 Avenue of the Americas, New York,  New
     York 10019, owned 14.32% of the Fund's outstanding Institutional shares.
     
   
 
          Robert  S. Thompson and Elizabeth Thompson, Trustees FBO Robert S. and
     Elizabeth Thompson Trust, c/o Mitchell Hutchins Asset Management Inc., 1285
     Avenue of the Americas, New York, New York 10019, owned 5.72% of the Fund's
     outstanding Institutional shares.
     
   
 
          Mercury  Interactive   Corporation,   c/o  Mitchell   Hutchins   Asset
     Management  Inc., 1285  Avenue of the  Americas, New York,  New York 10019,
     owned 16.64% of the Fund's outstanding Institutional shares.
     
 
     The Trust is  not aware as  to whether or  to what extent  shares owned  of
record also are owned beneficially.
 
                       DIVIDENDS, DISTRIBUTIONS AND TAXES
 
Each  Fund is treated as a separate  entity for federal income tax purposes, has
qualified for the fiscal year ended April 30, 1995 to be treated as a 'regulated
investment company' under the Internal Revenue Code of 1986, as amended, and has
elected or intends to elect this treatment  for each year. Provided that a  Fund
distributes  at least 90%  of its net  investment income and  net realized short
term capital gains, a Fund, if  it qualifies as a regulated investment  company,
will  not be liable  for federal income  taxes to the  extent its net investment
income and its net long term and short term realized capital gains, if any,  are
distributed to its shareholders.
 
     Although  each  Fund expects  to be  relieved of  all or  substantially all
federal income taxes, depending  on the extent of  its activities in states  and
localities  in  which  its  offices  are  maintained,  in  which  its  agents or
independent contractors are  located or in  which it is  otherwise deemed to  be
conducting  business, that portion of a Fund's  income that is treated as earned
in any such state or locality could be subject to state and local tax. Any taxes
paid by  a Fund  would  reduce the  amount of  income  and gains  available  for
distribution to shareholders.
 
     While  each  of the  Funds does  not expect  to realize  any net  long term
capital gains, any such net realized  gains will be distributed as described  in
the  Prospectus. These distributions ('capital  gain dividends') will be taxable
to shareholders as long term capital gains, regardless of how long a shareholder
has held Fund  shares, and will  be designated  as capital gain  dividends in  a
written notice mailed by the Trust to shareholders after the close of the Fund's
taxable year.
 
     If a shareholder fails to furnish a correct taxpayer identification number,
fails  to report fully dividend or interest income, or fails to certify that the
shareholder has provided a correct  taxpayer identification number and that  the
shareholder  is not subject to withholding,  then the shareholder may be subject
to  a  31%  'backup  withholding'  tax   with  respect  to  (i)  dividends   and
distributions  and  (ii) the  proceeds  of any  redemptions  of Fund  shares. An
individual's taxpayer  identification  number  is his  or  her  social  security
number.  The 31% 'backup  withholding' tax is  not an additional  tax and may be
credited against a taxpayer's regular federal income tax liability.
 
     The foregoing is  only a  summary of certain  tax considerations  generally
affecting  the Funds and their shareholders and  is not intended as a substitute
for careful tax planning. Shareholders are  urged to consult their tax  advisers
with  specific reference to their own  tax situations, including their state and
local tax liabilities.
 
                                       18
 
<PAGE>
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                               YIELD INFORMATION
 
The 'current  yields'  and  'effective yields'  are  calculated  separately  for
Institutional  shares  and  Financial  Intermediary  shares  of  each  Fund. The
seven-day current yield for each class of  shares of each Fund is calculated  by
determining the net change in the value of a hypothetical preexisting account in
the Fund having a balance of one share of the class involved at the beginning of
the period, dividing the net change by the value of the account at the beginning
of  the period to obtain the base period return, and multiplying the base period
return by 365/7. The net change in the value of an account in the Fund  includes
the  value of additional shares purchased with dividends from the original share
and dividends declared on the original share and any such additional shares, net
of all fees charged to all shareholder  accounts in proportion to the length  of
the  base period and the Fund's average account size, but does not include gains
and  losses  or  unrealized  appreciation  and  depreciation.  In  addition,  an
effective  annualized yield quotation may be computed on a compounded basis with
respect to each class of  shares by adding 1 to  the base period return for  the
class involved (calculated as described above), raising the sum to a power equal
to 365/7 and subtracting 1 from the result. Similarly, based on the calculations
described  above, 30-day (or one-month) yields  and effective yields may also be
calculated.
 
     Yields fluctuate and  any quotation of  yield should not  be considered  as
representative  of the  future performance  of a  Fund. Since  yields fluctuate,
yield data  cannot necessarily  be used  to compare  an investment  in a  Fund's
shares  with bank deposits, savings accounts and similar investment alternatives
that often provide an agreed  or guaranteed fixed yield  for a stated period  of
time.  Shareholders  should remember  that performance  and yield  are generally
functions of  the kind  and quality  of  the investments  held in  a  portfolio,
portfolio  maturity, operating expenses, and market conditions. Any fees charged
by financial  intermediaries  with respect  to  investing customer  accounts  in
Financial  Intermediary  shares  of  a  Fund  will  not  be  included  in  yield
calculations; these fees, if  charged, would reduce the  actual yield from  that
quoted.
 
                             DESCRIPTION OF SHARES
 
The  Trust does  not currently  intend to  hold annual  meetings of shareholders
except as required by the Act or other applicable law. These laws under  certain
circumstances  provide  shareholders with  the right  to call  for a  meeting of
shareholders to consider  the removal  of one or  more Trustees.  To the  extent
required  by law,  the Trust will  assist in shareholder  communication in these
matters.
 
     As stated in the Prospectus, holders of Institutional shares and  Financial
Intermediary  shares will vote in the aggregate and not by class on all matters,
except  where  otherwise  required  by  law  and  except  that  only   Financial
Intermediary  shares will be entitled to vote  on matters submitted to a vote of
shareholders   pertaining   to   the   Trust's   arrangements   with   Financial
Intermediaries.  See  'Management  of  the  Fund  --  Financial Intermediaries.'
Further, shareholders  of  a Fund  and  of the  other  Funds will  vote  in  the
aggregate  and not by Fund except as otherwise required by law or when the Board
of Trustees  determines  that the  matter  to be  voted  upon affects  only  the
interests  of the shareholders  of a particular  Fund. Rule 18f-2  under the Act
provides that any matter required to be submitted by the provisions of that  Act
or  applicable  state  law, or  otherwise,  to  the holders  of  the outstanding
securities of an investment  company such as  the Trust shall  not be deemed  to
have been effectively acted upon unless approved by the holders of a majority of
the  outstanding shares of each Fund affected  by the matter. Rule 18f-2 further
provides that a Fund shall be deemed to be
 
                                       19
 
<PAGE>
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affected by a matter unless it is clear  that the interests of each Fund in  the
matter  are identical  or that the  matter does  not affect any  interest of the
Fund. Under that Rule, the approval  of an investment advisory agreement or  any
change  in a fundamental investment policy  would be effectively acted upon with
respect to  a  Fund only  if  approved  by the  holders  of a  majority  of  the
outstanding  voting securities  of the Fund.  That Rule,  however, also provides
that the ratification of the selection of independent accountants, the  approval
of principal underwriting contracts and the election of Trustees are not subject
to  the  separate  voting requirements  and  may  be effectively  acted  upon by
shareholders of the investment company voting without regard to the Fund.
 
SHAREHOLDER AND TRUSTEE LIABILITY
 
The Trust is an entity of the  type commonly known as a 'Massachusetts  business
trust,'  which  is the  form in  which  many mutual  funds are  organized. Under
Massachusetts  law,   shareholders  of   such  a   trust  may,   under   certain
circumstances,  be held personally liable as partners for the obligations of the
trust. The  Trust's  Declaration of  Trust  contains an  express  disclaimer  of
shareholder  liability  for acts  or obligations  of the  Trust. Notice  of this
disclaimer will normally be  given in each  agreement, obligation or  instrument
entered  into or executed by the Trust or the Trustees. The Declaration of Trust
provides for indemnification  by the relevant  Fund for any  loss suffered by  a
shareholder  as a result of an obligation  of the Fund. The Declaration of Trust
also provides that  the Trust  shall, upon request,  assume the  defense of  any
claim  made against any shareholder  for any act or  obligation of the Trust and
satisfy any  judgment  thereon.  Thus,  the  risk  of  a  shareholder  incurring
financial  loss on account of shareholder  liability is limited to circumstances
in which a Fund is unable to meet its obligations. The Trustees believe that, in
view of  the  above, the  risk  of personal  liability  of shareholders  is  not
material.
 
                     ADDITIONAL INFORMATION ABOUT THE TRUST
 
The  Prospectus and this Statement of  Additional Information do not contain all
the information  set  forth  in  the Registration  Statement  and  the  exhibits
relating  thereto, which the Trust  has filed with the  SEC under the Securities
Act and the Act, to which reference is hereby made.
 
                              FINANCIAL STATEMENTS
 
The Funds' Annual  Report to Shareholders  for the fiscal  year ended April  30,
1995  is  a  separate  document  supplied  with  this  Statement  of  Additional
Information and  the  financial statements,  accompanying  notes and  report  of
independent  auditors appearing  therein are  incorporated by  reference in this
Statement of Additional Information.
 
                                       20



<PAGE>
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                                   APPENDIX:
                             DESCRIPTION OF RATINGS
 
Set  forth below are  descriptions of the ratings  of Moody's Investors Service,
Inc. ('Moody's'), Standard & Poor's  ('S&P') and Fitch Investors Services,  Inc.
('Fitch'),  which represent their  opinions as to the  quality of the securities
that they undertake to rate. It should be emphasized, however, that ratings  are
relative and subjective and are not absolute standards of quality.
 
DESCRIPTION OF S&P CORPORATE BOND RATINGS:
 
     AAA  -- Bonds rated AAA  have the highest rating assigned  by S&P to a debt
obligation. Capacity to pay interest and repay principal is extremely strong.
 
     AA -- Bonds rated AA have a very strong capacity to pay interest and  repay
principal and differ from the highest rated issues only in small degree.
 
DESCRIPTION OF MOODY'S CORPORATE BOND RATINGS:
 
     Aaa  -- Bonds that  are rated Aaa are  judged to be  the best quality. They
carry the smallest degree  of investment risk and  are generally referred to  as
'gilt-edge.'  Interest payments are protected by a large or exceptionally stable
margin and principal is secure. While the various protective elements are likely
to change, these changes as  can be visualized are  most unlikely to impair  the
fundamentally strong position of these issues.
 
     Aa  -- Bonds that are Aa are judged to be of high quality by all standards.
Together with the Aaa group they comprise what are generally known as high grade
bonds. They are rated  lower than the best  bonds because margins of  protection
may  not be as large as in  Aaa securities or fluctuation of protective elements
may be of greater amplitude or there may be other elements present that make the
long term risks appear somewhat larger  than in Aaa securities. Moody's  applies
the numerical modifiers 1, 2 and 3 to each generic rating classification from Aa
through B. The modifier 1 indicates that the security ranks in the higher end of
its  generic rating category,  the modifier 2 indicates  a mid-range ranking and
the modifier 3 indicates that  the issue ranks in the  lower end of its  generic
rating category.
 
DESCRIPTION OF S&P COMMERCIAL PAPER RATINGS:
 
     Commercial  paper  rated A-1  by S&P  indicates that  the degree  of safety
regarding timely payment  is either  overwhelming or very  strong. Those  issues
determined to possess overwhelming safety characteristics are denoted A-1+.
 
DESCRIPTION OF MOODY'S COMMERCIAL PAPER RATINGS:
 
     The  rating  Prime-1 is  the highest  commercial  paper rating  assigned by
Moody's.  Issuers  rated  Prime-1  (or  related  supporting  institutions)   are
considered  to have a  superior capacity for repayment  of short term promissory
obligations.
 
DESCRIPTION OF FITCH'S SHORT TERM RATINGS:
 
     Fitch employs the  rating F-1+ to  indicate issues regarded  as having  the
strongest  degree of  assurance for timely  payment. The rating  F-1 reflects an
assurance of timely payment only slightly less in degree than issues rated F-1+.
 
     Various of the rating agencies utilize rankings within categories indicated
by a + or   - . The Trust in  accordance with industry practice, recognize  such
rankings  within categories as  gradations, viewing for  example S&P's rating of
A-1+ and A-1 - as being in S&P's highest rating category.
 
                                       21


<PAGE>
 
<TABLE>
<S>                                            <C>
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Table of Contents
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Investment Objective and Policies                      2
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Purchase and Redemption of Shares                      9
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Management of the Trust                               10
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Investment Advisory and Other Services                13
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Principal Shareholders                                17
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Dividends, Distributions and Taxes                    18
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Yield Information                                     19
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Description of Shares                                 19
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Additional Information About the Trust                20
--------------------------------------------------------
Financial Statements                                  20
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Appendix: Description of Ratings                      21
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</TABLE>

                                      Liquid
                               Institutional
                                    Reserves
  Statement of
  Additional
  Information
 
   September 1, 1995
 
                           Money Market Fund
                Government  Securities  Fund
                    Treasury Securities Fund
 
Institutional Shares
Financial Intermediary Shares




                           STATEMENT OF DIFFERENCES
     The dagger symbol shall be expressed as ...............   'D'
     The service mark symbol shall be expressed as .........  'sm'
     The registered trademark symbol shall be expressed as ..  'r'






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