LIQUID INSTITUTIONAL RESERVES
497, 1996-11-14
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<PAGE>
<PAGE>
                         LIQUID INSTITUTIONAL RESERVES
                               MONEY MARKET FUND
                           GOVERNMENT SECURITIES FUND
                            TREASURY SECURITIES FUND
            1285 AVENUES OF THE AMERICAS   NEW YORK, NEW YORK 10019
 
Professionally managed money market funds seeking:
 
      High Current Income
 
      High Liquidity
 
      Preservation of Capital
 
Money  Market Fund, Government Securities Fund and Treasury Securities Fund (the
'Funds') are series of Liquid  Institutional Reserves, a Massachusetts  business
trust    ('Trust').    Each    Fund    offers    two    separate    classes   of
shares  --   'Institutional'  shares   and  'Financial   Intermediary'   shares.
Institutional  shares  are  available for  purchase  primarily  by institutional
investors. Financial Intermediary shares are available for purchase by banks and
other financial intermediaries for the benefit of their customers.
 
This Prospectus concisely  sets forth  information that  a prospective  investor
should  know about the Funds before investing. Please retain this Prospectus for
future reference. A Statement of Additional Information dated September 1,  1996
(which  is incorporated by reference herein)  has been filed with the Securities
and Exchange Commission ('SEC'). The Statement of Additional Information can  be
obtained  without charge, and  further inquiries can be  made, by contacting the
Funds, your  PaineWebber  Investment Executive  or  PaineWebber's  correspondent
firms, or by calling toll free 1-800-762-1000.
 
AN  INVESTMENT  IN  A  FUND  IS  NEITHER  INSURED  NOR  GUARANTEED  BY  THE U.S.
GOVERNMENT. WHILE EACH FUND SEEKS 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.
 
- --------------------------------------------------------------------------------
 
 THESE   SECURITIES   HAVE   NOT   BEEN   APPROVED   OR   DISAPPROVED   BY  THE
    SECURITIES   AND   EXCHANGE   COMMISSION   OR   ANY   STATE   SECURITIES
     COMMISSION   NOR   HAS   ANY   SUCH   COMMISSION   PASSED   UPON   THE
        ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION  TO 
                THE  CONTRARY   IS  A   CRIMINAL   OFFENSE.
 
                       PROSPECTUS DATED SEPTEMBER 1, 1996



<PAGE>
<PAGE>
                                   HIGHLIGHTS
 
     See  elsewhere  in  the  Prospectus  for  more  information  on  the topics
discussed in these highlights.
 
<TABLE>
<S>                          <C>
The Funds:                   Professionally managed money market funds (each a 'Fund'). 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. Shares sold to institutions are held in a PaineWebber Resource Management
                             Account ('RMA')'r' or a PaineWebber Business Services Account ('BSA')'r' established
                             for these institutions.
 
                             Each Fund offers investors the choice of investing in two separate classes of
                             shares.
 
                             Institutional shares are available for purchase primarily by institutional
                              investors.
 
                             Financial Intermediary shares are available for purchase solely by banks and other
                              financial intermediaries for the benefit of their customers. Financial Intermediary
                              shares bear all fees payable by the Funds to those financial intermediaries for
                              certain services they provide to the beneficial owners of those shares. See
                              'Purchases,' 'Redemptions,' 'Financial Intermediaries' and 'Valuation of Shares.'
 
Investment Objectives and    Money Market Fund -- A diversified money market fund seeking high current income to
  Policies:                  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; invests in high
                             quality money market instruments.
 
                             Government Securities Fund -- A diversified money market fund seeking high current
                             income consistent with the preservation of capital and maintenance of liquidity
                             through investments in a diversified portfolio of high quality, short-term, U.S.
                             dollar-denominated money market instruments; invests in short-term U.S. government
                             securities, the interest income from which is generally exempt from state income
                             taxation.
 
                             Treasury Securities Fund -- A diversified money market fund seeking high current
                             income consistent with preservation of capital and maintenance of liquidity through
                             investments in a diversified portfolio of high quality, short-term, U.S.
                             dollar-denominated money market instruments; invests exclusively in securities
                             issued by the U.S. Treasury, which are supported by the full faith and credit of the
                             United States.
 
Net Assets at                Money Market Fund -- $502.7 million.
  July 31, 1996:             Government Securities Fund -- $51.1 million.
                             Treasury Securities Fund -- $18.1 million.
 
Distributor and Investment   PaineWebber Incorporated ('PaineWebber'). See 'Management.'
  Adviser:
 
Sub-Adviser:                 Mitchell Hutchins Asset Management Inc. ('Mitchell Hutchins'). See 'Management'
 
Purchases:                   Shares are available exclusively through PaineWebber and its correspondent firms.
                             See 'Purchases.'
 
Redemptions:                 Shares may be redeemed through PaineWebber or its correspondent firms. See
                             'Redemptions.'
 
Dividends:                   Declared daily and paid monthly. See 'Dividends and Taxes.'
 
Reinvestment:                All dividends are automatically paid in Fund shares.
 
Minimum Initial Purchase:    $1,000,000 for Money Market Fund and Government Securities Fund and $250,000 for
                             Treasury Securities Fund; no minimum for subsequent purchases.
 
Public Offering Price:       Net asset value, which each Fund seeks to maintain at $1.00 per share.
</TABLE>
 
                                       2
 

<PAGE>
<PAGE>
     WHO SHOULD INVEST.   Each Fund has its  own suitability considerations  and
risk  factors, as  summarized below  and described  in detail  under 'Investment
Objectives and Policies.' 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,  insurance companies,  investment
counsellors,  pension funds, employee benefit  plans, law firms, trusts, estates
and educational,  religious and  charitable organizations.  See 'Purchases'  and
'Management.'
 
     Shares  of the  Funds are  held in  RMA or  BSA through  brokerage accounts
established  for  these  institutions  under  the  RMA  or  BSA  programs.   See
'Purchases.'  Shares of  the Funds may  be offered  to PaineWebber institutional
clients with other types of accounts under certain limited circumstances.
 
     RISK FACTORS.  There  can be no  assurance that any  Fund will achieve  its
investment  objective. In  periods of declining  interest rates,  a Fund's yield
will tend to be somewhat higher than prevailing market rates, and in periods  of
rising  interest rates, a  Fund's yield generally will  be somewhat lower. 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. See 'Investment Objective  and Policies' for more information
about these and other risk factors.
 
                                       3
 

<PAGE>
<PAGE>
     EXPENSES OF INVESTING IN  THE FUNDS. The following  tables are intended  to
assist investors in understanding the expenses associated with investing in each
Fund.
 
                        SHAREHOLDER TRANSACTION EXPENSES
                                 FOR ALL FUNDS
 
<TABLE>
<S>                                                                                           <C>
Sales charge on purchases of shares........................................................   None
Sales charge on reinvested dividends.......................................................   None
Redemption fee or deferred sales charge....................................................   None
</TABLE>
 
                        ANNUAL FUND OPERATING EXPENSES*
                    (AS A PERCENTAGE OF AVERAGE NET ASSETS)
<TABLE>
<CAPTION>
                                                                                   GOVERNMENT
                                     MONEY MARKET FUND                          SECURITIES FUND
                           --------------------------------------    --------------------------------------
                                                    FINANCIAL                                 FINANCIAL
                             INSTITUTIONAL        INTERMEDIARY         INSTITUTIONAL        INTERMEDIARY
                                SHARES              SHARES**              SHARES              SHARES**
                           -----------------    -----------------    -----------------    -----------------
<S>                        <C>                  <C>                  <C>                  <C>
Management Fees (after
  fee waivers)..........              0.20%                0.20%                0.20%                0.20%
Shareholder Servicing
  Fees..................              0.00%                0.25%                0.00%                0.25%
Other Expenses (after
  reimbursements).......              0.10%                0.10%                0.10%                0.10%
                                    -------              -------              -------              -------
Total Operating Expenses
  (after fee waivers and
  reimbursements).......              0.30%                0.55%                0.30%                0.55%
                                    -------              -------              -------              -------
                                    -------              -------              -------              -------
 
<CAPTION>
 
                             TREASURY SECURITIES FUND
                        ----------------------------------
                                             FINANCIAL
                        INSTITUTIONAL      INTERMEDIARY
                            SHARES           SHARES**
                        --------------   -----------------
<S>                        <C>           <C>
Management Fees (after
  fee waivers)..........        0.20%               0.20%
Shareholder Servicing
  Fees..................        0.00%               0.25%
Other Expenses (after
  reimbursements).......        0.10%               0.10%
                              -------             -------
Total Operating Expenses
  (after fee waivers and
  reimbursements).......        0.30%               0.55%
                              -------             -------
                              -------             -------
</TABLE>
 
                      EXAMPLE OF EFFECT OF FUND EXPENSES*
 
     An  investor would pay  directly or indirectly the  following expenses on a
$1,000 investment in each Fund, assuming a 5% annual return:
 
<TABLE>
<CAPTION>
                                                                              1 YEAR    3 YEARS    5 YEARS    10 YEARS
                                                                              ------    -------    -------    --------
<S>                                                                           <C>       <C>        <C>        <C>
Money Market Fund
     Institutional shares..................................................     $3        $10        $17        $ 38
     Financial Intermediary shares.........................................     $6        $18        $31        $ 69
Government Securities 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>
 
     This Example  assumes  that  all  dividends are  reinvested  and  that  the
percentage  amounts listed under Annual Fund  Operating Expenses remain the same
in the years shown. The above tables and  the assumption in the Example of a  5%
annual  return are required by  regulations of the SEC  applicable to all mutual
funds; the  assumed 5%  annual  return is  not a  prediction  of, and  does  not
represent, any Fund's projected or actual performance.
 
     THE  EXAMPLE SHOULD  NOT BE CONSIDERED  A REPRESENTATION OF  PAST OR FUTURE
EXPENSES, AND EACH FUND'S ACTUAL EXPENSES MAY BE MORE OR LESS THAN THOSE  SHOWN.
The actual expenses of each Fund will depend upon, among other things, the level
of  average  net  assets and  the  extent  to which  each  Fund  incurs variable
expenses, such as  transfer agency costs,  and the extent  to which  PaineWebber
waives fees or reimburses a Fund for expenses.
 
                                          (footnotes continue on following page)
 
                                       4
 

<PAGE>
<PAGE>
(footnotes from previous page)
 
      *  Information in the expense  table and the example  has been restated to
reflect an agreement by PaineWebber and Mitchell Hutchins to waive 0.05% of  the
management  fees and to reduce or otherwise  limit the expenses of each Fund, on
an annualized basis, to 0.30% and 0.55% of each Fund's average daily net  assets
for Institutional shares and Financial Intermediary shares, respectively. In the
absence of this agreement, Money Market Fund's, Government Securities Fund's and
Treasury  Securities Fund's total operating expenses,  stated as a percentage of
average net assets, would  have been 0.37%, 0.56%  and 0.94%, respectively,  for
Institutional  shares and 0.62%, 0.81%  and 1.19% (estimated), respectively, for
Financial Intermediary shares. Without this agreement, under the assumptions set
forth in the example above, the expenses on a $1,000 investment in Money  Market
Fund, 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; $6, $18, $31 and
$70;  and $10,  $30, $52  and $115,  respectively, for  Institutional shares and
would have been $6, $20, $35 and $77;  $8, $26, $45 and $100; and $12, $38,  $65
and   $144  (estimated),   respectively,  for   Financial  Intermediary  shares.
PaineWebber and Mitchell Hutchins do not anticipate that they will waive fees or
reimburse expenses in the current fiscal year, except to the extent necessary to
comply with  the fee  waiver and  total expense  limitation agreement  described
above.
 
     **  No Financial  Intermediary shares  were outstanding  during each Fund's
last fiscal year.
 
                                       5



<PAGE>
<PAGE>
FINANCIAL HIGHLIGHTS
 
     The  tables below provide selected per share  data and ratios for one share
of each class of shares of each Fund for each of the periods shown. No Financial
Intermediary shares  were outstanding  during the  fiscal year  ended April  30,
1996.   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,  1996, and the unqualified  report of Ernst &  Young
LLP,  independent  auditors,  also  appearing in  the  Funds'  Annual  Report to
Shareholders.  Both  are  incorporated  by  reference  into  the  Statement   of
Additional Information. The Funds' Annual Report to Shareholders may be obtained
without charge by calling 1-800-647-1568. The financial statements and notes, as
well  as the information in the tables  appearing below insofar as it relates to
the fiscal year ended April  30, 1996, have been audited  by Ernst & Young  LLP.
The financial information for the prior years was audited by another independent
accounting firm, whose reports thereon also were unqualified.


<TABLE>
<CAPTION>
                                           MONEY MARKET FUND
                         ------------------------------------------------------
                                          INSTITUTIONAL SHARES
                         ------------------------------------------------------
                                                                 FOR THE PERIOD
                                  FOR THE YEARS ENDED               JUNE 3,
                                       APRIL 30,                    1991`D'
                         -------------------------------------         TO
                          1996     1995`D'`D'  1994     1993     APRIL 30, 1992
                         -------   -------   -------   -------   --------------
 
<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...............    0.055     0.048     0.030     0.031         0.044
Net realized losses
  from investment
  transactions.........     --      (0.008)     --        --            --
                         -------    -------   -------   -------     -------
Net increase from
  investment
  operations...........    0.055     0.040     0.030     0.031         0.044
                         -------    -------   -------   -------      -------
Dividends from net
  investment income....   (0.055)   (0.048)   (0.030)   (0.031)       (0.044)
                          -------   -------   -------   -------      -------
Contribution to capital
  from predecessor
  adviser (1)..........     --       0.008      --        --            --
                         -------    -------   -------   -------      -------
Net asset value, end of
  period...............   $ 1.00    $ 1.00    $ 1.00    $ 1.00       $  1.00
                         -------    -------   -------   -------      -------
                         -------    -------   -------   -------      -------
Total investment return
  (2)..................     5.61%     4.91%     3.03%     3.16%         4.52%
                         -------    -------   -------   -------      -------
                         -------    -------   -------   -------      -------
Ratios/Supplemental
  Data:
Net assets, end of
  period (000's)....... $421,878  $220,844  $254,281  $385,618      $335,868
Expenses to average net
  assets after
 waivers/reimbursements
  from adviser.........     0.31%     0.35%     0.33%     0.34%         0.30%*
Expenses to average net
  assets before
 waivers/reimbursements
  from adviser.........     0.37%     0.37%     0.33%     0.36%         0.41%*
Net investment income
  to average net assets
  after
 waivers/reimbursements
  from adviser.........     5.47%     4.68%     2.96%     3.13%         4.76%*
Net investment income
  to average net assets
  before
 waivers/reimbursements
  from adviser.........     5.41%     4.66%     2.96%     3.11%         4.65%*
 
<CAPTION>
 
                                      FINANCIAL
                                    INTERMEDIARY
                                      SHARES**
                          ---------------------------------
                           FOR THE
                            YEAR         FOR THE PERIOD
                            ENDED      MARCH 17, 1994`D'
                          APRIL 30,            TO
                          1995`D'`D'     APRIL 30, 1994
                          ---------  ----------------------
<S>                      <C>         <C>
Net asset value,
  beginning of
  period...............   $ 1.00            $  1.00
                          ------            -------
Net investment
  income...............    0.027              0.004
Net realized losses
  from investment
  transactions.........     --                 --
                          ------              -----
Net increase from
  investment
  operations...........    0.027              0.004
                          ------            -------
Dividends from net
  investment income....   (0.027)            (0.004)
                          ---------          -------
Contribution to capital
  from predecessor
  adviser (1)..........     --                 --
                          ---------          -------
Net asset value, end of
  period...............   $ 1.00            $  1.00
                         ---------          -------
                         ---------          -------
Total investment return
  (2)..................     3.10%              0.37%
                          ---------         -------
                          ---------         -------
Ratios/Supplemental
  Data:
Net assets, end of
  period (000's).......       --             $9,000
Expenses to average net
  assets after
 waivers/reimbursements
  from adviser.........     0.60%              0.58%*
Expenses to average net
  assets before
 waivers/reimbursements
  from adviser.........     0.62%              0.58%*
Net investment income
  to average net assets
  after
 waivers/reimbursements
  from adviser.........     4.17%              2.93%*
Net investment income
  to average net assets
  before
 waivers/reimbursements
  from adviser.........     4.15%              2.93%*
</TABLE>
 
- ------------
 
 `D' Commencement of issuance of shares
 
 `D'`D' Investment  advisory functions for the Fund were transferred from Kidder
        Peabody Asset Management, Inc. to Mitchell Hutchins on January 30, 1995.
 
 * Annualized
 
 ** For the year ended April 30, 1996 and for the period from December 24,  1994
    to April 30, 1995 there were no outstanding Financial Intermediary shares of
    Money Market Fund. For the year ended April 30, 1996 and for the period from
    March  22,  1995  to April  30,  1995  there were  no  outstanding Financial
    Intermediary shares of Government Securities Fund.
 
(1) Kidder Peabody  Asset Management,  Inc., the  Funds' predecessor  investment
    adviser  and  administrator, purchased  certain of  Money Market  Fund's and
    Government Securities Fund's  variable rate  securities on July  6, 1994  at
    prices  equal  to the  securities' amortized  cost  plus accrued  and unpaid
    interest. Since  the purchases  were made  at prices  above the  securities'
    current fair value the Funds recorded a contribution to capital.
 
(2) Total  investment return is calculated assuming  a $1,000 investment in Fund
    shares on  the  first day  of  each  period reported,  reinvestment  of  all
    dividends  and other distributions at net  asset value on the payable dates,
    and a sale  at net asset  value on the  last date of  each period  reported.
    Total  investment returns for  periods of less  than one year  have not been
    annualized.
 
                                       6
 

<PAGE>
<PAGE>
<TABLE>
<CAPTION>
              GOVERNMENT SECURITIES FUND
  --------------------------------------------------
                                            FINANCIAL
                                          INTERMEDIARY
            INSTITUTIONAL SHARES            SHARES**
  ------------------------------------- --------------------
                                         FOR THE      FOR THE
                                          PERIOD      PERIOD
         FOR THE YEARS ENDED              JUNE 3,     JULY 12,
              APRIL 30,                   1991`D'     1994`D'  
  ---------------------------------         TO          TO
                                           APRIL      APRIL 30,
  1996       1995`D'`D'   1994     1993   30, 1992   1995`D'`D'
  ----       ---------    ----     ----   --------   ---------
 
<C>          <C>       <C>       <C>        <C>       <C>
 $    1.00   $  1.00   $  1.00   $  1.00    $  1.00   $ 1.00
   --------    -------   -------   -------    -------  -----
     0.053     0.048     0.029     0.031      0.044    0.032
 
     0.001    (0.008)      --        --         --       --
  --------    -------   -------   -------    -------  -------
     0.054     0.040     0.029     0.031      0.044      --
  --------    -------   -------   -------    -------  -------
    (0.054)   (0.047)   (0.029)   (0.031)    (0.044)  (0.032)
  --------    -------   -------   -------    -------  -------
       --      0.007       --        --         --       --
  --------    -------   -------   -------    -------  -------
  $   1.00   $  1.00  $   1.00   $  1.00    $  1.00    $ 1.00
  --------    -------   -------   -------    -------  -------
  --------    -------   -------   -------    -------  -------
      5.50%     4.61%     2.97%     3.13%      4.46%     3.31%
  --------    -------   -------   -------    -------  -------
  --------    -------   -------   -------    -------  -------
    $43,770   $54,903   $84,209  $102,611   $144,853     --
      0.32%     0.35%     0.35%     0.34%      0.30%*   0.60%*
      0.56%     0.47%     0.37%     0.36%      0.41%*   0.72%*
      5.52%     4.75%     2.95%     3.11%      4.63%*   4.58%*
 
      5.28%     4.63%     2.93%      3.09%  4.52%*   4.46%*
 
<CAPTION>
                TREASURY SECURITIES FUND
- -----------------------------------------------------------
                   INSTITUTIONAL SHARES
- -----------------------------------------------------------
                                           FOR THE PERIOD                                   
            FOR THE YEARS ENDED               DECEMBER 6,
                 APRIL 30,                      1991`D'
     ----------------------------------            TO
         1996    1995`D'`D'   1994    1993   APRIL 30, 1992
      --------    -------   -------   ------ --------------
       <C>      <C>       <C>       <C>         <C>
       $  1.00  $   1.00  $   1.00  $   1.00     $  1.00
       --------  -------   -------   -------     -------
         0.048     0.049     0.028     0.029       0.016
         0.003    (0.002)      --        --         --
       --------  -------   -------   -------     -------
         0.051     0.047     0.028     0.029       0.016
       --------  -------   -------   -------     -------
        (0.051)   (0.047)   (0.028)   (0.029)     (0.016)
       --------  -------   -------   -------     -------
          --        --        --        --          --
       --------  -------   -------   -------     -------
       $  1.00   $  1.00  $   1.00   $  1.00       $1.00
       --------  -------   -------   -------     -------
       --------  -------   -------   -------     -------
          5.23%     4.75%     2.87%     2.89%       1.62%
       --------  -------   -------   -------     -------
       --------  -------   -------   -------     -------
       $19,624   $23,762   $38,602    $8,064     $15,003
          0.32%     0.22%     0.18%     0.33%       0.06%*
          0.94%     0.84%     0.76%     1.10%       2.05%*
          5.71%     5.51%     3.66%     3.65%       5.88%*
          5.09%     4.89%     3.08%     2.88%       3.89%*
</TABLE>


                                     7 

<PAGE>
<PAGE>
INVESTMENT OBJECTIVES 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. Each Fund seeks to
meet this objective by following different investment policies.
 
     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. In  managing each Fund's  portfolio,
Mitchell   Hutchins  may  employ  a  number  of  professional  money  management
techniques, including varying the composition and the weighted average  maturity
of  each Fund's portfolio  based upon its  assessment of the  relative values of
various money market instruments and future interest rate patterns, in order  to
respond to changing economic and money market conditions and to shifts in fiscal
and  monetary policy. Mitchell Hutchins may also  seek to improve a Fund's yield
by purchasing or selling securities to take advantage of yield disparities among
similar or dissimilar money market instruments that regularly occur in the money
market.
 
     There can be  no assurance  that the  Funds will  achieve their  investment
objectives.  In periods of declining interest rates, the Funds' yields will tend
to be somewhat  higher than prevailing  market rates, and  in periods of  rising
interest rates the opposite will be true. Also, when interest rates are falling,
net  cash inflows from the  continuous sale of a Fund's  shares are likely to be
invested in portfolio  instruments producing  lower yields than  the balance  of
that Fund's portfolio, thereby reducing its yield. In periods of rising interest
rates, the opposite can be true.
 
MONEY MARKET FUND
 
     Money   Market   Fund   invests   in   high   quality,   short-term,   U.S.
dollar-denominated money  market  instruments. These  instruments  include  U.S.
government  securities, obligations  of U.S.  banks, commercial  paper and other
short-term corporate  obligations,  corporate  bonds  and  notes,  variable  and
floating   rate  securities  and  loan  participation  interests  or  repurchase
agreements involving any  of the foregoing  securities. Participation  interests
are pro rata interests in securities held by others.
 
     The  U.S. government securities  in which the Money  Market Fund may invest
include direct obligations of the U.S.  Treasury (such as Treasury bills,  notes
and  bonds) and obligations issued or guaranteed by U.S. government agencies and
instrumentalities, including securities that are supported by the full faith and
credit of the U.S. government (such as Government National Mortgage  Association
certificates  ('GNMAs')),  securities  supported  primarily  or  solely  by  the
creditworthiness of the  issuer (such  as securities of  the Resolution  Funding
Corporation  and  the  Tennessee  Valley  Authority)  and  securities  that  are
supported  primarily   or  solely   by  specific   pools  of   assets  and   the
creditworthiness  of a  U.S. government-related issuer  (such as mortgage-backed
securities issued by the Federal National Mortgage Association).
 
     Money Market  Fund may  invest in  obligations (including  certificates  of
deposit,  bankers' acceptances and similar obligations) of U.S. banks, including
foreign branches  of domestic  banks,  domestic branches  of foreign  banks  and
foreign branches of foreign banks, having total assets in excess of $1.5 billion
at  the time of purchase. The Fund may invest in non-negotiable time deposits of
U.S. banks,  savings associations  and  similar depository  institutions  having
total  assets in excess of $1.5 billion at the time of purchase only if the time
deposits have  maturities of  seven days  or less.  Money Market  Fund also  may
invest   in  interest-bearing  savings  deposits   in  U.S.  banks  and  savings
associations having total  assets of  $1.5 billion  or less,  provided that  the
principal  amounts at each  such bank are  fully insured by  the Federal Deposit
Insurance Corporation and the aggregate  amount of such deposits (plus  interest
accrued) does not exceed 5% of the Fund's assets.
 
     The  commercial paper and other  short-term corporate obligations purchased
by Money  Market  Fund  consist  only  of  obligations  that  Mitchell  Hutchins
determines,  pursuant to  procedures adopted by  the Trust's  board of trustees,
present minimal credit risks and 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 to be of comparable
quality
 
                                       8
 

<PAGE>
<PAGE>
('First Tier Securities'). The Fund generally may invest no more than 5% of  its
total  assets in the securities of a single issuer (other than securities issued
by the U.S. government, its agencies or instrumentalities).
 
GOVERNMENT SECURITIES FUND
 
     Government Securities  Fund  invests  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. The  Fund seeks to invest  substantially 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.
 
     Each investor  should consult  its  own tax  advisor to  determine  whether
distributions  from  Government Securities  Fund  derived from  interest  on its
portfolio securities are exempt from state income taxation in the investor's own
state.
 
TREASURY SECURITIES FUND
 
     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. The Fund may acquire any of these securities on a forward commitment  or
when-issued basis. The Fund will not enter into repurchase agreements.
 
OTHER INVESTMENT POLICIES AND RISK FACTORS
 
     U.S.  GOVERNMENT SECURITIES  -- CUSTODIAL  RECEIPTS. Money  Market Fund may
acquire custodial receipts that evidence ownership of future interest  payments,
principal  payments or both that have been 'stripped' from certain U.S. Treasury
notes or bonds. These custodial receipts  are known by various names,  including
'Treasury  Investment Growth Receipts' ('TIGRs') and 'Certificates of Accrual on
Treasury Securities' ('CATS'). Each  Fund may also  invest in separately  traded
principal and interest components of securities issued or guaranteed by the U.S.
Treasury.  The  principal and  interest  components of  selected  securities are
traded independently  under  the Separate  Trading  of Registered  Interest  and
Principal  of  Securities  ('STRIPS')  program. Under  the  STRIPS  program, the
principal and  interest  components  are individually  numbered  and  separately
issued  by the U.S. Treasury. The staff  of the SEC currently takes the position
that interests in 'stripped' U.S. government securities that are not part of the
STRIPS program are not U.S. government securities.
 
     VARIABLE AMOUNT MASTER DEMAND NOTES.  Securities purchased by Money  Market
Fund  may  include  variable amount  master  demand notes,  which  are unsecured
redeemable obligations that permit investment of varying amounts at  fluctuating
interest  rates under a  direct agreement between  the Fund and  the issuer. The
principal amount  of these  notes may  be increased  from time  to time  by  the
parties  (subject to specified maximums) or decreased by the Fund or the issuer.
These notes are payable on demand and are typically unrated.
 
     REPURCHASE  AGREEMENTS.  Money  Market  Fund  may  enter  into   repurchase
agreements  with U.S. banks  and dealers with  respect to any  security in which
that Fund is  authorized to  invest. Repurchase agreements  are transactions  in
which  the Fund purchases securities from a bank or recognized securities dealer
and simultaneously commits to resell the securities to that bank or dealer at an
agreed-upon date or  upon demand  and at  a price  reflecting a  market rate  of
interest  unrelated to the coupon rate  or maturity of the purchased securities.
Although repurchase agreements  carry certain risks  not associated with  direct
investments in securities, including possible decline in the market value of the
underlying securities and delays and costs to the Fund if the other party to the
repurchase   agreement  becomes  insolvent,  the  Fund  intends  to  enter  into
repurchase agreements only with  banks and dealers  in transactions believed  by
Mitchell  Hutchins to present minimal credit risks in accordance with guidelines
established by the Trust's board of trustees.
 
                                       9
 

<PAGE>
<PAGE>
     FOREIGN SECURITIES. Money Market Fund may invest in U.S. dollar-denominated
securities of foreign issuers, including debt securities of foreign corporations
and foreign governments and obligations  of foreign banks, domestic branches  of
foreign  banks,  foreign  branches of  domestic  banks and  foreign  branches of
foreign banks.  Such  investments may  involve  risks that  are  different  from
investments  in  U.S.  issuers.  These  risks  may  include  future  unfavorable
political and  economic developments,  possible  withholding taxes,  seizure  of
foreign  deposits, currency controls, interest limitations or other governmental
restrictions that  might affect  the payment  of principal  or interest  on  the
securities  held by the Fund. Additionally, there may be less publicly available
information about foreign  issuers as these  issuers may not  be subject to  the
same regulatory requirements as domestic issuers.
 
     LENDING  OF PORTFOLIO  SECURITIES. Each  Fund is  authorized to  lend up to
33 1/3% of  the total  value of its  portfolio securities  to broker-dealers  or
institutional   investors  that  Mitchell   Hutchins  deems  qualified.  Lending
securities enables a Fund to earn additional income, but could result in a  loss
or delay in recovering securities.
 
     OTHER   INVESTMENT  POLICIES.  Each  Fund  may  purchase  securities  on  a
'when-issued' or  forward commitment  basis, that  is, for  delivery beyond  the
normal  settlement date at a stated price  and yield. A Fund generally would not
pay for  such  securities or  start  earning interest  on  them until  they  are
received.  However, when a Fund purchases  securities on a when-issued basis, it
immediately assumes  the  risks  of  ownership,  including  the  risk  of  price
fluctuation.  Failure  by  the  issuer  to deliver  a  security  purchased  on a
when-issued basis  may  result  in a  loss  or  missed opportunity  to  make  an
alternative investment.
 
     Each  Fund  may  borrow  money  from banks  for  temporary  purposes  in an
aggregate amount not exceeding 33 1/3% of the value of the Fund's total  assets.
A  Fund may not purchase portfolio securities  while borrowings exceed 5% of the
value of the Fund's assets.
 
     No Fund will invest more than 10% of its net assets in illiquid securities,
including repurchase agreements with maturities in excess of seven days.
 
     A Fund's investment objective  may not be changed  without the approval  of
its  shareholders.  Certain other  investment limitations,  as described  in the
Statement of Additional Information, also may not be changed without shareholder
approval. All other investment policies may  be changed by the Trust's board  of
trustees without shareholder approval.
 
PURCHASES
 
     Each  Fund offers investors the choice of investing in two separate classes
of  shares   --  Institutional   shares  and   Financial  Intermediary   shares.
Institutional  shares in each  Fund are available  for purchase by institutional
investors,  and,  at  the  discretion  of  PaineWebber,  may  be  purchased   by
individuals  or other entities.  Financial Intermediary shares  in each Fund are
only available for purchase by banks and other financial intermediaries for  the
benefit  of  their customers  and bear  all fees  payable by  the Fund  to those
financial intermediaries for  certain services  they provide  to the  beneficial
owners of these shares.
 
     The  minimum  initial  investment is  $1,000,000  in Money  Market  Fund or
Government Securities  Fund  (or in  a  combination  of both)  and  $250,000  in
Treasury  Securities Fund.  These minimums  may be  waived at  the discretion of
PaineWebber. Financial  intermediaries purchasing  shares  for the  accounts  of
their  customers  may set  a higher  minimum  for their  customers. There  is no
minimum subsequent investment.
 
     Purchases of Fund shares will be effected on Business Days on which federal
funds become available to the Fund, as described below. A 'Business Day' is  any
day  on which the Boston offices of  the Fund's custodian, State Street Bank and
Trust Company ('Custodian'), and  the New York City  offices of PaineWebber  and
PaineWebber's  bank  are  all  open  for  business.  'Federal  funds'  are funds
deposited by a commercial bank in an account at a Federal Reserve Bank that  can
be  transferred to a similar account of another  bank in one day and thus may be
made immediately available to a Fund through its custodian.
 
     The Funds and PaineWebber  reserve the right to  reject any purchase  order
and to suspend the offering of Fund shares for a period of time.
 
     Purchases  of Fund shares by qualified institutional investors or financial
intermediaries are  made through  RMA  or BSA  brokerage  accounts. RMA  or  BSA
brokerage accounts are
 
                                       10
 

<PAGE>
<PAGE>
established   for  those  Fund  investors  who   are  not  already  RMA  or  BSA
participants. Investors may purchase  shares of any  Fund through the  automatic
investment  ('sweep') of credit balances in  their RMA or BSA brokerage accounts
or  by  placing   orders  with  their   PaineWebber  Investment  Executives   or
correspondent  firms and  wiring federal funds  into their RMA  or BSA brokerage
accounts. Investors who are not participants  in the RMA or BSA programs  should
consult  their  PaineWebber  Investment Executives  or  correspondent  firms for
information on how to purchase Fund shares.
 
     THE RMA AND BSA PROGRAMS. RMA and BSA participants who qualify to  purchase
Fund  shares are asked to select one  of the Funds as their designated portfolio
('Primary Sweep Money Fund'). As described  below, investors will have all  free
credit  cash  balances  (including  balances resulting  from  the  proceeds from
securities sold) of  $1 or more  in the  account invested in  the Primary  Sweep
Money  Fund. Unless the investor otherwise  specifies, all Fund shares purchased
through an RMA or BSA account will be Institutional shares.
 
     Investors who choose one  Fund as their Primary  Sweep Money Fund may  also
purchase  shares  of another  Fund  by contacting  their  PaineWebber Investment
Executives  or   correspondent   firms.   Minimum   purchase   and   maintenance
requirements, however, may apply to purchases of shares of a Fund other than the
investor's Primary Sweep Money Fund.
 
     Certain  features available to  RMA and BSA  participants are summarized in
the Appendices to the  Statement of Additional Information.  The RMA program  is
more  fully described  in the  brochure, 'Facts  about Your  Resource Management
Account (RMA)'r'' and the  BSA program is more  fully described in the brochure,
'Facts  about Your Business Services Account (BSA)'r'.' The availability of Fund
shares to customers of PaineWebber's correspondent firms varies depending on the
arrangements between PaineWebber and such firms.
 
     RMA and BSA participants may change  their Primary Sweep Money Fund at  any
time  by  notifying  their PaineWebber  Investment  Executives  or correspondent
firms. However, RMA  and BSA  participants may not  have more  than one  Primary
Sweep Money Fund at a time.
 
     PaineWebber  currently charges  an annual  $85 account  charge for  the RMA
program including the Gold MasterCard without  the Bank One Line of Credit.  The
fee for clients who choose the Line of Credit for their Gold MasterCard is $125.
The  annual  account  charge  for  the  BSA  program,  including  the MasterCard
BusinessCard, is  $125 ($165  with a  MasterCard Line  of Credit).  The  account
charges  for these  programs (other than  the $40  fee for the  optional line of
credit) are waived for the institutional  investors that purchase shares of  the
Funds.
 
     PURCHASES  WITH FUNDS HELD  AT PAINEWEBBER. Subject  to satisfying a Fund's
initial minimum  purchase  requirement,  whenever amounts  deposited  by  check,
electronic  funds  transfer  credit  or  wire,  or  proceeds  from  the  sale of
securities, in the investor's RMA or BSA brokerage account result in there being
a free credit  cash balance  of $1 or  more in  that account as  of 12:00  noon,
Eastern  time,  on  a Business  Day,  that  cash balance  will  be automatically
invested in the  Primary Sweep Money  Fund. RMA or  BSA participants wishing  to
invest  amounts transferred in one  of the other Funds  should so instruct their
PaineWebber Investment Executives or correspondent firms.
 
     Free credit cash balances  are established based  upon the availability  of
federal funds in an RMA or BSA brokerage account after all Debits and Charges in
the  account have  been satisfied.  See 'Redemptions  -- Automatic Redemptions.'
Federal funds normally are available for cash balances arising from the sale  of
securities  held in a brokerage  account as of 12:00  noon, Eastern time, on the
Business Day  following settlement,  but  in some  cases availability  can  take
longer.
 
     PURCHASES  BY  CHECK  OR  ELECTRONIC FUNDS  TRANSFER  CREDIT.  RMA  and BSA
participants may purchase Fund  shares by depositing  into their account  checks
drawn  on a  U.S. bank.  The RMA or  BSA participant's  brokerage account number
should be included on the check.
 
     As noted above,  when the availability  of federal funds  from deposits  of
checks in an RMA or BSA participant's brokerage account results in a free credit
cash  balance of $1 or more  as of 12:00 noon, Eastern  time, on a Business Day,
that free credit balance will be automatically invested in shares of the Primary
Sweep Money Fund. Federal funds  are deemed available to  a Fund by 12:00  noon,
Eastern  time, two  Business Days  after deposit of  a personal  check and/or an
Electronic Funds Transfer credit initiated  by PaineWebber and one Business  Day
after
 
                                       11
 

<PAGE>
<PAGE>
deposit  of a  cashier's or  certified check.  PaineWebber may  benefit from the
temporary use of the proceeds of  personal checks and Electronic Funds  Transfer
credits  to the extent those funds are  converted to federal funds in fewer than
two Business Days.
 
     PURCHASES BY WIRE. RMA  and BSA participants may  purchase shares of  their
Primary  Sweep Money Fund or another Fund by instructing their banks to transfer
federal funds by  wire to their  RMA or  BSA account. Wire  transfers should  be
directed  to:  The  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. PaineWebber  and/or an investor's
bank may impose a service charge for wire transfers.
 
     If an  investor places  an order  to purchase  Fund shares  by 12:00  noon,
Eastern  time, on  a Business Day  and wire  transfer of federal  funds into the
investor's RMA or BSA brokerage account is received by 4:00 p.m., Eastern  time,
on that Business Day, the purchase of the Fund's shares will be effected on that
Business  Day. Otherwise, the order  will be executed as  of 12:00 noon, Eastern
time, the following  Business Day if  federal funds have  been received by  that
time.
 
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 that are received before 12:00 noon, Eastern time,
normally  is made on the  same Business Day. 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.
 
     AUTOMATIC  REDEMPTIONS. Under  the RMA  and BSA  programs, PaineWebber will
redeem Fund shares automatically to satisfy outstanding 'Debits' and  'Charges.'
'Debits' are amounts due PaineWebber on settlement date for securities purchases
and  other  debits in  the investor's  RMA or  BSA brokerage  account, including
margin loans, any federal funds wires arranged by PaineWebber and fees for  such
wires  and PaineWebber checks and fees for such checks. 'Charges' are RMA or BSA
checks, MasterCard purchases,  cash advances.  Bill Payment  Service checks  and
Automated  Clearing House transfers including  Electronic Funds Transfer Debits.
Shares are redeemed to cover  Debits on the day  the Debit is generated.  Shares
are  redeemed to cover RMA or BSA checks and MasterCard cash advances on the day
they are paid. Shares are redeemed to  cover MasterCard purchases at the end  of
the  MasterCard  monthly  billing  period. Shares  are  also  redeemed  to cover
interest due on and credit extended and  outstanding under the Bank One Line  of
Credit  at the end of the MasterCard monthly billing cycle. Securities purchases
are automatically paid for on settlement date. Fund shares will not be purchased
until all Debits and Charges in a shareholder's RMA or BSA brokerage account are
satisfied.
 
     ADDITIONAL INFORMATION ON  REDEMPTIONS. Shareholders  with questions  about
redemption  requirements should consult  their PaineWebber Investment Executives
or correspondent firms. Shareholders  who redeem all  their shares will  receive
cash  credits to  their RMA  or BSA brokerage  accounts for  dividends earned on
those shares to (but not including) the day of redemption. The redemption  price
may  be more or less  than the purchase price, depending  on the market value of
the Fund's portfolio; however,  each Fund anticipates that  its net asset  value
per share will normally be $1.00 per share. See 'Valuation of Shares.'
 
     PaineWebber  has the right to terminate an RMA or BSA brokerage account for
any reason. In such event, all Fund shares held in the shareholder's RMA or  BSA
brokerage  account will  be redeemed  and the  proceeds sent  to the shareholder
within three Business Days.
 
     ADDITIONAL INFORMATION ON FINANCIAL INTERMEDIARY SHARES. Each Fund's shares
are sold and
 
                                       12
 

<PAGE>
<PAGE>
redeemed without  charge by  the Fund.  Financial intermediaries  purchasing  or
holding  Financial Intermediary  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.
The dividends payable to beneficial owners of Financial Intermediary shares will
be  reduced by  the amount of  fees paid  by a Fund  to financial intermediaries
through  which   those   shares  are   purchased   and  held.   See   '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.
 
VALUATION OF SHARES
 
     Each  Fund uses its best  efforts to maintain its  net asset value at $1.00
per share. Each Fund's net asset value  per share is determined by dividing  the
value of its investments and other assets minus its liabilities by the number of
Fund  shares outstanding.  Each Fund's net  asset value is  determined once each
Business Day at 12:00 noon, Eastern time.
 
     Each Fund values its portfolio  securities using the amortized cost  method
of  valuation,  under  which  market value  is  approximated  by  amortizing the
difference between the acquisition cost and  value at maturity of an  instrument
on  a straight-line  basis over  its remaining  life. All  cash, receivables and
current payables are  carried at their  face value. Other  assets are valued  at
fair  value as determined in good faith by or under the direction of the Trust's
board of trustees.
 
DIVIDENDS AND TAXES
 
     DIVIDENDS. Each Business Day,  each Fund declares as  dividends all of  its
net  investment income. Shares  begin earning dividends on  the day of purchase;
dividends are accrued to shareholder  accounts daily and are automatically  paid
in  additional Fund shares monthly.  Shares do not earn  dividends on the day of
redemption.
 
     Each Fund distributes its net short-term capital gain, if any, annually but
may make more frequent distributions of  such gain if necessary to maintain  its
net asset value per share at $1.00 or to avoid income or excise taxes. The Funds
do  not expect to realize net long-term  capital gain and thus do not anticipate
payment of any long-term capital gain distributions.
 
     FEDERAL TAX. Each Fund  intends to continue to  qualify for treatment as  a
regulated  investment company under the Internal Revenue Code so that it will be
relieved of federal income  tax on that part  of its investment company  taxable
income (consisting generally of taxable net investment income and net short-term
capital gain, if any) that is distributed to its shareholders.
 
     Dividends  paid by the Funds generally are taxable to their shareholders as
ordinary income, notwithstanding that such dividends are paid in additional Fund
shares. Shareholders not subject to tax on their income, however, generally  are
not required to pay tax on amounts distributed to them. The Funds' dividends and
distributions   will  not  qualify  for  the  dividends-received  deduction  for
corporations.
 
     Some states  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, if the Fund meets certain asset and diversification  requirements.
Dividends attributable to earnings on repurchase agreements and securities loans
are, as a general rule, subject to state and local taxation.
 
     Each Fund notifies its shareholders following the end of each calendar year
of  the tax status of all distributions  paid (or deemed paid) during that year.
The notice sent by each Fund specifies the portions of their dividends that  are
attributable  to U.S. Treasury securities and  specific types of U.S. government
securities.
 
     Each Fund is required to withhold  31% of all taxable dividends payable  to
any  individuals  and certain  other noncorporate  shareholders  who (1)  do not
provide the Fund with a correct taxpayer identification number or (2)  otherwise
are subject to backup withholding.
 
     ADDITIONAL  INFORMATION. The  foregoing is  only a  summary of  some of the
important federal, state and local income tax considerations generally affecting
the Funds and their  shareholders; see the  Statement of Additional  Information
for  a  further discussion.  There may  be  other federal,  state and  local tax
considerations
 
                                       13
 

<PAGE>
<PAGE>
applicable to  a  particular investor.  Prospective  shareholders are  urged  to
consult their tax advisers.
 
MANAGEMENT
 
     The   Trust's  board  of  trustees,  as  part  of  its  overall  management
responsibility, oversees various organizations  responsible for the Funds'  day-
to-day management. PaineWebber, the Funds' investment adviser and administrator,
provides  a  continuous  investment program  for  each Fund  and  supervises all
aspects of its operations. As sub-adviser to the Funds, Mitchell Hutchins  makes
and  implements investment  decisions and, as  sub-administrator, is responsible
for the day-to-day administration of the Funds.
 
     PaineWebber receives a monthly fee for these services. For the fiscal  year
ended  April 30,  1996, the effective  advisory and administration  fees paid to
PaineWebber by each Fund  were equal to  0.25% of the  Fund's average daily  net
assets.  PaineWebber has undertaken to  waive 0.05% of its  fees and to maintain
each Fund's total annual operating expenses  at a level not exceeding 0.30%  and
0.55%  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  and expense  reimbursements with  respect to  each  Fund's
Institutional  shares, for  the fiscal year  ended April 30,  1996, Money Market
Fund's, Government  Securities  Fund's  and  Treasury  Securities  Fund's  total
expenses  represented 0.31%, 0.32% and 0.32%, respectively, of their average net
assets. No Financial Intermediary  shares of the  Funds were outstanding  during
that  period. PaineWebber (not the  Funds) pays Mitchell Hutchins  a fee for its
sub-advisory and sub-administration services,  at an annual rate  of 50% of  the
fee  received  by PaineWebber  from each  Fund  for advisory  and administrative
services.
 
     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 is in  turn wholly owned by Paine Webber  Group
Inc.,  a publicly  owned financial services  holding company. At  July 31, 1996,
PaineWebber or Mitchell  Hutchins was  investment adviser or  sub-adviser to  31
registered investment companies with 65 separate portfolios and aggregate assets
in excess of $30 billion.
 
     Mitchell Hutchins 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.
 
     PaineWebber is the distributor of each Fund's shares.
 
FINANCIAL INTERMEDIARIES
 
     Financial intermediaries,  such  as  banks and  savings  associations,  may
purchase  Financial Intermediary shares for the accounts of their customers. 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 0.25%, 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
 
                                       14
 

<PAGE>
<PAGE>
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.
 
PERFORMANCE INFORMATION
 
     From  time  to time  each  Fund may  advertise  its 'yield'  and 'effective
yield.' Both yield figures are based on historical earnings and are not intended
to indicate  future performance.  The 'yield'  of a  Fund is  the income  on  an
investment  in that Fund over a specified  seven-day period. This income is then
'annualized' (that is, assumed to be earned each week over a 52-week period) and
shown as a  percentage of the  investment. The 'effective  yield' is  calculated
similarly,  but when annualized  the income earned is  assumed to be reinvested.
The 'effective yield' will be higher than the 'yield' because of the compounding
effect of this assumed reinvestment.
 
     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.  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.
 
     Each Fund may also advertise other  performance data, which may consist  of
the annual or cumulative return (including realized net short-term capital gain,
if  any)  earned  on  a  hypothetical investment  in  the  Fund  since  it began
operations or  for shorter  periods. This  return  data may  or may  not  assume
reinvestment of dividends (compounding).
 
GENERAL INFORMATION
 
     The  Trust is registered  as an open-end  management investment company and
was organized  as  a  business trust  under  the  laws of  the  Commonwealth  of
Massachusetts by Declaration of Trust dated February 14, 1991. The Trust's board
of  trustees has authority to issue an  unlimited number of shares of beneficial
interest of  separate series,  par value  $0.001 per  share. The  trustees  have
authorized  the  issuance  of Institutional  shares  and  Financial Intermediary
shares of each of the three Funds.
 
     Each share of  a Fund has  equal voting, dividend  and liquidation  rights,
except  that beneficial owners of  Financial Intermediary shares receive certain
services directly from financial intermediaries,  bear certain service fees  and
enjoy exclusive voting rights on matters relating to these services and fees.
 
     The Trust does not hold annual shareholder meetings. There normally will be
no  meetings of shareholders to  elect trustees unless fewer  than a majority of
the trustees holding office have been elected by shareholders.
 
     Shareholders of record of no less than two-thirds of the outstanding shares
of the Trust  may remove  a trustee  by vote cast  in person  or by  proxy at  a
meeting  called for that purpose. The trustees are required to call a meeting of
shareholders of  the Trust  for the  purposes  of voting  upon the  question  of
removal of any trustee when requested in writing to do so by the shareholders of
record of not less than 10% of the Trust's outstanding shares.
 
     The  shares of each Fund will be  voted separately except when an aggregate
vote of all series is required by the Investment Company Act of 1940.  Financial
intermediaries  holding shares for their own accounts must undertake to vote the
shares in the same proportions as the vote of shares held for their customers.
 
     CERTIFICATES. To  avoid  additional  operating expenses  and  for  investor
convenience, share certificates are not issued. Ownership of shares of each Fund
is recorded on a share register by the Transfer Agent, and shareholders have the
 
                                       15
 

<PAGE>
<PAGE>
same rights of ownership with respect to such shares as if certificates had been
issued.
 
     REPORTS.  Shareholders  receive  audited annual  and  unaudited semi-annual
financial statements of the Funds. All purchases and redemptions of Fund  shares
are confirmed to shareholders at least quarterly.
 
     CUSTODIAN  AND TRANSFER  AGENT. State  Street Bank  and Trust  Company, One
Heritage Drive, North Quincy, Massachusetts  02171, is custodian of the  Trust's
assets.  PFPC  Inc.,  a  subsidiary of  PNC  Bank,  National  Association, whose
principal business address is 400 Bellevue Parkway, Wilmington, Delaware  19809,
is the Trust's transfer and dividend disbursing agent.
 
                                       16


<PAGE>
<PAGE>

TABLE OF CONTENTS

Highlights....................................2
Financial Highlights..........................6
Investment Objective and Policies.............8
Purchases....................................10
Redemptions..................................12
Valuation of Shares..........................13
Dividends and Taxes..........................13
Management...................................14
Financial Intermediaries.....................14
Performance Information......................15
General Information..........................15





- ----------------------------------------------
No person has been authorized to give any information or to make any
representations not  contained  in  the  Prospectus  or  in  this  Statement
of Additional  Information in connection  with the offering made by this
Prospectus and, if given or  made, such information or  representations must
not be  relied upon as having been authorized by the Funds or their distributor.
This Prospectus does not  constitute an offering by
the Fund or by the distributor in  any jurisdiction in which offering  may
not lawfully be made.


PaineWebber
'c' 1996 PaineWebber Incorporated


PaineWebber
Prospectus


- -----------------------------------------------
LIQUID
INSTITUTIONAL
RESERVES

MONEY MARKET FUND

GOVERNMENT
SECURITIES FUND

TREASURY
SECURITIES FUND


SEPTEMBER 1, 1996


<PAGE>
<PAGE>
                         LIQUID INSTITUTIONAL RESERVES
                               MONEY MARKET FUND
                           GOVERNMENT SECURITIES FUND
                            TREASURY SECURITIES FUND
 
                          1285 AVENUE OF THE AMERICAS
                            NEW YORK, NEW YORK 10019
 
                      STATEMENT OF ADDITIONAL INFORMATION
 
     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 investment  adviser, administrator  and distributor  of
each  Fund  is  PaineWebber Incorporated  ('PaineWebber');  the  sub-adviser and
sub-administrator of  each  Fund  is Mitchell  Hutchins  Asset  Management  Inc.
('Mitchell  Hutchins'), a wholly owned subsidiary of PaineWebber. This Statement
of Additional  Information  is not  a  prospectus and  should  be read  only  in
conjunction  with the Funds' current Prospectus, dated September 1, 1996. A copy
of the  Prospectus may  be  obtained by  contacting any  PaineWebber  Investment
Executive  or correspondent firm or by calling 1-800-762-1000. This Statement of
Additional Information is dated September 1, 1996, as revised October 1, 1996.
 
                      INVESTMENT POLICIES AND RESTRICTIONS
 
     The following  supplements  the  information contained  in  the  Prospectus
concerning the Funds' investment policies and limitations.
 
     YIELDS  AND RATINGS  OF MONEY MARKET  INVESTMENTS. The yields  on the money
market  instruments  in  which  the  Funds  invest  (such  as  U.S.   government
securities, commercial paper and bank obligations) are dependent on a variety of
factors, including general money market conditions, conditions in the particular
market  for the obligation, the  financial condition of the  issuer, the size of
the offering, the maturity of the obligation  and the ratings of the issue.  The
ratings  of  nationally recognized  statistical rating  organizations ('NRSROs')
represent their opinions as to the quality of the obligations they undertake  to
rate.  Ratings, however, are general and  are not absolute standards of quality.
Consequently, obligations with the same  rating, maturity and interest rate  may
have different market prices. Subsequent to its purchase by a Fund, an issue may
cease  to be rated or its rating may be reduced. In the event that a security in
a Fund's portfolio  ceases to  be a  'First Tier  Security,' as  defined in  the
Prospectus,  or Mitchell Hutchins  becomes aware that a  security has received a
rating below the second  highest rating by any  NRSRO, Mitchell Hutchins or  the
Trust's board of trustees will consider whether the Fund should continue to hold
the  obligation. A  First Tier Security  rated in the  highest short-term rating
category by a single NRSRO at the time of purchase that subsequently receives  a
rating below the highest rating category from a different NRSRO will continue to
be considered a First Tier Security.
 
     REPURCHASE  AGREEMENTS. As stated in the  Prospectus, Money Market Fund may
enter into repurchase agreements with respect to any security in which that Fund
is authorized to invest. The Fund may enter into repurchase agreements with U.S.
banks and dealers  with respect to  any obligation issued  or guaranteed by  the
U.S.  government, its  agencies or  instrumentalities and  also with  respect to
commercial paper, bank  certificates of  deposit and  bankers' acceptances.  The
Fund  maintains custody of the underlying  securities prior to their repurchase;
thus, the obligation  of the  bank or securities  dealer to  pay the  repurchase
price  on the  date agreed  to or  upon demand  is, in  effect, secured  by such
securities. If the value of these securities is less than the repurchase  price,
plus  any agreed-upon additional  amount, the other party  to the agreement must
provide additional collateral so  that at all times  the collateral is at  least
equal  to  the  repurchase price  plus  any agreed-upon  additional  amount. The
difference between  the total  amount  to be  received  upon repurchase  of  the
securities and the price
 

<PAGE>
<PAGE>
that  was paid by the Fund upon  acquisition is accrued as interest and included
in the Fund's net investment income.
     Repurchase agreements  carry  certain  risks  not  associated  with  direct
investments  in securities. Money  Market Fund intends  to enter into repurchase
agreements only  with banks  and dealers  in transactions  believed by  Mitchell
Hutchins   to  present  minimal  credit  risks  in  accordance  with  guidelines
established by the Trust's board of trustees. Mitchell Hutchins will review  and
monitor  the creditworthiness  of those  institutions under  the board's general
supervision.
     ILLIQUID SECURITIES. No Fund will invest more than 10% of its net assets in
illiquid securities.  The  term 'illiquid  securities'  for this  purpose  means
securities  that cannot be disposed of within  seven days in the ordinary course
of business  at  approximately the  amount  at which  the  Fund has  valued  the
securities  and includes, among other  things, repurchase agreements maturing in
more than  seven  days  and  restricted securities  other  than  those  Mitchell
Hutchins  has determined to be liquid  pursuant to guidelines established by the
Trust's board of trustees.
     Not all  restricted  securities  are  illiquid. In  recent  years  a  large
institutional   market  has  developed  for  certain  securities  that  are  not
registered under  the Securities  Act of  1933 ('1933  Act'), including  private
placements,  repurchase  agreements,  commercial paper,  foreign  securities and
corporate bonds and  notes. These  instruments are  often restricted  securities
because  the  securities are  sold in  transactions not  requiring registration.
Institutional investors generally will not seek to sell these instruments to the
general  public,  but  instead  will   often  depend  either  on  an   efficient
institutional market in which such unregistered securities can be readily resold
or  on an issuer's ability to honor  a demand for repayment. Therefore, the fact
that there are contractual or legal restrictions on resale to the general public
or certain institutions is not dispositive of the liquidity of such investments.
     Rule 144A  under  the  1933  Act  establishes  a  'safe  harbor'  from  the
registration  requirements of the 1933 Act  for resales of certain securities to
qualified institutional buyers. Institutional markets for restricted  securities
have  developed as a  result of Rule 144A,  providing both readily ascertainable
values for restricted securities and the  ability to liquidate an investment  in
order to satisfy share redemption orders. Such markets include automated systems
for  the trading, clearance  and settlement of  unregistered securities, such as
the PORTAL System sponsored by  the National Association of Securities  Dealers,
Inc.  An  insufficient number  of qualified  institutional buyers  interested in
purchasing certain restricted  securities held  by Money  Market Fund,  however,
could  affect adversely the marketability of  such portfolio securities, and the
Fund might be  unable to  dispose of such  securities promptly  or at  favorable
prices.
     The board has delegated the function of making day-to-day determinations of
liquidity  to Mitchell Hutchins,  pursuant to guidelines  approved by the board.
Mitchell Hutchins takes into account a  number of factors in reaching  liquidity
decisions,  including  (1) the  frequency of  trades for  the security,  (2) the
number of dealers that make quotes for  the security, (3) the number of  dealers
that  have undertaken to make a market in  the security, (4) the number of other
potential purchasers  and (5)  the nature  of the  security and  how trading  is
effected  (e.g., the time needed to sell  the security, how offers are solicited
and the  mechanics of  transfer). Mitchell  Hutchins monitors  the liquidity  of
restricted  securities  held  by  the Funds  and  reports  periodically  on such
decisions to the board.
     FLOATING RATE  AND  VARIABLE  RATE  DEMAND INSTRUMENTS.  As  noted  in  the
Prospectus,  Money Market  Fund may  invest in  floating rate  and variable rate
securities with demand features.  A demand feature gives  the Fund the right  to
sell the securities back to a specified party, usually a remarketing agent, on a
specified  date, at  a price  equal to their  amortized cost  value plus accrued
interest. A demand  feature is  often backed by  a letter  of credit,  liquidity
support  arrangements or guarantee  from a bank  or other financial institution,
which permits the remarketing  agent to draw  on the letter  of credit or  other
arrangements  on demand,  after specified  notice, for  all or  any part  of the
exercise price of  the demand  feature. Generally,  a Fund  intends to  exercise
demand  features (1) upon a default under  the terms of the underlying security,
(2) to maintain the Fund's portfolio in accordance with its investment objective
and policies or applicable legal or regulatory requirements or (3) as needed  to
provide  liquidity to the Fund in order to meet redemption requests. The ability
of a bank  or other  financial institution to  fulfill its  obligations under  a
letter  of credit or guarantee or other liquidity arrangements might be affected
by possible financial difficulties  of its borrowers,  adverse interest rate  or
economic  conditions, regulatory limitations or other factors. The interest rate
on floating rate  or variable rate  securities ordinarily is  readjusted on  the
basis  of the prime rate of the bank that originated the financing or some other
index
 
                                       2
 

<PAGE>
<PAGE>
or published rate,  such as the  90-day U.S.  Treasury bill rate,  or resets  to
reflect  market rates  of interest.  Generally, these  interest rate adjustments
cause the  market  value  of  floating rate  and  variable  rate  securities  to
fluctuate less than the market value of fixed rate obligations.
 
     WHEN-ISSUED  AND DELAYED DELIVERY SECURITIES.  As stated in the Prospectus,
each Fund  may purchase  securities  on a  'when-issued' or  'delayed  delivery'
basis.  A  security purchased  on  a when-issued  or  delayed delivery  basis is
recorded as an asset on the commitment date and is subject to changes in  market
value,  generally  based upon  changes  in the  level  of interest  rates. Thus,
fluctuation in the value of  the security from the  time of the commitment  date
will  affect  the  Fund's net  asset  value.  When a  Fund  commits  to purchase
securities on a when-issued or delayed delivery basis, its custodian  segregates
assets  to  cover the  amount of  the commitment.  See 'Investment  Policies and
Restrictions -- Segregated Accounts.'
 
     LENDING OF PORTFOLIO SECURITIES. As indicated in the Prospectus, each  Fund
is   authorized  to  lend  up  to  33   1/3%  of  its  portfolio  securities  to
broker-dealers  or  institutional   investors  that   Mitchell  Hutchins   deems
qualified,  but only when the borrower  maintains acceptable collateral with the
Funds' custodian, marked to  market daily, in  an amount at  least equal to  the
market  value of  the securities  loaned, plus  accrued interest  and dividends.
Acceptable collateral  is  limited  to  cash,  U.S.  government  securities  and
irrevocable  letters  of  credit  that meet  certain  guidelines  established by
Mitchell Hutchins. In  determining whether  to lend securities  to a  particular
broker-dealer  of institutional  investor, Mitchell Hutchins  will consider, and
during  the  period  of   the  loan  will  monitor,   all  relevant  facts   and
circumstances,  including the creditworthiness  of the borrower.  The Funds will
retain authority to terminate any loan at any time. The Funds may pay reasonable
administrative and  custodial fees  in connection  with  a loan  and may  pay  a
negotiated  portion  of  the  interest  earned  on  the  cash  or  money  market
instruments held as collateral to the borrower or placing broker. The Funds will
receive reasonable interest  on the loan  or a  flat fee from  the borrower  and
amounts  equivalent to  any dividends,  interest or  other distributions  on the
securities loaned. The Funds will  regain record ownership of loaned  securities
to exercise beneficial rights, such as voting and subscription rights and rights
to  dividends, interest or  other distributions, when  exercising such rights is
considered to be in the Funds' interest.
 
     SEGREGATED ACCOUNTS.  When a  Fund enters  into certain  transactions  that
involve  obligations to  make future  payments to  third parties,  including the
purchase of securities on a when-issued or delayed delivery basis, the Fund will
maintain with  an approved  custodian in  a segregated  account cash  or  liquid
securities,  marked to market daily,  in an amount at  least equal to the Fund's
obligation or commitment under such transactions.
 
     INVESTMENT LIMITATIONS.  The following  fundamental investment  limitations
cannot  be changed with  respect to a  Fund without the  affirmative vote of the
lesser of (1) more than 50% of the outstanding shares of the Fund or (2) 67%  or
more  of the shares present  at a shareholders' meeting if  more than 50% of the
outstanding shares are represented at  the meeting in person  or by proxy. If  a
percentage   restriction  is  adhered  to  at  the  time  of  an  investment  or
transaction, a later increase or decrease in percentage resulting from  changing
values  of portfolio securities or amount of total assets will not be considered
a violation of any of the following limitations.
 
     Each Fund will not:
 
          (1) purchase securities of any one issuer  if, as a result, more  than
              5%  of the Fund's total assets  would be invested in securities of
              that issuer or the  Fund would own  or hold more  than 10% of  the
              outstanding  voting securities of  that issuer, except  that up to
              25% of the Fund's total assets  may be invested without regard  to
              this limitation, and except that this limitation does not apply to
              securities  issued  or  guaranteed  by  the  U.S.  government, its
              agencies and instrumentalities  or to securities  issued by  other
              investment companies.
 
              The  following interpretation  applies to, but  is not  a part of,
              this   fundamental   restriction:   Mortgage-   and   asset-backed
              securities  will not be considered to have been issued by the same
              issuer by reason of  the securities having  the same sponsor,  and
              mortgage- and asset-backed securities issued by a finance or other
              special  purpose subsidiary that are  not guaranteed by the parent
              company will be considered to be issued by a separate issuer  from
              the parent company.
 
                                       3
 

<PAGE>
<PAGE>
          (2) purchase  any security  if, as a  result of that  purchase, 25% or
              more of the Fund's total assets would be invested in securities of
              issuers having  their principal  business activities  in the  same
              industry, except that this limitation does not apply to securities
              issued  or  guaranteed by  the  U.S. government,  its  agencies or
              instrumentalities or to municipal securities or to certificates of
              deposit and  bankers' acceptances  of  domestic branches  of  U.S.
              banks.
 
              The  following interpretation  applies to, but  is not  a part of,
              this fundamental  restriction: With  respect to  this  limitation,
              domestic  and foreign banking  will be considered  to be different
              industries.
 
          (3) issue senior securities or borrow money, except as permitted under
              the Investment Company Act  of 1940 ('1940 Act')  and then not  in
              excess of 33 1/3% of the Fund's total assets (including the amount
              of the senior securities issued but reduced by any liabilities not
              constituting  senior securities)  at the  time of  the issuance or
              borrowing, except that the Fund may borrow up to an additional  5%
              of  its  total  assets  (not including  the  amount  borrowed) for
              temporary or emergency purposes.
          (4) make loans,  except  through  loans  of  portfolio  securities  or
              through  repurchase agreements, provided that for purposes of this
              restriction, the  acquisition  of bonds,  debentures,  other  debt
              securities  or instruments,  or participations  or other interests
              therein and  investments  in  government  obligations,  commercial
              paper,  certificates of  deposit, bankers'  acceptances or similar
              instruments will not be considered the making of a loan.
          (5) engage  in  the  business  of  underwriting  securities  of  other
              issuers, except to the extent that the Fund might be considered an
              underwriter  under the federal securities  laws in connection with
              its disposition of portfolio securities.
          (6) purchase  or  sell  real   estate,  except  that  investments   in
              securities  of issuers that invest  in real estate and investments
              in mortgage-backed  securities, mortgage  participations or  other
              instruments  supported by interests in real estate are not subject
              to this limitation, and except  that the Fund may exercise  rights
              under  agreements relating to such securities, including the right
              to enforce security interests and to hold real estate acquired  by
              reason   of  such  enforcement  until  that  real  estate  can  be
              liquidated in an orderly manner.
          (7) purchase or sell physical commodities unless acquired as a  result
              of  owning  securities or  other  instruments, but  the  Fund many
              purchase, sell  or  enter  into  financial  options  and  futures,
              forward  and spot currency contracts,  swap transactions and other
              financial contracts or derivative instruments.
 
     NON-FUNDAMENTAL   INVESTMENT   RESTRICTIONS.   The   following   investment
restrictions are not fundamental and may be changed by the Trust's board without
shareholder approval.
 
     Each Fund will not:
 
          (1) mortgage,  pledge or  hypothecate any assets  except in connection
              with permitted borrowings or the issuance of senior securities.
          (2) purchase  securities  on  margin,  except  for  short-term  credit
              necessary  for clearance of portfolio transactions and except that
              the Fund may make deposits in connection with its use of financial
              options and  futures, forward  and spot  currency contracts,  swap
              transactions   and   other  financial   contracts   or  derivative
              instruments.
          (3) engage in short sales of securities or maintain a short  position,
              except  that the Fund may (a) sell short 'against the box' and (b)
              maintain short positions in connection  with its use of  financial
              options  and futures,  forward and  spot currency  contracts, swap
              transactions  and   other   financial  contracts   or   derivative
              instruments.
          (4) invest  in oil, gas or mineral exploration or development programs
              or leases, except that investments  in securities of issuers  that
              invest  in such programs or leases and investments in asset-backed
              securities supported by receivables  generated from such  programs
              or leases are not subject to this prohibition.
          (5) invest  in  companies for  the  purpose of  exercising  control or
              management.
          (6) invest in warrants,  valued at  the lower  of cost  or market,  in
              excess  of 5%  of the  value of its  net assets,  which amount may
              include warrants  that  are  not  listed on  the  New  York  Stock
              Exchange  Inc.  ('NYSE')  or the  American  Stock  Exchange, Inc.,
              provided that such unlisted warrants, valued at the lower of  cost
              or market, do not exceed 2% of the Fund's net assets.
 
                                       4


<PAGE>
<PAGE>
                 TRUSTEES AND OFFICERS; PRINCIPAL SHAREHOLDERS
 
     The  trustees and  executive officers  of the  Trust, their  ages, business
addresses and principal occupations during the past five years are:
 
<TABLE>
<CAPTION>
                                         POSITION WITH                      BUSINESS EXPERIENCE;
      NAME AND ADDRESS*; AGE                 TRUST                           OTHER DIRECTORSHIPS
- -----------------------------------  ---------------------  -----------------------------------------------------
<S>                                  <C>                    <C>
Margo N. Alexander**; 49             Trustee and President  Mrs. Alexander is president, chief executive  officer
                                                              and  a director of Mitchell Hutchins (since January
                                                              1995),  and  an  executive  vice  president  and  a
                                                              director   of   PaineWebber.   Mrs.   Alexander  is
                                                              president  and  a   director  or   trustee  of   30
                                                              investment companies for which Mitchell Hutchins or
                                                              PaineWebber serves as investment adviser.
Richard Q. Armstrong; 61                    Trustee         Mr.  Armstrong  is  chairman  and  principal  of  RQA
78 West Brother Drive                                         Enterprises  (management  consulting  firm)  (since
Greenwich, CT 06830                                           April  1991  and principal  occupation  since March
                                                              1995). Mr.  Armstrong is  also  director of  Hi  Lo
                                                              Automotive,  Inc.  He  was chairman  of  the board,
                                                              chief executive officer and co-owner of  Adirondack
                                                              Beverages  (producer and distributor of soft drinks
                                                              and  sparkling/still  waters)  (October  1993-March
                                                              1995).  Mr.  Armstrong  was a  partner  of  The New
                                                              England  Consulting  Group  (management  consulting
                                                              firm)   (December  1992-September   1993).  He  was
                                                              managing director  of LVMH  U.S. Corporation  (U.S.
                                                              subsidiary of the French luxury goods conglomerate,
                                                              Luis    Vuitton    Moet    Hennessey   Corporation)
                                                              (1987-1991) and chairman  of its  wine and  spirits
                                                              subsidiary,    Schieffelin   &   Somerset   Company
                                                              (1987-1991). Mr. Armstrong is a director or trustee
                                                              of  29  investment  companies  for  which  Mitchell
                                                              Hutchins   or  PaineWebber   serves  as  investment
                                                              advisor.
E. Garrett Bewkes, Jr.**; 69         Trustee and Chairman   Mr. Bewkes is a director  of Paine Webber Group  Inc.
                                        of the Board of       ('PW  Group') (holding  company of  PaineWebber and
                                           Trustees           Mitchell Hutchins). Prior to December 1995, he  was
                                                              a  consultant to  PW Group.  Prior to  1988, he was
                                                              chairman  of   the  board,   president  and   chief
                                                              executive officer of American Bakeries Company. Mr.
                                                              Bewkes  is also  a director  of Interstate Bakeries
                                                              Corporation and  NaPro  BioTherapeutics,  Inc.  Mr.
                                                              Bewkes  is a  director or trustee  of 30 investment
                                                              companies   for   which   Mitchell   Hutchins    or
                                                              PaineWebber serves as investment adviser.
</TABLE>
 
                                       5
 

<PAGE>
<PAGE>
<TABLE>
<CAPTION>
                                         POSITION WITH                      BUSINESS EXPERIENCE;
      NAME AND ADDRESS*; AGE                 TRUST                           OTHER DIRECTORSHIPS
- -----------------------------------  ---------------------  -----------------------------------------------------
<S>                                  <C>                    <C>
Richard R. Burt; 49                         Trustee         Mr. Burt is chairman of International Equity Partners
1101 Connecticut Avenue, N.W.                                 (international  investments  and  consulting  firm)
Washington, D.C. 20036                                        (since March  1994) and  a  partner of  McKinsey  &
                                                              Company  (management consulting firm) (since 1991).
                                                              He  is  also  a  director  of  American  Publishing
                                                              Company.   He  was  the  chief  negotiator  in  the
                                                              Strategic Arms  Reduction  Talks  with  the  former
                                                              Soviet Union (1989-1991) and the U.S. Ambassador to
                                                              the  Federal Republic  of Germany  (1985-1989). Mr.
                                                              Burt is  a director  or  trustee of  29  investment
                                                              companies    for   which   Mitchell   Hutchins   or
                                                              PaineWebber serves as investment adviser.
Mary C. Farrell**; 46                       Trustee         Ms. Farrell is a managing director, senior investment
                                                              strategist and  member  of  the  Investment  Policy
                                                              Committee   of  PaineWebber.   Ms.  Farrell  joined
                                                              PaineWebber  in  1982.  She  is  a  member  of  the
                                                              Financial  Women's Association and Women's Economic
                                                              Roundtable and is employed as a regular panelist on
                                                              Wall $treet  Week  with Louis  Rukeyser.  She  also
                                                              serves  on  the  Board  of  Overseers  of  New York
                                                              University's Stern School of Business. Ms.  Farrell
                                                              is a director or trustee of 29 investment companies
                                                              for  which Mitchell Hutchins  or PaineWebber serves
                                                              as investment adviser.
Meyer Feldberg; 54                          Trustee         Mr. Feldberg is Dean  and Professor of Management  of
Columbia University                                           the   Graduate   School   of   Business,   Columbia
101 Uris Hall                                                 University. Prior to 1989, he was president of  the
New York, New York 10027                                      Illinois  Institute of Technology. Dean Feldberg is
                                                              also  a  director   of  AMSCO  International   Inc.
                                                              (medical   instruments  and   supplies),  Federated
                                                              Department Stores Inc. and New World Communications
                                                              Group Incorporated. Dean Feldberg is a director  or
                                                              trustee   of  29  investment  companies  for  which
                                                              Mitchell  Hutchins   or   PaineWebber   serves   as
                                                              investment adviser.
George W. Gowen; 66                         Trustee         Mr. Gowen is a partner in the law firm of Dunnington,
666 Third Avenue                                              Bartholow  & Miller.  Prior to  May 1994,  he was a
New York, New York 10017                                      partner in the law firm of Fryer, Ross & Gowen. Mr.
                                                              Gowen is also  a director of  Columbia Real  Estate
                                                              Investments,  Inc.  Mr.  Gowen  is  a  director  or
                                                              trustee  of  29  investment  companies  for   which
                                                              Mitchell   Hutchins   or   PaineWebber   serves  as
                                                              investment adviser.
</TABLE>
 
                                       6
 

<PAGE>
<PAGE>
<TABLE>
<CAPTION>
                                         POSITION WITH                      BUSINESS EXPERIENCE;
      NAME AND ADDRESS*; AGE                 TRUST                           OTHER DIRECTORSHIPS
- -----------------------------------  ---------------------  -----------------------------------------------------
<S>                                  <C>                    <C>
Frederic V. Malek; 59                       Trustee         Mr. Malek  is  chairman of  Thayer  Capital  Partners
1455 Pennsylvania Avenue, N.W.                                (investment  bank) and a  co- chairman and director
Suite 350                                                     of CB  Commercial Group  Inc. (real  estate).  From
Washington, D.C. 20004                                        January  1992  to  November 1992,  he  was campaign
                                                              manager of Bush-Quayle '92.  From 1990 to 1992,  he
                                                              was  vice chairman and,  from 1989 to  1990, he was
                                                              president of  Northwest  Airlines  Inc.,  NWA  Inc.
                                                              (holding  company of  Northwest Airlines  Inc.) and
                                                              Wings Holdings Inc. (holding company of NWA  Inc.).
                                                              Prior  to  1989, he  was  employed by  the Marriott
                                                              Corporation (hotels, restaurants, airline  catering
                                                              and  contract feeding), where  he most recently was
                                                              an  executive  vice  president  and  president   of
                                                              Marriott  Hotels and  Resorts. Mr. Malek  is also a
                                                              director  of  American  Management  Systems,   Inc.
                                                              (management    consulting    and   computer-related
                                                              services), Automatic Data  Processing, Inc.,  Avis,
                                                              Inc.   (passenger  car  rental),  FPL  Group,  Inc.
                                                              (electric services), National Education Corporation
                                                              and Northwest Airlines Inc. Mr. Malek is a director
                                                              or trustee  of 29  investment companies  for  which
                                                              Mitchell   Hutchins   or   PaineWebber   serves  as
                                                              investment adviser.
Carl W. Schafer; 60                         Trustee         Mr. Schafer is president  of the Atlantic  Foundation
P.O. Box 1164                                                 (charitable foundation supporting mainly
Princeton, NJ 08542                                           oceanographic exploration and research). He also is
                                                              a director of Roadway Express, Inc. (trucking), The
                                                              Guardian Group of Mutual Funds, Evans Systems, Inc.
                                                              (a  motor fuels, convenience  store and diversified
                                                              company), Hidden Lake  Gold Mines Ltd.,  Electronic
                                                              Clearing   House,   Inc.   (financial  transactions
                                                              processing),   Wainoco    Oil    Corporation    and
                                                              Nutraceutix, Inc. (biotechnology company). Prior to
                                                              January  1993,  he was  chairman of  the Investment
                                                              Advisory Committee  of  the Howard  Hughes  Medical
                                                              Institute.  Mr. Schafer is a director or trustee of
                                                              29 investment companies for which Mitchell Hutchins
                                                              or PaineWebber serves as investment adviser.
</TABLE>
 
                                       7
 

<PAGE>
<PAGE>
<TABLE>
<CAPTION>
                                         POSITION WITH                      BUSINESS EXPERIENCE;
      NAME AND ADDRESS*; AGE                 TRUST                           OTHER DIRECTORSHIPS
- -----------------------------------  ---------------------  -----------------------------------------------------
<S>                                  <C>                    <C>
John R. Torell III; 57                      Trustee         Mr. Torell  is  chairman of  Torell  Management  Inc.
767 Fifth Avenue                                              (financial  advisory firm),  chairman of Telesphere
Suite 4605                                                    Corporation  (electronic   provider  of   financial
New York, NY 10153                                            information)  and  a  partner of  Zilkha  & Company
                                                              (merchant banking and private investment  company).
                                                              He  is  the  former  chairman  and  chief executive
                                                              officer   of   Fortune   Bancorp   (1990-1991   and
                                                              1990-1994,   respectively),  the  former  chairman,
                                                              president and  chief executive  officer of  CalFed,
                                                              Inc.  (savings  association)  (1988  to  1989)  and
                                                              former president  of  Manufacturers  Hanover  Corp.
                                                              (bank) (prior to 1988). Mr. Torell is a director of
                                                              American   Home  Products  Corp.,   New  Colt  Inc.
                                                              (armament  manufacturer)   and   Volt   Information
                                                              Services  Inc. Mr. Torell is  a director or trustee
                                                              of  29  investment  companies  for  which  Mitchell
                                                              Hutchins  or  PaineWebber  services  as  investment
                                                              adviser.
Teresa M. Boyle; 37                     Vice President      Ms.   Boyle   is   a   first   vice   president   and
                                                              manager  --  advisory  administration  of  Mitchell
                                                              Hutchins.  Prior   to   November  1993,   she   was
                                                              compliance  manager of Hyperion Capital Management,
                                                              Inc., an investment advisory  firm. Prior to  April
                                                              1993,   Ms.   Boyle  was   a  vice   president  and
                                                              manager  --   legal  administration   of   Mitchell
                                                              Hutchins.  Ms.  Boyle  is a  vice  president  of 30
                                                              investment companies for which Mitchell Hutchins or
                                                              PaineWebber serves as investment adviser.
C. William Maher; 35                  Vice President and    Mr. Maher  is a  first vice  president and  a  senior
                                      Assistant Treasurer     manager  of  the  mutual fund  finance  division of
                                                              Mitchell Hutchins. Mr.  Maher is  a vice  president
                                                              and  assistant treasurer of 30 investment companies
                                                              for which Mitchell  Hutchins or PaineWebber  serves
                                                              as investment adviser.
Dennis McCauley; 49                     Vice President      Mr.   McCauley  is  a  managing  director  and  chief
                                                              investment officer  --  fixed  income  of  Mitchell
                                                              Hutchins.  Prior to December, 1994, he was director
                                                              of fixed income investments of IBM Corporation. Mr.
                                                              McCauley is  a  vice  president  of  19  investment
                                                              companies    for   which   Mitchell   Hutchins   or
                                                              PaineWebber serves as investment adviser.
Susan P. Messina; 36                    Vice President      Ms. Messina is  a senior vice  president of  Mitchell
                                                              Hutchins.   Ms.  Messina  has  been  with  Mitchell
                                                              Hutchins  since  1982.  Ms.   Messina  is  a   vice
                                                              president  of five  investment companies  for which
                                                              Mitchell  Hutchins   or   PaineWebber   serves   as
                                                              investment adviser.
</TABLE>
 
                                       8
 

<PAGE>
<PAGE>
<TABLE>
<CAPTION>
                                         POSITION WITH                      BUSINESS EXPERIENCE;
      NAME AND ADDRESS*; AGE                 TRUST                           OTHER DIRECTORSHIPS
- -----------------------------------  ---------------------  -----------------------------------------------------
<S>                                  <C>                    <C>
Ann E. Moran; 39                      Vice President and    Ms.  Moran is a vice  president of Mitchell Hutchins.
                                      Assistant Treasurer     Ms.  Moran  is  a  vice  president  and   assistant
                                                              treasurer  of  30  investment  companies  for which
                                                              Mitchell  Hutchins   or   PaineWebber   serves   as
                                                              investment adviser.
 
Dianne E. O'Donnell; 44               Vice President and    Ms.  O'Donnell is a senior  vice president and deputy
                                           Secretary          general counsel of Mitchell Hutchins. Ms. O'Donnell
                                                              is a vice president and secretary of 29  investment
                                                              companies    for   which   Mitchell   Hutchins   or
                                                              PaineWebber serves as investment adviser.
 
Victoria E. Schonfeld; 45               Vice President      Ms. Schonfeld  is  a managing  director  and  general
                                                              counsel  of Mitchell  Hutchins. Prior  to May 1994,
                                                              she was  a partner  in  the law  firm of  Arnold  &
                                                              Porter.  Ms. Schonfeld  is a  vice president  of 30
                                                              investment companies for which Mitchell Hutchins or
                                                              PaineWebber serves as investment adviser.
 
Paul H. Schubert; 33                  Vice President and    Mr. Schubert is a first  vice president and a  senior
                                      Assistant Treasurer     manager  of  the  mutual fund  finance  division of
                                                              Mitchell Hutchins. From August 1992 to August 1994,
                                                              he was  a  vice president  of  BlackRock  Financial
                                                              Management,  Inc. Prior  to August 1992,  he was an
                                                              audit manager with Ernst & Young LLP. Mr.  Schubert
                                                              is  a vice president and  assistant treasurer of 30
                                                              investment companies for which Mitchell Hutchins or
                                                              PaineWebber serves as investment adviser.
 
Julian F. Sluyters; 36                Vice President and    Mr. Sluyters  is  a  senior vice  president  and  the
                                           Treasurer          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 30
                                                              investment companies for which Mitchell Hutchins or
                                                              PaineWebber serves as investment adviser.
 
Keith A. Weller; 35                   Vice President and    Mr. Weller is  a first vice  president and  associate
                                      Assistant Secretary     general  counsel of Mitchell Hutchins. Prior to May
                                                              1995, he was an  attorney in private practice.  Mr.
                                                              Weller  is a vice president and assistant secretary
                                                              of  29  investment  companies  for  which  Mitchell
                                                              Hutchins   or  PaineWebber   serves  as  investment
                                                              adviser.
</TABLE>
 
- ------------
 
 * Unless otherwise indicated,  the business  address of each  listed person  is
   1285 Avenue of the Americas, New York, New York 10019.
 
** Mrs.  Alexander, Mr. Bewkes  and Ms. Farrell are  'interested persons' of the
   Trust as defined in the 1940 Act by virtue of their positions with PW  Group,
   PaineWebber and/or Mitchell Hutchins.
 
                                       9
 

<PAGE>
<PAGE>
     The  Trust  pays trustees  who are  not 'interested  persons' of  the Trust
$1,000 annually for each Fund and $150  for each board meeting and each  meeting
of  a board committee (other  than committee meetings held on  the same day as a
board meeting). Messrs. Feldberg and Torell  serve as chairmen of the audit  and
contract  review  committees of  individual  funds within  the  PaineWebber fund
complex and receive  additional annual compensation,  aggregating $15,000,  from
the  relevant funds. Trustees of the  Trust who are 'interested persons' receive
no compensation from  the Funds. All  trustees are reimbursed  for any  expenses
incurred  in attending meetings. Trustees  and officers of the  Trust own in the
aggregate less  than  1% of  the  shares of  each  Fund. Since  PaineWebber  and
Mitchell  Hutchins perform substantially  all of the  services necessary for the
operation of  the  Trust, the  Trust  requires  no employees.  The  table  below
includes certain information relating to the compensation of the Trust's current
trustees  who held office with the Trust or other PaineWebber funds for the last
fiscal and calendar years.
 
<TABLE>
<CAPTION>
                                                                                                TOTAL COMPENSATION
                                                                                                  FROM THE TRUST
                                                                   AGGREGATE COMPENSATION            AND THE
NAME OF PERSONS, POSITION                                              FROM THE TRUST*           FUND COMPLEX`D'
- --------------------------------------------------------------   ---------------------------    ------------------
<S>                                                              <C>                            <C>
Richard Q. Armstrong, Trustee**...............................          --                           $  9,000
Richard R. Burt, Trustee**....................................          --                           $  7,750
Meyer Feldberg, Trustee**.....................................          --                           $106,375
George W. Gowen, Trustee**....................................          --                           $ 99,750
Frederic V. Malek, Trustee**..................................          --                           $ 99,750
Carl W. Schafer, Trustee......................................       $ 4,000                         $118,175
John R. Torell III, Trustee**.................................          --                           $ 28,125
</TABLE>
 
- ------------
Only independent trustees  are compensated  by the Trust  and identified  above;
trustees  who  are 'interested  persons,' as  defined  in the  1940 Act,  do not
receive compensation.
 
 * Represents fees paid to each trustee  during the fiscal year ended April  30,
   1996.
 
** Elected as trustee at a shareholder meeting on April 15, 1996.
 
`D'  Represents total compensation paid to each trustee during the calendar year
     ended  December 31,  1995; no  fund within  the fund  complex has  a bonus,
     pension, profit sharing or retirement plan.
 
             BENEFICIAL OWNERSHIP OF GREATER THAN 5% OF FUND SHARES
 
     To the knowledge of the Trust, the following persons owned of record 5%  or
more of Government Securities Fund's Institutional shares:
 
<TABLE>
<CAPTION>
                                                                  NUMBER AND PERCENTAGE
                                                          OF INSTITUTIONAL SHARES BENEFICIALLY
                 NAME AND ADDRESS*                             OWNED AS OF OCTOBER 1, 1996
- ---------------------------------------------------   ---------------------------------------------
<S>                                                   <C>       
Florida Preferred Risk Self Insurers Fund                         6,339,374.88 (5.9%)
Roger H. Linn and Lois J. Linn                                   15,956,429.32 (14.9%)
National Plus Plan of the Textile Workers Pension
  Fund                                                            6,237,215.97 (5.8%)
Frank Lawrence                                                   14,602,803.33 (13.6%)
Larry S. Lawrence                                                 6,062,975.07 (5.7%)
Stonington Corp.                                                  8,777,946.91 (8.2%)
</TABLE>
 
     To  the knowledge of the Trust, the  following person owned of record 5% or
more of Money Market Fund's Institutional shares:
 
<TABLE>
<CAPTION>
                                                                   NUMBER AND PERCENTAGE
                                                            OF INSTITUTIONAL SHARES BENEFICIALLY
                  NAME AND ADDRESS*                             OWNED AS OF OCTOBER 1, 1996
- -----------------------------------------------------   --------------------------------------------
<S>                                                             <C>           
John C. Crean & Donna S. Crean
  TTEES Crean Family Trust                                         40,587,042.56 (5.4%)
MIM Corporation                                                    40,047,580.78 (5.3%)
Pyramid Venture Inc.                                               51,244,043.10 (6.8%)
</TABLE>
 
                                       10
 

<PAGE>
<PAGE>
     To the knowledge of the Trust, the following persons owned of record 5%  or
more of Treasury Securities Fund's Institutional shares:
 
<TABLE>
<CAPTION>
                                                                  NUMBER AND PERCENTAGE
                                                          OF INSTITUTIONAL SHARES BENEFICIALLY
                 NAME AND ADDRESS*                             OWNED AS OF OCTOBER 1, 1996
- ---------------------------------------------------   ---------------------------------------------
<S>                                                             <C>          
John Edward Campbell TTEE John Edward Campbell
  Trust                                                           2,453,838.92 (7.0%)
John C. Weber
  Cornell Medical Center                                          7,535,031.26 (21.4%)
Randy Lee
  White Bear Lincoln Mercury                                      3,631,509.04 (10.3%)
Macrochem Corp.                                                   5,102,246.95 (14.5%)
</TABLE>
 
     The  Trust is  not aware as  to whether or  to what extent  shares owned of
record also are owned beneficially.
- ------------
* Each shareholder listed  above may  be contacted c/o  Mitchell Hutchins  Asset
  Management Inc., 1285 Avenue of the Americas, New York, NY 10019.
 
                                       11


<PAGE>
<PAGE>
                    INVESTMENT ADVISORY, ADMINISTRATION AND
                           DISTRIBUTION ARRANGEMENTS
 
     INVESTMENT  ADVISORY AND  ADMINISTRATION ARRANGEMENTS.  PaineWebber acts as
the Trust's investment adviser  and administrator pursuant  to a contract  dated
April  13, 1995  ('PaineWebber Contract').  Under the  PaineWebber Contract, the
Trust pays PaineWebber  an annual fee,  computed daily and  paid monthly, at  an
annual rate of 0.25% of each Fund's average daily net assets.
 
     For  the fiscal years  ended April 30,  1996, April 30,  1995 and April 30,
1994, Money  Market  Fund incurred  fees  of $669,836,  $595,984  and  $800,430,
respectively,  to PaineWebber or Kidder Peabody Asset Management, Inc. ('KPAM'),
the Fund's  predecessor  investment  adviser  and  administrator.  During  these
periods,  PaineWebber or KPAM voluntarily waived a  portion of their fees in the
amounts of $102,772, $0  and $0, respectively, and  voluntarily paid other  Fund
expenses  in the amounts  of $59,795, $45,499 and  $3,470, respectively. For the
fiscal years ended April 30, 1996, April 30, 1995 and April 30, 1994, Government
Securities Fund incurred fees of $124,281, $166,715 and $283,281,  respectively,
to  PaineWebber or KPAM.  During these periods,  PaineWebber or KPAM voluntarily
waived a  portion  of  their  fees  in  the  amounts  of  $16,752,  $0  and  $0,
respectively,  and  voluntarily  paid  other Fund  expenses  in  the  amounts of
$105,334, $81,678 and $21,554,  respectively. For the  fiscal years ended  April
30,  1996, April 30, 1995 and April  30, 1994, Treasury Securities Fund incurred
fees of  $62,167, $57,716  and  $47,804 to  PaineWebber  or KPAM.  During  these
periods,  PaineWebber or  KPAM voluntarily waived  their fees in  the amounts of
$7,410, $6,926  and  $40,467,  respectively, and  voluntarily  paid  other  Fund
expenses  in the amounts of $129,447,  $138,518 and $68,730, respectively. As of
the date of this Statement of Additional Information, PaineWebber is voluntarily
waiving .05% of its fee with respect to each Fund.
 
     Under a contract with PaineWebber dated April 15, 1996 ('Mitchell  Hutchins
Contract')  with respect to  the Trust, Mitchell Hutchins  serves as the Trust's
sub-adviser  and  sub-administrator.  Under  the  Mitchell  Hutchins   Contract,
PaineWebber  (not the  Trust) pays Mitchell  Hutchins a fee,  computed daily and
paid monthly,  at  an annual  rate  of 50%  of  the fee  paid  by each  Fund  to
PaineWebber under the PaineWebber Contract.
 
     For  the fiscal year ended April 30, 1996, PaineWebber paid (or accrued) to
Mitchell Hutchins fees of $220,065, $39,863  and $17,551, with respect to  Money
Market   Fund,  Government   Securities  Fund  and   Treasury  Securities  Fund,
respectively.
 
     Under the terms of the PaineWebber  Contract, the Trust bears all  expenses
incurred  in its  operation that  are not  specifically assumed  by PaineWebber.
General expenses  of  the Trust  not  readily  identifiable as  belonging  to  a
specific  Fund  are allocated  among series  by  or under  the direction  of the
Trust's board in  such manner as  the board deems  fair and equitable.  Expenses
borne  by  the  Trust  include  the  following  (or  each  Fund's  share  of the
following): (1) the cost (including brokerage commissions and other  transaction
costs,  if any)  of securities  purchased or  sold by  the Funds  and any losses
incurred in connection therewith, (2) fees  payable to and expenses incurred  on
behalf of the Funds by PaineWebber, (3) organizational expenses, (4) filing fees
and expenses relating to the registration and qualification of the shares of the
Funds under federal and state securities laws and maintaining such registrations
and  qualifications, (5) fees and salaries  payable to the trustees and officers
who are not  interested persons of  the Trust or  PaineWebber, (6) all  expenses
incurred  in connection with the  trustees' services, including travel expenses,
(7) taxes (including any income or  franchise taxes) and governmental fees,  (8)
costs  of any liability,  uncollectable items of deposit  and other insurance or
fidelity bonds, (9) any costs, expenses or losses arising out of a liability  of
or  claim for damages or  other relief asserted against the  Trust or a Fund for
violation of any law,  (10) legal, accounting  and auditing expenses,  including
legal  fees of special counsel for those trustees who are not interested persons
of the Trust, (11) charges of custodians, transfer agents and other agents, (12)
expenses of setting in type  and printing prospectuses and supplements  thereto,
reports   and  statements  to  shareholders  and  proxy  material  for  existing
shareholders, (13)  costs  of  mailing  prospectuses  and  supplements  thereto,
statements  of additional information and supplements thereto, reports and proxy
materials to existing shareholders,  (14) any extraordinary expenses  (including
fees  and disbursements  of counsel, costs  of actions, suits  or proceedings to
which the Trust is a party and the  expenses the Trust may incur as a result  of
its  legal  obligation to  provide  indemnification to  its  officers, trustees,
agents and
 
                                       12
 

<PAGE>
<PAGE>
shareholders) incurred by  a Fund,  (15) fees, voluntary  assessments and  other
expenses   incurred  in   connection  with  membership   in  investment  company
organizations, (16)  costs  of  mailing  and tabulating  proxies  and  costs  of
meetings of shareholders, the board and any committees thereof, (17) the cost of
investment  company literature and  other publications provided  to the trustees
and  officers,  and  (18)  costs  of  mailing,  stationery  and   communications
equipment.
 
     As  required by state regulation, PaineWebber  will reimburse a Fund if and
to the  extent  that  the  aggregate  operating  expenses  of  the  Fund  exceed
applicable  limits for  the fiscal  year. Currently,  the most  restrictive such
limit applicable to each  Fund is 2.5%  of the first $30  million of the  Fund's
average  daily net assets, 2.0% of the next $70 million of its average daily net
assets and 1.5%  of its  average daily  net assets  in excess  of $100  million.
Certain  expenses,  such  as brokerage  commissions,  distribution  fees, taxes,
interest  and  extraordinary  items,  are  excluded  from  this  limitation.  No
reimbursement  pursuant to such limitation was required for the 1996 fiscal year
for any of the Funds.
 
     Under  the  PaineWebber  and  Mitchell  Hutchins  Contracts  (collectively,
'Contracts'),  PaineWebber or Mitchell Hutchins will not be liable for any error
of judgment or mistake of law or for  any loss suffered by a Fund in  connection
with  the performance  of the  Contracts, except  a loss  resulting from willful
misfeasance, bad  faith  or gross  negligence  on  the part  of  PaineWebber  or
Mitchell Hutchins in the performance of its duties or from reckless disregard of
its duties and obligations thereunder.
 
     The  Contracts are terminable with respect to each Fund at any time without
penalty by vote of the Trust's board of trustees or by vote of the holders of  a
majority  of the outstanding voting securities of  that Fund on 60 days' written
notice to PaineWebber or Mitchell Hutchins, as the case may be. The  PaineWebber
Contract  is also terminable without penalty  by PaineWebber on 60 days' written
notice to the Trust,  and the Mitchell Hutchins  Contract is terminable  without
penalty  by PaineWebber or Mitchell  Hutchins on 60 days'  written notice to the
other party. The  Contracts terminate automatically  upon their assignment,  and
the Mitchell Hutchins Contract also terminates automatically upon the assignment
of the PaineWebber Contract.
 
     The  following table shows the approximate net  assets as of July 31, 1996,
sorted by category of  investment objective, of the  investment companies as  to
which  Mitchell Hutchins serves as adviser or sub-adviser. An investment company
may fall into more than one of the categories below.
 
<TABLE>
<CAPTION>
                               INVESTMENT CATEGORY                                  NET ASSETS
- ---------------------------------------------------------------------------------   ----------
                                                                                     ($ MIL)
 
<S>                                                                                 <C>
Domestic (excluding Money Market)................................................   $  5,413.8
Global...........................................................................      2,766.8
Equity/Balanced..................................................................      2,927.3
Fixed Income (excluding Money Market)............................................      5,253.3
     Taxable Fixed Income........................................................      3,620.8
     Tax-Free Fixed Income.......................................................      1,632.5
Money Market Funds...............................................................     21,914.2
</TABLE>
 
     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  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 mutual funds and  other
Mitchell Hutchins advisory clients.
 
     DISTRIBUTION ARRANGEMENTS. PaineWebber acts as distributor of shares of the
Trust under a distribution contract with the Trust dated January 30, 1995, which
requires  PaineWebber  to  use  its  best  efforts,  consistent  with  its other
business, to  sell  shares  of  the  Trust. Shares  of  the  Trust  are  offered
continuously.
 
                                       13
 

<PAGE>
<PAGE>
                             PORTFOLIO TRANSACTIONS
 
     The  Mitchell  Hutchins  Contract authorizes  Mitchell  Hutchins  (with the
approval of  the  Trust's  board)  to select  brokers  and  dealers  to  execute
purchases  and sales  of the Funds'  portfolio securities.  The Contract directs
Mitchell Hutchins to use its best efforts to obtain the best available price and
most favorable execution with respect to all transactions for the Funds. 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 who provide the Funds with research, analysis,
advice  and  similar services.  Although Mitchell  Hutchins may  receive certain
research or execution services in  connection with these transactions,  Mitchell
Hutchins  will not purchase securities at a higher price or sell securities at a
lower price than would otherwise  be paid had no  services been provided by  the
executing  dealer. Moreover, Mitchell Hutchins will  not enter into any explicit
soft dollar arrangements relating to principal transactions and will not receive
in principal transactions the types of services that could be purchased for hard
dollars. Research services furnished  by the dealers with  which a Fund  effects
securities transactions may be used by Mitchell Hutchins in advising other funds
or  accounts it advises and, conversely, research services furnished to Mitchell
Hutchins in  connection with  other  funds or  accounts that  Mitchell  Hutchins
advises may be used in advising the Fund. Information and research received from
dealers  will be in addition to, and not in lieu of, the services required to be
performed by Mitchell Hutchins under the Mitchell Hutchins Contract. During  the
past  three fiscal years, none of the  Funds has paid any brokerage commissions,
nor has any Fund allocated any  transactions to dealers for research,  analysis,
advice and similar services.
 
     Mitchell  Hutchins may  engage in  agency transactions  in over-the-counter
equity and debt securities in return for research and execution services.  These
transactions  are entered into only in  compliance with procedures ensuring that
the transaction (including  commissions) is at  least as favorable  as it  would
have been if effected directly with a market-maker that did not provide research
or  execution  services. These  procedures include  a requirement  that Mitchell
Hutchins obtain multiple quotes from  dealers before executing the  transactions
on an agency basis.
 
     The  Funds purchase portfolio  securities from dealers  and underwriters as
well as from issuers. Securities are usually traded on a net basis with  dealers
acting  as principal for their own  accounts without a stated commission. Prices
paid to dealers in principal transactions generally include a 'spread,' which is
the difference between the prices at which the dealer is willing to purchase and
sell a specific  security at the  time. When securities  are purchased  directly
from  an  issuer, no  commissions  or discounts  are  paid. When  securities are
purchased in underwritten offerings, they include a fixed amount of compensation
to the underwriter.
 
     Investment decisions  for  each  Fund and  for  other  investment  accounts
managed  by Mitchell Hutchins are  made independently of each  other in light of
differing considerations for the various accounts. However, the same  investment
decision  may occasionally be made for a Fund  and one or more of such accounts.
In such cases, simultaneous transactions are inevitable. Purchases or sales  are
then  averaged  as  to price  and  allocated  between the  Fund  and  such other
account(s) as to amount according to a formula deemed equitable to the Fund  and
such  account(s). While  in some  cases this  practice could  have a detrimental
effect upon the price or value of the security as far as the Fund is  concerned,
or  upon its ability to complete its entire order, in other cases it is believed
that coordination and the ability to participate in volume transactions will  be
beneficial to the Fund.
 
     As  of  April  30,  1996,  Money Market  Fund  owned  commercial  paper and
short-term  obligations  issued  by  the  following  issuers  that  are  regular
broker-dealers  for the Fund:  BT Securities Corporation  -- $7,925,660; Goldman
Sachs Group LP -- $12,950,237; Morgan Stanley Group Incorporated -- $14,983,069;
and Nomura Holding America Incorporated -- $15,000,000.
 
                  ADDITIONAL INFORMATION REGARDING REDEMPTIONS
 
     Each Fund may suspend redemption privileges or postpone the date of payment
during any  period (1)  when  the NYSE  is  closed or  trading  on the  NYSE  is
restricted as determined by the SEC, (2) when an emergency exists, as defined by
the  Securities and Exchange  Commission ('SEC'), which  makes it not reasonably
practicable for a  Fund to dispose  of securities  owned by it  or to  determine
fairly the
 
                                       14
 

<PAGE>
<PAGE>
market  value  of  its  assets or  (3)  as  the SEC  may  otherwise  permit. The
redemption price may be more or  less than the shareholder's cost, depending  on
the  market value of the Fund's portfolio  at the time, although each Fund seeks
to maintain a constant net asset value of $1.00 per share.
 
     If conditions exist that make cash payments undesirable, each Fund reserves
the right to honor any request for  redemption by making payment in whole or  in
part  in securities chosen by the Fund and  valued in the same way as they would
be valued for purposes of  computing the Fund's net  asset value. If payment  is
made  in securities,  a shareholder may  incur brokerage  expenses in converting
these securities into cash.  The Trust is obligated  to redeem shares solely  in
cash  up to the lesser of $250,000 or 1% of the net asset value of a Fund during
any 90-day period for one shareholder.
 
                              VALUATION OF SHARES
 
     Each Fund's net asset  value per share is  determined by State Street  Bank
and  Trust Company  ('State Street')  as of  12:00 noon,  eastern time,  on each
Business Day. As  defined in  the Prospectus, 'Business  Day' means  any day  on
which State Street's Boston offices, PaineWebber's New York City offices and the
New  York City offices of PaineWebber's bank, The Bank of New York, are all open
for business. One or more of these institutions will be closed on the observance
of the  following  holidays:  New  Year's Day,  Martin  Luther  King,  Jr.  Day,
Presidents'  Day, Good  Friday, Patriots'  Day, Memorial  Day, Independence Day,
Labor Day, Columbus Day, Veterans' Day, Thanksgiving Day and Christmas Day.
 
     Each Fund values its portfolio securities in accordance with the  amortized
cost  method of valuation  under Rule 2a-7  ('Rule') under the  1940 Act. To use
amortized cost to value its portfolio securities, a Fund must adhere to  certain
conditions under that Rule relating to the Fund's investments, some of which are
discussed  in the Prospectus. Amortized cost is an approximation of market value
of an instrument, whereby the difference between its acquisition cost and  value
at maturity is amortized on a straight-line basis over the remaining life of the
instrument.  The effect of changes in the market value of a security as a result
of fluctuating interest rates is not taken into account, and thus the  amortized
cost  method of valuation may result in the  value of a security being higher or
lower than  its  actual market  value.  In the  event  that a  large  number  of
redemptions  take place  at a  time when interest  rates have  increased, a Fund
might have to sell portfolio  securities prior to maturity  and at a price  that
might not be desirable.
 
     The Trust's board of trustees has established procedures ('Procedures') for
the  purpose of maintaining a constant net asset value of $1.00 per share, which
include a review of the  extent of any deviation of  net asset value per  share,
based  on available market quotations, from  the $1.00 amortized cost per share.
Should that deviation exceed 1/2 of 1% for any Fund, the board of trustees  will
promptly  consider whether any action should be initiated to eliminate or reduce
material dilution  or other  unfair  results to  shareholders. Such  action  may
include  redeeming  shares  in  kind,  selling  portfolio  securities  prior  to
maturity, reducing or withholding dividends and utilizing a net asset value  per
share  as  determined  by  using available  market  quotations.  Each  Fund will
maintain a dollar-weighted  average portfolio maturity  of 90 days  or less  and
will  not purchase  any instrument  with a remaining  maturity of  more than 397
days, will  limit portfolio  investments,  including repurchase  agreements,  to
those  U.S. dollar-denominated  instruments that are  of high  quality under the
Rule and that Mitchell Hutchins,  acting pursuant to the Procedures,  determines
present  minimal  credit  risks,  and will  comply  with  certain  reporting and
recordkeeping procedures. There is  no assurance that  constant net asset  value
per  share will be maintained.  In the event amortized  cost ceases to represent
fair value per share, the board will take appropriate action.
 
     In determining the approximate market value of portfolio investments,  each
Fund  may employ outside organizations, which may use a matrix or formula method
that takes into consideration market  indices, matrices, yield curves and  other
specific  adjustments. This may result in the securities being valued at a price
different from  the price  that would  have been  determined had  the matrix  or
formula method not been used.
 
                                       15
 

<PAGE>
<PAGE>
                                     TAXES
 
     In  order to  continue to qualify  for treatment as  a regulated investment
company under  the Internal  Revenue  Code, each  Fund  must distribute  to  its
shareholders  for  each taxable  year  at least  90%  of its  investment company
taxable income (consisting generally  of taxable net  investment income and  net
short-term  capital gain, if any). With respect to each Fund, these requirements
include the following: (1) the Fund must derive at least 90% of its gross income
each taxable year from dividends, interest, payments with respect to  securities
loans,  gains from the sale or other disposition of securities and certain other
income; (2) the Fund must derive less than 30% of its gross income each  taxable
year  from the sale or other disposition  of securities held for less than three
months; (3) at the close  of each quarter of the  Fund's taxable year, at  least
50% of the value of its total assets must be represented by cash and cash items,
U.S.  government securities  and other  securities, with  these other securities
limited, in respect of any one issuer, to  an amount that does not exceed 5%  of
the  value of the Fund's total  assets; and (4) at the  close of each quarter of
the Fund's taxable year, not more than 25% of the value of its total assets  may
be  invested in  securities (other than  U.S. government securities)  of any one
issuer.
 
                              CALCULATION OF YIELD
 
     Each  Fund  computes  its  yield  and  effective  yield  quotations   using
standardized  methods required by the SEC. The Fund from time to time advertises
(1) its current yield  based on a recently  ended seven-day period, computed  by
determining  the net  change, exclusive  of capital changes,  in the  value of a
hypothetical pre-existing account having a balance of one share at the beginning
of the period, subtracting a hypothetical charge reflecting deductions from that
shareholder account, dividing the difference by the value of the account at  the
beginning  of  the  base period  to  obtain  the base  period  return,  and then
multiplying the base period return by  (365/7), with the resulting yield  figure
carried  to at least the nearest hundredth of one percent, and (2) its effective
yield based on the same seven-day  period by compounding the base period  return
by adding 1, raising the sum to a power equal to (365/7), and subtracting 1 from
the result, according to the following formula:
 
             EFFECTIVE YIELD = [(BASE PERIOD RETURN + 1)'pp'365/7]  - 1
 
     Yield  may fluctuate  daily and  does not  provide a  basis for determining
future yields. Because the yield of each Fund fluctuates, it cannot be  compared
with yields on savings accounts or other investment alternatives that provide an
agreed-to  or guaranteed fixed yield for a stated period of time. However, yield
information may be useful  to an investor  considering temporary investments  in
money  market instruments. In  comparing the yield  of one money  market fund to
another, consideration  should  be given  to  each fund's  investment  policies,
including  the types of investments made,  the average maturity of the portfolio
securities and whether there are any special account charges that may reduce the
yield.
 
     The following yields are for the seven-day period ended July 31, 1996:
 
<TABLE>
<CAPTION>
                                                                                        EFFECTIVE
                                    FUND                                       YIELD      YIELD
- ----------------------------------------------------------------------------   -----    ---------
 
<S>                                                                            <C>      <C>
Money Market Fund...........................................................   5.20 %      5.33%
Government Securities Fund..................................................   5.07 %      5.20%
Treasury Securities Fund....................................................   5.02 %      5.14%
</TABLE>
 
     OTHER INFORMATION. The  Funds' performance data  quoted in advertising  and
other   promotional  materials  ('Performance  Advertisements')  represent  past
performance and are  not intended  to predict  or indicate  future results.  The
return   on  an  investment   in  each  Fund   will  fluctuate.  In  Performance
Advertisements, the Funds may compare their taxable yield with data published by
Lipper Analytical  Services, Inc.  for money  funds ('Lipper'),  CDA  Investment
Technologies,   Inc.   ('CDA'),   IBC/Donoghue's   Money   Market   Fund  Report
('Donoghue'), Wiesenberger  Investment  Companies  Service  ('Wiesenberger')  or
Investment  Company Data  Inc. ('ICD'),  or with  the performance  of recognized
stock and other indexes,  including (but not limited  to) the Standard &  Poor's
500  Composite Stock Price  Index, the Dow Jones  Industrial Average, the Morgan
Stanley Capital International  World Index,  the Lehman  Brothers Treasury  Bond
Index, the Lehman Brothers Government/Corporate Bond Index, the Salomon Brothers
Government  Bond Index and changes  in the Consumer Price  Index as published by
the U.S. Department of Commerce. The Funds  also may refer in such materials  to
mutual
 
                                       16
 

<PAGE>
<PAGE>
fund performance rankings and other data, such as comparative asset, expense and
fee levels, published by Lipper, CDA, Donoghue, Wiesenberger or ICD. Performance
Advertisements also may refer to discussions of the Funds and comparative mutual
fund  data and ratings  reported in independent  periodicals, including (but not
limited to)  THE WALL  STREET JOURNAL,  MONEY MAGAZINE,  FORBES, BUSINESS  WEEK,
FINANCIAL WORLD, BARRON'S, FORTUNE, THE NEW YORK TIMES, THE CHICAGO TRIBUNE, THE
WASHINGTON   POST  and   THE  KIPLINGER  LETTERS.   Comparisons  in  Performance
Advertisements may be in graphic form.
 
     Each Fund may also  compare its performance with  the performances of  bank
certificates  of deposit ('CDs')  as measured by the  CDA Certificate of Deposit
Index and the Bank Rate Monitor National Index and the average of yields of  CDs
of  major banks published by Banxquotes'r'  Money Markets. In comparing a Fund's
performance to CD performance, investors should  keep in mind that bank CDs  are
insured  in whole or in part by an agency of the U.S. government and offer fixed
principal and fixed or variable rates of  interest, and that bank CD yields  may
vary  depending  on the  financial institution  offering  the CD  and prevailing
interest rates. Advertisements and other promotional materials for the Funds  or
for the RMA and BSA programs may compare features of the RMA and BSA programs to
those  offered by bank checking accounts  and other bank accounts. Bank accounts
are insured in  whole or in  part by an  agency of the  U.S. government and  may
offer  a fixed rate of return. Fund shares  are not insured or guaranteed by the
U.S. government and  returns thereon will  fluctuate. While each  Fund seeks  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  may  include discussions  or  illustrations of  the  effects  of
compounding  in  Performance Advertisements.  'Compounding'  refers to  the fact
that, if  dividends  on  a Fund  investment  are  reinvested by  being  paid  in
additional  Fund shares, any future income of the Fund would increase the value,
not only of the original Fund investment, but also of the additional Fund shares
received through reinvestment. As a result, the value of a Fund investment would
increase more quickly than if dividends had been paid in cash.
 
                               OTHER INFORMATION
 
     The Trust  is an  entity of  the type  commonly known  as a  'Massachusetts
business  trust.'  Under Massachusetts  law,  shareholders could,  under certain
circumstances, be  held personally  liable  for the  obligations of  the  Trust.
However,  the Declaration of  Trust disclaims shareholder  liability for acts or
obligations of the Trust and requires that notice of such disclaimer be given in
each note, bond, contract, instrument, certificate or undertaking made or issued
by the trustees or by any  officers or officer by or  on behalf of the Trust,  a
Fund,  the trustees or any of them in connection with the Trust. The Declaration
of Trust provides for indemnification from a Fund's property for all losses  and
expenses  of any shareholder  held personally liable for  the obligations of the
Fund. Thus, the risk of a  shareholder's incurring financial loss on account  of
shareholder  liability is limited to circumstances  in which a Fund itself would
be unable to meet its obligations,  a possibility which PaineWebber believes  is
remote   and  not  material.  Upon  payment  of  any  liability  incurred  by  a
shareholder,  the  shareholder  paying  such  liability  will  be  entitled   to
reimbursement  from  the general  assets  of the  Fund.  The trustees  intend to
conduct the  operations of  each Fund  in such  a way  as to  avoid, as  far  as
possible, ultimate liability of the shareholders for liabilities of the Fund.
 
     COUNSEL.  The law  firm of Kirkpatrick  & Lockhart  LLP, 1800 Massachusetts
Avenue,  N.W.,  Washington,  D.C.  20036,  serves  as  counsel  to  the   Funds.
Kirkpatrick  & Lockhart  LLP also  acts as  counsel to  PaineWebber and Mitchell
Hutchins in connection with other matters.
 
     AUDITORS. Ernst & Young LLP, 787 Seventh Avenue, New York, New York  10019,
serves as independent auditors for the Funds.
 
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)
 
                                       17
 

<PAGE>
<PAGE>
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 to financial
intermediaries $1,694  and  $12,028,  respectively, with  respect  to  Financial
Intermediary  shares of Money Market  Fund. 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 to financial intermediaries $3,715 with
respect to the Financial Intermediary  shares of Government Securities Fund.  No
Financial  Intermediary  shares were  outstanding during  the fiscal  year ended
April 30, 1996. The Trust has not yet made payments to financial  intermediaries
with respect to Financial Intermediary shares of 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
in connection with the  offering of Financial  Intermediary shares. Pursuant  to
the Plan, the board 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 1940 Act and have no direct
or  indirect  financial  interest   in  these  arrangements  (the   'Independent
Trustees').
 
     The   board   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,
including a  majority  of the  Independent  Trustees.  So long  as  the  Trust's
arrangements  with  Financial Intermediaries  are in  effect, the  selection and
nomination of the members of the board  who are not 'interested persons' of  the
Trust,  as defined in the 1940 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 advisers before
investing fiduciary funds in Financial Intermediary shares. See also  'Financial
Intermediaries' in the Prospectus.
 
                              FINANCIAL STATEMENTS
 
     The  Funds' Annual Report  to Shareholders for the  fiscal year ended April
30, 1996  is a  separate document  supplied with  this Statement  of  Additional
Information  and  the financial  statements, accompanying  notes and  reports of
independent  auditors  appearing  therein   are  incorporated  herein  by   this
reference.
 
                                       18


<PAGE>
<PAGE>
                                   APPENDIX A
        SERVICES AVAILABLE THROUGH THE RMA PROGRAM TO RMA ACCOUNTHOLDERS
 
     Shares  of the Funds are available to investors who are Participants in the
Resource Management Account'r'  ('RMA') program offered  by PaineWebber and  its
correspondent  firms.  The  following  is  a summary  of  some  of  the services
available to RMA Participants. For  more complete information, investors  should
refer to their RMA account agreement and the brochure entitled 'Facts About Your
Resource Management Account.'
 
     THE  PAINEWEBBER RMA PREMIER STATEMENT.  RMA Participants receive a monthly
Premier account  statement, which  provides consolidated  information to  assist
with portfolio management decisions and personal financial planning. The Premier
account statement summarizes securities transactions, charges, cash advances and
checks  (if applicable) and provides cost  basis information and calculations of
unrealized and  realized  gains  and  losses on  most  investments.  A  menu  of
customized statement options is available to assist in managing the accounts.
 
     PRELIMINARY  AND  YEAR-END  SUMMARY  STATEMENT.  RMA  Participants  receive
preliminary (nine  month)  summary  information  and  year-end  summary  account
statements  that provide a comprehensive overview of tax-related activity in the
account during the year to help investors with tax planning.
 
     CHOICE OF MONEY  MARKET FUNDS AND  AUTOMATIC SWEEP OF  UNINVESTED CASH.  As
described  more fully in the Prospectus under  the heading 'Purchases -- The RMA
and BSA Programs,' RMA Participants select a money market fund as a primary fund
into which uninvested  cash is  automatically swept on  a daily  basis once  the
minimum  initial purchase is made. By automatically investing cash balances into
a money  market  fund, this  sweep  feature minimizes  the  extent to  which  an
investor's assets remain idle while held in the account pending investment.
 
     CHECK  WRITING. RMA  Participants have ready  access to the  assets held in
their RMA account through the check writing feature. There are no minimum  check
amounts  or per  check charges.  The RMA checks  also include  an expense coding
system that  enables  the  investor to  track  types  of expenses  for  tax  and
financial planning.
 
     DIRECT DEPOSIT. Regular payments from an employer, pension, social security
or  other sources may be eligible  for electronic deposit into RMA Participants'
accounts.
 
     ELECTRONIC  FUNDS  TRANSFER/BILL  PAYMENT  SERVICE.  RMA  Participants  can
electronically   transfer   money  between   their   RMA  and   other  financial
institutions, transfer  funds to  and from  other PaineWebber  accounts and  pay
bills.  Unlimited transfers from other financial accounts and ten free transfers
to  financial  accounts  are  permitted  monthly,  with  a  nominal  charge  per
transaction  thereafter. A Bill  Payment Service is  available for an additional
charge.
 
     GOLD MASTERCARD'r'. RMA  Participants are provided  with a Gold  MasterCard
that  makes account assets easily accessible. The Gold MasterCard is accepted by
businesses, stores and services both in the U.S. and abroad, and can be used  to
obtain  cash advances at thousands of automated  teller machines in the U.S. For
an additional annual fee, investors can also  obtain a line of credit from  Bank
One  that can  be accessed through  their Gold  MasterCard. Through MasterCard's
enhanced MasterAssist'r' and  MasterPurchase'r' programs,  investors can  obtain
other  benefits, including  rental car  insurance, emergency  medical and travel
assistance, legal services and purchase protection.
 
     EXTENDED ACCOUNT PROTECTION. Assets of RMA Participants that are held in an
RMA Account by PaineWebber or one  of its correspondent firms are protected  for
up to $49.5 million through private insurance in the event of the liquidation or
failure  of  the  firm.  This  protection is  in  addition  to  the  $500,000 in
protection provided to  account holders  by the  Securities Investor  Protection
Corporation  ('SIPC'). Neither  the SIPC  protection nor  the additional account
protection insurance applies  to shares  of the  Funds because  such shares  are
registered  directly in  the name  of the  shareholder, and  not in  the name of
PaineWebber or one of its correspondent firms.
 
     THE  PAINEWEBBER  PROTECTOR.  The   PaineWebber  Protector  is  a   popular
convalescent  care insurance program.  Participants can elect  to own $50,000 to
$200,000 of  convalescent  care  benefits.  This feature  is  not  available  to
PaineWebber's correspondent firms.
 
                                      A-1
 

<PAGE>
<PAGE>
    RMA RESOURCE ACCUMULATION PLAN'sm'. The RMA Resource Accumulation Plan is an
automatic mutual  fund investment  program that  provides RMA  participants  the
ability  to purchase shares  of mutual funds  on a regular,  periodic basis. The
minimum purchase in the program is $100 per investment; however, initial minimum
purchase requirements of  the designated mutual  fund(s) must be  met before  an
investor  can  participate  in  this program.  The  participant  must  receive a
prospectus, which  contains more  complete  information (including  charges  and
expenses),  for  each fund  before the  application form  to participate  in the
Resource Accumulation Plan is submitted.
 
     RMA AUTHORIZATION  LIMIT.  RMA  Participants' Authorization  Limit  is  the
combined  amount  of any  uninvested cash  balances in  the account,  money fund
balances  and,  if  applicable,  the   Securities  Credit  Line  (margin).   The
Authorization  Limit is reduced each time a debit is generated in the securities
account, a  security is  purchased, an  RMA  check is  paid, cash  advances  are
obtained  from MasterCard  or when an  electronic transfer/payment  is made. The
Authorization Limit is increased when funds are deposited into their  securities
account.
 
     FINANCIAL  SERVICES CENTER  AND RESOURCELINE'r'. RMA  Participants have day
and night access to  information concerning their RMA  account. This service  is
available  by calling (800)  RMA-1000. RMA representatives  are available at the
Financial Services Center from 8:30 a.m.  to 8:00 p.m. (ET) to answer  inquiries
from Participants regarding their accounts, and ResourceLine, an automated voice
response system, provides 24 hour account information.
 
     SECURITIES  CREDIT LINE. RMA  Participants may choose  to have a Securities
Credit Line (margin) as part of their RMA account.
 
                                      A-2


<PAGE>
<PAGE>
                                   APPENDIX B
       SERVICES AVAILABLE THROUGH THE BSA PROGRAM FOR BSA ACCOUNTHOLDERS
 
     Shares  of the Funds are available to investors who are Participants in the
Business Services Account'r' ('BSA') program. The following is a summary of some
of the  services that  are  available to  BSA  Participants. For  more  complete
information,  investors  should refer  to their  BSA  Account Agreement  and the
brochure entitled 'Facts About Your Business Services Account (BSA).'
 
     PREMIER BUSINESS SERVICES ACCOUNT STATEMENT -- BSA Participants receive the
monthly Premier Business Services Account statement, which provides consolidated
information to assist with portfolio management decisions and business finances.
The  Premier   Business  Services   Account  statement   summarizes   securities
transactions,  charges,  cash advances  and checks  in chronological  order with
running cash  and  money fund  balances.  When applicable,  the  expiration  and
beneficiary  of  outstanding  letters  of  credit  are  printed.  The 'Portfolio
Management' feature provides cost basis  information where available as well  as
calculated  gains and losses on most investments. A menu of customized statement
options is now available to make the monthly reporting more comprehensive.
 
     PRELIMINARY AND  YEAR-END SUMMARY  STATEMENT  -- BSA  Participants  receive
preliminary  (nine  month)  summary  information  and  year-end  summary account
statements that provide a comprehensive overview of tax-related activity in  the
account during the year to help investors plan.
 
     CHOICE  OF MONEY MARKET FUNDS AND AUTOMATIC  SWEEP OF UNINVESTED CASH -- As
described more fully in the Prospectus under the heading 'Purchases--The RMA and
BSA Programs,' BSA  Participants select a  money market fund  as a primary  fund
into  which  uninvested  cash  is  automatically  swept  on  a  daily  basis. By
automatically investing  cash balances  into  a money  market fund,  this  sweep
feature  minimizes the  extent to which  an investor's assets  remain idle while
held in the account pending investment.
 
     CHECK WRITING -- BSA Participants have  ready access to the assets held  in
their  BSA account through the check writing feature. There are no minimum check
amounts. BSA  Participants  may  clear  up to  100  checks  each  month  without
incurring  per check charges.  Participants can order from  a number of business
check styles to suit their check writing  needs. The BSA checks also include  an
expense  code system that enables the  investors to track business expense types
for tax and financial planning.
 
     MASTERCARD BUSINESSCARD'r'  --  BSA Participants  can  elect to  receive  a
MasterCard  BusinessCard  for  easy  access to  account  assets.  The MasterCard
BusinessCard is accepted by businesses,  stores and services worldwide, and  can
be  used to obtain  cash at thousands  of automated teller  machines in the U.S.
Through MasterCard's  enhanced MasterAssist'r'  and MasterPurchase'r'  programs,
investors  can obtain  other benefits  including full  value primary  rental car
insurance, emergency medical and travel assistance, legal services and  purchase
protection.
 
     SECURITIES  CREDIT LINE -- BSA Participants may choose to have a Securities
Credit Line (margin) as part of their BSA account.
 
     EXTENDED ACCOUNT PROTECTION -- Assets of BSA Participants that are held  in
a BSA Account by PaineWebber or one of its correspondent firms are protected for
up to $49.5 million through private insurance in the event of the liquidation or
failure  of  the  firm.  This  protection is  in  addition  to  the  $500,000 in
protection provided  to accountholders  by  the Securities  Investor  Protection
Corporation  ('SIPC'). Neither  the SIPC  protection nor  the additional account
protection insurance applies  to shares  of the  Funds because  such shares  are
registered  directly in  the name  of the  shareholder, and  not in  the name of
PaineWebber or one of its correspondent firms.
 
     BSA AUTHORIZATION LIMIT  -- BSA  Participants' Authorization  Limit is  the
combined  amount  of any  uninvested cash  balances in  the account,  money fund
balances  and,  if  applicable,  the   Securities  Credit  Line  (margin).   The
Authorization  Limit is reduced each time a debit is generated in the securities
account, a  security  is purchased,  a  BSA check  is  paid, cash  advances  are
obtained  from MasterCard  or when an  electronic transfer/payment  is made. The
Authorization Limit is increased when funds are deposited into their  securities
account.
 
     FINANCIAL  SERVICES CENTER AND RESOURCELINE'r' -- BSA Participants can call
the Financial Services  Center at  (800) BSA-0140 from  8:30 a.m.  to 8:00  p.m.
(EST) and speak to a PaineWebber representative
 
                                      B-1
 

<PAGE>
<PAGE>
to  resolve  any  inquiries  about their  accounts.  The  automated ResourceLine
provides basic account information through  a touch-tone phone and is  available
night and day by calling (800) BSA-0140.
 
     ELECTRONIC  FUNDS  TRANSFER/PAYMENT SERVICE  --  BSA Participants  have the
option to initiate transfers of funds to and from their accounts, pay bills  and
process  their payroll  through an  electronic fund  transfer service. Unlimited
transfers  to  the   BSA  from   other  financial  institutions   and  20   free
transfers/payments  out  of  the BSA  are  permitted monthly  with  nominal fees
thereafter. Participants  can  set up  payees  to receive  regular  or  variable
payments simply by calling an 800 number.
 
     DIRECT  DEPOSIT -- Regular  payments from customers,  receivables and other
sources may be eligible for electronic deposit into BSA Participants'  accounts.
This  feature permits the investor's money  to be invested sooner and eliminates
excess paperwork.
 
     LETTERS OF CREDIT --  BSA Participants can have  Standby Letters of  Credit
issued  on their behalf  through PaineWebber at competitive  rates and backed by
securities in their account.
 
                                      B-2


<PAGE>

<PAGE>

                         [This Page Intentially Left Blank]


<PAGE>
<PAGE>
No  person  has  been  authorized  to  give  any  information  or  to  make  any
representations not  contained  in  the  Prospectus  or  in  this  Statement  of
Additional  Information in connection  with the offering  made by the Prospectus
and, if given or  made, such information or  representations must not be  relied
upon as having been authorized by the Funds or their distributor. The Prospectus
and  this Statement of  Additional Information do not  constitute an offering by
the Funds or by the distributor in  any jurisdiction in which such offering  may
not lawfully be made.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                  PAGE
                                                  ----
 
<S>                                               <C>
Investment Policies and Restrictions...........     1
Trustees and Officers; Principal
  Shareholders.................................     5
Investment Advisory, Administration and
  Distribution Arrangements....................    12
Portfolio Transactions.........................    14
Additional Information Regarding Redemptions...    14
Valuation of Shares............................    15
Taxes..........................................    16
Calculation of Yield...........................    16
Other Information..............................    17
Financial Statements...........................    18
Appendix A.....................................   A-1
Appendix B.....................................   B-1
</TABLE>
 
                         LIQUID INSTITUTIONAL RESERVES
 
                                                            MONEY MARKET FUND
                                                   GOVERNMENT SECURITIES FUND
 
                                                     TREASURY SECURITIES FUND
 
                      ----------------------------------------------------------
 
                                             Statement of Additional Information
 
                                                               September 1, 1996
 
                                                    (as revised October 1, 1996)
 


                      ----------------------------------------------------------
 
'c'1996 PaineWebber Incorporated


                              STATEMENT OF DIFFERENCES
                              ------------------------

The copyright symbol shall be expressed as......................... 'c'
The registered trademark symbol shall be expressed as.............. 'r'
The dagger symbol shall be expressed as............................ 'D'
The superscripts shall be preceded by.............................. 'pp'
The service mark shall be expressed as............................. 'sm'




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