PAINEWEBBER INDEX TRUST
497, 1998-10-09
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                        PAINEWEBBER S&P 500 INDEX FUND
 
                          1285 AVENUE OF THE AMERICAS
                           NEW YORK, NEW YORK 10019
 
                      STATEMENT OF ADDITIONAL INFORMATION
 
  PaineWebber S&P 500 Index Fund ("Fund") is a diversified series of
PaineWebber Index Trust ("Trust"), an open-end management investment company
organized as Delaware business trust. The Fund seeks to replicate the total
return of the Standard & Poor's 500 Composite Price Index ("S&P 500 Index"),
before fees and expenses.
 
  Mitchell Hutchins Asset Management Inc. ("Mitchell Hutchins"), a wholly
owned asset management subsidiary of PaineWebber Incorporated ("PaineWebber"),
is the investment adviser, administrator and distributor for the Fund. As
distributor, Mitchell Hutchins has appointed PaineWebber to serve as the
exclusive dealer for the sale of the Fund shares.
 
  This Statement of Additional Information is not a prospectus and should be
read only in conjunction with the Fund's current Prospectus dated October 1,
1998. A copy of the Prospectus may be obtained by calling any PaineWebber
investment executive or correspondent firm. This Statement of Additional
Information is dated October 1, 1998.
 
                     INVESTMENT POLICIES AND RESTRICTIONS
 
  The following supplements the information contained in the Prospectus
concerning the Fund's investment policies and limitations. Except as indicated
in the Prospectus or this Statement of Additional Information, there are no
policy limitations on the Fund's ability to use the investments or techniques
discussed in these documents.
 
  MONEY MARKET INSTRUMENTS. Money market instruments in which the Fund may
invest include: U.S. Treasury bills and other obligations issued or guaranteed
as to interest and principal by the U.S. government, its agencies and
instrumentalities; obligations of U.S. banks (including certificates of
deposit and bankers' acceptances) with total assets in excess of $1.5 billion
at the time of purchase; interest-bearing savings deposits in U.S. commercial
and savings banks with principal amounts not greater than are fully insured by
the Federal Deposit Insurance Corporation (the aggregate amount of these
deposits may not exceed 5% of the value of the Fund's assets); commercial
paper and other short-term corporate obligations; and variable and floating-
rate securities and repurchase agreements. In addition, the Fund may hold cash
and may invest in participation interests in the money market securities
mentioned above without limitation.
 
  SPECIAL CONSIDERATIONS RELATING TO FOREIGN SECURITIES. To the extent the
Fund holds U.S. dollar-denominated securities of foreign issuers, such
securities may not be registered with the Securities and Exchange Commission
("SEC"), nor are the issuers thereof subject to its reporting requirements.
Accordingly, there may be less publicly available information concerning
foreign issuers of securities held by the Fund than is available concerning
U.S. companies. Foreign companies are not generally subject to uniform
accounting, auditing and financial reporting standards or to other regulatory
requirements comparable to those applicable to U.S. companies.
 
  The Fund invests in securities of foreign issuers only if such securities
are traded in the U.S. securities markets directly or through American
Depository Receipts ("ADRs"). Generally, ADRs, in registered form, are
denominated in U.S. dollars and are designed for use in the U.S. securities
markets. ADRs are receipts typically issued by a U.S. bank or trust company
evidencing ownership of the underlying securities. For purposes of the
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Fund's investment policies, ADRs are deemed to have the same classification as
the underlying securities they represent. Thus, an ADR evidencing ownership of
common stock will be treated as common stock.
 
  Investment income and realized gains on certain foreign securities in which
the Fund may invest may be subject to foreign withholding or other taxes that
could reduce the return on these securities. Tax treaties between the United
States and foreign countries, however, may reduce or eliminate the amount of
foreign taxes to which the Fund would be subject.
 
  REPURCHASE AGREEMENTS. Repurchase agreements are transactions in which the
Fund purchases securities or other obligations and simultaneously commits to
resell them to the counterparty 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 obligations. The Fund maintains custody of the
underlying obligations prior to their repurchase, either through its regular
custodian or through a special "tri-party" custodian or subcustodian that
maintains separate accounts for both the Fund and its counterparty. Thus, the
obligation of the counterparty to pay the repurchase price on the date agreed
to or upon demand is, in effect, secured by such obligations. If their value
becomes less than the repurchase price, plus any agreed-upon additional
amount, the counterparty 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 obligations and the price that was paid by the
Fund upon acquisition is accrued as interest and included in its net
investment income.
 
  The Fund intends to enter into repurchase agreements only with
counterparties in transactions believed by Mitchell Hutchins to present
minimal credit risks in accordance with guidelines established by the Trust's
board of trustees ("board").
 
  ILLIQUID SECURITIES. The Fund may invest up to 15% 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, purchased over-the-counter
("OTC") options, repurchase agreements maturing in more than seven days and
restricted securities other than those Mitchell Hutchins has determined are
liquid pursuant to guidelines established by the board. The assets used as
cover for OTC options written by the Fund will be considered illiquid unless
the OTC options are sold to qualified dealers who agree that the Fund may
repurchase any OTC option it writes at a maximum price to be calculated by a
formula set forth in the option agreement. The cover for an OTC option written
subject to this procedure would be considered illiquid only to the extent that
the maximum repurchase price under the formula exceeds the intrinsic value of
the option. To the extent the Fund invests in illiquid securities, it may not
be able readily to liquidate these investments and may have to sell other
investments if necessary to raise cash to meet its obligations.
 
  Restricted securities are not registered under the Securities Act of 1933
("1933 Act") and may be sold only in privately negotiated or other exempted
transactions or after a 1933 Act registration statement has become effective.
Where registration is required, the Fund may be obligated to pay all or part
of the registration expenses and a considerable period may elapse between the
time of the decision to sell and the time the Fund may be permitted to sell a
security under an effective registration statement. If, during such a period,
adverse market conditions were to develop, the Fund might obtain a less
favorable price than prevailed when it decided to sell.
 
  However, not all restricted securities are illiquid. In recent years a large
institutional market has developed for many U.S. and foreign securities that
are not registered under the 1933 Act. 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.
 
  Institutional markets for restricted securities also have developed as a
result of Rule 144A, which establishes a "safe harbor" from the registration
requirements of the 1933 Act for resales of certain securities to qualified
 


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institutional buyers, providing both readily ascertainable values for
restricted securities and the ability to liquidate an investment to satisfy
share redemption orders. Such markets include automated systems for the
trading, clearance and settlement of unregistered securities of domestic and
foreign issuers, such as the PORTAL System sponsored by the National
Association of Securities Dealers, Inc. An insufficient number of qualified
institutional buyers interested in purchasing Rule 144A-eligible restricted
securities held by the 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 in the Fund's portfolio and reports periodically on such
decisions to the board.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund is authorized to lend up to 33
1/3% of its total assets to broker-dealers or institutional investors that
Mitchell Hutchins deems qualified, but only when the borrower maintains
acceptable collateral with the Fund's custodian in an amount, marked to market
daily, 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. The Fund may reinvest cash
collateral in money market instruments or other short-term liquid investments.
In determining whether to lend securities to a particular broker-dealer or
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 Fund will retain authority to terminate
any of its loans at any time. The Fund may pay reasonable fees in connection
with a loan and may pay the borrower or placing broker a negotiated portion of
the interest earned on the reinvestment of cash held as collateral. The Fund
will receive amounts equivalent to any dividends, interest or other
distributions on the securities loaned. The Fund will regain record ownership
of loaned securities to exercise beneficial rights, such as voting and
subscription rights, when regaining such rights is considered to be in the
Fund's interest.
 
  Pursuant to procedures adopted by the board governing the Fund's securities
lending program, PaineWebber has been retained to serve as lending agent for
the Fund. The board also has authorized the payment of fees (including fees
calculated as a percentage of invested cash collateral) to PaineWebber for
these services. The board periodically reviews all portfolio securities loan
transactions for which PaineWebber has acted as lending agent.
 
  WARRANTS. Warrants are securities permitting, but not obligating, their
holder to subscribe for other securities or commodities. Warrants do not carry
with them the right to dividends or voting rights with respect to the
securities that they entitle their holder to purchase, and they do not
represent any rights in the assets of the issuer. As a result, warrants may be
considered more speculative than certain other types of investments. In
addition, the value of a warrant does not necessarily change with the value of
the underlying securities, and a warrant ceases to have value if it is not
exercised prior to its expiration date.
 
  SEGREGATED ACCOUNTS. When the Fund enters into certain transactions to make
future payments to third parties, including the purchase of securities on a
when-issued or delayed delivery basis, it 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. As described below under "Strategies Using Derivative
Instruments," segregated accounts may also be required in connection with
certain transactions involving options and futures contracts.
 
  WHEN-ISSUED AND DELAYED DELIVERY SECURITIES. 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
 
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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 the Fund agrees 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." The Fund purchases when-issued securities only with the
intention of taking delivery, but may sell the right to acquire the security
prior to delivery if Mitchell Hutchins deems it advantageous to do so, which
may result in a gain or loss to the Fund.

 
INVESTMENT LIMITATIONS OF THE FUND
 
  FUNDAMENTAL INVESTMENT LIMITATIONS. The following fundamental investment
limitations cannot be changed for the Fund without the affirmative vote of the
lesser of (a) more than 50% of the outstanding shares of the Fund or (b) 67%
or more of the Fund's shares present at a shareholders' meeting if more than
50% of the outstanding Fund 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 a change in values of portfolio securities or amount of total
assets will not be considered a violation of any of the following limitations.
 
  The 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.
 
    (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 investments in securities issued or
  guaranteed by the U.S. government, its agencies or instrumentalities or to
  municipal securities and provided that the Fund will invest 25% or more of
  its total assets in securities of issuers in the same industry if necessary
  to replicate the weighting of that particular industry in the S&P 500
  Index.
 
    (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.
 
 
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    (7) purchase or sell physical commodities unless acquired as a result of
  owning securities or other instruments, but the Fund may 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 LIMITATIONS. The following investment restrictions are non-
fundamental and may be changed by the vote of the board without shareholder
approval.
 
  The Fund will not:
 
    (1) invest more than 15% of its net assets in illiquid securities, a term
  which 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.
 
    (2) purchase portfolio securities while borrowings in excess of 5% of its
  total assets are outstanding.
 
    (3) purchase securities on margin, except for short-term credit necessary
  for clearance of portfolio transactions and except that the Fund may make
  margin 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.
 
    (4) 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.
 
    (5) purchase securities of other investment companies, except to the
  extent permitted by the 1940 Act or under the terms of an exemptive order
  granted by the SEC and except that this limitation does not apply to
  securities received or acquired as dividends, through offers of exchange,
  or as a result of reorganization, consolidation, or merger.

 
                    STRATEGIES USING DERIVATIVE INSTRUMENTS
 
  GENERAL DESCRIPTION OF DERIVATIVE INSTRUMENTS. Mitchell Hutchins may use a
variety of derivative instruments ("Derivative Instruments"), including
certain options, futures contracts (sometimes referred to as "futures") and
options on futures contracts, to simulate full investment by the Fund in the
S&P 500 Index while retaining a cash balance for Fund management purposes,
such as to provide liquidity to meet anticipated shareholder sales of Fund
shares and for Fund operating expenses. As part of its use of Derivative
Instruments for the Fund's cash management purposes, Mitchell Hutchins may
attempt to reduce the risk of adverse price movements ("hedge") in the
securities in the S&P 500 Index while investing cash received from investor
purchases of Fund shares, to facilitate trading and selling securities to meet
shareholder redemptions. Mitchell Hutchins may also use Derivative Instruments
to reduce transaction costs for the Fund. The Fund may enter into transactions
involving one or more types of Derivative Instruments under which the full
value of its portfolio is at risk. Under normal circumstances, however, the
Fund's use of these derivative contracts will place at risk a much smaller
portion of its assets. The particular Derivative Instruments used by the Fund
are described below.
 
    OPTIONS ON SECURITIES INDEXES--A securities index assigns relative values
  to the securities included in the index and fluctuates with changes in the
  market values of those securities. A securities index option operates in
  the same way as a more traditional securities option, except that exercise
  of a securities index option is effected with cash payment and does not
  involve delivery of securities. Thus, upon exercise of a securities index
  option, the purchaser will realize, and the writer will pay, an amount
  based on the difference between the exercise price and the closing price of
  the securities index.
 
    SECURITIES INDEX FUTURES CONTRACTS--A securities index futures contract
  is a bilateral agreement pursuant to which one party agrees to accept, and
  the other party agrees to make, delivery of an amount of
 
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  cash equal to a specified dollar amount times the difference between the
  securities index value at the close of trading of the contract and the
  price at which the futures contract is originally struck. No physical
  delivery of the securities comprising the index is made. Generally,
  contracts are closed out prior to the expiration date of the contract.
 
    OPTIONS ON FUTURES CONTRACTS--Options on futures contracts are similar to
  options on securities, except that an option on a futures contract gives
  the purchaser the right, in return for the premium, to assume a position in
  a futures contract (a long position if the option is a call and a short
  position if the option is a put), rather than to purchase or sell a
  security, at a specified price at any time during the option term. Upon
  exercise of the option, the delivery of the futures position to the holder
  of the option will be accompanied by delivery of the accumulated balance
  that represents the amount by which the market price of the futures
  contract exceeds, in the case of a call, or is less than, in the case of a
  put, the exercise price of the option on the future. The writer of an
  option, upon exercise, will assume a short position in the case of a call
  and a long position in the case of a put.
 
  GENERAL DESCRIPTION OF STRATEGIES. Hedging strategies can be broadly
categorized as "short hedges" and "long hedges." A short hedge is a purchase
or sale of a Derivative Instrument intended partially or fully to offset
potential declines in the value of one or more investments held in the Fund's
portfolio. Thus, in a short hedge the Fund takes a position in a Derivative
Instrument whose price is expected to move in the opposite direction of the
price of the investment being hedged. For example, the Fund might purchase a
put option on a security to hedge against a potential decline in the value of
that security. If the price of the security declined below the exercise price
of the put, the Fund could exercise the put and thus limit its loss below the
exercise price to the premium paid plus transaction costs. In the alternative,
because the value of the put option can be expected to increase as the value
of the Fund security declines, the Fund might be able to close out the put
option and realize a gain to offset the decline in the value of the security.
 
  Conversely, a long hedge is a purchase or sale of a Derivative Instrument
intended partially or fully to offset potential increases in the acquisition
cost of one or more investments that the Fund intends to acquire. Thus, in a
long hedge, the Fund takes a position in a Derivative Instrument whose price
is expected to move in the same direction as the price of the prospective
investment being hedged. For example, the Fund might purchase a call option on
a security it intends to purchase in order to hedge against an increase in the
cost of the security. If the price of the security increased above the
exercise price of the call, the Fund could exercise the call and thus limit
its acquisition cost to the exercise price plus the premium paid and
transaction costs. Alternatively, the Fund might be able to offset the price
increase by closing out an appreciated call option and realizing a gain.
 
  Derivative Instruments on securities generally are used to hedge against
price movements in one or more particular securities positions that the Fund
owns or intends to acquire. Derivative Instruments on stock indices, in
contrast, generally are used to hedge against price movements in broad equity
market sectors.
 
  Derivative Instruments also can be used to increase or reduce the Fund's
exposure to the stocks in the S&P 500 Index without buying or selling those
securities.
 
  The use of Derivative Instruments is subject to applicable regulations of
the SEC, the several options and futures exchanges upon which they are traded
and the Commodity Futures Trading Commission ("CFTC"). In addition, the Fund's
ability to use Derivative Instruments may be limited by tax considerations.
See "Taxes."
 
  In addition to the products, strategies and risks described below and in the
Prospectus, Mitchell Hutchins expects to discover additional opportunities in
connection with options, futures contracts and other derivative contracts and
hedging techniques. These new opportunities may become available as Mitchell
Hutchins develops new techniques, as regulatory authorities broaden the range
of permitted transactions and as new options, futures contracts, or other
derivative contracts and techniques are developed. Mitchell Hutchins may
utilize these opportunities for the Fund to the extent that they are
consistent with the Fund's investment objective and permitted by its
investment limitations and applicable regulatory authorities. The Fund's
Prospectus or this Statement of Additional Information will be supplemented to
the extent that new products or techniques involve materially different risks
than those described below or in its Prospectus.
 
 
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  SPECIAL RISKS OF STRATEGIES USING DERIVATIVE INSTRUMENTS. The use of
Derivative Instruments involves special considerations and risks, as described
below. Risks pertaining to particular Derivative Instruments are described in
the sections that follow.
 
    (1) There might be imperfect correlation between price movements of a
  Derivative Instrument and price movements of the investments being hedged.
  For example, if the value of a Derivative Instrument used in a short hedge
  increased by less than the decline in value of the hedged investment, the
  hedge would not be fully successful. Such a lack of correlation might occur
  due to factors unrelated to the value of the investments being hedged, such
  as speculative or other pressures on the markets in which Derivative
  Instruments are traded.
 
    The effectiveness of hedges using Derivative Instruments on indices will
  depend on the degree of correlation between price movements in the index
  and price movements in the securities being hedged.
 
    (2) Hedging strategies, if successful, can reduce risk of loss by wholly
  or partially offsetting the negative effect of unfavorable price movements
  in the investments being hedged. However, hedging strategies can also
  reduce opportunity for gain by offsetting the positive effect of favorable
  price movements in the hedged investments. For example, if the Fund entered
  into a short hedge because Mitchell Hutchins projected a decline in the
  price of a security in that Fund's portfolio, and the price of that
  security increased instead, the gain from that increase might be wholly or
  partially offset by a decline in the price of the Derivative Instrument.
  Moreover, if the price of the Derivative Instrument declined by more than
  the increase in the price of the security, the Fund could suffer a loss. In
  either such case, the Fund would have been in a better position had it not
  hedged at all.
 
    (3) As described below, the Fund might be required to maintain assets as
  "cover," maintain segregated accounts or make margin payments when it takes
  positions in Derivative Instruments involving obligations to third parties
  (i.e., Derivative Instruments other than purchased options). If the Fund
  was unable to close out its positions in such Derivative Instruments, it
  might be required to continue to maintain such assets or accounts or make
  such payments until the positions expired or matured. These requirements
  might impair the Fund's ability to sell a portfolio security or make an
  investment at a time when it would otherwise be favorable to do so, or
  require that the Fund sell a portfolio security at a disadvantageous time.
  The Fund's ability to close out a position in a Derivative Instrument prior
  to expiration or maturity depends on the existence of a liquid secondary
  market or, in the absence of such a market, the ability and willingness of
  a contra party to enter into a transaction closing out the position.
  Therefore, there is no assurance that any position can be closed out at a
  time and price that is favorable to the Fund.
 
  COVER FOR STRATEGIES USING DERIVATIVE INSTRUMENTS. Transactions using
Derivative Instruments, other than purchased options, expose the Fund to an
obligation to another party. The Fund will not enter into any such
transactions unless it owns either (1) an offsetting ("covered") position in
securities, other options or futures contracts or (2) cash and liquid
securities, with a value sufficient at all times to cover its potential
obligations to the extent not covered as provided in (1) above. The Fund will
comply with SEC guidelines regarding cover for these transactions and will, if
the guidelines so require, set aside cash or liquid securities in a segregated
account with its custodian in the prescribed amount.
 
  Assets used as cover or held in a segregated account cannot be sold while
the position in the corresponding Derivative Instrument is open, unless they
are replaced with similar assets. As a result, the commitment of a large
portion of the Fund's assets to cover or segregated accounts could impede
portfolio management or the Fund's ability to meet redemption requests or
other current obligations.
 
  OPTIONS. The Fund may purchase put and call options, and write (sell)
covered put or call options on securities on which it is permitted to invest
and indices of those securities. The purchase of call options serves as a long
hedge, and the purchase of put options serves as a short hedge. Writing
covered call options serves as a limited short hedge, because declines in the
value of the hedged investment would be offset to the extent of the premium
received for writing the option. However, if the security appreciates to a
price higher than the exercise price of the call option, it can be expected
that the option will be exercised and the Fund will be obligated to sell
 
                                       7
<PAGE>
 
the security at less than its market value. Writing covered put options serves
as a limited long hedge because increases in the value of the hedged
investment would be offset to the extent of the premium received for writing
the option. However, if the security depreciates to a price lower than the
exercise price of the put option, it can be expected that the put option will
be exercised and the Fund will be obligated to purchase the security at more
than its market value. The securities or other assets used as cover for OTC
options written by the Fund would be considered illiquid to the extent
described under "Investment Policies and Restrictions--Illiquid Securities."
 
  The value of an option position will reflect, among other things, the
current market value of the Fund investment, the time remaining until
expiration, the relationship of the exercise price to the market price of the
Fund investment, the historical price volatility of the Fund investment and
general market conditions. Options normally have expiration dates of up to
nine months. Options that expire unexercised have no value.
 
  The Fund may effectively terminate its right or obligation under an option
by entering into a closing transaction. For example, the Fund may terminate
its obligation under a call or put option that it had written by purchasing an
identical call or put option; this is known as a closing purchase transaction.
Conversely, the Fund may terminate a position in a put or call option it had
purchased by writing an identical put or call option; this is known as a
closing sale transaction. Closing transactions permit the Fund to realize
profits or limit losses on an option position prior to its exercise or
expiration.
 
  The Fund may purchase and write both exchange-traded and OTC options.
Exchange-traded options in the United States are issued by a clearing
organization affiliated with the exchange on which the option is listed which,
in effect, guarantees completion of every exchange-traded option transaction.
In contrast, OTC options are contracts between the Fund and its counterparty
(usually a securities dealer or a bank) with no clearing organization
guarantee. Thus, when the Fund purchases or writes an OTC option, it relies on
the counterparty to make or take delivery of the Fund investment upon exercise
of the option. Failure by the counterparty to do so would result in the loss
of any premium paid by the Fund as well as the loss of any expected benefit of
the transaction.
 
  Generally, the OTC debt options used by the Fund are European-style options.
This means that the option is only exercisable immediately prior to its
expiration. This is in contrast to American-style options, which are
exercisable at any time prior to the expiration date of the option.
 
  The Fund's ability to establish and close out positions in exchange-listed
options depends on the existence of a liquid market. The Fund intends to
purchase or write only those exchange-traded options for which there appears
to be a liquid secondary market. However, there can be no assurance that such
a market will exist at any particular time. Closing transactions can be made
for OTC options only by negotiating directly with the counterparty, or by a
transaction in the secondary market if any such market exists. Although the
Fund will enter into OTC options only with counterparties that are expected to
be capable of entering into closing transactions with the Fund, there is no
assurance that the Fund will in fact be able to close out an OTC option
position at a favorable price prior to expiration. In the event of insolvency
of the counterparty, the Fund might be unable to close out an OTC option
position at any time prior to its expiration.
 
  If the Fund were unable to effect a closing transaction for an option it had
purchased, it would have to exercise the option to realize any profit. The
inability to enter into a closing purchase transaction for a covered put or
call option written by the Fund could cause material losses because the Fund
would be unable to sell the investment used as cover for the written option
until the option expires or is exercised.
 
  LIMITATIONS ON THE USE OF OPTIONS. The use of options is governed by the
following guidelines, which can be changed by the board without shareholder
vote:
 
    (1) The Fund may purchase a put or call option, including any straddle or
  spread, only if the value of its premium, when aggregated with the premiums
  on all other options held by the Fund, does not exceed 5% of its total
  assets.
 
                                       8
<PAGE>
 
    (2) The aggregate value of securities underlying put options written by
  the Fund determined as of the date the put options are written will not
  exceed 50% of its net assets.
 
    (3) The aggregate premiums paid on all options (including options on
  securities, stock indices and options on futures contracts) purchased by
  the Fund that are held at any time will not exceed 20% of its net assets.
 
  FUTURES. The Fund may purchase and sell futures contracts that are related
to securities in which it is permitted to invest, such as securities index
futures contracts. The Fund may also purchase put and call options, and write
covered put and call options, on futures in which it is allowed to invest. The
purchase of futures or call options thereon can serve as a long hedge, and the
sale of futures or the purchase of put options thereon can serve as a short
hedge. Writing covered call options on futures contracts can serve as a
limited short hedge, and writing covered put options on futures contracts can
serve as a limited long hedge, using a strategy similar to that used for
writing covered options on securities or indices.
 
  No price is paid upon entering into a futures contract. Instead, at the
inception of a futures contract the Fund is required to deposit in a
segregated account with its custodian, in the name of the futures broker
through whom the transaction was effected, "initial margin" consisting of
cash, obligations of the United States or obligations that are fully
guaranteed as to principal and interest by the United States, in an amount
generally equal to 10% or less of the contract value. Margin must also be
deposited when writing a call option on a futures contract, in accordance with
applicable exchange rules. Unlike margin in securities transactions, initial
margin on futures contracts does not represent a borrowing, but rather is in
the nature of a performance bond or good-faith deposit that is returned to the
Fund at the termination of the transaction if all contractual obligations have
been satisfied. Under certain circumstances, such as periods of high
volatility, the Fund may be required by an exchange to increase the level of
its initial margin payment, and initial margin requirements might be increased
generally in the future by regulatory action.
 
  Subsequent "variation margin" payments are made to and from the futures
broker daily as the value of the futures position varies, a process known as
"marking to market." Variation margin does not involve borrowing, but rather
represents a daily settlement of the Fund's obligations to or from a futures
broker. When the Fund purchases an option on a future, the premium paid plus
transaction costs is all that is at risk. In contrast, when the Fund purchases
or sells a futures contract or writes a call option thereon, it is subject to
daily variation margin calls that could be substantial in the event of adverse
price movements. If the Fund has insufficient cash to meet daily variation
margin requirements, it might need to sell securities at a time when such
sales are disadvantageous.
 
  Holders and writers of futures positions and options on futures can enter
into offsetting closing transactions, similar to closing transactions on
options, by selling or purchasing, respectively, an instrument identical to
the instrument held or written. Positions in futures and options on futures
may be closed only on an exchange or board of trade that provides a secondary
market. The Fund intends to enter into futures transactions only on exchanges
or boards of trade where there appears to be a liquid secondary market.
However, there can be no assurance that such a market will exist for a
particular contract at a particular time.
 
  Under certain circumstances, futures exchanges may establish daily limits on
the amount that the price of a future or related option can vary from the
previous day's settlement price; once that limit is reached, no trades may be
made that day at a price beyond the limit. Daily price limits do not limit
potential losses because prices could move to the daily limit for several
consecutive days with little or no trading, thereby preventing liquidation of
unfavorable positions.
 
  If the Fund were unable to liquidate a futures or related options position
due to the absence of a liquid secondary market or the imposition of price
limits, it could incur substantial losses. The Fund would continue to be
subject to market risk with respect to the position. In addition, except in
the case of purchased options, the Fund would continue to be required to make
daily variation margin payments and might be required to maintain the position
being hedged by the future or option or to maintain cash or securities in a
segregated account.
 
                                       9
<PAGE>
 
  Certain characteristics of the futures market might increase the risk that
movements in the prices of futures contracts or related options might not
correlate perfectly with movements in the prices of the investments being
hedged. For example, all participants in the futures and related options
markets are subject to daily variation margin calls and might be compelled to
liquidate futures or related options positions whose prices are moving
unfavorably to avoid being subject to further calls. These liquidations could
increase price volatility of the instruments and distort the normal price
relationship between the futures or options and the investments being hedged.
Also, because initial margin deposit requirements in the futures market are
less onerous than margin requirements in the securities markets, there might
be increased participation by speculators in the futures markets. This
participation also might cause temporary price distortions. In addition,
activities of large traders in both the futures and securities markets
involving arbitrage, "program trading" and other investment strategies might
result in temporary price distortions.
 
  LIMITATIONS ON THE USE OF FUTURES AND RELATED OPTIONS. The use of futures
and related options is governed by the following guidelines, which can be
changed by the board without shareholder vote:
 
    (1) To the extent the Fund enters into futures contracts and options on
  futures positions that are not for bona fide hedging purposes (as defined
  by the CFTC), the aggregate initial margin and premiums on those positions
  (excluding the amount by which options are "in-the-money") may not exceed
  5% of its net assets.
 
    (2) The aggregate premiums paid on all options (including options on
  securities, stock indices and options on futures contracts) purchased by
  the Fund that are held at any time will not exceed 20% of its net assets.
 
    (3) The aggregate margin deposits on all futures contracts and options
  thereon held at any time by the Fund will not exceed 5% of its total
  assets.
 
            TRUSTEES AND OFFICERS; PRINCIPAL HOLDERS OF SECURITIES
 
  The trustees and executive officers of the Trust, their ages, business
addresses and principal occupations during the past five years are:
 
<TABLE>
<CAPTION>
 NAME AND ADDRESS*; AGE    POSITION WITH THE TRUST    BUSINESS EXPERIENCE; OTHER DIRECTORSHIPS
 -----------------------   -----------------------    ----------------------------------------
 <S>                      <C>                         <C> 
 Margo N. Alexander**; 51 Trustee and                 Mrs. Alexander is president,
                          President                   chief executive officer and a
                                                      director of Mitchell Hutchins
                                                      (since January 1995) and an 
                                                      executive vice president and a 
                                                      director of PaineWebber (since
                                                      March 1984). Mrs. Alexander is
                                                      president and a director or
                                                      trustee of 32 investment 
                                                      companies for which Mitchell
                                                      Hutchins, PaineWebber or their
                                                      affiliates serve as investment
                                                      adviser.
</TABLE>
 
                                      10
<PAGE>
 
<TABLE>
<CAPTION>
                           
  NAME AND ADDRESS*; AGE   POSITION WITH THE TRUST      BUSINESS EXPERIENCE; OTHER DIRECTORSHIPS                              
  ----------------------   -----------------------      ----------------------------------------
 <S>                      <C>                           <C>
 Richard Q. Armstrong; 63 Trustee                       Mr. Armstrong is chairman and
 One Old Church Road                                    principal of R.Q.A. Enterprises
 Unit #6                                                (management consulting firm)
 Greenwich, CT 06830                                    (since April 1991 and principal
                                                        occupation since March 1995).
                                                        Mr. Armstrong was chairman of
                                                        the board, chief executive of-
                                                        ficer and co-owner of Adiron-
                                                        dack Beverages (producer and
                                                        distributor of soft drinks and
                                                        sparkling/still waters) (Octo-
                                                        ber 1993-March 1995). He was a
                                                        partner of the New England Con-
                                                        sulting Group (management con-
                                                        sulting firm) (December 1992-
                                                        September 1993). He was manag-
                                                        ing director of LVMH U.S. Cor-
                                                        poration (U.S. subsidiary of
                                                        the French luxury goods con-
                                                        glomerate, Louis 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 31 in-
                                                        vestment companies for which
                                                        Mitchell Hutchins, PaineWebber
                                                        or their affiliates serve as
                                                        investment adviser.
 E. Garrett Bewkes,       Trustee and                   Mr. Bewkes is a director of
 Jr.**; 72                Chairman of the               Paine Webber Group Inc. ("PW
                          Board of Trustees             Group") (holding company of
                                                        PaineWebber and Mitchell
                                                        Hutchins). Prior to December
                                                        1995, he was a consultant to PW
                                                        Group. Prior to 1988, he was
                                                        chairman of the board, presi-
                                                        dent and chief executive offi-
                                                        cer of American Bakeries Compa-
                                                        ny. Mr. Bewkes is a director of
                                                        Interstate Bakeries Corpora-
                                                        tion. Mr. Bewkes is a director
                                                        or trustee of 34 investment
                                                        companies for which Mitchell
                                                        Hutchins, PaineWebber or their
                                                        affiliates serve as investment
                                                        adviser.
 Richard R. Burt; 51      Trustee                       Mr. Burt is chairman of IEP Ad-
 1275                                                   visors, Inc. (international in-
 Pennsylvania Ave., N.W.                                vestments and consulting firm)
 Washington, D.C. 20004                                 (since March 1994) and a part-
                                                        ner of McKinsey & Company (man-
                                                        agement consulting firm) (since
                                                        1991). He is also a director of
                                                        Archer-Daniels-Midland Co. (ag-
                                                        ricultural commodities), Hol-
                                                        linger International Co. (pub-
                                                        lishing), Homestake Mining
                                                        Corp., Powerhouse Technologies
                                                        Inc. and Wierton Steel Corp. He
                                                        was the chief negotiator in the
                                                        Strategic Arms Reduction Talks
                                                        with the former Soviet Union
                                                        (1989-1991) and the U.S. Ambas-
                                                        sador to the Federal Republic
                                                        of Germany (1985-1989). Mr.
                                                        Burt is a director or trustee
                                                        of 31 investment companies for
                                                        which Mitchell Hutchins,
                                                        PaineWebber or their affiliates
                                                        serve as investment adviser.
</TABLE>
 
                                       11
<PAGE>
 
<TABLE>
<CAPTION>
                           POSITION WITH THE     BUSINESS EXPERIENCE; OTHER
  NAME AND ADDRESS*; AGE         TRUST                 DIRECTORSHIPS
  ----------------------   -----------------     --------------------------
 <S>                      <C>                 <C>
 Mary C. Farrell**; 48    Trustee             Ms. Farrell is a managing di-
                                              rector, 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 Eco-
                                              nomic Roundtable, and appears
                                              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 31 in-
                                              vestment companies for which
                                              Mitchell Hutchins, PaineWebber
                                              or their affiliates serve as
                                              investment adviser.
 Meyer Feldberg; 56       Trustee             Mr. Feldberg is Dean and Pro-
 Columbia University                          fessor of Management of the
 101 Uris Hall                                Graduate School of Business,
 New York, New York 10027                     Columbia University. Prior to
                                              1989, he was president of the
                                              Illinois Institute of Technolo-
                                              gy. Dean Feldberg is also a di-
                                              rector of Primedia Inc., Feder-
                                              ated Department Stores, Inc.
                                              and Revlon, Inc. Dean Feldberg
                                              is a director or trustee of 33
                                              investment companies for which
                                              Mitchell Hutchins, PaineWebber
                                              or their affiliates serve as
                                              investment adviser.
 George W. Gowen; 69      Trustee             Mr. Gowen is a partner in the
 666 Third Avenue                             law firm of Dunnington,
 New York, New York 10017                     Bartholow & Miller. Prior to
                                              May 1994, he was a partner in
                                              the law firm of Fryer, Ross &
                                              Gowen. Mr. Gowen is a director
                                              or trustee of 31 investment
                                              companies for which Mitchell
                                              Hutchins, PaineWebber or their
                                              affiliates serve as investment
                                              adviser.
 Frederic V. Malek; 61    Trustee             Mr. Malek is chairman of Thayer
 1445 Pennsylvania                            Capital Partners (merchant
 Avenue, N.W.                                 bank). From January 1992 to No-
 Suite 350                                    vember 1992, he was campaign
 Washington, D.C. 20004                       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 North-
                                              west Airlines Inc.) and Wings
                                              Holdings Inc. (holding company
                                              of NWA Inc.). Prior to 1989, he
                                              was employed by the Marriott
                                              Corporation (hotels, restau-
                                              rants, 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), Au-
                                              tomatic Data Processing, Inc.,
                                              CB Commercial Group, Inc. (real
                                              estate services), Choice Hotels
                                              International (hotel and hotel
                                              franchising), FPL Group, Inc.
                                              (electric services), Manor
                                              Care, Inc. (health care), and
                                              Northwest Airlines Inc. Mr.
                                              Malek is a director or trustee
                                              of 31 investment companies for
                                              which Mitchell Hutchins,
                                              PaineWebber or their affiliates
                                              serve as investment adviser.
</TABLE>
 
                                       12
<PAGE>
 
<TABLE>
<CAPTION>
                           POSITION WITH THE     BUSINESS EXPERIENCE; OTHER
  NAME AND ADDRESS*; AGE         TRUST                 DIRECTORSHIPS
  ----------------------   -----------------     --------------------------
 <S>                      <C>                 <C>
 Carl W. Schafer; 62      Trustee             Mr. Schafer is president of the
 66 Witherspoon Street                        Atlantic Foundation (charitable
 #1100                                        foundation supporting mainly
 Princeton, NJ 08542                          oceanographic exploration and
                                              research). He is a director of
                                              Base Ten Systems, Inc. (soft-
                                              ware), Roadway Express, Inc.
                                              (trucking), The Guardian Group
                                              of Mutual Funds, the Harding,
                                              Loevner Funds, Evans Systems,
                                              Inc. (motor fuels, convenience
                                              store and diversified company),
                                              Electronic Clearing House, Inc.
                                              (financial transactions
                                              processing), Frontier Oil Cor-
                                              poration and Nutraceutix, Inc.
                                              (biotechnology). Prior to Janu-
                                              ary 1993, Mr. Schafer was
                                              chairman of the Investment Ad-
                                              visory Committee of the Howard
                                              Hughes Medical Institute. Mr.
                                              Schafer is a director or
                                              trustee of 31 investment compa-
                                              nies for which Mitchell
                                              Hutchins, PaineWebber or their
                                              affiliates serve as investment
                                              adviser.
 T. Kirkham Barneby; 52   Vice President      Mr. Barneby is a managing di-
                                              rector and chief investment of-
                                              ficer--quantitative investments
                                              of Mitchell Hutchins. Prior to
                                              September 1994, he was a senior
                                              vice president at Vantage
                                              Global Management. Mr. Barneby
                                              is a vice president of six in-
                                              vestment companies for which
                                              Mitchell Hutchins, PaineWebber
                                              or their affiliates serve as
                                              investment adviser.
 Lawrence Chinksy; 29     Vice President and  Mr. Chinsky is an assistant
                          Assistant Treasurer vice president and investment
                                              monitoring officer of the mu-
                                              tual fund finance department of
                                              Mitchell Hutchins. Prior to Au-
                                              gust 1997, he was a securities
                                              compliance examiner with the
                                              Office of Compliance, Inspec-
                                              tions and Examinations in the
                                              New York Regional Office of the
                                              SEC. Mr. Chinsky is vice presi-
                                              dent and assistant treasurer of
                                              32 investment companies for
                                              which Mitchell Hutchins,
                                              PaineWebber or their affiliates
                                              serve as investment adviser.
 John J. Lee; 30          Vice President and  Mr. Lee is a vice president and
                          Assistant Treasurer a manager of the mutual fund
                                              finance department of Mitchell
                                              Hutchins. Prior to September
                                              1997, he was an audit manager
                                              in the financial services prac-
                                              tice of Ernst & Young LLP. Mr.
                                              Lee is a vice president and as-
                                              sistant treasurer of 32 invest-
                                              ment companies for which Mitch-
                                              ell Hutchins, PaineWebber or
                                              their affiliates serve as in-
                                              vestment adviser.
</TABLE>
 
                                       13
<PAGE>
 
<TABLE>
<CAPTION>
                           POSITION WITH THE     BUSINESS EXPERIENCE; OTHER
  NAME AND ADDRESS*; AGE         TRUST                 DIRECTORSHIPS
  ----------------------   -----------------     --------------------------
 <S>                      <C>                 <C>
 Ann E. Moran; 41         Vice President and  Ms. Moran is a vice president
                          Assistant Treasurer and a manager of the mutual
                                              fund finance department of
                                              Mitchell Hutchins. Ms. Moran is
                                              a vice president and assistant
                                              treasurer of 32 investment com-
                                              panies for which Mitchell
                                              Hutchins, PaineWebber or their
                                              affiliates serve as investment
                                              adviser.
 Dianne E. O'Donnell; 46  Vice President and  Ms. O'Donnell is a senior vice
                          Secretary           president and deputy general
                                              counsel of Mitchell Hutchins.
                                              Ms. O'Donnell is a vice presi-
                                              dent and secretary of 31 in-
                                              vestment companies and vice
                                              president and assistant secre-
                                              tary of one investment company
                                              for which Mitchell Hutchins,
                                              PaineWebber or their affiliates
                                              serve as investment adviser.
 Emil Polito; 37          Vice President      Mr. Polito is a senior vice
                                              president and director of oper-
                                              ations and control for Mitchell
                                              Hutchins. Mr. Polito is a vice
                                              president of 32 investment com-
                                              panies for which Mitchell
                                              Hutchins, PaineWebber or their
                                              affiliates serve as investment
                                              adviser.
 Victoria E. Schonfeld;   Vice President      Ms. Schonfeld is a managing di-
 47                                           rector 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 presi-
                                              dent of 31 investment companies
                                              and vice president and secre-
                                              tary of one investment company
                                              for which Mitchell Hutchins,
                                              PaineWebber or their affiliates
                                              serve as investment adviser.
 Paul H. Schubert; 35     Vice President and  Mr. Schubert is a senior vice
                          Treasurer           president and the director of
                                              the mutual fund finance depart-
                                              ment of Mitchell Hutchins. From
                                              August 1992 to August 1994, he
                                              was a vice president of Black-
                                              Rock Financial Management L.P.
                                              Mr. Schubert is a vice presi-
                                              dent and treasurer of 32 in-
                                              vestment companies for which
                                              Mitchell Hutchins, PaineWebber
                                              or their affiliates serve as
                                              investment adviser.
</TABLE>
 
 
                                       14
<PAGE>
 
<TABLE>
<CAPTION>
                           POSITION WITH THE     BUSINESS EXPERIENCE; OTHER
  NAME AND ADDRESS*; AGE         TRUST                 DIRECTORSHIPS
  ----------------------   -----------------     --------------------------
 <S>                      <C>                 <C>
 Barney A. Taglialatela;  Vice President and  Mr. Taglialatela is a vice
 37                       Assistant Treasurer president and manager of the
                                              mutual fund finance department
                                              of Mitchell Hutchins. Prior to
                                              February 1995, he was a manager
                                              of the mutual fund finance di-
                                              vision of Kidder Peabody Asset
                                              Management Inc. Mr.
                                              Taglialatela is a vice presi-
                                              dent and assistant treasurer of
                                              32 investment companies for
                                              which Mitchell Hutchins,
                                              PaineWebber or their affiliates
                                              serve as investment adviser.
 Keith A. Weller; 37      Vice President and  Mr. Weller is a first vice
                          Assistant Secretary president and associate 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 31
                                              investment companies for which
                                              Mitchell Hutchins, PaineWebber
                                              or their affiliates serve 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.
 
  The Trust pays trustees who are not "interested persons" of the Trust $1,000
for each series and $150 per series for each board meeting and each meeting of
a board committee (other than committee meetings held on the same day as a
board meeting). The Trust has only one operating series and thus pays each
such trustee $1,000 annually, plus any additional amounts due for board or
committee meetings. Each chairman of the audit and contract review committees
of individual funds within the PaineWebber fund complex receives additional
compensation aggregating $15,000 annually from the relevant funds. All
trustees are reimbursed for any expenses incurred in attending meetings.
Trustees and officers own no outstanding shares of the Fund. Because
PaineWebber and Mitchell Hutchins perform substantially all the services
necessary for the operation of the Trust and the Fund, the Trust requires no
employees. No officer, director or employee of Mitchell Hutchins or
PaineWebber presently receives any compensation from the Trust for acting as a
trustee or officer.
 
  The table below includes certain information related to the compensation of
the Trust's trustees during the initial fiscal period ended May 31, 1998 and
the compensation of those trustees from other PaineWebber funds during the
calendar year ended December 31, 1997.
 
                             COMPENSATION TABLE(1)
 
<TABLE>
<CAPTION>
                                                                       TOTAL
                                                     AGGREGATE     COMPENSATION
                                                   COMPENSATION    FROM THE FUND
NAME OF PERSON, POSITION(1)                      FROM THE TRUST(2)  COMPLEX(3)
- ---------------------------                      ----------------- -------------
<S>                                              <C>               <C>
Richard A. Armstrong, Trustee...................       $400           $94,885
Richard R. Burt, Trustee........................        400            87,085
Meyer Feldberg, Trustee.........................        570           117,853
George W. Gowen, Trustee........................        400           101,567
Frederic V. Malek, Trustee......................        400            95,845
Carl W. Schafer, Trustee........................        400            94,885
</TABLE>
- --------
(1) Only independent members of the board are compensated by the Trust and
    identified above; trustees who are "interested persons," as defined by the
    1940 Act, do not receive compensation.
(2) Represents total compensation paid to each board member during the initial
    fiscal period ended May 31, 1998.
(3) Represents total compensation paid to each trustee during the calendar
    year ended December 31, 1997; no fund within the fund complex has a
    pension or retirement plan.
 
 
                                      15
<PAGE>
 
  PRINCIPAL HOLDERS OF SECURITIES. As of August 31, 1998, the records of the
Trust indicate that PaineWebber owned 69.7% of the Fund's shares. The Trust is
not aware of any other shareholder who is the beneficial owner of 5% or more
of the Fund's shares
 
               INVESTMENT ADVISORY AND DISTRIBUTION ARRANGEMENTS
 
  INVESTMENT ADVISORY ARRANGEMENTS. Mitchell Hutchins acts as the investment
adviser and administrator to the Fund pursuant to a contract (the "Advisory
Contract") with the Trust dated October 14, 1997. Under the Advisory Contract,
the Fund pays Mitchell Hutchins a fee, computed daily and paid monthly, at the
annual rate of 0.20% of average daily net assets.
 
  During the period December 31, 1997 (commencement of operations) to May 31,
1998, Mitchell Hutchins earned advisory fees in the amount of $8,340 (all of
which was waived) from the Fund.
 
  Under the terms of the Advisory Contract, the Fund bears all expenses
incurred in its operation that are not specifically assumed by Mitchell
Hutchins. Expenses borne by the Fund include the following: (1) the cost
(including brokerage commissions) of securities purchased or sold by the Fund
and any losses incurred in connection therewith; (2) fees payable to and
expenses incurred on behalf of the Fund by Mitchell Hutchins; (3)
organizational expenses; (4) filing fees and expenses relating to the
registration and qualification of the Fund's shares under federal and state
securities laws and maintenance of such registrations and qualifications; (5)
fees and salaries payable to trustees and officers who are not interested
persons (as defined in the 1940 Act) of the Trust or Mitchell Hutchins; (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, uncollectible 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 Fund for violation of any law; (10) legal, accounting and
auditing expenses, including legal fees of special counsel for the independent
trustees; (11) charges of custodians, transfer agents and other agents; (12)
costs of preparing share certificates; (13) expenses of setting in type and
printing prospectuses, statements of additional information and supplements
thereto, reports and proxy materials for existing shareholders, and costs of
mailing such materials to shareholders; (14) any extraordinary expenses
(including fees and disbursements of counsel) incurred by the Fund; (15) fees,
voluntary assessments and other expenses incurred in connection with
membership in investment company organizations; (16) costs of 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 trustees and officers; (18) costs of mailing, stationery and
communications equipment; (19) expenses incident to any dividend, withdrawal
or redemption options; (20) charges and expenses of any outside pricing
service used to value portfolio securities; (21) interest on borrowings of the
Fund; and (22) fees or expenses related to license agreements with respect to
securities indices.
 
  Under the Advisory Contract, Mitchell Hutchins will not be liable for any
error of judgment or mistake of law or for any loss suffered by the Fund in
connection with the performance of the Advisory Contract, except a loss
resulting from willful misfeasance, bad faith or gross negligence on the part
of Mitchell Hutchins in the performance of its duties or from reckless
disregard of its duties and obligations thereunder. The Advisory Contract
terminates automatically upon assignment and is terminable at any time without
penalty by the board or by vote of the holders of a majority of the Fund's
outstanding voting securities on 60 days' written notice to Mitchell Hutchins,
or by Mitchell Hutchins on 60 days' written notice to the Fund.
 
                                      16
<PAGE>
 
  NET ASSETS. The following table shows the approximate net assets as of
August 31, 1998, 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>
                                                                      NET ASSETS
   INVESTMENT CATEGORY                                                  $ MIL
   -------------------                                                ----------
   <S>                                                                <C>
   Domestic (excluding Money Market)................................. $ 7,065.7
   Global............................................................   3,506.5
   Equity/Balanced...................................................   5,530.6
   Fixed Income (excluding Money Market).............................   5,058.7
     Taxable Fixed Income............................................   3,474.7
     Tax-Free Fixed Income...........................................   1,584.0
   Money Market Funds................................................  29,448.7

</TABLE>
 
  PERSONNEL TRADING POLICIES. 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 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 funds
and other Mitchell Hutchins advisory clients.
 
  DISTRIBUTION ARRANGEMENTS. Mitchell Hutchins acts as the distributor of each
class of shares of the Fund under separate distribution contracts with the
Trust ("Distribution Contracts") that require Mitchell Hutchins to use its
best efforts, consistent with its other businesses, to sell shares of the
Fund. Shares of the Fund are offered continuously. Under separate exclusive
dealer agreements between Mitchell Hutchins and PaineWebber relating to each
class of shares ("Exclusive Dealer Agreements"), PaineWebber and its
correspondent firms sell the Fund's shares.
 
  Under a plan of distribution pertaining to the Class A shares and Class C
shares adopted by the Trust in the manner prescribed under Rule 12b-1 under
the 1940 Act ("Class A Plan" and "Class C Plan," collectively, "Plans"), the
Fund pays Mitchell Hutchins a service fee, accrued daily and payable monthly,
at the annual rate of 0.25% of the average daily net assets of Class A and
Class C shares of the Fund. Under the Class C Plan, the Fund pays Mitchell
Hutchins a distribution fee, accrued daily and payable monthly at the annual
rate of 0.75% of the average daily net assets of the Class C shares. The Fund
pays Mitchell Hutchins no distribution fees with respect to its Class A
shares. There is no distribution plan with respect to Class Y shares and the
Fund pays no service or distribution fees with respect to its Class Y shares.
 
  Among other things, each Plan provides that (1) Mitchell Hutchins will
submit to the board at least quarterly, and the trustees will review, reports
regarding all amounts expended under the Plan and the purposes for which such
expenditures were made, (2) the Plan will continue in effect only so long as
it is approved at least annually, and any material amendment thereto is
approved, by the board, including those trustees who are not "interested
persons" of the Trust and who have no direct or indirect financial interest in
the operation of the Plan or any agreement related to the Plan, acting in
person at a meeting called for that purpose, (3) payments by the Fund under
the Plan shall not be materially increased without the affirmative vote of the
holders of a majority of the outstanding shares of the relevant class and (4)
while the Plan remains in effect, the selection and nomination of trustees who
are not "interested persons" of the Trust shall be committed to the discretion
of the trustees who are not "interested persons" of the Trust.
 
  In reporting amounts expended under the Plan to the board, Mitchell Hutchins
allocates expenses attributable to the sale of each class of the Fund's shares
to such class based on the ratio of sales of shares of such class to the sales
of all classes of shares. The fees paid by one class of the Fund's shares will
not be used to subsidize the sale of the other class of the Fund's shares.
 
                                      17
<PAGE>
 
  In approving the Fund's overall Flexible PricingSM system of distribution,
the board considered several factors, including that implementation of
Flexible Pricing would (1) enable investors to choose the purchasing option
best suited to their individual situation, thereby encouraging current
shareholders to make additional investments in the Fund and attracting new
investors and assets to the Fund to the benefit of the Fund and its
shareholders, (2) facilitate distribution of the Fund's shares and (3)
maintain the competitive position of the Fund in relation to other funds that
have implemented or are seeking to implement similar distribution
arrangements.
 
  In approving the Class A Plan, the board considered all the features of the
distribution system, including (1) the conditions under which initial sales
charges would be imposed and the amount of such charges, (2) Mitchell
Hutchins' belief that the initial sales charge combined with a service fee
would be attractive to PaineWebber investment executives and correspondent
firms, resulting in greater growth of the Fund than might otherwise be the
case, (3) the advantages to the shareholders of economies of scale resulting
from growth in the Fund's assets and potential continued growth, (4) the
services provided to the Fund and its shareholders by Mitchell Hutchins, (5)
the services provided by PaineWebber pursuant to its Exclusive Dealer
Agreement with Mitchell Hutchins and (6) Mitchell Hutchins' shareholder
service-related expenses and costs.
 
  In approving the Class C Plan, the board considered all the features of the
distribution system, including (1) the advantage to investors in having no
initial sales charges deducted from the Fund purchase payments and instead
having the entire amount of their purchase payments immediately invested in
Fund shares, (2) the advantage to investors in being free from contingent
deferred sales charges upon redemption for shares held more than one year and
paying for distribution on an ongoing basis, (3) Mitchell Hutchins' belief
that the ability of PaineWebber investment executives and correspondent firms
to receive sales compensation for their sales of Class C shares on an ongoing
basis, along with continuing service fees, while their customers invest their
entire purchase payments immediately in Class C shares and generally do not
face contingent deferred sales charges, would prove attractive to the
investment executives and correspondent firms, resulting in greater growth to
the Fund than might otherwise be the case, (4) the advantage to the
shareholders of economies of scale resulting from growth in the Fund's assets
and potential continued growth, (5) the services provided to the Fund and its
shareholders by Mitchell Hutchins, (6) the services provided by PaineWebber
pursuant to its Exclusive Dealer Agreement with Mitchell Hutchins and (7)
Mitchell Hutchins' shareholder service- and distribution-related expenses and
costs. The board members also recognized that Mitchell Hutchins' willingness
to compensate PaineWebber and its investment executives without the
concomitant receipt by Mitchell Hutchins of initial sales charges or
contingent deferred sales charges upon redemption, was conditioned upon its
expectation of being compensated under the Class C Plan.
 
  With respect to each Plan, the board considered all compensation that
Mitchell Hutchins would receive under the Plan and the Distribution Contract,
including service and, as applicable, initial sales charge and distribution
fees. The board also considered the benefits that would accrue to Mitchell
Hutchins under the Plan in that Mitchell Hutchins would receive service and
advisory fees which are calculated based upon a percentage of the average net
assets of the Fund, which would increase if the Plan were successful and the
Fund attained and maintained significant asset levels.
 
                            PORTFOLIO TRANSACTIONS
 
  Subject to policies established by the board, Mitchell Hutchins is
responsible for the execution of the Fund's portfolio transactions and the
allocation of brokerage transactions. In executing portfolio transactions,
Mitchell Hutchins generally seeks to obtain the best net results for the Fund,
taking into account such factors as the price (including the applicable
brokerage commission or dealer spread), size of order, difficulty of execution
and operational facilities of the firm involved. While Mitchell Hutchins
generally seeks reasonably competitive commission rates, payment of the lowest
commission is not necessarily consistent with obtaining the best net results.
Prices paid to dealers in principal transactions, through which some equity
securities and most debt securities are traded, 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. The Fund may invest in
securities traded in the OTC market and will engage primarily in transactions
directly with the dealers who make markets in such securities, unless a better
price or execution could be obtained by using a broker. For the period
December 31, 1997 (commencement of operations) to May 31, 1998, the Fund paid
$4,199 in brokerage commissions.
 
                                      18
<PAGE>
 
  The Fund has no obligation to deal with any broker or group of brokers in
the execution of portfolio transactions. The Fund contemplates that,
consistent with the policy of obtaining the best net results, brokerage
transactions may be conducted through PaineWebber. The board has adopted
procedures in conformity with Rule 17e-1 under the 1940 Act to ensure that all
brokerage commissions paid to PaineWebber are reasonable and fair. Specific
provisions in the Advisory Contract authorize PaineWebber to effect portfolio
transactions for the Fund on a national securities exchange of which it is a
member and to retain compensation in connection with such transactions. Any
such transactions will be effected and related compensation paid only in
accordance with applicable SEC regulations. For the period December 31, 1997
(commencement of operations) to May 31, 1998, the Fund paid no brokerage
commissions to PaineWebber or any other affiliate of Mitchell Hutchins.
 
  Transactions in futures contracts are executed through futures commission
merchants ("FCMs"), who receive brokerage commissions for their services. The
Fund's procedures in selecting FCMs to execute its transactions in futures
contracts, including procedures permitting the use of PaineWebber, are similar
to those in effect with respect to brokerage transactions in securities.
 
  Consistent with the interests of the Fund and subject to the review of the
board, Mitchell Hutchins may cause the Fund to purchase and sell portfolio
securities from and to dealers or through brokers who provide Mitchell
Hutchins with research, analysis, advice and similar services. The Fund may
pay to those brokers a higher commission than may be charged by other brokers,
provided that Mitchell Hutchins determines in good faith that such commission
is reasonable in terms either of that particular transaction or of the overall
responsibility of Mitchell Hutchins to the Fund and its other clients and that
the total commissions paid by the Fund will be reasonable in relation to the
benefits to the Fund over the long term. During the fiscal period ended May
31, 1998, the Fund directed no brokerage transactions to brokers chosen
because they provided research services.
 
  For purchases or sales with broker-dealer firms which act as principal,
Mitchell Hutchins seeks best execution. Although Mitchell Hutchins may receive
certain research or execution services in connection with these transactions,
it will not purchase securities at a higher price or sell securities at a
lower price than would otherwise be paid if no weight was attributed to the
services 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 which could be purchased for hard dollars. Mitchell Hutchins may
engage in agency transactions in OTC equity 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 Mitchell Hutchins receiving multiple quotes from dealers before
executing the transactions on an agency basis.
 
  Information and research services furnished by brokers or dealers through
which or with which the Fund effects securities transactions may be used by
Mitchell Hutchins in advising other funds or accounts and, conversely,
research services furnished to Mitchell Hutchins by brokers or dealers in
connection with other funds or accounts that it advises may be used in
advising the Fund. Information and research received from brokers or dealers
will be in addition to, and not in lieu of, the services required to be
performed by Mitchell Hutchins under the Advisory Contract.
 
  Investment decisions for the 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 the 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.
 
                                      19
<PAGE>
 
  The Fund will not purchase securities that are offered in underwritings in
which PaineWebber is a member of the underwriting or selling group, except
pursuant to procedures adopted by the board pursuant to Rule 10f-3 under the
1940 Act. Among other things, these procedures require that the spread or
commission paid in connection with such a purchase be reasonable and fair, the
purchase be at not more than the public offering price prior to the end of the
first business day after the date of the public offering and that PaineWebber
or any affiliate thereof not participate in or benefit from the sale to the
Fund.
 
  PORTFOLIO TURNOVER. The Fund's annual portfolio turnover rate may vary
greatly from year to year, but will not be a limiting factor when management
deems portfolio changes appropriate. The portfolio turnover rate is calculated
by dividing the lesser of the Fund's annual sales or purchases of portfolio
securities (exclusive of purchases or sales of securities whose maturities at
the time of acquisition were one year or less) by the monthly average value of
securities in the portfolio during the year. For the period December 31, 1997
(commencement of operations) to May 31, 1998, the Fund's portfolio turnover
rate was 1.0%.

 
           REDUCED SALES CHARGES, ADDITIONAL EXCHANGE AND REDEMPTION
                        INFORMATION AND OTHER SERVICES
 
  COMBINED PURCHASE PRIVILEGE-CLASS A SHARES. Investors and eligible groups of
related Fund investors may combine purchases of Class A shares of the Fund
with concurrent purchases of Class A shares of any other PaineWebber mutual
fund and thus take advantage of the reduced sales charges indicated in the
table of sales charges for Class A shares in the Prospectus. The sales charge
payable on the purchase of Class A shares of the Fund and Class A shares of
such other funds will be at the rates applicable to the total amount of the
combined concurrent purchases.
 
  An "eligible group of related Fund investors" can consist of any combination
of the following:
 
     (a) an individual, that individual's spouse, parents and children;
 
     (b) an individual and his or her Individual Retirement Account ("IRA");
 
     (c) an individual (or eligible group of individuals) and any company
   controlled by the individual(s) (a person, entity or group that holds 25%
   or more of the outstanding voting securities of a corporation will be
   deemed to control the corporation, and a partnership will be deemed to be
   controlled by each of its general partners);
 
     (d) an individual (or eligible group of individuals) and one or more
   employee benefit plans of a company controlled by individual(s);
 
     (e) an individual (or eligible group of individuals) and a trust created
   by the individual(s), the beneficiaries of which are the individual and/or
   the individual's spouse, parents or children;
 
     (f) an individual and a Uniform Gifts to Minors Act/Uniform Transfers to
   Minors Act account created by the individual or the individual's spouse;
 
     (g) an employer (or group of related employers) and one or more qualified
   retirement plans of such employer or employers (an employer controlling,
   controlled by or under common control with another employer is deemed
   related to that other employer); or
 
     (h) individual accounts related together under one registered investment
   adviser having full discretion and control over the accounts. The
   registered investment adviser must communicate at least quarterly through a
   newsletter or investment update establishing a relationship with all of the
   accounts.
 
  RIGHTS OF ACCUMULATION-CLASS A SHARES. Reduced sales charges are available
through a right of accumulation, under which investors and eligible groups of
related Fund investors (as defined above) are permitted to purchase Class A
shares of the Fund among related accounts at the offering price applicable to
the
 
                                      20
<PAGE>
 
total of (1) the dollar amount then being purchased plus (2) an amount equal
to the then-current net asset value of the purchaser's combined holdings of
Class A Fund shares and Class A shares of any other PaineWebber mutual fund.
The purchaser must provide sufficient information to permit confirmation of
his or her holdings, and the acceptance of the purchase order is subject to
such confirmation. The right of accumulation may be amended or terminated at
any time.
 
  ADDITIONAL EXCHANGE AND REDEMPTION INFORMATION. As discussed in the
Prospectus, eligible shares of the Fund may be exchanged for shares of the
corresponding Class of most other PaineWebber mutual funds. Shareholders will
receive at least 60 days' notice of any termination or material modification
of the exchange offer, except no notice need be given of an amendment whose
only material effect is to reduce the exchange fee and no notice need be given
if, under extraordinary circumstances, either redemptions are suspended under
the circumstances described below or the Fund temporarily delays or ceases the
sales of its shares because it is unable to invest amounts effectively in
accordance with the Fund's investment objective, policies and restrictions.
 
  If conditions exist that make cash payments undesirable, the 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 Fund may suspend redemption privileges or postpone the date of payment
during any period (1) when the New York Stock Exchange ("NYSE") is closed or
trading on the NYSE is restricted as determined by the SEC, (2) when an
emergency exists, as defined by the SEC, that makes it not reasonably
practicable for the Fund to dispose of securities owned by it or fairly to
determine the 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.
 
  SERVICE ORGANIZATIONS. The Fund may authorize service organizations, and
their agents, to accept on its behalf purchase and redemption orders that are
in "good form." The Fund will be deemed to have received these purchase and
redemption orders when a service organization or its agent accepts them. Like
all customer orders, these orders will be priced based on the Fund's net asset
value next computed after receipt of the order by the service organizations or
their agents. Service organizations may include retirement plan service
providers who aggregate purchase and redemption instructions received from
numerous retirement plans or plan participants.
 
  AUTOMATIC INVESTMENT PLAN. Participation in the Automatic Investment Plan
enables an investor to use the technique of "dollar cost averaging." When an
investor invests the same dollar amount each month under the Plan, the
investor will purchase more shares when the Fund's net asset value per share
is low and fewer shares when the net asset value per share is high. Using this
technique, an investor's average purchase price per share over any given
period will be lower than if the investor purchased a fixed number of shares
on a monthly basis during the period. Of course, investing through the
automatic investment plan does not assure a profit or protect against loss in
declining markets. Additionally, because the automatic investment plan
involves continuous investing regardless of price levels, an investor should
consider his or her financial ability to continue purchases through periods of
low price levels.
 
  SYSTEMATIC WITHDRAWAL PLAN. An investor's participation in the systematic
withdrawal plan will terminate automatically if the "Initial Account Balance"
(a term that means the value of the Fund account at the time the investor
elects to participate in the systematic withdrawal plan) less aggregate
redemptions made other than pursuant to the systematic withdrawal plan is less
than $5,000 for Class A and Class C shareholders. Purchases of additional
shares of the Fund concurrent with withdrawals are ordinarily disadvantageous
to shareholders because of tax liabilities. On or about the 20th of each month
for monthly, quarterly, semiannual or annual plans, PaineWebber will arrange
for redemption by the Fund of sufficient Fund shares to provide the withdrawal
payments specified by participants in the Fund's systematic withdrawal plan.
The payments generally are mailed approximately five Business Days (defined
under "Valuation of Shares") after the redemption date. Withdrawal payments
should not be considered dividends, but redemption proceeds, with the tax
consequences described under "Dividends & Taxes" in the Prospectus. If
periodic withdrawals continually exceed reinvested
 

                                      21
<PAGE>
 
dividends and other distributions, a shareholder's investment may be
correspondingly reduced. A shareholder may change the amount of the systematic
withdrawal or terminate participation in the systematic withdrawal plan at any
time without charge or penalty by written instructions with signatures
guaranteed to PaineWebber or PFPC Inc. ("Transfer Agent"). Instructions to
participate in the plan, change the withdrawal amount or terminate
participation in the plan will not be effective until five days after written
instructions with signatures guaranteed are received by the Transfer Agent.
Shareholders may request the forms needed to establish a systematic withdrawal
plan from their PaineWebber investment executives, correspondent firms or the
Transfer Agent at 1-800-647-1568.
 
  REINSTATEMENT PRIVILEGE--CLASS A SHARES. As described in the Prospectus,
shareholders who have redeemed their Class A shares of the Fund may reinstate
their account without a sales charge. Shareholders may exercise the
reinstatement privilege by notifying the Transfer Agent of such desire and
forwarding a check for the amount to be purchased within 365 days after the
date of redemption. The reinstatement will be made at the net asset value per
share next computed after the notice of reinstatement and check are received.
The amount of a purchase under this reinstatement privilege cannot exceed the
amount of the redemption proceeds. Gain on a redemption is taxable regardless
of whether the reinstatement privilege is exercised; however, a loss arising
out of a redemption will not be deductible to the extent the redemption
proceeds are reinvested, if the reinstatement privilege is exercised within 30
days after redemption, and an adjustment will be made to the shareholder's tax
basis for the shares acquired pursuant to the reinstatement privilege. Gain or
loss on a redemption also will be adjusted for federal income tax purposes by
the amount of any sales charge paid on Class A shares, under the circumstances
and to the extent described in "Dividends & Taxes" in the Prospectus.
 
PAINEWEBBER RMA RESOURCE ACCUMULATION PLANSM
PAINEWEBBER RESOURCE MANAGEMENT ACCOUNT(R) (RMA)(R)
 
  Shares of PaineWebber mutual funds, including the Fund (each a "PW Fund"
and, collectively, the "PW Funds") are available for purchase through the RMA
Resource Accumulation Plan ("Plan") by customers of PaineWebber and its
correspondent firms who maintain Resource Management Accounts ("RMA
accountholders"). The Plan allows an RMA accountholder continually to invest
in one or more of the PW Funds at regular intervals, with payment for shares
purchased automatically deducted from the client's RMA account. The client may
elect to invest at monthly or quarterly intervals and may elect either to
invest a fixed dollar amount (minimum $100 per period) or to purchase a fixed
number of shares. A client can elect to have Plan purchases executed on the
first or fifteenth day of the month. Settlement occurs three Business Days
(defined under "Valuation of Shares") after the trade date, and the purchase
price of the shares is withdrawn from the investor's RMA account on the
settlement date from the following sources and in the following order:
uninvested cash balances, balances in RMA money market funds, or margin
borrowing power, if applicable to the account.
 
  To participate in the Plan, an investor must be an RMA accountholder, must
have made an initial purchase of the shares of each PW Fund selected for
investment under the Plan (meeting applicable minimum investment requirements)
and must complete and submit the RMA Resource Accumulation Plan Client
Agreement and Instruction Form available from PaineWebber. The investor must
have received a current prospectus for each PW Fund selected prior to
enrolling in the Plan. Information about mutual fund positions and outstanding
instructions under the Plan are noted on the RMA accountholder's account
statement. Instructions under the Plan may be changed at any time, but may
take up to two weeks to become effective.
 
  The terms of the Plan, or an RMA accountholder's participation in the Plan,
may be modified or terminated at any time. It is anticipated that, in the
future, shares of other PW Funds and/or mutual funds other than the PW Funds
may be offered through the Plan.
 
  PERIODIC INVESTING AND DOLLAR COST AVERAGING. Periodic investing in the PW
Funds or other mutual funds, whether through the Plan or otherwise, helps
investors establish and maintain a disciplined approach to accumulating assets
over time, deemphasizing the importance of timing the market's highs and lows.
Periodic investing also permits an investor to take advantage of "dollar cost
averaging." By investing a fixed amount in
 
                                      22
<PAGE>
 
mutual fund shares at established intervals, an investor purchases more shares
when the price is lower and fewer shares when the price is higher, thereby
increasing his or her earning potential. Of course, dollar cost averaging does
not guarantee a profit or protect against a loss in a declining market, and an
investor should consider his or her financial ability to continue investing
through periods of low share prices. However, over time, dollar cost averaging
generally results in a lower average original investment cost than if an
investor invested a larger dollar amount in a mutual fund at one time.
 
  PAINEWEBBER'S RESOURCE MANAGEMENT ACCOUNT. In order to enroll in the Plan,
an investor must have opened an RMA account with PaineWebber or one of its
correspondent firms. The RMA account is PaineWebber's comprehensive asset
management account and offers investors a number of features, including the
following:
 
  . monthly Premier account statements that itemize all account activity,
    including investment transactions, checking activity and Gold MasterCard(R)
    transactions during the period, and provide unrealized and realized gain
    and loss estimates for most securities held in the account;
    
  . comprehensive preliminary 9-month and year-end summary statements that
    provide information on account activity for use in tax planning and tax
    return preparation;
 
  . automatic "sweep" of uninvested cash into the RMA accountholder's choice
    of one of the six RMA money market funds--RMA Money Market Portfolio, RMA
    U.S. Government Portfolio, RMA Tax-Free Fund, RMA California Municipal
    Money Fund, RMA New Jersey Municipal Money Fund and RMA New York
    Municipal Money Fund. An investment in a money market fund is not insured
    or guaranteed by the Federal Deposit Insurance Corporation or any other
    government agency. Although a money market fund seeks to preserve the
    value of your investment at $1.00 per share, it is possible to lose money
    by investing in a money market fund.
 
  . check writing, with no per-check usage charge, no minimum amount on
    checks and no maximum number of checks that can be written. RMA
    accountholders can code their checks to classify expenditures. All
    canceled checks are returned each month;
 
  . Gold MasterCard, with or without a line of credit, which provides RMA
    accountholders with direct access to their accounts and can be used with
    automatic teller machines worldwide. Purchases on the Gold MasterCard are
    debited to the RMA account once monthly, permitting accountholders to
    remain invested for a longer period of time;
 
  . 24-hour access to account information through toll-free numbers, and more
    detailed personal assistance during business hours from the RMA Service
    Center;
 
  . expanded account protection to $50 million in the event of the
    liquidation of PaineWebber. This protection does not apply to shares of
    the RMA money market funds or the PW Funds because those shares are held
    at the transfer agent and not through PaineWebber; and
 
  . automatic direct deposit of checks into your RMA account and automatic
    withdrawals from the account.
 
  The annual account fee for an RMA account is $85, which includes the Gold
MasterCard, with an additional fee of $40 if the investor selects an optional
line of credit with the Gold MasterCard.
 
                              VALUATION OF SHARES
 
  The Fund determines its net asset value per share separately for each class
of shares normally as of the close of regular trading (usually 4:00 p.m.,
Eastern time) on the NYSE on each Business Day, which is defined as each
Monday through Friday when the NYSE is open. Prices will be calculated earlier
when the NYSE closes early because trading has been halted for the day.
Currently the NYSE is closed on the observance of the following holidays: New
Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good Friday,
Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.
 
 
                                      23
<PAGE>
 
  Securities that are listed on stock exchanges are valued at the last sale
price on the day the securities are valued or, lacking any sales on such day,
at the last available bid price. In cases where securities are traded on more
than one exchange, the securities are generally valued on the exchange
considered by Mitchell Hutchins as the primary market. Securities traded in
the OTC market and listed on the Nasdaq Stock Market ("Nasdaq") are valued at
the last trade price on Nasdaq prior to valuation; other OTC securities are
valued at the last bid price available prior to valuation (other than short-
term investments that mature in 60 days or less which are valued at amortized
cost, unless the board determines that this does not represent fair value).
Securities and assets for which market quotations are not readily available
are valued at fair value as determined in good faith by or under the direction
of the board.
 
                            PERFORMANCE INFORMATION
 
  The Fund's performance data quoted in advertising and other promotional
materials ("Performance Advertisements") represents past performance and is
not intended to indicate future performance. The investment return and
principal value of an investment will fluctuate so that an investor's shares,
when redeemed, may be worth more or less than their original cost.
 
  TOTAL RETURN CALCULATIONS. Average annual total return quotes ("Standardized
Return") used in the Fund's Performance Advertisements are calculated
according to the following formula:
 
<TABLE>
<S>          <C> <C> 
   P(1 + T)n  =  ERV
    where: P  =  a hypothetical initial payment of $1,000 to purchase shares of
                 a specified class
           T  =  average annual total return of shares of that class
           n  =  number of years
         ERV  =  ending redeemable value of a hypothetical $1,000 payment at
                 the beginning of that period.
</TABLE>
 
  Under the foregoing formula, the time periods used in Performance
Advertisements will be based on rolling calendar quarters, updated to the last
day of the most recent quarter prior to submission of the advertisement for
publication. Total return, or "T" in the formula above, is computed by finding
the average annual change in the value of an initial $1,000 investment over
the period. In calculating the ending redeemable value, for Class A shares,
the maximum 2.5% sales charge is deducted from the initial $1,000 payment and,
for Class C shares, the applicable contingent deferred sales charge imposed on
a redemption of Class C shares held for the period is deducted. All dividends
and other distributions are assumed to have been reinvested at net asset
value.
 
  The Fund also may refer in Performance Advertisements to total return
performance data that are not calculated according to the formula set forth
above ("Non-Standardized Return"). The Fund calculates Non-Standardized Return
for specified periods of time by assuming an investment of $1,000 in Fund
shares and assuming the reinvestment of all dividends and other distributions.
The rate of return is determined by subtracting the initial value of the
investment from the ending value and by dividing the remainder by the initial
value. Neither initial nor contingent deferred sales charges are taken into
account in calculating Non-Standardized Return; the inclusion of those charges
would reduce the return.
 
  The following table shows performance information for the Fund's Class Y
shares outstanding for the period indicated. There were no Class A or C shares
outstanding as of May 31, 1998.
 
<TABLE>
<CAPTION>
                                                                          CLASS
                                                                            Y
                                                                          -----
<S>                                                                       <C>
Inception* to May 31, 1998:
  Standardized Return.................................................... 12.96%
  Non-Standardized Return................................................ 12.96%
</TABLE>
- --------
* The inception date for Class Y shares was December 31, 1997.
 
 
                                      24
<PAGE>
 
  OTHER INFORMATION. In Performance Advertisements, the Fund may compare its
Standardized Return with data published by Lipper Analytical Services, Inc.
("Lipper"), CDA Investment Technologies, Inc. ("CDA"), Wiesenberger Investment
Companies Service ("Wiesenberger"), Investment Company Data, Inc. ("ICD") or
Morningstar Mutual Funds ("Morningstar"), with the performance of recognized
stock and other indices, including (but not limited to) the S&P 500 Index, the
Dow Jones Industrial Average, the International Finance Corporation Global
Total Return Index, the Nasdaq Composite Index, the Russell 2000 Index, the
Wilshire 5000 Index, the Lehman Bond Index, the Lehman Brothers 20+ Year
Treasury Bond Index, the Lehman Brothers Government/Corporate Bond Index,
other similar Lehman Brothers indices or components thereof, 30-year and 10-
year U.S. Treasury bonds, the Morgan Stanley Capital International Perspective
Indices, the Morgan Stanley Capital International Energy Sources Index, the
Standard & Poor's Oil Composite Index, the Morgan Stanley Capital
International World Index, the Salomon Brothers Non-U.S. Dollar Index, the
Salomon Brothers Non-U.S. World Government Bond Index, the Salomon Brothers
World Government Index, other similar Salomon Brothers indices or components
thereof and changes in the Consumer Price Index as published by the U.S.
Department of Commerce. The Fund also may refer in such materials to mutual
fund performance rankings and other data, such as comparative asset, expense
and fee levels, published by Lipper, CDA, Wiesenberger, ICD or Morningstar.
Performance Advertisements also may refer to discussions of the Fund 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.
 
  The Fund may include discussions or illustrations of the effects of
compounding in Performance Advertisements. "Compounding" refers to the fact
that, if dividends or other distributions on the Fund investment are
reinvested in additional Fund shares, any future income or capital
appreciation 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 the Fund investment would increase
more quickly than if dividends or other distributions had been paid in cash.
The Fund may also generally discuss or illustrate the increasingly popular
benefits of investing through an index fund, such as immediate
diversification; convenience; relatively lower portfolio turnover and expected
transaction costs; and the likelihood that lower portfolio turnover will
result in otherwise higher after-tax returns.
 
  The Fund may also compare its performance with the performance of bank
certificates of deposit (CDs) as measured by the CDA Certificate of Deposit
Index, the Bank Rate Monitor National Index and the averages of yields of CDs
of major banks published by Banxquote(R) Money Markets. In comparing the
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. Shares of the Fund are not insured or guaranteed by
the U.S. government and returns and net asset values will fluctuate. The debt
securities held by the Fund may have longer maturities than most CDs and may
reflect interest rate fluctuations for longer term debt securities. An
investment in the Fund involves greater risks than an investment in either a
money market fund or a CD.
 
 

                                      25
<PAGE>
 
  The Fund may also compare its performance to general trends in the stock and
bond markets, as illustrated by the following graph prepared by Ibbotson
Associates, Chicago.*
 
                             [GRAPH APPEARS HERE]

- --------
* Source: Stocks, Bonds, Bills and Inflation 1998 Yearbook(TM) Ibbotson
  Assoc., Chi., (annual updates work by Roger G. Ibbotson & Rex A.
  Sinquefield).
 
  The chart is shown for illustrative purposes only and does not represent the
Fund's performance. These returns consist of income and capital appreciation
(or depreciation) and should not be considered an indication or guarantee of
future investment results. Year-to-year fluctuations in certain markets have
been significant, and negative returns have been experienced in certain
markets from time to time. Stocks are measured by the S&P 500 Index, an
unmanaged weighted index comprising 500 widely held common stocks and varying
in composition. Unlike investors in bonds and U.S. Treasury bills, common
stock investors do not receive fixed income payments and are not entitled to
repayment of principal. These differences contribute to investment risk.
Returns shown for long-term government bonds are based on U.S. Treasury bonds
with 20-year maturities. Inflation is measured by the Consumer Price Index.
The indexes are unmanaged and are not available for investment.
 
  Over time, stocks have outperformed all other investments by a wide margin,
offering a solid hedge against inflation. From 1925 to 1997, stocks beat all
other traditional asset classes. A $10,000 investment in the S&P 500 grew to
$18,272,762, significantly more than any other investment.
 
                                     TAXES
 
  To continue to qualify for treatment as a regulated investment company
("RIC") under the Internal Revenue Code, the Fund must distribute to its
shareholders for each taxable year at least 90% of its investment company
taxable income (consisting generally of net investment income and net short-
term capital gain) ("Distribution Requirement") and must meet several
additional requirements. 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 and gains from
the sale or other disposition of securities, or other income (including gains
from options and futures) derived with respect to its business of investing in
securities ("Income Requirement"); (2) 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, securities of
other RICs 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 that does not represent more than 10% of the
issuer's outstanding voting securities; and (3) 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 or the
securities of other RICs) of any one issuer.
 
 
                                      26
<PAGE>
 
  Dividends and other distributions declared by the Fund in October, November
or December of any year and payable to shareholders of record on a date in any
of those months will be deemed to have been paid by the Fund and received by
the shareholders on December 31 of that year if the distributions are paid by
the Fund during the following January. Accordingly, those distributions will
be taxed to shareholders for the year in which that December 31 falls.
 
  A portion of the dividends from the Fund's investment company taxable income
(whether paid in cash or additional shares) may be eligible for the dividends-
received deduction allowed to corporations. The eligible portion may not
exceed the aggregate dividends received by the Fund from U.S. corporations.
However, dividends received by a corporate shareholder and deducted by it
pursuant to the dividends-received deduction are subject indirectly to the
alternative minimum tax.
 
  If Fund shares are sold at a loss after being held for six months or less,
the loss will be treated as long-term, instead of short-term, capital loss to
the extent of any capital gain distributions received on those shares.
Investors also should be aware that if shares are purchased shortly before the
record date for any dividend or capital gain distribution, the shareholder
will pay full price for the shares and receive some portion of the price back
as a taxable distribution.
 
  The Fund will be subject to a nondeductible 4% excise tax ("Excise Tax") to
the extent it fails to distribute by the end of any calendar year
substantially all of its ordinary income for that year and capital gain net
income for the one-year period ending on October 31 of that year, plus certain
other amounts.
 
  The use of hedging strategies involving Derivative Instruments, such as
writing (selling) and purchasing options and futures contracts, involves
complex rules that will determine for income tax purposes the amount,
character and timing of recognition of the gains and losses the Fund realizes
in connection therewith. Gains from options and futures contracts derived by
the Fund with respect to its business of investing in securities will qualify
as permissible income under the Income Requirement.
 
                               OTHER INFORMATION
 
  The Trust is a Delaware business trust. The Trust has authority to issue an
unlimited number of shares of beneficial interest. The board may, without
shareholder approval, divide the authorized shares into an unlimited number of
separate series and may divide the shares of any series into classes, and the
costs of doing so will be borne by the Trust. The Trust currently consist of
one operating series with three classes of shares.
 
  Although Delaware law statutorily limits the potential liabilities of a
Delaware business trust's shareholders to the same extent as it limits the
potential liabilities of a Delaware corporation, shareholders of the Fund
could, under certain conflicts of laws jurisprudence in various states, be
held personally liable for the obligations of the Trust or the Fund. However,
the Trust's trust instrument disclaims shareholder liability for acts or
obligations of the Trust or its series (the Fund) and requires that notice of
such disclaimer be given in each written obligation made or issued by the
trustees or by any officers or officer by or on behalf of the Trust, a series,
the trustees or any of them in connection with the Trust. The trust instrument
provides for indemnification from the Fund's property for all losses and
expenses of any series 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 the Fund
itself would be unable to meet its obligations, a possibility which Mitchell
Hutchins believes is remote and not material. Upon payment of any liability
incurred by a shareholder solely by reason of being or having been a
shareholder of the Fund, 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 the Fund in such a way as to avoid, as far
as possible, ultimate liability of the shareholders for liabilities of the
Fund.
 
 
                                      27
<PAGE>
 
  CLASS-SPECIFIC EXPENSES. The Fund may determine to allocate certain of its
expenses to the specific classes of the Fund's shares to which those expenses
are attributable. For example, the Fund's Class C shares bear higher transfer
agency fees per shareholder account than those borne by Class A or Class Y
shares. The higher fee is imposed due to the higher costs incurred by the
transfer agent in tracking shares subject to a contingent deferred sales
charge because, upon redemption, the duration of the shareholder's investment
must be determined to determine the applicable charge. Although the transfer
agency fee will differ on a per account basis as stated above, the specific
extent to which the transfer agency fees will differ between the classes as a
percentage of net assets is not certain, because the fee as a percentage of
net assets will be affected by the number of shareholder accounts in each
class and the relative amounts of net assets in each class.
 
  COUNSEL. The law firm of Kirkpatrick & Lockhart LLP, 1800 Massachusetts
Avenue, N.W., Washington, D.C. 20036-1800, serves as counsel to the Fund.
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 Fund.
 
                             FINANCIAL STATEMENTS
 
  The Fund's Annual Report to Shareholders for the period ended May 31, 1998
is a separate document supplied with this Statement of Additional Information,
and the financial statements, accompanying notes and report of independent
auditors appearing therein are incorporated herein by this reference.
 
                                      28
<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 FUND OR ITS DISTRIBUTOR. THE PROSPECTUS
AND THIS STATEMENT OF ADDITIONAL INFORMATION DO NOT CONSTITUTE AN OFFERING BY
THE FUND OR BY THE DISTRIBUTOR IN ANY JURISDICTION IN WHICH SUCH OFFERING MAY
NOT LAWFULLY BE MADE.
 
                                  -----------
 
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                        <C>
Investment Policies And Restrictions......................................   1
Strategies Using Derivative Instruments...................................   5
Trustees And Officers; Principal Holders Of Securities....................  10
Investment Advisory And Distribution Arrangements.........................  16
Portfolio Transactions....................................................  18
Reduced Sales Charges, Additional Exchange and Redemption Information And
 Other Services...........................................................  20
Valuation Of Shares.......................................................  23
Performance Information...................................................  24
Taxes.....................................................................  26
Other Information.........................................................  27
Financial Statements......................................................  27

</TABLE>
 
(C)1998 PaineWebber Incorporated
                                                                     PAINEWEBBER
                                                              S&P 500 INDEX FUND
 
 
- --------------------------------------------------------------------------------
                                             STATEMENT OF ADDITIONAL INFORMATION
                                                                 OCTOBER 1, 1998
- --------------------------------------------------------------------------------
 
 
                                             [LOGO OF PAINEWEBBER APPEARS HERE]


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