0001104659-10-046281.txt : 20120618 0001104659-10-046281.hdr.sgml : 20120618 20100827131058 ACCESSION NUMBER: 0001104659-10-046281 CONFORMED SUBMISSION TYPE: 485APOS PUBLIC DOCUMENT COUNT: 43 FILED AS OF DATE: 20100827 DATE AS OF CHANGE: 20110620 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UBS FUNDS CENTRAL INDEX KEY: 0000886244 IRS NUMBER: 367056204 STATE OF INCORPORATION: DE FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: 485APOS SEC ACT: 1933 Act SEC FILE NUMBER: 033-47287 FILM NUMBER: 101042978 BUSINESS ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: ONE NORTH WACKER DR. CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 312-525-7100 MAIL ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: ONE NORTH WACKER DR. CITY: CHICAGO STATE: IL ZIP: 60606 FORMER COMPANY: FORMER CONFORMED NAME: BRINSON FUNDS INC DATE OF NAME CHANGE: 19920929 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UBS FUNDS CENTRAL INDEX KEY: 0000886244 IRS NUMBER: 367056204 STATE OF INCORPORATION: DE FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: 485APOS SEC ACT: 1940 Act SEC FILE NUMBER: 811-06637 FILM NUMBER: 101042979 BUSINESS ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: ONE NORTH WACKER DR. CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 312-525-7100 MAIL ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: ONE NORTH WACKER DR. CITY: CHICAGO STATE: IL ZIP: 60606 FORMER COMPANY: FORMER CONFORMED NAME: BRINSON FUNDS INC DATE OF NAME CHANGE: 19920929

0000886244 S000002977 UBS High Yield Fund

C000008174 CLASS A BNHYX

C000008175 CLASS B BNHBX

C000008176 CLASS C BNHCX

C000008177 CLASS Y BIHYX

0000886244 S000002978 UBS U.S. Large Cap Equity Fund

C000008178 Class A BNEQX

C000008179 CLASS B BNQBX

C000008180 CLASS C BNQCX

C000008181 CLASS Y BPEQX

0000886244 S000002979 UBS GLOBAL ALLOCATION FUND

C000008182 CLASS A BNGLX

C000008183 CLASS B BNPBX

C000008184 CLASS C BNPCX

C000008185 CLASS Y BPGLX

0000886244 S000002980 UBS INTERNATIONAL EQUITY FUND

C000008186 CLASS A BNIEX

C000008187 CLASS B BNIBX

C000008188 CLASS C BNICX

C000008189 CLASS Y BNUEX

0000886244 S000002981 UBS U.S. BOND FUND

C000008190 CLASS A BNBDX

C000008191 CLASS B BNOBX

C000008192 CLASS C BNOCX

C000008193 CLASS Y BPBDX

0000886244 S000002982 UBS U.S. LARGE CAP VALUE EQUITY FUND

C000008194 CLASS A BNVAX

C000008195 CLASS B BNVBX

C000008196 CLASS C BNVCX

C000008197 CLASS Y BUSVX

0000886244 S000002984 UBS GLOBAL BOND FUND

C000008202 CLASS A BNGBX

C000008203 CLASS B BNDBX

C000008204 CLASS C BNDCX

C000008205 CLASS Y BPGBX

0000886244 S000002985 UBS U.S. SMALL CAP GROWTH FUND

C000008206 CLASS A BNSCX

C000008207 CLASS B BNMBX

C000008208 CLASS C BNMCX

C000008209 CLASS Y BISCX

0000886244 S000003130 UBS U.S. SMALL CAP EQUITY FUND

C000008483 CLASS A

C000008485 CLASS C

C000008486 CLASS Y

0000886244 S000003131 UBS U.S. REAL ESTATE EQUITY FUND

C000008487 CLASS A

C000008489 CLASS C

C000008490 CLASS Y

0000886244 S000003132 UBS GLOBAL EQUITY FUND

C000008491 CLASS A BNGEX

C000008492 CLASS B BNEBX

C000008493 CLASS C BNECX

C000008494 CLASS Y BPGEX

0000886244 S000003133 UBS EMERGING MARKETS DEBT FUND

C000008495 CLASS A

C000008497 CLASS C

C000008498 CLASS Y

0000886244 S000003134 UBS EMERGING MARKETS EQUITY FUND

C000008499 CLASS A

C000008501 CLASS C

C000008502 CLASS Y

0000886244 S000003135 UBS DYNAMIC ALPHA FUND

C000008503 CLASS A BNAAX

C000008504 CLASS B BNABX

C000008505 CLASS C BNACX

C000008506 CLASS Y BNAYX

0000886244 S000003136 UBS ABSOLUTE RETURN BOND FUND

C000008507 CLASS A BNRAX

C000008508 CLASS C BNRCX

C000008509 CLASS Y BNRYX

0000886244 S000013001 UBS U.S. Equity Alpha Fund

C000035135 Class A BEAAX

C000035136 Class C BEACX

C000035137 Class Y BEAYX

0000886244 S000017860 UBS Global Frontier Fund

C000049576 Class A BGFAX

C000049577 Class C BGFCX

C000049578 Class Y BGFYX

485APOS 1 a10-14748_1485apos.htm 485APOS

As filed with the U.S. Securities and Exchange Commission on August 27, 2010

File No. 033-47287

File No. 811-06637

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-1A

	REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x

	Pre-Effective Amendment No.	o
	Post-Effective Amendment No. 85	x

	and/or

	REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x

	Amendment No. 86

(Check appropriate box or boxes.)

THE UBS FUNDS

(Exact Name of Registrant as Specified in Charter)

One North Wacker, Chicago, Illinois 60606

(Address of Principal Executive Office) (Zip Code)

Registrant’s Telephone Number, including Area Code 312-525-7100

Mark F. Kemper

UBS Global Asset Management

One North Wacker

Chicago, Illinois 60606

(Name and Address of Agent for Service)

Please send copies of all communications to:

Bruce G. Leto, Esq.

Stradley, Ronon, Stevens & Young, LLP

2600 One Commerce Square

Philadelphia, PA 19103

(215) 564-8027

Approximate Date of Proposed Public Offering: As soon as practicable after the effective date of this registration statement.

It is proposed that this filing will become effective (check appropriate box):

o		immediately upon filing pursuant to paragraph (b)
o		on [Date] pursuant to paragraph (b)
x		60 days after filing pursuant to paragraph (a)(1)
o		on [Date] pursuant to paragraph (a)(1)
o		75 days after filing pursuant to paragraph (a)(2)
o		on [Date] pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

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

This Amendment relates to all shares classes of each series of the Trust, except for the UBS Market Neutral Multi-Strategy Fund series of the Trust. No information relating to the UBS Market Neutral Multi-Strategy Fund is amended or superseded hereby.

The UBS Funds

UBS Dynamic Alpha Fund

UBS Global Allocation Fund

UBS Global Frontier Fund

Prospectus

October 28, 2010

UBS Dynamic Alpha Fund; Class A (BNAAX), Class B (BNABX), Class C (BNACX), Class Y (BNAYX)

UBS Global Allocation Fund; Class A (BNGLX), Class B (BNPBX), Class C (BNPCX), Class Y (BPGLX)

UBS Global Frontier Fund; Class A (BGFAX), Class C (BGFCX), Class Y (BGFYX)

This prospectus offers Class A, Class C and Class Y shares in three of the eighteen series of The UBS Funds (the "Trust") listed above (each, a "Fund" and, collectively, the "Funds"). This prospectus offers Class B shares of the UBS Dynamic Alpha Fund and UBS Global Allocation Fund only to existing shareholders of Class B shares with respect to the reinvestment of dividends and distributions and exchanges of Class B shares of the Funds and other series of the UBS Family of Funds. The UBS Global Frontier Fund does not offer Class B shares.

As with all mutual funds, the U.S. Securities and Exchange Commission ("SEC") has not approved or disapproved any Fund's shares or determined whether this prospectus is complete or accurate. To state otherwise is a crime.

Not FDIC Insured. May lose value. No bank guarantee.

The UBS Funds

Contents

The UBS Funds

What every investor should know about the Funds

Fund summaries

UBS Dynamic Alpha Fund				Page 3

UBS Global Allocation Fund				Page 8

UBS Global Frontier Fund				Page 13

More Information about the Funds

UBS Dynamic Alpha Fund—Investment objective, strategies, securities selection and risks				Page 18

UBS Global Allocation Fund—Investment objective, strategies, securities selection and risks				Page 23

UBS Global Frontier Fund—Investment objective, strategies, securities selection and risks				Page 27

Your investment

Information for managing your fund account

Managing your Fund account				Page 34

—Flexible pricing				Page 34

—Buying shares				Page 39

—Selling shares				Page 42

—Exchanging shares				Page 43

—Pricing and valuation				Page 44

Additional information

Additional important information about the funds

Management				Page 46

Disclosure of portfolio holdings				Page 49

Dividends and taxes				Page 49

Supplemental investment advisor performance information				Page 52

Financial highlights				Page 61

Where to learn more about the funds				Back cover

Please find the UBS Funds' Privacy Notice on page [__] of this Prospectus.

The Funds are not a complete or balanced investment program.

UBS Global Asset Management
2

UBS Dynamic Alpha Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page[__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

	Class A			Class B⁽¹⁾			Class C			Class Y
Maximum front-end sales charge (load) imposed on purchases (as a % of offering price)		5.50	%	None			None			None
Maximum contingent deferred sales charge (load) (CDSC) (as a % of purchase or sales price, whichever is less)	None				5.00	%		1.00	%	None
Redemption fee (as a percentage of amount redeemed within 90 days of purchase, if applicable)		1.00	%		1.00	%		1.00	%		1.00	%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN 485(B) FILING]

Class A

Class B

Class C

Class Y

Management fees

[0.81

Distribution and/or service
(12b-1) fees

0.25

1.00

None

Other expenses:

[__]

Dividend expense and
securities loan fees for
securities sold short

[__]

Other

[__]

Total other expenses

[__]

Acquired fund fees and expenses

[__]

Total annual fund operating
expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management fee
waiver/expense reimbursements⁽²⁾

[__]

¹ Since the "Acquired fund fees and expenses" are not directly borne by the Fund, they are not reflected in the Fund's financial statements, and therefore the amounts listed in "Total annual fund operating expenses" and "Total annual fund operating expenses after management fee waiver/expense reimbursements" will differ from those presented in the Financial highlights.

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses, securities loan fees and dividend expenses for securities sold short) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses, securities loan fees and dividend expenses for securities sold short), through the period ending October 27, 2011, do not exceed 1.35% for Class A shares, 2.10% for Class B shares, 2.10% for Class C shares and 1.10% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

UBS Global Asset Management
3

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods unless otherwise stated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The costs described in the example reflect the expenses of the Fund that would result from the contractual fee waiver and expense reimbursement agreement with the Advisor for the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 year

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was [__]% of the average value of its portfolio.

Principal strategies
Principal investments

The Fund invests in securities and financial instruments to gain exposure to global equity, global fixed income and cash equivalent markets, including global currencies. The Fund may invest in equity and fixed income securities of issuers located within and outside the United States or in open-end investment companies advised by the Advisor, to gain exposure to certain global equity and global fixed income markets. The Fund is a non-diversified fund.

Investments in fixed income securities may include, but are not limited to, debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations and supranationals, inflation protected securities, convertible bonds, mortgage-backed securities, asset-backed securities, equipment trusts and other collateralized debt securities. Investments in fixed income securities may include issuers in both developed (including the United States) and emerging markets.

Investments in equity securities may include, but are not limited to, common stock and preferred stock of issuers in developed nations (including the United States) and emerging markets. Equity investments may include securities of companies of any capitalization size.

In addition, the Fund attempts to generate positive returns and manage risk through asset allocation and sophisticated currency management techniques. These decisions are integrated with analysis of global market and economic conditions.

The Fund may, but is not required to, use derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include options, futures, forward agreements, swap agreements (including, but not limited to interest rate, total return and credit default swaps), credit-linked securities, equity participation notes and equity linked notes. The Fund may establish net short or net long positions for individual markets, currencies and securities. The Fund also may sell securities short as part of its investment strategy.

In employing its investment strategies for the Fund, the Advisor attempts to achieve a total rate of return for the Fund that meets or exceeds 5% per year on a real (i.e., inflation-adjusted) basis and net of management fees over rolling five year time horizons. The Advisor does not represent or guarantee that the Fund will meet this total return goal.

Under certain market conditions, the Fund may invest in companies at the time of their initial public offering ("IPO"). To the extent permitted by the Investment Company Act of 1940, as amended (the "1940 Act"), the Fund may borrow money from banks to purchase investments for the Fund.

Management process

The Fund is a multi-asset fund. Asset allocation decisions are tactical, based upon the Advisor's assessment of valuations and prevailing market conditions in the United States and abroad. Investments also may be made in selected sectors of these asset classes.

UBS Global Asset Management
4

In selecting equity securities for the Fund, the Advisor selects securities whose fundamental values (the Advisor's assessment of what a security is worth) it believes are greater than their market prices. A stock with a market price below its assessed fundamental value would be considered a long candidate for inclusion in the Fund's portfolio. A stock with a market price above its assessed fundamental value would be considered a short candidate for inclusion in the Fund's portfolio.

Under certain circumstances the Advisor also may utilize growth-oriented strategies within its US equity asset class for a portion of the allocation. To invest in growth equities, the Advisor seeks to invest in companies that possess a dominant market position and franchise, a major technological edge or a unique competitive advantage.

Main risks

All investments carry a certain amount of risk and the Fund cannot guarantee that it will achieve its investment objective. You may lose money by investing in the Fund. An investment in the Fund is not a deposit of the bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Below are some of the specific risks of investing in the Fund.

Interest rate risk: An increase in prevailing interest rates typically causes the value of fixed income securities to fall. Changes in interest rates will likely affect the value of longer-duration fixed income securities more than shorter-duration securities and higher quality securities more than lower quality securities. When interest rates are falling, some fixed income securities provide that the issuer may repay them earlier than the maturity date, and if this occurs the Fund may have to reinvest these repayments at lower interest rates.

Credit risk: The risk that the Fund could lose money if the issuer or guarantor of a fixed income security, or the counterparty to or guarantor of a derivative contract, is unable or unwilling to meet its financial obligations. This risk is likely greater for lower quality investments than for investments that are higher quality.

High yield bond risk: The risk that the issuer of bonds with ratings of BB (S&P) or Ba (Moody's) or below, or deemed of equivalent quality, will default or otherwise be unable to honor a financial obligation. These securities are considered to be predominately speculative with respect to an issuer's capacity to pay interest and repay principal in accordance with the terms of the obligations. Lower-quality bonds are more likely to be subject to an issuer's default or downgrade than investment grade (higher-quality) bonds.

Government securities risk: There are different types of US government securities with different levels of credit risk, including risk of default, depending on the nature of the particular government support for that security. For example, a US government-sponsored entity, although chartered or sponsored by an Act of Congress, may issue securities that are neither insured nor guaranteed by the US Treasury and are therefore riskier than those that are.

Market risk: The risk that the market value of the Fund's investments may fluctuate, sometimes rapidly or unpredictably, as the stock and bond markets fluctuate. Market risk may affect a single issuer, industry, or sector of the economy, or it may affect the market as a whole.

Limited capitalization risk: The risk that securities of smaller capitalization companies tend to be more volatile and less liquid than securities of larger capitalization companies. This can have a disproportionate effect on the market price of smaller capitalization companies and affect the Fund's ability to purchase or sell these securities. In general, smaller capitalization companies are more vulnerable than larger companies to adverse business or economic developments and they may have more limited resources.

IPOs risk: The purchase of shares issued in IPOs may expose the Fund to the risks associated with issuers that have no operating history as public companies, as well as to the risks associated with the sectors of the market in which the issuer operates. The market for IPO shares may be volatile, and share prices of newly-public companies may fluctuate significantly over a short period of time.

UBS Global Asset Management
5

may have limited legal recourse in the event of default. Also, foreign securities are sometimes less liquid and more difficult to sell and to value than securities of US issuers. These risks are greater for investments in emerging market issuers. In addition, investments in emerging market issuers may decline in value because of unfavorable foreign government actions, greater risks of political instability or the absence of accurate information about emerging market issuers.

Asset allocation risk: The risk that the Fund may allocate assets to an asset category that performs poorly relative to other asset categories.

Non-diversification risk: The Fund is a non-diversified investment company, which means that the Fund may invest more of its assets in a smaller number of issuers than a diversified investment company. As a non-diversified fund, the Fund's share price may be more volatile and the Fund has a greater potential to realize losses upon the occurrence of adverse events affecting a particular issuer.

Derivatives risk: The value of "derivatives"—so-called because their value "derives" from the value of an underlying asset, reference rate or index—may rise or fall more rapidly than other investments. For some derivatives, it is possible for the Fund to lose more than the amount it invested in the derivative. The risk of investing in certain derivative instruments also may include liquidity, interest rate, market, credit and management risks, mispricing or valuation complexity. These risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Short sales risk: There are certain unique risks associated with the use of short sales strategies. When selling a security short, the Advisor will sell a security it does not own at the then-current market price and then borrow the security to deliver to the buyer. The Fund is then obligated to buy the security on a later date so it can return the security to the lender. Short sales therefore involve the risk that the Fund will incur a loss by subsequently buying a security at a higher price than the price at which the Fund previously sold the security short. This would occur if the securities lender required the Fund to deliver the securities the Fund had borrowed at the commencement of the short sale and the Fund was unable to either purchase the security at a favorable price or to borrow the security from another securities lender. If this occurs at a time when other short sellers of the sale security also want to close out their positions, a "short squeeze" can occur. A short squeeze occurs when demand is greater than supply for the security sold short. Moreover, because a Fund's loss on a short sale arises from increases in the value of the security sold short, such loss, like the price of the security sold short, is theoretically unlimited. By contrast, a Fund's loss on a long position arises from decreases in the value of the security and therefore is limited by the fact that a security's value cannot drop below zero. It is possible that the Fund's securities held long will decline in value at the same time that the value of the securities sold short increases, thereby increasing the potential for loss.

Leverage risk associated with financial instruments: The use of financial instruments, including derivatives, to increase potential returns may cause the Fund to be more volatile than if it had not been leveraged. The use of leverage may also accelerate the velocity of losses and can result in losses to the Fund that exceed the amount originally invested.

Leverage risk associated with borrowing: The Fund may borrow money from banks to purchase investments for the Fund, which is a form of leverage. If the Fund borrows money to purchase securities and the Fund's investments decrease in value, the Fund's losses will be greater than if the Fund did not borrow money for investment purposes. In addition, if the return on an investment purchased with borrowed funds is not sufficient to cover the cost of borrowing, then the net income of the Fund would be less than if borrowing were not used.

Investing in other funds risks: The Fund's investment performance is affected by the investment performance of the underlying funds in which the Fund may invest. Through its investment in the underlying funds, the Fund is subject to the risks of the underlying funds' investments and subject to the underlying funds' expenses.

Investment results

UBS Global Asset Management
6

consumers. Life of class performance for the BofA Merrill Lynch US Treasury 1-5 Year Index, the MSCI World Free Index (net) and the US Consumer Price Index (CPI) is as of the inception month end. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance for the Fund is available at http://globalam-us.ubs.com/corpweb/performance.do.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. In addition, the after-tax returns shown are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns for other classes will vary from the Class Y shares' after-tax returns shown.

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			Life of class
Class A (1/27/05)
Return before taxes		20.32	%		1.11	%
Class B (1/27/05)
Return before taxes		21.31			1.22
Class C (1/27/05)
Return before taxes		25.36			1.46
Class Y (1/27/05)
Return before taxes		27.33			2.57
Return after taxes on distributions		25.30			0.79
Return after taxes on distributions and sale of fund shares		17.91			1.80
BofA Merrill Lynch US Treasury 1-5 Year Index		0.23			4.49
MSCI World Free Index (net)		29.99			2.52
US Consumer Price Index (CPI)		2.72			2.56

(Indices reflect no deduction for fees, expenses or taxes, except for the MSCI World Free Index (net) which reflects no deduction for fees and expenses.)

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Curt Custard, portfolio manager of the Fund since 2008.

• Andreas Koester, portfolio manager of the Fund since 2009.

• Jonathan Davies, portfolio manager of the Fund since 2009.

• Phillip Torres, portfolio manager of the Fund since 2010.

Purchase & sale of Fund shares: You may purchase, redeem or exchange shares of the Fund on any business day, which is any day the New York Stock Exchange is open for business. You may purchase, redeem or exchange shares of the Fund either through a financial advisor or directly from the Fund. In general, the minimum initial investment is $1,000 and the minimum subsequent investment is $100.

Tax information

The dividends and distributions you receive from the Fund are taxable and will generally be taxed as ordinary income, capital gains, or some combination of both, unless you are investing through a tax deferred arrangement, such as a 401(k) plan or an individual retirement account.

Payments to broker/dealers and other financial intermediaries If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your financial advisor to recommend the Fund over another investment. Ask your financial advisor or visit your financial intermediary's Web site for more information.

UBS Global Asset Management
7

UBS Global Allocation Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

	Class A			Class B⁽¹⁾			Class C			Class Y
Maximum front-end sales charge (load) imposed on purchases (as a % of offering price)		5.50	%	None			None			None
Maximum contingent deferred sales charge (load) (CDSC) (as a % of purchase or sales price, whichever is less)	None				5.00	%		1.00	%	None
Redemption fee (as a percentage of amount redeemed within 90 days of purchase, if applicable)		1.00	%		1.00	%		1.00	%		1.00	%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN 485(B) FILING]

Class A

Class B

Class C

Class Y

Management fees

[0.72

Distribution and/or service
(12b-1) fees

0.25

1.00

None

Other expenses

[__]

Acquired fund fees and
expenses

[__]

Total annual fund operating
expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management
fee waiver/expense
reimbursements⁽²⁾

[__]

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses), through the period ending October 27, 2011, do not exceed 1.35% for Class A shares, 2.10% for Class B shares, 2.10% for Class C shares and 1.10% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
8

indicated and then sell all of your shares at the end of those periods unless otherwise stated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The costs described in the example reflect the expenses of the Fund that would result from the contractual fee waiver and expense reimbursement agreement with the Advisor for the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 year

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

The Fund invests in equity and fixed income securities of issuers located within and outside the United States. Under normal circumstances, the Fund will allocate its assets between fixed income securities and equity securities, including securities of issuers in both developed (including the United States) and emerging markets countries. Investments in fixed income securities may include, but are not limited to, debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations, mortgage-backed securities and asset-backed securities. These securities will have an initial maturity of more than one year and may be either investment grade or high yield (lower-rated) securities. Investments in equity securities may include, but are not limited to, common stock and preferred stock. The Fund may invest in other open-end investment companies advised by the Advisor to gain exposure to certain asset classes.

Management process

The Fund is a multi-asset fund.

The Fund's risk is carefully monitored with consideration given to the risk generated by individual positions, sector, country and currency views.

Main risks

UBS Global Asset Management
9

Foreign investing risk: The value of the Fund's investments in foreign securities may fall due to adverse political, social and economic developments abroad and due to decreases in foreign currency values relative to the US dollar. Investments in foreign government bonds involve special risks because the Fund may have limited legal recourse in the event of default. Also, foreign securities are sometimes less liquid and more difficult to sell and to value than securities of US issuers. These risks are greater for investments in emerging market issuers. In addition, investments in emerging market issuers may decline in value because of unfavorable foreign government actions, greater risks of political instability or the absence of accurate information about emerging market issuers.

Asset allocation risk: The risk that the Fund may allocate assets to an asset category that performs poorly relative to other asset categories.

UBS Global Asset Management
10

Investment results

The performance information that follows shows the Fund's performance information in a bar chart and an average annual total returns table. The information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns compare with those of a broad measure of market performance. The MSCI World Free Index (net) shows how the Fund's performance compares to an index that is designed to measure the equity market performance of developed markets. The Citigroup World Government Bond Index shows how the Fund's performance compares to an index composed of straight (i.e., not floating rate or index-linked) government bonds with a one-year minimum maturity. The GSMI Mutual Fund Index shows how the Fund's performance compares to an index compiled by the Advisor that is constructed as follows: 65% MSCI All Country World Index, 15% Citigroup World Government Bond ex US Index, 15% Citigroup US Government Bond Index, 2% J.P. Morgan Emerging Markets Bond Index Global (EMBI Global),and 3% BofA Merrill Lynch US High Yield Cash Pay Constrained Index. Life of class performance for the MSCI World Free Index (net) and the GSMI Mutual Fund Index is as of the inception month end. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance for the Fund is available at http://globalam-us.ubs.com/corpweb/performance.do.

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			5 years			10 years			Life of class
Class A (6/30/97)
Return before taxes		27.83	%		0.62	%		4.66	%		4.60	%
Class B (12/13/01)
Return before taxes		29.09			0.68			N/A			5.06
Class C (11/22/01)⁽¹⁾
Return before taxes		33.20			0.99			N/A			4.99
Class Y (8/31/92)
Return before taxes		35.68			2.06			5.52			7.19
Return after taxes on distributions		32.71			(0.01	)		3.76			5.09
Return after taxes on distributions and sale of fund shares		23.36			0.95			4.00			5.19
Russell 3000 Index		28.34			0.77			(0.20	)		*
MSCI World Free Index (net)		29.99			2.01			(0.24	)		*
Citigroup World Government Bond Index		2.55			4.51			6.63			*
GSMI Mutual Fund Index		24.98			4.01			3.28			*

(Indices reflect no deduction for fees, expenses or taxes, except for the MSCI World Free Index (net) which reflects no deduction for fees and expenses.)

* Average annual total returns for the life of each class were as follows: (1) Russell 3000 Index: Class A—4.06%; Class B—2.59%; Class C—2.46%; Class Y—8.15%; (2) MSCI World Free Index (net): Class A—3.40%; Class B—3.84%; Class C—3.87%; Class Y—6.65%; (3) Citigroup World Government Bond Index: Class A—6.23%; Class B—8.02%; Class C—8.00%; Class Y—6.39%; and (4) GSMI Mutual Fund Index: Class A—5.45%; Class B—5.97%; Class C—6.00%; Class Y—7.72%.

¹ Prior to September 30, 2003, Class C shares were subject to a maximum front-end sales charge of 1.00%; this front-end sales charge is not reflected in the annual average returns presented for the Class C shares shown above.

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Curt Custard, portfolio manager of the Fund since 2009.

• Andreas Koester, portfolio manager of the Fund since 2009.

• Jonathan Davies, portfolio manager of the Fund since 2009.

UBS Global Asset Management
11

Tax information

UBS Global Asset Management
12

UBS Global Frontier Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Fees and expenses

Shareholder fees (fees paid directly from your investment)

	Class A			Class C			Class Y
Maximum front-end sales charge (load) imposed on purchases (as a % of offering price)		5.50	%	None			None
Maximum contingent deferred sales charge (load) (CDSC) (as a % of purchase or sales price, whichever is less)	None				1.00	%	None
Redemption fee (as a percentage of amount redeemed within 90 days of purchase, if applicable)		1.00	%		1.00	%		1.00	%

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN 485(B) FILING]

Class A

Class C

Class Y

Management fees

[0.95

Distribution and/or service (12b-1) fees

0.25

1.00

None

Other expenses

[__]

Acquired fund fees and expenses

[__]

Total annual fund operating expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating expenses
after management fee waiver/expense
reimbursements⁽²⁾

[__]

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses, securities loan fees and dividend expenses for securities sold short) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses, securities loan fees and dividend expenses for securities sold short), through the period ending October 27, 2011, do not exceed 1.40% for Class A shares, 2.15% for Class C shares and 1.15% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
13

expenses remain the same. The costs described in the example reflect the expenses of the Fund that would result from the contractual fee waiver and expense reimbursement agreement with the Advisor for the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 year

10 years

Class A

$[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

In order to achieve the Fund's investment objective, the Advisor employs an enhancement to its global securities (allocation) strategy ("Global Securities (Allocation) Strategy"). The Advisor's Global Securities (Allocation) Strategy seeks to provide exposure to the major asset classes of the global markets and is currently utilized by other funds and products managed by the Advisor, including the UBS Global Allocation Fund, a series of the Trust, and the UBS Global Securities Relationship Fund, a series of UBS Relationship Funds (the "GSR Fund"). The Advisor enhances its Global Securities (Allocation) Strategy with respect to the Fund by increasing the Fund's exposure to the global markets through the use of leverage to achieve higher returns than the Global Securities (Allocation) Strategy typically with equity-like risk. However, when warranted by market conditions, the Advisor will attempt to limit the Fund's equity risk through active asset allocation.

The Fund principally invests directly or indirectly in equity and fixed income securities and other financial instruments to gain exposure to issuers located within and outside the United States. In connection with its Global Securities (Allocation) Strategy, under normal circumstances the Advisor will allocate the exposure of the Fund's assets between fixed income securities and equity securities, including securities of issuers in both developed (including the United States) and emerging markets countries. The Fund may invest directly in such securities and financial instruments and/or indirectly in such investments by investing in shares of open-end investment companies ("Underlying Funds"), including open-end investment companies advised by the Advisor. In addition, the Fund will increase its exposure to the global markets through the use of leverage. Leverage by the Fund generally will be achieved by entering into total return swap agreements with respect to the return of the GSR Fund. Alternatively, the Fund may achieve leverage by engaging in futures contracts with respect to securities or indices.

Investments by the Fund or an Underlying Fund in fixed income securities may include, but are not limited to, debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations, mortgage-backed securities and asset-backed securities. These securities will have an initial maturity of more than one year and may be either investment grade or high yield (lower-rated) securities. Investments by the Fund or an Underlying Fund in equity securities may include, but are not limited to, common stock and preferred stock. The Fund may invest in equity securities of issuers in any capitalization range based on market conditions and in accordance with its investment objective.

The Fund and the Underlying Funds may, but are not required to, use derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund and the Underlying Funds may invest include options, futures, forward agreements, swap agreements (including, but not limited to total return, interest rate and credit default swaps), credit-linked securities, equity participation notes and equity linked notes.

In particular, the Fund generally seeks to increase its exposure to the global markets through the use of leverage by investing in total return swap agreements with respect to the return of the GSR Fund. As an alternative to investing in total return swap agreements based on the return of the GSR Fund, the Fund may also leverage by borrowing from banks to the extent permitted by the 1940 Act to invest additional assets in the global markets by investing the borrowed assets in the GSR Fund. The use of leverage by the Fund

UBS Global Asset Management
14

through total return swaps, futures contracts or borrowing, as described above, is permitted to range between 0% to 50% of the Fund's total assets (including amounts borrowed), but will typically range between 25% to 40% of the Fund's total assets (including amounts borrowed).

Management process

The Advisor's Global Securities (Allocation) Strategy is focused on investment fundamentals.

Under the Global Securities (Allocation) Strategy, the Advisor chooses investments for the Fund and the Underlying Funds by:

• Identifying asset classes that appear to be temporarily mispriced.

• Analyzing the fundamental value of individual securities in order to estimate their relative value and attractiveness, and to identify securities for investment that are underpriced relative to their fundamental value.

• Identifying and investing in currencies based on identification of discrepancies between market prices and fundamental values.

• Identifying and investing in strategies or specific securities that serve to mitigate or manage investment risk exposures resulting from investments in other assets or asset classes.

The Fund's risk is carefully monitored with consideration given to the risk generated by individual positions, sector, country and currency views.

The Advisor enhances its Global Securities (Allocation) Strategy with respect to the Fund by increasing the Fund's exposure to the global markets through the use of leverage to achieve higher returns than the Global Securities (Allocation) Strategy typically with equity-like risk. However, when warranted by market conditions, the Advisor will attempt to limit the Fund's equity risk through active asset allocation. The Advisor's employment of leverage mechanisms with respect to the Fund's portfolio is based on the belief that, in conventional portfolio management, increasing a portfolio's long-term expected return entails adding riskier equity-like assets and reducing the allocation to lower-risk fixed income investments. The Advisor seeks to step beyond this framework to provide higher risk-adjusted returns than the Global Securities (Allocation) Strategy by employing leverage through investing in total return swaps based on the return of the GSR Fund, engaging in futures contracts with respect to securities or indices, or borrowing from banks to the extent permitted by the 1940 Act to purchase additional shares of the GSR Fund to increase the Fund's risk and return in an efficient manner.

Main risks

Investing in other funds risks: The Fund's investment performance is affected by the investment performance of the Underlying Funds in which the Fund may invest. Through its investment in the Underlying Funds, the Fund is subject to the risks of the Underlying Funds' investments and subject to the Underlying Funds' expenses.

UBS Global Asset Management
15

Asset allocation risk: The risk that the Fund may allocate assets to an asset category that performs poorly relative to other asset categories.

UBS Global Asset Management
16

Investment results

The performance information that follows shows the Fund's performance information in a bar chart and an average annual total returns table. The information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns compare with those of a broad measure of market performance. The GSMI Mutual Fund Index shows how the Fund's performance compares to an index compiled by the Advisor that is constructed as follows: 65% MSCI All Country World Index, 15% Citigroup World Government Bond ex US Index, 15% Citigroup US Government Bond Index, 2% J.P. Morgan Emerging Markets Bond Index Global (EMBI Global),and 3% BofA Merrill Lynch US High Yield Cash Pay Constrained Index. Life of class performance for the MSCI World Free Index (net) and the GSMI Mutual Fund Index is as of the inception month end. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance for the Fund is available at http://globalam-us.ubs.com/corpweb/performance.do.

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			Life of class
Class A (7/26/07)
Return before taxes		39.58	%		(12.43	)%
Class C (7/26/07)
Return before taxes		45.76			(11.01	)
Class Y (7/26/07)
Return before taxes		47.99			(10.12	)
Return after taxes on distributions		45.93			(10.86	)
Return after taxes on distributions and sale of fund shares		31.51			(8.78	)
MSCI World Free Index (net)		29.99			(9.43	)
GSMI Mutual Fund Index		24.98			(2.18	)

(Indices reflect no deduction for fees, expenses or taxes, except for the MSCI World Free Index (net) which reflects no deduction for fees and expenses.)

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Curt Custard, portfolio manager of the Fund since 2009.

• Andreas Koester, portfolio manager of the Fund since 2009.

• Jonathan Davies, portfolio manager of the Fund since 2009.

Tax information

UBS Global Asset Management
17

The UBS Funds

More information about the Funds—UBS Dynamic Alpha Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Principal investment strategies

The Fund invests in securities and financial instruments to gain exposure to global equity, global fixed income and cash equivalent markets, including global currencies. The Fund may invest in equity and fixed income securities of issuers located within and outside the United States or in open-end investment companies advised by the Advisor to gain exposure to certain global equity and global fixed income markets. The Fund is a non-diversified fund.

Investments in fixed income securities may include, but are not limited to, debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations and supranationals, inflation protected securities, convertible bonds, mortgage-backed securities, asset-backed securities, equipment trusts and other collateralized debt securities. Investments in fixed income securities may include issuers in both developed (including the United States) and emerging markets.

The Fund may invest in other open-end investment companies advised by the Advisor to gain exposure to certain asset classes. The Fund does not pay fees in connection with its investment in the investment companies advised by the Advisor, but may pay expenses associated with such investments.

The Fund may, but is not required to, use derivative instruments for risk management purposes or as part of the Fund's investment strategies. Generally, derivatives are financial contracts whose value depends upon, or is derived from, the value of an underlying asset, reference rate, or index, and may relate to stocks, bonds, interest rates, currencies or currency exchange rates, and related indexes. Examples of derivatives include options, futures, forward agreements, swap agreements (including, but not limited to, interest rate, total return and credit default swaps), credit-linked securities, equity participation notes and equity linked notes. The Fund may use derivatives to earn income and enhance returns, to manage or adjust the risk profile of the Fund, to replace more traditional direct investments, or to obtain exposure to certain markets. The Fund may invest in derivatives to the extent permitted by the Investment Company Act of 1940, as amended (the "1940 Act"). In addition, the Fund may establish net short or net long positions for individual markets, currencies and securities. The Fund also may sell securities short as part of its investment strategy.

Under certain market conditions, the Fund may invest in companies at the time of their initial public offering (IPO).

To the extent permitted by the 1940 Act, the Fund may borrow money from banks to purchase investments for the Fund. The Fund will adhere to the

UBS Global Asset Management
18

The UBS Funds

More information about the Funds—UBS Dynamic Alpha Fund

SEC's asset coverage requirements for all such borrowings.

Securities selection

The Fund is a multi-asset fund. The asset classes in which the Fund may invest include, but are not limited to, the following: US equities, non-US equities, emerging market equities, US fixed income, non-US fixed income, emerging market debt, high yield fixed income and cash equivalents. Asset allocation decisions are tactical, based upon the Advisor's assessment of valuations and prevailing market conditions in the United States and abroad. Investments also may be made in selected sectors of these asset classes.

Within the equity portion of the Fund's portfolio, the Advisor selects securities whose fundamental values it believes are greater than their market prices. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Advisor bases its estimates of value upon economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices, with the aim of constructing a portfolio of stocks with attractive relative price/value characteristics.

For each security under analysis, the fundamental value estimate is compared to the company's current market price to ascertain whether a valuation anomaly exists. A stock with a market price below (above) the estimated intrinsic or fundamental value would be considered a long (short) candidate for inclusion in the Fund's portfolio. This comparison between price and intrinsic or fundamental value allows comparisons across industries and countries.

While the Advisor's investment decisions with respect to the equity portion of the Fund's portfolio are based primarily on price/value discrepancies as identified by its fundamental valuation process, under certain circumstances the Advisor may utilize growth-oriented strategies within its US equity asset class for a portion of the allocation; but only after subjecting such strategies to a rigorous due diligence process to judge their suitability for the Fund.

To invest in growth equities, the Advisor seeks to invest in companies that possess a dominant market position and franchise, a major technological edge or a unique competitive advantage, in part by using a proprietary quantitative screening system that ranks stocks using a series of growth, valuation and momentum metrics.

In selecting fixed income securities, the Advisor uses an internally developed valuation model that quantifies return expectations for all major bond markets, domestic and foreign. The model employs a qualitative credit review process that assesses the ways in which macroeconomic forces (such as inflation, risk premiums and interest rates) may affect industry trends. Against the output of this model, the Advisor considers the viability of specific debt securities compared to certain qualitative factors, such as management strength, market position, competitive environment and financial flexibility, as well as certain quantitative factors, such as historical operating results, calculation of credit ratios and expected future outlook. The Fund's fixed income investments may reflect a broad range of investment maturities, qualities and sectors, including high yield (lower-rated) securities and convertible debt securities.

The Advisor's fixed income strategy combines judgments about the absolute value of the fixed income universe and the relative value of issuer sectors, maturity intervals, duration of securities, quality and coupon segments and specific circumstances facing the issuers of fixed income securities. Duration measures a fixed income security's price sensitivity to interest rates by indicating the approximate change in a fixed income security's price if interest rates move up or down in 1% increments. Duration management involves adjusting the sensitivity to interest rates of the holdings within a country. The Advisor manages duration by choosing a maturity mix that provides opportunity for appreciation while also limiting interest rate risks.

UBS Global Asset Management
19

The UBS Funds

More information about the Funds—UBS Dynamic Alpha Fund

The Fund's risk is carefully monitored with consideration given to the risk generated by individual position, sector, country and currency views.

The Fund may invest in cash or cash equivalent instruments, including shares of an affiliated investment company. When market conditions warrant, the Fund may make substantial temporary defensive investments in cash equivalents, which may affect the Fund's ability to pursue its investment objective. The Advisor actively manages the Fund. As such, the Fund may have high portfolio turnover, which may result in higher costs for brokerage commissions, transaction costs and taxable gains. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund's performance.

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

• Interest rate risk—The risk that changing interest rates may adversely affect the value of an investment. An increase in prevailing interest rates typically causes the value of fixed income securities to fall, while a decline in prevailing interest rates may cause the market value of fixed income securities to rise. Changes in interest rates will affect the value of longer-term fixed income securities more than shorter-term securities and higher quality securities more than lower quality securities.

• Credit risk—The risk that an issuer may default or otherwise be unable to honor a financial obligation. Bonds with ratings of BB (Standard & Poor's Ratings Group ("S&P")) or Ba (Moody's Investors Service, Inc. ("Moody's")) or below may have increased risks of default. These securities are considered to be predominately speculative with respect to an issuer's capacity to pay interest and repay principal in accordance with the terms of the obligations. Lower-rated bonds are more likely to be subject to an issuer's default or downgrade than investment grade (higher-rated) bonds.

• Government securities risk—Credit risk is the risk that the issuer will not make principal or interest payments when they are due. There are different types of US government securities with different relative levels of credit risk depending on the nature of the particular government support for that security. US government securities may be supported by (i) the full faith and credit of the United States; (ii) the ability of the issuer to borrow from the US Treasury; (iii) the credit of the issuing agency, instrumentality or government-sponsored entity; (iv) pools of assets (e.g., mortgage-backed securities); or (v) the United States in some other way. In some cases, there is even the risk of default. For example, for asset backed securities there is the risk those assets will decrease in value below the face value of the security. Similarly, for certain agency-issued securities there is no guarantee the US government will support the agency if it is unable to meet its obligations. Further, the US government and its agencies and instrumentalities do not guarantee the market value of their securities; consequently, the value of such securities will fluctuate.

• Market risk—The risk that the market value of the Fund's investments will fluctuate as the stock and bond markets fluctuate. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole.

• Limited capitalization risk—The risk that investments in small and medium size companies may be more volatile than investments in larger companies, as small and medium size companies generally experience higher growth and failure rates. The trading volume of these securities is normally lower than that of larger companies. Such securities may be less liquid than others and could make it difficult to sell a security at a time or price desired. Changes in the demand for these securities generally have a disproportionate effect on their market price, tending to make prices rise more in response to buying demand and fall more in response to selling pressure.

UBS Global Asset Management
20

The UBS Funds

More information about the Funds—UBS Dynamic Alpha Fund

• IPOs risk—Companies involved in initial public offerings (IPOs) generally have limited operating histories, and prospects for future profitability are uncertain. Prices of IPOs may also be unstable because of the absence of a prior public market, the small number of shares available for trading and limited investor information. IPOs will frequently be sold within 12 months of purchase. This may result in increased short-term capital gains, which will be taxable to shareholders as ordinary income.

• Foreign investing risk—The risk that prices of the Fund's investments in foreign securities may go down because of unfavorable foreign government actions, political instability or the absence of accurate information about foreign issuers. Also, a decline in the value of foreign currencies relative to the US dollar will reduce the value of securities denominated in those currencies. Also, foreign securities are sometimes less liquid and harder to sell and to value than securities of US issuers. Each of these risks is more severe for securities of issuers in emerging market countries.

• Asset allocation risk—The risk that the Fund may allocate assets to an asset category that underperforms other asset categories. For example, the Fund may be overweighted in equity securities when the stock market is falling and the fixed income market is rising.

• Non-diversification risk—The risk that the Fund will be more volatile than a diversified fund because the Fund invests its assets in a smaller number of issuers. The gains and losses on a single security may, therefore, have a greater impact on the Fund's net asset value.

• Derivatives risk—Derivatives involve risks different from, and possibly greater than, the risks associated with investing directly in securities and other instruments. Derivatives require investment techniques and risk analyses different from those of other investments. If the Advisor incorrectly forecasts the value of securities, currencies, interest rates, or other economic factors in using derivatives, the Fund might have been in a better position if the Fund had not entered into the derivatives. While some strategies involving derivatives can protect against the risk of loss, the use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a swap agreement or other derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund to lose more than the amount the Fund invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

• Short sales risk—There are certain unique risks associated with the use of short sales strategies. When selling a security short, the Advisor will sell a security it does not own at the then-current market price and then borrow the security to deliver to the buyer. The Fund is then obligated to buy the security on a later date so it can return the security to the lender. Short sales therefore involve the risk that the Fund will incur a loss by subsequently buying a security at a higher price than the price at which the Fund previously sold the security short. This would occur if the securities lender required the Fund to deliver the securities the Fund had borrowed at the commencement of the short sale and the Fund was unable to either purchase the security at a favorable price or to borrow the security from another securities lender. If this occurs at a time when other short sellers of the sale security also want to close out their positions, a "short squeeze" can occur. A short squeeze occurs

UBS Global Asset Management
21

The UBS Funds

More information about the Funds—UBS Dynamic Alpha Fund

when demand is greater than supply for the security sold short. Moreover, because a Fund's loss on a short sale arises from increases in the value of the security sold short, such loss, like the price of the security sold short, is theoretically unlimited. By contrast, a Fund's loss on a long position arises from decreases in the value of the security and therefore is limited by the fact that a security's value cannot drop below zero. It is possible that the Fund's securities held long will decline in value at the same time that the value of the securities sold short increases, thereby increasing the potential for loss.

• Leverage risk—The Fund may borrow money from banks to purchase investments for the Fund, which is a form of leverage. If the Fund borrows money to purchase securities and the Fund's investments decrease in value, the Fund's losses will be greater than if the Fund did not borrow money for investment purposes. In addition, if the return on an investment purchased with borrowed funds is not sufficient to cover the cost of borrowing, then the net income of the Fund will be less than if borrowing were not used. Derivatives that the Fund may use may also create leverage. Derivatives that involve leverage can result in losses to the Fund that exceed the amount originally invested in the derivative instruments.

• Investing in other funds risks—The investment performance of the Fund is affected by the investment performance of the underlying funds in which the Fund invests. Through its investment in the underlying funds, the Fund is subject to the risks of the underlying funds' investments and subject to the underlying funds' expenses.

Other information

Commodity pool operator exemption—The Trust has claimed an exclusion from the definition of the term "commodity pool operator" under the Commodity Exchange Act ("CEA"), and, therefore, is not subject to registration or regulation as a pool operator under the CEA.

UBS Global Asset Management
22

The UBS Funds

More information about the Funds—UBS Global Allocation Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Principal investment strategies

Investments in fixed income securities may include, but are not limited to, debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations, mortgage-backed securities and asset-backed securities. These securities will have an initial maturity of more than one year. The Fund may invest in both investment grade and high yield (lower-rated) securities. Investments in equity securities may include, but are not limited to, common stock and preferred stock. The Fund may invest in other open-end investment companies advised by the Advisor to gain exposure to certain asset classes. The Fund does not pay fees in connection with its investment in the investment companies advised by the Advisor, but may pay expenses associated with such investments. In addition, the Fund may invest in other open-end investment companies, exchange-traded funds and similarly structured pooled investments in order to provide exposure to equity and fixed-income markets. To the extent that the Fund invests in securities of other open-end investment companies, exchange-traded funds and similarly structured pooled investments, the Fund will bear the fees and expenses of such vehicles in addition to the fees and expenses of its own operation.

The Fund invests its assets in investments that are economically tied to a number of countries throughout the world. [TO BE PROVIDED IN RULE 485(B) FILING: As of June 30, 2010, the Fund was invested in securities of issuers from [ ] countries either directly or through its investments in other investment companies, and approximately [ ]% of its assets were invested in US markets.] Under normal market conditions, the Fund will invest significantly (at least 40-80% of its total assets—unless market conditions are not deemed favorable by the Advisor in which case the Fund would invest at least 30% of its total assets) in companies organized or having their principal place of business outside the United States or doing a substantial amount of business outside the United States.

Securities selection

The Fund is a multi-asset fund, and invests in each of the major asset classes: US fixed income, US equities, international fixed income (including emerging markets), and international equities (including emerging markets), based upon the Advisor's assessment of prevailing market conditions in the United States and abroad.

Within the equity portion of the Fund's portfolio, the Advisor generally selects securities whose fundamental values it believes are greater than their market prices. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Advisor bases its estimates of value upon economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The

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The UBS Funds

More information about the Funds—UBS Global Allocation Fund

Advisor then compares its assessment of a security's value against the prevailing market prices, with the aim of constructing a portfolio of stocks with attractive relative price/value characteristics.

For each security under analysis, the fundamental value estimate is compared to the company's current market price to ascertain whether a valuation anomaly exists.

A stock with a market price below the estimated intrinsic or fundamental value would be considered a candidate for inclusion in the Fund's portfolio. This comparison between price and intrinsic or fundamental value allows comparisons across industries and countries.

Within the equity portion of the Fund's portfolio, the Advisor also may utilize a growth-oriented strategy when investing in US and non-US securities. In selecting growth equities, the Advisor seeks to invest in companies that possess a dominant market position and franchise, a major technological edge or a unique competitive advantage, in part by using a proprietary quantitative screening system that ranks stocks using a series of growth, valuation and momentum metrics, including earnings revision trends, expected earnings growth rates, sales acceleration, price earnings multiples and positive security price momentum. The Advisor expects that these companies can sustain an above average return on invested capital at a higher level and over a longer period of time than is reflected in the current market prices.

The Fund's risk is carefully monitored with consideration given to the risk generated by individual positions, sector, country and currency views.

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

• Interest rate risk—The risk that changing interest rates may adversely affect the value of an investment. An increase in prevailing interest rates typically causes the value of fixed income securities to fall, while a decline in prevailing interest rates may cause the market value of fixed income securities to rise. Changes in interest rates will affect the value of longer-term fixed income securities more than shorter-term securities and higher quality securities more than lower quality securities.

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The UBS Funds

More information about the Funds—UBS Global Allocation Fund

• Credit risk—The risk that an issuer may default or otherwise be unable to honor a financial obligation. Bonds with ratings of BB (S&P) or Ba (Moody's) or below may have increased risks of default. These securities are considered to be predominately speculative with respect to an issuer's capacity to pay interest and repay principal in accordance with the terms of the obligations. Lower-rated bonds are more likely to be subject to an issuer's default or downgrade than investment grade (higher-rated) bonds.

• Prepayment or call risk—The risk that issuers will prepay fixed rate obligations when interest rates fall, forcing the Fund to reinvest in obligations with lower interest rates than the original obligations.

• Market risk—The risk that the market value of the Fund's investments will fluctuate as the stock and bond markets fluctuate. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole.

• Limited capitalization risk—The risk that investments in small and medium size companies may be more volatile than investments in larger companies, as small and medium size companies generally experience higher growth and failure rates. The trading volume of these securities is normally lower than that of larger companies. Such securities may be less liquid than others and could make it difficult to sell a security at a time or price desired. Changes in the demand for these securities generally have a disproportionate effect on their market price, tending to make prices rise more in response to buying demand and fall more in response to selling pressure.

• Foreign investing risk—The risk that prices of the Fund's investments in foreign securities may go down because of unfavorable foreign government actions, political instability or the absence of accurate information about foreign issuers. Also, a decline in the value of foreign currencies relative to the US dollar will reduce the value of securities denominated in those currencies. Also, foreign securities are sometimes less liquid and harder to sell and to value than securities of US issuers. Each of these risks is more severe for securities of issuers in emerging market countries.

• Asset allocation risk—The risk that the Fund may allocate assets to an asset category that underperforms other asset categories. For example, the Fund may be overweighted in equity securities when the stock market is falling and the fixed income market is rising.

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The UBS Funds

More information about the Funds—UBS Global Allocation Fund

use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a swap agreement or other derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund to lose more than the amount the Fund invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

• Leverage risk associated with financial instruments—Certain derivatives that the Fund may use may create leverage. Derivatives that involve leverage can result in losses to the Fund that exceed the amount originally invested in the derivatives.

Other information

Commodity pool operator exemption—The Trust has claimed an exclusion from the definition of the term "commodity pool operator" under the CEA, and, therefore, is not subject to registration or regulation as a pool operator under the CEA.

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to obtain superior long-term returns on capital.

Principal investment strategies

The Fund principally invests directly or indirectly in equity and fixed income securities and other financial instruments to gain exposure to issuers located within and outside the United States. In connection with its Global Securities (Allocation) Strategy, under normal circumstances the Advisor will allocate the exposure of the Fund's assets between fixed income securities and equity securities. The Fund may invest directly in such securities and financial instruments and/or indirectly in such investments by investing in shares of open-end investment companies ("Underlying Funds"), including open-end investment companies advised by the Advisor. In addition, the Fund will increase its exposure to the global markets through the use of leverage. Leverage by the Fund generally will be achieved by entering into total return swap agreements with respect to the return of the GSR Fund. Alternatively, the Fund may achieve leverage by engaging in futures contracts with respect to securities or indicies.

Investments by the Fund or an Underlying Fund in fixed income securities may include, but are not limited to, debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations, mortgage-backed securities and asset-backed securities. These securities will have an initial maturity of more than one year. The Fund and certain Underlying Funds may invest in both investment grade and high yield (lower-rated) securities. Investments by the Fund or an Underlying Fund in equity securities may include, but are not limited to, common stock and preferred stock. The Fund may invest in equity securities of issuers in any capitalization range based on market conditions and in accordance with its investment objective.

[TO BE PROVIDED IN RULE 485(B) FILING:] As of June 30, 2010, the Fund was invested in securities of issuers from [ ] countries either directly or through its investments in other investment companies, and approximately [ ]% of its assets were invested in US markets.] Under normal market conditions, the Fund will invest significantly (at least 40-60% of its total assets—unless market conditions are not deemed favorable by the Advisor in which case the Fund would invest at least 30% of its total assets) in companies organized or having their principal place of business outside the United States or doing a substantial amount of business outside the United States. The Fund allocates its assets among various regions and countries, including the United States (but in no less than three different countries). The Fund considers a company that derives at least 50% of its revenue from business outside the United States or has at least 50% of its assets outside the United States as doing a substantial amount of business outside the United States.

The Fund and the Underlying Funds may, but are not required to, use derivative instruments for risk management purposes or as part of the Fund's or an Underlying Fund's investment strategies. Generally, derivatives are financial contracts whose value depends upon, or is derived from, the value of an

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

underlying asset, reference rate, or index, and may relate to stocks, bonds, interest rates, total return rates, currencies or currency exchange rates, and related indexes. Examples of derivatives include options, futures, forward agreements, swap agreements (including, but not limited to, total return, interest rate and credit default swaps), credit-linked securities, equity participation notes and equity linked notes. The Fund or an Underlying Fund may use derivatives to earn income and enhance returns, to manage or adjust the risk profile of the Fund, to replace more traditional direct investments, or to obtain exposure to certain markets. The Fund and the Underlying Funds may invest in derivatives to the extent permitted by the 1940 Act.

In particular, the Fund generally seeks to increase its exposure to the global markets through the use of leverage by investing in total return swap agreements with respect to the return of the GSR Fund. In a typical total return swap agreement, the Fund will receive the price appreciation (or depreciation) of the GSR Fund from the counterparty to the swap agreement in exchange for a payment from the Fund based on LIBOR plus a spread.

As an alternative to investing in total return swap agreements based on the return of the GSR Fund, the Fund may also leverage by borrowing from banks to the extent permitted by the 1940 Act to invest additional assets in the global markets by investing the borrowed assets in the GSR Fund. The Fund will adhere to the SEC's asset coverage requirements for all such borrowings. The Fund also may leverage by engaging in futures contracts with respect to securities or indicies.

The use of leverage by the Fund through total return swaps, futures contracts or borrowing, as described above, is permitted to range between 0% to 50% of the Fund's total assets (including amounts borrowed), but will typically range between 25% to 40% of the Fund's total assets (including amounts borrowed).

The Fund may invest all or a portion of its assets in Underlying Funds to gain exposure to various asset classes. For instance, the Fund may invest a portion of its assets in the UBS Opportunistic Loan Relationship Fund series of UBS Relationship Funds to gain exposure to the global loan market. The Fund does not pay fees in connection with its investments in the Underlying Funds, but may pay expenses associated with such investments.

In addition, the Fund may invest in other open-end investment companies, exchange-traded funds and similarly structured pooled investments in order to provide exposure to equity and fixed-income markets. To the extent that the Fund invests in securities of other open-end investment companies, exchange-traded funds and similarly structured pooled investments, the Fund will bear the fees and expenses of such vehicles in addition to the fees and expenses of its own operation.

Asset allocation and securities selection

The Advisor's Global Securities (Allocation) Strategy is focused on investment fundamentals. The Advisor believes that investment fundamentals determine and describe future cash flows that define fundamental investment value. The Advisor tries to identify and exploit periodic discrepancies between market prices and fundamental value. These price/value discrepancies are used as the building blocks for portfolio construction.

To achieve the Fund's investment objective, under normal market conditions, the Advisor purchases securities or shares of Underlying Funds to employ the Advisor's Global Securities (Allocation) Strategy, which utilizes active asset allocation strategies across various asset classes based on the Advisor's assessment of prevailing market conditions in the US and abroad. The Advisor enhances its Global Securities (Allocation) Strategy with respect to the Fund by increasing the Fund's exposure to the global markets through the use of leverage to achieve higher returns than the Global Securities (Allocation) Strategy typically with equity-like risk. However, when warranted by market conditions, the Advisor will attempt to limit the Fund's equity risk through active asset allocation. The asset classes among which the Advisor allocates the Fund's portfolio are:

• US equities;

• International equities;

• Emerging markets equities;

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

• US fixed income;

• International fixed income;

• Emerging markets fixed income; and

• US high yield fixed income.

The Fund seeks to outperform the GSMI Mutual Fund Index, which is the benchmark for the Advisor's Global Securities (Allocation) Strategy. This index is compiled by the Advisor and is a composite of five indexes provided by independent data providers: 65% MSCI All Country World Index, 15% Citigroup World Government Bond ex US Index, 15% Citigroup US Government Bond Index, 2% J.P. Morgan Emerging Markets Bond Index Global and 3% BofA Merrill Lynch US High Yield Cash Pay Constrained Index. The Advisor also seeks for the Fund to outperform and typically have equity-like risk similar to the MSCI World Free Index (net US), a broad-based index that represents the US and developed international equity markets in terms of capitalization and performance. However, when warranted by market conditions, the Advisor will attempt to limit the Fund's equity risk through active asset allocation.

Under the Global Securities (Allocation) Strategy, the Advisor chooses investments for the Fund and the Underlying Funds by:

• Identifying asset classes that appear to be temporarily mispriced.

• Analyzing the fundamental value of individual securities in order to estimate their relative value and attractiveness, and to identify securities for investment that are underpriced relative to their fundamental value.

• Identifying and investing in currencies based on identification of discrepancies between market prices and fundamental values.

• Identifying and investing in strategies or specific securities that serve to mitigate or manage investment risk exposures resulting from investments in other assets or asset classes.

Within the equity portion of the Fund's or an Underlying Fund's portfolio, the Advisor generally selects securities whose fundamental values it believes are greater than their market prices. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Advisor bases its estimates of value upon economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices, with the aim of constructing a portfolio of stocks with attractive relative price/value characteristics.

For each security under analysis, the fundamental value estimate is compared to the company's current market price to ascertain whether a valuation anomaly exists.

A stock with a market price below the estimated intrinsic or fundamental value would be considered a candidate for inclusion in the Fund's or an Underlying Fund's portfolio. This comparison between price and intrinsic or fundamental value allows comparisons across industries and countries.

Within the equity portion of the Fund's or an Underlying Fund's portfolio, the Advisor also may utilize a growth-oriented strategy when investing in US and non-US securities. In selecting growth equities, the Advisor seeks to invest in companies that possess a dominant market position and franchise, a major technological edge or a unique competitive advantage, in part by using a proprietary quantitative screening system that ranks stocks using a series of growth, valuation and momentum metrics, including earnings revision trends, expected earnings growth rates, sales acceleration, price earnings multiples and positive security price momentum. The Advisor expects that these companies can sustain an above average return on invested capital at a higher level and over a longer period of time than is reflected in the current market prices.

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

credit review process that assesses the ways in which macroeconomic forces (such as inflation, risk premiums and interest rates) may affect industry trends. Against the output of this model, the Advisor considers the viability of specific debt securities compared to certain qualitative factors, such as management strength, market position, competitive environment and financial flexibility, as well as certain quantitative factors, such as historical operating results, calculation of credit ratios and expected future outlook.

The Fund's and the Underlying Funds' risks are carefully monitored with consideration given to the risk generated by individual positions, sector, country and currency views.

In addition to the strategies described above, the Advisor may also determine that it is appropriate or preferable, based on cost, liquidity and value-added considerations, for the Fund to invest in passively-managed investment vehicles, including, but not limited to, index funds and exchange-traded funds, in order to gain exposure to the major asset classes in which the Fund invests. Such investments by the Fund would be subject to the SEC limitations on investments in other investment company securities.

The Advisor's employment of leverage mechanisms with respect to the Fund's portfolio is based on the belief that, in conventional portfolio management, increasing a portfolio's long-term expected return entails adding riskier equity-like assets and reducing the allocation to lower-risk fixed income investments. The Advisor seeks to step beyond this framework to provide higher risk-adjusted returns than the Global Securities (Allocation) Strategy by employing leverage through investing in total return swaps based on the return of the GSR Fund, engaging in futures contracts with respect to securities or indices, or borrowing from banks to the extent permitted by the 1940 Act to purchase additional shares of the GSR Fund to increase the Fund's risk and return in an efficient manner.

The Fund and the Underlying Funds may also invest in cash or cash equivalent instruments. When market conditions warrant, the Fund or an Underlying Fund may make substantial temporary defensive investments in cash equivalents and high grade fixed income securities, which may affect its ability to pursue its investment objective. The Advisor actively manages the Fund and the Underlying Funds. As such, the Fund or an Underlying Fund may have high portfolio turnover, which may result in higher costs for brokerage commissions, transaction costs and taxable gains. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund's performance.

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund and the Underlying Funds are:

• Investing in other funds risk—The Fund's investment performance is affected by the investment performance of the Underlying Funds in which the Fund may invest. Thus, the Fund's performance is affected by the allocation of its assets among the Underlying Funds and their ability to meet their investment objectives, in addition to any direct investments made by the Fund. The Advisor may not accurately assess the attractiveness or risk potential of particular Underlying Funds, asset classes or investment styles. In addition, through its investment in the Underlying Funds, the Fund is subject to the risks of the Underlying Funds' investments and their expenses.

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

• Market risk—The risk that the market value of the Fund's or an Underlying Fund's investments will fluctuate as the stock and bond markets fluctuate. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole.

• Credit risk—The risk that an issuer may default or otherwise be unable to honor a financial obligation. Bonds with ratings of BB (S&P) or Ba (Moody's) or below may have increased risks of default. These securities are considered to be predominately speculative with respect to an issuer's capacity to pay interest and repay principal in accordance with the terms of the obligations. Lower-rated bonds are more likely to be subject to an issuer's default or downgrade than investment grade (higher-rated) bonds.

• Prepayment or call risk—The risk that issuers will prepay fixed rate obligations when interest rates fall, forcing the Fund or an Underlying Fund to reinvest in obligations with lower interest rates than the original obligations.

• Foreign investing risk— The risk that prices of the Fund's or an Underlying Fund's investments in foreign securities may go down because of unfavorable foreign government actions, political instability or the absence of accurate information about foreign issuers. Also, a decline in the value of foreign currencies relative to the US dollar will reduce the value of securities denominated in those currencies. Also, foreign securities are sometimes less liquid and harder to sell and to value than securities of US issuers. Each of these risks is more severe for securities of issuers in emerging market countries.

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

• Asset allocation risk—The risk that the Fund may allocate assets to an asset category or an Underlying Fund that underperforms other asset categories. For example, the Fund may be overweighted in the equity asset class when the stock market is falling and the fixed income market is rising.

• Derivatives risk—Derivatives involve risks different from, and possibly greater than, the risks associated with investing directly in securities and other instruments. Derivatives require investment techniques and risk analyses different from those of other investments. If the Advisor incorrectly forecasts the value of securities, currencies, interest rates, total return rates, or other economic factors in using derivatives, the Fund or an Underlying Fund might have been in a better position if it had not entered into the derivatives. While some strategies involving derivatives can protect against the risk of loss, the use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund or Underlying Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a swap agreement or other derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund or an Underlying Fund to lose more than the amount it invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's or an Underlying Fund's use of derivatives may cause it to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if it had not used such instruments.

Similarly, total return swap transactions involve greater risks than if the Fund had invested in the underlying asset directly. The total rate of return of an investment on which a total return swap agreement is based may exhibit substantial volatility and, in any given period, may be positive or negative for the specified period of the total return swap agreement. In the event the total rate of return of the underlying asset is negative for the specified period of the swap agreement, the Fund will be required to make a payment to the counterparty in addition to the periodic payment required by the swap agreement to cover the decline in value of the underlying asset. The Fund's risk of loss, therefore, is increased because the Fund could lose an amount equal to the decrease in value of the underlying asset for the specified period of time, in addition to the periodic payments required by the total return swap agreement. Total return swap agreements may effectively add leverage to the Fund's portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the notional amount of the swap agreement.

• Leverage risk—The Fund or an Underlying Fund may borrow money from banks to purchase investments, which is a form of leverage, or utilize certain derivatives, which may create leverage. If the Fund or an Underlying Fund borrows money to purchase securities and its investments decrease in value, the Fund's or an Underlying Fund's losses will be greater than if it did not borrow money for investment purposes. In addition, if the return on an investment purchased with borrowed funds is not sufficient to cover the cost of borrowing, then the net income of the Fund or an Underlying Fund will be less than if borrowing were not used. Certain

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The UBS Funds

More information about the Funds—UBS Global Frontier Fund

derivatives, including total return swaps, that the Fund or an Underlying Fund may use may also create leverage. Derivatives that involve leverage can result in losses to the Fund or an Underlying Fund that exceed the amount originally invested in the derivatives.

Other information

Commodity pool operator exemption—The Trust has claimed an exclusion from the definition of the term "commodity pool operator" under the CEA and, therefore, is not subject to registration or regulation as a pool operator under the CEA.

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Managing your fund account

Flexible pricing

Each Fund offers three classes of shares–Class A, Class C and Class Y. The UBS Dynamic Alpha Fund and UBS Global Allocation Fund offers Class B shares to existing shareholders of Class B shares in limited circumstances as described in the section entitled "Class B shares" on page [__]. Each class has different sales charges and ongoing expenses. You can choose the class that is best for you, based on how much you plan to invest and how long you plan to hold your shares of the Fund(s). Class Y shares are only available to certain types of investors.

The Funds have adopted separate plans pertaining to the Class A, Class B and Class C shares of the Funds under rule 12b-1 that allow the Funds to pay service and (for Class B and Class C shares) distribution fees for the sale of the Funds' shares and services provided to shareholders. Because the 12b-1 fees for Class B and Class C shares are paid out of a Fund's assets on an ongoing basis, over time they will increase the cost of your investment and may cost you more than if you paid other types of sales charges, such as the front-end sales charge for Class A shares.

You may qualify for a waiver of certain sales charges on Class A, Class B and Class C shares. See "Sales charge waivers for Class A, Class B and Class C shares" later in this prospectus. You may also qualify for a reduced sales charge on Class A shares. See "Sales charge reductions for Class A shares" later in this prospectus.

Class A shares

Class A shares have a front-end sales charge that is included in the offering price of the Class A shares. This sales charge is paid at the time of purchase and is not invested in a Fund. Each Fund's Class A shares pay an annual service fee of 0.25% of average net assets. Class A shares pay no distribution fees. The ongoing expenses for Class A shares are lower than for Class B and Class C shares.

The Class A sales charges for the Funds are described in the following table:

Class A sales charges

	Sales charge as a percentage of:		Reallowance to selected dealers as
Amount of investment	Offering price	Net amount invested	percentage of offering price
Less than $50,000	5.50%	5.82%	5.00%
$50,000 to $99,999	4.50	4.71	4.00
$100,000 to $249,999	3.50	3.63	3.00
$250,000 to $499,999	2.50	2.56	2.00
$500,000 to $999,999	2.00	2.04	1.75
$1,000,000 and over⁽¹⁾	None	None	May pay up to 1.00⁽²⁾

(1) A contingent deferred sales charge of 1% of the shares' offering price or the net asset value at the time of sale by the shareholder, whichever is less, is charged on sales of shares made within one year of the purchase date. Class A shares representing reinvestment of dividends are not subject to this 1% charge. Withdrawals in the first year after purchase of up to 12% of the value of the fund account under a Fund's Automatic Cash Withdrawal Plan are not subject to this charge.

(2) For sales of $1 million or more, UBS Global Asset Management (US) Inc. pays to the dealer an amount based upon the following schedule: 1.00% on the first $3 million, 0.75% on the next $2 million, and 0.50% on the next $5 million.

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The UBS Funds

If you intend to purchase more than $5 million of Class A shares, you should instead purchase Class Y shares, which have lower on-going expenses.

Class B shares

The Funds have ceased offering Class B shares (with exceptions for existing shareholders for exchanges or reinvesting dividends). New or additional investments into Class B shares, including investments through an automatic investment plan, are no longer permitted. Existing shareholders of Class B shares of UBS Dynamic Alpha Fund and UBS Global Allocation Fund may: (i) continue as Class B shareholders; (ii) continue to reinvest dividends and distributions into Class B shares; and (iii) exchange their Class B shares for Class B shares of other series of the UBS Family of Funds, as permitted by existing exchange privileges. For Class B shares outstanding and Class B shares acquired upon reinvestment of dividends or distributions or through exchanges, Class B share attributes, including the associated Rule 12b-1 plan service and distribution fees, contingent deferred sales charges and conversion features, as applicable, will continue.

Class B shares have a contingent deferred sales charge. When you purchase Class B shares, we invest 100% of your purchase price in Fund shares. However, you may have to pay the deferred sales charge when you sell your Fund shares, depending on how long you own the shares.

Class B shares pay an annual 12b-1 distribution fee of 0.75% of average net assets, as well as an annual 12b-1 service fee of 0.25% of average net assets. If you hold your Class B shares for the period specified below, they will automatically convert to Class A shares, which have lower ongoing expenses.

If you sell Class B shares before the end of the specified period, you will pay a deferred sales charge. We calculate the deferred sales charge by multiplying the lesser of the net asset value of the Class B shares at the time of purchase or the net asset value at the time of sale by the percentage shown below:

	Percentage (based on amount of investment) by which the shares' net asset value is multiplied:
If you sell shares within:	Less than $100,000			$100,000 to $249,999			$250,000 to $499,999			$500,000 to $999,999
1st year since purchase		5	%		3	%		3	%		2	%
2nd year since purchase		4	%		2	%		2	%		1	%
3rd year since purchase		3	%		2	%		1	%	None
4th year since purchase		2	%		1	%		None		None
5th year since purchase		2	%		None			None		None
6th year since purchase		1	%		None			None		None
7th year since purchase		None			None			None		None

Class B shares automatically convert to Class A shares after the end of the sixth year if you purchase less than $100,000, after the end of the fourth year if you purchase at least $100,000 but less than $250,000, after the end of the third year if you purchase at least $250,000 but less than $500,000 and after the end of the second year if you purchase $500,000 or more but less than $1 million. To qualify for the lower deferred sales charge and shorter conversion schedule, you must make the indicated investment as a single purchase.

Regardless of the amount of the investment, Class B shares of Family Funds ("Family Funds" include other UBS Funds, UBS PACE Select funds and other funds for which UBS Global Asset Management (US) Inc. ("UBS Global AM (US)") serves as principal underwriter) purchased or acquired prior to November 5, 2001 and exchanged (including exchanges as part of a reorganization) for shares of the Funds after November 5, 2001 (collectively, "Prior Class B Shares") are subject to a deferred sales charge at the time of redemption at the following percentages: (i) 5%, if shares are sold within the first year since purchase; (ii) 4%, if shares are sold within the second year since purchase; (iii) 3%, if shares are sold within the third year since purchase; (iv) 2%, if shares are sold within the fourth or fifth year since purchase; and (v) 1%, if shares are sold within the sixth year of purchase. Prior Class B Shares held

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longer than six years are not subject to a deferred sales charge and automatically convert to Class A shares, which have lower ongoing expenses.

We will not impose the deferred sales charge on Class B shares purchased by reinvesting dividends or on withdrawals in any year of up to 12% of the value of your Class B shares under the Automatic Cash Withdrawal Plan.

To minimize your deferred sales charge, we will assume that you are selling:

• First, Class B shares representing reinvested dividends, and

• Second, Class B shares that you have owned the longest.

Class C shares

Class C shares pay an annual 12b-1 distribution fee of 0.75% of average net assets. Class C shares of each Fund also pay an annual 12b-1 service fee of 0.25% of average net assets. Class C shares do not convert to another class of shares. This means that you will pay the 12b-1 fees for as long as you own your shares.

Class C shares also have a contingent deferred sales charge of 1.00% applicable if you sell your shares within one year of the date you purchased them. We calculate the deferred sales charge on sales of Class C shares by multiplying 1.00% by the lesser of the net asset value of the Class C shares at the time of purchase or the net asset value at the time of sale.

Sales charge waivers for Class A, Class B and Class C shares

Class A front-end sales charge waivers—Front-end sales charges will be waived if you buy Class A shares with proceeds from the following sources:

1. Redemptions from any registered mutual fund for which UBS Global AM (US) or any of its affiliates serves as principal underwriter if you:

• Originally paid a front-end sales charge on the shares; and

• Reinvest the money within 60 days of the redemption date.

The Funds' front-end sales charges will also not apply to Class A purchases by or through:

1. Employees of UBS AG and its subsidiaries and members of the employees' immediate families; and members of the Board of Directors/Trustees (and former Board members who retire from such Boards after December 1, 2005) of any investment company for which UBS Global AM (US) or any of its affiliates serve as principal underwriter.

2. Trust companies and bank trust departments investing on behalf of their clients if clients pay the bank or trust company an asset-based fee for trust or asset management services.

3. Retirement plans and deferred compensation plans that have assets of at least $1 million or at least 25 eligible employees.

4. Broker-dealers and other financial institutions (including registered investment advisors and financial planners) that have entered into a selling agreement with UBS Global AM (US) (or otherwise have an arrangement with a broker-dealer or other financial institution with respect to sales of Fund shares), on behalf of clients participating in a fund supermarket, wrap program, or other program in which clients pay a fee for advisory services, executing transactions in Fund shares, or for otherwise participating in the program.

5. Employees of broker-dealers and other financial institutions (including registered investment advisors and financial planners) that have entered into a selling agreement with UBS Global AM (US) (or otherwise having an arrangement with a broker-dealer or other financial institution with respect to sales of Fund shares), and their immediate family members, as allowed by the internal policies of their employer.

6. Insurance company separate accounts.

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7. Shareholders of the Class N shares of any UBS Fund who held such shares at the time they were redesignated as Class A shares.

8. Reinvestment of capital gains distributions and dividends.

9. College savings plans organized under Section 529 of the Internal Revenue Code (the "IRC").

Class A, Class B and Class C shares contingent deferred sales charge waivers—The contingent deferred sales charge will be waived for:

• Redemptions of Class A shares by former holders of Class N shares;

• Exchanges between funds for which UBS Global AM (US) or one of its affiliates serves as principal underwriter, if purchasing the same class of shares;

• Redemptions following the death or disability of the shareholder or beneficial owner;

• Tax-free returns of excess contributions from employee benefit plans;

• Distributions from employee benefit plans, including those due to plan termination or plan transfer;

• Redemptions made in connection with the Automatic Cash Withdrawal Plan, provided that such redemptions:

—are limited annually to no more than 12% of the original account value;

—are made in equal monthly amounts, not to exceed 1% per month; and

—the minimum account value at the time the Automatic Cash Withdrawal Plan was initiated was no less than $5,000; and

• Redemptions of shares purchased through certain retirement plans.

Sales charge reductions for Class A shares

Right of accumulation. A purchaser of Class A shares may qualify for a reduction of the front-end sales charge on purchases of Class A shares by combining a current purchase with certain other Class A, Class B, Class C, Class P and/or Class Y shares of Family Funds¹ already owned. To determine if you qualify for a reduction of the front-end sales charge, the amount of your current purchase is added to the current net asset value of your other Class A, Class B, Class C, Class P and/or Class Y shares, as well as those Class A, Class B, Class C, Class P and/or Class Y shares of your spouse and children under the age of 21 and who reside in the same household. If you are the sole owner of a company, you may also add any company accounts, including retirement plan accounts invested in Class A, Class B, Class C, Class P and/or Class Y shares of the Family Funds. Companies with one or more retirement plans may add together the total plan assets invested in Class A, Class B, Class C, Class P and/or Class Y shares of the Family Funds to determine the front-end sales charge that applies. To qualify for the discount on a purchase through a financial institution, when each purchase is made, the investor or institution must provide UBS Global AM (US) with sufficient information to verify that the purchase qualifies for the privilege or discount. The right of accumulation may be amended or terminated by UBS Global AM (US) at any time as to purchases occurring thereafter.

Shares purchased through a broker/dealer may be subject to different procedures concerning Rights of Accumulation. Please contact your investment professional for more information.

Letter of intent

^1. Please note that any Family Fund that is a money market fund will not count for purposes of the right of accumulation discount or for purposes of satisfying the forms of a Letter of Intent.

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Class A shares under a Letter of Intent will be made at the public offering price applicable at the time of such purchase to a single transaction of the total dollar amount indicated in the Letter of Intent. A Letter of Intent may include purchases of Class A, Class B, Class C and/or Class Y shares made not more than three months prior to the date that the investor signs a Letter of Intent and during the 13-month period in which the Letter of Intent is in effect; however, the 13-month period during which the Letter of Intent is in effect will begin on the date on which the Letter of Intent is signed.

Investors do not receive credit for shares purchased by the reinvestment of distributions. Investors qualifying for a right of accumulation discount (described above) may purchase shares under a single Letter of Intent.

The Letter of Intent is not a binding obligation upon the investor to purchase the full amount indicated. The minimum initial investment under a Letter of Intent is 5% of such amount, which must be invested immediately. Class A shares purchased with the first 5% of such amount may be held in escrow to secure payment of the higher sales charge applicable to the shares actually purchased if the full amount indicated is not purchased. When the full amount indicated has been purchased, the escrow will be released. If an investor desires to redeem escrowed shares before the full amount has been purchased, the shares will be released only if the investor pays the sales charge that, without regard to the Letter of Intent, would apply to the total investment made to date.

Letter of Intent forms may be obtained from UBS Global AM (US) or from investment professionals. Investors should read the Letter of Intent carefully.

Shares purchased through a broker/dealer may be subject to different procedures concerning Letters of Intent. Please contact your investment professional for more information.

Note on sales charge reductions and waivers for Class A, Class B and Class C shares

Additional information concerning sales charge reductions and waivers is available in the Funds' Statement of Additional Information ("SAI"). If you think you qualify for any of the sales charge waivers or reductions described previously, you may need to notify and/or provide documentation to UBS Global AM (US). You will also need to notify UBS Global AM (US) of the existence of other accounts in which there are holdings eligible to be aggregated to meet certain sales load breakpoints. Information you may need to provide to UBS Global AM (US) may include:

• Information or records regarding shares of the Fund or other funds held in all accounts at any financial intermediary;

• Information or records regarding shares of the Fund or other funds held in any account at any financial intermediary by related parties of the shareholder, such as members of the same family; and/or

• Any information that may be necessary for UBS Global AM (US) to determine your eligibility for a reduction or waiver of a sales charge.

For more information, you should contact your investment professional or call 1-800-647 1568. If you want information on the Automatic Cash Withdrawal Plan, see the SAI or contact your investment professional. Also, information regarding the Funds' distribution arrangements and the applicable sales charge reductions and waivers is available on the Funds' Web Site, free of charge, at http://www.ubs.com/1/e/globalam/Americas/ globalamus/globalamusii/i_mutual_funds.html.

Class Y shares

Shareholders pay no front-end or deferred sales charges on Class Y shares. Prior to June 16, 2010, UBS Global AM (US), the principal underwriter of the funds, made payments out of its own resources to certain affiliated dealers (e.g., UBS Financial Services Inc.) and, from time to time, unaffiliated dealers. These dealers may continue to receive such payments after June 16, 2010, in UBS Global AM (US)'s sole discretion. Only specific types of investors can purchase Class Y shares.

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The following are eligible to purchase Class Y shares:

• Shareholders of the Class I shares of any UBS Fund who held such shares as of the date the shares were redesignated Class Y shares;

• Retirement plans with 5,000 or more eligible employees or $100 million or more in plan assets;

• Retirement plan platforms/programs that include Fund shares if the platform/program covers plan assets of at least $100 million;

• Trust companies and bank trust departments purchasing shares on behalf of their clients in a fiduciary capacity;

• Banks, registered investment advisors and other financial institutions purchasing fund shares for their clients as part of a discretionary asset allocation model portfolio;

• Shareholders who owned Class Y shares of the Fund through the PACE Multi-Advisor Program as of November 15, 2001, will be eligible to continue to purchase Class Y shares of that Fund through the program;

• College savings plans organized under Section 529 of the IRC, if shareholder servicing fees are paid exclusively outside of the participating funds;

• Other investors as approved by the Funds' Board of Trustees;

• Shareholders who invest a minimum initial amount of $5 million in a Fund. An institutional investor may aggregate its holdings with holdings of certain related institutional investors to meet the foregoing minimums;

• Foundations, Endowments and Religious and other charitable organizations described in Section 501(c)(3) of the IRC that invest a minimum initial amount of $2,500,000;

• Employees of UBS Global AM (Americas) and UBS Global AM (US), as long as the employee establishes an account in his or her name directly at the Funds' transfer agent and purchases a minimum initial amount of $50,000; and

• Members of the Board of Directors/Trustees (and former Board members who retire from such Boards after December 1, 2005) of any investment company for which UBS Global AM (US) or any of its affiliates serves as principal underwriter, subject to a minimum initial purchase amount of $50,000 in an account established by the member in his or her name directly at the Funds' transfer agent.

Class Y shares do not pay ongoing 12b-1 distribution or service fees. The ongoing expenses for Class Y shares are the lowest of all the classes.

Buying shares

You can buy Fund shares through your investment professional at a broker-dealer or other financial institution with which UBS Global AM (US) has a dealer agreement.

If you wish to invest in other Family Funds, you can do so by:

• Contacting your investment professional (if you have an account at a financial institution that has entered into a dealer agreement with UBS Global AM (US));

• Buying shares through the transfer agent as described later in this prospectus; or

• Opening an account by exchanging shares from another Family Fund.

Selected securities dealers or other financial institutions, including UBS Financial Services Inc., may charge a processing fee to confirm a purchase. UBS Financial Services Inc. currently charges a fee of $5.25.

The Funds and UBS Global AM (US) reserve the right to reject a purchase order or suspend the offering of shares.

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Through financial institutions/professionals

As mentioned above, the Funds have entered into one or more sales agreements with brokers, dealers or other financial intermediaries ("Service Providers"), as well as with financial institutions (banks and bank trust departments) (each an "Authorized Dealer"). The Authorized Dealer, or intermediaries designated by the Authorized Dealer (a "Sub-designee"), may in some cases be authorized to accept purchase and redemption orders that are in "good form" on behalf of the Funds. A Fund will be deemed to have received a purchase or redemption order when the Authorized Dealer or Sub-designee receives the order in good form. Such orders will be priced at the Fund's net asset value next computed after such order is received in good form by the Authorized Dealer or Sub-designee. These Authorized Dealers may charge the investor a transaction fee or other fee for their services at the time of purchase. These fees would not be otherwise charged if you purchased shares directly from the Funds. It is the responsibility of such Authorized Dealers or Sub-designees to promptly forward purchase orders with payments to the Funds.

Additional compensation to affiliated dealer

UBS Global AM (US) pays its affiliate, UBS Financial Services Inc., the following additional compensation in connection with the sale of Fund shares:

• 0.05% of the value (at the time of sale) of all shares of a Fund sold through UBS Financial Services Inc.; and

• a monthly retention fee at a blended annual rate that consists of 0.10% of the value of the equity portion of a Fund's portfolio and 0.075% of the value of the fixed income portion of a Fund's portfolio that are held in a UBS Financial Services Inc. account at month-end.

The foregoing payments are made by UBS Global AM (US) out of its own resources. These payments are often referred to as "revenue sharing."

Additional compensation to financial institution(s)

UBS Global AM (US) or the Advisor may pay compensation, out of the Advisor's profits and not as an additional charge to a Fund, to certain financial institutions (which may include banks, securities dealers and other industry professionals) for the sale and/or distribution of Fund shares or the retention and/or servicing of Fund investors and Fund shares. These payments are often referred to as "revenue sharing." Revenue sharing payments are paid in addition to any distribution or servicing fees payable under a 12b-1 or service plan of a Fund, any record keeping or sub-transfer agency fees payable by a Fund, or other fees described in the fee tables or elsewhere in the prospectus or SAI. Revenue sharing payments are paid from the Advisor's own resources and not as an additional charge to a Fund.

The level of revenue sharing payments made to financial institutions may be a fixed fee or based upon one or more of the following factors: gross sales, current assets and/or number of accounts of the Fund attributable to the financial institution, or other factors as agreed to by the Advisor and the financial institution or any combination thereof. The amount of the revenue share may be different for different financial institutions. For specific information about revenue sharing arrangements for a particular financial institution please see the SAI.

In some circumstances, revenue sharing payments may create an incentive for a financial institution, its employees or associated persons to recommend or sell shares of the Fund to you. You should consult with your financial advisor and review carefully any disclosure by the financial institution as to compensation received.

Minimum investments:

Class A, Class B and Class C shares:

To open an account				$	1,000
To add to an account				$	100

The Funds may waive or reduce these amounts for:

• Employees of UBS Global AM (US) or its affiliates; or

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The UBS Funds

• Participants in certain pension plans, retirement accounts, unaffiliated investment programs or the Funds' automatic investment plan.

Market timers. The interests of the Funds' long-term shareholders and their ability to manage their investments may be adversely affected when their shares are repeatedly bought and sold in response to short-term market fluctuations—also known as "market timing." Market timing may cause a Fund to have difficulty implementing long-term investment strategies, because it cannot predict how much cash it will have to invest. Market timing also may force a Fund to sell portfolio securities at disadvantageous times to raise the cash needed to buy a market timer's Fund shares. Market timing also may materially increase a Fund's transaction costs, administrative costs or taxes. These factors may hurt a Fund's performance and its shareholders.

In addition, the nature of a Fund's portfolio holdings may allow a shareholder to engage in a short-term trading strategy to take advantage of possible delays between the change in the Fund's portfolio holdings and the reflection of that change in the Fund's net asset value (often called "arbitrage market timing"). Such a delay may occur if a Fund has significant investments in non-US securities, where due to time zone differences, the value of those securities is established some time before the Fund calculates its net asset value. In such circumstances, the available market prices for such non-US securities may not accurately reflect the latest indications of value at the time the Fund calculates its net asset value. There is a possibility that arbitrage market timing may dilute the value of Fund shares if redeeming shareholders receive proceeds (and buying shareholders receive shares) based upon a net asset value that does not reflect appropriate fair value prices. One of the objectives of the Funds' fair value pricing procedures is to minimize the possibilities of this type of arbitrage market timing.

The Board of Trustees of the Trust has adopted the following policies as a means to discourage, detect and prevent market timing. A Fund will reject purchase orders and exchanges into the Fund by any person, group or account that UBS Global AM (Americas), as the Funds' Advisor and Administrator, determines to be a market timer. UBS Global AM (Americas) maintains market timing prevention procedures under which it reviews daily reports from the Funds' transfer agent of all accounts that engaged in transactions in Fund shares that exceed a specified monetary threshold and effected such transactions within a certain period of time to evaluate whether any such account had engaged in market timing activity. In evaluating the account transactions, UBS Global AM (Americas) will consider the potential harm of the trading or exchange activity to a Fund or its shareholders. If UBS Global AM (Americas) determines, in its sole discretion, that a shareholder has engaged in market timing, the shareholder will be permanently barred from making future purchases or exchanges into the Funds. Additionally, in making a determination as to whether a shareholder has engaged in market timing, the shareholder's account may be temporarily barred from making additional investments into a Fund pending a definitive determination. In addition, if a Financial Advisor is identified as the Financial Advisor of two or more accounts that have engaged in market timing, UBS Global AM (Americas) may prohibit the Financial Advisor from making additional purchases of the Fund on behalf of its clients.

Shares of the Funds may be held through omnibus account arrangements, whereby a broker-dealer, investment advisor, retirement plan sponsor or other financial intermediary (each a "Financial Intermediary") maintains an omnibus account with the Funds for trading on behalf of its customers or participants. Omnibus accounts are accounts that aggregate the transactions of underlying shareholders, thus making it difficult to identify individual underlying account holder activity. UBS Global AM (Americas) reviews purchase and redemption activity in omnibus accounts on a daily basis to seek to identify an unusual pattern of trading activity within a short period of time. If UBS Global AM (Americas) detects an unusual pattern of trading activity, UBS Global AM (Americas) will notify the Financial Intermediary of the omnibus account and will request that the Financial Intermediary provide underlying account detail. If UBS Global AM (Americas) identifies market timing activity, it will instruct the Financial Intermediary to

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block the customer or participant from further purchases of Fund shares. In the event that the Financial Intermediary cannot identify and block the customer or participant, UBS Global AM (Americas) will require the Financial Intermediary to block the particular plan from further purchases of Fund shares. UBS Global AM (Americas) also will periodically request underlying account detail for omnibus accounts for review and analysis.

While the Funds will seek to take actions (directly and with the assistance of Financial Intermediaries) that will detect market timing, the Funds' efforts may not be completely successful in minimizing or eliminating such trading activity.

When it is determined that a Financial Intermediary's frequent trading policies and procedures sufficiently protect Fund shareholders, the Funds and UBS Global AM (Americas) may rely on the Financial Intermediary's frequent trading policies and procedures with respect to transactions by shareholders investing through the Financial Intermediary rather than applying the Funds' market timing prevention procedures. The determination to rely on a Financial Intermediary's frequent trading policies and procedures will be made after a review of the policies and procedures by the Legal and Compliance Departments of UBS Global AM (Americas). The Chief Compliance Officer of UBS Global AM (Americas) will determine whether the policies and procedures sufficiently protect Fund shareholders. The types of Financial Intermediaries that may have frequent trading policies and procedures on which the Funds and UBS Global AM (Americas) may rely may include broker-dealers, advisors, clearing firms, bank trust departments, retirement plan administrators, other record keepers and certain wrap fee program/platforms. In such cases, a Financial Intermediary through which a shareholder may own Fund shares may impose frequent trading restrictions that differ from those of the Funds. If you have purchased shares through a Financial Intermediary as described above, you should contact your Financial Intermediary to determine the frequent trading restrictions that apply to your account.

Certain types of transactions will also be exempt from the market timing prevention procedures. These exempt transactions are purchases and redemptions through the Automatic Cash Withdrawal Plan, purchases through an automatic investment plan, redemptions by wrap fee accounts that have an automatic rebalancing feature and that have been identified to the Funds' principal underwriter and transfer agent, certain non-participant directed transactions in retirement plans, and purchases and redemptions by UBS funds of funds.

Selling shares

You can sell your Fund shares at any time. If you own more than one class of shares, you should specify which class you want to sell. If you do not, a Fund will assume that you want to sell shares in the following order: Class A, then Class C, then Class B and last, Class Y.

If you want to sell shares that you purchased recently, a Fund may delay payment until it verifies that it has received good payment. If you hold your shares through a financial institution, you can sell shares by contacting your investment professional, or an Authorized Dealer or Sub-designee, for more information. Important note: Each institution or professional may have its own procedures and requirements for selling shares and may charge fees. If you purchased shares through the Funds' transfer agent, you may sell them as explained later in this prospectus.

If you sell Class A shares and then repurchase Class A shares of the same Fund within 365 days of the sale, you can reinstate your account without paying a sales charge.

Securities dealers or other financial institutions, including UBS Financial Services Inc., may charge a fee to process a redemption of shares. UBS Financial Services Inc. currently charges a fee of $5.25.

The Funds reserve the right to pay redemptions "in kind" (i.e., payment in securities rather than cash) if the investment you are redeeming is large enough to affect a Fund's operations (for example, if it represents more than $250,000 or 1% of the Fund's assets). In these cases, you might incur brokerage costs converting the securities to cash.

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It costs the Funds money to maintain shareholder accounts. Therefore, the Funds reserve the right to repurchase all shares in any account that has a net asset value of less than $500. Any applicable deferred sales charge may be assessed on such redemptions. If a Fund elects to do this with your account, it will notify you that you can increase the amount invested to $500 or more within 60 days. A Fund will not repurchase shares in accounts that fall below $500 solely because of a decrease in the Fund's net asset value.

To help the government fight the funding of terrorism and money laundering activities, federal law requires all financial institutions to obtain, verify and record information that identifies each person who opens an account. If you do not provide the information requested, a Fund may not be able to maintain your account. If a Fund is unable to verify your identity or that of another person(s) authorized to act on your behalf, the Fund and UBS Global AM (Americas) reserve the right to close your account and/or take such other action they deem reasonable or required by law. Fund shares will be redeemed and valued in accordance with the net asset value next calculated after the determination has been made to close the account.

Redemption fee

If you sell or exchange any class of shares of a Fund less than 90 days after you purchased them, a redemption fee of 1.00% of the amount sold or exchanged will be deducted at the time of the transaction, except as noted below. This amount will be paid to the applicable Fund, not to the Advisor or UBS Global AM (US). The redemption fee is designed to offset the costs associated with fluctuations in Fund asset levels and cash flow caused by short-term shareholder trading. Shares held the longest will be redeemed first for purposes of calculating the redemption fee. The redemption fee will not apply to shares of the Funds that:

• are held in certain omnibus accounts of certain Financial Intermediaries, such as broker-dealers or qualified retirement plans including 401 (k), 403(b) or 457 plans or plans administered as college savings programs under Section 529 of the IRC, if those institutions have not implemented the system changes necessary to be capable of processing the redemption fee. However, account holders whose investments in a Fund are held in omnibus accounts through certain other Financial Intermediaries may be subject to the redemption fee on terms that are generally in accordance with the redemption fee terms as described in this prospectus but that may differ in certain details. For certain retirement plans treated as omnibus accounts by the Funds' transfer agent or principal underwriter, the redemption fee will be waived on non-participant initiated exchanges or redemptions;

• are sold or exchanged under automatic withdrawal plans;

• are held by investors in certain asset allocation programs that offer automatic rebalancing or wrap-fee or similar fee-based programs and that have been identified to the Funds' principal underwriter and transfer agent, except to the extent that transactions in those programs are shareholder initiated;

• are sold due to death or disability of the shareholder; or

• UBS Global AM (Americas), in its sole discretion, deems reasonable, in light of the circumstances.

Exchanging shares

You may exchange Class A, Class B or Class C shares of a Fund for shares of the same class of most other Family Funds. You may not exchange Class Y shares.

You will not pay either a front-end sales charge or a deferred sales charge when you exchange shares, but shareholders may be subject to a redemption fee as noted above. Also, you may have to pay a deferred sales charge if you later sell the shares you acquired in the exchange. A Fund will use the date of your original share purchase to determine whether you must pay a deferred sales charge when you sell the shares of the Fund acquired in the exchange.

Other Family Funds may have different minimum investment amounts. You may not be able to exchange your shares if the value of shares you exchange is not as large as the minimum investment amount in that other Fund.

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You may exchange shares of one Fund for shares of another Family Fund only after the first purchase has settled and the first Fund has received your payment.

If you hold your Fund shares through a financial institution, you may exchange your shares by placing an order with that institution. If you hold Fund shares through the Funds' transfer agent, you may exchange your shares as explained below.

The Funds may modify or terminate the exchange privilege at any time.

Transfer agent

If you wish to invest in these Funds or any other of the Family Funds through the Funds' transfer agent, BNY Mellon Investment Servicing (US) Inc. (formerly PNC Global Investment Servicing (U.S.) Inc.), you can obtain an application by calling 1-800-647 1568. You must complete and sign the application and mail it, along with a check to the transfer agent.

You may also sell or exchange your shares by writing to the Funds' transfer agent. Your letter must include:

• Your name and address;

• Your account number;

• The name of the Fund whose shares you are selling, and if exchanging shares, the name of the Fund whose shares you want to buy;

• The dollar amount or number of shares you want to sell and/or exchange; and

• A guarantee of each registered owner's signature. A signature guarantee may be obtained from a financial institution, broker, dealer or clearing agency that is a participant in one of the medallion programs recognized by the Securities Transfer Agents Association. These are: Securities Transfer Agents Medallion Program (STAMP), Stock Exchanges Medallion Program (SEMP) and the New York Stock Exchange Medallion Signature Program (MSP). The Funds will not accept signature guarantees that are not part of these programs.

Applications to purchase shares (along with a check), and letters requesting redemptions of shares or exchanges of shares through the transfer agent should be mailed to:

BNY Mellon Investment Servicing (US) Inc.
UBS Global Asset Management
P.O. Box 9786
Providence, RI 02940

You do not have to complete an application when you make additional investments in the same Fund.

Transfer of account limitations

If you hold your shares with UBS Financial Services, Inc. or another securities firm, please note that if you change securities firms, you may not be able to transfer your Fund shares to an account at the new securities firm. Fund shares may only be transferred to an account held with a securities dealer or financial intermediary that has entered into an agreement with the Fund's principal underwriter. If you cannot transfer your shares to another firm, you may choose to hold the shares directly in your own name with the Fund's transfer agent, BNY Mellon Investment Servicing (US) Inc. Please contact your broker or financial advisor, for information on how to transfer your shares to the Fund's transfer agent. If you transfer your shares to the Fund's transfer agent, the Fund's principal underwriter may be named as the dealer of record and you will receive ongoing account statements from BNY Mellon Investment Servicing (US) Inc.

Should you decide to sell your shares of the Fund in lieu of transfer, you will pay a redemption fee or a CDSC if those fees are applicable. Should you have any questions regarding the portability of your Fund shares, please contact your broker or financial advisor.

Pricing and valuation

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(generally, 4:00 p.m., Eastern time). The NYSE normally is not open, and a Fund does not price its shares, on most national holidays and on Good Friday. If trading on the NYSE is halted for the day before 4:00 p.m., Eastern time, a Fund's net asset value per share will be calculated as of the time trading was halted.

Your price for buying, selling or exchanging shares of a Fund will be based on the net asset value (adjusted for any applicable sales charges and redemption fees) that is next calculated after the Fund (or an Authorized Dealer or Sub-designee) receives your order in good form. If you place your order through a financial institution, your investment professional is responsible for making sure that your order is promptly sent to the Fund.

Each Fund calculates its net asset value based on the current market value for its portfolio securities. The Funds normally obtain market values for their securities and other investments from independent pricing sources. Independent pricing sources may use last reported sale prices, official market closing price, current market quotations or valuations from computerized "matrix" systems that derive values based on comparable securities or investments. A matrix system incorporates parameters such as security quality, maturity and coupon, and/or research and evaluations by its staff, including review of broker-dealer market price quotations, if available, in determining the valuation of the portfolio securities or investments. If a market value is not readily available from an independent pricing source for a particular security or investment, that security or investment is valued at a fair value determined by or under the direction of the Trust's Board of Trustees. Short-term obligations with maturities of 60 days or less are valued at amortized cost, which approximates market value.

Securities and investments traded in the over-the-counter ("OTC") market and listed on The NASDAQ Stock Market, Inc. ("NASDAQ") normally are valued at the NASDAQ Official Closing Price. Other OTC securities are valued at the last bid price available prior to valuation. Securities and other investments which are listed on US and foreign stock exchanges normally 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.

The Trust's Board of Trustees has delegated to the UBS Global AM (Americas)' Global Valuation Committee the responsibility for making fair value determinations with respect to the Funds' portfolio holdings. The types of securities and other investments for which such fair value pricing may be necessary include, but are not limited to: foreign securities and investments under some circumstances, as discussed below; securities of an issuer that has entered into a restructuring; securities or investments whose trading has been halted or suspended; fixed-income securities that are in default and for which there is no current market value quotation; and securities or investments that are restricted as to transfer or resale. The need to fair value the Funds' portfolio securities and other investments may also result from low trading volume in foreign markets or thinly traded domestic securities or investments, and when a security subject to a trading limit or collar on the exchange or market on which it is primarily traded reaches the "limit up" or "limit down" price and no trading has taken place at that price. Various factors may be reviewed in order to make a good faith determination of a security's or investment's fair value. These factors include, but are not limited to, fundamental analytical data relating to the investment; the nature and duration of restrictions on disposition of the securities or investments; and the evaluation of forces which influence the market in which the securities or investments are purchased and sold.

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The UBS Funds

from recognized dealers in those holdings. If a Fund concludes that a market quotation is not readily available for a portfolio security or investment for any number of reasons, including the occurrence of a "significant event" (e.g., natural disaster or governmental action), after the close of trading in its principal domestic or foreign market but before the close of regular trading on the NYSE, the Fund will use fair value methods to reflect those events. This policy is intended to assure that each Fund's net asset value fairly reflects the value of its portfolio holdings as of the time of pricing. Certain Funds may use a systematic fair valuation model provided by an independent third party to value securities principally traded in foreign markets in order to adjust for possible stale pricing that may occur between the close of the foreign exchanges and the time for valuation. If a security is valued at a "fair value," that value is likely to be different from the last quoted market price for the security. In cases where securities are traded on more than one exchange, the securities are valued on the exchange designated as the primary market by UBS Global AM (Americas), the investment advisor of the Funds.

Valuing securities and other investments at fair value involves greater reliance on judgment than valuing securities and other investments that have readily available market quotations. Fair value determinations can also involve reliance on quantitative models employed by a fair value pricing service. There can be no assurance that a Fund could obtain the fair value assigned to a security or investment if it were to sell the security or investment at approximately the time at which the Fund determines its net asset value per share. As a result, a Fund's sale or redemption of its shares at net asset value, at a time when a holding or holdings are valued at fair value, may have the effect of diluting or increasing the economic interest of existing shareholders.

Certain Funds may invest in securities or investments that trade primarily in foreign markets that trade on weekends or other days on which the Funds do not calculate their net asset value. As a result, the Fund's net asset value may change on days when you will not be able to buy and sell your Fund shares. Certain securities in which the Funds invest are traded in markets that close before 4:00 p.m. Eastern Time. Normally, developments that occur between the close of the foreign markets and 4:00 p.m. Eastern Time will not be reflected in the Fund's net asset value. However, if any of the Funds determine that such developments are so significant that they will materially affect the value of the Fund's securities, the Fund may adjust the previous closing prices to reflect what the Board believes to be the fair value of these securities as of 4:00 p.m. Eastern Time.

Futures contracts are generally valued at the settlement price established each day on the exchange on which they are traded. Forward foreign currency contracts are valued daily using forward exchange rates quoted by independent pricing services. Swaps are marked to market daily based upon values from third party vendors or quotations from market makers to the extent available and the change in value, if any, is recorded as an unrealized gain or loss on the Fund's Statement of Assets and Liabilities. In the event that market quotations are not readily available or deemed unreliable, the swap is valued at fair value as determined in good faith by or under the direction of the Board.

A Fund's portfolio holdings may also consist of shares of other investment companies in which the Fund invests. The value of each such investment company will be its net asset value at the time the Fund's shares are priced. Each investment company calculates its net asset value based on the current market value for its portfolio holdings. Each investment company values securities and other investments in a manner as described in that investment company's prospectus.

Management

Investment advisor

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The UBS Funds

investment of assets of each Fund. As of June 30, 2010, the Advisor had approximately $142 billion in assets under management. The Advisor is an indirect, wholly owned subsidiary of UBS AG ("UBS") and a member of the UBS Global Asset Management Division, which had approximately $528 billion in assets under management as of June 30, 2010. UBS is an internationally diversified organization headquartered in Zurich and Basel, Switzerland, with operations in many areas of the financial services industry.

A discussion regarding the basis for the Board of Trustees' approval of the investment advisory agreement between the Trust and the Advisor on behalf of each Fund is available in the Funds' most-recent annual report to shareholders for the period ended June 30.

Portfolio management

The Advisor's investment professionals are organized into investment management teams, with a particular team dedicated to a specific asset class. Information is provided below for the portfolio managers of the Funds that are primarily responsible for coordinating the day-to-day management of the Funds.

Curt Custard, Andreas Koester and Jonathan Davies are the lead portfolio managers for the UBS Dynamic Alpha Fund, UBS Global Allocation Fund and the UBS Global Frontier Fund. Phillip Torres is also a lead portfolio manager for the UBS Dynamic Alpha Fund. Messrs. Custard, Koester, Davies and Torres have access to certain members of the fixed-income and equities investment management teams, each of whom is allocated a specified portion of the portfolio over which he or she has independent responsibility for research, security selection, and portfolio construction. The team members also have access to additional portfolio managers and analysts within the various asset classes and markets in which the Funds invest. Mr. Custard and Mr. Koester, as senior portfolio managers for the Funds, have responsibility for allocating each portfolio among the various managers and analysts, occasionally implementing trades on behalf of analysts on the team, reviewing the overall composition of each portfolio to ensure its compliance with its stated investment objectives and strategies and, with respect to the UBS Global Frontier Fund, determining the amount of leverage to use in the portfolio. Mr. Davies, as senior portfolio manager for the Funds, has responsibility for setting the currency strategies and making all currency decisions for the Funds, occasionally implementing trades on behalf of analysts on the team and reviewing the overall composition of each portfolio to ensure its compliance with its stated investment objectives and strategies. Mr. Torres, as senior portfolio manager for the Fund, has responsibility for contributing to the equity and bond market positioning of the Fund, generation and analysis of new trade ideas, and portfolio construction. Information about Messrs. Custard, Koester, Davies and Torres is provided below.

Curt Custard is a Group Managing Director and has been Head of Global Investment Solutions at UBS Global Asset Management since March 2008. Mr. Custard is also a member of the UBS Global Asset Management Executive Committee. Prior to joining UBS Global Asset Management, Mr. Custard was Global Head of Multi-Asset Solutions at Schroders since 2004. Prior to this, Mr. Custard was Chief Investment Officer of the Multi-Asset and Balanced Business of Allianz Global Investors in London since 2000. Mr. Custard has been a portfolio manager of the UBS Dynamic Alpha Fund since 2008 and the UBS Global Allocation Fund and UBS Global Frontier Fund since April 2009.

Andreas Koester is a Managing Director and is Head of Asset Allocation & Currency in the Global Investment Solutions team. Mr. Koester has been at UBS Global Asset Management since March 2009. Prior to joining UBS Global Asset Management, Mr. Koester worked at Schroders since 2005, where he was Head of US & European Multi-Asset Solutions and was also a member of their global asset allocation and alternative investment committees. Prior to joining Schroders, Mr. Koester worked for AXA Investment Managers since 2001 in various portfolio management and asset allocation roles. Mr. Koester has been a portfolio manager of the Funds since 2009.

Jonathan Davies is an Executive Director and is a member of the Global Investment Solutions team, based in London. Mr. Davies has been at UBS Global Asset Management since March 2002. Prior to joining UBS Global Asset Management, Mr. Davies held positions at the Institute for Fiscal Studies and the Financial Services Authority. Mr. Davies has been a portfolio manager of the Funds since 2009.

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The UBS Funds

Phillip Torres is Executive Director and is Head of Absolute Return Oriented Strategies in the Asset Allocation & Currency team with the Global Investment Solutions team. Mr. Torres has been at UBS Global Asset Management since 2010. Prior to joining UBS Global Asset Management, Mr. Torres was a portfolio manager at ForSix Asset Management (2009-2010) and Vara Capital Management (2005-2009). Mr. Torres has been a portfolio manager of the UBS Dynamic Alpha Fund since July 1, 2010.

The Funds' SAI provides information about the Funds' portfolio managers' compensation, other accounts managed by the portfolio managers and the portfolio managers' ownership of Fund shares.

Advisory fees

The effective investment advisory fees (expressed as a monthly fee at an annual rate multiplied by the average daily net assets of the Fund) payable to the Advisor, before fee waivers and/or expense reimbursements, if applicable, by each Fund, are presented in the following tables as of the one month ended June 30, 2010. For purposes of calculating such fee for UBS Global Frontier Fund, the Fund's average daily net assets will be deemed to be the average daily value of the Fund's total assets minus the sum of the Fund's liabilities (which liabilities exclude the aggregate amount of any borrowing). During the fiscal year ended June 30, 2010 the Funds paid the Advisor investment advisory fees as set forth in each respective Fund's expenses and fee table in the line item "Management fees."

The Advisor has contractually agreed to waive its fees and/or reimburse certain expenses so that the ordinary operating expenses of the Funds (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses with respect to all of the Funds and excluding securities loan fees and dividend expenses for securities sold short with respect to the UBS Dynamic Alpha Fund and UBS Global Frontier Fund) do not exceed the amounts listed in the footnotes to the Expense Tables. The contractual fee waiver and/or expense reimbursement agreement will remain in place for the period ending October 27, 2011. Thereafter, the expense limit for each Fund will be reviewed each year, at which time the continuation of the expense limit will be discussed by the Advisor and the Board of Trustees. The contractual fee waiver agreement also provides that the Advisor is entitled to reimbursement of fees it waived and/or expenses it reimbursed for a period of three years following such fee waivers and expense reimbursements, provided that the reimbursement by a Fund of the Advisor will not cause the total operating expense ratio to exceed the contractual limit as then may be in effect for that Fund.

[TO BE UPDATED IN THE 485(B) FILING]
	Effective advisory fee as of June 30,			Advisory fee breakpoint schedule
Fund	2010			Assets under management	Fee
UBS Dynamic Alpha Fund		0.84	%	$0 - $500 million		0.850	%
				On the next $500 million – $1 billion		0.800	%
				On the next $1 billion – $1.5 billion		0.750	%
				On the next $1.5 billion – $2 billion		0.725	%
				On the next $2 billion – $4 billion		0.700	%
				Above $4 billion		0.680	%

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	Effective advisory fee as of June 30,			Advisory fee breakpoint schedule
Fund	2010			Assets under management	Fee
UBS Global Allocation Fund		0.74	%	$0 - $500 million		0.800	%
				On the next $500 million – $1 billion		0.750	%
				On the next $1 billion – $1.5 billion		0.700	%
				On the next $1.5 billion – $2 billion		0.675	%
				On the next $2 billion – $3 billion		0.650	%
				On the next $3 billion – $6 billion		0.630	%
				Above $6 billion		0.610	%
UBS Global Frontier Fund		0.95	%	N/A		0.95	%

Administrator

UBS Global AM (Americas) is also the administrator of the Funds. Each Fund pays UBS Global AM (Americas) an annual contract rate of 0.075% of its average daily net assets for administrative services.

Disclosure of portfolio holdings

Each Fund will file its complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. The Funds' Forms N-Q are available on the SEC's Web Site at www.sec.gov. The Funds' Forms N-Q may be reviewed and copied at the SEC's Public Reference Room in Washington, D.C. Information on the operation of the SEC's Public Reference Room may be obtained by calling 202-551 8090. Additionally, you may obtain copies of Forms N-Q from the Funds upon request by calling 1-800-647 1568. Each Fund's complete schedule of portfolio holdings for the second and fourth quarters of each fiscal year is filed with the SEC on Form N-CSR and appears in the semiannual and annual reports, respectively, sent to shareholders. The semiannual and annual reports for each Fund will be posted on the Funds' Web Site at http://www.ubs.com/globalam. Please consult the Funds' SAI for a description of the policies and procedures that govern disclosure of the Funds' portfolio holdings.

Dividends and taxes

[TO BE UPDATED IN RULE 485(B) FILING:]

Dividends and distributions

Income dividends are normally declared, and paid, by each Fund annually. Net realized capital gains, if any, are declared and distributed at least annually usually in December. A Fund may distribute such income dividends and capital gains more frequently, if necessary, in order to reduce or eliminate federal excise or income taxes on the Fund. The amount of any distributions will vary, and there is no guarantee that a Fund will pay either income dividends or capital gains distributions.

Classes with higher expenses are expected to have lower income dividends. For example, Class B and Class C shares are expected to have the lowest dividends of a Fund's shares, while Class Y shares are expected to have the highest.

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The UBS Funds

of electing to receive dividends in cash. Distribution options may be changed at any time by requesting a change in writing. Dividends and distributions are reinvested on the reinvestment date at the net asset value determined at the close of business on that date.

If you are a taxable investor and invest in a Fund shortly before the record date of a taxable distribution, the distribution will lower the value of the Fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is known as "buying a dividend."

Taxes

Each Fund intends to qualify each year as a regulated investment company under the IRC. As a regulated investment company, each Fund generally pays no federal income tax on the income and gains it distributes to you. In general, if you are a taxable investor, Fund distributions are taxable to you at either ordinary income or capital gains tax rates. This is true whether you reinvest your distributions in additional Fund shares or receive them in cash. Every year in accordance with IRS guidelines, you will receive a statement that shows the tax status of distributions you received for the previous calendar year. Distributions declared in December to shareholders of record in such month, but paid in January, are taxable as if they were paid in December.

The Funds may reclassify income after your tax reporting statement is mailed to you. Prior to issuing your statement, each Fund makes every effort to search for reclassified income to reduce the number of corrected forms mailed to shareholders. However, when necessary, a Fund will send you a corrected Form 1099-DIV to reflect reclassified information.

For federal income tax purposes, Fund distributions of short-term capital gains are taxable to you as ordinary income. Fund distributions of long-term capital gains are taxable to you as long-term capital gains no matter how long you have owned your shares. With respect to taxable years of a Fund beginning before January 1, 2011, unless such provision is extended or made permanent, a portion of income dividends designated by certain Funds may be qualified dividend income eligible for taxation by individual shareholders at long-term capital gains rates, provided certain holding period requirements are met.

If you are a taxable investor, when you sell or redeem your shares in a Fund, you may realize a capital gain or loss. For tax purposes, an exchange of your Fund shares for shares of a different Family Fund is the same as a sale. Any loss incurred on the sale or exchange of Fund shares held for six months or less will be treated as a long-term capital loss to the extent of capital gain distributions received with respect to such shares.

By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the IRS instructs it to do so. When withholding is required, the amount will be 28% of any distributions or proceeds paid.

Fund distributions and gains from the sale of your Fund shares generally are subject to state and local taxes. If a Fund qualifies to pass through to you the tax benefits from foreign taxes it pays on its investments and elects to do so, any foreign taxes a Fund pays on its investments may be passed through to you as a foreign tax credit.

Taxable ordinary distributions to non-US investors may be subject to US withholding tax at a 30% or lower treaty rate. An exemption from US withholding is provided for capital gain dividends paid by a Fund from long-term capital gains. Additionally, with respect to taxable years of a Fund that begin before January 1, 2010 (sunset date), exemptions from US withholding tax are also provided for interest-related dividends paid by a Fund from its qualified net interest income from US sources and short-term capital gain dividends. However, distributions from the Funds to non-US investors from qualified net interest income from US sources and short-term capital gains are expected to be subject to US withholding tax because certain detailed information necessary for an exemption that might otherwise apply is not maintained by the Fund or expected to be available.

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Non-US investors are subject to back-up withholding at a rate of 28% on distributions and redemption proceeds paid to a shareholder who fails to certify that they are not a US person. Non-US investors also may be subject to US estate tax and are subject to special US tax certification requirements.

This discussion of "Dividends and Taxes" is not intended or written to be used as tax advice. Because everyone's tax situation is unique, you should consult your tax advisor about the federal, state, local or foreign tax consequences of your investment in a Fund.

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Supplemental investment advisor performance information

Because the Advisor has managed other advisory accounts and, with respect to the UBS Global Frontier Fund, an offshore private investment pool, for many years in a substantially similar manner to the way in which the Advisor manages certain Funds, the following supplemental performance information is being provided to assist prospective investors in making an informed investment decision. The tables on the following pages provide performance information for composites of all applicable advisory accounts and, with respect to the UBS Global Frontier Fund, an offshore private investment pool, ("Account Composite Performance") managed by the Advisor with substantially similar investment objectives, policies and investment strategies as the applicable Funds. The Account Composite Performance was obtained from the records maintained by the Advisor, and is adjusted to reflect each applicable Fund's Class A current net expenses, which include the effect of fee waivers and/or expense reimbursements, as applicable. The following presentation also shows the Account Composite Performance adjusted to reflect each applicable Fund's Class A current net expenses, which include the effect of fee waivers and/or expense reimbursements, as applicable, and also reflects the Class A front-end sales charge of 5.50%. The performance of one or more appropriate unmanaged benchmark indexes, not adjusted for any fees or expenses, is also provided for each composite. With respect to the UBS Global Frontier Fund, the Advisor does not currently, nor has it in the past, managed any other accounts other than the offshore private investment pool included in its Account Composite Performance, that have substantially similar investment objectives, policies and investment strategies as the Fund.

Please note that the Account Composite Performance is not the Funds' own historical performance. The Account Composite Performance should not be considered a substitute for the Funds' performance, and the Account Composite Performance is not necessarily an indication of the Funds' future performance. The accounts and, with respect to the UBS Global Frontier Fund, an offshore private investment pool, included in the Account Composite Performance were not necessarily subject to certain investment limitations, diversification requirements and other restrictions imposed on mutual funds by the Investment Company Act of 1940 and the IRC, which, if applicable, may have adversely affected the performance of these accounts and, with respect to the UBS Global Frontier Fund, an offshore private investment pool.

The Account Composite Performance may be calculated differently than the method used for calculating Fund performance pursuant to SEC guidelines. Composites consisting of more than one portfolio are asset weighted by beginning-of-period asset values. Investment results are time-weighted performance calculations representing total return. Returns are calculated using geometric linking of monthly returns. Composites are valued at least monthly, taking into account cash flows. All realized and unrealized capital gains and losses, as well as all dividends and interest from investments and cash balances, are included. Interest income from fixed income securities is accrued, and equity dividends are accrued as of the ex-dividend date. Investment transactions are accounted for on a trade date basis. Results include all actual fee-paying, discretionary client portfolios including those clients no longer with the Advisor. Portfolios are included in the composite beginning with the first full month of performance to the present or to the cessation of the client's relationship with the Advisor. Terminated accounts are included through the last full month in which they were fully invested, and no alterations of composites have occurred due to changes in personnel.

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Supplemental performance information for the advisor of UBS Dynamic Alpha Fund

Composite performance: Dynamic Alpha Composite ("DAC")
December 1, 2003 through December 31, 2009

Composite performance: Dynamic Alpha Composite ("DAC")
For periods ended December 31, 2009

Year	DAC: net return after expenses and sales charge (%)⁽¹⁾			DAC: net return after expenses (%)⁽²⁾			DAC: gross return before expenses and sales charge (%)			BofA Merrill US Treasury 1-5 Year Index (%)⁽³⁾			MSCI World Free Index (net) (%)⁽⁴⁾			US Consumer Price Index (CPI) (%)⁽⁵⁾
1 year		16.79	%		23.58	%		25.20	%		0.23	%		29.99	%		2.72	%
5 years		0.45	%		1.59	%		2.85	%		4.41	%		2.01	%		2.56	%
Since inception		2.36	%		3.32	%		4.61	%		3.95	%		5.01	%		2.62	%

(1) Adjusted to reflect Class A shares' current net expenses and the maximum front-end sales charge. For periods prior to Class A shares' inception, the earliest expense ratio was used to calculate the net returns.

(2) Adjusted to reflect Class A shares' current net expenses but not adjusted to reflect the maximum front-end sales charge. For periods prior to Class A shares' inception, the earliest expense ratio was used to calculate the net returns.

(3) The BofA Merrill Lynch US Treasury 1-5 Year Index is an unmanaged index designed to track US Treasury securities with maturities between 1 and 5 years. Investors should note that indices do not reflect the deduction of fees, expenses or taxes.

(4) The MSCI World Free Index (net) is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets. As of May 2010, the index consisted of 24 developed market country indices. Dividends are reinvested after deduction of withholding tax, using tax rates applicable to Luxembourg holding companies, as Luxembourg applies the highest rates. Had US tax rates been applied, the performance of the index would be different. The index is constructed and managed with a view to being fully investable from the perspective of international institutional investors. Investors should note that indices do not reflect the deduction of fees and expenses.

(5) The US Consumer Price Index (CPI) produces monthly data on changes in the prices paid by urban consumers for a representative basket of goods and services. The Index is calculated by the Bureau of Labor Statistics. Investors should note that indices do not reflect the deduction of fees, expenses or taxes.

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Supplemental performance information for the advisor of UBS Dynamic Alpha Fund

Composite performance: Dynamic Alpha Composite ("DAC")
December 1, 2003 through December 31, 2009

Year			DAC: net return after expenses and sales charge (%)⁽¹⁾			DAC: net return after expenses (%)⁽²⁾			DAC: gross return before expenses and sales charge (%)			BofA Merrill US Treasury 1-5 Year Index (%)⁽³⁾			MSCI World Free Index (net) (%)⁽⁴⁾			US Consumer Price Index (CPI) (%)⁽⁵⁾
	2003	⁽⁶⁾		(3.29	)%		2.90	%		3.01	%		0.70	%		6.27	%		(0.11	)%
	2004			3.52	%		9.54	%		10.98	%		1.32	%		14.72	%		3.26	%
	2005			2.26	%		8.20	%		9.56	%		1.39	%		9.49	%		3.42	%
	2006			1.33	%		7.22	%		8.48	%		3.81	%		20.07	%		2.54	%
	2007			(9.08	)%		(3.79	)%		(2.64	)%		8.16	%		9.04	%		4.08	%
	2008			(25.87	)%		(21.56	)%		(20.57	)%		8.73	%		(40.71	)%		0.09	%
	2009			16.79	%		23.58	%		25.20	%		0.23	%		29.99	%		2.72	%

(6) Performance is presented for December 1, 2003 through December 31, 2003.

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Supplemental performance information for the advisor of UBS Global Allocation Fund

Composite performance: Global Securities Composite ("GSC")⁽⁷⁾
January 1, 1985 through December 31, 2009

Composite performance: Global Securities Composite ("GSC")⁽⁷⁾
For periods ended December 31, 2009

Year	GSC: net return after expenses and sales charge (%)⁽¹⁾			GSC: net return after expenses (%)⁽²⁾			GSC: gross return before expenses and sales charge (%)			Russell 3000 Index (%)⁽³⁾			MSCI World Free Index (net) (%)⁽⁴⁾			Citigroup WGBI (%)⁽⁵⁾			GSMI Mutual Fund Index (%)⁽⁶⁾
1 year		26.19	%		33.54	%		35.12	%		28.34	%		29.99	%		2.55	%		24.98	%
5 years		0.54	%		1.68	%		2.85	%		0.77	%		2.01	%		4.51	%		4.01	%
10 years		4.47	%		5.06	%		6.36	%		(0.20	)%		(0.24	)%		6.63	%		3.28	%
Since inception		9.01	%		9.26	%		10.67	%		10.44	%		9.46	%		9.13	%		10.10	%

(3) The Russell 3000 Index is designed to measure the performance of the largest 3000 US companies representing approximately 98% of the investable US equity market. The Russell 3000 Index is constructed to provide a comprehensive, unbiased, and stable barometer of the broad market and is completely reconstituted annually to ensure new and growing equities are reflected. Investors should note that indices do not reflect the deduction of fees, expenses or taxes.

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(5) The Citigroup World Government Bond Index is an unmanaged broad-based, market capitalization-weighted index composed of straight (i.e., not floating rate or index-linked) government bonds with a one-year minimum maturity. The index is designed to track the government bond markets of 22 developed countries. Investors should note that indices do not reflect the deduction of fees, expenses or taxes.

(6) The GSMI Mutual Fund Index is an unmanaged index compiled by the Advisor, constructed as follows: 65% MSCI All Country World Index, 15% Citigroup World Government Bond ex US Index, 15% Citigroup US Government Bond Index, 2% J.P. Morgan Emerging Markets Bond Index Global (EMBI Global) and 3% BofA Merrill Lynch US High Yield Cash Pay Constrained Index. On December 1, 2003, the 40% Russell 3000 Index replaced the 40% Wilshire 5000 Index, and on June 1, 2005, the 3% BofA Merrill Lynch US High Yield Cash Pay Constrained Index replaced the 3% BofA Merrill Lynch US High Yield Cash Pay Index. On April 30, 2009, the 65% MSCI All Country World Index replaced the 40% Russell 3000 Index, 22% MSCI World ex USA Index and 3% MSCI Emerging Markets Index (net); the 15% Citigroup World Government Bond ex US Index and 15% Citigroup US Government Bond Index replaced the 9% Citigroup World Government Bond ex US Index and the 21% Citigroup Broad Investment Grade Index. Investors should note that indices do not reflect the deduction of fees and expenses.

(7) Although the Advisor has managed this asset class since 1982, performance information for the period prior to December 31, 1984 is not shown because such information relates only to sub-sectors or carveouts of other accounts managed by the Advisor.

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Supplemental performance information for the advisor of UBS Global Allocation Fund

Composite performance: Global Securities Composite ("GSC")⁽⁷⁾
January 1, 1985 through December 31, 2009

Year		GSC: net return after expenses and sales charge (%)⁽¹⁾			GSC: net return after expenses (%)⁽²⁾			GSC: gross return before expenses and sales charge (%)			Russell 3000 Index (%)⁽³⁾			MSCI World Free Index (net) (%)⁽⁴⁾			Citigroup WGBI (%)⁽⁵⁾			GSMI Mutual Fund Index (%)⁽⁶⁾
	1985		17.60	%		24.45	%		26.10	%		32.16	%		40.56	%		32.29	%		32.91	%
	1986		11.59	%		18.09	%		19.66	%		16.71	%		41.89	%		26.47	%		24.78	%
	1987		6.37	%		12.55	%		14.06	%		1.94	%		16.16	%		18.39	%		9.92	%
	1988		8.01	%		14.30	%		15.82	%		17.82	%		23.20	%		4.37	%		15.96	%
	1989		11.16	%		17.63	%		19.20	%		29.32	%		16.59	%		4.34	%		19.36	%
	1990		(2.17	)%		3.53	%		4.92	%		(5.06	)%		(17.02	)%		11.97	%		(3.56	)%
	1991		14.78	%		21.46	%		23.07	%		33.66	%		18.40	%		15.82	%		23.97	%
	1992		1.69	%		7.61	%		9.05	%		9.68	%		(5.21	)%		5.53	%		4.47	%
	1993		4.48	%		10.56	%		12.04	%		10.87	%		22.57	%		13.28	%		14.46	%
	1994		(7.47	)%		(2.09	)%		(0.76	)%		0.18	%		5.06	%		2.33	%		1.42	%
	1995		17.54	%		24.38	%		26.03	%		36.81	%		20.75	%		19.04	%		25.41	%
	1996		7.48	%		13.73	%		15.25	%		21.81	%		13.52	%		3.63	%		12.53	%
	1997		4.28	%		10.35	%		11.83	%		31.78	%		15.62	%		0.24	%		14.30	%
	1998		2.36	%		8.32	%		9.78	%		24.14	%		24.37	%		15.29	%		16.45	%
	1999		(4.25	)%		1.32	%		2.69	%		20.90	%		24.84	%		(4.26	)%		16.85	%
	2000		(0.58	)%		5.20	%		6.62	%		(7.46	)%		(13.18	)%		1.59	%		(6.11	)%
	2001		(3.62	)%		1.99	%		3.37	%		(11.46	)%		(16.82	)%		(0.99	)%		(7.50	)%
	2002		(8.92	)%		(3.62	)%		(2.31	)%		(21.54	)%		(19.89	)%		19.49	%		(8.27	)%
	2003		21.17	%		28.22	%		29.87	%		31.06	%		33.11	%		14.91	%		26.53	%
	2004		7.44	%		13.70	%		15.09	%		11.95	%		14.72	%		10.35	%		12.60	%
	2005		0.29	%		6.12	%		7.36	%		6.13	%		9.49	%		(6.88	)%		6.58	%
	2006		7.48	%		13.74	%		15.02	%		15.72	%		20.07	%		6.12	%		14.84	%
	2007		(1.07	)%		4.69	%		5.85	%		5.14	%		9.04	%		10.95	%		8.78	%
	2008		(39.13	)%		(35.59	)%		(34.83	)%		(37.31	)%		(40.71	)%		10.89	%		(26.87	)%
	2009		26.19	%		33.54	%		35.12	%		28.34	%		29.99	%		2.55	%		24.98	%

UBS Global Asset Management
57

The UBS Funds

UBS Global Asset Management
58

The UBS Funds

Supplemental performance information for the advisor of UBS Global Frontier Fund

[TO BE UPDATED IN RULE 485(B) FILING:]

Composite performance: Global Frontier Composite ("GFC")
March 31, 1999 through December 31, 2009

Composite performance: Global Frontier Composite ("GFC")
For periods ended December 31, 2009

Year

GFC: net
return after
expenses
and sales
charge (%)⁽¹⁾

GFC: net
return after
expenses (%)⁽²⁾

GFC: gross
return before
expenses
and sales
charge (%)

MSCI
World
Free Index
(net) (%)⁽³⁾

GSMI
Mutual
Fund
Index (%)⁽⁴⁾

1 year

[____]%

5 years

[____]%

Since inception

[____]%

(3) [TO BE UPDATED IN RULE 485(B) FILING: The MSCI World Free Index (net) is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets. As of December 2009, the index consisted of [23] developed market country indices. Dividends are reinvested after deduction of withholding tax, using tax rates applicable to Luxembourg holding companies, as Luxembourg applies the highest rates. Had US tax rates been applied, the performance of the index would be different. The index excludes closed markets and those shares in otherwise free markets that are not purchasable by foreigners. Investors should note that indices do not reflect the deduction of fees and expenses.]

(4) The GSMI Mutual Fund Index is an unmanaged index compiled by the Advisor, constructed as follows: 65% MSCI All Country World Index, 15% Citigroup World Government Bond ex US Index, 15% Citigroup US Government Bond Index, 2% J.P. Morgan Emerging Markets Bond Index Global (EMBI Global), and 3% Merrill Lynch US High Yield Cash Pay Constrained Index. On December 1, 2003, the 40% Russell 3000 Index replaced the 40% Wilshire 5000 Index, and on June 1, 2005, the 3% Merrill Lynch US High Yield Cash Pay Constrained Index replaced the 3% Merrill Lynch US High Yield Cash Pay Index. On April 30, 2009, the 65% MSCI All Country World Index replaced the 40% Russell 3000 Index, 22% MSCI World ex USA Index and 3% MSCI Emerging Markets Index (net); the 15% Citigroup World Government Bond ex US Index and 15% Citigroup US Government Bond Index replaced the 9% Citigroup World Government Bond ex US Index and the 21% Citigroup Broad Investment Grade Index. Investors should note that indices do not reflect the deduction of fees and expenses.

UBS Global Asset Management
59

The UBS Funds

Supplemental performance information for the advisor of UBS Global Frontier Fund

[TO BE UPDATED IN RULE 485(B) FILING:]

Composite performance: Global Frontier Composite ("GFC")
March 31, 1999 through December 31, 2009

Year	GFC: net return after expenses and sales charge (%)⁽¹⁾			GFC: net return after expenses (%)⁽²⁾			GFC: gross return before expenses and sales charge (%)			MSCI World Free Index (net) (%)⁽³⁾			GSMI Mutual Fund Index (%)⁽⁴⁾
1999⁽⁵⁾		(3.86	)%		1.74	%		2.80	%		20.57	%		14.76	%
2000		0.61	%		6.47	%		7.95	%		(13.18	)%		(6.11	)%
2001		(3.39	)%		2.23	%		3.66	%		(16.82	)%		(7.50	)%
2002		(10.89	)%		(5.70	)%		(4.37	)%		(19.89	)%		(8.27	)%
2003		30.62	%		38.22	%		40.11	%		33.11	%		26.53	%
2004		12.00	%		18.52	%		20.16	%		14.72	%		12.60	%
2005		1.52	%		7.43	%		8.93	%		9.49	%		6.58	%
2006		9.21	%		15.56	%		17.16	%		20.07	%		14.84	%
2007		(1.12	)%		4.64	%		6.10	%		9.04	%		8.78	%
2008		(59.05	)%		(56.67	)%		(56.01	)%		(40.71	)%		(26.87	)%
2009		[____]%			[____]%			[____]%			[____]%			[____]%

(5) Performance is presented for April 1, 1999 through December 31, 1999.

UBS Global Asset Management
60

The UBS Funds

Financial highlights

[TO BE UPDATED IN RULE 485(B) FILING:]

Fiscal years ended June 30

The financial highlights tables are intended to help you understand a Fund's financial performance for the past five years (or, if shorter, the period of the Fund's operations). Certain information reflects financial results for a single Fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in each Fund (assuming reinvestment of all dividends and distributions).

The selected financial information in the following tables has been derived from the financial statements audited by the Funds' independent registered public accounting firm, Ernst & Young, LLP, whose unqualified report thereon (the "Report") appears in the Funds' Annual Report to Shareholders dated June 30, 2010 (the "Annual Report"). Additional performance and financial data and related notes are contained in the Annual Report, which is available without charge upon request. The Funds' financial statements for the fiscal year ended June 30, 2010 and the Report are incorporated by reference into the SAI.

UBS Global Asset Management
61

UBS Dynamic Alpha Fund—Financial highlights

[TO BE UPDATED IN THE 485(B) FILING]

The table below sets forth financial data for one share of beneficial interest outstanding throughout
each period presented.

	Class A
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of period	$[______]		$	9.89		$	11.42		$	11.04		$	10.22
Income (loss) from investment operations:
Net investment income (loss)⁽¹⁾	[______]			0.14			0.04			0.01			(0.09	)
Net realized and unrealized gain (loss) from investment activities	[______]			(1.84	)		(0.56	)		0.37			1.01
Net increase from payment by Advisor	[______]			0.00	⁽³⁾		—			—			0.00	⁽³⁾
Total income (loss) from investment operations	[______]			(1.70	)		(0.52	)		0.38			0.92
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			—			(0.01	)		0.00	⁽³⁾		(0.10	)
From net realized gains	[______]			(2.74	)		(1.00	)		—			—
Total dividends/distributions	[______]			(2.74	)		(1.01	)		0.00	⁽³⁾		(0.10	)
Net asset value, end of period	$[______]		$	5.45		$	9.89		$	11.42		$	11.04
Total investment return⁽²⁾		[______]%		(14.31	)%⁽⁶⁾		(4.95	)%		3.44	%		9.02	%⁽⁴⁾
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[______]		$	398,321		$	1,178,342		$	2,168,596		$	1,777,329
Ratio of expenses to average net assets	[______]%			1.54	%⁽⁷⁾		1.20	%		1.17	%		1.20	%
Ratio of net investment income (loss) to average net assets	[______]%			1.99	%		0.35	%		0.06	%		(0.80	)%
Portfolio turnover	[______]%			139	%		39	%		28	%		38	%
	Class B
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of period	$[______]		$	9.68		$	11.26		$	10.98		$	10.19
Income (loss) from investment operations:
Net investment income (loss)⁽¹⁾	[______]			0.08			(0.04	)		(0.09	)		(0.17	)
Net realized and unrealized gain (loss) from investment activities	[______]			(1.82	)		(0.54	)		0.37			1.00
Net increase from payment by Advisor	[______]			0.00	⁽³⁾		—			—			0.00	⁽³⁾
Total income (loss) from investment operations	[______]			(1.74	)		(0.58	)		0.28			0.83
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			—			—			—			(0.04	)
From net realized gains	[______]			(2.74	)		(1.00	)		—			—
Total dividends/distributions	[______]			(2.74	)		(1.00	)		—			(0.04	)
Net asset value, end of period	$[______]		$	5.20		$	9.68		$	11.26		$	10.98
Total investment return⁽²⁾		[______]%		(14.98	)%⁽⁶⁾		(5.62	)%		2.64	%		8.09	%⁽⁴⁾
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[______]		$	6,733		$	14,905		$	25,790		$	30,051
Ratio of expenses to average net assets:
Before expense reimbursement/recoupment	[______]%			2.39	%⁽⁷⁾		1.99	%		1.95	%		1.98	%
After expense reimbursement/recoupment	[______]%			2.36	%⁽⁷⁾		1.99	%		1.95	%		1.99	%⁽⁵⁾
Ratio of net investment income (loss) to average net assets	[______]%			1.23	%		(0.42	)%		(0.78	)%		(1.59	)%
Portfolio turnover	[______]%			139	%		39	%		28	%		38	%

⁽¹⁾ Calculated using the average shares method.

⁽²⁾ Total investment return is calculated assuming a $10,000 investment on the first day of each period reported, reinvestment of all dividends and distributions, if any, at net asset value on the ex-dividend dates, and a sale at net asset value on the last day of each period reported. The figures do not include any applicable sales charges; results would be lower if they were included. Total investment return for periods of less than one year has not been annualized. Returns do not reflect the deduction of taxes that a shareholder would pay on dividends/distributions or the redemption of Fund shares.

⁽³⁾ Amount represents less than $0.005 per share.

⁽⁴⁾ During the fiscal year ended June 30, 2006, the Fund's total investment return included a reimbursement by the Investment Advisor for amounts relating to a trading error that had an impact on the total return of less than 0.005%.

⁽⁵⁾ The Investment Manager recouped expenses previously reimbursed by the investment manager on behalf of the Fund, not to exceed the expense cap.

⁽⁶⁾ During the fiscal year ended June 30, 2009, the Fund's total investment return included a reimbursement by the Investment Advisor for amounts relating to a trading error that had an impact on total return of less then 0.005%

⁽⁷⁾ Ratios have been restated to reflect interest and dividend expense for securities sold short. This restatement had no impact on the Fund's previously reported net assets, net investment income, net asset value, total return or ratio of net investment income to average net assets.

UBS Global Asset Management
62

	Class C
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of period	$[______]		$	9.68		$	11.26		$	10.97		$	10.19
Income (loss) from investment operations:
Net investment income (loss)⁽¹⁾	[______]			0.08			(0.04	)		(0.08	)		(0.17	)
Net realized and unrealized gain (loss) from investment activities	[______]			(1.81	)		(0.54	)		0.37			1.00
Net increase from payment by Advisor	[______]			0.00	⁽³⁾		—			—			0.00	⁽³⁾
Total income (loss) from investment operations	[______]			(1.73	)		(0.58	)		0.29			0.83
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			—			—			—			(0.05	)
From net realized gains	[______]			(2.74	)		(1.00	)		—			—
Total dividends/distributions	[______]			(2.74	)		(1.00	)		—			(0.05	)
Net asset value, end of period	$[______]		$	5.21		$	9.68		$	11.26		$	10.97
Total investment return⁽²⁾		[______]%		(14.98	)%⁽⁶⁾		(5.62	)%		2.64	%		8.15	%⁽⁴⁾
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[______]		$	131,745		$	317,450		$	579,916		$	520,754
Ratio of expenses to average net assets	[______]%			2.32	%⁽⁷⁾		1.97	%		1.93	%		1.97	%
Ratio of net investment income (loss) to average net assets	[______]%			1.24	%		(0.41	)%		(0.72	)%		(1.57	)%
Portfolio turnover	[______]%			139	%		39	%		28	%		38	%
	Class Y
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of period	$[______]		$	9.96		$	11.48		$	11.07		$	10.23
Income (loss) from investment operations:
Net investment income (loss)⁽¹⁾	[______]			0.17			0.08			0.05			(0.06	)
Net realized and unrealized gain (loss) from investment activities	[______]			(1.85	)		(0.56	)		0.36			1.02
Net increase from payment by Advisor	[______]			0.00	⁽³⁾		—			—			0.00	⁽³⁾
Total income (loss) from investment operations	[______]			(1.68	)		(0.48	)		0.41			0.96
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			—			(0.04	)		0.00	⁽³⁾		(0.12	)
From net realized gains	[______]			(2.74	)		(1.00	)		—			—
Total dividends/distributions	[______]			(2.74	)		(1.04	)		0.00	⁽³⁾		(0.12	)
Net asset value, end of period	$[______]		$	5.54		$	9.96		$	11.48		$	11.07
Total investment return⁽²⁾		[______]%		(13.99	)%⁽⁶⁾		(4.64	)%		3.80	%		9.28	%⁽⁴⁾
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[______]		$	77,254		$	320,839		$	478,785		$	293,004
Ratio of expenses to average net assets:
Before expense reimbursement/recoupment	[______]%			1.22	%⁽⁷⁾		0.91	%		0.89	%		0.92	%
After expense reimbursement/recoupment	[______]%			1.22	%⁽⁷⁾		0.91	%		0.89	%		0.92	%
Ratio of net investment income (loss) to average net assets	[______]%			2.23	%		0.69	%		0.40	%		(0.52	)%
Portfolio turnover	[______]%			139	%		39	%		28	%		38	%

UBS Global Asset Management
63

UBS Global Allocation Fund—Financial highlights

The table below sets forth financial data for one share of beneficial interest outstanding throughout
each year presented.

	Class A
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of year	$[______]		$	12.59		$	14.81		$	13.86		$	13.33
Income (loss) from investment operations:
Net investment income⁽¹⁾	[______]			0.08			0.17			0.19			0.19
Net realized and unrealized gain (loss) from investment activities	[______]			(3.08	)		(1.34	)		1.83			1.08
Total income (loss) from investment operations	[______]			(3.00	)		(1.17	)		2.02			1.27
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			(0.46	)		(0.23	)		(0.27	)		(0.14	)
From net realized gains	[______]			(0.95	)		(0.82	)		(0.80	)		(0.60	)
Total dividends/distributions	[______]			(1.41	)		(1.05	)		(1.07	)		(0.74	)
Net asset value, end of year	$[______]		$	8.18		$	12.59		$	14.81		$	13.86
Total investment return⁽²⁾		[______]%		(22.36	)%		(8.43	)%		14.93	%		9.72	%
Ratios/Supplemental data:
Net assets, end of year (in 000s)	$[______]		$	996,059		$	2,396,937		$	3,094,036		$	2,246,289
Ratio of expenses to average net assets	[______]%			1.19	%		1.09	%		1.13	%		1.14	%
Ratio of net investment income to average net assets	[______]%			0.84	%		1.19	%		1.28	%		1.41	%
Portfolio turnover	[______]%			122	%		83	%		74	%		83	%
	Class B
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of year	$[______]		$	12.35		$	14.52		$	13.60		$	13.08
Income (loss) from investment operations:
Net investment income⁽¹⁾	[______]			0.00	⁽³⁾		0.05			0.07			0.08
Net realized and unrealized gain (loss) from investment activities	[______]			(3.01	)		(1.31	)		1.79			1.06
Total income (loss) from investment operations	[______]			(3.01	)		(1.26	)		1.86			1.14
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			(0.39	)		(0.09	)		(0.14	)		(0.02	)
From net realized gains	[______]			(0.95	)		(0.82	)		(0.80	)		(0.60	)
Total dividends/distributions	[______]			(1.34	)		(0.91	)		(0.94	)		(0.62	)
Net asset value, end of year	$[______]		$	8.00		$	12.35		$	14.52		$	13.60
Total investment return⁽²⁾		[______]%		(22.98	)%		(9.14	)%		13.96	%		8.81	%
Ratios/Supplemental data:
Net assets, end of year (in 000s)	$[______]		$	33,685		$	90,258		$	139,061		$	161,704
Ratio of expenses to average net assets	[______]%			2.02	%		1.91	%		1.93	%		1.95	%
Ratio of net investment income to average net assets	[______]%			0.01	%		0.36	%		0.48	%		0.60	%
Portfolio turnover	[______]%			122	%		83	%		74	%		83	%

⁽¹⁾ Calculated using the average shares method.

⁽²⁾ Total investment return is calculated assuming a $10,000 investment on the first day of each year reported, reinvestment of all dividends and distributions, if any, at net asset value on the ex-dividend dates, and a sale at net asset value on the last day of each year reported. The figures do not include any applicable sales charges; results would be lower if they were included. Returns do not reflect the deduction of taxes that a shareholder would pay on dividends/distributions or the redemption of Fund shares.

⁽³⁾ Amount represents less than $0.005.

UBS Global Asset Management
64

	Class C
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of year	$[______]		$	12.29		$	14.48		$	13.58		$	13.09
Income (loss) from investment operations:
Net investment income⁽¹⁾	[______]			0.00	⁽³⁾		0.05			0.07			0.09
Net realized and unrealized gain (loss) from investment activities	[______]			(2.99	)		(1.30	)		1.79			1.05
Total income (loss) from investment operations	[______]			(2.99	)		(1.25	)		1.86			1.14
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			(0.39	)		(0.12	)		(0.16	)		(0.05	)
From net realized gains	[______]			(0.95	)		(0.82	)		(0.80	)		(0.60	)
Total dividends/distributions	[______]			(1.34	)		(0.94	)		(0.96	)		(0.65	)
Net asset value, end of year	$[______]		$	7.96		$	12.29		$	14.48		$	13.58
Total investment return⁽²⁾		[______]%		(22.93	)%		(9.15	)%		14.02	%		8.82	%
Ratios/Supplemental data:
Net assets, end of year (in 000s)	$[______]		$	456,577		$	985,156		$	1,274,539		$	1,044,517
Ratio of expenses to average net assets	[______]%			1.97	%		1.89	%		1.90	%		1.91	%
Ratio of net investment income to average net assets	[______]%			0.06	%		0.40	%		0.51	%		0.64	%
Portfolio turnover	[______]%			122	%		83	%		74	%		83	%
	Class Y
	Year ended June 30,
	2010		2009			2008			2007			2006
Net asset value, beginning of year	$[______]		$	12.80		$	15.04		$	14.06		$	13.51
Income (loss) from investment operations:
Net investment income⁽¹⁾	[______]			0.10			0.21			0.23			0.23
Net realized and unrealized gain (loss) from investment activities	[______]			(3.13	)		(1.37	)		1.85			1.09
Total income (loss) from investment operations	[______]			(3.03	)		(1.16	)		2.08			1.32
Less dividends/distributions:
From net investment income and net foreign currency gains	[______]			(0.48	)		(0.26	)		(0.30	)		(0.17	)
From net realized gains	[______]			(0.95	)		(0.82	)		(0.80	)		(0.60	)
Total dividends/distributions	[______]			(1.43	)		(1.08	)		(1.10	)		(0.77	)
Net asset value, end of year	$[______]		$	8.34		$	12.80		$	15.04		$	14.06
Total investment return⁽²⁾		[______]%		(22.12	)%		(8.20	)%		15.18	%		9.98	%
Ratios/Supplemental data:
Net assets, end of year (in 000s)	$[______]		$	224,281		$	477,603		$	648,479		$	463,122
Ratio of expenses to average net assets	[______]%			0.90	%		0.82	%		0.88	%		0.88	%
Ratio of net investment income to average net assets	[______]%			1.14	%		1.46	%		1.53	%		1.67	%
Portfolio turnover	[______]%			122	%		83	%		74	%		83	%

UBS Global Asset Management
65

UBS Global Frontier Fund—Financial highlights

The table below sets forth financial data for one share of beneficial interest outstanding throughout
each period presented.

	Class A
	For the year ended June 30,					For the period ended
	2010		2009			June 30, 2008⁽³⁾
Net asset value, beginning of period	$[_____]		$	8.75		$	10.00
Loss from investment operations:
Net investment loss⁽¹⁾	[_____]			(0.06	)		(0.05	)
Net realized and unrealized loss from investment activities	[_____]			(2.98	)		(1.10	)
Total loss from investment operations	[_____]			(3.04	)		(1.15	)
Less dividends/distributions:
From net investment income	[_____]			(0.12	)		(0.03	)
From net realized gains	[_____]			—			(0.07	)
Total dividends/distributions	[_____]			(0.12	)		(0.10	)
Net asset value, end of period	$[_____]		$	5.59		$	8.75
Total investment return⁽²⁾		[_____]%		(34.51	)%		(11.60	)%
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[_____]		$	48,395		$	79,572
Ratio of expenses to average net assets:
Before expense reimbursement	[_____]%			1.66	%		1.59	%⁽⁵⁾
After expense reimbursement	[_____]%			1.40	%		1.40	%⁽⁵⁾
Ratio of net investment loss to average net assets	[_____]%			(1.01	)%		(0.52	)%⁽⁵⁾
Portfolio turnover	[_____]%			148	%		84	%

	Class Y
	For the year ended June 30,					For the period ended
	2010		2009			June 30, 2008⁽³⁾
Net asset value, beginning of period	$[_____]		$	8.77		$	10.00
Loss from investment operations:
Net investment loss⁽¹⁾	[_____]			(0.04	)		(0.02	)
Net realized and unrealized loss from investment activities	[_____]			(2.99	)		(1.10	)
Total loss from investment operations	[_____]			(3.03	)		(1.12	)
Less dividends/distributions:
From net investment income	[_____]			(0.14	)		(0.04	)
From net realized gains	[_____]			—			(0.07	)
Total dividends/distributions	[_____]			(0.14	)		(0.11	)
Net asset value, end of period	$[_____]		$	5.60		$	8.77
Total investment return⁽²⁾		[_____]%		(34.30	)%		(11.33	)%
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[_____]		$	1,699		$	7,395
Ratio of expenses to average net assets:
Before expense reimbursement	[_____]%			1.35	%		1.31	%⁽⁵⁾
After expense reimbursement	[_____]%			1.15	%		1.15	%⁽⁵⁾
Ratio of net investment loss to average net assets	[_____]%			(0.73	)%		(0.26	)%⁽⁵⁾
Portfolio turnover	[_____]%			148	%		84	%

⁽¹⁾ Calculated using the average shares method.

⁽³⁾ For the period July 26, 2007 (commencement of operations) through June 30, 2008.

⁽⁴⁾ Amount represents less than $0.005 per share.

⁽⁵⁾ Annualized.

UBS Global Asset Management
66

	Class C
	For the year ended June 30,					For the period ended
	2010		2009			June 30, 2008⁽³⁾
Net asset value, beginning of period	$[____]		$	8.71		$	10.00
Loss from investment operations:
Net investment loss⁽¹⁾	[____]			(0.10	)		(0.12	)
Net realized and unrealized loss from investment activities	[____]			(2.96	)		(1.10	)
Total loss from investment operations	[____]			(3.06	)		(1.22	)
Less dividends/distributions:
From net investment income	[____]			(0.07	)		0.00	⁽⁴⁾
From net realized gains	[____]			—			(0.07	)
Total dividends/distributions	[____]			(0.07	)		(0.07	)
Net asset value, end of period	$[____]		$	5.58		$	8.71
Total investment return⁽²⁾		[____]%		(35.03	)%		(12.22	)%
Ratios/Supplemental data:
Net assets, end of period (in 000s)	$[____]		$	14,559		$	22,882
Ratio of expenses to average net assets:
Before expense reimbursement	[____]%			2.48	%		2.40	%⁽⁵⁾
After expense reimbursement	[____]%			2.15	%		2.15	%⁽⁵⁾
Ratio of net investment loss to average net assets	[____]%			(1.76	)%		(1.27	)%⁽⁵⁾
Portfolio turnover	[____]%			148	%		84	%

UBS Global Asset Management
67

Funds' privacy notice

This notice describes the privacy policy of the UBS Family of Funds, the UBS PACE Funds and all closed-end funds managed by UBS Global Asset Management (collectively, the "Funds"). The Funds are committed to protecting the personal information that they collect about individuals who are prospective, current or former investors.

The Funds collect personal information in order to process requests and transactions and to provide customer service. Personal information, which is obtained from applications, may include name(s), address, social security number or tax identification number, bank account information, other Fund holdings and any affiliation the person has with UBS Financial Services Inc. or its subsidiaries ("Personal Information"). The Funds limit access to Personal Information to those individuals who need to know that information in order to process transactions and service accounts. These individuals are required to maintain and protect the confidentiality of Personal Information. The Funds maintain physical, electronic and procedural safeguards to protect Personal Information. The Funds may share Personal Information described above with their affiliates for marketing and other business purposes, such as to facilitate the servicing of accounts. The Funds may share Personal Information described above with a non-affiliated third party if the entity is under contract to perform transaction processing or to service and maintain shareholder accounts on behalf of the Funds and otherwise as permitted by law. Any such contract will include provisions designed to ensure that the third party will uphold and maintain privacy standards when handling Personal Information. The Funds may also disclose Personal Information to regulatory authorities as required by applicable law. Except as described in this privacy notice, the Funds will not use Personal Information for any other purpose unless the Funds describe how such Personal Information will be used and clients are given an opportunity to decline approval of such use of Personal Information relating to them. The Funds endeavor to keep their customer files complete and accurate. The Funds should be notified if any Personal Information needs to be corrected or updated. Please call 1-800-647 1568 with any questions or concerns regarding your Personal Information or this privacy notice.

UBS Global Asset Management
68

(This page has been left blank intentionally.)

If you want more information about the Funds, the following documents are available free upon request:

Annual/Semiannual Reports

Additional information about the Funds' investments is available in the Funds' annual and semiannual reports to shareholders. In the Funds' annual reports, you will find a discussion of the market conditions and investment strategies that significantly affected the Funds' performance during the last fiscal year.

Statement of Additional Information (SAI)

The SAI provides more detailed information about the Funds and is incorporated by reference into this prospectus (i.e., it is legally considered a part of this prospectus).

You may discuss your questions about the Funds by contacting your investment professional. You may obtain free copies of the Funds' annual and semiannual reports and the SAI by contacting the Funds directly at 1-800-647 1568. The annual and semiannual reports and the SAI may also be obtained, free of charge, by accessing the documents on the Funds' Web Site at http://www.ubs.com/globalam.

You may review and copy information about the Funds, including shareholder reports and the SAI, at the Public Reference Room of the U.S. Securities and Exchange Commission (SEC) in Washington, D.C. You may obtain information about the operations of the SEC's Public Reference Room by calling the SEC at 202-551 8090. You may get copies of reports and other information about the Funds:

• For a fee, by electronic request at publicinfo@sec.gov or by writing the SEC's Public Reference Section, Washington, D.C. 20549-0102; or

• Free from the EDGAR Database on the SEC's Internet Web Site at: http://www.sec.gov.

The UBS Funds

Investment Company Act File No. 811-6637

The UBS Funds

UBS Global Equity Fund

UBS International Equity Fund

UBS U.S. Equity Alpha Fund

UBS U.S. Large Cap Equity Fund

UBS U.S. Large Cap Value Equity Fund

UBS U.S. Small Cap Growth Fund

Prospectus

October 28, 2010

UBS Global Equity Fund; Class A (BNGEX), Class B (BNEBX), Class C (BNECX), Class Y (BPGEX)

UBS International Equity Fund; Class A (BNIEX), Class B (BNIBX), Class C (BNICX), Class Y (BNUEX)

UBS U.S. Equity Alpha Fund; Class A (BEAAX), Class C (BEACX), Class Y (BEAYX)

UBS U.S. Large Cap Equity Fund; Class A (BNEQX), Class B (BNQBX), Class C (BNQCX), Class Y (BPEQX)

UBS U.S. Large Cap Value Equity Fund; Class A (BNVAX), Class B (BNVBX), Class C (BNVCX), Class Y (BUSVX)

UBS U.S. Small Cap Growth Fund; Class A (BNSCX), Class B (BNMBX), Class C (BNMCX), Class Y (BISCX)

This prospectus offers Class A, Class C and Class Y shares in six of the eighteen series of The UBS Funds (the "Trust") listed above (each, a "Fund" and, collectively, the "Funds"). For each Fund except the UBS U.S. Equity Alpha Fund, this prospectus offers Class B shares only to existing shareholders of Class B shares with respect to the reinvestment of dividends and distributions and exchanges of Class B shares of the Funds and other series of the UBS Family of Funds. The UBS U.S. Equity Alpha Fund does not offer Class B shares.

Not FDIC Insured. May lose value. No bank guarantee.

The UBS Funds

Contents

The UBS Funds

What every investor should know about the Funds

Fund summaries

UBS Global Equity Fund				Page 4

UBS International Equity Fund				Page 8

UBS U.S. Equity Alpha Fund				Page 12

UBS U.S. Large Cap Equity Fund				Page 16

UBS U.S. Large Cap Value Equity Fund				Page 20

UBS U.S. Small Cap Growth Fund				Page 24

More information about the Funds

UBS Global Equity Fund—Investment objective, strategies, securities selection and risks				Page 28

UBS International Equity Fund—Investment objective, strategies, securities selection and risks				Page 30

UBS U.S. Equity Alpha Fund—Investment objective, strategies, securities selection and risks				Page 33

UBS U.S. Large Cap Equity Fund—Investment objective, strategies, securities selection and risks				Page 36

UBS U.S. Large Cap Value Equity Fund—Investment objective, strategies, securities selection and risks				Page 38

UBS U.S. Small Cap Growth Fund—Investment objective, strategies, securities selection and risks				Page 40

Your investment

Information for managing your fund account

Managing your fund account				Page 42

—Flexible pricing				Page 42

—Buying shares				Page 47

—Selling shares				Page 50

—Exchanging shares				Page 52

—Pricing and valuation				Page 53

UBS Global Asset Management
2

The UBS Funds

Additional information

Additional important information about the funds

Management				Page 55

Disclosure of portfolio holdings				Page 59

Dividends and taxes				Page 59

Supplemental investment advisor performance information				Page 61

Financial highlights				Page 71

Where to learn more about the funds				Back cover

Please find the UBS Funds' Privacy Notice on page [__] of this Prospectus.

The Funds are not a complete or balanced investment program.

UBS Global Asset Management
3

UBS Global Equity Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

Class A

Class B⁽¹⁾

Class C

Class Y

Maximum front-end sales
charge (load) imposed on
purchases (as a % of
offering price)

5.50%

None

Maximum contingent deferred
sales charge (load) (CDSC)
(as a % of purchase or sales
price, whichever is less)

None

5.00%

1.00%

None

Redemption fee (as a
percentage of amount
redeemed within 90 days
of purchase, if applicable)

1.00%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN RULE 485(B) FILING:]

Class A

Class B

Class C

Class Y

Management fees

[0.75

Distribution and/or service
(12b-1) fees

0.25

1.00

None

Other expenses⁽¹⁾

[__]

Total annual fund operating
expenses

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management fee
waiver/expense reimbursements⁽²⁾

[__]

¹ "Other expenses" include "Acquired fund fees and expenses," which were less than 0.01% of the average net assets of the Fund.

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses), through the period ending October 27, 2011, do not exceed 1.50% for Class A shares, 2.25% for Class B shares, 2.25% for Class C shares and 1.25% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
4

result from the contractual fee waiver and expense reimbursement agreement with the Advisor for the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 years

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

Management process

In the global universe, the Advisor uses a disciplined price to intrinsic value approach that seeks to take advantage of pricing anomalies in markets. In selecting securities, the Advisor focuses on, among other things, identifying discrepancies between a security's fundamental value and its market price. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Advisor will select a security whose fundamental value it estimates to be greater than its market value at any given time. For each stock under analysis, the Advisor bases its estimates of value upon country, economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices, with the aim of constructing a portfolio of stocks across industries and countries with attractive relative price/value characteristics.

Main risks

Market risk: The market value of the Fund's investments may fluctuate, sometimes rapidly or unpredictably, as the stock and bond markets fluctuate. Market risk may affect a single issuer, industry, or sector of the economy, or it may affect the market as a whole.

UBS Global Asset Management
5

in emerging market issuers. In addition, investments in emerging market issuers may decline in value because of unfavorable foreign government actions, greater risks of political instability or the absence of accurate information about emerging market issuers.

Investment results

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			5 years			10 years			Life of class
Class A (6/30/97)
Return before taxes		37.09	%		1.01	%		1.62	%		3.15	%
Class B (12/11/01)
Return before taxes		39.00			1.02			N/A			3.63
Class C (11/27/01)⁽¹⁾
Return before taxes		42.98			1.38			N/A			3.40
Class Y (1/28/94)
Return before taxes		45.37			2.44			2.52			5.92
Return after taxes on distributions		44.44			1.92			1.71			4.63
Return after taxes on distributions and sale of fund shares		29.72			1.86			1.74			4.49
MSCI World Free Index (net)		29.99			2.01			(0.24	)		*

(Index reflects no deduction for fees and expenses.)

* Average annual total returns for the MSCI World Free Index (net) for the life of each class were as follows: Class A—3.40%; Class B—3.84%; Class C—3.87%; Class Y—5.57%.

¹ Prior to September 30, 2003, Class C shares were subject to a maximum front-end sales charge of 1.00%; this front-end sales charge is not reflected in the average annual total returns presented for the Class C shares shown above.

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Nicholas Melhuish, portfolio manager of the Fund since 2008.

UBS Global Asset Management
6

Tax information

UBS Global Asset Management
7

UBS International Equity Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income by investing primarily in the equity securities of non-US issuers.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

Class A

Class B⁽¹⁾

Class C

Class Y

Maximum front-end sales
charge (load) imposed on
purchases (as a % of
offering price)

5.50%

None

Maximum contingent deferred
sales charge (load) (CDSC)
(as a % of purchase or sales
price, whichever is less)

None

5.00%

1.00%

None

Redemption fee (as a
percentage of amount
redeemed within 90 days
of purchase, if applicable)

1.00%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN RULE 485(B) FILING:]

Class A

Class B

Class C

Class Y

Management fees

[0.80

Distribution and/or service
(12b-1) fees

0.25

1.00

None

Other expenses

[__]

Acquired fund fees and expenses

[__]

Total annual fund operating
expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management fee
waiver/expense reimbursements⁽²⁾

[__]

² UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), has agreed irrevocably to waive its fees and reimburse certain expenses (excluding expenses incurred through investment in other investment companies and interest expense) so that total operating expenses (excluding expenses incurred through investment in other investment companies and interest expense) of the Fund do not exceed 1.25% for Class A shares, 2.00% for Class B shares, 2.00% for Class C shares and 1.00% for Class Y shares.

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods unless otherwise stated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The costs described in the example reflect the expenses of the Fund that would result from the irrevocable fee waiver and expense reimbursement for all years. Although your actual costs

UBS Global Asset Management
8

may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 years

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

Management process

A portion of the Advisor's investment decisions with respect to the Fund's portfolio is based upon price/value discrepancies as identified by its fundamental valuation process. The Advisor utilizes growth-oriented strategies with respect to the remainder of the Fund's portfolio.

In selecting securities for the portion of the Fund that is managed according to the Advisor's fundamental valuation process, the Advisor focuses on, among other things, identifying discrepancies between a security's fundamental value and its market price. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Advisor will select a security whose fundamental value it estimates to be greater than its market value at any given time. For each stock under analysis, the Advisor bases its estimates of value upon country, economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices, with the aim of constructing a portfolio of stocks across industries and countries with attractive relative price/value characteristics.

With respect to the portion of the Fund's portfolio that is managed according to the Advisor's growth-oriented strategies, the Advisor seeks to invest in companies which are undergoing positive sustainable fundamental change driving a period of above average earnings growth. Hallmarks of such companies include a dominant market position and franchise, major technological edge or unique competitive advantage. In selecting securities for this strategy, the Advisor selects companies it believes can sustain an above average return on invested capital and over a longer period of time than is reflected in current market prices.

Main risks

Limited capitalization risk: The risk that securities of smaller capitalization companies tend to be more volatile and less liquid than securities of larger

UBS Global Asset Management
9

capitalization companies. This can have a disproportionate effect on the market price of smaller capitalization companies and affect the Fund's ability to purchase or sell these securities. In general, smaller capitalization companies are more vulnerable than larger companies to adverse business or economic developments and they may have more limited resources.

Investment results

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			5 years			10 years			Life of class
Class A (6/30/97)
Return before taxes		31.75	%		1.44	%		0.63	%		2.34	%
Class B (2/12/02)
Return before taxes		33.26			1.54			N/A			5.14
Class C (1/25/02)⁽¹⁾
Return before taxes		37.35			1.85			N/A			4.89
Class Y (8/31/93)
Return before taxes		39.65			2.82			1.40			4.66
Return after taxes on distributions		37.58			1.39			(0.10	)		3.20
Return after taxes on distributions and sale of fund shares		26.70			2.17			0.68			3.44
MSCI World Free ex USA Index (net)		33.67			4.07			1.62			*

(Index reflects no deduction for fees and expenses.)

* Average annual total returns for the MSCI World Free ex USA Index (net) for the life of each class were as follows: Class A—4.04%; Class B—7.84%; Class C—7.84%; Class Y—5.25%.

1 Prior to September 30, 2003, Class C shares were subject to a maximum front-end sales charge of 1.00%; this front-end sales charge is not reflected in the average annual total returns presented for the Class C shares shown above.

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

UBS Global Asset Management
10

Portfolio managers:

• Nicholas Irish, portfolio manager of the Fund since 2008.

• Vincent Willyard, portfolio manager of the Fund since 2009.

Tax information

UBS Global Asset Management
11

UBS U.S. Equity Alpha Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income, while controlling risk.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

Class A

Class C

Class Y

Maximum front-end sales charge
(load) imposed on purchases
(as a % of offering price)

5.50%

None

Maximum contingent deferred sales
charge (load) (CDSC) (as a % of
purchase or sales price, whichever is less)

None

1.00%

None

Redemption fee (as a percentage of
amount redeemed within 90 days of
purchase, if applicable)

1.00%

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN RULE 485(B) FILING:]

Class A

Class C

Class Y

Management fees

[1.00

Distribution and/or service (12b-1) fees

0.25

1.00

None

Other expenses:

Dividend expense and securities loan
fees for securities sold short

[__]

Other

[__]

Total other expenses

[__]

Acquired fund fees and expenses

[__]

Total annual fund operating expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating expenses
after management fee waiver/expense
reimbursements⁽²⁾

[__]

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses and securities loan fees and dividend expenses for securities sold short) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses and securities loan fees and dividend expenses for securities sold short), through the period ending October 27, 2011, otherwise do not exceed 1.50% for Class A shares, 2.25% for Class C shares and 1.25% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements, to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
12

1 year

3 years

5 years

10 years

Class A

$[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

The Fund may also invest in Exchange Traded Funds ("ETFs") and similarly structured pooled investments in order to provide exposure to the equity markets while maintaining liquidity. The Fund may also engage in short sales of ETFs and similarly structured pooled investments in order to reduce exposure to certain sectors of the equity markets.

Management process

The Advisor's investment style is singularly focused on investment fundamentals. The Advisor believes that investment fundamentals determine and describe future cash flows that define fundamental investment value. The Advisor tries to identify and exploit periodic discrepancies between market prices and fundamental value. These price/value discrepancies are used as the building blocks for portfolio construction.

In constructing the Fund's portfolio, the Advisor uses primarily fundamental analysis and, to a lesser extent, quantitative analysis to identify securities that are underpriced and overpriced relative to their fundamental value. In general, the Advisor buys securities "long" for the Fund's portfolio that it believes are underpriced and will outperform, and sells securities "short" that it believes are overpriced and will underperform. The Fund anticipates that it will normally maintain long positions in equity securities and securities with equity-like characteristics equal to 120% to 140% of the value of its net assets, short positions in equity securities and securities with equity-like characteristics equal to 20% to 40% of the value of its net assets and cash positions equal to 0% to 10% of the value of its net assets. This active management process is intended to produce performance that outperforms the Fund's benchmark. The Fund's ability to fully implement its investment strategy may be affected by (i) regulatory restrictions prohibiting short sales of certain securities that may be imposed from time to time or (ii) the Advisor's written procedures designed to address potential conflicts that exist where the Advisor manages both long-only and long/short accounts and/or funds.

In employing its investment strategies for the Fund, the Advisor attempts to outperform (before taking into account any Fund fees or expenses) the Russell 1000 Index by 2.50% to 5.00% per year with a similar level of market risk as the benchmark over a full market cycle. A typical market cycle is 4 to 7 years. The Advisor does not represent or guarantee that the Fund will meet this total return goal.

UBS Global Asset Management
13

Main risks

Management risk: The Advisor's judgments about the fundamental value of securities acquired by the Fund may prove to be incorrect.

Unseasoned company risk: The Fund may invest in relatively new or unseasoned companies that are in their early stages of development. Securities of unseasoned companies present greater risks than securities of larger, more established companies. The companies may have greater risks because they (i) may be dependent on a small number of products or services; (ii) may lack substantial capital reserves; and (iii) do not have proven track records.

Investment results

UBS Global Asset Management
14

from year to year and by showing how the Fund's average annual total returns compare with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance for the Fund is available at http://globalam-us.ubs.com/corpweb/performance.do.

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			Life of class
Class A (9/26/06)
Return before taxes		28.36	%		(6.21	)%
Class C (9/26/06)
Return before taxes		33.82			(5.29	)
Class Y (9/26/06)
Return before taxes		36.55			(4.32	)
Return after taxes on distributions		36.55			(4.95	)
Return after taxes on distributions and sale of fund shares		23.76			(3.85	)
Russell 1000 Index		28.43			(2.98	)

(Index reflects no deduction for fees, expenses or taxes.)

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Thomas Cole, portfolio manager of the Fund since its inception.

• John Leonard, portfolio manager of the Fund since its inception.

• Thomas Digenan, portfolio manager of the Fund since its inception.

• Scott Bondurant, portfolio manager of the Fund since its inception.

Tax information

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15

UBS U.S. Large Cap Equity Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

Class A

Class B⁽¹⁾

Class C

Class Y

Maximum front-end sales
charge (load) imposed on
purchases (as a % of
offering price)

5.50%

None

Maximum contingent deferred
sales charge (load) (CDSC)
(as a % of purchase or sales
price, whichever is less)

None

5.00%

1.00%

None

Redemption fee (as a
percentage of amount
redeemed within 90 days
of purchase, if applicable)

1.00%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN RULE 485(B) FILING:]

Class A

Class B

Class C

Class Y

Management fees

[0.69

Distribution and/or service
(12b-1) fees

0.25

1.00

None

Other expenses⁽¹⁾

[__]

Total annual fund operating
expenses

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management fee
waiver/expense reimbursements⁽²⁾

[__]

¹ "Other expenses" include "Acquired fund fees and expenses," which were less than 0.01% of the average net assets of the Fund.

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses), through the period ending October 27, 2011, do not exceed 1.20% for Class A shares, 1.95% for Class B shares, 1.95% for Class C shares and 0.95% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
16

1 year

3 years

5 years

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities of US large capitalization companies. The Fund defines large capitalization companies as those with a market capitalization of at least $3 billion. The Fund may invest up to 20% of its net assets in the securities of US companies that have market capitalizations within the range of the Russell 1000 Index but below $3 billion in market capitalization and/or the securities of foreign companies in developed countries. Investments in equity securities may include, but are not limited to, dividend-paying securities, common stock, preferred stock, shares of investment companies, convertible securities, warrants and rights.

Management process

In selecting securities, the Advisor focuses on, among other things, identifying discrepancies between a security's fundamental value and its market price. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Advisor will select a security whose fundamental value it estimates to be greater than its market value at any given time. For each stock under analysis, the Advisor bases its estimates of value upon economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices, with the aim of constructing a portfolio of stocks with attractive relative price/value characteristics.

Main risks

UBS Global Asset Management
17

and management risks, mispricing or valuation complexity. These risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Focused investment risk: The risk that investing in a select group of securities could subject the Fund to greater risk of loss and could be considerably more volatile than the Fund's primary benchmark or other mutual funds that are diversified across a greater number of securities.

Investment results

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			5 years			10 years			Life of class
Class A (6/30/97)
Return before taxes		24.41	%		(1.54	)%		1.70	%		2.88	%
Class B (11/5/01)
Return before taxes		25.69			(1.54	)		N/A			2.53
Class C (11/13/01)⁽¹⁾
Return before taxes		29.67			(1.16	)		N/A			2.01
Class Y (2/22/94)
Return before taxes		32.07			(0.14	)		2.57			7.56
Return after taxes on distributions		31.56			(0.81	)		1.70			6.32
Return after taxes on distributions and sale of fund shares		21.51			(0.19	)		1.96			6.23
Russell 1000 Index		28.43			0.79			(0.49	)		*

(Index reflects no deduction for fees, expenses or taxes.)

* Average annual total returns for the Russell 1000 Index for the life of each class were as follows: Class A—4.02%; Class B—2.63%; Class C—2.22%; Class Y—7.73%.

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Thomas Cole, portfolio manager of the Fund since 2001.

• John Leonard, portfolio manager of the Fund since its inception.

• Thomas Digenan, portfolio manager of the Fund since 2001.

UBS Global Asset Management
18

In general, the minimum initial investment is $1,000 and the minimum subsequent investment is $100.

Tax information

UBS Global Asset Management
19

UBS U.S. Large Cap Value Equity Fund
Fund summary

Investment objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

Class A

Class B⁽¹⁾

Class C

Class Y

Maximum front-end sales
charge (load) imposed on
purchases (as a % of
offering price)

5.50%

None

Maximum contingent deferred
sales charge (load) (CDSC)
(as a % of purchase or sales
price, whichever is less)

None

5.00%

1.00%

None

Redemption fee (as a
percentage of amount
redeemed within 90 days
of purchase, if applicable)

1.00%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN RULE 485(B) FILING:]

Class A

Class B

Class C

Class Y

Management fees

[0.70

Distribution and/or service
(12b-1) fees

0.25

1.00

None

Other expenses

[__]

Acquired fund fees and expenses

[__]

Total annual fund operating
expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management fee
waiver/expense reimbursements⁽²⁾

[__]

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses), through the period ending October 27, 2011, do not exceed 1.20% for Class A shares, 1.95% for Class B shares, 1.95% for Class C shares and 0.95% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
20

each year and that the Fund's operating expenses remain the same. The costs described in the example reflect the expenses of the Fund that would result from the contractual fee waiver and expense reimbursement agreement with the Advisor for the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 years

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities of US large capitalization companies. The Fund defines large capitalization companies as those with a market capitalization of at least $3 billion. The Fund may invest up to 20% of its net assets in companies that have market capitalizations within the range of the Russell 1000 Value Index but below $3 billion in market capitalization. Investments in equity securities may include, but are not limited to, dividend-paying securities, common stock, preferred stock, shares of investment companies, convertible securities, warrants and rights.

Management process

In selecting securities, the Advisor focuses on, among other things, identifying discrepancies between a security's fundamental value and its market price. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Fund will select a security whose fundamental value it estimates to be greater than its market value at any given time. For each stock under analysis, the Advisor bases its estimates of value upon economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices with the aim of constructing a portfolio of stocks with attractive relative price/value characteristics. The Fund will generally only invest in stocks that at the time of purchase are contained in its benchmark.

Main risks

Derivatives risk: The value of "derivatives"—so-called because their value "derives" from the value of an underlying asset, reference rate or index—may rise or fall more rapidly than other investments. For some derivatives, it is possible for the Fund to lose more than the amount it invested in the derivative. The risk of investing in certain derivative instruments also may include liquidity, interest rate, market, credit and management risks, mispricing or valuation complexity. These risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

UBS Global Asset Management
21

the velocity of losses and can result in losses to the Fund that exceed the amount originally invested.

Investment results

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			5 years			Life of class
Class A (12/7/01)
Return before taxes		15.92	%		(2.09	)%		1.51	%
Class B (11/8/01)
Return before taxes		16.74			(1.96	)		2.07
Class C (12/12/01)⁽¹⁾
Return before taxes		20.84			(1.69	)		1.78
Class Y (6/29/01)
Return before taxes		23.00			(0.70	)		2.32
Return after taxes on distributions		22.57			(2.19	)		1.03
Return after taxes on distributions and sale of fund shares		15.51			(0.50	)		2.01
Russell 1000 Value Index		19.69			(0.25	)		*

(Index reflects no deduction for fees, expenses or taxes.)

* Average annual total returns for the Russell 1000 Value Index for the life of each class were as follows: Class A—2.98%; Class B—3.39%; Class C—3.21%; Class Y—2.25%.

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Thomas Cole, portfolio manager of the Fund since 2001.

• John Leonard, portfolio manager of the Fund since its inception.

• Thomas Digenan, portfolio manager of the Fund since 2001.

Tax information

UBS Global Asset Management
22

UBS Global Asset Management
23

UBS U.S. Small Cap Growth Fund
Fund summary

Investment objective

The Fund seeks to provide long-term capital appreciation.

Fees and expenses

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for a sales charge waiver or discount if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page [__] of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page [__] of the Fund's statement of additional information ("SAI").

Shareholder fees (fees paid directly from your investment)

Class A

Class B⁽¹⁾

Class C

Class Y

Maximum front-end sales
charge (load) imposed on
purchases (as a % of
offering price)

5.50%

None

Maximum contingent deferred
sales charge (load) (CDSC)
(as a % of purchase or sales
price, whichever is less)

None

5.00%

1.00%

None

Redemption fee (as a
percentage of amount
redeemed within 90 days
of purchase, if applicable)

1.00%

01.00%

¹ Class B shares are only offered to existing Class B shareholders with respect to reinvestment of dividends/distributions or exchanges of Class B shares of other UBS funds.

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

[TO BE PROVIDED IN RULE 485(B) FILING:]

Class A

Class B

Class C

Class Y

Management fees

[0.85

Distribution and/or service
12b-1) fees

0.25

1.00

None

Other expenses

[__]

Acquired fund fees and
expenses

[__]

Total annual fund operating
expenses⁽¹⁾

[__]

Management fee waiver/expense
reimbursements

[__]

Total annual fund operating
expenses after management fee
waiver/expense reimbursements⁽²⁾

[__]

² The Trust, with respect to the Fund, and UBS Global Asset Management (Americas) Inc., the Fund's investment advisor ("UBS Global AM (Americas)" or the "Advisor"), have entered into a written agreement pursuant to which the Advisor has agreed to waive a portion of its management fees and/or to reimburse expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions, extraordinary expenses and securities loan fees and dividend expenses for securities sold short) to the extent necessary so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions , extraordinary expenses and securities loan fees and dividend expenses for securities sold short), through the period ending October 27, 2011, do not exceed 1.40% for Class A shares, 2.15% for Class B shares, 2.15% for Class C shares and 1.15% for Class Y shares. Pursuant to the written agreement, the Advisor is entitled to be reimbursed for any fees it waives and expenses it reimburses for a period of three years following such fee waivers and expense reimbursements to the extent that such reimbursement of the Advisor by the Fund will not cause the Fund to exceed any applicable expense limit that is in place for the Fund.

Example

UBS Global Asset Management
24

of those periods unless otherwise stated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The costs described in the example reflect the expenses of the Fund that would result from the contractual fee waiver and expense reimbursement agreement with the Advisor for the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 year

3 years

5 years

10 years

Class A

$[__]

Class B (assuming sale of all
shares at end of period)

[__]

Class B (assuming no sale
of shares)

[__]

Class C (assuming sale of all
shares at end of period)

[__]

Class C (assuming no sale
of shares)

[__]

Class Y

[__]

Portfolio turnover

Principal strategies
Principal investments

Under certain market conditions, the Fund may invest in companies at the time of their initial public offering (IPO).

Management process

In selecting securities, the Advisor seeks to invest in companies that possess dominant market positions or franchises, a major technological edge, or a unique competitive advantage. To this end, the Advisor considers earnings revision trends, positive stock price momentum and sales acceleration when selecting securities. The Fund may invest in emerging growth companies, which are companies that the Advisor expects to experience above-average earnings or cash flow growth or meaningful changes in underlying asset values.

Main risks

UBS Global Asset Management
25

liquid and more difficult to sell and to value than securities of US issuers.

Investment results

Average annual total returns
(for the periods ended December 31, 2009)

Class (inception date)	1 year			5 years			10 years			Life of class
Class A (12/31/98)
Return before taxes		25.84	%		(3.30	)%		1.86	%		4.92	%
Class B (11/7/01)
Return before taxes		27.21			(3.25	)		N/A			2.37
Class C (11/19/01)⁽¹⁾
Return before taxes		30.99			(2.94	)		N/A			1.93
Class Y (9/30/97)
Return before taxes		33.41			(1.95	)		2.70			4.06
Return after taxes on distributions		33.41			(2.46	)		1.59			3.14
Return after taxes on distributions and sale of fund shares		21.72			(1.67	)		1.83			3.13
Russell 2000 Growth Index		34.47			0.87			(1.37	)		*

(Index reflects no deduction for fees, expenses or taxes.)

* Average annual total returns for the Russell 2000 Growth Index for the life of each class were as follows: Class A—2.02%; Class B—3.98%; Class C—3.49%; Class Y—1.20%.

Investment advisor:

UBS Global Asset Management (Americas) Inc. serves as the investment advisor to the Fund.

Portfolio managers:

• Paul Graham, portfolio manager of the Fund since its inception.

• David Wabnik, portfolio manager of the Fund since its inception.

UBS Global Asset Management
26

either through a financial advisor or directly from the Fund. In general, the minimum initial investment is $1,000 and the minimum subsequent investment is $100.

Tax information

UBS Global Asset Management
27

The UBS Funds

More information about the Funds—UBS Global Equity Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities. Investments in equity securities may include, but are not limited to, dividend-paying securities, common stock and preferred stock of US and foreign issuers. The Fund may invest in issuers from both developed and emerging markets. The Advisor, on behalf of the Fund, intends to diversify broadly among countries, but reserves the right to invest a substantial portion of the Fund's assets in one or more countries if economic and business conditions warrant such investments. The Fund invests its assets in investments that are economically tied to a number of countries throughout the world. [TO BE PROVIDED IN RULE 485(B) FILING:] As of June 30, 2010, the Fund was invested in securities of issuers from [__] countries and approximately [__]% of its assets were invested in US equity securities. The Fund may invest in companies of any size.

The Fund will notify shareholders at least 60 days prior to any change in its policy of investing at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities.

Securities selection

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

• Market risk—The risk that the market value of the Fund's investments will fluctuate as the stock and

UBS Global Asset Management
28

The UBS Funds

More information about the Funds—UBS Global Equity Fund

bond markets fluctuate. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole.

• Derivatives risk—Derivatives involve risks different from, and possibly greater than, the risks associated with investing directly in securities and other instruments. Derivatives require investment techniques and risk analyses different from those of other investments. If the Advisor incorrectly forecasts the value of securities, currencies, interest rates, or other economic factors in using derivatives, the Fund might have been in a better position if the Fund had not entered into the derivatives. While some strategies involving derivatives can protect against the risk of loss, the use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund to lose more than the amount the Fund invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

• Leverage risk associated with financial instruments—Certain derivatives that the Fund may use may create leverage. Derivatives that involve leverage can result in losses to the Fund that exceed the amount originally invested in the derivatives.

Other information

UBS Global Asset Management
29

The UBS Funds

More information about the Funds—UBS International Equity Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income by investing primarily in the equity securities of non-US issuers.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities. Investments in equity securities may include, but are not limited to, dividend-paying securities, common stock and preferred stock of issuers located throughout the world. The Fund may invest in issuers from both developed and emerging markets. The Advisor, on behalf of the Fund, intends to diversify broadly among countries, but reserves the right to invest a substantial portion of the Fund's assets in one or more countries if economic and business conditions warrant such investments. The Fund invests its assets in investments that are economically tied to a number of countries throughout the world. [TO BE PROVIDED IN RULE 485(b) FILING:] As of June 30, 2010, the Fund was invested in securities of issuers from [__] countries and none of its assets were invested in US operating companies. The Fund may invest in stocks of companies of any size.

Securities selection

With respect to the portion of the Fund's portfolio that is managed according to the Advisor's growth-oriented strategies, the Advisor seeks to invest in companies which are undergoing positive sustainable fundamental change driving a period of above average earnings growth. Hallmarks of such companies include a dominant market position and franchise, major technological edge or unique competitive advantage. To identify attractive securities the Advisor uses a proprietary screening system to rank stocks based upon a series of

UBS Global Asset Management
30

The UBS Funds

More information about the Funds—UBS International Equity Fund

growth, valuation and momentum metrics. In employing these metrics, as well as in-depth fundamental company analysis, the Advisor selects companies it believes can sustain an above average return on invested capital and over a longer period of time than is reflected in current market prices.

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

UBS Global Asset Management
31

The UBS Funds

More information about the Funds—UBS International Equity Fund

to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

Other information

UBS Global Asset Management
32

The UBS Funds

More information about the Funds—UBS U.S. Equity Alpha Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income, while controlling risk.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities of US companies. The Fund will generally invest in equity securities of large and mid capitalization companies but is permitted to invest up to 15% of its net assets in small capitalization companies. The Fund will maintain both long positions and short positions in equity securities and securities with equity-like characteristics. For purposes of the Fund's investments, US companies include any company organized outside of the United States but which: (a) is included in the Fund's benchmark index; (b) has its headquarters or principal location of operations in the United States; (c) whose primary listing is on a securities exchange or market in the United States; or (d) derives a majority of its revenues in the United States. In addition, up to 20% of the Fund's net assets may be invested in securities of foreign companies in developed countries, including long and short positions in foreign equity securities and securities with equity-like characteristics.

The Fund may also invest in ETFs and similarly structured pooled investments in order to provide exposure to the equity markets while maintaining liquidity. The Fund may also engage in short sales of ETFs and similarly structured pooled investments in order to reduce exposure to certain sectors of the equity markets.

Securities selection

UBS Global AM (Americas) is the Fund's investment advisor. The Advisor's investment style is singularly focused on investment fundamentals. The Advisor believes that investment fundamentals determine and describe future cash flows that define fundamental investment value. The Advisor tries to identify and exploit periodic discrepancies between market prices and fundamental value. These price/value discrepancies are used as the building blocks for portfolio construction.

In constructing the Fund's portfolio, the Advisor uses primarily fundamental analysis and, to a lesser extent, quantitative analysis to identify securities that are underpriced and overpriced relative to their fundamental value. In general, the Advisor buys securities "long" for the Fund's portfolio that it believes are underpriced and will outperform, and sells securities "short" that it believes are overpriced and will underperform. The Fund anticipates that it will normally maintain long positions in equity securities and securities with equity-like characteristics equal to 120% to 140% of the value of its net assets, short positions in equity securities and securities with equity-like characteristics equal to 20% to 40% of the value of its net assets and cash positions equal to 0% to 10% of the value of its net assets. This active management process is intended to produce performance that outperforms the Fund's benchmark. The Fund's ability to fully implement its investment strategy may be affected by regulatory restrictions prohibiting short sales of certain securities that may be imposed from time to time.

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More information about the Funds—UBS U.S. Equity Alpha Fund

The Fund may invest in cash or cash equivalent instruments, including shares of an affiliated investment company. When market conditions warrant, the Fund may make substantial temporary defensive investments in cash equivalents, which may affect the Fund's ability to pursue its investment objective. The Advisor actively manages the Fund. As such, increased portfolio turnover may result in higher costs for brokerage commissions, transaction costs and taxable gains. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund's performance.

More about short sales. When the Fund takes a long position in a security, the Advisor purchases the security outright for the Fund's portfolio. When the Fund takes a short position in a security, the Advisor sells a security that the Fund does not own at the current market price and delivers to the buyer a security that the Fund has borrowed. To complete or close out the short sale transaction, the Fund buys the same security in the market and returns it to the lender. The Fund makes money when the market price of the security goes down after the short sale. Conversely, if the price of the security goes up after the sale, the Fund will lose money because it will have to pay more to replace the borrowed security than it received.

Until the Fund replaces the borrowed security, the Fund is required to maintain during the period of the short sale the short sale proceeds that the broker holds (which may be invested in equity securities) and any additional assets the lending broker requires as collateral. The Fund is also required to designate, on its books or the books of its custodian, liquid assets (less any additional collateral held by the broker) to cover the short sale obligation, marked to market daily. The Fund is also required to repay the lender of the security any dividends or interest that accrue on the security during the period of the loan.

The Fund's ability to fully implement its investment strategy may also be affected by the Advisor's written procedures designed to address potential conflicts that exist where the Advisor manages both long-only and long/short accounts and/or funds. For example, the Advisor restricts short sales in excess of a stated amount of the average daily trading volume of a stock if the Advisor deems it may negatively impact the market and drive down the price of a security that is also held in the Advisor's long only accounts and/or funds. In addition, the Advisor's procedures require short sales to be executed after long-only sell orders in the same stock if the long-only sell orders are in excess of a stated number of shares. This procedure may delay the short sales and therefore the price at which the short sale is executed. Therefore, the price may be lower than had the long-only order not taken precedence, and the potential benefit of the short sale would be reduced.

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

• Management risk—The Advisor's judgments about the fundamental values of securities acquired by the Fund may prove to be incorrect. While it is the intent of the Advisor to take long positions in securities that are undervalued and are expected to subsequently outperform the market and short positions in securities that are overvalued and are expected to underperform the market, in various market conditions, there is no assurance that the Advisor will be successful in its selection process.

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More information about the Funds—UBS U.S. Equity Alpha Fund

a short sale arises from increases in the value of the security sold short, such loss, like the price of the security sold short, is theoretically unlimited. By contrast, a Fund's loss on a long position arises from decreases in the value of the security and therefore is limited by the fact that a security's value cannot drop below zero. It is possible that the Fund's securities held long will decline in value at the same time that the value of the securities sold short increases, thereby increasing the potential for loss.

• Foreign investing risk—The risk that prices of the Fund's investments in foreign securities may go down because of unfavorable foreign government actions, political instability or the absence of accurate information about foreign issuers. In addition, a decline in the value of foreign currencies relative to the US dollar will reduce the value of securities denominated in those currencies. Also, foreign securities are sometimes less liquid and harder to buy, sell and to value than securities of US issuers.

• Limited capitalization risk—The risk that investments in small and mid capitalization size companies may be more volatile than investments in larger companies, as small and mid capitalization companies generally experience higher growth and failure rates than larger capitalization companies. The trading volume of these securities is normally lower than that of larger companies. Such securities may be less liquid than others and this could make it difficult to sell a security at a time or price desired. Changes in the demand for these securities generally have a disproportionate effect on their market price, tending to make prices rise more in response to buying demand and fall more in response to selling pressure than prices for larger companies.

• Unseasoned company risk—The Fund may invest in relatively new or unseasoned companies that are in their early stages of development. Securities of unseasoned companies present greater risks than securities of larger, more established companies. The companies may have greater risks because they (i) may be dependent on a small number of products or services; (ii) may lack substantial capital reserves; and (iii) do not have proven track records.

Other information

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More information about the Funds—UBS U.S. Large Cap Equity Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities of US large capitalization companies. The Fund defines large capitalization companies as those with a market capitalization of at least $3 billion. If movement in the market price causes a security to change from one capitalization range to another, the Fund is not required to dispose of the security. The Fund may invest up to 20% of its net assets in the securities of US companies that have market capitalizations within the range of the Russell 1000 Index but below $3 billion in market capitalization and/or the securities of foreign companies in developed countries. Investments in equity securities may include, but are not limited to, dividend-paying securities, common stock, preferred stock, shares of investment companies, convertible securities, warrants and rights.

Securities selection

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

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The UBS Funds

More information about the Funds—UBS U.S. Large Cap Equity Fund

securities are sometimes less liquid and harder to sell and to value than securities of US issuers.

• Derivatives risk—Derivatives involve risks different from, and possibly greater than, the risks associated with investing directly in securities and other instruments. Derivatives require investment techniques and risk analyses different from those of other investments. If the Advisor incorrectly forecasts the value of securities, currencies, interest rates, or other economic factors in using derivatives, the Fund might have been in a better position if the Fund had not entered into the derivatives. While some strategies involving derivatives can protect against the risk of loss, the use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund to lose more than the amount the Fund invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

• Focused investment risk—The risk that investing in a select group of securities could subject the Fund to greater risk of loss and could be considerably more volatile than the Fund's primary benchmark or other mutual funds that are diversified across a greater number of securities.

Other information

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The UBS Funds

More information about the Funds—UBS U.S. Large Cap Value Equity Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to maximize total return, consisting of capital appreciation and current income.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities of US large capitalization companies. The Fund defines large capitalization companies as those with a market capitalization of at least $3 billion. If movement in the market price causes a security to change from one capitalization range to another, the Fund is not required to dispose of the security. The Fund may invest up to 20% of its net assets in companies that have market capitalizations within the range of the Russell 1000 Value Index but below $3 billion in market capitalization. Investments in equity securities may include, but are not limited to, dividend-paying securities, common stock, preferred stock, shares of investment companies, convertible securities, warrants and rights.

Securities selection

In selecting securities, the Advisor focuses on, among other things, identifying discrepancies between a security's fundamental value and its market price. In this context, the fundamental value of a given security is the Advisor's assessment of what a security is worth. The Fund will select a security whose fundamental value it estimates to be greater than its market value at any given time. For each stock under analysis, the Advisor bases its estimates of value upon economic, industry and company analysis, as well as upon a company's management team, competitive advantage and core competencies. The Advisor then compares its assessment of a security's value against the prevailing market prices with the aim of constructing a portfolio of stocks with attractive relative price/value characteristics. The Fund will generally only invest in stocks that at the time of purchase are contained in its benchmark.

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The principal risks presented by an investment in the Fund are:

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The UBS Funds

More information about the Funds—UBS U.S. Large Cap Value Equity Fund

other economic factors in using derivatives, the Fund might have been in a better position if the Fund had not entered into the derivatives. While some strategies involving derivatives can protect against the risk of loss, the use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund to lose more than the amount the Fund invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

Other information

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The UBS Funds

More information about the Funds—UBS U.S. Small Cap Growth Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to provide long-term capital appreciation.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in equity securities of US small capitalization companies. Small capitalization companies are those companies with market capitalizations of less than $3 billion. However, the Fund may invest a portion of its assets in securities outside of this range. Further, if movement in the market price causes a security to no longer meet the small capitalization range, the Fund is not required to dispose of the security. For purposes of the Fund's investments, US companies include any company organized outside of the United States but which: (a) is included in the Fund's benchmark index; (b) has its headquarters or principal location of operations in the United States; (c) whose primary listing is on a securities exchange or market in the United States; or (d) derives a majority of its revenues in the United States.

Investments in equity securities may include, but are not limited to, common stock and preferred stock. The Fund may invest up to 20% of its net assets in foreign securities.

Under certain market conditions, the Fund may invest in companies at the time of their initial public offering (IPO).

Securities selection

Principal risks

An investment in the Fund is not guaranteed; you may lose money by investing in the Fund. The other principal risks presented by an investment in the Fund are:

• Limited capitalization risk—The risk that investments in smaller companies may be more volatile

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The UBS Funds

More information about the Funds—UBS U.S. Small Cap Growth Fund

than investments in larger companies, as smaller companies generally experience higher growth and failure rates. The trading volume of smaller company securities is normally lower than that of larger companies. Such securities may be less liquid than others and could make it difficult to sell a security at a time or price desired. Changes in the demand for the securities of smaller companies generally have a disproportionate effect on their market price, tending to make prices rise more in response to buying demand and fall more in response to selling pressure.

• Derivatives risk—Derivatives involve risks different from, and possibly greater than, the risks associated with investing directly in securities and other instruments. Derivatives require investment techniques and risk analyses different from those of other investments. If the Advisor incorrectly forecasts the value of securities, currencies, interest rates, or other economic factors in using derivatives, the Fund might have been in a better position if the Fund had not entered into the derivatives. While some strategies involving derivatives can protect against the risk of loss, the use of derivatives can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments. Derivatives also involve the risk of mispricing or improper valuation, the risk that changes in the value of a derivative may not correlate perfectly with the underlying asset, rate, index, or overall securities markets, and counterparty and credit risk (the risk that the other party to a derivative will not fulfill its contractual obligations, whether because of bankruptcy or other default). Gains or losses involving some options, futures, and other derivatives may be substantial (for example, for some derivatives, it is possible for the Fund to lose more than the amount the Fund invested in the derivatives). Some derivatives tend to be more volatile than other investments, resulting in larger gains or losses in response to market changes. Derivatives are subject to a number of other risks, including liquidity risk (the possible lack of a secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close out the derivatives) and interest rate risk (some derivatives are more sensitive to interest rate changes and market price fluctuations). Finally, the Fund's use of derivatives may cause the Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.

• IPOs risk—Companies involved in IPOs generally have limited operating histories, and prospects for future profitability are uncertain. Prices of IPOs may also be unstable because of the absence of a prior public market, the small number of shares available for trading and limited investor information. IPOs will frequently be sold within 12 months of purchase. This may result in increased short-term capital gains, which will be taxable to shareholders as ordinary income.

Other information

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Managing your fund account

Flexible pricing

Each Fund offers three classes of shares–Class A, Class C and Class Y. Each Fund, except for the UBS U.S. Equity Alpha Fund, offers Class B shares to existing shareholders of Class B shares in limited circumstances as described in the section entitled "Class B shares" on page [__]. Each class has different sales charges and ongoing expenses. You can choose the class that is best for you, based on how much you plan to invest and how long you plan to hold your shares of the Fund(s). Class Y shares are only available to certain types of investors.

Class A shares

The Class A sales charges for the Funds are described in the following table:

Class A sales charges

	Sales charge as a percentage of:						Reallowance to selected dealers as
Amount of investment	Offering price			Net amount invested			percentage of offering price
Less than $50,000		5.50	%		5.82	%		5.00	%
$50,000 to $99,999		4.50			4.71			4.00
$100,000 to $249,999		3.50			3.63			3.00
$250,000 to $499,999		2.50			2.56			2.00
$500,000 to $999,999		2.00			2.04			1.75
$1,000,000 and over⁽¹⁾		None			None			May pay up to 1.00⁽²⁾

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If you intend to purchase more than $5 million of Class A shares, you should instead purchase Class Y shares, which have lower on-going expenses.

Class B shares

The Funds have ceased offering Class B shares (with exceptions for existing shareholders for exchanges or reinvesting dividends). New or additional investments into Class B shares, including investments through an automatic investment plan, are no longer permitted. Existing shareholders of Class B shares of UBS Global Equity Fund, UBS International Equity Fund, UBS U.S. Large Cap Equity Fund, UBS U.S. Large Cap Value Equity Fund and UBS U.S. Small Cap Growth Fund may: (i) continue as Class B shareholders; (ii) continue to reinvest dividends and distributions into Class B shares; and (iii) exchange their Class B shares for Class B shares of other series of the UBS Family of Funds, as permitted by existing exchange privileges. For Class B shares outstanding and Class B shares acquired upon reinvestment of dividends or distributions or through exchanges, Class B share attributes, including the associated Rule 12b-1 plan service and distribution fees, contingent deferred sales charges and conversion features, as applicable, will continue.

	Percentage (based on amount of investment) by which the shares' net asset value is multiplied:
If you sell shares within:	Less than $100,000			$100,000 to $249,999			$250,000 to $499,999			$500,000 to $999,999
1st year since purchase		5	%		3	%		3	%		2	%
2nd year since purchase		4	%		2	%		2	%		1	%
3rd year since purchase		3	%		2	%		1	%		None
4th year since purchase		2	%		1	%		None			None
5th year since purchase		2	%		None			None			None
6th year since purchase		1	%		None			None			None
7th year since purchase		None			None			None			None

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shares are sold within the fourth or fifth year since purchase; and (v) 1%, if shares are sold within the sixth year of purchase. Prior Class B Shares held longer than six years are not subject to a deferred sales charge and automatically convert to Class A shares, which have lower ongoing expenses.

To minimize your deferred sales charge, we will assume that you are selling:

• First, Class B shares representing reinvested dividends, and

• Second, Class B shares that you have owned the longest.

Class C shares

Class C shares also have a contingent deferred sales charge of 1.00%, applicable if you sell your shares within one year of the date you purchased them. We calculate the deferred sales charge on sales of Class C shares by multiplying 1.00% by the lesser of the net asset value of the Class C shares at the time of purchase or the net asset value at the time of sale.

Sales charge waivers for Class A, Class B and Class C shares

Class A front-end sales charge waivers—Front-end sales charges will be waived if you buy Class A shares with proceeds from the following sources:

1. Redemptions from any registered mutual fund for which UBS Global AM (US) or any of its affiliates serves as principal underwriter if you:

• Originally paid a front-end sales charge on the shares; and

• Reinvest the money within 60 days of the redemption date.

The Funds' front-end sales charges will also not apply to Class A purchases by or through:

2. Trust companies and bank trust departments investing on behalf of their clients if clients pay the bank or trust company an asset-based fee for trust or asset management services.

3. Retirement plans and deferred compensation plans that have assets of at least $1 million or at least 25 eligible employees.

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a fund supermarket, wrap program, or other program in which clients pay a fee for advisory services, executing transactions in Fund shares, or for otherwise participating in the program.