485BPOS 1 a13-20788_1485bpos.htm POST-EFFECTIVE AMENDMENT FILED PURSUANT TO SECURITIES ACT RULE 485(B)

As filed with the U.S. Securities and Exchange Commission on October 28, 2013

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. 111	x
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 112

(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 (Americas) Inc.

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):

x immediately upon filing pursuant to paragraph (b)

o on [Date] pursuant to paragraph (b)

o 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:

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

UBS Asset Allocation Funds

Prospectus

The UBS Funds

Prospectus

October 28, 2013

UBS Asset Growth Fund (formerly, UBS Global Frontier Fund)

Class: A: BGFAX, C: BGFCX, Y: BGFYX

UBS Dynamic Alpha Fund

Class: A: BNAAX, C: BNACX, Y: BNAYX

UBS Global Allocation Fund

Class: A: BNGLX, C: BNPCX, Y: BPGLX

UBS Multi-Asset Income Fund

Class: A: MAIAX, C: MAIDX, Y: MAIYX

This prospectus offers Class A, Class C and Class Y shares in four of the fourteen series of The UBS Funds (the "Trust") listed above (each, a "Fund" and, collectively, the "Funds").

As with all mutual funds, the U.S. Securities and Exchange Commission ("SEC") and U.S. Commodity Futures Trading Commission ("CFTC") 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 Asset Growth Fund				Page 3
UBS Dynamic Alpha Fund				Page 9
UBS Global Allocation Fund				Page 15
UBS Multi-Asset Income Fund				Page 20
More Information about the funds
UBS Asset Growth Fund—Investment objective, strategies, securities selection and risks				Page 26
UBS Dynamic Alpha Fund—Investment objective, strategies, securities selection and risks				Page 33
UBS Global Allocation Fund—Investment objective, strategies, securities selection and risks				Page 39
UBS Multi-Asset Income Fund—Investment objective, strategies, securities selection and risks				Page 44
Your investment
Information for managing your fund account
Managing your fund account				Page 51
—Flexible pricing				Page 51
—Buying shares				Page 55
—Selling shares				Page 58
—Exchanging shares				Page 59
—Pricing and valuation				Page 60
Additional information
Additional important information about the funds
Management				Page 62
Disclosure of portfolio holdings				Page 66
Dividends and taxes				Page 66
Supplemental investment advisor performance information				Page 69
Financial highlights				Page 77
Where to learn more about the funds				Back cover

Please find the UBS family of funds privacy notice on page 85 of this Prospectus.

Please find the UBS Global Asset Management business continuity planning overview on page 86 of this prospectus.

The funds are not a complete or balanced investment program.

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2

UBS Asset Growth Fund
Fund summary

Investment objective

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

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 51 of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page 113 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			None
Maximum contingent deferred sales charge (load) (CDSC) (as a % of purchase or sales price, whichever is less)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.95	%		0.95	%		0.95	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses		0.70			0.72			0.72
Acquired fund fees and expenses		0.16			0.16			0.16
Total annual fund operating expenses²		2.06			2.83			1.83
Less management fee waiver/expense reimbursements		0.50			0.52			0.52
Total annual fund operating expenses after management fee waiver/expense reimbursements^2,3		1.56			2.31			1.31

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² Due to the Fund's strategy change, the Fund has restated the "Acquired fund fees and expenses" based on the anticipated expenses of the new strategy. These "Acquired fund fees and expense" are based on estimates and may change based on actual results. The actual "Acquired fund fees and expense" for the Fund's fiscal year ended June 30, 2013 were 0.13% for Class A shares, 0.13% for Class C shares and 0.13% for Class Y shares. The actual "Total annual fund operating expenses" for the Fund's fiscal year ended June 30, 2013 were 1.53% for Class A, 2.28% for Class C and 1.28% for Class Y.

³ 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 dividend expense and security loan fees 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 dividend expense and security loan fees for securities sold short), through the period ending October 28, 2014, 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

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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 years		10 years
Class A	$	700	$	1,115	$	1,554	$	2,771
Class C (assuming sale of all shares at end of period)		334		828		1,448		3,120
Class C (assuming no sale of shares)		234		828		1,448		3,120
Class Y		133		525		942		2,105

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 49% of the average value of its portfolio.

Principal strategies
Principal investments

In order to achieve the Fund's objective, the Fund employs an asset allocation strategy that seeks to achieve a return over the long term similar to the MSCI World Free Index (net), but with more stable volatility. The Advisor does not represent or guarantee that the Fund will meet this goal. As part of the Fund's asset allocation strategy, the Fund will primarily use passive index components and derivatives, including but not limited to futures and swaps, but also may invest directly in individual securities. The Fund's passive index component will primarily utilize third-party passively managed exchanged-traded funds ("ETFs") to gain exposure to equity, fixed income, and alternative asset class securities, including, but are not limited to, convertible bonds and real estate securities, including REITs and real estate operating companies. The Fund may gain exposure to issuers located within and outside the United States.

The Fund will incorporate a managed volatility feature that seeks to control portfolio volatility to a target of 15% annually. Volatility is a risk measurement that measures the relative rate at which the price of a security moves up and down and is typically determined by calculating the annualized standard deviation of the daily change in price. Commonly, the higher the volatility the greater the risk of the security. While UBS Global AM (Americas) attempts to manage the Fund's volatility, there can be no guarantee that the Fund will achieve its target and the actual volatility may be higher or lower than 15% over any period. This strategy of attempting to manage volatility may result in the Fund outperforming the general securities market during periods of flat or negative market performance where broad market volatility is above the target level or where broad market volatility is beneath the target level but returns are positive. The strategy may underperform the general securities market during periods of positive market performance when broad market volatility exceeds the target level.

The Fund will adjust its exposure to markets in response to changes in expected volatility. The Fund may without limitation allocate assets to cash or short-term money market instruments as well as derivatives in order to reduce exposure to riskier assets during periods of increasing market risk. When volatility declines, the Fund may move assets out of cash and back into riskier assets. As part of its attempt to manage the Fund's volatility exposure, the Fund may make significant investments in index futures, options, or other derivative instruments designed to achieve both long and short exposure to asset markets. The Fund has the ability to employ a maximum exposure target of up to 175% of fund assets to the markets.

Under normal circumstances, the Fund allocates its assets between equity, fixed income, and alternative asset class securities, including securities of issuers in both developed (including the United States) and emerging markets countries. Equity investments may include securities of companies of any capitalization size. 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 may be either investment grade or high yield (lower-rated or "junk bonds") securities. Investments in equity securities may include, but are not limited to, common stock and preferred stock.

The Fund may, but is not required to, use exchange-traded or over-the-counter ("OTC") derivative instruments for risk management purposes or as part of the

UBS Global Asset Management
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Fund's investment strategies. The derivatives in which the Fund may invest include index options, futures (including, but not limited to, futures on a commodity index), forward agreements, swap agreements (including, but not limited to, interest rate, credit default, equity index, inflations swaps and total return swaps), equity participation notes and equity linked notes. All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency or to manage or adjust the risk profile of the Fund and to manage the Fund's volatility. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities. Futures on indices, forward agreements, interest rate swaps and credit default swaps may also be used to adjust the Fund's portfolio duration.

Management process

The portfolio managers will manage the Fund's portfolio using a two-step process as described below.

Step 1: Asset Allocation
The underlying tactical asset allocation strategy is determined by the portfolio managers taking account of the potential returns and risks of each asset class, the expected diversification benefits from a multi-asset approach and the portfolio managers' views of potential returns and risks over a 3-5 year time horizon. This will be a dynamic process and will result in changes to the underlying asset allocation strategy as the outlook changes.

Step 2: Managed Volatility
The exposure to the strategy defined in step 1 will then be determined and implemented targeting a portfolio volatility of 15% or lower. The Fund will seek to achieve this objective by systematically adjusting its exposure to the asset allocation strategy outlined in steps 1 and 2, with a maximum exposure of up to 175% of Fund assets to the markets.

Asset allocation decisions are primarily driven by UBS Global AM (Americas)'s assessment of valuation and prevailing market conditions in the United States and around the world. Using a systematic approach, the portfolio management team analyzes the asset classes and investments across equities, fixed income, and alternative asset classes (including currency), considering both fundamental valuation, economic and other market indicators. Regarding valuation, the portfolio managers evaluate whether asset classes and investments are attractively priced relative to fundamentals. The starting point is to assess the intrinsic value of an asset class, as determined by the fundamentals that drive an

asset class' future cash flow. The intrinsic value represents a long term anchor point to which the portfolio managers believe the asset class will eventually revert.

Fair value estimates of asset classes and markets are an output of UBS Global AM (Americas)'s proprietary valuation models. Discounting the asset's future cash flow using a discount rate that appropriately reflects the inherent investment risk associated with holding the asset gives the asset's fair value. The competitive advantage of the portfolio managers' models lies in the quality and consistency of the inputs used and, therefore, the reliability of valuation conclusions. The discrepancy between actual market level and fair value (the price/value discrepancy) is the primary valuation signal used in identifying investment opportunities.

Next, the portfolio managers assess additional market indicators and consider the effect that other determinants of economic growth and overall market volatility will have on each asset class. While in theory price/value discrepancies may resolve themselves quickly and linearly, in practice price/value discrepancy can grow larger before it resolves. While valuation models have proven effective at identifying longer-term price/value discrepancies, in the shorter term other factors can swamp valuation considerations. Thus, the Portfolio Managers incorporate an additional discipline in the idea generation process. The portfolio managers refer to this additional step in their idea generation process as market behavior analysis. Adding this step helps them understand what other market indicators might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of non-valuation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

The Advisor uses both fundamental valuation and market behavior analysis to make the two-pronged determination of risk budget and risk allocation. The portfolio managers work closely with the Risk Management team to determine the appropriate amount of risk capital to allocate to the underlying trade ideas given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to assess the effects each

UBS Global Asset Management
5

trade's inclusion will have on the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

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.

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, including ETFs ("Underlying Funds"). 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.

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.

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.

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.

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 (Standard & Poor's Financial

Services LLC ("S&P")) or Ba (Moody's Investors Service, Inc. ("Moody's")) or below, or deemed of equivalent quality, will default or otherwise be unable to honor a financial obligation (also known as lower-rated or "junk bonds"). 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.

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.

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.

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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). Derivatives relating to fixed income markets are especially susceptible to interest rate risk and credit risk. In addition, many types of swaps and other non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation com-

UBS Global Asset Management
6

plexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Leverage risk associated with financial instruments: The use of financial instruments to increase potential returns, including derivatives used for investment (non-hedging) purposes, 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.

Real estate securities and REITs risk: The risk that the Fund's performance will be affected by adverse developments in the real estate industry. Real estate values may be affected by a variety of factors, including: local, national or global economic conditions; changes in zoning or other property-related laws; environmental regulations; interest rates; tax and insurance considerations; overbuilding; property taxes and operating expenses; or declining values in a neighborhood. Similarly, a REIT's performance depends on the types, values, locations and management of the properties it owns. In addition, a REIT may be more susceptible to adverse developments affecting a single project or market segment than a more diversified investment. Loss of status as a qualified REIT under the US federal tax laws could adversely affect the value of a particular REIT or the market for REITs as a whole.

Volatility management risk: While the Fund's strategy seeks to manage the level of the Fund's volatility, there can be no guarantee that this will be achieved; actual or realized volatility for any particular period may be materially higher or lower than the manager's targeted volatility level depending on market conditions. In addition, the efforts to manage the Fund's volatility may be expected, in a period of generally positive equity market returns when broad market volatility is above the target volatility level, to reduce the Portfolio's performance below what could be achieved without seeking to manage volatility and, thus, the Portfolio would generally be expected to underperform market indices that do not seek to achieve a specified level of volatility.

Illiquidity risk: The risk that investments cannot be readily sold at the desired time or price, and the Fund may have to accept a lower price or may not be able to sell the security at all. An inability to sell securities can adversely affect the Fund's value or prevent the Fund from taking advantage of other investment opportunities.

Tracking error risk for ETFs and derivatives: Imperfect correlation between a derivative or ETF's portfolio securities and those in its index, rounding of prices, the timing of cash flows, the ETF's size, changes to the in-

dex and regulatory requirements may cause tracking error, which is the divergence of an ETF's performance from that of its underlying index. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because an ETF incurs fees and expenses while its underlying index does not.

Passive investment risk: ETFs purchased by the Fund are not actively managed and may be affected by general decline in market segments relating to their respective indices. An ETF typically invests in securities included in, or representative of, its index regardless of their investment merits and does not attempt to take defensive positions in declining markets.

Investing in ETFs risk: The Fund's investment in ETFs may subject the Fund to additional risks than if the Fund would have invested directly in the ETF's underlying securities. These risks include the possibility that an ETF may experience a lack of liquidity that can result in greater volatility than its underlying securities; an ETF may trade at a premium or discount to its net asset value; or an ETF may not replicate exactly the performance of the benchmark index it seeks to track. In addition, investing in an ETF may also be more costly than if a Fund had owned the underlying securities directly. The Fund, and indirectly, shareholders of the Fund, bear a proportionate share of the ETF's expenses, which include management and advisory fees and other expenses. In addition, the Fund will pay brokerage commissions in connection with the purchase and sale.

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

Performance

Risk/return bar chart and table

UBS Global Asset Management
7

changed. The performance below is attributable to the Fund's performance before the strategy change. 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.

Total return

Total return January 1 - September 30, 2013: 7.53%
Best quarter during calendar years shown—2Q 2009: 33.02%
Worst quarter during calendar years shown—4Q 2008: (29.77)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			Life of class
Class A (7/26/07)
Return before taxes		9.95	%		(2.83	)%		(2.46	)%

Class C (7/26/07)

Return before taxes

14.44

(2.46

)

(2.18

)

Class Y (7/26/07)

Return before taxes	16.59	(1.50	)	(1.20	)
Return after taxes on distributions	16.32	(2.43	)	(2.09	)
Return after taxes on distributions and sale of fund shares	11.15	(1.73	)	(1.44	)
MSCI World Free Index (net)	15.83	(1.18	)	(0.70	)

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.

• Richard Lloyd, portfolio manager of the Fund since 2013.

• Luke Browne, portfolio manager of the Fund since 2013.

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 generally will 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, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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.

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8

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

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.85	%		0.85	%		0.85	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses		0.33			0.34			0.27
Acquired fund fees and expenses		0.01			0.01			0.01
Total annual fund operating expenses²		1.44			2.20			1.13
Less management fee waiver/expense reimbursements		0.08			0.09			0.02
Total annual fund operating expenses after management fee waiver/expense reimbursements^2,3		1.36			2.11			1.11

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² 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.

³ 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 dividend expense and security loan fees 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 dividend expense and security loan fees for securities sold short), through the period ending October 28, 2014, do not exceed 1.35% for Class A 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in

UBS Global Asset Management
9

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 years		10 years
Class A	$	681	$	973	$	1,286	$	2,173
Class C (assuming sale of all shares at end of period)		314		680		1,171		2,527
Class C (assuming no sale of shares)		214		680		1,171		2,527
Class Y		113		357		620		1,373

Portfolio turnover

Principal strategies
Principal investments

In order to achieve the Fund's objective, the Fund employs an asset allocation strategy that seeks to achieve a total rate of return for the Fund that meets or exceeds the Citigroup One-Month US Treasury Bill Index plus 2%-4% (net of fees) over a rolling five year time horizon. The Advisor does not represent or guarantee that the Fund will meet this total return goal.

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.

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's fixed income investments may reflect a broad range of investment maturities, credit qualities and sectors, including high yield (lower-rated or "junk bonds") securities and convertible debt securities.

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 exchange-traded or over-the-counter 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 (on securities, indices, or swap agreements), futures, forward agreements, swap agreements (specifically, interest rate, total return, currency and credit default swaps), credit-linked securities, equity participation notes and equity linked notes. All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency, or to manage or adjust the risk profile of the Fund. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities. Options on indices, options on swap agreements, futures on indices, forward agreements, interest rate swaps, total return swaps, credit default swaps and credit-linked securities may also be used to adjust the Fund's portfolio duration, including to achieve a negative portfolio duration.

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.

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Management process

The portfolio managers will manage the Fund's portfolio using the following investment process as described below:

The strategy invests in the full spectrum of instruments and markets globally. The Advisor believes that the Advisor is able to improve the return outcome and risk management of the Fund by employing a well diversified strategy across a broad global opportunity set. Returns are generated from asset allocation across markets, currency and security selection. The Advisor aims to employ 15-25 of the Advisor's highest conviction trade ideas into the following diversified risk buckets:

• Market Directional: Explicit view on equities, credit, and interest rates

• Relative Value Market: Capitalizing on misvaluation between two markets

• Relative Value Currency: Active decisions between two markets that are made independent from market decisions

Next, the portfolio managers assess additional market indicators and consider the effect that other determi-

nants of economic growth and overall market volatility will have on each asset class. While in theory price/value discrepancies may resolve themselves quickly and linearly, in practice price/value discrepancy can grow larger before it resolves. While valuation models have proven effective at identifying longer-term price/value discrepancies, in the shorter term other factors can swamp valuation considerations. Thus, the portfolio managers incorporate an additional discipline in our idea generation process. The portfolio managers refer to this additional step in its idea generation process as market behavior analysis. Adding this step helps them to understand what other market indicators might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of non-valuation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

The asset allocation process is structured around the Asset Allocation & Currency (AAC) Investment Committee (the "AAC Committee") meetings, which provides a forum for debate and the exploration of all ramifications of any investment decision, rather than aiming for a consensus to be reached. Instead, any voting member of the AAC Committee can sponsor a trade idea, preparing a detailed investment thesis to support the view. An investment thesis has to define the investment rationale based on valuation and market behavioral influences, the time scale for it being realized, the transaction costs and the potential milestones the Advisor would expect to evaluate whether or not the view is correct. The sponsor is then responsible for convincing another member of the AAC Committee to support the idea as co-sponsor.

Bottom up selection across active equity and fixed income markets can be utilized as part of the asset allocation process at the asset class level. With respect to specific equity securities for inclusion in the Fund's equity asset classes, the Advisor may utilize fundamental valuation, quantitative and growth-oriented strategies. The Advisor's bottom up fixed income security selection strategy combines judgments about the absolute value of the fixed income universe and the relative value of issuer sectors, maturity intervals, security durations, credit qualities and coupon segments, as well as specific circumstances facing the issuers of fixed income securities.

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The Advisor uses both fundamental valuation and market behavior analysis to make the two-pronged determination of risk budget and risk allocation. The portfolio managers work closely with the Risk Management team, members of which attend the AAC Committee meetings, to determine the appropriate amount of risk capital to allocate to the underlying trade ideas given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to better understand the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

Main risks

High yield bond risk: The risk that the issuer of bonds with ratings of BB (Standard & Poor's Financial Services LLC ("S&P")) or Ba (Moody's Investors Service, Inc. ("Moody's")) or below, or deemed of equivalent quality, will default or otherwise be unable to honor a financial obligation (also known as lower-rated or "junk bonds"). 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.

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.

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

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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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk, and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). Derivatives relating to fixed income markets are especially susceptible to interest rate risk and credit risk. In addition, many types of swaps and other non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

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 risk: 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.

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

Performance

Risk/return bar chart and table

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 One-Month US Treasury Bill Index shows how the Fund's performance compares to public obligations of the U.S. Treasury with maturities of one month. Life of class performance for the BofA Merrill Lynch US Treasury 1-5 Year Index, the MSCI World Free Index (net) and the Citigroup One-Month US Treasury Bill Index is as of the inception month end of each class of the Fund. 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. 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.

Total return

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Total return January 1 - September 30, 2013: 1.59%
Best quarter during calendar years shown—2Q 2009: 18.12%
Worst quarter during calendar years shown—4Q 2008: (17.08)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			Life of class
Class A (1/27/05)
Return before taxes		7.74	%		1.41	%		2.39	%
Class C (1/27/05)
Return before taxes		12.16			1.80			2.34
Class Y (1/27/05)
Return before taxes		14.34			2.90			3.44
Return after taxes on distributions		13.65			1.21			2.16
Return after taxes on distributions and sale of fund shares		9.38			1.86			2.55
BofA Merrill Lynch US Treasury 1-5 Year Index		0.91			3.33			3.78
MSCI World Free Index (net)		15.83			(1.18	)		4.17
Citigroup One-Month US Treasury Bill Index		0.05			0.33			1.72

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.

• Lowell Yura, portfolio manager of the Fund since October 2013.

Purchase & sale of Fund shares

Tax information

Payments to broker/dealers and other financial intermediaries

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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

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.78	%		0.78	%		0.78	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses		0.25			0.28			0.20
Acquired fund fees and expenses		0.08			0.08			0.08
Total annual fund operating expenses²		1.36			2.14			1.06

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² 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" will differ from those presented in the Financial highlights.

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. 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	$	681	$	957	$	1,254	$	2,095
Class C (assuming sale of all shares at end of period)		317		670		1,149		2,472
Class C (assuming no sale of shares)		217		670		1,149		2,472
Class Y		108		337		585		1,294

Portfolio turnover

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15

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 54% of the average value of its portfolio.

Principal strategies
Principal investments

In order to achieve the Fund's objective, the Fund employs an asset allocation strategy that seeks to maximize total return. The Advisor does not represent or guarantee that the Fund will meet this total return goal.

The Fund invests in equity and fixed income securities of issuers located within and outside the United States. Under normal circumstances, the Fund allocates 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 or "junk bonds") 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 may, but is not required to, use exchange-traded or over-the-counter derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include index options, futures, forward agreements, swap agreements (specifically, interest rate, credit default and inflation swaps), equity participation notes and equity linked notes. All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency (except with respect to equity participation notes and equity linked notes), or to manage or adjust the risk profile of the Fund. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities. Futures on indices, forward agreements, interest rate swaps and credit default swaps may also be used to adjust the Fund's portfolio duration.

Management process

The portfolio managers will manage the Fund's portfolio using the following investment process as described below:

Fair value estimates of asset classes and markets are an output of UBS Global AM (Americas)'s proprietary valuation models. Discounting the asset's future cash flow using a discount rate that appropriately reflects the inherent investment risk associated with holding the asset gives the asset's fair value. The competitive advantage of the portfolio manager's models lies in the quality and consistency of the inputs used and, therefore, the reliability of valuation conclusions. The discrepancy between actual market level and fair value (the price/value discrepancy) is the primary valuation signal used in identifying investment opportunities.

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16

stand what other market indicators might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of non-valuation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

The Advisor uses both fundamental valuation and market behavior analysis to make the two-pronged determination of risk budget and risk allocation. The portfolio managers work closely with the Risk Management team, members of which attend the AAC Committee meetings, to determine the appropriate amount of risk capital to allocate to the underlying trade ideas given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to better under-

stand the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

Main risks

Market risk: The risk that the market value of the Fund's investments may fluctuate, sometimes rapidly or

UBS Global Asset Management
17

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.

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

Leverage risk associated with financial instruments: The use of financial instruments to increase potential returns, including derivatives used for investment

(non-hedging) purposes, 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.

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

Performance

Risk/return bar chart and table

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 (net), 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. 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. 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.

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18

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.

Total return

Total return January 1 - September 30, 2013: 6.01%
Best quarter during calendar years shown—2Q 2009: 23.56%
Worst quarter during calendar years shown—4Q 2008: (21.44)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			10 years
Class A (6/30/97)
Return before taxes		6.20	%		(1.08	)%		5.71	%
Class C (11/22/01)¹
Return before taxes		10.49			(0.72	)		5.50
Class Y (8/31/92)
Return before taxes		12.69			0.36			6.61
Return after taxes on distributions		11.98			(1.54	)		5.04
Return after taxes on distributions and sale of fund shares		8.57			(0.70	)		5.06
Russell 3000 Index		16.42			2.04			7.68
MSCI World Free Index (net)		15.83			(1.18	)		7.51
Citigroup World Government Bond Index		1.65			5.27			6.04
GSMI Mutual Fund Index		11.88			2.13			7.74

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.

• Lowell Yura, portfolio manager of the Fund since October 2013.

Purchase & sale of Fund shares

Tax information

Payments to broker/dealers and other financial intermediaries

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UBS Multi-Asset Income Fund
Fund summary

Investment objective

The Fund seeks to provide risk-managed income as its primary objective over the long term.

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 $100,000 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 51 of the Fund's prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page 113 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)		4.50	%		None			None
Maximum contingent deferred sales charge (load) (CDSC) (as a % of purchase or sales price, whichever is less)		None¹			0.75	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.59	%		0.59	%		0.59	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses		0.92			0.93			0.91
Acquired fund fees and expenses		0.34			0.34			0.34
Total annual fund operating expenses²		2.10			2.86			1.84
Less management fee waiver/expense reimbursements		0.81			0.82			0.80
Total annual fund operating expenses after management fee waiver/expense reimbursements^2,3		1.29			2.04			1.04

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

³ 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 dividend expense and security loan fees 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 dividend expense and security loan fees for securities sold short), through the period ending October 28, 2014, do not exceed 0.95% for Class A shares, 1.70% for Class C shares and 0.70% 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

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20

Example

	1 year		3 years		5 years		10 years
Class A	$	575	$	1,004	$	1,457	$	2,710
Class C (assuming sale of all shares at end of period)		282		809		1,436		3,127
Class C (assuming no sale of shares)		207		809		1,436		3,127
Class Y		106		501		921		2,093

Portfolio turnover

Principal strategies
Principal investments

In order to achieve the Fund's objective, the Fund employs an asset allocation strategy that seeks to provide risk-managed income on a monthly basis by employing an asset allocation strategy that is designed to accommodate the Fund's targeted annual payout percentage. The Fund's investment strategy is designed to return to investors a targeted annual payout of 3%-6% based on the current and historic low yield interest rate environment over the past 5 years. The Advisor does not represent or guarantee that the Fund will meet the income goal.

Under normal circumstances, the Fund seeks to provide risk-managed income on a monthly basis by employing an asset allocation strategy that is designed to accommodate the Fund's targeted annual payout percentage. The Fund will allocate its assets by investing in a combination of equities, nominal and inflation-linked fixed income securities, third-party exchange-traded funds ("ETFs"), real estate investment trusts ("REITs"), ex-

change-listed options, and other exchange-traded and over-the-counter ("OTC") derivative securities.

Under normal or neutral market conditions, the Advisor will allocate approximately 65% of the Fund's total assets to fixed income investments, 20% of the Fund's assets to equity investments of companies in developed (including the United States) or emerging markets countries and 15% of the Fund's assets to US and non-US real estate securities (including REITs). The Fund's asset allocation targets are not fixed which gives the Advisor the flexibility to meet the Fund's investment goal based on market conditions. If warranted by market conditions, the Advisor may invest 100% of the Fund's assets in fixed income investments. In addition, the Fund's allocations to US and non-US equity and real estate securities may be greater or lesser than the allocations described above based on the Advisor's assessment of the markets.

The Fund may obtain exposure to fixed income investments by investing in securities directly or by purchasing third-party ETFs that invest in fixed income securities. The Fund's fixed income investments may include debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations (including inflation-linked notes and catastrophe bonds), floating rate notes, mortgage-backed securities and asset-backed securities. Catastrophe bonds are types of insurance-linked or event-linked securities that pay off on the occurrence of specific events, usually natural disasters. The third-party ETFs in which the Fund invests could have exposure to senior bank loans. These securities may be either investment grade or high yield (lower-rated or "junk bonds") securities. The Fund may invest without limitation in investment grade debt securities, including corporate debt securities and inflation-linked securities, and may invest up to 50% of its total assets in lower-rated bonds of corporations and up to 20% of its total assets in a combination of other lower-rated bonds, including lower-rated municipal bonds and lower-rated non-US government bonds (including those of emerging markets countries). The Fund may invest in fixed income investments of any maturity.

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21

nies whose products and services are related to the real estate industry, such as building supply manufacturers, mortgage lenders, or mortgage service companies. The Fund's equity investments may include companies and REITs of any market capitalization, including small capitalization (below $3 billion). Within these limitations, the Fund may invest up to 15% of its assets in infrastructure securities and up to 20% of its assets in equity securities of emerging markets issuers.

The Fund may obtain exposure to equity, real estate or fixed income investments indirectly by investing in ETFs. An ETF is a type of exchange-traded investment company. Ordinarily, the 1940 Act and the regulations promulgated thereunder prohibit an investment company from buying more than 3% of the shares of any other single investment company, investing more than 5% of its assets in any other single investment company, or investing more than 10% of its assets in other investment companies generally. However, certain ETFs have obtained exemptive orders from the SEC permitting other investment companies, such as the Fund to acquire their securities in excess of the percentage limits of the 1940 Act. The Fund intends to rely on such exemptive orders from time to time.

The Fund may, but is not required to, use exchange-traded or OTC derivative instruments for risk management purposes or as part of the Fund's investment strategies. The Fund may invest in structured notes in order to generate income for the Fund. The Fund also may write covered call options on ETFs to generate cash flow for the purpose of meeting the Fund's target payment goal, as well as for hedging purposes. Other derivatives in which the Fund may invest include index options, futures, forward agreements and swap agreements (specifically, interest rate, currency and total return swaps). All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency, or to manage or adjust the risk profile of the Fund. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities. Futures on indices, forward agreements and interest rate swaps may also be used to adjust the Fund's portfolio duration.

In addition to other income-producing investments, the Fund may write covered call options on ETFs for the purpose of generating additional cash flow that could contribute to the overall payout of the Fund. When the Fund writes a call option on an ETF that it holds, the call option generates cash flow in the form of a premium paid by the option buyer while potentially limiting the upside of the Fund's investment in the ETF in the future.

The Fund also actively manages its currency exposure and attempts to generate positive returns and manage risk through sophisticated currency management techniques, including hedging strategies. The Advisor could employ a positive carry currency strategy whereby higher yielding currencies are bought in exchange for lower yielding currencies as a way to potentially enhance returns. These decisions are integrated with analysis of global market and economic conditions

Management process

The portfolio managers will manage the Fund's portfolio using the following investment process as described below:

The Fund seeks to provide diversification across a variety of income producing asset classes in a multi-asset framework. The Fund's asset allocation strategy is designed to accommodate the Fund's targeted annual payout while taking into account the Fund's desired level of capital appreciation. Risk diversification and dynamic distribution between the various asset classes have the objective of creating a more stable capital and income base through various market cycles and interest rate environments.

Asset allocation decisions are primarily driven by the Advisor's assessment of valuation and prevailing market conditions in the United States and around the world. Using a systematic approach, the portfolio management team analyzes the asset classes and investments across equities, fixed income, and alternative asset classes (including currency), considering both fundamental valuation, economic and other market indicators. Regarding valuation, the portfolio managers evaluate whether asset classes and investments are attractively priced relative to fundamentals. The starting point is to assess the intrinsic value of an asset class, as determined by the fundamentals that drive an asset class' future cash flow. The intrinsic value represents a long term anchor point to which the portfolio managers believe the asset class will eventually revert.

Fair value estimates of asset classes and markets are an output of the Advisor's proprietary valuation models. Discounting the asset's future cash flow using a discount rate that appropriately reflects the inherent investment risk associated with holding the asset gives the asset's fair value. The competitive advantage of the portfolio managers' models lies in the quality and consistency of the inputs used and, therefore, the reliability of valuation conclusions. The discrepancy between actual market level and fair value (the price/value discrepancy) is the primary valuation signal used in identifying investment opportunities.

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Next, the portfolio managers assess additional market indicators and consider the effect that other determinants of economic growth and overall market volatility will have on each asset class. While in theory price/value discrepancies may resolve themselves quickly and linearly, in practice price/value discrepancy can grow larger before it resolves. While valuation models have proven effective at identifying longer-term price/value discrepancies, in the shorter term other factors can swamp valuation considerations. Thus, the portfolio managers incorporate an additional discipline in their idea generation process. The portfolio managers refer to this additional step in its idea generation process as market behavior analysis. Adding this step helps them to understand what other market indicators might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of non-valuation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

Bottom up selection across active equity and fixed income markets can be utilized as part of the asset allocation process at the asset class level. With respect to specific equity securities for inclusion in the Fund's equity asset classes, the Advisor may utilize fundamental Valuation, quantitative and growth-oriented strategies. The Advisor's bottom up fixed income security selection strategy combines judgments about the absolute value of the fixed income universe and the relative value of issuer sectors, maturity intervals, security durations, credit

qualities and coupon segments, as well as specific circumstances facing the issuers of fixed income securities.

The Advisor uses both fundamental valuation and market behavior analysis to make the two-pronged determination of risk budget and risk allocation. The portfolio managers work closely with the Risk Management team, members of which attend the AAC Committee meetings, to determine the appropriate amount of risk capital to allocate to the underlying trade ideas given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to better understand the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

Main risks

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

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Distribution of income risk: The Fund's monthly income payments will be made from the Fund's interest income, dividends, and currency allocations and will reduce the amount of assets available for investment by the Fund. The Fund's investment losses may reduce the amount of future distributions an investor will receive from the Fund thereby reducing the distribution yield. The dollar amount of the Fund's monthly income payments could vary substantially from one year to the next and over time depending on several factors, including the performance of the financial markets in which the Fund invests, the allocation of Fund assets across different asset classes and investments, the performance of the Fund's underlying strategies, and the amount and timing of prior distributions by the Fund. It is also possible for payments to go down substantially or significantly fluctuate from one year to the next, month over month, and over time depending on the timing of an investor's investments in the Fund. Any redemptions will proportionately reduce the amount of future cash income payments to be received from the Fund. There is no guarantee that the Fund will make monthly income payments to its shareholders or, if made, that the Fund's monthly income payments to shareholders will remain at a fixed amount.

Government securities risk: There are different types of US government securities with different levels of credit risk, including the 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.

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

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more rapidly than other investments. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). Derivatives relating to fixed income markets are especially susceptible to interest rate risk and credit risk. In addition, many types of swaps and other non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

Performance

There is no performance information quoted for the Fund as the Fund had not completed a full calendar year of operations as of the date of this prospectus.

Investment advisor

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

Portfolio managers

• Iain Barnes, portfolio manager of the Fund since inception.

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

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

• Lowell Yura, portfolio manager of the Fund since inception.

Purchase & sale of Fund shares

Tax information

Payments to broker/dealers and other financial intermediaries

UBS Global Asset Management
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The UBS Funds

More information about the funds—UBS Asset Growth 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 seeks to achieve a return over the long term similar to the MSCI World Free Index (net), but with more stable volatility. Because the Fund's asset allocation strategy may employ leverage and focuses on a well-diversified portfolio, including stocks, bonds, alternative asset classes, and money market instruments, its asset class, country, currency, sector and market capitalization exposures will typically vary significantly from the index and may cause significant performance deviations relative to the index over shorter time periods.

As part of the Fund's asset allocation strategy, the Fund will primarily use passive index components and derivatives, including but not limited to futures and swaps, but also may invest directly in individual securities. The Fund's passive index component will primarily utilize third-party passively managed ETFs to gain exposure to equity, fixed income, and alternative asset class securities, including, but are not limited to, convertible bonds, and real estate securities, including REITs and real estate operating companies. The Fund may gain exposure to issuers located within and outside the United States.

An ETF is a type of exchange-traded investment company. Ordinarily, the 1940 Act and the regulations promulgated thereunder prohibit an investment company from buying more than 3% of the shares of any other single investment company, investing more than 5% of its assets in any other single investment company, or investing more than 10% of its assets in other investment companies generally. However, certain ETFs have obtained exemptive orders from the SEC permitting other investment companies, such as the Fund, to acquire their securities in excess of the percentage limits of the 1940 Act. The Fund intends to rely on such exemptive orders from time to time.

rity moves up and down and is typically determined by calculating the annualized standard deviation of the daily change in price. Commonly, the higher the volatility the greater the risk of the security. While UBS Global AM attempts to manage the Fund's volatility, there can be no guarantee that the Fund will achieve its target and the actual volatility may be higher or lower than 15% over any period. This strategy of attempting to manage volatility may result in the Fund outperforming the general securities market during periods of flat or negative market performance where broad market volatility is above the target level or where broad market volatility is beneath the target level but returns are positive. The strategy may underperform the general securities market during periods of positive market performance when broad market volatility exceeds the target level.

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The UBS Funds

More information about the funds—UBS Asset Growth Fund

but are not limited to, common stock and preferred stock. The Fund also may invest in other open-end investment companies advised by the Advisor to gain exposure to certain asset classes.

The Fund may, but is not required to, use exchange-traded or OTC derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include index options, futures (including, but not limited to, futures on a commodity index), forward agreements, swap agreements (including, but not limited to, interest rate, credit default, equity index, inflations swaps and total return swaps), equity participation notes and equity linked notes. All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency or to manage or adjust the risk profile of the Fund and to manage the Fund's volatility. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities. Futures on indices, forward agreements, interest rate swaps and credit default swaps may also be used to adjust the Fund's portfolio duration. The Fund may invest in derivatives to the extent permitted by the 1940 Act.

The Fund may lend its portfolio securities to generate additional income.

Securities Selection

UBS Global AM focuses on active asset allocation and volatility management to achieve the Fund's investment objective rather than active security selection. The Fund will primarily use passively managed ETFs and derivatives to achieve exposure to the various asset classes. The portfolio managers will manage the Fund's portfolio using a two-step process as described below.

Step 2: Managed Volatility
The exposure to the strategy defined in step 1 will then be determined and implemented targeting a portfolio volatility of 15% or lower.

The Fund will seek to achieve this objective by systematically adjusting its exposure to the asset allocation strategy outlined in steps 1 and 2, with a maximum exposure of up to 175% of Fund assets to the markets.

Asset allocation decisions are primarily driven by UBS Global AM's assessment of valuation and prevailing market conditions in the United States and around the world. Using a systematic approach, the portfolio management team analyzes the asset classes and investments across equities, fixed income, and alternative asset classes, considering both fundamental valuation, economic and other market indicators. Regarding valuation, the portfolio managers evaluate whether asset classes and investments are attractively priced relative to fundamentals. The starting point is to assess the intrinsic value of an asset class, as determined by the fundamentals that drive an asset class future cash flow. The intrinsic value represents an anchor point to which the portfolio managers believe the value of the asset class will eventually revert.

Fair value estimates of asset classes and markets are an output of UBS Global AM's proprietary valuation models. Discounting the asset's future cash flow using a discount rate that appropriately reflects the inherent investment risk associated with holding the asset gives the asset's fair value. The competitive advantage of the portfolio managers' models lies in the quality and consistency of the inputs used and, therefore, the reliability of valuation conclusions. The discrepancy between actual market level and fair value (the price/value discrepancy) is the primary valuation signal used in identifying investment opportunities.

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The UBS Funds

More information about the funds—UBS Asset Growth Fund

Next, the portfolio managers assess additional market indicators and consider the effect that monetary policy and other determinants of economic growth and market volatility will have on each asset classes and investment. While it would be convenient if all price/value discrepancies resolved themselves quickly and directly, quite frequently a price/value discrepancy can grow larger before it resolves. UBS Global AM's valuation models are designed to effectively identify longer-term price/value discrepancies, in the shorter term other factors can be more influential on markets than valuation considerations. Thus, UBS Global AM incorporates an additional discipline in setting the Fund's strategy. UBS Global AM engages in market behavioral analysis, which focuses on helping the portfolio manages to understand what other market indicators might drive the market towards or away from fundamental value. UBS Global AM performs systematic analysis of non-valuation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle (regime analysis), as well as an assessment of the macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

The portfolio managers work closely with a risk management team to determine the appropriate amount of risk capital to allocate to each trade given the Fund's risk budget and objectives, prevailing investment opportunities, and other Fund exposures. To assist in this process the risk management team performs scenario and correlation analysis across the various trades to assess the effects each trade's inclusion will have on the risk and diversification of the overall Fund, and ensures that unintended factor exposures are identified, managed and monitored. Risk factor management is integrated into portfolio construction at each level.

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.

• 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.

• 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 Asset Growth Fund

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.

• Credit and high yield bond 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 (also known as lower-rated or "junk bonds"). 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.

• 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 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. In addition, 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 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

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The UBS Funds

More information about the funds—UBS Asset Growth Fund

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.

• Volatility management risk—While the Fund's strategy seeks to manage the level of the Fund's volatility, there can be no guarantee that this will be achieved; actual or realized volatility for any particular period may be materially higher or lower than the manager's targeted volatility level depending on market conditions. In addition, the efforts to manage the Fund's volatility may be expected, in a period of generally positive equity market returns when broad market volatility is above the target volatility level, to reduce the Portfolio's performance below what could be achieved without seeking to manage volatility and, thus, the Portfolio would generally be expected to underperform market indices that do not seek to achieve a specified level of volatility.

operating expenses; or declining values in a neighborhood. Similarly, a REIT's performance depends on the types, values, locations and management of the properties it owns. In addition, a REIT may be more susceptible to adverse developments affecting a single project or market segment than a more diversified investment. Loss of status as a qualified REIT under the US federal tax laws could adversely affect the value of a particular REIT or the market for REITs as a whole.

• Convertible bond risk—Convertible bonds are subject to the risks of equity securities when the underlying stock price is high relative to the conversion price (because more of the security's value resides in the conversion feature) and debt instruments when the underlying stock price is low relative to the conversion price (because the conversion feature is less valuable). A convertible bond is not as sensitive to interest rate changes as a similar non-convertible debt instrument, and generally has less potential for gain or loss than the underlying equity security. The prices of equity securities fluctuate from time to time based on changes in the company's financial condition or overall market and economic conditions.

• Mortgage- and asset-backed securities risk—The Fund may invest in mortgage- and asset-backed securities that are subject to prepayment or call risk, which is the risk that the borrower's payments may be received earlier or later than expected due to changes in prepayment rates on underlying loans. Faster prepayments often happen when interest rates are falling. As a result, the Fund may reinvest these early payments at lower interest rates, thereby reducing the Fund's income. Conversely, when interest rates rise, prepayments may happen more slowly, causing the security to lengthen in duration. Longer duration securities tend to be more volatile. Securities may be prepaid at a price less than the original purchase value. An unexpectedly high rate of defaults on the mortgages held by a mortgage pool may adversely affect the value of mortgage-backed securities and could result in losses to the Fund.

• Illiquidity risk—Illiquidity risk exists when particular investments are difficult to purchase or sell. The Fund's or an underlying Fund's investments in illiquid securities may reduce the returns of the Fund or the Underlying Fund because it may be difficult to sell the illiquid securities at an advantageous time or price. To

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The UBS Funds

More information about the funds—UBS Asset Growth Fund

the extent that the Fund's or an Underlying Fund's principal investment strategies involve derivatives or securities with substantial market and/or credit risk, the Fund or the Underlying Fund will tend to have the greatest exposure to liquidity risk. Liquid investments may become illiquid after purchase by the Fund or an Underlying Fund, particularly during periods of market turmoil. Illiquid investments may be harder to value, especially in changing markets, and if the Fund or the Underlying Fund is forced to sell these investments to meet redemption requests or for other cash needs, the Fund or the Underlying Fund may suffer a loss. In addition, when there is illiquidity in the market for certain securities, the Fund or an Underlying Fund, due to limitations on illiquid investments, may be subject to purchase and sale restrictions.

• Tracking error risk for ETFs and derivatives—Imperfect correlation between a derivative or ETF's portfolio securities and those in its index, rounding of prices, the timing of cash flows, the ETF's size, changes to the index and regulatory requirements may cause tracking error, which is the divergence of an ETF's performance from that of its underlying index. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because an ETF incurs fees and expenses while its underlying index does not.

• Passive investment risk—ETFs purchased by the Fund are not actively managed and may be affected by general decline in market segments relating to their respective indices. An ETF typically invests in securities included in, or representative of, its index regardless of their investment merits and does not attempt to take defensive positions in declining markets.

• Investing in ETFs risk—The Fund's investment in ETFs may subject the Fund to additional risks than if the Fund would have invested directly in the ETF's underlying securities. While the risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, lack of liquidity in an ETF can result in its value being more volatile than the underlying portfolio securities. In addition, shares of ETFs typically trade on securities exchanges, which may subject the Fund to the risk that an ETF in which the Fund invests may trade at a premium or discount to its net asset value. Also, an

ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting or number of instruments held by the ETF. Investing in an ETF may also be more costly than if a Fund had owned the underlying securities directly. The Fund, and indirectly, shareholders of the Fund, bear a proportionate share of the ETF's expenses, which include management and advisory fees and other expenses. In addition, the Fund will pay brokerage commissions in connection with the purchase and sale of shares of ETFs.

• Securities lending risk—Securities lending involves the lending of portfolio securities owned by the Fund to qualified broker-dealers and financial institutions who provide collateral to the Fund in connection with these loans. Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Fund may lose money and there may be a delay in recovering the loaned securities. The Fund also could lose money if it does not recover the securities and/or the value of the collateral falls, including the value of investments made with cash collateral.

Other information

Regulation under the Commodity Exchange Act—The investment advisor is registered as a "commodity pool operator" ("CPO") under the Commodity Exchange Act ("CEA") and the rules of the CFTC and is subject to CFTC regulation with respect to the Fund. The CFTC has recently adopted rules regarding the disclosure, reporting and recordkeeping requirements that

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The UBS Funds

More information about the funds—UBS Asset Growth Fund

will apply with respect to the Fund as a result of the investment advisor's registration as a commodity pool operator. Generally, these rules allow for substituted compliance with CFTC disclosure and shareholder reporting requirements, based on the investment advisor's compliance with comparable SEC requirements. This means that for most of the CFTC's disclosure and shareholder reporting requirements applicable to the investment advisor as the Fund's CPO, the investment advisor's compliance with SEC disclosure and shareholder reporting requirements will be deemed to fulfill the investment advisor's CFTC compliance obligations. However, as a result of CFTC regulation with respect to the Fund, the Fund may incur additional compliance and other expenses. The investment advisor is also registered as a CTA but, with respect to the Fund, relies on an exemption from CTA regulation available for a CTA that also serves as the Fund's CPO. The CFTC has neither reviewed nor approved the Fund, its investment strategies, or this prospectus.

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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 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 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's fixed income investments may reflect a broad range of investment maturities, qualities and sectors, including high yield (lower-rated or "junk bonds") securities and convertible debt securities.

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 (on securities, indices, or swap agreements), 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 1940 Act. In addition, the Fund may establish net short or net long positions for individual markets, currencies and securities. Certain derivatives may be used to adjust the Fund's portfolio duration.

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 the Citigroup One-Month US Treasury Bill Index plus 2%-4% (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 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 SEC's asset coverage requirements for all such borrowings.

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). Asset allocation decisions are tactical, based upon the Advisor's assessment of valuations prevailing market conditions in the United States and abroad. In determining the asset allocation of the Fund, the Advisor may utilize fundamental valuation and market behavior indicators to construct the Fund's portfolio.

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The UBS Funds

More information about the funds—UBS Dynamic Alpha Fund

Top down selection

The Fund invests in the full spectrum of instruments and markets globally. The Advisor believes that it is able to improve the return outcome and risk management of the Fund by employing a well diversified strategy across a broad global opportunity set. Returns are generated from asset allocation across markets, currency and security selection. The Advisor aims to employ 15-25 of the Advisor's highest conviction trade ideas into the following diversified risk buckets:

• Market Directional: Explicit view on equities, credit, and interest rates

• Relative Value Market: Capitalizing on misvaluation between two markets

• Relative Value Currency: Active decisions between two markets that are made independent from market decisions

discrepancy) is the primary valuation signal used in identifying investment opportunities.

Next, the portfolio managers assess additional market indicators and consider the effect that other determinants of economic growth and overall market volatility will have on each asset class. While in theory price/value discrepancies may resolve themselves quickly and linearly, in practice price/value discrepancy can grow larger before it resolves. While valuation models have proven effective at identifying longer-term price/value discrepancies, in the shorter term other factors can swamp valuation considerations. Thus, the portfolio managers incorporate an additional discipline in our idea generation process. The portfolio managers refer to this additional step in its idea generation process as market behavior analysis. Adding this step helps them to understand what other market indicators might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of nonvaluation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

Bottom up security selection

With respect to the Advisor's selection of specific equity securities for inclusion in the Fund's equity asset classes, the Advisor may utilize fundamental valuation, quantitative and growth-oriented strategies.

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sessment 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 its assessed fundamental value would be considered 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.

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.

ing 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.

The Advisor uses both fundamental valuation and market behavior analysis to make the two-pronged determination of risk budget and risk allocation. The portfolio managers work closely with the Risk Management team, members of which attend the AAC Committee meetings, to determine the appropriate amount of risk capital to allocate to the underlying trade ideas given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to better understand the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

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.

The Fund may lend its portfolio securities to generate additional income.

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

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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.

• 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.

• 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 se-

curities; 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.

• IPOs risk—Companies involved in initial 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. In addition, 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

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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.

• 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 risk—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.

• Management risk—The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results. The Advisor may be incorrect in its assessment of the value of securities or assessment of market or interest rate trends, which can result in losses to the Fund. Also, in some cases, derivatives or other investments may be unavailable or the Advisor may choose not to use them under market conditions when their use, in hindsight, may be determined to have been beneficial to the Fund. In addition, 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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with these loans. Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Fund may lose money and there may be a delay in recovering the loaned securities. The Fund also could lose money if it does not recover the securities and/or the value of the collateral falls, including the value of investments made with cash collateral.

Other information

Generally, these rules allow for substituted compliance with CFTC disclosure and shareholder reporting requirements, based on the investment advisor's compliance with comparable SEC requirements. This means that for most of the CFTC's disclosure and shareholder reporting requirements applicable to the investment advisor as the Fund's CPO, the investment advisor's compliance with SEC disclosure and shareholder reporting requirements will be deemed to fulfill the investment advisor's CFTC compliance obligations. However, as a result of CFTC regulation with respect to the Fund, the Fund may incur additional compliance and other expenses. The investment advisor is also registered as a CTA but, with respect to the Fund, relies on an exemption from CTA regulation available for a CTA that also serves as the Fund's CPO. The CFTC has neither reviewed nor approved the Fund, its investment strategies, or this prospectus.

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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 or "junk bonds") 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. As of June 30, 2013, the Fund was invested in securities of issuers from 38 countries either directly or through its investments in other investment companies, and approximately 52% of its assets were invested in US markets. Under normal market conditions, the Fund invests 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 or-

ganized or having their principal place of business outside the United States or doing a substantial amount of business outside the United States.

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, credit default and inflation 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, to obtain exposure to certain markets, or to establish net short positions for individual markets, currencies or securities.

Securities selection

Top down selection

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class, as determined by the fundamentals that drive an asset class' future cash flow. The intrinsic value represents a long term anchor point to which the portfolio managers believe the asset class will eventually revert.

Next, the portfolio managers assess additional market indicators and consider the effect that other determinants of economic growth and overall market volatility will have on each asset class. While in theory price/value discrepancies may resolve themselves quickly and linearly, in practice price/value discrepancy can grow larger before it resolves. While valuation models have proven effective at identifying longer-term price/value discrepancies, in the shorter term other factors can swamp valuation considerations. Thus, the portfolio managers incorporate an additional discipline in our idea generation process. The portfolio managers refer to this additional step in its idea generation process as market behavior analysis. Adding this step helps them to understand what other market indicators might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of nonvaluation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

Bottom up security selection

In selecting equity securities for the Fund using the fundamental valuation process, the Advisor selects securities whose fundamental values it believes are greater than what is reflected in 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 its assessed fundamental value would be considered for inclusion in the Fund's portfolio. This comparison between price and intrinsic or fundamental value allows comparisons across industries and countries.

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The UBS Funds

More information about the funds—UBS Global Allocation Fund

view 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 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, security durations, credit qualities and coupon segments, as well as 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.

The Advisor uses both fundamental valuation and market behavior analysis to make the two-pronged determination of risk budget and risk allocation. The portfolio managers work closely with the Risk Management team, members of which attend the AAC Committee meetings, to determine the appropriate amount of risk capital to allocate to the underlying trade ideas given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to better understand the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

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.

The Fund may lend its portfolio securities to generate additional income.

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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More information about the funds—UBS Global Allocation Fund

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.

• 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.

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More information about the funds—UBS Global Allocation Fund

• 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

Exclusion of investment advisor from commodity pool operator definition—With respect to the Fund, the Fund's investment advisor has claimed an exclusion from the definition of CPO under the CEA and the rules of the CFTC and, therefore, is not subject to CFTC registration or regulation as a CPO. In addition, the investment advisor is relying upon a related exclusion from the definition of CTA under the CEA and the rules of the CFTC.

The terms of the CPO exclusion require the Fund, among other things, to adhere to certain limits on its investments in "commodity interests." Commodity interests include commodity futures, commodity options and swaps, which in turn include non-deliverable forward currency agreements, as further described in the Fund's SAI. Because the investment advisor and the Fund intend to comply with the terms of the CPO exclusion at this time, the Fund will limit its investments in these types of instruments. The Fund is not intended as a vehicle for trading in the commodity futures, commodity options or swaps markets. The CFTC has neither reviewed nor approved the investment advisor's reliance on these exclusions, or the Fund, its investment strategies or this prospectus.

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More information about the funds—UBS Multi-Asset Income Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to provide risk-managed income as its primary objective over the long term.

Principal investment strategies

Under normal circumstances, the Fund seeks to provide risk-managed income on a monthly basis by employing an asset allocation strategy that is designed to accommodate the Fund's targeted annual payout percentage. The Fund will allocate its assets by investing in a combination of equities, nominal and inflation-linked fixed income securities, third-party ETFs, REITs, exchange-listed options, and other exchange-traded and OTC derivative securities.

The Fund may obtain exposure to fixed income investments by investing in securities directly or by purchasing third-party ETFs that invest in fixed income securities. The Fund's fixed income investments may include debt securities of governments throughout the world (including the United States), their agencies and instrumentalities, debt securities of corporations (including inflation-linked notes and catastrophe bonds), floating rate notes, mortgage-backed securities and asset-backed securities. Catastrophe bonds are types of insurance-linked or event-linked securities that pay off on the occurrence of specific events, usually natural disasters. The third-party ETFs in which the Fund invests could have exposure to senior bank loans. These securities may be either investment grade or high yield (lower-rated) securities. The Fund may invest without limitation in investment grade debt securities, including corporate debt securities and inflation-linked securities, and may invest up to 50% of its total assets in lower-rated bonds of corporations and up to 20% of its total assets in a combination of other lower-rated bonds, including lower-rated municipal bonds and lower-rated non-US government bonds (including those of emerging markets countries). Lower-rated bonds are bonds rated in the lower rating categories of and S&P, including securities rated Ba or lower by Moody's or BB or lower by S&P. Securities rated in these categories are considered to be of poorer quality and predominantly speculative. Bonds in these categories may also be called "high yield bonds" or "junk bonds." The Fund may invest in fixed income investments of any maturity.

The Fund may obtain exposure to equity investments by investing in securities directly or by purchasing third-party ETFs that invest in equity securities. The Fund may invest up to 50% of its total assets either directly or through investment in ETFs in the common stock and preferred stock of companies in developed countries (including the United States). In addition, the Fund may invest up to 25% of its total assets in real estate securities of US and non-US issuers. Real estate securities may include interests in REITs that own properties or make construction or mortgage loans, securities of companies with substantial real estate holdings and other companies whose products and services are related to the real estate industry, such as building supply manufacturers, mortgage lenders, or mortgage service companies. The Fund's equity investments may include companies and REITs of any market capitalization, including small capitalization (below $3 billion). Within these limitations, the Fund may invest up to 15% of its assets in infrastructure securities and up to 20% of its assets in equity securities of emerging markets issuers.

The Fund may, but is not required to, use derivative instruments for risk management purposes or as part of the Fund's investment strategy. 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, total return rates, currencies or currency exchange rates, and related indexes. The Fund may, but is not required to, use exchange-traded or OTC derivative instruments for risk management purposes or as part of the Fund's investment strategies. The Fund may invest in structured notes in order to generate income for the Fund. A structured note is a derivative debt instrument that has one or more special features designed to alter the risk return profile relative to an underlying securities index, foreign exchange index or a benchmark interest rate. The Fund also may write covered call options on ETFs to generate cash flow for the purpose of meeting the Fund's target payment goal, as well as for hedging purposes. Other derivatives in which the Fund may invest include index options, futures, forward agreements and swap agreements (specifically, interest rate, currency and total return swaps). All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency), or to manage or

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adjust the risk profile of the Fund. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities. Futures on indices, forward agreements and interest rate swaps may also be used to adjust the Fund's portfolio duration. The Fund may invest in derivatives to the extent permitted by the 1940 Act.

Although not guaranteed by the Fund, the Fund's investment strategy is designed to return to investors a targeted annual payout of 3%-6% based on the current and historic low yield interest rate environment over the past 5 years. By investing in a diversified set of income generating asset classes the Fund seeks to accommodate the Fund's targeted annual payout percentage while managing both capital volatility and yield volatility. The annual payout could be higher or lower than the targeted annual payout based on the interest rate environment and other market factors occurring during that year. The Fund's targeted annual payout will be comprised of both ordinary income and capital gains to meet the payout objective and is intended to closely approximate the total taxable income of the Fund each year. Although it cannot be guaranteed by the Fund, the Fund does not expect to make distributions that will be treated as a return of capital. It is important to note that, while not intended, return of capital distributions can occur for a number of reasons.

Although the Fund intends to make monthly income distributions to shareholders, there is no guarantee that the Fund will be able to make such payments or, if made, that the Fund's monthly income payments to shareholders will remain at a fixed amount.

Securities selection

income base through various market cycles and interest rate environments.

Top down selection

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might drive the market towards or away from fundamental value. The portfolio managers perform systematic analysis of nonvaluation drivers using models measuring sentiment, momentum and flows, market stress, the stage of the economic cycle, as well as an assessment of the general macroeconomic landscape. Evaluating various market indicators become increasingly important when an asset class is trading close to its fair value. Conversely, valuation considerations tend to dominate when an asset class is substantially above or below fair value, but the Advisor recognizes that the use of market behavior analysis during these periods is very important to helping improve the timing in and out of these asset classes with very stretched valuations.

Bottom up security selection

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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More information about the funds—UBS Multi-Asset Income Fund

given the strategy's risk budget and objectives, prevailing investment opportunities, and other strategy exposures. To assist in this process the Risk Management team performs scenario and correlation analysis to better understand the risk and diversification of the overall strategy, and ensures that unintended factor exposures are identified, managed and monitored.

The Fund may lend its portfolio securities to generate additional income.

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 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.

• Distribution of income risk—The Fund's monthly income payments will be made from the Fund's interest income, dividends, and currency allocations and will reduce the amount of assets available for investment by the Fund. The Fund's investment losses may reduce the amount of future distributions an investor will receive from the Fund thereby reducing the distribution yield. The dollar amount of the Fund's monthly income payments could vary substantially from one year to the next and over time depending on several factors, including the performance of the financial markets in which the Fund invests, the allocation of Fund assets across different asset classes and investments, the performance of the Fund's underlying UBS strategies, and the amount and timing of prior distributions by the Fund. It is also possible for payments to go down substantially or significantly fluctuate from one year to the next, month over month, and over time depending on the timing of an investor's investments in the Fund. Any redemptions will proportionately reduce the amount of future cash income payments to be received from the Fund. There is no guarantee that the Fund will make

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monthly income payments to its shareholders or, if made, that the Fund's monthly income payments to shareholders will remain at a fixed amount.

• Investing in ETFs risk—The Fund's investment in ETFs may subject the Fund to additional risks than if the Fund would have invested directly in the ETF's underlying securities. While the risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, lack of liquidity in an ETF can result in its value being more volatile than the underlying portfolio securities. In addition, shares of ETFs typically trade on securities exchanges, which may subject the Fund to the risk that an ETF in which the Fund invests may trade at a premium or discount to its net asset value. Also, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting or number of instruments held by the ETF. Investing in an ETF may also be more costly than if a Fund had owned the underlying securities directly. The Fund, and indirectly, shareholders of the Fund, bear a proportionate share of the ETF's expenses, which include management and advisory fees and other expenses. In addition, the Fund will pay brokerage commissions in connection with the purchase and sale of shares of ETFs.

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.

• 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.

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The UBS Funds

More information about the funds—UBS Multi-Asset Income Fund

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.

• Covered call risk—A covered call is a financial market transaction in which the seller of call options owns the corresponding amount of the underlying instrument such as shares of an ETF or other securities. If the Fund buys the underlying instrument at the same time it sells the call, the strategy is often called a "buy-write" strategy. The long position in the underlying instrument is said to provide the "cover" as the shares can be delivered to the buyer of the call if he decides to exercise. Writing a call generates cash flow in the form of the premium paid by the option buyer. And if the stock price remains stable or increases, then the writer will be able to keep this cash flow as a profit, even though the profit may have been higher if no call were written. The risk of stock ownership is not eliminated. If the stock price declines, then the net position will likely lose money. If the stock rises beyond the strike price of the option the owner of the stock will be called out of the underlying ETF or security position and the Fund would not participate in the full upside of the market move as it would have if the buy-write program was not implemented and the Fund held long only exposure to the stock.

• 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.

• Real estate securities and REITs risk—The risk that the Fund's performance will be affected by adverse developments in the real estate industry. Real estate values may be affected by a variety of factors, including: local, national or global economic conditions; changes in zoning or other property-related laws; environmental regulations; interest rates; tax and insurance considerations; overbuilding; property taxes and operating expenses; or declining values in a neighborhood. Similarly, a REIT's performance depends on the types, values, locations and management of the properties it owns. In addition, a REIT may be more susceptible to adverse developments affecting a single project or market segment than a more diversified investment. Loss of status as a qualified REIT under the US federal tax laws could adversely affect the value of a particular REIT or the market for REITs as a whole.

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More information about the funds—UBS Multi-Asset Income Fund

value of the collateral falls, including the value of investments made with cash collateral.

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 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 and Class C shares of the Funds under Rule 12b-1 that allow the Funds to pay service and (for Class C shares) distribution fees for the sale of the Funds' shares and services provided to shareholders. Because the 12b-1 distribution fees for 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 and Class C shares. See "Sales charge waivers for Class A 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 (12b-1) fee of 0.25% of average net assets on an ongoing basis. Class A shares pay no distribution fees. The ongoing expenses for Class A shares are lower than for Class C shares.

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

Class A sales charges. UBS Asset Growth Fund, UBS Dynamic Alpha Fund and UBS Global Allocation Fund:

	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 over¹		None			None			May pay up to 1.00²

Class A sales charges. UBS Multi-Asset Income Fund:

	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 $100,000		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 over¹		None			None			May pay up to 1.00²

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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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 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% (0.75% for the UBS Multi-Asset Income Fund) 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% (0.75% for the UBS Multi-Asset Income Fund) 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 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 Asset Management (US) Inc. ("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 ("UBS") 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.

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").

10. Broker-dealers or other financial institutions that have entered into an agreement with UBS Global AM (US), on behalf of clients participating in certain self-directed investment brokerage accounts, in which clients may or may not pay a transaction fee to the broker-dealer or financial institution.

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Class A 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;

• Redemptions of shares purchased through certain retirement plans; and

• Broker-dealers or other financial institutions that have entered into an agreement with UBS Global AM (US), on behalf of clients participating in certain self-directed investment brokerage accounts, in which clients may or may not pay a transaction fee to the broker-dealer or financial institution.

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 C, Class P and/or Class Y shares of Family Funds ("Family Funds" include other UBS Funds, PACE Select funds and other funds for which UBS Global AM (US) serves as principal underwriter)¹ 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 C, Class P and/or Class Y shares, as well as those Class A, 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 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 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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of Intent. A Letter of Intent may include purchases of Class A, 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 and Class C shares

Additional information concerning sales charge reductions and waivers is available in the Funds' 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/us/en/asset_management/
individual_investors/mutual_fund.html.

Class Y shares

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

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;

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• 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.

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

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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.;

• 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 for the UBS Asset Growth Fund, UBS Dynamic Alpha Fund and UBS Global Allocation Fund that are held in a UBS Financial Services Inc. account at month-end; and

• a monthly retention fee at the annual rate of 0.075% of the value of shares of the UBS Multi-Asset Income 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 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

• 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

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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 invest-

ments 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 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.

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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, 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.

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.

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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 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.

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., 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;

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• 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.

Unless you specifically elect otherwise, you will receive telephone privileges when you open your account, allowing you to obtain your account information, and conduct a number of transactions by phone, including: buy, sell, or exchange shares of the Funds; use electronic funds transfer or wire to buy or sell shares of the Funds; change your address; and add or change account services by calling 1-800-647 1568.

Contact us immediately if you believe someone has obtained unauthorized access to your account. Certain methods of contacting us (such as by phone) may be unavailable or delayed during periods of unusual market activity. If you have telephone privileges on your account and want to discontinue them, please contact us for instructions. You may reinstate these privileges at any time in writing.

Note that telephone privileges may not be available to all Family Funds. The Funds may modify, suspend or terminate telephone privileges at any time. For more information, you should contact your investment professional or call 1-800-647 1568.

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 Funds' 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 Funds' 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 Funds' transfer agent. If you transfer your shares to the Funds' transfer agent, the Funds' 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 a 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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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, where available, for its portfolio securities. The Funds normally obtain market values for their investments from independent pricing sources and broker-dealers. Independent pricing sources may use reported last sale prices, official market closing prices, current market quotations or valuations from computerized "evaluation" systems that derive values based on comparable investments. An evaluation 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 investments. If a market value is not readily available from an independent pricing source for a particular investment, that investment is valued at fair value as determined in good faith by or under the direction of the Trust's Board of Trustees.

The amortized cost method of valuation, which approximates market value, generally is used to value short-term debt instruments with 60 days or less remaining to maturity, unless the Board (or a committee designated by it) determines that this does not represent fair value. Investments in open-end investment companies are valued at the daily closing net asset value of the respective investment company. Pursuant to the Funds' use of the practical expedient within ASC Topic 820, investments in non-registered investment companies are also valued at the daily net asset value. All investments quoted in foreign currencies will be valued daily in US dollars on the basis of the foreign currency exchange rates prevailing at the time such valuation is determined by the Funds' custodian. For-

eign currency exchange rates are generally determined as of the close of the NYSE.

Investments traded in the 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 on the valuation date available prior to valuation. Investments which are listed on US and foreign stock exchanges normally are valued at the market closing price, 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 investments for which such fair value pricing may be necessary include, but are not limited to: foreign investments under some circumstances, as discussed below; investments of an issuer that has entered into a restructuring; 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 investments that are restricted as to transfer or resale. The need to fair value the Funds' portfolio investments may also result from low trading volume in foreign markets or thinly traded domestic 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 an 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 investments; and the evaluation of forces which influence the market in which the investments are purchased and sold.

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that would have been determined had the evaluation or formula method not been used. Investments also may be valued based on appraisals derived from information concerning the investment or similar investments received from recognized dealers in those holdings. If a Fund concludes that a market quotation is not readily available for a portfolio 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 investments 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. The systematic fair valuation model may use calculations based on indices of domestic securities and other appropriate indicators, such as prices of relevant ADRs and futures contracts. If an investment is valued at a "fair value," that value is likely to be different from the last quoted market price for the investment. In cases where investments are traded on more than one exchange, the investments are valued on the exchange designated as the primary market by UBS Global AM (Americas), the investment advisor of the Funds.

Valuing investments at fair value involves greater reliance on judgment than valuing 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 an investment if it were to sell the 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.

may change on days when you will not be able to buy and sell your Fund shares. Certain investments 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 investments, the Fund may adjust the previous closing prices to reflect what the Board believes to be the fair value of these investments 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 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 (or a committee designated by it).

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 instruments in a manner as described in that investment company's prospectus.

Additional information about the Funds' current net asset value per share is available to investors on the Funds' Web Site at http://www.ubs.com/us/en/asset_ management/individual_investors/mutual_fund.html.

Management

Investment advisor

UBS Global Asset Management (Americas) Inc., a Delaware corporation located at 1285 Avenue of the Americas, New York, NY 10019, is an investment

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advisor registered with the SEC. UBS Global AM (Americas) serves as the investment advisor to the Funds by managing the investment of assets of each Fund. As of June 30, 2013, the Advisor had approximately $155 billion in assets under management. The Advisor is an indirect, wholly owned subsidiary of UBS and a member of the UBS Global Asset Management Division, which had approximately $621 billion in assets under management as of June 30, 2013. UBS is an internationally diversified organization headquartered in Zurich and Basel, Switzerland, with operations in many areas of the financial services industry.

Bank holding company act limitations

To the extent that UBS Global AM (Americas) maintains a greater than 24.99% interest in the UBS Multi-Asset Income Fund, UBS Global AM (Americas) will be deemed to "control" the Fund for purposes of the U.S. Bank Holding Company Act of 1956, as amended ("BHCA"). Accordingly, the UBS Multi-Asset Income Fund may be subject to certain limitations on its ability to own equity securities of certain issuers set forth in the BHCA. These limitations may be eliminated as UBS Global AM (Americas) reduces its percentage interest in the UBS Multi-Asset Income Fund through redemptions.

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.

UBS Asset Growth Fund

Curt Custard, Luke Browne and Richard Lloyd are the lead portfolio managers for the Fund. Messrs. Custard, Browne and Lloyd 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 Fund invests. Mr. Custard is senior portfolio manager for the Fund and has 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 determining the amount of leverage to use in the portfolio. Information about Messrs. Custard, Browne and Lloyd is provided below.

Curt Custard is Head of Global Investment Solutions and a Group Managing Director at UBS Global Asset Management. Mr. Custard has been at UBS Global Asset Management since 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 Fund since 2009.

Luke Browne is Deputy Global Head of Structured Solutions, part of the Global Investment Solutions team and a Managing Director at UBS Global Asset Management. Mr. Browne has been at UBS Global Asset Management since 2011. Prior to joining UBS Global Asset Management, Mr. Browne worked at Schroder Investment Management since 2008, where he was Head of Structured Solutions. Mr. Browne became a portfolio manager of the Fund in 2013.

Richard Lloyd is Global Head of Structured Solutions, part of the Global Investment Solutions team and a Managing Director at UBS Global Asset Management. Mr. Lloyd has been at UBS Global Asset Management since 2010. Prior to joining UBS Global Asset Management, Mr. Lloyd worked at Insight Investment Management since 2008, where he was Head of Structured Solutions. Mr. Lloyd became a portfolio manager of the Fund in 2013.

UBS Dynamic Alpha Fund and UBS Global Allocation Fund

Curt Custard, Andreas Koester, Jonathan Davies and Lowell Yura are the lead portfolio managers for the UBS Dynamic Alpha Fund and UBS Global Allocation Fund. Messrs. Custard, Koester and Davies 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 se-

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lection, 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. Mr. Davies and Mr. Yura as senior portfolio managers for the Funds, have 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. Information about Mr. Custard is provided above. Information about Messrs. Koester, Davies and Yura is provided below.

Mr. Custard has been a portfolio manager of the UBS Dynamic Alpha Fund since 2008 and the UBS Global Allocation Fund since 2009.

Andreas Koester is Head of Asset Allocation and Currency in the Global Investment Solutions team and a Managing Director at UBS Global Asset Management. Mr. Koester has been at UBS Global Asset Management since 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 Fund since 2009.

Jonathan Davies is Head of Currency in the Global Investment Solutions team, based in London and an Executive Director at UBS Global Asset Management. Mr. Davies has been at UBS Global Asset Management since 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.

Lowell Yura is Head Strategist, Americas and U.K., in the Global Investment Solutions team and a Managing Director at UBS Global Asset Management. Mr. Yura has been at UBS Global Asset Management since 2003. Mr. Yura has been a portfolio manager of the Fund since October 2013.

UBS Multi-Asset Income Fund

Iain Barnes, Curt Custard, Andreas Koester and Lowell Yura are the lead portfolio managers for the Fund. Messrs. Barnes, Custard, Koester and Yura 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 Fund invests. Messrs. Barnes, Custard, Koester and Yura 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 the portfolio to ensure its compliance with its stated investment objectives and strategies. Information about Messrs. Custard and Koester is provided above. Information about Messrs. Barnes and Yura is provided below.

Mr. Custard has been a portfolio manager of the Fund since its inception.

Mr. Koester has been a portfolio manager of the Fund since its inception.

Iain Barnes is a portfolio manager within the Multi-Manager Solutions team and an Executive Director at UBS Global Asset Management. Mr. Barnes has been at UBS Global Asset Management since 2010. Prior to joining UBS Global Asset Management, Mr. Barnes worked at Schroders since 2000, where he was a portfolio manager for multi-manager portfolios. Mr. Barnes has been a portfolio manager of the Fund since its inception.

Mr. Yura has been a portfolio manager of the Fund since its inception.

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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, 2013. For purposes of calculating such fee for UBS Asset Growth 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, 2013 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 dividend expense and security loan fees for securities sold short with respect to the UBS Asset Growth Fund, UBS Dynamic Alpha Fund and UBS Multi-Asset Income 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 28, 2014. 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.

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.

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	Effective gross advisory fee as of June 30,	Advisory fee breakpoint schedule
Fund	2013	Assets under management	Fee
UBS Asset Growth Fund	0.95%	N/A	0.95%
UBS Dynamic Alpha Fund	0.85%	$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
UBS Global Allocation Fund	0.78%	$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 Multi-Asset Income Fund	0.59%	N/A	0.59%

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

The UBS Global Allocation Fund will generally post on its Web Site at http://www.ubs.com/us/en/
asset_management/individual_investors/
mutual_fund.html, the top ten largest stock portfolio holdings of the Fund, and the percentage that these holdings represent of the Fund's total assets, as of the most recent calendar quarter end, 25 calendar days after the end of the calendar quarter.

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/us/en/
asset_management/individual_investors/
mutual_fund.html. Please consult the Funds' SAI for a description of the policies and procedures that govern disclosure of the Funds' portfolio holdings.

Dividends and taxes

Dividends and distributions

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realized capital gains, if any, semi-annually, usually in September and 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 distribution will vary, and there is no guarantee a Fund will pay either an income dividend or a capital gains distribution.

Classes with higher expenses are expected to have lower income dividends.

You will receive income dividends and capital gain distributions in additional shares of the same class of a Fund unless you notify your investment professional or the Fund in writing that you elect to receive them in cash. Clients who own Fund shares through certain wrap fee programs may not have the option 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.

Annual statements—Each year, the Funds will send you annual statements (Forms 1099) of your account activity to assist you in completing your federal, state and local tax returns. Distributions declared in December to shareholders of record in such month, but paid in January, are taxable as if they were paid in December. Prior to issuing your statements, the Funds make every effort to reduce the number of corrected forms mailed to shareholders. However, if a Fund finds it necessary to reclassify its distributions or adjust the cost basis of any covered shares (defined below) sold or exchanged after you receive your tax statement, the Fund will send you a corrected Form 1099.

Avoid "buying a dividend"—At the time you purchase your Fund shares, a Fund's net asset value may reflect undistributed income, undistributed capital gains, or net unrealized appreciation in value of portfolio securities held by the Fund. For taxable investors, a subsequent distribution to you of such amounts, although constituting a return of your investment, would be taxable. Buying shares in a Fund just before it declares an income dividend or capital gains distribution is sometimes known as "buying a dividend."

Taxes

Fund distributions—Each Fund expects, based on its investment objective and strategies, that its distributions, if any, will be taxable as ordinary income, capital gains, or some combination of both. This is true whether you reinvest your distributions in additional Fund shares or receive them in cash.

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, then any foreign taxes it pays on these investments may be passed through to you as a foreign tax credit.

Sale or redemption of Funds shares—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. Beginning with the 2012 calendar year, the Funds will be required to report to you and the Internal Revenue Service ("IRS") annually on Form 1099-B not only the gross proceeds of Fund shares you sell or redeem but also their cost basis for shares purchased or acquired on or after January 1, 2012 ("covered shares"). Cost basis will be calculated using the Funds' default method of average cost, unless you instruct the Funds to use a different calculation method. Shareholders should carefully review the cost basis information provided by the Funds and make any additional basis, holding period or other adjustments that are required when reporting these amounts on their federal income tax returns. If your account is held by your investment representative (financial advisor or other broker), please contact that representative with respect to reporting of cost basis and available elections

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for your account. Their default method for cost basis reporting may be different than the Funds' default method. Tax-advantaged retirement accounts will not be affected.

Medicare tax—For taxable years beginning after December 31, 2012, an additional 3.8% Medicare tax will be imposed on certain net investment income (including ordinary dividends and capital gain distributions received from a Fund and net gains from redemptions or other taxable dispositions of Fund shares) of US individuals, estates and trusts to the extent that such person's "modified adjusted gross income" (in the case of an individual) or "adjusted gross income" (in the case of an estate or trust) exceeds a threshold amount. This Medicare tax, if applicable, is reported by you on, and paid with, your federal income tax return.

Backup withholding—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.

State and local taxes—Fund distributions and gains from the sale or exchange of your Fund shares generally are subject to state and local taxes.

holding at the source, any such dividends and distributions of income and capital gains will be subject to backup withholding at a rate of 28% if you fail to properly certify that you are not a US person.

Other reporting and withholding requirements—Payments to a shareholder that is either a foreign financial institution ("FFI") or a non-financial foreign entity ("NFFE") within the meaning of the Foreign Account Tax Compliance Act ("FATCA") may be subject to a generally nonrefundable 30% withholding tax on: (a) income dividends paid by a Fund after June 30, 2014, and (b) certain capital gain distributions and the proceeds arising from the sale of Fund shares paid by a Fund after December 31, 2016. FATCA withholding tax generally can be avoided: (a) by an FFI, subject to any applicable intergovernmental agreement or other exemption, if it enters into a valid agreement with the Internal Revenue Service to, among other requirements, report required information about certain direct and indirect ownership of foreign financial accounts held by US persons with the FFI and (b) by an NFFE, if it: (i) certifies that it has no substantial US persons as owners or (ii) if it does have such owners, reports information relating to them. A Fund may disclose the information that it receives from its shareholders to the Internal Revenue Service, non-U.S. taxing authorities or other parties as necessary to comply with FATCA. Withholding also may be required if a foreign entity that is a shareholder of a Fund fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.

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 professional about federal, state, local, or foreign tax consequences before making an investment in a Fund.

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Supplemental investment advisor performance information

Because the Advisor has managed other advisory accounts (including registered investment companies) 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 ("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.

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 included in the Account Composite Performance (with the exception of the registered investment companies) were not necessarily subject to certain investment limitations, diversification requirements and other restrictions imposed on mutual funds by the 1940 Act and the IRC, which, if applicable, may have adversely affected the performance of these accounts.

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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The UBS Funds

Supplemental performance information for the advisor of UBS Dynamic Alpha Fund

Composite performance: Dynamic Alpha Composite ("DAC")
December 1, 2003 through December 31, 2012

Composite performance: DAC
For periods ended December 31, 2012

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			Citigroup One-Month US Treasury Bill Index (%)⁵
1 year		7.44	%		13.70	%		15.22	%		0.91	%		15.83	%		0.05	%
5 years		0.46			1.60			2.94			3.33			(1.18	)		0.33
Since inception		2.82			3.46			4.79			3.51			5.64			1.66

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. Net total return indices reinvest dividends after the deduction of withholding taxes, using a tax rate applicable to non-resident institutional investors who do not benefit from double taxation treaties. 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 Citigroup One-Month US Treasury Bill Index is an unmanaged index representing monthly return equivalents of yield averages of the last one month Treasury Bill issue. Investors should note that indices do not reflect the deduction of fees, expenses or taxes.

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The UBS Funds

Supplemental performance information for the advisor of UBS Dynamic Alpha Fund

Composite performance: DAC
December 1, 2003 through December 31, 2012

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			Citigroup One-Month US Treasury Bill Index (%)⁵
2003⁶		(3.29	)%		2.90	%		3.01	%		0.70	%		6.27	%		0.08	%
2004		3.52			9.54			10.98			1.32			14.72			1.21
2005		2.26			8.20			9.56			1.39			9.49			2.93
2006		1.33			7.22			8.48			3.81			20.07			4.75
2007		(9.08	)		(3.79	)		(2.64	)		8.16			9.04			4.56
2008		(25.87	)		(21.56	)		(20.57	)		8.73			(40.71	)		1.35
2009		16.79			23.58			25.20			0.23			29.99			0.09
2010		(4.87	)		0.67			2.03			3.61			11.76			0.12
2011		(7.80	)		(2.43	)		(1.11	)		3.36			(5.54	)		0.05
2012		7.44			13.70			15.22			0.91			15.83			0.05

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

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The UBS Funds

Supplemental performance information for the advisor of UBS Global Allocation Fund

Composite performance: Global Securities Composite ("GSC")⁷
January 1, 1985 through December 31, 2012

Composite performance: GSC⁷
For periods ended December 31, 2012

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		7.08	%		13.31	%		14.72	%		16.42	%		15.83	%		1.65	%		11.88	%
5 years		(1.07	)		0.05			1.26			2.04			(1.18	)		5.27			2.13
10 years		5.73			6.33			7.60			7.68			7.51			6.04			7.74
Since inception		8.60			8.82			10.22			10.52			9.19			8.61			9.73

³ The Russell 3000 Index is designed to measure the performance of the largest 3,000 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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The UBS Funds

⁵ The Citigroup World Government Bond Index is an unmanaged market capitalization-weighted index designed to measure the performance of fixed-rate, local currency, investment-grade sovereign bonds with a one-year minimum maturity. 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 and is a composite of five indexes compiled by independent data providers: 65% MSCI All Country World Index (net), 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 US 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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The UBS Funds

Supplemental performance information for the advisor of UBS Global Allocation Fund

Composite performance: GSC⁷
January 1, 1985 through December 31, 2012

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
2010		4.77			10.87			12.21			16.93			11.76			5.17			11.02
2011		(12.31	)		(7.21	)		(6.07	)		1.03			(5.54	)		6.35			(2.14	)
2012		7.08			13.31			14.72			16.42			15.83			1.65			11.88

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The UBS Funds

⁶ The GSMI Mutual Fund Index is an unmanaged index compiled by the Advisor, and is a composite of five indexes compiled by independent data providers: 65% MSCI All Country World Index (net), 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 US Broad Investment Grade Index. Investors should note that indices do not reflect the deduction of fees and expenses.

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The UBS Funds

Financial highlights

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, 2013 (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, 2013 and the Report are incorporated by reference into the SAI.

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UBS Asset Growth Fund (formerly, UBS Global Frontier Fund)—Financial highlights

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

	Class A
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	7.08		$	8.36		$	6.32		$	5.59		$	8.75
Income (loss) from investment operations:
Net investment (loss)¹		(0.06	)		(0.06	)		(0.09	)		(0.07	)		(0.06	)
Net realized and unrealized gain (loss)		0.98			(0.84	)		2.38			1.12			(2.98	)
Total income (loss) from investment operations		0.92			(0.90	)		2.29			1.05			(3.04	)
Less dividends/distributions:
From net investment income		(0.10	)		(0.38	)		(0.25	)		(0.32	)		(0.12	)
Net asset value, end of year	$	7.90		$	7.08		$	8.36		$	6.32		$	5.59
Total investment return²		12.98	%		(10.38	)%		36.53	%		18.30	%		(34.51	)%
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement		1.90	%		1.73	%		1.64	%		1.62	%		1.66	%
Expenses after fee waivers and/or expense reimbursement		1.40	%		1.40	%		1.40	%		1.40	%		1.40	%
Net investment loss		(0.73	)%		(0.78	)%		(1.14	)%		(1.01	)%		(1.01	)%
Supplemental data:
Net assets, end of year (000's)	$	25,047		$	31,337		$	50,167		$	48,479		$	48,395
Portfolio turnover rate		49	%		109	%		33	%		54	%		148	%

	Class Y
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	7.09		$	8.36		$	6.32		$	5.60		$	8.77
Income (loss) from investment operations:
Net investment loss¹		(0.04	)		(0.04	)		(0.07	)		(0.05	)		(0.04	)
Net realized and unrealized gain (loss)		0.97			(0.83	)		2.38			1.11			(2.99	)
Total income (loss) from investment operations		0.93			(0.87	)		2.31			1.06			(3.03	)
Less dividends/distributions:
From net investment income		(0.12	)		(0.40	)		(0.27	)		(0.34	)		(0.14	)
Net asset value, end of year	$	7.90		$	7.09		$	8.36		$	6.32		$	5.60
Total investment return²		13.21	%		(10.07	)%		36.66	%		18.54	%		(34.30	)%
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement		1.67	%		1.51	%		1.43	%		1.35	%		1.35	%
Expenses after fee waivers and/or expense reimbursement		1.15	%		1.15	%		1.15	%		1.15	%		1.15	%
Net investment loss		(0.48	)%		(0.54	)%		(0.87	)%		(0.72	)%		(0.73	)%
Supplemental data:
Net assets, end of year (000's)	$	1,835		$	1,949		$	1,395		$	185		$	1,699
Portfolio turnover rate		49	%		109	%		33	%		54	%		148	%

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 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 Fund dividends/distributions or the redemption of Fund shares.

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	Class C
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	7.05		$	8.34		$	6.31		$	5.58		$	8.71
Income (loss) from investment operations:
Net investment (loss)¹		(0.11	)		(0.11	)		(0.15	)		(0.12	)		(0.10	)
Net realized and unrealized gain (loss)		0.97			(0.83	)		2.37			1.12			(2.96	)
Total income (loss) from investment operations		0.86			(0.94	)		2.22			1.00			(3.06	)
Less dividends/distributions:
From net investment income		(0.03	)		(0.35	)		(0.19	)		(0.27	)		(0.07	)
Net asset value, end of year	$	7.88		$	7.05		$	8.34		$	6.31		$	5.58
Total investment return²		12.15	%		(11.00	)%		35.39	%		17.50	%		(35.03	)%
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement		2.67	%		2.51	%		2.41	%		2.41	%		2.48	%
Expenses after fee waivers and/or expense reimbursement		2.15	%		2.15	%		2.15	%		2.15	%		2.15	%
Net investment loss		(1.48	)%		(1.53	)%		(1.89	)%		(1.76	)%		(1.76	)%
Supplemental data:
Net assets, end of year (000's)	$	8,640		$	9,931		$	14,989		$	13,792		$	14,559
Portfolio turnover rate		49	%		109	%		33	%		54	%		148	%

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UBS Dynamic Alpha Fund—Financial highlights

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

	Class A
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	6.36		$	5.98		$	5.92		$	5.45		$	9.89
Income (loss) from investment operations:
Net investment income (loss)¹		0.07			0.08			0.06			0.02			0.14
Net realized and unrealized gain (loss)		0.50			0.30			0.16			0.75			(1.84	)
Net increase from payment by Advisor		—			—			—			—			0.00³
Total income (loss) from investment operations		0.57			0.38			0.22			0.77			(1.70	)
Less dividends/distributions:
From net investment income		(0.11	)		—			(0.16	)		(0.30	)		—
From net realized gains		—			—			—			—			(2.74	)
Total dividends/distributions		(0.11	)		—			(0.16	)		(0.30	)		(2.74	)
Net asset value, end of year	$	6.82		$	6.36		$	5.98		$	5.92		$	5.45
Total investment return²		9.05	%		6.18	%		3.58	%		14.19	%		(14.31	)%⁴
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement and after dividend expense and security loan fees for securities sold short		1.43	%		1.60	%		1.79	%		1.74	%		1.54	%
Expenses after fee waivers and/or expense reimbursement and after dividend expense and security loan fees for securities sold short		1.35	%		1.54	%		1.76	%		1.72	%		1.54	%
Expenses after fee waivers and/or expense reimbursement and before dividend expense and security loan fees for securities sold short		1.35	%		1.35	%		1.35	%		1.35	%		1.30	%
Net investment income (loss)		0.98	%		1.33	%		0.95	%		0.31	%		1.99	%
Supplemental data:
Net assets, end of year (000's)	$	208,369		$	160,773		$	216,297		$	334,131		$	398,321
Portfolio turnover rate		74	%		164	%		65	%		58	%		139	%

	Class Y
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	6.48		$	6.09		$	6.03		$	5.54		$	9.96
Income (loss) from investment operations:
Net investment income¹		0.09			0.10			0.08			0.03			0.17
Net realized and unrealized gain (loss)		0.52			0.29			0.16			0.78			(1.85	)
Net increase from payment by Advisor		—			—			—			—			0.00³
Total income (loss) from investment operations		0.61			0.39			0.24			0.81			(1.68	)
Less dividends/distributions:
From net investment income		(0.13	)		—			(0.18	)		(0.32	)		—
From net realized gains		—			—			—			—			(2.74	)
Total dividends/distributions		(0.13	)		—			(0.18	)		(0.32	)		(2.74	)
Net asset value, end of year	$	6.96		$	6.48		$	6.09		$	6.03		$	5.54
Total investment return²		9.29	%		6.57	%		3.89	%		14.49	%		(13.99	)%⁴
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement and after dividend expense and security loan fees for securities sold short		1.12	%		1.28	%		1.49	%		1.42	%		1.22	%
Expenses after fee waivers and/or expense reimbursement and after dividend expense and security loan fees for securities sold short		1.10	%		1.28	%		1.49	%		1.42	%		1.22	%
Expenses after fee waivers and/or expense reimbursement and before dividend expense and security loan fees for securities sold short		1.10	%		1.10	%		1.07	%		1.04	%		1.00	%
Net investment income		1.25	%		1.56	%		1.25	%		0.56	%		2.23	%
Supplemental data:
Net assets, end of year (000's)	$	48,113		$	51,807		$	87,743		$	83,561		$	77,254
Portfolio turnover rate		74	%		164	%		65	%		58	%		139	%

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 Fund 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, 2009, the Fund's total investment return included a reimbursement by the Investment Advisor for amounts related to a trading error that had an impact on total return of less than 0.005%.

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	Class C
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	6.02		$	5.71		$	5.65		$	5.21		$	9.68
Income (loss) from investment operations:
Net investment income (loss)¹		0.02			0.03			0.01			(0.03	)		0.08
Net realized and unrealized gain (loss)		0.48			0.28			0.15			0.72			(1.81	)
Net increase from payment by Advisor		—			—			—			—			0.00³
Total income (loss) from investment operations		0.50			0.31			0.16			0.69			(1.73	)
Less dividends/distributions:
From net investment income		(0.06	)		—			(0.10	)		(0.25	)		—
From net realized gains		—			—			—			—			(2.74	)
Total dividends/distributions		(0.06	)		—			(0.10	)		(0.25	)		(2.74	)
Net asset value, end of year	$	6.46		$	6.02		$	5.71		$	5.65		$	5.21
Total investment return²		8.22	%		5.60	%		2.82	%		13.15	%		(14.98	)%⁴
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement and after dividend expense and security loan fees for securities sold short		2.19	%		2.36	%		2.55	%		2.50	%		2.32	%
Expenses after fee waivers and/or expense reimbursement and after dividend expense and security loan fees for securities sold short		2.10	%		2.29	%		2.51	%		2.47	%		2.32	%
Expenses after fee waivers and/or expense reimbursement and before dividend expense and security loan fees for securities sold short		2.10	%		2.10	%		2.10	%		2.10	%		2.07	%
Net investment income (loss)		0.24	%		0.58	%		0.20	%		(0.44	)%		1.24	%
Supplemental data:
Net assets, end of year (000's)	$	53,405		$	49,155		$	66,349		$	104,146		$	131,745
Portfolio turnover rate		74	%		164	%		65	%		58	%		139	%

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UBS Global Allocation Fund—Financial highlights

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

	Class A
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	9.12		$	10.27		$	8.66		$	8.18		$	12.59
Income (loss) from investment operations:
Net investment income (loss)¹		0.01			(0.00	)³		0.00³			0.00³			0.08
Net realized and unrealized gain (loss)		0.88			(0.72	)		2.05			1.11			(3.08	)
Total income (loss) from investment operations		0.89			(0.72	)		2.05			1.11			(3.00	)
Less dividends/distributions:
From net investment income		(0.22	)		(0.43	)		(0.44	)		(0.63	)		(0.46	)
From net realized gains		—			—			—			—			(0.95	)
Total dividends/distributions		(0.22	)		(0.43	)		(0.44	)		(0.63	)		(1.41	)
Net asset value, end of year	$	9.79		$	9.12		$	10.27		$	8.66		$	8.18
Total investment return²		9.86	%		(6.83	)%		23.87	%		13.11	%		(22.36	)%
Ratios to average net assets:
Expenses		1.28	%		1.25	%		1.21	%		1.21	%		1.19	%
Net investment income (loss)		0.12	%		(0.03	)%		0.05	%		0.01	%		0.84	%
Supplemental data:
Net assets, end of year (000's)	$	377,781		$	494,604		$	753,750		$	814,760		$	996,059
Portfolio turnover rate		54	%		93	%		68	%		90	%		122	%

	Class Y
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	9.30		$	10.48		$	8.84		$	8.34		$	12.80
Income (loss) from investment operations:
Net investment income¹		0.04			0.03			0.04			0.03			0.10
Net realized and unrealized gain (loss)		0.90			(0.75	)		2.07			1.14			(3.13	)
Total income (loss) from investment operations		0.94			(0.72	)		2.11			1.17			(3.03	)
Less dividends/distributions:
From net investment income		(0.26	)		(0.46	)		(0.47	)		(0.67	)		(0.48	)
From net realized gains		—			—			—			—			(0.95	)
Total dividends/distributions		(0.26	)		(0.46	)		(0.47	)		(0.67	)		(1.43	)
Net asset value, end of year	$	9.98		$	9.30		$	10.48		$	8.84		$	8.34
Total investment return²		10.22	%		(6.59	)%		24.15	%		13.54	%		(22.12	)%
Ratios to average net assets:
Expenses		0.98	%		0.95	%		0.92	%		0.93	%		0.90	%
Net investment income		0.44	%		0.27	%		0.35	%		0.29	%		1.14	%
Supplemental data:
Net assets, end of year (000's)	$	127,751		$	132,941		$	179,875		$	170,517		$	224,281
Portfolio turnover rate		54	%		93	%		68	%		90	%		122	%

¹ Calculated using the average shares method.

³ Amount represents less than $0.005 per share

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	Class C
	Year ended June 30,
	2013			2012			2011			2010			2009
Net asset value, beginning of year	$	8.89		$	10.00		$	8.42		$	7.96		$	12.29
Income (loss) from investment operations:
Net investment income (loss)¹		(0.06	)		(0.07	)		(0.07	)		(0.07	)		0.00³
Net realized and unrealized gain (loss)		0.86			(0.71	)		1.99			1.07			(2.99	)
Total income (loss) from investment operations		0.80			(0.78	)		1.92			1.00			(2.99	)
Less dividends/distributions:
From net investment income		(0.14	)		(0.33	)		(0.34	)		(0.54	)		(0.39	)
From net realized gains		—			—			—			—			(0.95	)
Total dividends/distributions		(0.14	)		(0.33	)		(0.34	)		(0.54	)		(1.34	)
Net asset value, end of year	$	9.55		$	8.89		$	10.00		$	8.42		$	7.96
Total investment return²		9.11	%		(7.66	)%		22.90	%		12.29	%		(22.93	)%
Ratios to average net assets:
Expenses		2.06	%		2.02	%		1.99	%		2.00	%		1.97	%
Net investment income (loss)		(0.65	)%		(0.80	)%		(0.73	)%		(0.78	)%		0.06	%
Supplemental data:
Net assets, end of year (000's)	$	195,427		$	238,054		$	348,721		$	381,137		$	456,577
Portfolio turnover rate		54	%		93	%		68	%		90	%		122	%

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UBS Multi-Asset Income Fund—Financial highlights

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

	Class A						Class C						Class Y
	For the year ended June 30, 2013			For the period ended June 30, 2012³			For the year ended June 30, 2013			For the period ended June 30, 2012³			For the year ended June 30, 2013			For the period ended June 30, 2012³
Net asset value, beginning of period	$	10.00		$	10.00		$	10.00		$	10.00		$	10.00		$	10.00
Income (loss) from investment operations:
Net investment income¹		0.29			0.04			0.22			0.03			0.31			0.06
Net realized and unrealized gain (loss)		0.11			0.01			0.10			0.01			0.12			(0.01	)
Total income from investment operations		0.40			0.05			0.32			0.04			0.43			0.05
Less dividends/distributions:
From net investment income		(0.33	)		(0.05	)		(0.26	)		(0.04	)		(0.36	)		(0.05	)
From net realized gains		(0.04	)		—			(0.04	)		—			(0.04	)		—
Total dividends/distributions		(0.37	)		(0.05	)		(0.30	)		(0.04	)		(0.40	)		(0.05	)
Net asset value, end of period	$	10.03		$	10.00		$	10.02		$	10.00		$	10.03		$	10.00
Total investment return²		3.98	%		0.50	%		3.14	%		0.42	%		4.23	%		0.53	%
Ratios to average net assets:
Expenses before fee waivers and/or expense reimbursement		1.76	%		2.97	%⁴		2.52	%		3.81	%⁴		1.50	%		2.73	%⁴
Expenses after fee waivers and/or expense reimbursement		0.95	%		0.95	%⁴		1.70	%		1.70	%⁴		0.70	%		0.70	%⁴
Net investment income		2.83	%		2.32	%⁴		2.09	%		1.82	%⁴		3.01	%		3.42	%⁴
Supplemental data:
Net assets, end of period (000's)	$	24,390		$	2,743		$	8,824		$	1,164		$	26,077		$	25,118
Portfolio turnover rate		116	%		17	%		116	%		17	%		116	%		17	%

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 Fund dividends/distributions or the redemption of Fund shares.

³ For the period April 25, 2012 (commencement of operations) through June 30, 2012.

⁴ Annualized.

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Funds' privacy notice

This notice describes the privacy policy of the UBS Family of Funds, the 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 and other forms or correspondence submitted to the Funds, may include name(s), address, e-mail address, telephone number, date of birth, social security number or other tax identification number, bank account information, information about your transactions and experiences with the Funds, and any affiliation a client has with UBS Financial Services Inc. or its affiliates ("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 and to follow established procedures. The Funds maintain physical, electronic and procedural safeguards to protect Personal Information and to comply with applicable laws and regulations.

The Funds may share Personal Information with their affiliates to facilitate the servicing of accounts and for other business purposes, or as otherwise required or permitted by applicable law. The Funds may also share Personal Information with non-affiliated third parties that perform services for the Funds, such as vendors that provide data or transaction processing, computer software maintenance and development, and other administrative services. When the Funds share Personal Information with a non-affiliated third party, they will do so pursuant to a contract that includes provisions designed to ensure that the third party will uphold and maintain privacy standards when handling Personal Information. In addition to sharing information with non-affiliated third parties to facilitate the servicing of accounts and for other business purposes, the Funds may disclose Personal Information to non-affiliated third parties as otherwise required or permitted by applicable law. For example, the Funds may disclose Personal Information to credit bureaus or regulatory authorities to facilitate or comply with investigations; to protect against or prevent actual or potential fraud, unauthorized transactions, claims or other liabilities; or to respond to judicial or legal process, such as subpoena requests.

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 (or affirmatively approve the use of Personal Information, if required by applicable law). 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.

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UBS Global Asset Management, Americas Region

Business continuity planning overview

UBS Global Asset Management affiliates UBS Global Asset Management (US) and UBS Global Asset Management (Americas) will protect information assets, processes, and customer data from unpredictable events through preparation and testing of a comprehensive business continuity capability. This capability seeks recovery of the technology infrastructure and information, and prevention of the loss of company or customer information and transactions. In the event of a crisis scenario, we will recover those functions deemed to be critical to our business and our clients, and strive to resume processing within predefined time frames following a disaster declaration (typically 24-36 hours). Business continuity processes will provide us the ability to continue critical business functions regardless of the type, scope, or duration of a localized event. However, these processes are dependent upon various external resources beyond our control, such as regional telecommunications, transportation networks, and other public utilities.

Essential elements of the business continuity plan include:

• Crisis communication procedures—Action plans for coordinating essential communications for crisis management leaders, employees, and key business partners

• Information technology backup and recovery procedures—Comprehensive technology and data management plans designed to protect the integrity and speed the recovery of essential technology infrastructure and data

• Disaster recovery site—Alternative workspace, technology infrastructure, and systems support that is designed to be fully operational within 24-36 hours of a disaster declaration

• Testing regimen—The business continuity plan is reviewed on a quarterly basis and tested on an annual basis, including full activation of the disaster recovery facility.

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

Annual/semiannual reports

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 obtain free copies of the Funds' annual and semiannual reports and the SAI, and discuss your questions about the Funds, by contacting the Funds directly at 1-800-647 1568, or by contacting your investment professional. 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/us/en/asset_management/
individual_investors/mutual_fund.html.

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. 20549-1520; 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

UBS Global Asset Management (Americas) Inc
is a subsidiary of UBS AG.

[S1164]

UBS Equity Funds

Prospectus

The UBS Funds

Prospectus

October 28, 2013

UBS Equity Long-Short Multi-Strategy Fund

Class: A: BMNAX, C: BMNCX, Y: BMNYX

UBS Global Sustainable Equity Fund

(formerly, UBS International Equity Fund)

Class: A: BNIEX, C: BNICX, Y: BNUEX

UBS U.S. Defensive Equity Fund

Class: A: BEAAX, C: BEACX, Y: BEAYX

UBS U.S. Equity Opportunity Fund

Class: A: BNVAX, C: BNVCX, Y: BUSVX

UBS U.S. Large Cap Equity Fund

Class: A: BNEQX, C: BNQCX, Y: BPEQX

UBS U.S. Small Cap Growth Fund

Class: A: BNSCX, C: BNMCX, Y: BISCX

This prospectus offers Class A, Class C and Class Y shares in six of the fourteen series of The UBS Funds (the "Trust") listed above (each, a "Fund" and, collectively, the "Funds").

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 Equity Long-Short Multi-Strategy Fund				Page 3
UBS Global Sustainable Equity Fund				Page 8
UBS U.S. Defensive Equity Fund				Page 12
UBS U.S. Equity Opportunity Fund				Page 17
UBS U.S. Large Cap Equity Fund				Page 21
UBS U.S. Small Cap Growth Fund				Page 25
More information about the funds
UBS Equity Long-Short Multi-Strategy Fund—Investment objective, strategies, securities selection and risks				Page 29
UBS Global Sustainable Equity Fund—Investment objective, strategies, securities selection and risks				Page 34
UBS U.S. Defensive Equity Fund—Investment objective, strategies, securities selection and risks				Page 37
UBS U.S. Equity Opportunity Fund—Investment objective, strategies, securities selection and risks				Page 42
UBS U.S. Large Cap Equity Fund—Investment objective, strategies, securities selection and risks				Page 45
UBS U.S. Small Cap Growth Fund—Investment objective, strategies, securities selection and risks				Page 48
Your investment
Information for managing your fund account
Managing your fund account				Page 51
—Flexible pricing				Page 51
—Buying shares				Page 55
—Selling shares				Page 58
—Exchanging shares				Page 59
—Pricing and valuation				Page 60
Additional information
Additional important information about the funds
Management				Page 62
Disclosure of portfolio holdings				Page 66
Dividends and taxes				Page 67
Supplemental investment advisor performance information				Page 70
Financial highlights				Page 77
Where to learn more about the funds				Back cover

Please find the UBS family of funds privacy notice on page 90 of this prospectus.

Please find the UBS Global Asset Management business continuity planning overview on page 91 of this prospectus.

The funds are not a complete or balanced investment program.

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UBS Equity Long-Short Multi-Strategy Fund
Fund summary

Investment objective

The Fund seeks to preserve and grow capital with low correlation to the equity markets.

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		1.25	%		1.25	%		1.25	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses:
Dividend expense and security loan fees for securities sold short²		2.40			2.40			2.40
Other		2.93			2.38			2.60
Total other expenses		5.33			4.78			5.00
Acquired fund fees and expenses		0.02			0.02			0.02
Total annual fund operating expenses³		6.85			7.05			6.27
Less management fee waiver/expense reimbursements		2.68			2.13			2.35
Total annual fund operating expenses after management fee waiver/expense reimbursements^3,4		4.17			4.92			3.92

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² Due to the anticipated increase of the use of short sales, the Fund has restated the "Dividend expense and security loan fees for securities sold short" based on the anticipated expenses for the new strategy. These "Dividend expense and security loan fees for securities sold short" are based on estimates and may vary based on actual investments. The actual "Dividend expense and security loan fees for securities sold short" for the Fund's fiscal year ended June 30, 2013 were 2.18% for Class A shares, 2.25% for Class C shares and 2.31% for Class Y shares.

³ 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.

⁴ 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 dividend expense and security loan fees 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 dividend expense and security loan fees for securities sold short), through the period ending October 28, 2014, do not exceed 1.75% for Class A shares, 2.50% for Class C shares and 1.50% 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon

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the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

Example

	1 year		3 years		5 years		10 years
Class A	$	946	$	2,227	$	3,461	$	6,353
Class C (assuming sale of all shares at end of period)		592		1,875		3,201		6,286
Class C (assuming no sale of shares)		492		1,875		3,201		6,286
Class Y		394		1,646		2,866		5,782

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 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 167% of the average value of its portfolio.

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 and/or equity-related instruments. Equity-related instruments include securities or other instruments that derive their value from equity securities and may include such instruments as short sales of equity securities, swaps on equity securities, and futures and options on equity securities. Investments by the Fund in equity securities may include, but are not limited to, common stock and preferred stock of issuers in developed countries (including the United States) and emerging markets. The Fund's equity investments may include large, intermediate and small capitalization companies. The Fund will maintain both long positions and short positions in equity securities and securities

with equity-like characteristics. The Fund also may invest in securities convertible into equity securities.

The Fund may, but is not required to, use exchange-traded or over-the-counter ("OTC") 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 (specifically, total return and currency swaps), equity participation notes and equity linked notes. All of these derivatives may be used for risk management purposes, such as hedging against a specific security or currency, or to manage or adjust the risk profile of the Fund. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; to obtain exposure to certain markets; or to establish net short positions for individual markets, currencies or securities.

Management process

The Fund seeks to maximize total returns by allocating its assets among one or more distinct equity investment strategies (each a "Fund component" and together, the "Fund components"), which are managed by portfolio management teams at the Advisor. Each Fund component is unique in terms of the source of its investment insight, its geographic focus, or both. A Fund component will purchase securities long that it believes will outperform the market, other Fund securities or both, and sell securities short that are expected to underperform the market, other Fund securities or both. The Fund engages in its long/short strategies in order to generate returns with low correlations to equity markets.

The Advisor selects Fund components and allocates the Fund's assets among the Fund components based on each Fund component's expected contribution to the risk adjusted investment return of the Fund. Fund components are chosen by the Advisor in part because the Fund components demonstrate a low correlation of returns versus equity markets and among each other. The Advisor intends to allocate assets among the Fund components with the goal of providing returns for the Fund that are a function of the Advisor's stock-level investment insights rather than a function of broad market movements.

In deciding the Fund's allocation to each Fund component, the Advisor utilizes analytical tools that enable the

UBS Global Asset Management
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Advisor to view the entire investment portfolio of the Fund across all underlying components in order to best assess the allocation of Fund assets among these components based on alpha potential and contribution to volatility and to monitor the impact of individual stock positions, both long and short positions, on the Fund's entire portfolio.

The Fund components utilize fundamental valuation, quantitative research or a combination of both to construct a portfolio. The investment decisions for certain Fund components are based on price/value discrepancies as identified by the Advisor's fundamental valuation process. In selecting securities utilizing the fundamental valuation process, 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 investment decisions for other Fund components are based on investment opportunities generated by quantitative research techniques that systematically exploit market anomalies to provide consistent excess returns for the Fund.

The Fund's expected net equity market exposure (long market value – short market value) will typically range from 10% to 50%; however, in response to market conditions the Fund may adjust its net equity market exposure. The Fund's net equity market exposure may range from -25% to +75% and at the same time will comply with all leverage restrictions required by Section 18 of the 1940 Act and subsequent determinations of the SEC and any other regulatory limitations. The Fund may hold a substantial portion of its total assets in cash when the Fund maintains a net short equity market position. By taking both long and short positions, the Fund seeks to provide some protection in down markets when compared to a fund that takes only long positions.

Main risks

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

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 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.

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. 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.

Multi-strategy risk: The risk that the Fund may allocate assets to a Fund component that underperforms other strategy types.

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to a derivative contract is unable or unwilling to meet its financial obligations). In addition, many types of swaps and other non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Performance

Risk/return bar chart and table

market performance. Index reflects no deduction for fees, expenses or taxes. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. On September 5, 2012 the Fund's investment strategy changed. The performance information below, prior to that date, is attributable to the Fund's previous investment strategy. Updated performance for the Fund is available at http://globalam-us.ubs.com/corpweb/performance.do.

Total return

Total return January 1 - September 30, 2013: 6.16%
Best quarter during calendar years shown—4Q 2012: 0.86%
Worst quarter during calendar years shown—3Q 2012: (1.58)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			Life of class
Class A (6/30/10)
Return before taxes		(7.98	)%		(4.83	)%
Class C (6/30/10)
Return before taxes		(4.34	)		(3.38	)
Class Y (6/30/10)
Return before taxes		(2.28	)		(2.38	)
Return after taxes on distributions		(2.28	)		(2.38	)
Return after taxes on distributions and sale of fund shares		(1.49	)		(2.01	)
Citigroup Three-Month US Treasury Bill Index		0.07			0.09

Investment advisor

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

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Portfolio managers

• John Leonard, portfolio manager of the Fund since 2012.

• Ian Paczek, portfolio manager of the Fund since its inception.

• Ian McIntosh, portfolio manager of the Fund since 2012.

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

Purchase & sale of fund shares

Tax information

Payments to broker/dealers and other financial intermediaries

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UBS Global Sustainable 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

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses²		1.60			1.60			1.60
Total annual fund operating expenses		2.65			3.40			2.40
Less management fee waiver/expense reimbursements		1.40			1.40			1.40
Total annual fund operating expenses after management fee waiver/expense reimbursements³		1.25			2.00			1.00

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² "Other expenses" include "Acquired fund fees and expenses," which were less than 0.01% of the average net assets of the Fund.

³ 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, interest, taxes, brokerage commissions and extraordinary expenses) so that the Fund's ordinary operating expenses (excluding expenses incurred through investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses) do not exceed 1.25% for Class A shares, 2.00% for Class C shares and 1.00% for Class Y shares. This fee waiver and expense arrangement may only be amended or terminated by shareholders.

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.

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8

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	$	670	$	925	$	1,199	$	1,978
Class C (assuming sale of all shares at end of period)		303		627		1,078		2,327
Class C (assuming no sale of shares)		203		627		1,078		2,327
Class Y		102		318		552		1,225

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. 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. Under normal market conditions, the Fund invests primarily (at least 65% 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. Up to 35% of the Fund's assets may be invested in U.S. equity securities. 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 may invest in stocks of companies of any size.

The Fund may, but is not required to, use exchange-traded or over-the-counter ("OTC") derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include futures, forward currency agreements and equity participation notes. All of these derivatives may be used for risk management purposes to manage or adjust the risk profile of the Fund. Futures on currencies and forward currency agreements may also be used to hedge against a specific currency. In addition, all of the derivative instruments listed above may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional

direct investments (except for forward currency agreements); or to obtain exposure to certain markets (except for forward currency agreements). The Fund also may use futures contracts on equity securities and indices to gain market exposure on its uninvested cash.

Management process

The Advisor's investment decisions are based upon price/value discrepancies as identified by the Advisor's fundamental valuation process.

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.

The Advisor will employ both a positive and negative screening process with regard to securities selection for the Fund. The negative screening process will exclude securities with more than 5% of sales in alcohol, tobacco, defense, nuclear, GMO (Genetically Modified Organisms), water bottles, gambling and pornography from the Fund's portfolio. We believe that this negative screen reduces the global universe by about 7% by market capitalization and we do not expect it to have a material impact on portfolio construction or strategy. The positive screening process will identify securities of companies that are fundamentally attractive and that have superior valuation characteristics. In addition, the positive screening process will also include material, fundamental sustainability factors that we believe confirm the fundamental investment case and can enhance the ability to make good investment decisions. The sustainability factors are material extra-financial factors that evaluate the environmental, social and governance performance of companies that along with more traditional financial analytics identify companies that the Advisor believes will provide sustained, long-term value.

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

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9

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.

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.

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. 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.

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). In addition, non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Performance

Risk/return bar chart and table

Total return

Total return January 1 - September 30, 2013: 11.36%
Best quarter during calendar years shown—2Q 2009: 29.94%
Worst quarter during calendar years shown—3Q 2011: (23.88)%

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Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)

1 year

5 years

10 years

Class A (6/30/97)

Return before taxes

11.95

(4.36

6.05

Class C (1/25/02)¹

Return before taxes

16.70

(3.98

)

5.86

Class Y (8/31/93)

Return before taxes	18.80	(3.04	)	6.89
Return after taxes on distributions	17.88	(3.96	)	5.93
Return after taxes on distributions and sale of fund shares	12.72	(2.81	)	5.87
MSCI World Index (net)	15.83	(1.18	)	7.51
MSCI World Free ex USA Index (net)	16.41	(3.43	)	8.60

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.

² Effective October 28, 2013, the Fund's performance benchmark changed from the MSCI World Free ex USA Index (net) to the MSCI World Index (net) in connection with changes to the Fund's investment strategies effective on that date.

Investment advisor

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

Portfolio managers

• Bruno Bertocci, portfolio manager of the Fund since October 2013.

• Shari Gilfillan, portfolio manager of the Fund since October 2013.

Purchase & sale of fund shares

Tax information

Payments to broker/dealers and other financial intermediaries

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UBS U.S. Defensive Equity 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

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		1.00	%		1.00	%		1.00	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses:
Dividend expense and security loan fees for securities sold short		1.31			1.34			1.32
Other²		2.23			2.27			2.19
Total other expenses		3.54			3.61			3.51
Total annual fund operating expenses²		4.79			5.61			4.51
Less management fee waiver/expense reimbursements		1.98			2.02			1.94
Total annual fund operating expenses after management fee waiver/expense reimbursements^2,3		2.81			3.59			2.57

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² "Other expenses" include "Acquired fund fees and expenses," which were less than 0.01% of average net assets of the Fund.

³ 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 dividend expense and security loan fees 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 dividend expense and security loan fees for securities sold short), through the period ending October 28, 2014, 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

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Example

	1 year		3 years		5 years		10 years
Class A	$	818	$	1,746	$	2,677	$	5,021
Class C (assuming sale of all shares at end of period)		462		1,492		2,610		5,343
Class C (assuming no sale of shares)		362		1,492		2,610		5,343
Class Y		260		1,189		2,126		4,511

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 and/or equity-related instruments of US companies. Equity-related instruments include securities or other instruments that derive their value from equity securities and may include such instruments as short sales of equity securities, and futures and options on equity securities. 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. 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, but is not required to, use exchange-traded or over-the-counter ("OTC") derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include futures, options and forward currency agreements. These derivatives may be used for risk management purposes to manage or adjust the risk profile of the Fund. Futures on currencies and forward currency agreements may also be used to hedge against a specific currency. Options may also be used to generate cash flow or enhance returns. In addition, futures on indices may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; or to obtain exposure to certain markets.

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 primarily uses 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. 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.

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13

In addition, the Advisor seeks to manage the Fund's equity risk by utilizing an options-based strategy designed to reduce systematic market risk in the Fund's portfolio in extreme down markets. The Advisor regularly purchases and sells exchange-traded and OTC put and call options on securities and indices in order to limit the Fund's downside equity risk in extreme down markets. This strategy may often result in the Fund purchasing an index put option in combination with writing an index put option or a covered call option. The Advisor combines purchased and written options in this manner in order to customize the type and level of extreme market downside protection and to reduce the cost of such downside protection. This options overlay strategy, while expected to be beneficial in providing downside equity protection in extreme down markets, may also limit the Fund's returns in normal or rising markets. In addition, the strategy is not intended to provide downside protection from normal or modest market declines, and is not a total market hedge. The Advisor believes that this defensive options-based overlay strategy provides the Fund with reduced downside equity risk in extreme down markets in an efficient and price-sensitive manner, while enabling the Fund to participate, in part, in rising equity markets. However, under certain market conditions, the Advisor may, in its own discretion, not hedge equity market risk or employ the options-based strategy.

In employing these investment strategies for the Fund, the Advisor seeks to achieve equity-like returns or better with less than equity-like risk or volatility over a full market cycle. The Advisor does not represent or guarantee that the Fund will meet this goal.

Main risks

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

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 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 the 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, the 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.

Options-based strategy risk: The Fund regularly purchases and sells exchange-traded and OTC put and call options in order to attempt to limit the Fund's downside risk in extreme down markets. The purchase and sale of exchange-traded and over-the-counter put and call options involves costs, which the Fund will incur on a regular basis, and, therefore, these costs may limit the Fund's returns in normal or rising markets. In addition, there is no guarantee that the Advisor's options-based strategy will provide the expected protection in extreme down markets.

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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). In addition, non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Leverage risk associated with financial instruments: The use of financial instruments to increase potential returns, including derivatives used for investment

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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. Also, foreign securities are sometimes less liquid and more difficult to sell and to value than securities of US issuers.

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.

Performance

Risk/return bar chart and table

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.

Total return

Total return January 1 - September 30, 2013: 19.55%
Best quarter during calendar years shown—2Q 2009: 23.05%
Worst quarter during calendar years shown—4Q 2008: (27.94)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			Life of class
Class A (9/26/06)
Return before taxes		6.69	%		(2.54	)%		(0.68	)%
Class C (9/26/06)
Return before taxes		11.10			(2.16	)		(0.53	)
Class Y (9/26/06)
Return before taxes		13.08			(1.17	)		0.45
Return after taxes on distributions		13.02			(1.26	)		0.09
Return after taxes on distributions and sale of fund shares		8.57			(1.01	)		0.24
Russell 1000 Index		16.42			1.92			3.54

Investment advisor

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

Portfolio managers

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

• Ian McIntosh, portfolio manager of the Fund since 2012.

• Mike Lammers, portfolio manager of the Fund since January 2013.

Purchase & sale of fund shares

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15

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

Tax information

Payments to broker/dealers and other financial intermediaries

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UBS U.S. Equity Opportunity 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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.70	%		0.70	%		0.70	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses		0.88			0.92			0.97
Acquired fund fees and expenses		0.01			0.01			0.01
Total annual fund operating expenses²		1.84			2.63			1.68
Less management fee waiver/expense reimbursements		0.63			0.67			0.72
Total annual fund operating expenses after management fee waiver/expense reimbursements^2,3		1.21			1.96			0.96

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

³ 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 28, 2014, do not exceed 1.20% for Class A 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

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Example

	1 year		3 years		5 years		10 years
Class A	$	667	$	1,039	$	1,435	$	2,541
Class C (assuming sale of all shares at end of period)		299		754		1,335		2,914
Class C (assuming no sale of shares)		199		754		1,335		2,914
Class Y		98		459		845		1,927

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 companies. The Fund primarily invests in large capitalization companies, but may invest in companies of any size. The Fund may invest up to 20% of its net assets in securities of foreign companies in both developed and emerging markets. 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.

The Fund may, but is not required to, use exchange-traded or over-the-counter ("OTC") derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include futures on indices or currencies and foward currency agreements, which may be used for risk management purposes to manage or ad-

just the risk profile of the Fund. Futures on currencies and forward currency agreements may also be used to hedge against a specific currency. In addition, futures on indices may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; or to obtain exposure to certain markets.

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 focused portfolio of stocks with attractive relative price/value characteristics. Although the Fund is a diversified fund under the Investment Company Act of 1940, as amended (the "1940 Act"), the Fund employs a focused investment strategy that may result in the Fund investing in a lesser number of issuers than other equity mutual funds.

Main risks

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

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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.

Limited number of issuers risk: The Fund may invest in a limited number of issuers compared to other mutual funds and, consequently, may invest a greater portion of its assets in one or more issuers than other mutual funds. The Fund, therefore, may be more sensitive to a single economic, business, political, regulatory or other occurrence, which may result in greater fluctuation in the value of the Fund's shares and to a greater risk of loss.

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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). In addition, non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

Performance

Risk/return bar chart and table

Total return

Total return January 1 - September 30, 2013: 22.73%
Best quarter during calendar years shown—2Q 2009: 19.76%
Worst quarter during calendar years shown—4Q 2008: (25.45)%

UBS Global Asset Management
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Average annual total returns (figures reflect sales charges)

(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			10 years
Class A (12/7/01)
Return before taxes		8.44	%		(3.79	)%		4.77	%
Class C (12/12/01)¹
Return before taxes		12.72			(3.45	)		4.57
Class Y (6/29/01)
Return before taxes		15.04			(2.43	)		5.65
Return after taxes on distributions		14.83			(3.09	)		4.52
Return after taxes on distributions and sale of fund shares		10.04			(2.20	)		4.84
Russell 1000 Index		16.42			1.92			7.52

Investment advisor

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

Portfolio managers

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

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

• Ian McIntosh, portfolio manager of the Fund since 2012.

• Mike Lammers, portfolio manager of the Fund since October 2013.

Purchase & sale of Fund shares

Tax information

Payments to broker/dealers and other financial intermediaries

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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

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.70	%		0.70	%		0.70	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses²		0.33			0.34			0.28
Total annual fund operating expenses		1.28			2.04			0.98
Less management fee waiver/expense reimbursements		0.08			0.09			0.03
Total annual fund operating expenses after management fee waiver/expense reimbursements³		1.20			1.95			0.95

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

² "Other expenses" include "Acquired fund fees and expenses," which were less than 0.01% of the average net assets of the Fund.

³ 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 28, 2014, do not exceed 1.20% for Class A 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

Example

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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	$	666	$	926	$	1,206	$	2,004
Class C (assuming sale of all shares at end of period)		298		631		1,090		2,362
Class C (assuming no sale of shares)		198		631		1,090		2,362
Class Y		97		309		539		1,199

Portfolio turnover

Principal strategies
Principal investments

The Fund may, but is not required to, use exchange-traded or over-the-counter ("OTC") derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include futures and forward currency agreements. These derivatives may be used for risk management purposes to manage or adjust the risk profile of the Fund. Futures on currencies and forward currency agreements may also be used to hedge against a specific currency. In addition, futures on indices may be

used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; or to obtain exposure to certain markets.

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

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). In addition, non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks as-

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sociated 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.

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. Also, foreign securities are sometimes less liquid and more difficult to sell and to value than securities of US issuers.

Performance

Risk/return bar chart and table

Total return

Total return January 1 - September 30, 2013: 24.25%
Best quarter during calendar years shown—2Q 2009: 19.55%
Worst quarter during calendar years shown—4Q 2008: (26.34)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			10 years
Class A (6/30/97)
Return before taxes		6.58	%		(1.74	)%		5.34	%
Class C (11/13/01)¹
Return before taxes		10.98			(1.34	)		5.15
Class Y (2/22/94)
Return before taxes		13.05			(0.36	)		6.22
Return after taxes on distributions		12.89			(0.65	)		5.75
Return after taxes on distributions and sale of fund shares		8.70			(0.37	)		5.36
Russell 1000 Index		16.42			1.92			7.52

Investment advisor

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

Portfolio managers

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

• Ian McIntosh, portfolio manager of the Fund since 2012.

• Mike Lammers, portfolio manager of the Fund since October 2013.

Purchase & sale of fund shares

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Tax information

Payments to broker/dealers and other financial intermediaries

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UBS U.S. Small Cap Growth Fund
Fund summary

Investment objective

The Fund seeks to provide long-term capital appreciation.

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)		None¹			1.00	%		None
Redemption fee (as a % 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)

	Class A			Class C			Class Y
Management fees		0.85	%		0.85	%		0.85	%
Distribution and/or service (12b-1) fees		0.25			1.00			None
Other expenses		0.45			0.47			0.28
Acquired fund fees and expenses		0.01			0.01			0.01
Total annual fund operating expenses²		1.56			2.33			1.14
Less management fee waiver/expense reimbursements		0.15			0.17			—
Total annual fund operating expenses after management fee waiver/expense reimbursements^2,3,4		1.41			2.16			1.14

¹ Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% CDSC if sold within one year of the purchase date.

³ 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 dividend expense and security loan fees 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 dividend expense and security loan fees for securities sold short), through the period ending October 28, 2014, 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. The fee waiver/expense reimbursement agreement may be terminated by the Fund's Board of Trustees at any time and also will terminate automatically upon the expiration or termination of the Fund's advisory contract with the Advisor. Upon termination of the fee waiver/expense reimbursement agreement, however, the UBS Global AM (Americas)'s three year recoupment rights will survive.

⁴ The total operating expenses have been adjusted to reflect that there will be no recoupment of expenses by the Advisor for the fiscal year ending June 30, 2014. The actual "Total annual fund operating expenses after management fee waiver/expense reimbursements" for Class Y for the fiscal year ended June 30, 2013 was 1.16%. The "management fee waiver/expense reimbursements or (recoupment)" for Class Y's fiscal year ended June 30, 2013 was (0.02%). The fees waived or expenses reimbursed for Class Y have been fully recouped as of June 30, 2013.

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25

Example

	1 year		3 years		5 years		10 years
Class A	$	686	$	1,002	$	1,340	$	2,292
Class C (assuming sale of all shares at end of period)		319		711		1,230		2,653
Class C (assuming no sale of shares)		219		711		1,230		2,653
Class Y		116		362		628		1,386

Portfolio turnover

Principal strategies
Principal investments

The Fund may, but is not required to, use exchange-traded or over-the-counter derivative instruments for risk management purposes or as part of the Fund's investment strategies. The derivatives in which the Fund may invest include futures and forward currency agreements. These derivatives may be used for risk management purposes to manage or adjust the risk profile of the Fund. Futures on currencies and forward currency agreements

may also be used to hedge against a specific currency. In addition, futures on indices may be used for investment (non-hedging) purposes to earn income; to enhance returns; to replace more traditional direct investments; or to obtain exposure to certain markets.

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

Management risk: The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results.

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

UBS Global Asset Management
26

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.

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. When using derivatives for non-hedging purposes, it is possible for the Fund to lose more than the amount it invested in the derivative. The risks of investing in derivative instruments also include market risk, management risk and counterparty risk (which is the risk that a counterparty to a derivative contract is unable or unwilling to meet its financial obligations). In addition, non-exchange traded derivatives may be subject to liquidity risk, credit risk and mispricing or valuation complexity. These derivatives risks are different from, and may be greater than, the risks associated with investing directly in securities and other instruments.

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. Also, foreign securities are sometimes less liquid and more difficult to sell and to value than securities of US issuers.

Performance

Risk/return bar chart and table

Total return

Total return January 1 - September 30, 2013: 38.75%
Best quarter during calendar years shown—2Q 2003: 20.83%
Worst quarter during calendar years shown—4Q 2008: (32.03)%

Average annual total returns (figures reflect sales charges)
(for the periods ended December 31, 2012)

Class (inception date)	1 year			5 years			10 years
Class A (12/31/98)
Return before taxes		9.87	%		2.29	%		8.00	%
Class C (11/19/01)¹
Return before taxes		14.33			2.68			7.80
Class Y (9/30/97)
Return before taxes		16.53			3.72			8.89
Return after taxes on distributions		16.53			3.72			8.57
Return after taxes on distributions and sale of fund shares		10.75			3.20			7.80
Russell 2000 Growth Index		14.59			3.49			9.80

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.

• Samuel Kim, portfolio manager of the Fund since 2011.

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Purchase & sale of fund shares

Tax information

tirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred account.

Payments to broker/dealers and other financial intermediaries

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The UBS Funds

More information about the funds—UBS Equity Long-Short Multi-Strategy Fund

Investment objective, strategies, securities selection and risks

Fund objective

The Fund seeks to preserve and grow capital with low correlation to the equity markets. The Fund's investment objective is non-fundamental and may be changed by the Board of Trustees without shareholder approval.

Principal investment strategies

In order to achieve the Fund's investment objective, the Advisor allocates the Fund's assets among the Fund components, which are managed by portfolio management teams at the Advisor. Each Fund component principally focuses its investments in equity securities.

exposure to certain markets. The Fund may invest in derivatives to the extent permitted by the 1940 Act.

The Fund seeks to maximize total returns by allocating its assets among the Fund components. Each Fund component is unique in terms of the source of its investment insight, its geographic focus, or both. A Fund component will purchase securities long that it believes will outperform the market, other Fund securities or both, and sell securities short that are expected to underperform the market, other Fund securities or both. The Fund engages in its long/short strategies in order to generate returns with low correlations to equity markets.

In deciding the Fund's allocation to each Fund component, the Advisor utilizes analytical tools that enable the Advisor to view the entire investment portfolio of the Fund across all underlying components in order to best assess the allocation of Fund assets among these components based on alpha potential and contribution to volatility and to monitor the impact of individual stock positions, both long and short positions, on the Fund's entire portfolio.

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The UBS Funds

More information about the funds—UBS Equity Long-Short Multi-Strategy Fund

assets in cash when the Fund maintains a net short equity market position. By taking both long and short positions, the Fund seeks to provide some protection in down markets when compared to a fund that takes only long positions.

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, 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.

The Fund may also invest in cash or cash equivalent instruments. When market conditions warrant, the Fund may make substantial temporary defensive investments in cash equivalents which may affect its ability to pursue its investment objective.

The Fund may lend its portfolio securities to generate additional income.

Securities selection

Each Fund component primarily utilizes fundamental valuation, quantitative research or a combination of both to construct its portfolio.

Fundamental Valuation. The investment decisions with respect to certain Fund components are based upon price/value discrepancies as identified by the Advisor's fundamental valuation process.

In selecting securities 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. In selecting securities to be held as long positions in the Fund, the Advisor will select a security whose fundamental value it estimates to be greater than its market value at any given time. In selecting securities to be held as short positions in the Fund, the Advisor will select a security whose fundamental value it estimates to be less 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 long and short stock positions across industries and countries with meaningful relative price/value discrepancies.

Quantitative Research. A portion of the Advisor's investment decisions with respect to the Fund's portfolio are based upon investment opportunities generated by quantitative research techniques.

The Advisor's quantitative discipline is predicated on the belief that there are many frequently reoccurring

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The UBS Funds

More information about the funds—UBS Equity Long-Short Multi-Strategy Fund

market opportunities that can be identified and systematically exploited to provide the Fund with consistent excess returns. In identifying these market opportunities, the Advisor seeks to systematically rank securities as to their relative attractiveness based on a specific set of factors. The Advisor uses a multi-factor model to evaluate stocks on a combined matrix of five dimensions: valuation, growth, capital use, quality and market behavior while acknowledging distinct factors can drive performance in different equity markets and in various sectors. The measures, together with the securities' respective risk attributions, form the building blocks of the targeted portfolio.

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 risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results. The Advisor may be incorrect in its assessment of the value of securities or assessment of market trends, which can result in losses to the Fund. Also, in some cases, derivatives or other investments may be unavailable or the Advisor may choose not to use them under market conditions when their use, in hindsight, may be determined to have been beneficial to the Fund. In addition, 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.

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 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.

• Foreign investing risks—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. In addition, 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.

• Multi-strategy risk—The risk that the Fund may allocate assets to a Fund component that underperforms other Fund components. For example, the Fund may be overweighted in quantitatively oriented strategies when such strategy types are being outperformed by more fundamentally-oriented strategies.

• 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.

• Derivatives risk—Derivatives involve risks different from, and possibly greater than, the risks associated with investing directly in securities and other

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The UBS Funds

More information about the funds—UBS Equity Long-Short Multi-Strategy Fund

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 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 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 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 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.

• Leverage risk—The 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 borrows money to purchase securities and its investments decrease in value, the 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 will be less than if borrowing were not used. Certain derivatives, includ-

ing total return swaps, 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 derivatives.

• Limited capitalization risk—The risk that investments in small and intermediate capitalization companies may be more volatile than investments in larger companies, as small and intermediate 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.

• 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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The UBS Funds

More information about the funds—UBS Equity Long-Short Multi-Strategy Fund

("CPO") under the Commodity Exchange Act ("CEA") and the rules of the Commodity Futures Trading Commission ("CFTC") and, therefore, is not subject to CFTC registration or regulation as a CPO. In addition, the investment advisor is relying upon a related exclusion from the definition of "commodity trading advisor" under the CEA and the rules of the CFTC.

and swaps, which in turn include non-deliverable forward currency agreements, as further described in the Fund's SAI. Because the investment advisor and the Fund intend to comply with the terms of the CPO exclusion at this time, the Fund will limit its investments in these types of instruments. The Fund is not intended as a vehicle for trading in the commodity futures, commodity options or swaps markets. The CFTC has neither reviewed nor approved the investment advisor's reliance on these exclusions, or the Fund, its investment strategies or this prospectus.

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The UBS Funds

More information about the funds—UBS Global Sustainable 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

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 currency agreements, 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 (except for forward currency agreements), or to obtain exposure to certain markets (except for forward currency agreements). The

Fund also may use futures contracts on equity securities and indices to gain market exposure on its uninvested cash.

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

The Advisor's investment decisions are based upon price/value discrepancies as identified by the Advisor's fundamental valuation process.

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The UBS Funds

More information about the funds—UBS Global Sustainable Equity Fund

positive screening process will also include material, fundamental sustainability factors that we believe confirm the fundamental investment case and can enhance the ability to make good investment decisions. The sustainability factors are material extra-financial factors that evaluate the environmental, social and governance performance of companies that along with more traditional financial analytics identify companies that the Advisor believes will provide sustained, long-term value.

The Fund may invest in cash or cash equivalent instruments, including shares of an affiliated investment company and investments in index futures that are designed to provide exposure to a particular currency market. 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.

The Fund may lend its portfolio securities to generate additional income.

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 its proportional share of the operating expenses associated with such investments.

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:

• 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. In addition, 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 Sustainable Equity Fund

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.

• Sustainability factor risk—The Fund's sustainability factors used in its investment process will likely make the Fund perform differently from a fund that relies solely or primarily on financial metrics. The sustainability factors may cause the Fund's industry allocation to deviate from that of funds without these considerations and of conventional benchmarks.

• Securities lending risk—Securities lending involves the lending of portfolio securities owned by the Fund

to qualified broker-dealers and financial institutions who provide collateral to the Fund in connection with these loans. Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Fund may lose money and there may be a delay in recovering the loaned securities. The Fund also could lose money if it does not recover the securities and/or the value of the collateral falls, including the value of investments made with cash collateral.

Other information

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36

The UBS Funds

More information about the fund—UBS U.S. Defensive 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, 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 and/or equity-related instruments of US companies. Equity-related instruments include securities or other instruments that derive their value from equity securities and may include such instruments as short sales of equity securities, and futures and options on equity securities. 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 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 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

In constructing the Fund's portfolio, the Advisor primarily uses 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. 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.

In addition, the Advisor seeks to manage the Fund's equity risk in extreme down markets by utilizing an options-based strategy designed to reduce systematic market risk in the Fund's portfolio. The Advisor regularly purchases and sells exchange-traded and over-the-counter put and call options on securities and indices in

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The UBS Funds

More information about the fund—UBS U.S. Defensive Equity Fund

order to limit the Fund's downside equity risk in extreme down markets. This strategy may often result in the Fund purchasing an index put option in combination with writing an index put option or a covered call option. The Advisor combines purchased and written options in this manner in order to customize the type and level of extreme market downside protection and to reduce the cost of such downside protection. This options overlay strategy, while expected to be beneficial in providing downside equity protection in extreme down markets, may also limit the Fund's returns in normal or rising markets. In addition, the strategy is not intended to provide downside protection from normal or modest market declines, and is not a total market hedge. The Advisor believes that this defensive options-based overlay strategy provides the Fund with reduced downside equity risk in extreme down markets in an efficient and price-sensitive manner, while enabling the Fund to participate, in part, in rising equity markets. However, under certain market conditions, the Advisor may, in its own discretion, not hedge equity market risk or employ the options-based strategy.

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.

The Fund may lend its portfolio securities to generate additional income.

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:

• 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

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The UBS Funds

More information about the fund—UBS U.S. Defensive Equity Fund

single issuer, industry or section of the economy, or it may affect the market as a whole.

• Management risk—The risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results. The Advisor may be incorrect in its assessment of the value of securities or assessment of market trends, which can result in losses to the Fund. Also, in some cases, derivatives or other investments may be unavailable or the Advisor may choose not to use them under market conditions when their use, in hindsight, may be determined to have been beneficial to the Fund. In addition, 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.

• 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 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 the 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, the 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.

• Options-based strategy risk—The Fund regularly purchases and sells exchange-traded and OTC put and call options in order to attempt to limit the Fund's downside risk in extreme down markets. The purchase and sale of exchange-traded and over-the-counter put and call options involves costs, which the Fund will incur on a regular basis, and, therefore, these costs may limit the Fund's returns in normal or rising markets. In addition, there is no guarantee that the Advisor's options-based strategy will provide the expected protection in extreme down markets.

• 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

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The UBS Funds

More information about the fund—UBS U.S. Defensive Equity Fund

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.

• Writing call options—The Fund may write covered call options (in which the Fund owns the corresponding amount of the underlying instrument, such as specific securities) or uncovered call options (in which the Fund maintains assets for the term of the option having a value equal to the fluctuating market value of the optioned basket of securities, such as an index, marked-to-market daily). Writing a call generates cash flow in the form of the premium paid by the option buyer. If the price of the underlying security or basket of securities remains stable or increases, then the writer will be able to keep this cash flow as a profit, even though the profit may have been higher if no call were written. If the price of the underlying security or basket of securities declines, then the net position will likely lose money.

• Writing put options—The Fund may write put options (in which the Fund maintains assets in an amount not less than fluctuating market value of the exercise price of the option, marked-to-market daily at all times during the option period). In writing a put option, the Fund bears the risk that if the underlying instrument's price falls, the Fund could suffer a loss (less any premium received by the Fund for the option) because it would be required to pay a higher price for the underlying instrument than what the current market price of the instrument would be at the time of exercise of the option.

• 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.

• 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.

• 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.

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The UBS Funds

More information about the fund—UBS U.S. Defensive Equity Fund

value of the collateral falls, including the value of investments made with cash collateral.

Other information

UBS Global Asset Management
41

The UBS Funds

More information about the funds—UBS U.S. Equity Opportunity 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 companies. The Fund primarily invests in large capitalization companies, but may invest in companies of any size. The Fund may invest up to 20% of its net assets in securities of foreign companies in both developed and emerging markets. 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, dividend-paying securities, common stock, preferred stock, shares of investment companies, convertible securities, warrants and rights.

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 and forward currency agreements. 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.

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 focused portfolio of stocks with attractive relative price/value characteristics. Although the Fund is a diversified fund under the 1940 Act, the Fund employs a focused investment strategy that may result in the Fund investing in a lesser number of issuers than other equity mutual funds.

The Fund may lend its portfolio securities to generate additional income.

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. Equity Opportunity Fund

value of securities or assessment of market trends, which can result in losses to the Fund.

• 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.

• Limited number of issuers risk—The Fund may invest in a limited number of issuers compared to other mutual funds and, consequently, may invest a greater portion of its assets in one or more issuers than other mutual funds. The Fund, therefore, may be more sensitive to a single economic, business, political, regulatory or other occurrence, which may result in greater fluctuation in the value of the Fund's shares and to a greater risk of loss.

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.

UBS Global Asset Management
43

The UBS Funds

More information about the funds—UBS U.S. Equity Opportunity Fund

Other information

UBS Global Asset Management
44

The UBS Funds

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. 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.

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 and foreign currency agreements. 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.

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 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.

The Fund may lend its portfolio securities to generate additional income.

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 risk that the investment strategies, techniques and risk analyses employed by the Advisor may not produce the desired results. The

UBS Global Asset Management
45

The UBS Funds

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

Advisor may be incorrect in its assessment of the value of securities or assessment of market trends, which can result in losses to the Fund.

• 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.

• 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 sell and to value than securities of US issuers.

Other information

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46

The UBS Funds

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

Fund intend to comply with the terms of the CPO exclusion at this time, the Fund will limit its investments in these types of instruments. The Fund is not intended as a vehicle for trading in the commodity futures, commodity options or swaps markets. The CFTC has neither reviewed nor approved the investment advisor's reliance on these exclusions, or the Fund, its investment strategies or this prospectus.

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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.

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 and forward currency agreements. 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.

Under certain market conditions, the Fund may invest in companies at the time of their IPO.

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 of US small capitalization companies.

Securities selection

The Fund may lend its portfolio securities to generate additional income.

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 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

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The UBS Funds

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

effect on their market price, tending to make prices rise more in response to buying demand and fall more in response to selling pressure.

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.

• 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.

Other information

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The UBS Funds

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

registration or regulation as a CPO. In addition, the investment advisor is relying upon a related exclusion from the definition of CTA under the CEA and the rules of the CFTC.

forward currency agreements, as further described in the Fund's SAI. Because the investment advisor and the Fund intend to comply with the terms of the CPO exclusion at this time, the Fund will limit its investments in these types of instruments. The Fund is not intended as a vehicle for trading in the commodity futures, commodity options or swaps markets. The CFTC has neither reviewed nor approved the investment advisor's reliance on these exclusions, or the Fund, its investment strategies or this prospectus.

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The UBS Funds

Managing your fund account

Flexible pricing

Each Fund offers three classes of shares—Class A, Class C and Class Y. 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 over¹			None			None			May pay up to 1.00²

UBS Global Asset Management
51

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 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 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 Asset Management (US) Inc. ("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.