Commodities

ETRACS CMCI Agriculture Total Return

ETRACS CMCI Agriculture Total Return is designed to track the performance of the UBS Bloomberg CMCI Agriculture Index Total Return (the "Index"), less investor fees. The Index measures the collateralized returns from a basket of 10 futures contracts representing the agricultural sector. The commodity futures contracts are diversified across three constant maturities from three months up to one year.

The Index was created in January 2007 and has no performance history prior to that date.

Market data
Historical returns
Target weights

Index comparisons
Maturity weights
Risk considerations

Profile

Name	ETRACS CMCI Agriculture Total Return
Underlying Product	UBS Bloomberg CMCI Agriculture Total Return
Issuer	UBS AG
Ticker Symbol	UAG
CUSIP	902641760
Primary Exchange	NYSE Arca
Initial Trade Date	April 01, 2008
Maturity Date	April 05, 2038
Fee Amount (%)*	0.65% per annum accrued on a daily basis

* As of December 31, 2011. See 'Risk considerations' as well as the 'Important legal information specific to ETRACS ETNs' link below for more information

Market data

Closing Price	26.79	Volume	9,313
Net Change	0.02	20 Day Volume Average	15,755.15
% Change	0.00	Shares Outstanding	488,000
High (52 week)	33.00	Market Cap	13,073,520.66
Low (52 week)	25.16	Daily Indicative Value	26.80
Indicative Intra-Month Leverage Factor	1.03
Updated on: May 20, 2013

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Historical returns

	Total return*	Annualized return*	6 Months	1 Year	3 Years
CMCI Agriculture Total Return	57.78%	9.55%	-6.84%	-8.68%	14.13%
S&P GSCI® Agriculture Total Return	6.95%	1.35%	-7.98%	-15.87%	5.43%
DJ-UBS Agriculture Total Return	27.08%	4.91%	-7.79%	-14.35%	10.49%
Rogers Agriculture Total Return	2.72%	0.54%	-9.44%	-15.49%	7.01%

*Since Index inception

Historical results for the period from January 1, 2007 through December 31, 2011.

Source: UBS Investment Bank, publicly available data.

Returns shown for periods less than a year are total returns and returns for periods greater than a year are annualized returns. Historical info presented as of December 31, 2011 and is furnished as a matter of information only. Historical performance of the Index is not an indication of future performance. Future performance of the Index may different significantly from historical performance, either positively or negatively.

The ETRACS ETNs are subject to investor fees. As a result, the return on the ETNs will always be lower than the total return on a direct investment in the Index or the Index constituents.

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Target weights

SRW Wheat	12.75%
Corn	18.06%
Soybeans	19.29%
Soybean Meal	5.28%
Soybean Oil	5.48%
Sugar #11	18.32%
Sugar #5	7.74%
Cocoa	2.93%
Coffee "C" Arabica	4.58%
Cotton	5.56%
Total	100.00%
Updated on: December 31, 2011

The Index is rebalanced monthly in order to bring the components back into line with their Target weights.

Source: UBS Investment Bank.

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Sector weightings

Commodity sector target weights

Source: UBS Investment Bank, as of December 31, 2011

Index comparisons

Source: UBS Investment Bank, CMCI Advisory Committee.

The graph above illustrates historical returns of the Index from January 1, 2007 through December 31, 2011 in comparison with three traditional commodities indices: the S&P Goldman Sachs Commodity Index (GSCI®) Agriculture Index Total Return, Dow Jones-UBS Agriculture Total Return Index^SM and Rogers International Commodity Index® Agriculture Total Return.

The ETRACS ETNs are subject to investor fees. As a result, the return on the ETNs will always be lower than the total return on a direct investment in the Index or the Index constituents.

Historical performance of the Index is not an indication of future performance. Future performance of the Index may differ significantly from historical performance, either positively or negatively.

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Maturity weights

Constant maturity weights of Future Contracts

Source: UBS Investment Bank, CMCI Advisory Committee, as of December 31, 2011

Weights across maturities are determined based on the relative liquidity of the underlying futures contracts.

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Risk considerations

An investment in the ETRACS ETNs involves risks. Selected risks are summarized here, but we urge you to read the more detailed explanation of risks described in the "Risk Factors" section of the prospectus supplement for the ETRACS ETNs (the "ETRACS Prospectus"). Capitalized terms used below but not defined herein shall have the meanings attributed to them in the ETRACS Prospectus.

You may lose some or all of your principal — The ETRACS ETNs are fully exposed to any decline in the level of the Index. You will lose some or all of your principal if the Index Ending Level is below the Index Starting Level or if the Index Ending Level is not sufficiently above the Index Starting Level to offset the cumulative effect of the Fee Amount applicable to your ETRACS ETNs. The Index is volatile and subject to a variety of market forces, some of which are described below. The Index Ending Level is therefore unpredictable. Commodity prices may change unpredictably, affecting the prices of the commodities underlying the exchange-traded futures contracts comprising the Index and, consequently, the value of the ETRACS ETNs.
Limited performance history — The payment at maturity, call or early redemption on the ETRACS ETNs is linked to the performance of the Index, which was introduced in January 2007. As a result, the Index has a limited performance history, and it is uncertain how the Index will perform. In addition, while the Index is intended to represent a benchmark for commodities investments in the livestock sector, the methodology used to achieve this benchmarking has a limited history in its application. It therefore cannot be determined at this point whether, or the extent to which, the Index will serve as an adequate benchmark for the performance of the commodities market in the livestock sector.
Market risk — The return on the ETRACS ETNs, which may be positive or negative, is directly linked to the performance of the Index, which is based on a variety of market and economic factors, interest rates in the markets and economic, financial, political, regulatory, judicial or other events that affect the markets generally.
Credit of UBS — The ETRACS ETNs are senior unsecured debt obligations of the issuer, UBS, and are not, either directly or indirectly, an obligation of any third party. Any payment to be made on the ETRACS ETNs depends on the ability of UBS to satisfy its obligations as they come due. As a result, the actual and perceived creditworthiness of UBS may affect the market value of the ETRACS ETNs and, in the event UBS were to default on its obligations, you may not receive any amounts owed to you under the terms of the ETRACS ETNs.
Potential over-concentration in particular commodity sectors — The commodities underlying the futures contracts included in the Index are concentrated in a single sector, agriculture. Investment in the ETRACS ETNs will increase your portfolio's exposure to fluctuations in the agriculture commodity sector.
A trading market for the ETRACS ETNs may not develop — Although the ETRACS ETNs are listed on NYSE Arca, a trading market for the ETRACS ETNs may not develop. Certain affiliates of UBS may engage in limited purchase and resale transactions in the ETRACS ETNs, although they are not required to and may stop at any time. We are not required to maintain any listing of the ETRACS ETNs on NYSE Arca or any other exchange.
No interest payments from the ETRACS ETNs — You will not receive any interest payments on the ETRACS ETNs.
No direct exposure to fluctuations in foreign exchange rates — The value of your ETRACS ETNs will not be adjusted to compensate for exchange rate fluctuations between the U.S. dollar and each of the other currencies in which the futures contracts composing the Index are quoted. Therefore, if the applicable currencies appreciate or depreciate relative to the U.S. dollar over the term of the ETRACS ETNs, you will not receive any additional payment or incur any reduction in the payment at maturity, call or early redemption.
Minimum Redemption Amount — You must elect to redeem at least 50,000 ETRACS ETNs for UBS to repurchase your ETRACS ETNs, unless we determine otherwise or your broker or other financial intermediary bundles your ETRACS ETNs for redemption with those of other investors to reach this minimum requirement.
Uncertain tax treatment — Significant aspects of the tax treatment of the ETRACS ETNs are uncertain. You should consult your own tax advisor about your own tax situation.
UBS' Contingent Call Right — UBS may elect to redeem all outstanding ETRACS ETNs if the aggregate principal amount of ETRACS ETNs outstanding is less than $10,000,000 as described under ''Specific Terms of the Securities — UBS' Contingent Call Right'' in the ETRACS Prospectus.

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