iPath<sup class="product">®</sup> US Treasury 10-year Bear ETN

iPath^® US Treasury 10-year Bear ETN (DTYS)

The iPath^® US Treasury 10-year Bear Exchange Traded Note is linked inversely to the performance of the Barclays Capital 10Y US Treasury Futures Targeted Exposure Index™. The index seeks to produce returns that track movements in response to an increase or decrease, as applicable, in the yields available to investors purchasing 10-year U.S. Treasury notes. The level of the index is designed to increase in response to a decrease in 10-year Treasury note yields and to decrease in response to an increase in 10-year Treasury note yields. To accomplish this objective, the performance of the index tracks the returns of a notional investment in a weighted "long" position in relation to 10-year Treasury futures contracts, as traded on the Chicago Board of Trade.

The iPath^® US Treasury 10-year Bear ETN employs an index multiplier that provides the investor at maturity or upon redemption a participation rate of $0.10 gain or loss per each 1.00 point decrease or increase, respectively, in the level of the index. For purposes of calculating the closing indicative note value on a given day, the index multiplier is multiplied by the daily index performance, which is added to the daily interest that accrued from a notional investment of the value of the ETN at the 28-day U.S. Treasury Bill rate, from which all applicable costs and fees are deducted.

Overview
Index Composition

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Profile
Returns
Terms

Product Data (as of 02/02/2012)

Daily Indicative Value†	$30.81
Shares Outstanding	1,635,826
Market Capitalization*	$50,399,799

† Source: Barclays Bank PLC. The "Daily Indicative value" is historical, does not guarantee future performance, and is shown for illustrative purposes only. The issuer or an affiliate will provide the official Redemption Value to the redeeming holder in advance of any redemption. See additional information below.

* Market Capitalization = Daily Indicative Value x Shares Outstanding

Market Data (as of 02/02/2012)

Closing Price	$30.80
Net Change	-$0.17
% Change	-0.55%

High	$31.05
Low	$30.80
Volume	700
20-Day Volume Average	15,050

Profile

Primary Exchange	NYSE Arca
Ticker	DTYS
Intraday Indicative Value Ticker	DTYS.IV
Bloomberg ETN Keystroke	DTYS<EQUITY><GO>
Bloomberg Index Ticker	BXIITETY

Investor Fee	0.75%¹
Index Multiplier	-$0.10
CUSIP	06740L451
Inception Date	08/09/2010
Maturity Date	08/13/2020

Returns (as of 01/31/2012)

	1 mo.	3 mo.	6 mo.	YTD	1 Yr.	3 Yr.	5 Yr.	10 Yr.	Since Note Incept.
Index	1.31%	4.75%	10.96%	1.31%	23.89%	N/A	N/A	N/A	13.39%
iPath Indicative Value Return	-4.54%	-14.24%	-26.55%	-4.54%	-41.43%	N/A	N/A	N/A	-28.03%

Market Price Returns (as of 01/31/2012)

	1 mo.	3 mo.	6 mo.	YTD	1 Yr.	3 Yr.	5 Yr.	10 Yr.	Since Note Incept.
iPath Market Price Return	-4.89%	-13.50%	-26.52%	-4.89%	-41.64%	N/A	N/A	N/A	-28.17%

Source: BlackRock. Period ending 01/31/2012.

The performance quoted represents past performance and does not guarantee future results. Investment return and principal value of an investment will fluctuate so that an investment, when sold or redeemed may be worth more or less than the original cost. Current performance may be lower or higher than the performance quoted. See additional market price information.

Cumulative Daily Index Returns (Daily Returns) (as of 02/02/2012)

Source: BlackRock, Inc.

Index Returns

Index Returns measure returns over the relevant period using the change in the index level expressed as a percentage from the beginning of the relevant period to the end of the relevant period. Index Returns are for illustrative purposes only and do not represent actual iPath ETN performance. Index Returns do not reflect any management fees, transaction costs, or expenses which would reduce your actual return. Indexes are unmanaged and one cannot invest directly in an index.

Market Returns

Market Returns measure returns over the relevant period using the change in the midpoint of the bid/ask spread at 4:00 pm Eastern time (or the last midpoint of the bid/ask spread prior to 4:00 pm Eastern time) expressed as a percentage from the beginning of the relevant period to the end of the relevant period and do not represent the returns you would receive if you traded at other times. Market Returns do not account for brokerage commissions, which will reduce actual returns.

Indicative Value Returns

The Indicative Value Returns measure the returns over the relevant period using the change in the Indicative Value expressed as a percentage from the beginning of the relevant period to the end of the relevant period and reflect the current investor fee.

Redemption Value

Subject to the notification requirements described in the prospectus, Securities may be redeemed on any redemption date during the term of the Securities. If Securities are redeemed, they will receive a cash payment per Security equal to the closing indicative note value on the applicable valuation date. At least 50,000 units³ of a particular iPath ETN must be redeemed at one time in order to exercise the right to redeem Securities on any Redemption Date.

A Redemption Date is the third business day following each valuation date. Valuation Date means each business day during the term of the Securities inclusive or, if such date is not a trading day, the next succeeding trading day, not to exceed five business days.

Indicative Value

An intraday "indicative value" meant to approximate the intrinsic economic value of each iPath ETN is calculated and published by Bloomberg or a successor under the respective ticker symbols listed above. Additionally, the Daily Indicative value of each iPath ETN is calculated and posted each trading day to the Indicative Values table above. In connection with iPath ETNs, the term "indicative value" refers to the value at a given time determined based on the following equation:

Indicative Value = Closing Indicative Note Value + Intraday Index Performance Amount; provided that if such calculation results in a negative value, the intraday indicative note value will be $0;

Where:

Principal Amount per Unit = $100

Closing Indicative Note Value = The closing indicative note value of the iPath ETN on the calendar day immediately preceding the trading day on which the Indicative Value is calculated.

Intraday Index Performance Amount = (1) The Index Multiplier times (2) the difference of (a) the most recently published level of the Index on such trading day minus (b) the closing level of the Index on the index business day immediately preceding such trading day;.

Index Multiplier = The Index Multiplier as described in the pricing supplement.

The indicative value calculation is provided for reference purposes only. It is not intended as a price or quotation, or as an offer or solicitation for the purchase, sale, redemption or termination of the iPath ETNs, nor do they reflect hedging or transaction costs, credit considerations, market liquidity, or bid-offer spreads. Furthermore, as the intraday indicative note value is calculated using the closing indicative note value on the immediately preceding calendar day, the intraday indicative note value published at any time during a given trading day will not reflect the daily interest or the daily investor fee that may have accrued over the course of such trading day. Published index levels from the sponsors of the indices underlying each iPath ETN may occasionally be subject to delay or postponement. Any such delays or postponements will affect the current index level and therefore the indicative value of each iPath ETN. For this reason and others, the actual trading price of the iPath ETN may be different from their indicative value.

¹ The investor fee on the inception date of the ETNs will equal zero. On each subsequent calendar day until maturity or early redemption of the ETNs, the investor fee will equal the Yearly Fee (0.75%) times the closing indicative note value of the ETNs on the immediately preceding calendar day, divided by 365. In addition, on each "roll day" for the relevant Treasury futures contracts underlying the Index, $0.005 will be charged and deducted from the closing indicative note value of each ETN. See the applicable prospectus for more details.

² The effect of the index multiplier is to adjust the rate at which the value of the ETN changes in response to change in the underlying Index level. As a result of the index multiplier, the ETN will record a $0.10 gain or loss for every 1.00 point increase or decrease, respectively, in the level of the Index.

³ The issuer may from time to time in its sole discretion reduce, in part or in whole, the minimum redemption amount of 50,000 units, applicable to all holders, at the time the reduction becomes effective.

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Privacy Policy

Effective date: May 10, 2006

INTRODUCTION

This Privacy Policy applies to information that visitors transmit to Barclays Bank PLC and/or its affiliates (together, "BBPLC") through this iPath ETN website (the "Site").

BBPLC is committed to your privacy. This Privacy Policy is designed to inform you of what information we collect from you on this Site and how we and our affiliates handle that information.

To put it simply: We will not sell non-public, personal information we collect about you on this Site to anyone. We will store the information using generally accepted encryption and data-storage technology. And we will give you the ability to opt out of our using the information to send you separate online marketing and advertising.

Please direct any questions to ipathetn@blackrock.com or call 1-877-764-7284.

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This Privacy Policy explains the Site's processing and storage practices in the United States for personal information transmitted through the Site. Visitors subject to the jurisdiction of other countries must not submit information through this Site, and by doing so waive any and all liability BBPLC may have to them in connection with such information. By browsing the Site and communicating electronically with us, Site visitors acknowledge that we are processing and storing their personal information in the United States under US privacy standards.

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Reviewing your information and requesting changes to your Profile

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MORE ON PRIVACY

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Security

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CHANGES TO THIS POLICY

This Privacy Policy may be updated from time to time as our services change and grow. We will indicate any such changes at the privacy link at the bottom of our home page, and your continued use of the Site will signify your acknowledgement of any new terms. The most current version of the Privacy Policy can be found by visiting the privacy link at http://www.ipathetn.com/privacypolicy.

CONTACT

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