10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2011

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission File Number: 001-32726

POWERSHARES DB COMMODITY INDEX TRACKING FUND

(Exact name of Registrant as specified in its charter)

Delaware	32-6042243
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

c/o DB Commodity Services LLC 60 Wall Street New York, New York	10005
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code: (212) 250-5883

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange on Which Registered
Common Units of Beneficial Interest	NYSE Arca, Inc.

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definition of “accelerated filer,” “large accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer  x	Accelerated Filer  ¨
Non-Accelerated Filer  ¨  (Do not check if a smaller reporting company)	Smaller reporting company  ¨

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

State the market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the Registrant’s most recently completed second fiscal quarter. $5,988,928,000

Number of Common Units of Beneficial Interest outstanding as of February 17, 2012: 216,400,000

TABLE OF CONTENTS

		Page
PART I			1
ITEM 1.	BUSINESS		1
ITEM 1A.	RISK FACTORS		7
ITEM 1B.	UNRESOLVED STAFF COMMENTS		17
ITEM 2.	PROPERTIES		17
ITEM 3.	LEGAL PROCEEDINGS		17
ITEM 4.	MINE SAFETY DISCLOSURES		17
PART II			18
ITEM 5.	MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES		18
ITEM 6.	SELECTED FINANCIAL DATA		19
ITEM 7.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS		20
ITEM 7A.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK		33
ITEM 8.	FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA		37
ITEM 9.	CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE		55
ITEM 9A.	CONTROLS AND PROCEDURES		56
ITEM 9B.	OTHER INFORMATION		56
PART III			57
ITEM 10.	DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT AND CORPORATE GOVERNANCE		57
ITEM 11.	EXECUTIVE COMPENSATION		58
ITEM 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS		58
ITEM 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE		58
ITEM 14.	PRINCIPAL ACCOUNTANT FEES AND SERVICES		59
PART IV			60
ITEM 15.	EXHIBITS AND FINANCIAL STATEMENT SCHEDULES		60

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING INFORMATION

This report includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), that involve substantial risks and uncertainties. These forward-looking statements are based on the registrant’s current expectations, estimates and projections about the registrant’s business and industry and its beliefs and assumptions about future events. These forward-looking statements are subject to known and unknown risks, uncertainties and assumptions about the registrant that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. In some cases, investors can identify forward-looking statements by terminology such as “may,” “should,” “could,” “would,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “continue,” or the negative of such terms or other similar expressions. Factors that might cause or contribute to such a discrepancy include, but are not limited to, those described in this report, including in “Item 1A. Risk Factors”, and our other Securities and Exchange Commission (the “SEC”) filings.

PART I

ITEM 1. BUSINESS

Organization

PowerShares DB Commodity Index Tracking Fund (the “Fund”) was formed as a Delaware statutory trust on May 23, 2005. DB Commodity Services LLC, a Delaware limited liability company (“DBCS” or the “Managing Owner”), seeded the Fund with a capital contribution of $1,000 in exchange for 40 General Shares of the Fund. The fiscal year end of the Fund is December 31^st. The term of the Fund is perpetual (unless terminated earlier in certain circumstances) as provided for in the Second Amended and Restated Declaration of Trust and Trust Agreement of the Fund (the “Trust Agreement”).

The Fund offers common units of beneficial interest (the “Shares”) only to certain eligible financial institutions (the “Authorized Participants”) in one or more blocks of 200,000 Shares, called a Basket. The proceeds from the offering of Shares are invested in the Fund. The Fund commenced trading on the American Stock Exchange (now known as the NYSE Alternext US LLC (the “NYSE Alternext”)) on February 3, 2006 and, as of November 25, 2008, is listed on the NYSE Arca, Inc. (the “NYSE Arca”).

Prior to the close of business on December 31, 2010, the Fund invested substantially all of its assets in the DB Commodity Index Tracking Master Fund (the “Master Fund”). After the determination of the net asset value of the Master Fund on December 31, 2010, the Master Fund transferred and distributed all of its assets and liabilities to the Fund and terminated. Effective January 1, 2011, the reorganized Fund has performed all of the necessary functions in order to continue normal Fund operations. The collapse of the master-feeder structure had no effect on the operations or processes of the Fund. All reference to historical results of the Fund include results of the Master Fund where the context requires.

Fund Investment Overview

The Fund seeks to track changes, whether positive or negative, in the level of the DBIQ Optimum Yield Diversified Commodity Index Excess Return^TM (the “Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The Index is intended to reflect the change in market value of certain commodities. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the “Index Commodities”).

From May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The commodities comprising the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn and Wheat. From October 19, 2009 to December 31, 2010, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Excess Return™ (the “Interim Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. After December 31, 2010, the Fund commenced tracking the Index. The Fund’s Interim Index is identical to the Index except with respect to the following non-substantive changes: (i) name of Index, and (ii) inception date of Index for Commodity Futures Trading Commission (the “CFTC”) purposes. Except as provided in the immediately preceding sentence, all prior underlying formulae, data (e.g., closing levels, measure of volatility, all other numerical statistics and measures) and all other characteristics (e.g., Base Date, Index Sponsor, rolling, etc.) with respect to the Interim Index are identical to the Index. The Fund also holds United States Treasury Obligations and other high credit quality short-term fixed income securities for deposit with the Fund’s Commodity Broker as margin.

The Commodity Futures Trading Commission (the “CFTC”) and/or commodity exchanges, as applicable, impose position limits on market participants trading in certain commodities included in the Index. The Index is comprised of futures contracts on each of the Index Commodities that expire in a specific month and trade on a specific exchange (the “Index Contracts”). As disclosed in the Fund’s Prospectus, if the Managing Owner determines in its commercially reasonable judgment that it has become impracticable or inefficient for any reason for the Fund to gain full or partial exposure to any Index Commodity by investing in a specific Index Contract that is a part of the Index, the Fund may invest in a futures contract referencing the particular Index Commodity other than the Index Contract or, in the alternative, invest in other futures contracts not based on the particular Index Commodity if, in the commercially reasonable judgment of the Managing Owner, such futures contracts tend to exhibit trading prices that correlate with such Index Commodity. Because the Fund is approaching or has reached position limits with respect to certain futures contracts comprising the Index, the Fund has commenced investing in other futures contracts based on commodities that comprise the Fund’s Index and in futures contracts based

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on commodities other than commodities that comprise the Fund’s Index. Please see http://dbfunds.db.com/dbc/weights.aspx with respect to the most recently available weighted composition of the Fund and http://dbfunds.db.com/dbc/index.aspx with respect to the composition of the Index on the Base Date.

The Fund does not employ leverage. As of December 31, 2011 and 2010, the Fund had $5,460,554,245 (or 99.80%) and $5,110,292,129 (or 100%), respectively, of its holdings of cash, United States Treasury Obligations and unrealized appreciation/depreciation of futures contracts on deposit with its Commodity Broker. Of this, $425,657,099 (or 7.80%) and $330,490,820 (or 6.47%), of the Fund’s holdings of cash and United States Treasury Obligations are required to be deposited as margin in support of the Fund’s long futures positions as of December 31, 2011 and 2010, respectively. For additional information, please see the audited Schedule of Investments as of December 31, 2011 and 2010 for details of the Fund’s portfolio holdings.

DBIQ™, DBLCI™ and Deutsche Bank Liquid Commodity Index™ are trademarks of Deutsche Bank AG London (the “Index Sponsor”). Trademark applications in the United States are pending with respect to both the Fund and the Index. Any use of these trademarks must be with the consent of or under license from the Index Sponsor. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademarks. The Index Sponsor does not approve, endorse or recommend the Fund or the Managing Owner.

The Index Sponsor obtains information for inclusion in, or for use in the calculation of, the Index from sources the Index Sponsor considers reliable. None of the Index Sponsor, the Managing Owner, the Fund or any of their respective affiliates accepts responsibility for or guarantees the accuracy and/or completeness of the Index or any data included in the Index.

Index Composition

The Index is composed of notional amounts of each of the Index Commodities. The notional amounts of each Index Commodity included in the Index are broadly in proportion to historical levels of the world’s production and supplies of the Index Commodities. The closing level of the Index is calculated on each business day by the Index Sponsor based on the closing price of the futures contracts for each of the Index Commodities and the notional amount of such Index Commodity.

The Index is rebalanced annually in November to ensure that each of the Index Commodities is weighted in the same proportion that such Index Commodities were weighted on September 3, 1997¹ (the “Base Date”). The Index has been calculated back to the Base Date. On the Base Date, the closing level was 100. The following table reflects the index base weights of each Index Commodity on the Base Date (the “Index Base Weights”):

Index Commodity	Index Base Weight (%)
Light Sweet Crude Oil (WTI)		12.375
Heating Oil		12.375
RBOB Gasoline		12.375
Natural Gas		5.500
Brent Crude		12.375
Gold		8.000
Silver		2.000
Aluminum		4.167
Zinc		4.167
Copper Grade A		4.167
Corn		5.625
Wheat		5.625
Soybeans		5.625
Sugar		5.625
Closing Level on Base Date:		100.000

1 From May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index - Optimum Yield Excess Return^™. As of July 31, 1988, the base date of the Deutsche Bank Liquid Commodity Index - Optimum Yield Excess Return^™, the index base weights of each index commodity was: Light Sweet Crude Oil (WTI) - 35.00%; Heating Oil - 20.00%; Aluminum - 12.50%; Gold - 10.00%; Corn - 11.25%; and Wheat - 11.25%. Accordingly, the closing level on the base date was 100.00%.

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The following table reflects the Fund weights of each Index Commodity or related futures contracts, as applicable, as of December 31, 2011:

Index Commodity	Fund Weight (%)
Light Sweet Crude Oil (WTI)		13.56
Heating Oil		12.36
RBOB Gasoline		12.50
Natural Gas		4.82
Brent Crude		12.47
Gold		7.37
Silver		1.68
Aluminum		4.17
Zinc		4.06
Copper Grade A		4.30
Corn		5.69
Wheat		5.71
Soybeans		5.86
Sugar		5.45
Closing Level as of December 31, 2011		100.00

Please see http://dbfunds.db.com/dbc/weights.aspx with respect to the most recently available weighted composition of the Fund and http://dbfunds.db.com/dbc/index.aspx with respect to the composition of the Fund’s index on the Base Date.

The Index Commodities are traded on the following futures exchanges: Light Sweet Crude Oil (WTI), Heating Oil, RBOB Gasoline and Natural Gas: New York Mercantile Exchange; Brent Crude: ICE Futures Europe; Gold and Silver: Commodity Exchange Inc., New York; Aluminum, Zinc and Copper Grade A: The London Metal Exchange Limited; Corn, Wheat and Soybeans: Board of Trade of the City of Chicago Inc.; and Sugar: ICE Futures U.S., Inc.

The composition of the Index may be adjusted in the event that the Index Sponsor is not able to calculate the closing prices of the Index Commodities.

The Index includes provisions for the replacement of futures contracts as they approach maturity. This replacement takes place over a period of time in order to lessen the impact on the market for the futures contracts being replaced. With respect to each Index Commodity, the Fund employs a rule-based approach when it ‘rolls’ from one futures contract to another.

Rather than select a new futures contract based on a predetermined schedule (e.g., monthly), each Index Commodity rolls to the futures contract which generates the best possible ‘implied roll yield.’ The futures contract with a delivery month within the next thirteen months which generates the best possible implied roll yield will be included in the Index. As a result, the Fund is able to potentially maximize the roll benefits in backwardated markets and minimize the losses from rolling in contangoed markets for each Index Commodity.

In general, as a futures contract approaches its expiration date, its price will move towards the spot price in a contangoed market. Assuming the spot price does not change, this would result in the futures contract price decreasing and a negative implied roll yield. The opposite is true in a backwardated market. Rolling in a contangoed market will tend to cause a drag on an Index Commodity’s contribution to the Fund’s return while rolling in a backwardated market will tend to cause a push on an Index Commodity’s contribution to the Fund’s return.

The DBIQ Optimum Yield Diversified Commodity Index™ is calculated in USD on both an excess return (unfunded) and total return (funded) basis.

The futures contract price for each Index Commodity will be the exchange closing price for such Index Commodity on each weekday when banks in New York, New York are open (the “Index Business Days”). If a weekday is not an Exchange Business Day (as defined in the following sentence) but is an Index Business Day, the exchange closing price from the previous Index Business Day will be used for each Index Commodity. “Exchange Business Day” means, in respect of an Index Commodity, a day that is a trading day for such Index Commodity on the relevant exchange (unless either an Index disruption event or force majeure event has occurred).

On the first New York business day (the “Verification Date”) of each month, each Index Commodity futures contract will be tested in order to determine whether to continue including it in the Index. If the Index Commodity futures contract requires delivery of the underlying commodity in the next month, known as the Delivery Month, a new Index Commodity futures contract will be selected

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for inclusion in the Index. For example, if the first New York business day is October 1, 2012, and the Delivery Month of the Index Commodity futures contract currently in the Index is November 2012, a new Index Commodity futures contract with a later Delivery Month will be selected.

For each underlying Index Commodity in the Index, the new Index Commodity futures contract selected will be the Index Commodity futures contract with the best possible “implied roll yield” based on the closing price for each eligible Index Commodity futures contract. Eligible Index Commodity futures contracts are any Index Commodity futures contracts having a Delivery Month (i) no sooner than the month after the Delivery Month of the Index Commodity futures contract currently in the Index, and (ii) no later than the 13^th month after the Verification Date. For example, if the first New York business day is October 1, 2012 and the Delivery Month of an Index Commodity futures contract currently in the Index is November 2012, the Delivery Month of an eligible new Index Commodity futures contract must be between December 2012 and October 2013. The implied roll yield is then calculated and the futures contract on the Index Commodity with the best possible implied roll yield is then selected. If two futures contracts have the same implied roll yield, the futures contract with the minimum number of months prior to the Delivery Month is selected.

After the futures contract selection, the monthly roll for each Index Commodity subject to a roll in that particular month unwinds the old futures contract and enters a position in the new futures contract. This takes place between the 2^nd and 6^th Index Business Day of the month.

On each day during the roll period, new notional holdings are calculated. The calculations for the futures contracts on the old Index Commodities that are leaving the Index and the futures contracts on the new Index Commodities are then calculated.

On all days that are not monthly index roll days, the notional holdings of each Index Commodity future remains constant.

The Index is re-weighted on an annual basis on the 6^th Index Business Day of each November.

The calculation of the Index is expressed as the weighted average return of the Index Commodities.

General

DBIQ™, DBLCI™ and Deutsche Bank Liquid Commodity Index™ are trademarks of Deutsche Bank AG London (the “Index Sponsor”). Trademark applications in the United States are pending with respect to both the Fund and aspects of the Index. Any use of these trademarks must be with the consent of or under license from the Index Sponsor. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademarks. The Index Sponsor is an affiliate of the Fund and the Managing Owner.

The Index Sponsor obtains information for inclusion in, or for use in the calculation of, the Index from sources the Index Sponsor considers reliable. None of the Index Sponsor, the Managing Owner, the Fund or any of their respective affiliates accepts responsibility for or guarantees the accuracy and/or completeness of the Index or any data included in the Index.

A patent application directed to the creation and operation of the Fund is pending at the United States Patent and Trademark Office.

The Trustee

Under the Trust Agreement, Wilmington Trust Company, the Trustee of the Fund, has delegated to the Managing Owner the exclusive management and control of all aspects of the business of the Fund. The Trustee will have no duty or liability to supervise or monitor the performance of the Managing Owner, nor will the Trustee have any liability for the acts or omissions of the Managing Owner. The Trustee is compensated by the Managing Owner. Under the Trust Agreement, the Managing Owner, from the assets of the Fund, will indemnify the Trustee for any liability or expense relating to the formation, operations and termination of the Fund incurred without gross negligence or willful misconduct of the Trustee.

The Managing Owner

The Managing Owner was formed on May 23, 2005. The Managing Owner is an indirect wholly-owned subsidiary of Deutsche Bank AG. The Managing Owner serves as the commodity pool operator and commodity trading advisor of the Fund. The Managing Owner was formed to be the managing owner of investment vehicles such as the Fund and has been managing such investment vehicles since January 2006. The Managing Owner is registered as a commodity pool operator and commodity trading advisor with the CFTC and is a member of the National Futures Association (the “NFA”). As a registered commodity pool operator and commodity trading advisor, with respect to the Fund, the Managing Owner must comply with various regulatory requirements under the Commodity Exchange Act (the “CEAct”) and the rules and regulations of the CFTC and the NFA, including investor protection requirements,

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antifraud prohibitions, disclosure requirements, and reporting and recordkeeping requirements. The Managing Owner is also subject to periodic inspections and audits by the CFTC and NFA.

The Managing Owner’s main business offices are located at 60 Wall Street, New York, New York 10005, telephone (212) 250-5883.

The Fund pays the Managing Owner a management fee (the “Management Fee”)², monthly in arrears, in an amount equal to 0.85% per annum of the daily net asset value of the Fund. The Management Fee is paid in consideration of the Managing Owner’s commodity futures trading advisory services.

Pursuant to the Trust Agreement, the Fund will indemnify the Managing Owner against any losses, judgments, liabilities, expenses and amounts paid in settlement of any claims sustained by it in connection with its activities on behalf of the Fund incurred without negligence or misconduct.

The Commodity Broker

Deutsche Bank Securities Inc., a Delaware corporation, serves as the Fund’s clearing broker (the “Commodity Broker”). The Commodity Broker is also an indirect wholly-owned subsidiary of Deutsche Bank AG and an affiliate of the Managing Owner. In its capacity as clearing broker, the Commodity Broker executes and clears each of the Fund’s futures transactions and performs certain administrative and custodial services for the Fund. As custodian of the Fund’s assets, the Commodity Broker is responsible, among other things, for providing periodic accountings of all dealings and actions taken by the Fund during the reporting period, together with an accounting of all securities, cash or other indebtedness or obligations held by it or its nominees for or on behalf of the Fund.

A variety of executing brokers execute futures transactions on behalf of the Fund. Such executing brokers “give-up”, or transfer for clearing, all such transactions to the Commodity Broker. The Commodity Broker is registered with the CFTC as a futures commission merchant and is a member of the NFA in such capacity.

The Fund pays to the Commodity Broker all brokerage commissions, including applicable exchange fees, NFA fees, give-up fees, pit brokerage fees and other transaction related fees and expenses charged in connection with trading activities. The Commodity Broker’s brokerage commissions and trading fees are determined on a contract-by-contract basis. Brokerage commissions and fees in any future fiscal year or any part of any future fiscal year may be greater. On average, total charges paid to the Commodity Broker were less than $10.00 per round-turn trade³ for the Years Ended December 31, 2011, 2010 and 2009.

The Administrator

The Managing Owner, on behalf of the Fund, has appointed The Bank of New York Mellon as the administrator (the “Administrator”) of the Fund and has entered into an Administration Agreement in connection therewith. The Bank of New York Mellon serves as custodian of the Fund (the “Custodian”) and has entered into a Global Custody Agreement (the “Custody Agreement”) in connection therewith. The Bank of New York Mellon serves as the transfer agent (the “Transfer Agent”) of the Fund and has entered into a Transfer Agency and Service Agreement in connection therewith.

The Bank of New York Mellon, a banking corporation organized under the laws of the State of New York with trust powers, has an office at 2 Hanson Place, 12^th Floor, Brooklyn, New York 11217. The Bank of New York Mellon is subject to supervision by the New York State Banking Department and the Board of Governors of the Federal Reserve System.

Pursuant to the Administration Agreement, the Administrator performs or supervises the performance of services necessary for the operation and administration of the Fund (other than making investment decisions), including receiving and processing orders from Authorized Participants to create and redeem Baskets, net asset value calculations, accounting and other fund administrative services. The Administrator retains certain financial books and records, including: Basket creation and redemption books and records, fund accounting records, ledgers with respect to assets, liabilities, capital, income and expenses, the registrar, transfer journals and related details, and trading and related documents received from futures commission merchants.

The Administration Agreement will continue in effect from the commencement of trading operations unless terminated on at least 90 days’ prior written notice by either party to the other party. Notwithstanding the foregoing, the Administrator may terminate the Administration Agreement upon 30 days’ prior written notice if the Fund has materially failed to perform its obligations under the Administration Agreement.

2 From July 12, 2006 through January 3, 2010, the Management Fee payable by the Fund was 0.75% per annum of the daily net asset value of the Fund. Effective January 4, 2010, the Management Fee payable by the Fund was increased from 0.75% to 0.85% per annum of the daily net asset value of the Fund.

3 A round-turn trade is a completed transaction involving both a purchase and a liquidating sale, or a sale followed by a covering purchase.

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The Administration Agreement provides for the exculpation and indemnification of the Administrator from and against any costs, expenses, damages, liabilities or claims (other than those resulting from the Administrator’s own bad faith, negligence or willful misconduct) which may be imposed on, incurred by or asserted against the Administrator in performing its obligations or duties under the Administration Agreement.

The Administrator’s monthly fees are paid on behalf of the Fund by the Managing Owner out of the Management Fee.

The Administrator and any of its affiliates may from time-to-time purchase or sell Shares for their own account, as agent for their customers and for accounts over which they exercise investment discretion.

The Administrator receives a transaction processing fee in connection with orders from Authorized Participants to create or redeem Baskets in the amount of $500 per order. These transaction processing fees are paid directly by the Authorized Participants and not by the Fund.

The Distributor

ALPS Distributors, Inc. (the “Distributor”) provides certain distribution services to the Fund. Pursuant to the Distribution Services Agreement among the Managing Owner, in its capacity as managing owner of the Fund, the Fund and the Distributor, the Distributor assists the Managing Owner and the Administrator with certain functions and duties relating to distribution and marketing services to the Fund including reviewing and approving marketing materials.

The Distribution Services Agreement is terminable without penalty on sixty days’ written notice by the Managing Owner or by the Distributor. The Distribution Services Agreement will automatically terminate in the event of its assignment.

Pursuant to the Distribution Services Agreement, the Fund will indemnify and hold harmless the Distributor and each of its directors and officers and each person, if any, who controls the Distributor within the meaning of Section 15 of the 1933 Act, against any loss, liability, claim, damages or expenses (including the reasonable cost of investigating or defending any alleged loss, liability, claim, damages or expense and reasonable counsel fees incurred in connection therewith) arising by reason of any person acquiring any Shares, based upon the ground that the registration statement, prospectus, statement of additional information, shareholder reports or other information filed or made public by the Fund (as from time-to-time amended) included an untrue statement of a material fact or omitted to state a material fact required to be stated or necessary in order to make the statements not misleading under the 1933 Act or any other statute or the common law.

Invesco Powershares Capital Management LLC

Under the License Agreement among Invesco Powershares Capital Management LLC (the “Licensor”), and the Managing Owner in its own capacity and in its capacity as managing owner of the Fund (the Fund and the Managing Owner, collectively, the “Licensees”), the Licensor granted to each Licensee a non-exclusive license to use the “PowerShares®” trademark (the “Trademark”) anywhere in the world, solely in connection with the marketing and promotion of the Fund and to use or refer to the Trademark in connection with the issuance and trading of the Fund as necessary.

Invesco Aim Distributors, Inc.

Through a marketing agreement between the Managing Owner and Invesco Aim Distributors, Inc. (“Invesco Aim Distributors”), an affiliate of Invesco PowerShares Capital Management LLC (“Invesco PowerShares”), the Managing Owner, on behalf of the Fund, has appointed Invesco Aim Distributors as a marketing agent. Invesco Aim Distributors assists the Managing Owner and the Administrator with certain functions and duties such as providing various educational and marketing activities regarding the Fund, primarily in the secondary trading market, which activities include, but are not limited to, communicating the Fund’s name, characteristics, uses, benefits, and risks, consistent with the prospectus. Invesco Aim Distributors will not open or maintain customer accounts or handle orders for the Fund. Invesco Aim Distributors engages in public seminars, road shows, conferences, media interviews, and distributes sales literature and other communications (including electronic media) regarding the Fund.

Tax Reporting

The Fund has retained the services of PricewaterhouseCoopers LLP to assist with certain tax reporting requirements of the Fund and its Shareholders.

Regulation

Futures exchanges in the United States are subject to regulation under the CEAct by the CFTC, the governmental agency having responsibility for regulation of futures exchanges and trading on those exchanges. No U.S. governmental agency regulates the over-the-counter (the “OTC”) foreign exchange markets.

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The CEAct and the CFTC also regulate the activities of “commodity trading advisors” and “commodity pool operators” and the CFTC has adopted regulations with respect to certain of such persons’ activities. Pursuant to its authority, the CFTC requires a commodity pool operator (such as the Managing Owner) to keep accurate, current and orderly records with respect to each pool it operates. The CFTC may suspend the registration of a commodity pool operator if the CFTC finds that the operator has violated the CEAct or regulations thereunder and in certain other circumstances. Suspension, restriction or termination of the Managing Owner’s registration as a commodity pool operator would prevent it, until such time (if any) as such registration were to be reinstated, from managing, and might result in the termination of, the Fund. The CEAct gives the CFTC similar authority with respect to the activities of commodity trading advisors, such as the Managing Owner. If the registration of a managing owner as a commodity trading advisor were to be terminated, restricted or suspended, the managing owner would be unable, until such time (if any) as such registration were to be reinstated, to render trading advice to the Fund. The Fund itself is not registered with the CFTC in any capacity.

The CEAct requires all “futures commission merchants,” such as the Commodity Broker, to meet and maintain specified fitness and financial requirements, segregate customer funds from proprietary funds and account separately for all customers’ funds and positions, and to maintain specified books and records open to inspection by the staff of the CFTC.

The CEAct also gives the states certain powers to enforce its provisions and the regulations of the CFTC.

Shareholders are afforded certain rights for reparations under the CEAct. Shareholders may also be able to maintain a private right of action for certain violations of the CEAct. The CFTC has adopted rules implementing the reparation provisions of the CEAct which provide that any person may file a complaint for a reparations award with the CFTC for violation of the CEAct against a floor broker, futures commission merchant, introducing broker, commodity trading advisor, commodity pool operator, and their respective associated persons.

Pursuant to authority in the CEAct, the NFA has been formed and registered with the CFTC as a “registered futures association.” At the present time, the NFA is the only non-exchange self-regulatory organization for commodities professionals. NFA members are subject to NFA standards relating to fair trade practices, financial condition, and consumer protection. As the self-regulatory body of the commodities industry, the NFA promulgates rules governing the conduct of commodity professionals and disciplines those professionals who do not comply with such standards. The CFTC has delegated to the NFA responsibility for the registration of commodity trading advisors, commodity pool operators, futures commission merchants, introducing brokers and their respective associated persons and floor brokers. The Commodity Broker and the Managing Owner are members of the NFA (the Fund itself is not required to become a member of the NFA).

The CFTC has no authority to regulate trading on foreign commodity exchanges and markets.

Employees

The Fund has no employees.

Available Information

The Fund files with or submits to the SEC annual, quarterly and current reports and other information meeting the informational requirements of the Exchange Act. These reports are available on the Managing Owner’s website at http://dbfunds.db.com. Investors may also inspect and copy these reports, proxy statements and other information, and related exhibits and schedules, at the Public Reference Room of the SEC at 100 F Street, NE, Washington, D.C. 20549. Investors may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains an Internet site that contains reports, proxy and information statements and other information filed electronically by us with the SEC which are available on the SEC’s Internet site at http://www.sec.gov.

The Fund also posts monthly performance reports and its annual report, as required by the CFTC, on the Managing Owner’s website at the address listed above.

ITEM 1A. RISK FACTORS

An investment in the securities of the Fund involves a high degree of risk. Investors should consider carefully all of the risks described below, together with the other information contained in this report and the Prospectus, before making a decision to invest in the securities of the Fund. If any of the following risks occur, the business, financial condition and results of operations of the Fund may be adversely affected.

Investment and Trading Related Risks

The Value of the Shares Relates Directly to the Value of the Commodity Futures Contracts and Other Assets Held by the Fund and Fluctuations in the Price of These Assets Could Materially Adversely Affect an Investment in the Shares.

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The Shares are designed to reflect as closely as possible the changes, positive or negative, in the level of the Index, over time, through the Fund’s portfolio of exchange-traded futures contracts on the Index Commodities. The value of the Shares relates directly to the value of the portfolio, less the liabilities (including estimated accrued but unpaid expenses) of the Fund. The price of the Index Commodities may fluctuate widely. Several factors may affect the prices of the Index Commodities, including, but not limited to:

• Global supply and demand of each of the Index Commodities, which may be influenced by such factors as forward selling by the various commodities producers, purchases made by the commodities’ producers to unwind their hedge positions and production and cost levels in the major markets of each of the Index Commodities;

• Domestic and foreign interest rates and investors’ expectations concerning interest rates;

• Domestic and foreign inflation rates and investors’ expectations concerning inflation rates;

• Investment and trading activities of mutual funds, hedge funds and commodity funds; and

• Global or regional political, economic or financial events and situations.

Net Asset Value May Not Always Correspond to Market Price and, as a Result, Baskets May be Created or Redeemed at a Value that Differs from the Market Price of the Shares.

The net asset value per Share will change as fluctuations occur in the market value of the Fund’s portfolio. Investors should be aware that the public trading price of a Basket may be different from the net asset value of a Basket (i.e., 200,000 Shares may trade at a premium over, or a discount to, net asset value of a Basket) and similarly the public trading price per Share may be different from the net asset value per Share. Consequently, an Authorized Participant may be able to create or redeem a Basket at a discount or a premium to the public trading price per Share. This price difference may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for Shares are closely related, but not identical to, the same forces influencing the prices of the Index Commodities trading individually or in the aggregate at any point in time. Investors also should note that the size of the Fund in terms of total assets held may change substantially over time and from time-to-time as Baskets are created and redeemed.

Authorized Participants or their clients or customers may have an opportunity to realize a riskless profit if they can purchase a Basket at a discount to the public trading price of the Shares or can redeem a Basket at a premium over the public trading price of the Shares. The Managing Owner expects that the exploitation of such arbitrage opportunities by Authorized Participants and their clients and customers will tend to cause the public trading price to track net asset value per Share closely over time.

The value of a Share may be influenced by non-concurrent trading hours between the NYSE Arca and the various futures exchanges on which the Index Commodities are traded. While the Shares trade on the NYSE Arca from 9:30 a.m. to 4:00 p.m. Eastern Standard Time, the below table lists the trading hours for each of the Index Commodities which trade on the futures exchange set forth in the table:

Index Commodity	Exchange1	Trading Hours2
Corn
Soybeans	CBOT	10:30 am – 2:15 pm
Wheat
Sugar #11	ICE US	3:30 am – 2:00 pm
Aluminum	LME	6:55 am – 7:00 am 7:55 am – 8:00 am 8:20 am – 9:45 am 10:15 am –10:20 am 10:55 am –11:00 am 11:15 am –12:00 pm
Copper – Grade A	LME	7:00 am – 7:05 am 7:30 am – 7:35 am 8:20 am – 9:45 am 10:10 am –10:15 am 10:50 am –10:55 am 11:15 am –11:55 am
Zinc	LME	7:10 am – 7:15 am 7:50 am – 7:55 am 8:20 am – 9:45 am 10:05 am –10:10 am 10:45 am –10:50 am 11:15 am –11:50 am
Light Sweet Crude Oil (WTI)	NYMEX	9:00 am – 2:30 pm

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Heating Oil
Natural Gas
RBOB
Brent Crude Oil	ICE EUR	8:00 pm – 6:00 pm3
Silver	COMEX	8:25 am – 1:25 pm
Gold	COMEX	8:20 am – 1:30 pm

Legend:

1 “CBOT” means the Board of Trade of the City of Chicago Inc., or its successor.

“ICE US” means ICE Futures U.S., Inc. or its successor (formerly traded on NYBOT, or Board of Trade of the City of New York, Inc. or its successor.)

“LME” means The London Metal Exchange Limited or its successor.

“NYMEX” means the New York Mercantile Exchange or its successor.

“ICE EUR” means ICE Futures Europe, or its successor.

“COMEX” means the Commodity Exchange Inc., New York or its successor.

2 All trading hours are as of Eastern Standard Time. All trading occurs on Monday – Friday, unless otherwise specified.

3 Trading occurs on Sunday – Friday and ends on the next day.

For example, while the Shares trade on the NYSE Arca until 4:00 p.m. Eastern Standard Time, liquidity in the global gold market will be reduced after the close of the COMEX division of the New York Mercantile Exchange at 1:30 p.m. Eastern Standard Time. As a result, during periods when the NYSE Arca is open and the futures exchanges on which the Index Commodities are traded are closed, trading spreads and the resulting premium or discount on the Shares may widen and, therefore, increase the difference between the price of the Shares and the net asset value of the Shares.

Regulatory and Exchange Position Limits and Other Rules May Restrict the Creation of Baskets and the Operation of the Fund.

CFTC and commodity exchange rules impose speculative position limits on market participants, including the Fund, trading in certain commodities. These position limits prohibit any person from holding a position of more than a specific number of such futures contracts.

The Index is composed of 14 Index Commodities, of which 10 Index Commodities are subject to speculative position limits imposed by either the CFTC or the rules of the futures exchanges on which the futures contracts for the applicable Index Commodities are traded. The purposes of speculative position limits are to diminish, eliminate or prevent sudden or unreasonable fluctuations or unwarranted changes in the prices of futures contracts. Currently, speculative position limits (i) for corn, oats, wheat, soybean, soybean oil and cotton are determined by the CFTC and (ii) for all other commodities are determined by the futures exchanges. Pursuant to the statutory mandate of the Dodd-Frank Wall Street Reform and Consumer Protection Act, or the Dodd-Frank Act, which was signed into law on July 21, 2010, the CFTC adopted final regulations on October 18, 2011, or the Regulations, which, in pertinent part, impose new federal position limits on futures and options on a subset of energy, metal, and agricultural commodities, or the Referenced Contracts, and economically equivalent swaps. The Referenced Contracts subject to the 2011 Proposed Rules represent 75.125% of original base weights of the Index Commodities. The Regulations will go into effect 60 days after the term “swap” is further defined pursuant to Section 721 of the Dodd-Frank Act.

Generally, speculative position limits in the physical delivery markets are set at a stricter level during the spot month, the month when the futures contract matures and becomes deliverable, versus the limits set for all other months. If the Managing Owner determines that the Fund’s trading may be approaching any of these speculative position limits, the Fund may reduce its trading in that commodity or trade in other commodities or instruments that the Index Sponsor determines comply with the rules and goals of the Index. Below is a chart that sets forth certain relevant information, including current speculative position limits for each Affected Index Commodity that any person may hold, separately or in combination, net long or net short, for the purchase or sale of any commodity futures contract or, on a futures-equivalent basis, options thereon. Speculative position limit levels remain subject to change by the CFTC or the relevant exchanges.

Exchanges may also establish accountability levels applicable to futures contracts. An exchange may order a person who holds or controls aggregate positions in excess of specified position accountability levels not to further increase the positions, to comply with any prospective limit which exceeds the size of the position owned or controlled, or to reduce any open position which exceeds position

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accountability levels if the exchange determines that such action is necessary to maintain an orderly market. Under current regulations, subject to any relevant exemptions, traders, such as the Fund, may not exceed speculative position limits, either individually or in the aggregate with other persons with whom they are under common control or ownership. Under the Regulations, the CFTC would require certain persons to aggregate exchange listed futures and economically equivalent swap positions owned or controlled by such persons.

Affected Index Commodity	Exchange  (Symbol)1	Exchange Position Limits2
Corn	CBOT (C)	600 – Spot Month 13,500 – Single Month 22,000 – All Months Combined
Soybeans	CBOT (S)	600 – Spot Month 6,500 – Single Month 10,000 – All Months Combined
Wheat	CBOT (W)	600 – Spot Month 5,000 – Single Month 6,500 – All Months Combined
Sugar #11	ICE US (SB)	5,000 – Spot Month
Light Sweet Crude Oil	NYMEX (CL)	3, 000 – Spot Month 10,000 – Single Month 20,000 – All Months Combined
Heating Oil	NYMEX (HO)	1,000 – Spot Month 5,000 – Single Month 7,000 – All Months Combined
Natural Gas	NYMEX (NG)	1,000 – Spot Month 6,000 – Single Month 12,000 – All Months Combined
Silver	COMEX (SI)	1,500 – Spot Month 6,000 – Single Month 6,000 – All Months Combined
Gold	COMEX (GC)	3,000 – Spot Month 6,000 – Single Month 6,000 – All Months Combined
RBOB Gasoline	NYMEX (CL)	1,000 – Spot Month 5,000 – Single Month 7,000 – All Months Combined

Legend:

1 “CBOT” means the Board of Trade of the City of Chicago Inc., or its successor.

“ICE US” means ICE Futures U.S., Inc. or its successor.

“NYMEX” means the New York Mercantile Exchange or its successor.

“COMEX” means the Commodity Exchange Inc., New York or its successor.

2 Subject to any additional limitations on an exchange-by-exchange basis, as applicable.

The Fund is subject to position limits and, consequently, the Fund’s ability to issue new Baskets, or the Fund’s ability to reinvest income in additional futures contracts corresponding to the Affected Index Commodities, may be limited to the extent these activities would cause the Fund to exceed its applicable position limits. Limiting the size of the Fund may affect the correlation between the price of the Shares, as traded on the NYSE Arca, and the net asset value of the Fund. That is, the inability to create additional Baskets could result in Shares trading at a premium or discount to net asset value of the Fund.

Under the Regulations, the CFTC is required to, among other things, establish speculative position limits on exchange listed futures and options on physical commodities (including certain energy, metals and agricultural products) and economically equivalent over-the-counter derivatives. The Regulations also require the CFTC to establish aggregate position limits for contracts based on the same underlying commodity, including certain contracts traded on non-U.S. exchanges. Depending on the outcome of any future CFTC or futures exchange rulemaking, as applicable, the rules concerning position limits may be amended in a manner that is detrimental to the Fund. For example, if the amended rules are detrimental to the Fund, its ability to issue new Baskets, or reinvest income in additional futures contracts corresponding to the Affected Index Commodities, may be limited to the extent these activities would cause the Fund

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to exceed the applicable position limits. Limiting the size of the Fund may affect the correlation between the price of the Shares, as traded on the NYSE Arca, and the net asset value of the Fund. That is, the inability to create additional Baskets could result in Shares in the Fund trading at a premium or discount to net asset value of the Fund.

The Fund’s Performance May Not Always Replicate Exactly the Changes in the Levels of its Index.

It is possible that the Fund’s performance may not fully replicate the changes in levels of the Index due to disruptions in the markets for the relevant Index Commodities, the imposition of speculative position limits (as discussed in the above risk factor “Regulatory and Exchange Position Limits and Other Rules May Restrict the Creation of Baskets and the Operation of the Fund”), or due to other extraordinary circumstances. As the Fund approaches or reaches position limits with respect to certain futures contracts comprising the Index, the Fund may commence investing in other futures contracts based on commodities that comprise the Index and in futures contracts based on commodities other than commodities that comprise the Index that, in the commercially reasonable judgment of the Managing Owner, tend to exhibit trading prices that correlate with a futures contract that comprises the Index. In addition, the Fund is not able to replicate exactly the changes in levels of the Index because the total return generated by the Fund is reduced by expenses and transaction costs, including those incurred in connection with the Fund’s trading activities, and increased by interest income from the Fund’s holdings of short-term high credit quality fixed income securities. Tracking the Index requires trading of the Fund’s portfolio with a view to tracking the Index over time and is dependent upon the skills of the Managing Owner and its trading principals, among other factors.

The Fund Is Not Actively Managed and Tracks the Index During Periods in Which the Index Is Flat or Declining as Well as When the Index Is Rising.

The Fund is not actively managed by traditional methods. Therefore, if positions in any one or more of the Index Commodities are declining in value, the Fund will not close out such positions, except in connection with a change in the composition or weighting of the Index. The Managing Owner seeks to cause the net asset value to track the Index during periods in which the Index is flat or declining as well as when the Index is rising.

The NYSE Arca May Halt Trading in the Shares Which Would Adversely Impact Your Ability to Sell Shares.

The Shares are listed for trading on the NYSE Arca under the market symbol “DBC”. Trading in Shares may be halted due to market conditions or, in light of NYSE Arca rules and procedures, for reasons that, in the view of the NYSE Arca, make trading in Shares inadvisable. In addition, trading is subject to trading halts caused by extraordinary market volatility pursuant to “circuit breaker” rules that require trading to be halted for a specified period based on a specified market decline. There can be no assurance that the requirements necessary to maintain the listing of the Shares will continue to be met or will remain unchanged. The Fund will be terminated if the Shares are delisted.

The Lack of An Active Trading Market for the Shares May Result in Losses on Your Investment at the Time of Disposition of Your Shares.

Although the Shares are listed and traded on the NYSE Arca, there can be no guarantee that an active trading market for the Shares will be maintained. If you need to sell your Shares at a time when no active market for them exists, the price you receive for your Shares, assuming that you are able to sell them, likely will be lower than the price you would receive if an active market did exist.

The Shares Are a Relatively New Securities Product and Their Value Could Decrease if Unanticipated Operational or Trading Problems Arise.

The mechanisms and procedures governing the creation, redemption and offering of the Shares have been developed specifically for this securities product. Consequently, there may be unanticipated problems or issues with respect to the mechanics of the operations of the Fund and the trading of the Shares that could have a material adverse effect on an investment in the Shares. In addition, although the Fund is not actively “managed” by traditional methods, to the extent that unanticipated operational or trading problems or issues arise, the Managing Owner’s past experience and qualifications may not be suitable for solving these problems or issues.

As the Managing Owner and its Principals have Been Operating Investment Vehicles like the Fund Since January 2006, their Experience May be Inadequate or Unsuitable to Manage the Fund.

The Managing Owner was formed to be the managing owner of investment vehicles such as the Fund and has been managing such investment vehicles since January 2006. The past performances of the Managing Owner’s management of other commodity pools are no indication of its ability to manage an investment vehicle such as the Fund. If the experience of the Managing Owner and its principals is not adequate or suitable to manage an investment vehicle such as the Fund, the operations of the Fund may be adversely affected.

You May Not Rely on Past Performance or Index Results in Deciding Whether to Buy Shares.

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Although past performance is not necessarily indicative of future results, the Fund’s performance history might (or might not) provide you with more information on which to evaluate an investment in the Fund. Likewise, the Index has a history which might (or might not) be indicative of the future Index results, or of the future performance of the Fund. Therefore, you will have to make your decision to invest in the Fund without relying on the Fund’s past performance history or the Index’s closing level history.

Fewer Representative Commodities May Result In Greater Index Volatility.

The Index Commodities are Light Sweet Crude Oil (WTI), Heating Oil, RBOB Gasoline, Natural Gas, Brent Crude, Gold, Silver, Aluminum, Zinc, Copper Grade A, Corn, Wheat, Soybeans, and Sugar. Accordingly, the Index is concentrated in terms of the number of commodities represented. You should be aware that other commodities indexes are more diversified in terms of both the number and variety of commodities included. Concentration in fewer commodities may result in a greater degree of volatility in the Index and the net asset value of the Fund which track the Index under specific market conditions and over time.

Price Volatility May Possibly Cause the Total Loss of Your Investment.

Futures contracts have a high degree of price variability and are subject to occasional rapid and substantial changes. Consequently, you could lose all or substantially all of your investment in the Fund.

The following table reflects various measures of volatility* of the Index as calculated on an excess return basis:

Volatility Type	Volatility
Daily volatility over full history		16.28	%
Average rolling 3 month daily volatility		15.46	%
Monthly return volatility		19.18	%
Average annual volatility		15.39	%

The following table reflects the daily volatility on an annual basis of the Index:

Year	Daily Volatility
1997**		8.07	%
1998		11.88	%
1999		12.78	%
2000		14.74	%
2001		13.40	%
2002		12.37	%
2003		13.74	%
2004		15.93	%
2005		14.71	%
2006		16.30	%
2007		13.96	%
2008		28.39	%
2009		22.08	%
2010		15.50	%
2011***		17.04	%

* Volatility, for these purposes, means the following:

Daily Volatility: The relative rate at which the price of the Index moves up and down, found by calculating the annualized standard deviation of the daily change in price.

Monthly Return Volatility: The relative rate at which the price of the Index moves up and down, found by calculating the annualized standard deviation of the monthly change in price.

Average Annual Volatility: The average of yearly volatilities for a given sample period. The yearly volatility is the relative rate at which the price of the Index moves up and down, found by calculating the annualized standard deviation of the daily change in price for each business day in the given year.

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** As of September 3, 1997.

*** As of December 31, 2011.

Past Index results are not necessarily indicative of future changes, positive or negative, in the Index levels.

Fees and Commissions are Charged Regardless of Profitability and May Result in Depletion of Assets.

The Fund is directly subject to the fees and expenses described herein which are payable irrespective of profitability. Such fees and expenses include asset-based fees of 0.85% per annum. Additional charges include brokerage fees of approximately 0.08% per annum in the aggregate and selling commissions. The Fund is expected to earn interest income at an annual rate of 0.075% per annum, based upon the yield on 3-month U.S. Treasury bills as of February 17, 2011. Because the Fund’s current interest income does not exceed its fees and expenses (other than selling commissions), the Fund will need to have a positive performance that exceeds the difference between the Fund’s interest income and its fees and expenses (other than selling commissions) in order to break even. If the aggregate of the Fund’s performance and interest income do not exceed the Fund’s fees and expenses described herein, then, the expenses of the Fund could, over time, result in losses to your investment therein. You may never achieve profits, significant or otherwise.

You Cannot Be Assured of the Managing Owner’s Continued Services, Which Discontinuance May Be Detrimental to the Fund.

You cannot be assured that the Managing Owner will be willing or able to continue to service the Fund for any length of time. If the Managing Owner discontinues its activities on behalf of the Fund, the Fund may be adversely affected.

Possible Illiquid Markets May Exacerbate Losses.

Futures positions cannot always be liquidated at the desired price. It is difficult to execute a trade at a specific price when there is a relatively small volume of buy and sell orders in a market. A market disruption, such as when foreign governments may take or be subject to political actions which disrupt the markets in their currency or major exports, can also make it difficult to liquidate a position.

There can be no assurance that market illiquidity will not cause losses for the Fund. The large size of the positions which the Fund may acquire increases the risk of illiquidity by both making its positions more difficult to liquidate and increasing the losses incurred while trying to do so.

You May Be Adversely Affected by Redemption Orders that Are Subject To Postponement, Suspension or Rejection Under Certain Circumstances.

The Fund may, in its discretion, suspend the right of redemption or postpone the redemption settlement date, (1) for any period during which an emergency exists as a result of which the redemption distribution is not reasonably practicable, or (2) for such other period as the Managing Owner determines to be necessary for the protection of the Shareholders. In addition, the Fund will reject a redemption order if the order is not in proper form as described in the participant agreement among the Authorized Participant, the Managing Owner and the Managing Owner in its capacity as managing owner of the Fund or if the fulfillment of the order, in the opinion of its counsel, might be unlawful. Any such postponement, suspension or rejection could adversely affect a redeeming Authorized Participant. For example, the resulting delay may adversely affect the value of the Authorized Participant’s redemption proceeds if the net asset value of the Fund declines during the period of delay. The Fund disclaims any liability for any loss or damage that may result from any such suspension or postponement.

Because the Futures Contracts Have No Intrinsic Value, the Positive Performance of Your Investment Is Wholly Dependent Upon an Equal and Offsetting Loss.

Futures trading is a risk transfer economic activity. For every gain there is an equal and offsetting loss rather than an opportunity to participate over time in general economic growth. Unlike most alternative investments, an investment in Shares does not involve acquiring any asset with intrinsic value. Overall stock and bond prices could rise significantly and the economy as a whole prosper while Shares trade unprofitably.

Failure of Commodity Futures Markets to Exhibit Low to Negative Correlation to General Financial Markets Will Reduce Benefits of Diversification and May Exacerbate Losses to Your Portfolio.

Historically, commodity futures’ returns have tended to exhibit low to negative correlation with the returns of other assets such as stocks and bonds. Although commodity futures trading can provide a diversification benefit to investor portfolios because of its low to negative correlation with other financial assets, the fact that the Index is not 100% negatively correlated with financial assets such as stocks and bonds means the Fund cannot be expected to be automatically profitable during unfavorable periods for the stock or bond market, or vice versa. If the Shares perform in a manner that correlates with the general financial markets or do not perform successfully, you will obtain no diversification benefits by investing in the Shares and the Shares may produce no gains to offset your losses from other investments.

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Shareholders Do Not Have the Protections Associated With Ownership of Shares in an Investment Company Registered Under the Investment Company Act of 1940.

The Fund is not registered as an investment company under the Investment Company Act of 1940 and is not required to register under such Act. Consequently, Shareholders do not have the regulatory protections provided to investors in registered and regulated investment companies.

Trading on Commodity Exchanges Outside the United States is Not Subject to U.S. Regulation.

Some of the Fund’s trading is expected to be conducted on commodity exchanges outside the United States. Trading on such exchanges is not regulated by any United States governmental agency and may involve certain risks not applicable to trading on United States exchanges, including different or diminished investor protections. In trading contracts denominated in currencies other than U.S. dollars, Shares are subject to the risk of adverse exchange-rate movements between the dollar and the functional currencies of such contracts. Investors could incur substantial losses from trading on foreign exchanges which such Investors would not have otherwise been subject had the Fund’s trading been limited to U.S. markets.

Aluminum, Zinc, Copper Grade A and Brent Crude are the only Index Commodities that are currently traded on foreign exchanges and such contracts are denominated in USD. The Managing Owner estimates that approximately 25% of the Fund’s assets will be allocated for investment in Aluminum, Zinc, Copper Grade A and Brent Crude.

The above range is only an approximation. The actual percentage may be either lesser or greater than above-listed.

Various Actual and Potential Conflicts of Interest May Be Detrimental to Shareholders.

The Fund is subject to actual and potential conflicts of interest involving the Managing Owner, various commodity futures brokers and Authorized Participants. The Managing Owner and its principals, all of whom are engaged in other investment activities, are not required to devote substantially all of their time to the business of the Fund, which also presents the potential for numerous conflicts of interest with the Fund. As a result of these and other relationships, parties involved with the Fund have a financial incentive to act in a manner other than in the best interests of the Fund and the Shareholders. The Managing Owner has not established any formal procedure to resolve conflicts of interest. Consequently, investors are dependent on the good faith of the respective parties subject to such conflicts to resolve them equitably. Although the Managing Owner attempts to monitor these conflicts, it is extremely difficult, if not impossible, for the Managing Owner to ensure that these conflicts do not, in fact, result in adverse consequences to the Shareholders.

The Fund may be subject to certain conflicts with respect to the Commodity Broker, including, but not limited to, conflicts that result from receiving greater amounts of compensation from other clients, or purchasing opposite or competing positions on behalf of third party accounts traded through the Commodity Broker.

Tax Related Risks

Shareholders Will Be Subject to Taxation on Their Allocable Share of the Fund’s Taxable Income, Whether or Not They Receive Cash Distributions.

Shareholders will be subject to U.S. federal income taxation and, in some cases, state, local, or foreign income taxation on their allocable share of the Fund’s taxable income, whether or not they receive cash distributions from the Fund. Shareholders may not receive cash distributions equal to their share of the Fund’s taxable income or even the tax liability that results from such income.

Items of Income, Gain, Loss and Deduction With Respect to Shares could be Reallocated if the IRS does not Accept the Assumptions or Conventions Used by the Fund in Allocating Such Items.

U.S. federal income tax rules applicable to partnerships are complex and often difficult to apply to publicly traded partnerships. The Fund will apply certain assumptions and conventions in an attempt to comply with applicable rules and to report items of income, gain, loss and deduction to Shareholders in a manner that reflects the Shareholders’ beneficial interest in such tax items, but these assumptions and conventions may not be in compliance with all aspects of the applicable tax requirements. It is possible that the IRS will successfully assert that the conventions and assumptions used by the Fund do not satisfy the technical requirements of the Code and/or Treasury Regulations and could require that items of income, gain, loss and deduction be adjusted or reallocated in a manner that adversely affects one or more Shareholders.

The Current Treatment of Long-Term Capital Gains Under Current U.S. Federal Income Tax Law May Be Adversely Affected, Changed or Repealed in the Future.

Under current law, long-term capital gains are taxed to non-corporate investors at reduced U.S. federal income tax rates. This tax treatment may be adversely affected, changed or repealed by future changes in, or the expiration of, tax laws at any time.

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PROSPECTIVE INVESTORS ARE STRONGLY URGED TO CONSULT THEIR OWN TAX ADVISERS AND COUNSEL WITH RESPECT TO THE POSSIBLE TAX CONSEQUENCES TO THEM OF AN INVESTMENT IN THE SHARES; SUCH TAX CONSEQUENCES MAY DIFFER WITH RESPECT TO DIFFERENT INVESTORS.

Other Risks

Failure of Futures Commission Merchants or Commodity Brokers to Segregate Assets May Increase Losses; Despite Segregation of Assets, the Fund Remains at Risk of Significant Losses Because the Fund May Only Receive a Pro-Rata Share of the Assets, or No Assets at All.

The CEAct requires a clearing broker to segregate all funds received from customers from such broker’s proprietary assets. If the Commodity Broker fails to do so, the assets of the Fund might not be fully protected in the event of the Commodity Broker’s bankruptcy. Furthermore, in the event of the Commodity Broker’s bankruptcy, the Shares could be limited to recovering either a pro rata share of all available funds segregated on behalf of the Commodity Broker’s combined customer accounts or the Shares may not recover any assets at all, even though certain property specifically traceable to the Fund was held by the Commodity Broker. The Commodity Broker may, from time-to-time, have been the subject of certain regulatory and private causes of action.

In the event of a bankruptcy or insolvency of any exchange or a clearing house, the Fund could experience a loss of the funds deposited through its Commodity Broker as margin with the exchange or clearing house, a loss of any unrealized profits on its open positions on the exchange, and the loss of profits on its closed positions on the exchange.

The Effect of Market Disruptions and Government Intervention Are Unpredictable and May Have an Adverse Effect on the Value of Your Shares.

The global financial markets have in the past few years gone through pervasive and fundamental disruptions that have led to extensive and unprecedented governmental intervention. Such intervention has in certain cases been implemented on an “emergency” basis, suddenly and substantially eliminating market participants’ ability to continue to implement certain strategies or manage the risk of their outstanding positions. In addition—as one would expect given the complexities of the financial markets and the limited time frame within which governments have felt compelled to take action—these interventions have typically been unclear in scope and application, resulting in confusion and uncertainty which in itself has been materially detrimental to the efficient functioning of the markets as well as previously successful investment strategies.

The Fund may incur major losses in the event of disrupted markets and other extraordinary events in which historical pricing relationships become materially distorted. The risk of loss from pricing distortions is compounded by the fact that in disrupted markets many positions become illiquid, making it difficult or impossible to close out positions against which the markets are moving. The financing available to market participants from their banks, dealers and other counterparties is typically reduced in disrupted markets. Such a reduction may result in substantial losses to the affected market participants. Market disruptions may from time to time cause dramatic losses, and such events can result in otherwise historically low-risk strategies performing with unprecedented volatility and risk.

Regulatory Changes or Actions, Including the Implementation of the Dodd-Frank Act, May Alter the Operations and Profitability of the Fund.

The regulation of commodity interest transactions in the United States is a rapidly changing area of law and is subject to ongoing modification by governmental and judicial action. Considerable regulatory attention has been focused on non-traditional investment pools that are publicly distributed in the United States. The Dodd-Frank Act seeks to regulate markets, market participants and financial instruments that previously have been unregulated and substantially alters the regulation of many other markets, market participants and financial instruments. Because many provisions of the Dodd-Frank Act require rulemaking by the applicable regulators before becoming fully effective and the Dodd-Frank Act mandates multiple agency reports and studies (which could result in additional legislative or regulatory action), it is difficult to predict the impact of the Dodd-Frank Act on the Fund, the Managing Owner, and the markets in which the Fund may invest, the Net Asset Value of the Fund or the market price of the Shares. The Dodd-Frank Act could result in the Fund’s investment strategy becoming non-viable or non-economic to implement. Therefore, the Dodd-Frank Act and regulations adopted pursuant to the Dodd-Frank Act could have a material adverse impact on the profit potential of the Fund and in turn the value of your Shares.

Lack of Independent Advisers Representing Investors.

The Managing Owner has consulted with counsel, accountants and other advisers regarding the formation and operation of the Fund. No counsel has been appointed to represent you in connection with the offering of the Shares. Accordingly, you should consult your own legal, tax and financial advisers regarding the desirability of an investment in the Shares.

Possibility of Termination of the Fund May Adversely Affect Your Portfolio.

15

The Managing Owner may withdraw from the Fund upon 120 days’ notice, which would cause the Fund to terminate unless a substitute managing owner were obtained. Owners of 50% of the Shares have the power to terminate the Fund. If it is so exercised, investors who may wish to continue to invest in the Index through the vehicle of the Fund will have to find another vehicle, and may not be able to find another vehicle that offers the same features as the Fund. Such detrimental developments could cause you to liquidate your investments and upset the overall maturity and timing of your investment portfolio. If the registrations with the CFTC or memberships in the NFA of the Managing Owner or the Commodity Broker were revoked or suspended, such entity would no longer be able to provide services to the Fund.

Shareholders Do Not Have the Rights Enjoyed by Investors in Certain Other Vehicles.

As interests in an investment trust, the Shares have none of the statutory rights normally associated with the ownership of shares of a corporation (including, for example, the right to bring “oppression” or “derivative” actions). In addition, the Shares have limited voting and distribution rights (for example, Shareholders do not have the right to elect directors and the Fund is not required to pay regular distributions, although the Fund may pay distributions in the discretion of the Managing Owner).

An Investment in the Shares May Be Adversely Affected by Competition From Other Methods of Investing in Commodities.

The Fund is a relatively new type of investment vehicle. They compete with other financial vehicles, including other commodity pools, hedge funds, traditional debt and equity securities issued by companies in the commodities industry, other securities backed by or linked to such commodities, and direct investments in the underlying commodities or commodity futures contracts. Market and financial conditions, and other conditions beyond the Managing Owner’s control, may make it more attractive to invest in other financial vehicles or to invest in such commodities directly, which could limit the market for the Shares and reduce the liquidity of the Shares.

Competing Claims Over Ownership of Intellectual Property Rights Related to the Fund Could Adversely Affect the Fund and an Investment in the Shares.

While the Managing Owner believes that all intellectual property rights needed to operate the Fund are either owned by or licensed to the Managing Owner or have been obtained, third parties may allege or assert ownership of intellectual property rights which may be related to the design, structure and operations of the Fund. To the extent any claims of such ownership are brought or any proceedings are instituted to assert such claims, the negotiation, litigation or settlement of such claims, or the ultimate disposition of such claims in a court of law if a suit is brought, may adversely affect the Fund and an investment in the Shares, for example, resulting in expenses or damages or the termination of the Fund.

“Backwardation” or “Contango” in the Market Prices of the Index Commodities Will Affect the Value of Your Shares.

As the futures contracts that underlie the Index near expiration, they are replaced by contracts that have a later expiration. Thus, for example, a contract purchased and held in August 2012 may specify an October 2012 expiration. As that contract nears expiration, it may be replaced by selling the October 2012 contract and purchasing the contract expiring in December 2012. This process is referred to as “rolling.” Historically, the prices of Light Sweet Crude Oil and Heating Oil have frequently been higher for contracts with shorter-term expirations than for contracts with longer-term expirations, which is referred to as “backwardation.” In these circumstances, absent other factors, the sale of the October 2012 contract would take place at a price that is higher than the price at which the December 2012 contract is purchased, thereby creating a gain in connection with rolling. While Light Sweet Crude Oil and Heating Oil have historically exhibited consistent periods of backwardation, backwardation will likely not exist in these markets at all times. The absence of backwardation in Light Sweet Crude Oil and Heating Oil will adversely affect the value of the Index and, accordingly, decrease the value of your Shares.

Conversely, certain of the Index Commodities historically exhibit “contango” markets rather than backwardation. Contango markets are those in which the prices of contracts are higher in the distant delivery months than in the nearer delivery months due to the costs of long-term storage of a physical commodity prior to delivery or other factors. Although certain of the Index Commodities may have historically exhibited consistent periods of contango, contango will likely not exist in these markets at all times. Contango in certain of the Index Commodities will adversely affect the value of the Index and, accordingly, decrease the value of the Shares.

Although the roll method of the Index may minimize the roll losses due to contango and may maximize the roll benefits due to backwardation, there can be no assurance that this outcome will occur.

The Value of the Shares Will be Adversely Affected if the Fund is Required to Indemnify the Trustee or the Managing Owner.

Under the Trust Agreement, the Trustee and the Managing Owner have the right to be indemnified for any liability or expense either incurs without negligence or misconduct. That means the Managing Owner may require the assets of the Fund to be sold in order to cover losses or liability suffered by it or by the Trustee. Any sale of that kind would reduce the net asset value of the Fund and the value of the Shares.

16

The Net Asset Value Calculation of the Fund May Be Overstated or Understated Due to the Valuation Method Employed When a Settlement Price is not Available on the Date of Net Asset Value Calculation.

Calculating the net asset value of the Fund includes, in part, any unrealized profits or losses on open commodity futures contracts. Under normal circumstances, the net asset value of the Fund reflects the settlement price of open commodity futures contracts on the date when the net asset value is being calculated. However, if a commodity futures contract traded on an exchange (both U.S. and non-U.S. exchanges) could not be liquidated on such day (due to the operation of daily limits or other rules of the exchange upon which that position is traded or otherwise), the Managing Owner may value such futures contract pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards. In such a situation, there is a risk that the calculation of the net asset value of the Fund on such day will not accurately reflect the realizable market value of such commodity futures contract. For example, daily limits are generally triggered in the event of a significant change in market price of a commodity futures contract. Therefore, as a result of the daily limit, the current settlement price is unavailable. Because the Managing Owner may value such futures contract pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards, there is a risk that the resulting calculation of the net asset value of the Fund could be under or overstated, perhaps to a significant degree.

Although the Shares are Limited Liability Investments, Certain Circumstances such as Bankruptcy of the Fund or Indemnification of the Fund by the Shareholders will Increase a Shareholder’s Liability.

The Shares are limited liability investments; investors may not lose more than the amount that they invest plus any profits recognized on their investment. However, Shareholders could be required, as a matter of bankruptcy law, to return to the estate of the Fund any distribution they received at a time when the Fund was in fact insolvent or in violation of its Trust Agreement. In addition, although the Managing Owner is not aware of this provision ever having been invoked in the case of any public futures fund, Shareholders agree in the Trust Agreement that they will indemnify the Fund for any harm suffered by it as a result of

• Shareholders’ actions unrelated to the business of the Fund, or

• taxes imposed on the Shares by the states or municipalities in which such investors reside.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

The Fund does not own or use physical properties in the conduct of its business. Its assets consist of futures contracts, cash, United States Treasury Obligations and may consist of other high credit quality short-term fixed income securities. The Managing Owner’s headquarters are located at 60 Wall Street, New York, New York 10005.

ITEM 3. LEGAL PROCEEDINGS

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

17

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

The Shares of the Fund traded on the NYSE Alternext from February 3, 2006 to November 25, 2008 and have been trading on the NYSE Arca since November 25, 2008 under the symbol “DBC.”

The following table sets forth, for the calendar quarters indicated, the high and low sales prices per Share, as reported on the applicable exchange.

	Shares
Quarter ended	High		Low
March 31, 2011	$	30.51	$	27.12
June 30, 2011	$	31.92	$	28.25
September 30, 2011	$	30.84	$	25.75
December 31, 2011	$	28.54	$	25.57
Quarter ended	High		Low
March 31, 2010	$	25.72	$	22.38
June 30, 2010	$	24.70	$	21.25
September 30, 2010	$	24.11	$	21.20
December 31, 2010	$	27.55	$	24.08

Holders

As of December 31, 2011, the Fund had 286,644 holders of record of its Shares.

Distributions

The Managing Owner has sole discretion in determining what distributions, if any, the Fund will make to Shareholders.

The Fund paid no distributions for the Year Ended December 31, 2011 or for the Year Ended December 31, 2010.

Sales of Unregistered Securities and Use of Proceeds of Registered Securities

(a) There have been no unregistered sales of the Fund’s securities. No Fund securities are authorized for issuance by the Fund under equity compensation plans.

(b) Non-Applicable.

(c) The following table summarizes the redemptions by Authorized Participants during the Years Ended December 31, 2011, 2010 and 2009:

Period of Redemption	Total Number of Shares Redeemed		Average Price Paid per Share
Year Ended December 31, 2011		40,200,000	$	27.89
Year Ended December 31, 2010		38,400,000	$	22.79
Year Ended December 31, 2009		8,000,000	$	21.81

18

ITEM 6. SELECTED FINANCIAL DATA

The following table summarizes the relevant 2011, 2010, 2009, 2008 and 2007 financial data for the Fund and should be read in conjunction with the Fund’s financial statements, and the notes and schedules related thereto, which are included in this report.

	Year Ended
	December 31, 2011			December 31, 2010			December 31, 2009			December 31, 2008			December 31, 2007
Interest Income	$	3,659,156		$	5,081,450		$	3,427,808		$	35,937,704		$	46,678,838
Net investment income (loss)	$	(47,459,748	)	$	(34,384,042	)	$	(18,760,783	)	$	20,224,319		$	38,609,893
Net realized and net change in unrealized gains/(losses) on United States Treasury Obligations and futures	$	(185,636,878	)	$	541,672,525		$	499,850,835		$	(456,010,180	)	$	291,658,800
Net Income (Loss)	$	(233,096,626	)	$	507,288,483		$	481,090,052		$	(435,785,861	)	$	330,268,693
Net Income (Loss) per Share	$	(0.74	)	$	2.92		$	3.23		$	(9.70	)	$	7.67
Distribution per Share	$	—		$	—		$	—		$	0.34		$	0.76
Net increase (decrease) in unrestricted cash	$	473,125,817		$	(190,650,013	)	$	(1,471,361,635	)	$	1,713,943,642		$	(42,580,605	)
	As of December 31, 2011			As of December 31, 2010			As of December 31, 2009			As of December 31, 2008			As of December 31, 2007
Total Assets	$	5,471,285,121		$	5,110,292,129		$	4,390,954,240		$	1,199,952,828		$	1,748,716,168
Shares NAV	$	26.83		$	27.57		$	24.65		$	21.42		$	31.46
General Shares NAV	$	26.83		$	27.58		$	24.65		$	21.43		$	31.48

Selected Quarterly Financial Data (Unaudited)

	For the Three Months Ended March 31, 2011			For the Three Months Ended June 30, 2011			For the Three Months Ended September 30, 2011			For the Three Months Ended December 31, 2011
Interest Income (loss)	$	1,777,985		$	1,070,716		$	567,628		$	242,827
Net investment income (loss)	$	(11,075,379	)	$	(12,297,351	)	$	(12,541,638	)	$	(11,545,380	)
Net realized and net change in unrealized gains/(losses) on United States Treasury Obligations and Futures	$	598,208,725		$	(294,134,602	)	$	(680,594,285	)	$	190,883,284
Net Income/(loss)	$	587,133,346		$	(306,431,953	)	$	(693,135,923	)	$	179,337,904
Increase/(decrease) in Net Asset Value	$	1,290,095,562		$	(367,367,645	)	$	(597,236,219	)	$	35,114,944
Net Income (loss) per Share	$	3.01		$	(1.42	)	$	(3.24	)	$	0.91
	For the Three Months Ended March 31, 2010			For the Three Months Ended June 30, 2010			For the Three Months Ended September 30, 2010			For the Three Months Ended December 31, 2010
Interest Income (loss)	$	709,492		$	1,498,828		$	1,461,215		$	1,411,915
Net investment income (loss)	$	(8,783,821	)	$	(8,690,226	)	$	(7,926,969	)	$	(8,983,026	)
Net realized and net change in unrealized gains/(losses) on United States Treasury Obligations and Futures	$	(173,377,658	)	$	(383,721,539	)	$	458,649,574		$	640,122,148
Net Income/(loss)	$	(182,161,479	)	$	(392,411,765	)	$	450,722,605		$	631,139,122
Increase/(decrease) in Net Asset Value	$	298,502,211		$	(376,129,829		$	104,519,373		$	691,929,727
Net Income (loss) per Share	$	(1.05	)	$	(1.92	)	$	2.42		$	3.47

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This information should be read in conjunction with the financial statements and notes included in Item 8 of Part II of this Annual Report (the “Report”). The discussion and analysis which follows may contain trend analysis and other forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934 which reflect our current views with respect to future events and financial results. Words such as “anticipate,” “expect,” “intend,” “plan,” “believe,” “seek,” “outlook” and “estimate,” as well as similar words and phrases, signify forward-looking statements. PowerShares DB Commodity Index Tracking Fund’s (the “Fund”) forward-looking statements are not guarantees of future results and conditions and important factors, risks and uncertainties may cause our actual results to differ materially from those expressed in our forward-looking statements.

You should not place undue reliance on any forward-looking statements. Except as expressly required by the Federal securities laws, DB Commodity Services LLC (the “Managing Owner”), undertakes no obligation to publicly update or revise any forward-looking statements or the risks, uncertainties or other factors described in this Report, as a result of new information, future events or changed circumstances or for any other reason after the date of this Report.

Overview/Introduction

Prior to the close of business on December 31, 2010, the Fund invested substantially all of its assets in the DB Commodity Index Tracking Master Fund (the “Master Fund”). After the determination of the net asset value of the Master Fund on December 31, 2010, the Master Fund transferred and distributed all of its assets and liabilities to the Fund and terminated. Effective January 1, 2011, the reorganized Fund has performed all of the necessary functions in order to continue normal Fund operations. The collapse of the master-feeder structure had no effect on the operations or processes of the Fund. All reference to historical results of the Fund include results of the Master Fund where the context requires.

The Fund seeks to track changes, whether positive or negative, in the level of the DBIQ Optimum Yield Diversified Commodity Index Excess Return^TM (the “Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The Index is intended to reflect the change in market value of certain commodities. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the “Index Commodities”).

From May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The commodities comprising the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn and Wheat. From October 19, 2009 to December 31, 2010, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Excess Return™ (the “Interim Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. After December 31, 2010, the Fund commenced tracking the Index. The Fund’s Interim Index is identical to the Index except with respect to the following non-substantive changes: (i) name of Index, and (ii) inception date of Index for Commodity Futures Trading Commission (the “CFTC”) purposes. Except as provided in the immediately preceding sentence, all prior underlying formulae, data (e.g., closing levels, measure of volatility, all other numerical statistics and measures) and all other characteristics (e.g., Base Date, Index Sponsor, rolling, etc.) with respect to the Interim Index is identical to the Index. The Index is intended to reflect the change in market value of certain commodities. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the “Index Commodities”).

The Fund pursues its investment objective by investing in a portfolio of exchange-traded futures contracts in the Index Commodities. The notional amounts of each Index Commodity included in the Index are broadly in proportion to historic levels of the world’s production and stocks of the Index Commodities. The Fund holds United States Treasury Obligations and other high credit quality short-term fixed income securities for deposit with the Fund’s Commodity Broker as margin.

20

The CFTC and/or commodity exchanges, as applicable, impose position limits on market participants trading in certain commodities included in the Index. As disclosed in the Fund’s Prospectus, if the Managing Owner determines in its commercially reasonable judgment that it has become impracticable or inefficient for any reason for the Fund to gain full or partial exposure to any Index Commodity by investing in a specific Index Contract that is a part of the Index, the Fund may invest in a futures contract referencing the particular Index Commodity other than the Index Contract or, in the alternative, invest in other futures contracts not based on the particular Index Commodity if, in the commercially reasonable judgment of the Managing Owner, such futures contracts tend to exhibit trading prices that correlate with such Index Commodity. Because the Fund is approaching or has reached position limits with respect to certain futures contracts comprising the Index, the Fund has commenced investing in other futures contracts based on commodities that comprise the Fund’s Index and in futures contracts based on commodities other than commodities that comprise the Fund’s Index. Please see http://dbfunds.db.com/dbc/weights.aspx with respect to the most recently available weighted composition of the Fund and http://dbfunds.db.com/dbc/index.aspx with respect to the composition of the Index on the Base Date.

DBIQ™, DBLCI™ and Deutsche Bank Liquid Commodity Index™ are trademarks of Deutsche Bank AG London (the “Index Sponsor”). Trademark applications in the United States are pending with respect to both the Fund and the Index. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademarks. The Index Sponsor is an affiliate of the Fund and the Managing Owner.

Under the Second Amended and Restated Declaration of Trust and Trust Agreement of the Fund (the “Trust Agreement”), Wilmington Trust Company, the Trustee of the Fund, has delegated to the Managing Owner the exclusive management and control of all aspects of the business of the Fund. The Trustee will have no duty or liability to supervise or monitor the performance of the Managing Owner, nor will the Trustee have any liability for the acts or omissions of the Managing Owner.

The Index Sponsor obtains information for inclusion in, or for use in the calculation of, the Index from sources the Index Sponsor considers reliable. None of the Index Sponsor, the Managing Owner, the Fund or any of their respective affiliates accepts responsibility for or guarantees the accuracy and/or completeness of the Index or any data included in the Index.

The Shares are intended to provide investment results that generally correspond to the changes, positive or negative, in the levels of the Index over time. The value of the Shares is expected to fluctuate in relation to changes in the value of the Fund’s portfolio. The market price of the Shares may not be identical to the net asset value per Share, but these two valuations are expected to be very close.

Margin Calls

Like other futures and derivatives traders, the Fund will be subject to margin calls from time-to-time. The term “margin” has a different meaning in the context of futures contracts and other derivatives than it does in the context of securities. In particular, “margin” on a futures position does not constitute a borrowing of money or the collateralization of a loan. The Fund does not borrow money.

To establish a position in an exchange-traded futures contract, the Fund makes a deposit of “initial margin.” The amount of initial margin required to be deposited in order to establish a position in an exchange-traded futures contract varies from instrument to instrument depending, generally, on the historical volatility of the futures contract in question. Determination of the amount of the required initial margin deposit in respect of a particular contract is made by the exchange on which the contract is listed. To establish a long position in an over-the-counter instrument, the counterparty may require an analogous deposit of collateral, depending upon the anticipated volatility of the instrument and the creditworthiness of the person seeking to establish the position. The deposit of initial margin provides assurance to futures commission merchants and clearing brokers involved in the settlement process that sufficient resources are likely to be on deposit to enable a client’s position to be closed by recourse to the initial margin deposit should the client fail to meet a demand for variation margin, even if changes in the value of the contract in question, which are marked to market from day to day, continue to reflect the contract’s historical volatility. Collateral deposited in support of an over-the-counter instrument serves a similar purpose.

Once a position has been established on a futures exchange, “variation margin” generally is credited or assessed at least daily to reflect changes in the value of the position. In contrast to “initial margin,” “variation margin” represents a system of marking to market the futures contract’s value. Thus, traders in exchange-traded futures contracts are assessed daily in an amount equal to that day’s accumulated losses in respect of any open position (or are credited daily with accumulated gains in respect of such position). Collateral may move between the parties to an over-the-counter instrument in a similar manner as gains or losses accumulate in the instrument. As with initial margin, variation margin serves to secure the obligations of the investor under the contract and to protect those involved in the settlement process against the possibility that a client will have insufficient resources to meet its contractual obligations. Collateral deposited in support of an over-the-counter instrument serves a similar purpose. Like initial margin (or an equivalent deposit of collateral), variation margin (or an equivalent deposit of collateral) does not constitute a borrowing of money, is not considered to be part of the contract purchase price and is returned upon the contract’s termination unless it is used to cover a loss in the contract position. United States Treasury Obligations are used routinely to collateralize OTC derivative positions, and are deposited routinely as margin to collateralize futures positions. The Fund may liquidate United States Treasury Obligations to meet an initial or variation margin requirement.

21

Performance Summary

This Report covers the three months ended December 31, 2011, 2010 and 2009 ((herein referred to as the “Three Months Ended December 31, 2011”, the “Three Months Ended December 31, 2010” and the “Three Months Ended December 31, 2009”, respectively), and the years ended December 31, 2011, 2010 and 2009 (herein referred to as the “Year Ended December 31, 2011”, the “Year Ended December 31, 2010” and the “Year Ended December 31, 2009”, respectively).

Performance of the Fund and the exchange traded Shares are detailed below in “Results of Operations”. Past performance of the Fund is not necessarily indicative of future performance.

The Index is intended to reflect the change in market value of the Index Commodities. In turn, the notional amounts of each Index Commodity are broadly in proportion to historic levels of the world’s production and stocks of such Index Commodities. The DBIQ Optimum Yield Diversified Commodity Index Total Return ™, (the “DBIQ-OY Diversified TR™”) and the Deutsche Bank Liquid Commodity Index Optimum Yield Diversified Total Return™ (the “DBLCI Diversified TR™”) consists of the Index plus 3-month United States Treasury Obligations returns. (Because the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity-Index Optimum Yield Excess Return™ (“DBLCI-OY ER™”) to October 19, 2009, references to the DBLCI-OY TR™ and the DBLCI Diversified TR™ have been included). Past Index results are not necessarily indicative of future changes, positive or negative, in the Index closing levels. Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Total Return™, or DBLCI–OY Diversified TR™, consists of the Index plus 3-month United States Treasury Obligations returns. Past Index results are not necessarily indicative of future changes, positive or negative, in the Index closing levels.

The section “Summary of the DBIQ–OY Diversified TR™ and Underlying Index Commodity Returns for the Three Months Ended December 31, 2011 and the Year Ended December 31, 2011, Summary of the DBLCI-OY TR™ and Underlying Index Commodity Returns for the Three Months Ended December 31, 2010 and the Year Ended December 31, 2010 and Summary of the DBLCI-OYTR™ and Underlying Index Commodity Returns for the Three Months Ended December 31, 2009 and the Year Ended December 31, 2009” below provides an overview of the changes in the closing levels of DBIQ–OY Diversified TR™ by disclosing the change in market value of each underlying component Index Commodity through a “surrogate” (and analogous) index plus 3-month United States Treasury Obligations returns. Please note also that the Fund’s objective is to track the Index (not the DBLCI-OYTR™ or the DBLCI–OY Diversified TR™), and the Fund does not attempt to outperform or underperform the Index.

Summary of the DBIQ-OY Diversified TR™ and Underlying Index Commodity Returns for the Three Months Ended December 31, 2011 and the Year Ended December 31, 2011, Summary of the DBLCI-OY TR™ and Underlying Index Commodity Returns for the Three Months Ended December 31, 2010 and the Year Ended December 31, 2010 and Summary of the DBLCI-OYTR™ and Underlying Index Commodity Returns for the Three Months Ended December 31, 2009 and the Year Ended December 31, 2009

	AGGREGATE RETURNS
Underlying Index	Three Months Ended December 31, 2011			Three Months Ended December 31, 2010			Three Months Ended December 31, 2009			Three Months Ended December 31, 2009
DB Crude Oil Indices		22.94	%		11.10	%		10.47	%		10.47	%
DB Heating Oil Indices		7.01	%		10.37	%		9.21	%		9.21	%
DB Aluminum Indices		-6.51	%		4.23	%		15.57	%		15.57	%
DB Gold Indices		-3.53	%		8.45	%		8.53	%		8.53	%
DB Corn Indices		5.82	%		20.10	%		13.62	%		13.62	%
DB Wheat Indices		1.41	%		16.77	%		12.48	%		12.48	%
RBOB Gasoline Indices		3.50	%		12.34	%		11.26	%		N/A
Natural Gas Indices		-22.33	%		2.73	%		-7.10	%		N/A
Brent Crude Indices		8.40	%		14.41	%		9.59	%		N/A
Silver Indices		-7.07	%		41.59	%		1.05	%		N/A
Zinc Indices		-1.82	%		10.63	%		29.32	%		N/A
Copper Grade A Indices		8.01	%		20.02	%		19.56	%		N/A
Soybeans Indices		0.57	%		19.19	%		9.25	%		N/A

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Sugar Indices		-5.25	%		31.44	%		2.01	%		N/A
AGGREGATE RETURNS		3.75	%		14.25	%		10.08	%		11.31	%
	AGGREGATE RETURNS*
Underlying Index	Year Ended December 31, 2011			Year Ended December 31, 2010			Year Ended December 31, 2009			Year Ended December 31, 2009
DB Crude Oil Indices		2.02	%		3.34	%		36.28	%		36.28	%
DB Heating Oil Indices		10.06	%		8.13	%		15.44	%		15.44	%
DB Aluminum Indices		-20.09	%		6.20	%		32.58	%		32.58	%
DB Gold Indices		9.48	%		28.92	%		22.95	%		22.95	%
DB Corn Indices		11.61	%		35.22	%		-13.32	%		-13.32	%
DB Wheat Indices		-31.47	%		16.01	%		-21.84	%		-21.84	%
RBOB Gasoline Indices		9.96	%		9.92	%		51.86	%		N/A
Natural Gas Indices		-37.60	%		-35.37	%		-44.29	%		N/A
Brent Crude Indices		10.59	%		13.98	%		29.09	%		N/A
Silver Indices		-10.24	%		82.53	%		48.75	%		N/A
Zinc Indices		-26.87	%		-7.41	%		97.61	%		N/A
Copper Grade A Indices		-19.51	%		29.82	%		133.81	%		N/A
Soybeans Indices		-9.34	%		30.19	%		0.73	%		N/A
Sugar Indices		-10.47	%		1.29	%		63.01	%		N/A
AGGREGATE RETURNS		-2.39	%		11.93	%		27.87	%		16.15	%

* During the period from October 19, 2009 to December 31, 2010, the Fund tracked the Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Excess Return™. During this same period, the Fund did not track the changes in closing levels of DBLCI–OY ER™.

If the Fund’s interest income from its holdings of fixed income securities were to exceed the Fund’s fees and expenses, the aggregate return on an investment in the Fund is expected to outperform the DBIQ–OY Diversified ER™ (the DBLCI OYER™ prior to October 19, 2009) and underperform the DBIQ–OY Diversified TR™ (the DBLCI OYTR™ prior to October 19, 2009). The only difference between (i) the Index (the “Excess Return Index”) and (ii) the DBIQ-OY Diversified TR™ (the “Total Return Index”) is that the Excess Return Index does not include interest income from a hypothetical basket of fixed income securities while the Total Return Index does include such a component. Thus, the difference between the Excess Return Index and the Total Return Index is attributable entirely to the hypothetical interest income from this hypothetical basket of fixed income securities. If the Fund’s interest income from its holdings of fixed-income securities exceeds the Fund’s fees and expenses, then the amount of such excess is expected to be distributed periodically. The market price of the Shares is expected to closely track the Index (or prior to October 19, 2009, the DBLCI OYER™). The aggregate return on an investment in the Fund over any period is the sum of the capital appreciation or depreciation of the Shares over the period, plus the amount of any distributions during the period. Consequently, the Fund’s aggregate return is expected to outperform the Excess Return Index by the amount of the excess, if any, of its interest income over its fees and expenses but, as a result of the Fund’s fees and expenses, the aggregate return on the Fund is expected to underperform the Total Return Index. If the Fund’s fees and expenses were to exceed the Fund’s interest income from its holdings of fixed income securities, the aggregate return on an investment in the Fund is expected to underperform the Excess Return Indexes.

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Net Asset Value

Net asset value means the total assets of the Fund, including, but not limited to, all futures, cash and investments less total liabilities of the Fund, each determined on the basis of U.S. generally accepted accounting principles, consistently applied under the accrual method of accounting. In particular, net asset value includes any unrealized appreciation or depreciation on open commodity futures contracts, and any other credit or debit accruing to the Fund but unpaid or not received by the Fund. All open commodity futures contracts will be calculated at their then current market value, which will be based upon the settlement price for that particular commodity futures contract traded on the applicable exchange on the date with respect to which net asset value is being determined; provided, that if a commodity futures contract could not be liquidated on such day, due to the operation of daily limits or other rules of the exchange upon which that position is traded or otherwise, the Managing Owner may value such futures contract pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards. The Managing Owner may in its discretion (and under circumstances, including, but not limited to, periods during which a settlement price of a futures contract is not available due to exchange limit orders or force majeure type events such as systems failure, natural or man-made disaster, act of God, armed conflict, act of terrorism, riot or labor disruption or any similar intervening circumstance) value any asset of the Fund pursuant to such other principles as the Managing Owner deems fair and equitable so long as such principles are consistent with normal industry standards. Interest earned on the Fund’s brokerage account is accrued monthly. The amount of any distribution is a liability of the Fund from the day when the distribution is declared until it is paid.

Critical Accounting Policies

The Fund’s critical accounting policies are as follows:

Preparation of the financial statements and related disclosures in conformity with U.S. generally accepted accounting principles requires the application of appropriate accounting rules and guidance, as well as the use of estimates, and requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenue and expense and related disclosure of contingent assets and liabilities during the reporting period of the financial statements and accompanying notes. The financial statements of the Fund include the consolidated financial statements of the Fund and Master Fund when applicable. As described above, the Fund was originally formed as a master-feeder structure and such structure was collapsed on December 31, 2010. The financial statements reflect consolidation of the Master Fund for 2009. The Fund’s application of these policies involves judgments and actual results may differ from the estimates used.

The Fund holds a significant portion of its assets in futures contracts and United States Treasury Obligations, both of which are recorded on a trade date basis and at fair value in the financial statements, with changes in fair value reported in the statement of income and expenses.

The use of fair value to measure financial instruments, with related unrealized gains or losses recognized in earnings in each period is fundamental to the Fund’s financial statements. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price).

In determining fair value of United States Treasury Obligations and commodity futures contracts, the Fund uses unadjusted quoted market prices in active markets. FASB fair value measurement and disclosure guidance requires a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The objective of a fair value measurement is to determine the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (an exit price). The hierarchy gives the highest priority to unadjusted quoted prices for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. See Note 4(c) within the financial statements in Item 8 for further information.

When market closing prices are not available, the Managing Owner may value an asset of the Fund pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards.

Realized gains (losses) and changes in unrealized gain (loss) on open positions are determined on a specific identification basis and recognized in the statement of income and expenses in the period in which the contract is closed or the changes occur, respectively.

Interest income on United States Treasury Obligations is recognized on an accrual basis when earned. Premiums and discounts are amortized or accreted over the life of the United States Treasury Obligations.

Market Risk

Trading in futures contracts involves the Fund entering into contractual commitments to purchase a particular commodity at a specified date and price. The market risk associated with the Fund’s commitments to purchase commodities is limited to the gross or face amount of the contracts held.

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The Fund’s exposure to market risk is also influenced by a number of factors including the volatility of interest rates and foreign currency exchange rates, the liquidity of the markets in which the contracts are traded and the relationships among the contracts held. The inherent uncertainty of the Fund’s trading as well as the development of drastic market occurrences could ultimately lead to a loss of all or substantially all of the investors’ capital.

Credit Risk

When the Fund enters into futures contracts, the Fund is exposed to credit risk that the counterparty to the contract will not meet its obligations. The counterparty for futures contracts traded on United States and on most foreign futures exchanges is the clearing house associated with the particular exchange. In general, clearing houses are backed by their corporate members who may be required to share in the financial burden resulting from the nonperformance by one of their members and, as such, should significantly reduce this credit risk. In cases where the clearing house is not backed by the clearing members (i.e., some foreign exchanges), it may be backed by a consortium of banks or other financial institutions. There can be no assurance that any counterparty, clearing member or clearinghouse will meet its obligations to the Fund.

The Commodity Broker, when acting as the Fund’s futures commission merchant in accepting orders for the purchase or sale of domestic futures contracts, is required by CFTC regulations to separately account for and segregate as belonging to the Fund all assets of the Fund relating to domestic futures trading and the Commodity Broker is not allowed to commingle such assets with other assets of the Commodity Broker. In addition, CFTC regulations also require the Commodity Broker to hold in a secure account assets of the Fund related to foreign futures trading. Also see Item 1A.—Risk Factors—“Failure of Futures Commission Merchants or Commodity Brokers to Segregate Assets May Increase Losses; Despite Segregation of Assets, The Fund Remains at Risk of Significant Losses Because The Fund May Only Receive a Pro-Rata Share of the Assets, or No Assets at All.”

Liquidity

All of the Fund’s source of capital is derived from the Fund’s offering of Shares to Authorized Participants. The Fund in turn allocates its net assets to commodities trading. A significant portion of the net asset value is held in United States Treasury Obligations and cash, which are used as margin for the Fund’s trading in commodities. The percentage that United States Treasury Obligations bear to the total net assets will vary from period to period as the market values of the Fund’s commodity interests change. The balance of the net assets is held in the Fund’s commodity trading account. Interest earned on the Fund’s interest-bearing funds is paid to the Fund.

The Fund’s commodity contracts may be subject to periods of illiquidity because of market conditions, regulatory considerations or for other reasons. For example, commodity exchanges generally have the ability to limit fluctuations in certain commodity futures contract prices during a single day by regulations referred to as “daily limits.” During a single day, no trades may be executed at prices beyond the daily limit. Once the price of a particular futures contract for a particular commodity has increased or decreased by an amount equal to the daily limit, positions in the commodity futures contract can neither be taken nor liquidated unless the traders are willing to effect trades at or within the limit. Commodity futures prices have occasionally moved the daily limit for several consecutive days with little or no trading. Such market conditions could prevent the Fund from promptly liquidating its commodity futures positions.

Because the Fund trades futures contracts, its capital is at risk due to changes in the value of futures contracts (market risk) or the inability of counterparties (including exchange clearinghouses) to perform under the terms of the contracts (credit risk).

Authorized Participants may also redeem Baskets of Shares. On any business day, an Authorized Participant may place an order with the Managing Owner to redeem one or more Baskets. Redemption orders must be placed by 10:00 a.m., New York time. The day on which the Managing Owner receives a valid redemption order is the redemption order date. Redemption orders are irrevocable. The redemption procedures allow only Authorized Participants to redeem Baskets. Individual Shareholders may not redeem directly from the Fund. By placing a redemption order, an Authorized Participant agrees to deliver the Baskets to be redeemed through DTC’s book-entry system to the Fund not later than noon, New York time, on the business day immediately following the redemption order date. By placing a redemption order, and prior to receipt of the redemption proceeds, an Authorized Participant’s DTC account is charged the non-refundable transaction fee due for the redemption order.

Cash Flows

The primary cash flow activity of the Fund is to raise capital from Authorized Participants through the issuance of Shares. This cash is used to invest in United States Treasury Obligations and to meet margin requirements as a result of the positions taken in futures contracts to match the fluctuations of the Index the Fund is tracking.

Operating Activities

Net cash flow provided by and (used for) operating activities was $(109.8) million, $(402.2) million and $(4,179.0) million during the Years Ended December 31, 2011, 2010 and 2009, respectively. These amounts primarily include net purchases and sales of United States Treasury Obligations which are held at fair value on the statement of financial condition.

25

During the Year Ended December 31, 2011, $23,184.0 million was paid to purchase United States Treasury Obligations and $22,365.2 million was received from sales and maturing contracts. During the Year Ended December 31, 2010, $16,965.7 million was paid to purchase United States Treasury Obligations and $16,390.1 million was received from sales and maturing contracts. During the Year Ended December 31, 2009, $11,955.5 million was paid to purchase United States Treasury Obligations and $8,225.2 million was received from sales and maturing contracts. Unrealized appreciation on United States Treasury Obligations and futures decreased by $939.7 million, increased by $342.1 million and increased by $910.2 million during the Years Ended December 31, 2011, 2010 and 2009, respectively.

Financing Activities

The Fund’s net cash flow provided by and (used for) financing activities was $583.0 million, $211.5 million and $2,707.6 million during the Years Ended December 31, 2011, 2010 and 2009, respectively. This included $1,714.8 million, $1,086.6 million and $2,882.1 million from the sale of Shares to Authorized Participants during the Years Ended December 31, 2011, 2010 and 2009, respectively.

Results of Operations

FOR THE THREE MONTHS ENDED DECEMBER 31, 2011, 2010 AND 2009 AND FOR THE YEARS ENDED DECEMBER 31, 2011, 2010 AND 2009

The Fund was launched on January 31, 2006 at $25.00 per Share. The Shares of the Fund traded on the NYSE Alternext from February 3, 2006 to November 25, 2008 and have been trading on the NYSE Arca since November 25, 2008.

The Fund seeks to track changes in the closing levels of the DBIQ Optimum Yield Diversified Commodity Index Excess Return™ (the “Index”), over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The following graphs illustrate changes in (i) the price of the Shares (as reflected by the graph “DBC”), (ii) the Fund’s NAV (as reflected by the graph “DBCNAV”), and (iii) the closing levels of the Index (as reflected by the graph “DBLCIX”). Whenever the interest income earned by the Fund exceeds Fund expenses, the price of the Shares generally has exceeded the levels of the Index primarily because the Share price reflects interest income from the Fund’s collateral holdings whereas the Index does not consider such interest income. There can be no assurances that the price of the Shares will exceed the Index levels.

The Index is a set of rules applied to a body of data and does not represent the results of actual investment or trading. The Index is frictionless, in that it does not take into account fees or expenses associated with investing in the Fund. Also, because it does not represent actual futures positions, the Index is not subject to, and does not take into account the impact of, speculative position limits or certain other similar limitations on the ability of the Fund to trade the Index Commodities. The “TR” version of the Index includes an assumed amount of interest income based on prevailing rates that is adjusted from time to time. The Fund, by contrast, invests actual money and trades actual futures contracts. As a result, the performance of the Fund involves friction, in that fees and expenses impose a drag on performance. The Fund may be subject to speculative position limits and certain other limitations on its ability to trade the Index Commodities, which may compel the Fund to trade futures or other instruments that are not Index Commodities as proxies for the Index Commodities. The interest rate actually earned by the Fund over any period may differ from the assumed amount of interest income factored into the “TR” version of the Index over the same period. All of these factors can contribute to discrepancies between changes in net asset value per Share and changes in the level of the Index over any period of time. Fees and expenses always will tend to cause changes in the net asset value per Share to underperform changes in the value of the Index over any given period, all other things being equal. Actual interest income could be higher or lower than the assumed interest income factored into the “TR” version of the Index, and therefore could cause changes in the net asset value per Share to outperform or underperform changes in the value of the “TR” version Index over any given period, all other things being equal. Similarly, trading futures or other instruments that are not the Index Commodities as proxies for the Index Commodities could cause changes in the net asset value per Share to outperform or underperform changes in the value of the Index over any given period, all other things being equal.

26

COMPARISON OF DBC, DBCNAV AND DBLCIX FOR THE YEARS ENDED

DECEMBER 31, 2011, 2010 AND 2009, AND

FOR THE THREE MONTHS ENDED DECEMBER 31, 2011, 2010, AND 2009

NEITHER THE PAST PERFORMANCE OF THE FUND NOR THE PRIOR INDEX LEVELS AND CHANGES,

POSITIVE OR NEGATIVE, SHOULD BE TAKEN AS AN INDICATION OF THE FUND’S FUTURE PERFORMANCE.

NEITHER THE PAST PERFORMANCE OF THE FUND NOR THE PRIOR INDEX LEVELS AND CHANGES,

POSITIVE OR NEGATIVE, SHOULD BE TAKEN AS AN INDICATION OF THE FUND’S FUTURE PERFORMANCE.

See Additional Legends Below

27

NEITHER THE PAST PERFORMANCE OF THE FUND NOR THE PRIOR INDEX LEVELS AND CHANGES,

POSITIVE OR NEGATIVE, SHOULD BE TAKEN AS AN INDICATION OF THE FUND’S FUTURE PERFORMANCE.

NEITHER THE PAST PERFORMANCE OF THE FUND NOR THE PRIOR INDEX LEVELS AND CHANGES,

POSITIVE OR NEGATIVE, SHOULD BE TAKEN AS AN INDICATION OF THE FUND’S FUTURE PERFORMANCE.

See Additional Legends Below

28

NEITHER THE PAST PERFORMANCE OF THE FUND NOR THE PRIOR INDEX LEVELS AND CHANGES,

POSITIVE OR NEGATIVE, SHOULD BE TAKEN AS AN INDICATION OF THE FUND’S FUTURE PERFORMANCE.

NEITHER THE PAST PERFORMANCE OF THE FUND NOR THE PRIOR INDEX LEVELS AND CHANGES,

POSITIVE OR NEGATIVE, SHOULD BE TAKEN AS AN INDICATION OF THE FUND’S FUTURE PERFORMANCE.

See Additional Legends Below

29

Additional Legends

The Fund seeks to track changes, whether positive or negative, in the level of the DBIQ Optimum Yield Diversified Commodity Index Excess Return^TM (the “Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The Index is intended to reflect the change in market value of certain commodities. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the “Index Commodities”).

From May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The commodities comprising the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn and Wheat. From October 19, 2009 to December 31, 2010, the Fund invested with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Excess Return™ (the “Interim Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. After December 31, 2010, the Fund commenced tracking DBIQ Optimum Yield Diversified Commodity Index Excess Return™ (the “Index”). The Fund’s Interim Index is identical to the Index except with respect to the following non-substantive changes: (i) name of Index, and (ii) inception date of Index for Commodity Futures Trading Commission (the “CFTC”) purposes. Except as provided in the immediately preceding sentence, all prior underlying formulae, data (e.g., closing levels, measure of volatility, all other numerical statistics and measures) and all other characteristics (e.g., Base Date, Index Sponsor, rolling, etc.) with respect to the Interim Index is identical to the Index. Therefore, with respect to the above graphs For the Years Ended December 31, 2011 and December 31, 2010, DBLCIX reflects DBIQ-OY Diversified Commodity Index Excess Return™. With respect to the above graph For the Year Ended December 31, 2009, DBLCIX reflects Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ from January 1, 2009 to the close of business on October 16, 2009, and DBLCIX reflects Deutsche Bank Liquid Commodity Index–Optimum Yield Diversified Excess Return™ from October 19, 2009 to the close of business on December 31, 2009.

DBIQ Optimum Yield Diversified Commodity Index Excess Return™ is an index and does not reflect (i) actual trading and (ii) any fees or expenses.

WHILE THE FUND’S OBJECTIVE IS NOT TO GENERATE PROFIT THROUGH ACTIVE PORTFOLIO MANAGEMENT, BUT IS TO TRACK THE INDEX, BECAUSE THE INDEX WAS ESTABLISHED IN OCTOBER 2010, CERTAIN INFORMATION RELATING TO THE INDEX CLOSING LEVELS MAY BE CONSIDERED TO BE “HYPOTHETICAL.” HYPOTHETICAL INFORMATION MAY HAVE CERTAIN INHERENT LIMITATIONS, SOME OF WHICH ARE DESCRIBED BELOW.

WITH RESPECT TO INDEX DATA, NO REPRESENTATION IS BEING MADE THAT THE INDEX WILL OR IS LIKELY TO ACHIEVE ANNUAL OR CUMULATIVE CLOSING LEVELS CONSISTENT WITH OR SIMILAR TO THOSE SET FORTH HEREIN. SIMILARLY, NO REPRESENTATION IS BEING MADE THAT THE FUND WILL GENERATE PROFITS OR LOSSES SIMILAR TO THE FUND’S PAST PERFORMANCE OR THE HISTORICAL ANNUAL OR CUMULATIVE CHANGES IN THE INDEX CLOSING LEVELS. IN FACT, THERE ARE FREQUENTLY SHARP DIFFERENCES BETWEEN HYPOTHETICAL RESULTS AND THE ACTUAL RESULTS SUBSEQUENTLY ACHIEVED BY INVESTMENT METHODOLOGIES, WHETHER ACTIVE OR PASSIVE.

WITH RESPECT TO INDEX DATA, ONE OF THE LIMITATIONS OF HYPOTHETICAL INFORMATION IS THAT IT IS GENERALLY PREPARED WITH THE BENEFIT OF HINDSIGHT. TO THE EXTENT THAT INFORMATION PRESENTED HEREIN RELATES TO THE PERIOD SEPTEMBER 1997 THROUGH SEPTEMBER 2010, THE INDEX CLOSING LEVELS REFLECT THE APPLICATION OF THE INDEX METHODOLOGY, AND SELECTION OF INDEX COMMODITIES, IN HINDSIGHT.

NO HYPOTHETICAL RECORD CAN COMPLETELY ACCOUNT FOR THE IMPACT OF FINANCIAL RISK IN ACTUAL TRADING. FOR EXAMPLE, THERE ARE NUMEROUS FACTORS, INCLUDING THOSE DESCRIBED UNDER ITEM 1A: “RISK FACTORS” SET FORTH HEREIN, RELATED TO THE COMMODITIES MARKETS IN GENERAL OR TO THE IMPLEMENTATION OF THE FUND’S EFFORTS TO TRACK THE INDEX OVER TIME WHICH CANNOT BE, AND HAVE NOT BEEN, ACCOUNTED FOR IN THE PREPARATION OF THE INDEX INFORMATION SET FORTH ON THE FOLLOWING PAGES, ALL OF WHICH CAN ADVERSELY AFFECT ACTUAL PERFORMANCE RESULTS FOR THE FUND. FURTHERMORE, THE INDEX INFORMATION DOES NOT INVOLVE FINANCIAL RISK OR ACCOUNT FOR THE IMPACT OF FEES AND COSTS ASSOCIATED WITH THE FUND.

THE MANAGING OWNER, AN INDIRECT WHOLLY OWNED SUBSIDIARY OF DEUTSCHE BANK AG, COMMENCED OPERATIONS IN JANUARY 2006. AS MANAGING OWNER, THE MANAGING OWNER AND ITS TRADING PRINCIPALS

30

HAVE BEEN MANAGING THE DAY-TO-DAY OPERATIONS FOR THE FUND AND RELATED PRODUCTS AND MANAGING FUTURES ACCOUNTS. BECAUSE THERE ARE LIMITED ACTUAL TRADING RESULTS TO COMPARE TO THE INDEX CLOSING LEVELS

SET FORTH HEREIN, PROSPECTIVE INVESTORS SHOULD BE PARTICULARLY WARY OF PLACING UNDUE RELIANCE ON THE ANNUAL OR CUMULATIVE INDEX RESULTS.

FOR THE YEARS ENDED DECEMBER 31, 2011, 2010 AND 2009

Fund Share Price Performance

For the Year Ended December 31, 2011, the NYSE Arca market value of each Share decreased 2.58% from $27.55 per Share to $26.84 per Share. The Share price high and low for the Year Ended December 31, 2011 and related change from the Share price from December 31, 2010 was as follows: Shares traded from a high of $31.92 per Share (+15.86%) on April 8, 2011 to a low of $25.57 per Share (-7.19%) on October 4, 2011. No distributions were paid to Shareholders during the Year Ended December 31, 2011. Therefore, the total return for the Fund, on a market value basis, was -2.58%.

For the Year Ended December 31, 2010, the NYSE Arca market value of each Share increased 11.90% from $24.62 per Share to $27.55 per Share. The Share price low and high for the Year Ended December 31, 2010 and related change from the Share price from December 31, 2009 was as follows: Shares traded from a low of $21.20 per Share (-13.89%) on July 2, 2010 to a high of $27.55 per Share (+11.90%) on December 31, 2010. No distributions were paid to Shareholders during the Year Ended December 31, 2010. Therefore, the total return for the Fund, on a market value basis, was 11.90%.

For the Year Ended December 31, 2009, the NYSE Arca market value of each Share increased 16.19% from $21.19 per Share to $24.62 per Share. The Share price low and high for the Year Ended December 31, 2009 and related change from the Share price from December 31, 2008 was as follows: Shares traded from a low of $18.15 per Share (-14.35%) on March 2, 2009 to a high of $24.84 per Share (+17.23%) on December 1, 2009. No distributions were paid to Shareholders during the Year Ended December 31, 2009. Therefore, the total return for the Fund, on a market value basis, was 16.19%.

Fund Share Net Asset Performance

For the Year Ended December 31, 2011, the net asset value of each Share decreased 2.68% from $27.57 per Share to $26.83 per Share. Falling prices in futures contracts prices for Copper, Sugar, Soybean, Aluminum, Silver, Wheat, Natural Gas and Zinc during the Year Ended December 31, 2011 more than offset appreciation for RBOB Gasoline, Crude Oil, Brent Crude, Gold, Heating Oil and Corn during that same period, contributing to an overall 2.39% decrease in the level of the DBIQ–OY Diversified TR™.⁴ No distributions were paid to Shareholders during the Year Ended December 31, 2011. Therefore, the total return for the Fund on a net asset value basis was -2.68%.

Net loss for the Year Ended December 31, 2011 was $233.0 million, resulting from $3.7 million of interest income, net realized gains of $754.1 million, net unrealized losses of $939.7 million and operating expenses of $51.1 million.

For the Year Ended December 31, 2010, the net asset value of each Share increased 11.85% from $24.65 per Share to $27.57 per Share. Appreciation in futures contracts prices for Copper, Sugar, RBOB Gasoline, Silver, Crude Oil, Brent Crude, Aluminum, Gold, Heating Oil, Wheat and Corn during the Year Ended December 31, 2010 more than offset falling prices for Natural Gas and Zinc during that same period, contributing to an overall 11.93% increase in the level of the DBLCI–OY Diversified TR™.⁴ No distributions were paid to Shareholders during the Year Ended December 31, 2010. Therefore, the total return for the Fund on a net asset value basis was 11.85%.

Net income for the Year Ended December 31, 2010 was $507.3 million, resulting from $5.1 million of interest income, net realized gains of $199.6 million, net unrealized gains of $342.1 million and operating expenses of $39.5 million.

For the Year Ended December 31, 2009, the net asset value of each Share increased 15.08% from $21.42 per Share to $24.65 per Share. Appreciation in futures contracts prices for Copper, Zinc, Sugar, RBOB Gasoline, Silver, Crude Oil, Brent Crude, Aluminum, Gold and Heating Oil during the Year Ended December 31, 2009 more than offset falling prices for Natural Gas, Wheat and Corn during that same period, contributing to an overall 27.87% increase in the level of the DBLCI–OY Diversified TR™. No distributions were paid to Shareholders during the Year Ended December 31, 2009. Therefore, the total return for the Fund on a net asset value basis was 15.08%.

4 From October 19, 2009 to December 31, 2010, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Diversified Excess Return™.

31

Net income for the Year Ended December 31, 2009 was $481.1 million, resulting from $3.4 million of interest income, net realized losses of $410.3 million, net unrealized gains of $910.2 million and operating expenses of $22.2 million.

FOR THE THREE MONTHS ENDED DECEMBER 31, 2011, 2010 AND 2009

Fund Share Price Performance

For the Three Months Ended December 31, 2011, the NYSE Arca market value of each Share increased 4.23% from $25.75 per Share to $26.84 per Share. The Share price low and high for the Three Months Ended December 31, 2011 and related change from the Share price on September 30, 2011 was as follows: Shares traded from a low of $25.57 per Share (-0.70%) on October 4, 2011 to a high of $28.54 per Share (+10.83%) on November 8, 2011. No distributions were paid to Shareholders during the Year Ended December 31, 2011. Therefore, the total return for the Fund, on a market value basis, was 4.23%.

For the Three Months Ended December 31, 2010, the NYSE Arca market value of each Share increased 14.27% from $24.11 per Share to $27.55 per Share. The Share price low and high for the Three Months Ended December 31, 2010 and related change from the Share price on September 30, 2010 was as follows: Shares traded from a low of $24.08 per Share (-0.12%) on October 4, 2010 to a high of $27.55 per Share (+14.27%) on December 31, 2010. No distributions were paid to Shareholders during the Year Ended December 31, 2010. Therefore, the total return for the Fund, on a market value basis, was 14.27%.

For the Three Months Ended December 31, 2009, the NYSE Arca market value of each Share increased 11.60% from $22.06 per Share to $24.62 per Share. The Share price low and high for the Three Months Ended December 31, 2009 and related change from the Share price on September 30, 2009 was as follows: Shares traded from a low of $21.70 per Share (-1.63%) on October 2, 2009 to a high of $24.84 per Share (+12.60%) on December 1, 2009. No distributions were paid to Shareholders during the Year Ended December 31, 2009. Therefore, the total return for the Fund, on a market value basis, was 11.60%.

Fund Share Net Asset Performance

For the Three Months Ended December 31, 2011, the net asset value of each Share increased 3.51% from $25.92 per Share to $26.83 per Share. Appreciation in futures contracts prices for Copper, Corn, RBOB Gasoline, Crude Oil, Brent Crude, Wheat, Soybeans, and Heating Oil during the Three Months Ended December 31, 2011 more than offset falling futures contract prices for Zinc, Aluminum, Gold, Natural Gas, Silver and Sugar contributing to an overall 3.75% increase in the level of the DBLCI–OY Diversified TR™. No distributions were paid to Shareholders during the Year Ended December 31, 2011. Therefore, the total return for the Fund, on a net asset value basis, was 3.51%.

Net income for the Three Months Ended December 31, 2011 was $179.3 million, resulting from $0.2 million of interest income, net realized gains of $92.2 million, net unrealized gains of $98.7 million and operating expenses of $11.8 million.

For the Three Months Ended December 31, 2010, the net asset value of each Share increased 14.41% from $24.10 per Share to $27.57 per Share. Appreciation in futures contracts prices for Zinc, Copper, Aluminum, Corn, RBOB Gasoline, Crude Oil, Brent Crude, Wheat, Soybeans, Heating Oil, Natural Gas, Sugar, Gold and Silver during the Three Months Ended December 31, 2010 contributed to an overall 14.25% increase in the level of the DBLCI–OY Diversified TR™.⁴ No distributions were paid to Shareholders during the Year Ended December 31, 2010. Therefore, the total return for the Fund, on a net asset value basis, was 14.41%.

Net income for the Three Months Ended December 31, 2010 was $631.1 million, resulting from $1.4 million of interest income, net realized gains of $360.4 million, net unrealized gains of $279.7 million and operating expenses of $10.4 million.

For the Three Months Ended December 31, 2009, the net asset value of each Share increased 11.09% from $22.19 per Share to $24.65 per Share. Appreciation in futures contracts prices for Zinc, Copper, Aluminum, Corn, RBOB Gasoline, Crude Oil, Brent Crude, Wheat, Soybeans, Heating Oil, Sugar, Gold and Silver during the Three Months Ended December 31, 2009 more than offset falling futures contract prices for Natural Gas contributing to an overall 10.08% increase in the level of the DBLCI–OY Diversified TR™.⁵ No distributions were paid to Shareholders during the Year Ended December 31, 2009. Therefore, the total return for the Fund, on a net asset value basis, was 11.09%.

Net income for the Three Months Ended December 31, 2009 was $392.0 million, resulting from $0.8 million of interest income, net realized gains of $34.3 million, net unrealized gains of $365.4 million and operating expenses of $8.5 million.

5 As more fully detailed above, from May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™. Commencing October 19, 2009, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Diversified Excess Return™.

32

Off-Balance Sheet Arrangements and Contractual Obligations

In the normal course of its business, the Fund is a party to financial instruments with off-balance sheet risk. The term “off-balance sheet risk” refers to an unrecorded potential liability that, even though it does not appear on the balance sheet, may result in a future obligation or loss. The financial instruments used by the Fund are commodity futures, whose values are based upon an underlying asset and generally represent future commitments which have a reasonable possibility to be settled in cash or through physical delivery. The financial instruments are traded on an exchange and are standardized contracts.

The Fund has not utilized, nor does it expect to utilize in the future, special purpose entities to facilitate off-balance sheet financing arrangements and has no loan guarantee arrangements or off-balance sheet arrangements of any kind, other than agreements entered into in the normal course of business noted above, which may include indemnification provisions related to certain risks service providers undertake in performing services which are in the best interests of the Fund. While the Fund’s exposure under such indemnification provisions cannot be estimated, these general business indemnifications are not expected to have a material impact on the Fund’s financial position.

The Fund’s contractual obligations are with the Managing Owner and the Commodity Broker. Management Fee payments made to the Managing Owner are calculated as a fixed percentage of the Fund’s net asset value. Commission payments to the Commodity Broker are on a contract-by-contract, or round-turn, basis. As such, the Managing Owner cannot anticipate the amount of payments that will be required under these arrangements for future periods as net asset values are not known until a future date. These agreements are effective for one year terms, renewable automatically for additional one year terms unless terminated. Additionally, these agreements may be terminated by either party for various reasons.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

INTRODUCTION

The Fund is designed to replicate positions in a commodity index. The market sensitive instruments held by it are subject to the risk of trading loss. Unlike an operating company, the risk of market sensitive instruments is integral, not incidental, to the Fund’s main line of business.

Market movements can produce frequent changes in the fair market value of the Fund’s open positions and, consequently, in its earnings and cash flow. The Fund’s market risk is primarily influenced by changes in the price of commodities.

Standard of Materiality

Materiality as used in this section, “Quantitative and Qualitative Disclosures About Market Risk,” is based on an assessment of reasonably possible market movements and the potential losses caused by such movements, taking into account the effects of margin, and any other multiplier features, as applicable, of the Fund’s market sensitive instruments.

QUANTIFYING THE FUND’S TRADING VALUE AT RISK

Quantitative Forward-Looking Statements

The following quantitative disclosures regarding the Fund’s market risk exposures contain “forward-looking statements” within the meaning of the safe harbor from civil liability provided for such statements by the Private Securities Litigation Reform Act of 1995 (set forth in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934). All quantitative disclosures in this section are deemed to be forward-looking statements for purposes of the safe harbor, except for statements of historical fact (such as the dollar amount of maintenance margin required for market risk sensitive instruments held at the end of the reporting period).

Value at risk, or VaR, is a statistical measure of the value of losses that would not be expected to be exceeded over a given time horizon and at a given probability level arising from movement of underlying risk factors. Loss is measured as a decline in the fair value of the portfolio as a result of changes in any of the material variables by which fair values are determined. VaR is measured over a specified holding period (1 day) and to a specified level of statistical confidence (99th percentile). However, the inherent uncertainty in the markets in which the Fund trades and the recurrence in the markets traded by the Fund of market movements far exceeding expectations could result in actual trading or non-trading losses far beyond the indicated VaR or the Fund’s experience to date (i.e., “risk of ruin”). In light of this, as well as the risks and uncertainties intrinsic to all future projections, the inclusion of the quantification included in this section should not be considered to constitute any assurance or representation that the Fund’s losses in any market sector will be limited to VaR or by the Fund’s attempts to manage its market risk.

THE FUND’S TRADING VALUE AT RISK

The Fund calculates VaR using the actual historical market movements of the Fund’s total assets.

33

The following table indicates the trading VaR associated with the Fund’s total assets as of December 31, 2011.

Description	Total Assets		Daily Volatility			VaR* (99 Percentile)		Number of times VaR Exceeded
PowerShares DB Commodity Index Tracking Fund	$	5,471,285,121		1.31	%	$	167,938,883	2

The following table indicates the trading VaR associated with the Fund’s total assets as of December 31, 2010.

Description	Total Assets		Daily Volatility			VaR* (99 Percentile)		Number of times VaR Exceeded
PowerShares DB Commodity Index Tracking Fund	$	5,110,292,129		1.18	%	$	140,128,100	2

* The VaR represents the one day downside risk, under normal market conditions, with a 99% confidence level. It is calculated using historical market moves of the Fund’s total assets and uses a one year look-back.

NON-TRADING RISK

The Fund has non-trading market risk as a result of investing in short-term United States Treasury Obligations. The market risk represented by these investments is expected to be immaterial.

QUALITATIVE DISCLOSURES REGARDING PRIMARY TRADING RISK EXPOSURES

The following qualitative disclosures regarding the Fund’s market risk exposures—except for those disclosures that are statements of historical fact—constitute forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act. The Fund’s primary market risk exposures are subject to numerous uncertainties, contingencies and risks. Government interventions, defaults and expropriations, illiquid markets, the emergence of dominant fundamental factors, political upheavals, changes in historical price relationships, an influx of new market participants, increased regulation and many other factors could result in material losses as well as in material changes to the risk exposures of the Fund. There can be no assurance that the Fund’s current market exposure will not change materially. Investors may lose all or substantially all of their investment in the Fund.

The following were the primary trading risk exposures of the Fund as of December 31, 2011 by market sector.

ENERGY

Light Sweet Crude Oil

The price of light sweet crude oil is volatile and is affected by numerous factors. The level of global industrial activity influences the demand for light sweet crude oil. In addition, various other factors can affect the demand for light sweet crude oil, such as weather, political events and labor activity. The supply of light sweet crude oil can be affected by many events, in particular, the meetings of the Organization of Petroleum Exporting Countries. Market expectations about events that will influence either demand or supply can cause prices for light sweet crude oil to fluctuate greatly. A significant amount of the world oil production capacity is controlled by a relatively small number of producers. Any large change in production by one of these producers could have a substantial effect on the price of light sweet crude oil.

Heating Oil

The price of heating oil is volatile and is affected by numerous factors. The level of global industrial activity influences the demand for heating oil. In addition, the seasonal temperatures in countries throughout the world can also heavily influence the demand for heating oil. Heating oil is derived from crude oil and as such, any factors that influence the supply of crude oil may also influence the supply of heating oil.

Brent Crude Oil

The price of Brent crude oil is volatile and is affected by numerous factors. The price of Brent crude oil is influenced by many factors, including, but not limited to, the amount of output by oil producing nations, worldwide supply/stockpiles, weather, various geopolitical factors that cause supply disruptions (e.g., war, terrorism), global demand (particularly from emerging nations), currency fluctuations, and activities of market participants such as hedgers and speculators.

RBOB Gasoline

34

The price of RBOB Gasoline is volatile and is affected by numerous factors. The level of global industrial activity influences the demand for RBOB Gasoline. In addition, the demand has seasonal variations, which occur during “driving seasons” usually considered the summer months in North America and Europe. RBOB Gasoline is derived from crude oil and as such, any factors that influence the supply of crude oil may also influence the supply of RBOB Gasoline.

Natural Gas

The price of natural gas is volatile and is affected by numerous factors. The level of global industrial activity influences the demand for natural gas. In addition to the seasonal temperatures in countries throughout the world, any fluctuations in temperature may also heavily influence the demand for natural gas.

METALS

Gold

The price of gold is volatile and is affected by numerous factors. Gold prices float freely in accordance with supply and demand. The price movement of gold may be influenced by a variety of factors, including announcements from central banks regarding reserve gold holdings, agreements among central banks, purchases and sales of gold by central banks, other governmental agencies that hold large supplies of gold, political uncertainties, economic concerns such as an increase or decrease in confidence in the global monetary system, the relative strength of the U.S. dollar, interest rates and numerous other factors. Gold prices may also be affected by industry factors such as industrial and jewelry demand.

Silver

The price of silver is volatile and is affected by numerous factors. The largest industrial users of silver (e.g., photographic, jewelry, and electronic industries) may influence its price. A change in economic conditions, such as a recession, can adversely affect industries which are dependent upon the use of silver. In turn, such a negative economic impact may decrease demand for silver, and, consequently, its price. Worldwide speculation and hedging activity by silver producers may also impact its price.

Aluminum

The price of aluminum is volatile. The price movement of aluminum may be influenced by a variety of factors, including the level of global industrial activity and demand, especially relating to the transportation, packaging and building sectors, each of which significantly influences the demand, and in turn, the price of aluminum. Prices for aluminum are influenced by a number of factors including the level of economic activity in large aluminum consuming markets, political uncertainties, economic concerns and the rate of supply of new metal from producers. The production of aluminum is a power intensive process that requires large amounts of inexpensive power. Disruptions in the amount of energy available to aluminum producers could affect the supply of aluminum.

Zinc

The price of zinc is volatile and is affected by numerous factors. The price of zinc is primarily affected by the global demand for and supply of zinc. Demand for zinc is significantly influenced by the level of global industrial economic activity. The galvanized steel industrial sector is particularly important given that the use of zinc in the manufacture of galvanized steel accounts for approximately 50% of world-wide zinc demand. The galvanized steel sector is in turn heavily dependent on the automobile and construction sectors. An additional, but highly volatile component of demand, is adjustments to inventory in response to changes in economic activity and/or pricing levels. The supply of zinc concentrate (the raw material) is dominated by China, Australia, North America and Latin America. The supply of zinc is also affected by current and previous price levels, which will influence investment decisions in new mines and smelters. It is not possible to predict the aggregate effect of all or any combination of these factors.

Copper

The price of copper is volatile. The price of copper is primarily affected by the global demand for and supply of copper. Demand for copper is significantly influenced by the level of global industrial economic activity. Industrial sectors which are particularly important include the electrical and construction sectors. In recent years demand has been supported by strong consumption from newly industrializing countries, which continue to be in a copper-intensive period of economic growth as they develop their infrastructure (such as China). An additional, but highly volatile, component of demand is adjustments to inventory in response to changes in economic activity and/or pricing levels. Apart from the United States, Canada and Australia, the majority of copper concentrate supply (the raw material) comes from outside the Organization for Economic Cooperation and Development countries. Chile is the largest producer of copper concentrate. In previous years, copper supply has been affected by strikes, financial problems and terrorist activity. Output has fallen particularly sharply in the “African Copperbelt” and in Bougainville, Papua New Guinea. Any political turmoil in these countries may cause copper supply to fall.

AGRICULTURAL

35

Corn

The price of corn is volatile. The price movement of corn may be influenced by three primary supply factors: farmer planting decisions, climate, and government agricultural policies and three major market demand factors: livestock feeding, shortages or surpluses of world grain supplies, and domestic and foreign government policies and trade agreements. Additionally, the price movement of corn may be influenced by a variety of other factors, including weather conditions, disease, transportation costs, political uncertainties and economic concerns.

Wheat

The price of wheat is volatile. The price movement of wheat may be influenced by three primary supply factors: farmer planting decisions, climate, and government agricultural policies and three major market demand factors: food, shortages or surpluses of world grain supplies, and domestic and foreign government policies and trade agreements. Additionally, the price movement of wheat may be influenced by a variety of other factors, including weather conditions, disease, transportation costs, political uncertainties and economic concerns.

Soybeans

The price of soybeans is volatile. The price movement of soybeans may be influenced by a variety of factors, including demand, weather conditions, disease, crop production, transportation costs, political uncertainties and economic concerns.

Sugar

The price of sugar is volatile. The price movement of sugar may be influenced by a variety of factors, including demand, weather conditions, disease, crop production, transportation costs, political uncertainties and economic concerns.

QUALITATIVE DISCLOSURES REGARDING NON-TRADING RISK EXPOSURE

General

The Fund is unaware of any (i) anticipated known demands, commitments or capital expenditures; (ii) material trends, favorable or unfavorable, in its capital resources; or (iii) trends or uncertainties that will have a material effect on operations.

QUALITATIVE DISCLOSURES REGARDING MEANS OF MANAGING RISK EXPOSURE

Under ordinary circumstances, the Managing Owner’s discretionary power is limited to determining whether the Fund will make a distribution. Under emergency or extraordinary circumstances, the Managing Owner’s discretionary powers increase, but remain circumscribed. These special circumstances, for example, include the unavailability of the Index or certain natural or man-made disasters. The Managing Owner does not apply risk management techniques. The Fund initiates positions only on the “long” side of the market and does not employ “stop-loss” techniques.

36

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Index

Documents	Page
Report of Management on Internal Control Over Financial Reporting		38
Report of Independent Registered Public Accounting Firm—Internal Control Over Financial Reporting		39
Report of Independent Registered Public Accounting Firm—Financial Statements		40
Statements of Financial Condition as of December 31, 2011 and 2010		41
Schedule of Investments as of December 31, 2011		42
Schedule of Investments as of December 31, 2010		43
Statements of Income and Expenses For the Years Ended December 31, 2011, 2010 and 2009		44
Statement of Changes in Shareholders’ Equity For the Year Ended December 31, 2011		45
Statement of Changes in Shareholders’ Equity For the Year Ended December 31, 2010		46
Statement of Changes in Shareholders’ Equity For the Year Ended December 31, 2009		47
Statements of Cash Flows For the Years Ended December 31, 2011, 2010 and 2009		48
Notes to Financial Statements		49

37

Report of Management on Internal Control

Over Financial Reporting

Management of DB Commodity Services LLC, as managing owner (the “Managing Owner”) of PowerShares DB Commodity Index Tracking Fund (the “Fund”), is responsible for establishing and maintaining adequate internal control over financial reporting, as defined under Rules 13a-15(f) and 15d-15(f) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. Internal control over financial reporting includes those policies and procedures that: (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Fund; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that the Fund’s receipts and expenditures are being made only in accordance with appropriate authorizations of management; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Fund’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements, errors or fraud. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

We, Hans Ephraimson, Chief Executive Officer, and Michael Gilligan, Principal Financial Officer of the Managing Owner, assessed the effectiveness of the Fund’s internal control over financial reporting as of December 31, 2011. In making this assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) in Internal Control—Integrated Framework. The assessment included an evaluation of the design of the Fund’s internal control over financial reporting and testing of the operational effectiveness of its internal control over financial reporting. Based on our assessment and those criteria, we have concluded that the Fund maintained effective internal control over financial reporting as of December 31, 2011.

The Fund’s independent registered public accounting firm, KPMG LLP, has audited the Fund’s internal control over financial reporting as of December 31, 2011, as stated in their report on page 39 of the Fund’s Annual Report on Form 10-K.

By:	/S/    HANS EPHRAIMSON
Name:	Hans Ephraimson
Title:	Chief Executive Officer of
	the Managing Owner
By:	/S/    MICHAEL GILLIGAN
Name:	Michael Gilligan
Title:	Principal Financial Officer
	of the Managing Owner

February 28, 2012

38

Report of Independent Registered Public Accounting Firm

The Board of Managers of DB Commodity Services LLC, and

The Shareholders of PowerShares DB Commodity Index Tracking Fund:

We have audited PowerShares DB Commodity Index Tracking Fund’s (the Fund) internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Fund’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Report of Management on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Fund’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, PowerShares DB Commodity Index Tracking Fund maintained, in all material respects, effective internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the statements of financial condition, including the schedules of investments, of PowerShares DB Commodity Index Tracking Fund as of December 31, 2011 and 2010, and the related statements of income and expenses, changes in shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2011, and our report dated February 28, 2012 expressed an unqualified opinion on those financial statements.

/s/ KPMG LLP

New York, New York

February 28, 2012

39

Report of Independent Registered Public Accounting Firm

The Board of Managers of DB Commodity Services LLC, and

The Shareholders of PowerShares DB Commodity Index Tracking Fund:

We have audited the accompanying statements of financial condition, including the schedules of investments, of PowerShares DB Commodity Index Tracking Fund (the Fund) as of December 31, 2011 and 2010, and the related statements of income and expenses, changes in shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2011. These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of PowerShares DB Commodity Index Tracking Fund as of December 31, 2011 and 2010, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2011, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), PowerShares DB Commodity Index Tracking Fund’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated February 28, 2012 expressed an unqualified opinion on the effectiveness of the Fund’s internal control over financial reporting.

/s/ KPMG LLP

New York, New York

February 28, 2012

40

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS.

PowerShares DB Commodity Index Tracking Fund

Statements of Financial Condition

December 31, 2011 and 2010

	2011			2010
Assets
Equity in broker trading accounts:
United States Treasury Obligations, at fair value (cost $5,311,724,492 and $4,489,205,023 respectively)	$	5,311,719,979		$	4,489,390,393
Cash held by broker (restricted $0 and $5,640,739, respectively)		525,057,810			57,572,732
Net unrealized appreciation (depreciation) on futures contracts		(376,223,544	)		563,328,004
Deposits with broker		5,460,554,245			5,110,291,129
Receivable for shares issued		10,730,876			—
Other assets		—			1,000
Total assets	$	5,471,285,121		$	5,110,292,129
Liabilities
Management fee payable	$	3,900,692		$	3,507,183
Brokerage fee payable		1,860			9,019
Total liabilities		3,902,552			3,516,202
Commitments and Contingencies (Note 9)
Equity
Shareholders’ equity
General shares:
Paid in capital - 40 shares issued and outstanding as of
December 31, 2011 and 2010, respectively		1,000			1,000
Accumulated earnings (deficit)		73			103
Total General shares		1,073			1,103
Shares:
Paid in capital - 203,800,000 and 185,200,000 redeemable Shares issued
and outstanding as of December 31, 2011 and 2010, respectively		4,872,481,564			4,278,778,296
Accumulated earnings (deficit)		594,899,932			827,996,528
Total Shares		5,467,381,496			5,106,774,824
Total shareholders’ equity		5,467,382,569			5,106,775,927
Total liabilities and equity	$	5,471,285,121		$	5,110,292,129
Net asset value per share
General shares	$	26.83		$	27.58
Shares	$	26.83		$	27.57

See accompanying notes to financial statements.

41

PowerShares DB Commodity Index Tracking Fund

Schedule of Investments

December 31, 2011

Description	Percentage of Net  Assets			Fair Value		Face Value
United States Treasury Obligations
U.S. Treasury Bills, 0.015% due January 5, 2012		24.91	%	$	1,361,998,638	$	1,362,000,000
U.S. Treasury Bills, 0.01% due January 12, 2012		2.68			146,499,560		146,500,000
U.S. Treasury Bills, 0.025% due January 19, 2012		4.75			259,998,700		260,000,000
U.S. Treasury Bills, 0.015% due January 26, 2012		15.81			864,293,950		864,300,000
U.S. Treasury Bills, 0.01% due February 2, 2012		9.79			534,995,185		535,000,000
U.S. Treasury Bills, 0.01% due February 16, 2012		3.95			215,997,408		216,000,000
U.S. Treasury Bills, 0.015% due February 23, 2012		4.94			269,995,140		270,000,000
U.S. Treasury Bills, 0.03% due March 1, 2012		5.21			284,992,875		285,000,000
U.S. Treasury Bills, 0.005% due March 8, 2012		3.18			173,994,432		174,000,000
U.S. Treasury Bills, 0.01% due March 15, 2012		6.80			371,986,980		372,000,000
U.S. Treasury Bills, 0.005% due March 22, 2012		3.75			204,993,235		205,000,000
U.S. Treasury Bills, 0.025% due March 29, 2012		11.38			621,973,876		622,000,000
Total United States Treasury Obligations (cost $5,311,724,492)		97.15	%	$	5,311,719,979

A portion of the above United States Treasury Obligations are held as initial margin against open futures contracts, as described in Note 4(e).

Description	Percentage of Net  Assets			Fair Value
Unrealized Appreciation/(Depreciation) on Futures Contracts
Aluminum (4,467 contracts, settlement date September 17, 2012)		(0.76	)%	$	(41,458,506	)
Brent Crude (6,473 contracts, settlement date February 14, 2012)		0.24			12,808,900
Copper (1,256 contracts, settlement date March 19, 2012)		(1.02	)		(55,719,025	)
Corn (3,323 contracts, settlement date March 14, 2012)		0.06			3,252,000
Corn (7,105 contracts, settlement date December 14, 2012)		(0.14	)		(7,618,388	)
Gold (2,611 contracts, settlement date February 27, 2012)		(0.54	)		(29,505,740	)
Heating Oil (5,738 contracts, settlement date May 31, 2012)		(0.67	)		(36,513,943	)
Natural Gas (8,045 contracts, settlement date September 26, 2012)		(1.48	)		(80,821,700	)
RBOB Gasoline (6,652 contracts, settlement date November 30, 2012)		(0.17	)		(9,328,532	)
Red Wheat (3,574 contracts, settlement date July 13, 2012)		(0.12	)		(6,821,963	)
Red Wheat (399 contracts, settlement date December 14, 2012)		0.00			78,725
Silver (666 contracts, settlement date December 27, 2012)		(0.38	)		(21,023,215	)
Soybeans (3,420 contracts, settlement date November 14, 2012)		0.07			3,854,150
Soybeans (1,967 contracts, settlement date January 14, 2013)		0.08			4,554,088
Sugar (11,967 contracts, settlement date June 29, 2012)		(0.23	)		(12,498,528	)
Wheat (3,448 contracts, settlement date July 13, 2012)		(0.63	)		(34,172,237	)
Wheat (1,034 contracts, settlement date December 14, 2012)		(0.02	)		(1,342,712	)
WTI Crude (7,568 contracts, settlement date June 20, 2012)		(0.38	)		(20,883,030	)
Zinc (4,819 contracts, settlement date July 16, 2012)		(0.79	)		(43,063,888	)
Net Unrealized Depreciation on Futures Contracts		(6.88	)%	$	(376,223,544	)

Net unrealized depreciation is comprised of unrealized losses of $417,574,520 and unrealized gains of $41,350,976.

See accompanying notes to financial statements.

42

PowerShares DB Commodity Index Tracking Fund

Schedule of Investments

December 31, 2010

Description	Percentage of Net  Assets			Fair Value		Face Value
United States Treasury Obligations
U.S. Treasury Bills, 0.08% due January 6, 2011		17.10	%	$	872,998,254	$	873,000,000
U.S. Treasury Bills, 0.085% due January 13, 2011		4.03			205,498,150		205,500,000
U.S. Treasury Bills, 0.07% due January 20, 2011		3.56			181,996,360		182,000,000
U.S. Treasury Bills, 0.065% due January 27, 2011		15.55			794,270,611		794,300,000
U.S. Treasury Bills, 0.125% due February 3, 2011		13.45			686,948,475		687,000,000
U.S. Treasury Bills, 0.125% due February 10, 2011		9.77			498,951,597		499,000,000
U.S. Treasury Bills, 0.13% due February 17, 2011		2.10			106,985,234		107,000,000
U.S. Treasury Bills, 0.12% due February 24, 2011		3.70			188,969,382		189,000,000
U.S. Treasury Bills, 0.175% due March 3, 2011		3.78			192,961,400		193,000,000
U.S. Treasury Bills, 0.145% due March 10, 2011		2.35			119,973,600		120,000,000
U.S. Treasury Bills, 0.14% due March 17, 2011		6.34			323,927,748		324,000,000
U.S. Treasury Bills, 0.13% due March 24, 2011		2.13			108,972,096		109,000,000
U.S. Treasury Bills, 0.18% due March 31, 2011		4.05			206,937,486		207,000,000
Total United States Treasury Obligations (cost $4,489,205,023)		87.91	%	$	4,489,390,393

A portion of the above United States Treasury Obligations are held as initial margin against open futures contracts, as described in Note 4(e).

Description	Percentage of Net Assets			Fair Value
Unrealized Appreciation on Futures Contracts
Aluminum (3,355 contracts, settlement date September 19, 2011)		0.14	%	$	7,231,369
Brent Crude (6,913 contracts, settlement date January 14, 2011)		0.47			24,156,450
Copper (955 contracts, settlement date March 14, 2011)		1.37			70,201,738
Corn (3,270 contracts, settlement date March 14, 2011)		0.61			31,143,450
Corn (6,407 contracts, settlement date December 14, 2011)		0.16			8,081,812
Gasoline (6,485 contracts, settlement date November 30, 2011)		0.67			33,961,708
Light Sweet Crude Oil (6,824 contracts, settlement date June 21, 2011)		1.62			83,185,660
Gold (2,810 contracts, settlement date August 29, 2011)		0.26			13,290,940
Heating Oil (6,032 contracts, settlement date May 31, 2011)		0.93			47,513,239
Natural Gas (6,081 contracts, settlement date September 28, 2011)		0.04			1,990,610
Red Wheat (2,481 contracts, settlement date July 14, 2011)		0.56			28,609,038
Silver (717 contracts, settlement date December 28, 2011)		0.37			18,780,495
Soybeans (3,084 contracts, settlement date November 14, 2011)		0.76			38,910,775
Soybeans (1,501 contracts, settlement date January 13, 2012)		0.15			7,466,350
Sugar (9,488 contracts, settlement date June 30, 2011)		2.01			102,491,726
Wheat (3,218 contracts, settlement date July 14, 2011)		0.87			44,316,550
Wheat (965 contracts, settlement date December 14, 2011)		0.03			1,616,513
Zinc (3,299 contracts, settlement date May 16, 2011)		0.01			379,581
Net Unrealized Appreciation on Futures Contracts		11.03	%	$	563,328,004

Net unrealized appreciation is comprised of unrealized gains of $568,006,558 and unrealized losses of $4,678,554.

See accompanying notes to financial statements.

43

PowerShares DB Commodity Index Tracking Fund

Statements of Income and Expenses

For the Years Ended December 31, 2011, 2010 and 2009

	2011			2010			2009
Income
Interest Income	$	3,659,156		$	5,081,450		$	3,427,808
Expenses
Management Fee		49,989,842			38,197,079			20,523,877
Brokerage Commissions and Fees		1,129,062			1,268,413			1,664,714
Total Expenses		51,118,904			39,465,492			22,188,591
Net investment income (loss)		(47,459,748	)		(34,384,042	)		(18,760,783	)
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Futures and Foreign Currency Translation
Net Realized Gain (Loss) on
United States Treasury Obligations		69,300			(982	)		(13,235	)
Futures		754,035,253			199,582,317			(410,314,560	)
Foreign Currency Translation		—			(19,555	)		—
Net realized gain (loss)		754,104,553			199,561,780			(410,327,795	)
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations		(189,883	)		109,485			66,127
Futures		(939,551,548	)		342,001,260			910,112,503
Net change in unrealized gain (loss)		(939,741,431	)		342,110,745			910,178,630
Net realized and net change in unrealized gain (loss) on United States Treasury Obligations, Futures and Foreign Currency Translation		(185,636,878	)		541,672,525			499,850,835
Net Income (Loss)	$	(233,096,626	)	$	507,288,483		$	481,090,052
Less: net income attributed to the non-controlling interest in subsidiary - related party		—			(117	)		(129	)
Net Income (Loss) Attributable to PowerShares DB Commodity Index Tracking Fund	$	(233,096,626	)	$	507,288,366		$	481,089,923

See accompanying notes to financial statements.

44

PowerShares DB Commodity Index Tracking Fund

Statement of Changes in Shareholders’ Equity

For the Year Ended December 31, 2011

	General Shares										Shares
	Shares		Paid in Capital		Accumulated Earnings (Deficit)			Total Equity			Shares			Paid in Capital			Accumulated Earnings (Deficit)			Total Equity			Total Shareholders’ Equity
Balance at January 1, 2011		40	$	1,000	$	103		$	1,103			185,200,000		$	4,278,778,296		$	827,996,528		$	5,106,774,824		$	5,106,775,927
Sale of Shares												58,800,000			1,714,838,522						1,714,838,522			1,714,838,522
Redemption of Shares												(40,200,000	)		(1,121,135,254	)					(1,121,135,254	)		(1,121,135,254	)
Net Income (Loss)
Net investment income (loss)						(6	)		(6	)								(47,459,742	)		(47,459,742	)		(47,459,748	)
Net realized gain (loss) on United States Treasury Obligations and Futures						97			97									754,104,456			754,104,456			754,104,553
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures						(121	)		(121	)								(939,741,310	)		(939,741,310	)		(939,741,431	)
Net Income (Loss)						(30	)		(30	)								(233,096,596	)		(233,096,596	)		(233,096,626	)
Balance at December 31, 2011		40	$	1,000	$	73		$	1,073			203,800,000		$	4,872,481,564		$	594,899,932		$	5,467,381,496		$	5,467,382,569

See accompanying notes to financial statements.

45

PowerShares DB Commodity Index Tracking Fund

Statement of Changes in Shareholders’ Equity

For the Year Ended December 31, 2010

	General Shares										Shares
	Shares		Paid in Capital		Accumulated Earnings (Deficit)			Total Equity			Shares			Paid in Capital			Accumulated Earnings (Deficit)			Total Equity			Total Shareholders’ Equity			Non-controlling Interest			Total Equity
Balance at January 1, 2010		40	$	1,000	$	(14	)	$	986			178,000,000		$	4,067,244,194		$	320,708,279		$	4,387,952,473		$	4,387,953,459		$	986		$	4,387,954,445
Sale of Shares												45,600,000			1,086,574,324						1,086,574,324			1,086,574,324						1,086,574,324
Redemption of Shares												(38,400,000	)		(875,040,222	)					(875,040,222	)		(875,040,222	)					(875,040,222	)
Net Income (Loss)
Net investment income (loss)						(8	)		(8	)								(34,384,026	)		(34,384,026	)		(34,384,034	)		(8	)		(34,384,042	)
Net realized gain (loss) on United States Treasury Obligations Futures and Foreign Currency Translation						46			46									199,561,688			199,561,688			199,561,734			46			199,561,780
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures						79			79									342,110,587			342,110,587			342,110,666			79			342,110,745
Net Income (Loss)						117			117									507,288,249			507,288,249			507,288,366			117			507,288,483
Redemption of non-controlling interest						—			—									—			—			—			(1,103	)		(1,103	)
Balance at December 31, 2010		40	$	1,000	$	103		$	1,103			185,200,000		$	4,278,778,296		$	827,996,528		$	5,106,774,824		$	5,106,775,927		$	—		$	5,106,775,927

See accompanying notes to financial statements.

46

PowerShares DB Commodity Index Tracking Fund

Statement of Changes in Shareholders’ Equity

For the Year Ended December 31, 2009

	General Shares										Shares
	Shares		Paid in Capital		Accumulated Earnings			Total Equity			Shares			Paid in Capital			Accumulated Earnings (Deficit)			Total Equity			Total Shareholders’ Equity			Non-controlling Interest			Total Equity
Balance at January 1, 2009		40	$	1,000	$	(143	)	$	857			56,000,000		$	1,359,626,738		$	(160,381,515	)	$	1,199,245,223		$	1,199,246,080		$	857		$	1,199,246,937
Sale of Shares												130,000,000			2,882,078,200						2,882,078,200			2,882,078,200						2,882,078,200
Redemption of Shares												(8,000,000	)		(174,460,744	)					(174,460,744	)		(174,460,744	)					(174,460,744	)
Net Income (Loss)
Net investment income						(7	)		(7	)								(18,760,769	)		(18,760,769	)		(18,760,776	)		(7	)		(18,760,783	)
Net realized loss on United States Treasury Obligations and Futures						(155	)		(155	)								(410,327,485	)		(410,327,485	)		(410,327,640	)		(155	)		(410,327,795	)
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures						291			291									910,178,048			910,178,048			910,178,339			291			910,178,630
Net Income (Loss)						129			129									481,089,794			481,089,794			481,089,923			129			481,090,052
Balance at December 31, 2009		40	$	1,000	$	(14	)	$	986			178,000,000		$	4,067,244,194		$	320,708,279		$	4,387,952,473		$	4,387,953,459		$	986		$	4,387,954,445

See accompanying notes to financial statements.

47

PowerShares DB Commodity Index Tracking Fund

Statements of Cash Flows

For the Years Ended December 31, 2011, 2010 and 2009

	2011			2010			2009
Cash flows from operating activities:
Net Income (Loss)	$	(233,096,626	)	$	507,288,483		$	481,090,052
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Cost of securities purchased		(23,183,942,035	)		(16,965,659,067	)		(11,955,501,698	)
Proceeds from securities sold and matured		22,365,188,660			16,390,107,464			8,225,164,456
Net accretion of discount on United States Treasury Obligations		(3,696,794	)		(5,110,637	)		(3,435,572	)
Net realized (gain) loss on United States Treasury Obligations		(69,300	)		982			13,235
Net change in unrealized (gain) loss on United States Treasury Obligations and futures		939,741,431			(342,110,745	)		(910,178,630	)
(Increase) decrease in restricted cash		5,640,739			12,784,100			(18,424,838	)
Change in operating receivables and liabilities:
Other assets		1,000			—			—
Payable to broker		—			(298,202	)		298,202
Management fee payable		393,509			821,590			1,995,612
Brokerage fee payable		(7,159	)		(6,981	)		90
Net cash provided by (used for) operating activities		(109,846,575	)		(402,183,013	)		(4,178,979,091	)
Cash flows from financing activities:
Proceeds from sale of Shares		1,714,838,522			1,086,574,324			2,882,078,200
Receivable for Shares issued		(10,730,876	)		—			—
Redemption of Shares		(1,121,135,254	)		(875,040,222	)		(174,460,744	)
Redemption of non-controlling interest		—			(1,103	)		—
Net cash provided by (used for) financing activities		582,972,392			211,532,999			2,707,617,456
Net change in cash held by broker		473,125,817			(190,650,014	)		(1,471,361,635	)
Unrestricted Cash held by broker at beginning of period		51,931,993			242,582,007			1,713,943,642
Unrestricted Cash held by broker at end of period	$	525,057,810		$	51,931,993		$	242,582,007

See accompanying notes to financial statements.

48

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements

December 31, 2011

(1) Organization

PowerShares DB Commodity Index Tracking Fund (the “Fund) was formed as a Delaware statutory trust on May 23, 2005. DB Commodity Services LLC, a Delaware Limited Liability Company (“DBCS” or the “Managing Owner”), seeded the Fund with a capital contribution of $1,000 in exchange for 40 General Shares of the Fund. The Fund was originally named “DB Commodity Index Tracking Fund”. The Fund changed its name to “PowerShares DB Commodity Index Tracking Fund” effective August 10, 2006. The fiscal year end of the Fund is December 31^st. The term of the Fund is perpetual (unless terminated earlier in certain circumstances) as provided in the Second Amended and Restated Declaration of Trust and Trust Agreement of the Fund (the “Trust Agreement”).

The Fund was originally formed as a master-feeder structure. Prior to the close of business on December 31, 2010, the master-feeder structure was collapsed. As a result of the collapse of the master-feeder structure, on December 31, 2010, the Managing Owner’s and the Fund’s interests in the DB Commodity Master Fund (the “Master Fund”) were redeemed for all assets and liabilities held by the Master Fund. Hereafter, all references to the Fund either represent the structure in place as of December 31, 2010 or the structure in place prior to such date whereby the financial statements reflect the consolidation of the Fund and the Master Fund. The collapse of the master-feeder structure had no impact on a Shareholder’s net asset value or the results of operations for the Fund.

The Fund offers common units of beneficial interest (the “Shares”) only to certain eligible financial institutions (the “Authorized Participants”) in one or more blocks of 200,000 Shares, called a Basket. The Fund commenced investment operations on January 31, 2006. The Fund commenced trading on the American Stock Exchange (now known as the NYSE Alternext US LLC (the “NYSE Alternext”)) on February 3, 2006 and, as of November 25, 2008, is listed on the NYSE Arca, Inc. (the “NYSE Arca”).

This Report covers the years ended December 31, 2011, 2010 and 2009 (herein referred to, as the “Year Ended December 31, 2011”, the “Year Ended December 31, 2010” and the “Year Ended December 31, 2009”, respectively).

(2) Fund Investment Overview

The Fund invests with a view to tracking the changes, whether positive or negative, in the level of the DBIQ Diversified Commodity Index Excess Return^TM (the “Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund.

The Index is intended to reflect the change in market value of the commodity sector. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the “Index Commodities”). From May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The commodities comprising the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn and Wheat. From October 19, 2009 to December 31, 2010, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Excess Return™ (the “Interim Index”) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. After December 31, 2010, the Fund commenced tracking DBIQ Optimum Yield Diversified Commodity Index Excess Return™ (the “Index”). The Fund’s Interim Index is identical to the Index except with respect to the following non-substantive changes: (i) name of Index, and (ii) inception date of Index for Commodity Futures Trading Commission (the “CFTC”) purposes. Except as provided in the immediately preceding sentence, all prior underlying formulae, data (e.g., closing levels, measure of volatility, all other numerical statistics and measures) and all other characteristics (e.g., Base Date, Index Sponsor, rolling, etc.) with respect to the Interim Index is identical to the Index. Please see http://dbfunds.db.com/dbc/weights.aspx with respect to the most recently available weighted composition of the Fund and http://dbfunds.db.com/dbc/index.aspx with respect to the composition of the Index on the Base Date.

The Index is intended to reflect the change in market value of certain commodities. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the “Index Commodities”). The Fund also holds United States Treasury Obligations and other high credit quality short-term fixed income securities for deposit with the Fund’s commodity broker as margin.

The CFTC and/or commodity exchanges, as applicable, impose position limits on market participants trading in certain commodities included in the Index. The Index is comprised of futures contracts on the Index Commodities that expire in a specific month and trade on a specific exchange (the “Index Contracts”). As disclosed in the Fund’s Prospectus, if the Managing Owner

49

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements—(Continued)

December 31, 2011

determines in its commercially reasonable judgment that it has become impracticable or inefficient for any reason for the Fund to gain full or partial exposure to any Index Commodity by investing in a specific Index Contract, the Fund may invest in a futures contract referencing the particular Index Commodity other than the Index Contract or, in the alternative, invest in other futures contracts not based on the particular Index Commodity if, in the commercially reasonable judgment of the Managing Owner, such futures contracts tend to exhibit trading prices that correlate with such Index Commodity. Because the Fund is approaching or has reached position limits with respect to certain futures contracts comprising the Index, the Fund has commenced investing in other futures contracts based on commodities that comprise the Fund’s Index and in futures contracts based on commodities other than commodities that comprise the Fund’s Index.

The Fund does not employ leverage. As of December 31, 2011 and 2010, the Fund had $5,460,554,245 (or 99.80%) and $5,110,291,129 (or 100%), respectively, of its holdings of cash, United States Treasury Obligations and unrealized appreciation/depreciation of futures contracts on deposit with its Commodity Broker. Of this, $425,657,099 (or 7.80%) and $330,490,820 (or 6.47%) of the Fund’s holdings of cash and United States Treasury Obligations are required to be deposited as margin in support of the Fund’s long futures positions as of December 31, 2011 and 2010, respectively. For additional information, please see the audited Schedule of Investments as of December 31, 2011 and 2010 for details of the Fund’s portfolio holdings.

DBIQ™, DBLCI™ and Deutsche Bank Liquid Commodity Index™ are trademarks of Deutsche Bank AG London (the “Index Sponsor”). Trademark applications in the United States are pending with respect to the Fund and aspects of the Index. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademarks. Deutsche Bank AG London is an affiliate of the Fund and the Managing Owner.

(3) Service Providers and Related Party Agreements

The Trustee

Under the Trust Agreement, Wilmington Trust Company, the trustee of the Fund (the “Trustee”), has delegated to the Managing Owner the exclusive management and control of all aspects of the business of the Fund. The Trustee will have no duty or liability to supervise or monitor the performance of the Managing Owner, nor will the Trustee have any liability for the acts or omissions of the Managing Owner.

The Managing Owner

The Managing Owner serves the Fund as commodity pool operator, commodity trading advisor, and managing owner, and is an indirect wholly-owned subsidiary of Deutsche Bank AG. During the Year Ended December 31, 2011, the Fund incurred Management Fees of $49,989,842, of which $3,900,692 was payable at December 31, 2011. During the Year Ended December 31, 2010, the Fund incurred Management Fees of $38,197,079, of which $3,507,183 was payable at December 31, 2010. During the Year Ended December 31, 2009, the Fund incurred Management Fees of $20,523,877.

The Commodity Broker

Deutsche Bank Securities Inc., a Delaware corporation, serves as the Fund’s clearing broker (the “Commodity Broker”). The Commodity Broker is an indirect wholly-owned subsidiary of Deutsche Bank AG and is an affiliate of the Managing Owner. In its capacity as clearing broker, the Commodity Broker executes and clears each of the Fund’s futures transactions and performs certain administrative and custodial services for the Fund. As custodian of the Fund’s assets, the Commodity Broker is responsible, among other things, for providing periodic accountings of all dealings and actions taken by the Fund during the reporting period, together with an accounting of all securities, cash or other indebtedness or obligations held by it or its nominees for or on behalf of the Fund. During the Year Ended December 31, 2011, the Fund incurred brokerage fees of $1,129,062, of which $1,860 was payable at December 31, 2011. During the Year Ended December 31, 2010, the Fund incurred brokerage fees of $1,268,413, of which $9,019 was payable at December 31, 2010. During the Year Ended December 31, 2009, the Fund incurred brokerage fees of $1,664,714.

The Administrator

The Bank of New York Mellon (the “Administrator”) has been appointed by the Managing Owner as the administrator, custodian and transfer agent of the Fund, and has entered into separate administrative, custodian, transfer agency and service agreements (collectively referred to as the “Administration Agreement”).

Pursuant to the Administration Agreement, the Administrator performs or supervises the performance of services necessary for the operation and administration of the Fund (other than making investment decisions), including receiving and processing orders from Authorized Participants to create and redeem Baskets, net asset value calculations, accounting and other fund administrative services. The Administrator retains certain financial books and records, including: Basket creation and redemption books and records, fund accounting records, ledgers with respect to assets, liabilities, capital, income and expenses, the registrar, transfer journals and related details, and trading and related documents received from futures commission merchants.

The Distributor

50

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements—(Continued)

December 31, 2011

ALPS Distributors, Inc. (the “Distributor”) provides certain distribution services to the Fund. Pursuant to the Distribution Services Agreement among the Managing Owner in its capacity as managing owner of the Fund and the Distributor, the Distributor assists the Managing Owner and the Administrator with certain functions and duties relating to distribution and marketing services to the Fund including reviewing and approving marketing materials.

Invesco PowerShares Capital Management LLC

Under the License Agreement among Invesco PowerShares Capital Management LLC (the “Licensor”), and the Managing Owner in its own capacity and in its capacity as managing owner of the Fund (the Fund and the Managing Owner, collectively, the “Licensees”), the Licensor granted to each Licensee a non-exclusive license to use the “PowerShares” trademark (the “Trademark”) anywhere in the world, solely in connection with the marketing and promotion of the Fund and to use or refer to the Trademark in connection with the issuance and trading of the Fund as necessary.

Invesco Aim Distributors, Inc.

Through a marketing agreement between the Managing Owner and Invesco Aim Distributors, Inc. (“Invesco Aim Distributors”), an affiliate of Invesco PowerShares Capital Management LLC (“Invesco PowerShares”), the Managing Owner, on behalf of the Fund, has appointed Invesco Aim Distributors as a marketing agent. Invesco Aim Distributors assists the Managing Owner and the Administrator with certain functions and duties such as providing various educational and marketing activities regarding the Fund, primarily in the secondary trading market, which activities include, but are not limited to, communicating the Fund’s name, characteristics, uses, benefits, and risks, consistent with the prospectus. Invesco Aim Distributors will not open or maintain customer accounts or handle orders for the Fund. Invesco Aim Distributors engages in public seminars, road shows, conferences, media interviews, and distributes sales literature and other communications (including electronic media) regarding the Fund.

(4) Summary of Significant Accounting Policies

(a) Basis of Presentation

The financial statements of the Fund have been prepared using U.S. generally accepted accounting principles and include the financial statements of the Fund and the Master Fund when applicable. As described in note 1, the Fund was originally formed as a master-feeder structure and such structure was collapsed on December 31, 2010. The financial statements reflect consolidation of the Fund and the Master Fund for 2009. Upon the initial offering of the Shares on January 31, 2006, the capital raised by the Fund was used to purchase 100% of the common units of beneficial interest of the Master Fund (the “Master Fund Limited Units”) (excluding common units of beneficial interest of the Master Fund held by the Managing Owner (the “Master Fund General Units”)). The Master Fund Limited Units owned by the Fund provided the Fund and its investors certain controlling rights and abilities over the Master Fund. Consequently, the financial statement balances of the Master Fund were consolidated with the Fund’s financial statement balances for the period previously described and all significant inter-company balances and transactions were eliminated.

(b) Use of Estimates

The preparation of the financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses and related disclosure of contingent assets and liabilities during the reporting period of the financial statements and accompanying notes. Actual results could differ from those estimates.

(c) Financial Instruments and Fair Value

United States Treasury Obligations and commodity futures contracts are recorded in the statements of financial condition on a trade date basis at fair value with changes in fair value recognized in earnings in each period. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price).

Financial Accounting Standards Board (FASB) fair value measurement and disclosure guidance requires a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:

Basis of Fair Value Measurement

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2: Quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either

51

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements—(Continued)

December 31, 2011

directly or indirectly;

Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

In determining fair value of United States Treasury Obligations and commodity futures contracts, the Fund uses unadjusted quoted market prices in active markets. United States Treasury Obligations and commodity futures contracts are classified within Level 1 of the fair value hierarchy. The Fund does not adjust the quoted prices for United States Treasury Obligations and commodity futures contracts.

(d) Deposits with Broker

The Fund deposits cash and United States Treasury Obligations with its Commodity Broker subject to CFTC regulations and various exchange and broker requirements. The combination of the Fund’s deposits with its Commodity Broker of cash and United States Treasury Obligations and the unrealized profit or loss on open futures contracts (variation margin) represents the Fund’s overall equity in its broker trading account. To meet the Fund’s initial margin requirements, the Fund holds United States Treasury Obligations. The Fund uses its cash held by the Commodity Broker to satisfy variation margin requirements. The Fund earns interest on its cash deposited with the Commodity Broker.

(e) United States Treasury Obligations

The Fund records purchases and sales of United States Treasury Obligations on a trade date basis. These holdings are marked to market based on quoted market closing prices. The Fund holds United States Treasury Obligations for deposit with the Fund’s Commodity Broker to meet margin requirements and for trading purposes. Interest income is recognized on an accrual basis when earned. Premiums and discounts are amortized or accreted over the life of the United States Treasury Obligations. Included in the United States Treasury Obligations as of December 31, 2011 and 2010 were holdings of $425,657,099 and $330,490,820, respectively, which were restricted and held against initial margin of the open futures contracts.

(f) Cash Held by Broker

The Fund’s arrangement with the Commodity Broker requires the Fund to meet its variation margin requirement related to the price movements, both positive and negative, on futures contracts held by the Fund by keeping cash on deposit with the Commodity Broker. The Fund defines cash and cash equivalents held by the Commodity Broker to be highly liquid investments with original maturities of three months or less, when purchased. As of December 31, 2011, the Fund had cash held with the Commodity Broker of $525,057,810, of which $376,223,544 was on deposit to satisfy the Fund’s negative variation margin on open futures contracts. As of December 31, 2010, the Fund had cash held with the Commodity Broker of $57,572,732, of which $5,640,739 was restricted. Restrictions on cash held by broker pertain to the settlement of closed futures contracts traded on the London Metals Exchange. There were no cash equivalents held by the Fund as of December 31, 2011 and 2010.

(g) Income Taxes

The Fund is classified as a partnership for U.S. federal income tax purposes. Accordingly, the Fund will not incur U.S. federal income taxes. No provision for federal, state, and local income taxes has been made in the accompanying financial statements, as investors are individually liable for income taxes, if any, on their allocable share of the Fund’s income, gain, loss, deductions and other items.

The major tax jurisdiction for the Fund and the earliest tax year subject to examination: United States 2008.

(h) Futures Contracts

All commodity futures contracts are held and used for trading purposes. The commodity futures are recorded on a trade date basis and open contracts are recorded in the statement of financial condition at fair value on the last business day of the period, which represents market value for those commodity futures for which market quotes are readily available. However, when market closing prices are not available, the Managing Owner may value an asset of the Fund pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards. Realized gains (losses) and changes in unrealized appreciation (depreciation) on open positions are determined on a specific identification basis and recognized in the statement of income and expenses in the period in which the contract is closed or the changes occur, respectively. As of December 31, 2011 and 2010, the futures contracts held by the Fund were in a net unrealized depreciation position of $376,223,544 and a net unrealized appreciation position of $563,328,004, respectively.

52

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements—(Continued)

December 31, 2011

(i) Management Fee

The Fund pays the Managing Owner a management fee (the “Management Fee”), monthly in arrears, in an amount equal to 0.85% per annum of the daily net asset value of the Fund. The Management Fee is paid in consideration of the Managing Owner’s commodity futures trading advisory services. The Management Fee payable by the Fund was increased to 0.85% from 0.75% per annum of the daily net asset value of the Fund, effective January 4, 2010.

(j) Brokerage Commissions and Fees

The Fund incurs all brokerage commissions, including applicable exchange fees, NFA fees, give-up fees, pit brokerage fees and other transaction related fees and expenses charged in connection with trading activities by the Commodity Broker. These costs are recorded as brokerage commissions and fees in the statement of income and expenses as incurred. The Commodity Broker’s brokerage commissions and trading fees are determined on a contract-by-contract basis. On average, total charges paid to the Commodity Broker were less than $10.00 per round-turn trade for the Years Ended December 31, 2011, 2010 and 2009.

(k) Routine Operational, Administrative and Other Ordinary Expenses

The Managing Owner assumes all routine operational, administrative and other ordinary expenses of the Fund, including, but not limited to, computer services, the fees and expenses of the Trustee, legal and accounting fees and expenses, tax preparation expenses, filing fees and printing, mailing and duplication costs. Accordingly, all such expenses are not reflected in the statement of income and expenses of the Fund.

(l) Organizational and Offering Costs

All organizational and offering expenses of the Fund are incurred and assumed by the Managing Owner. The Fund is not responsible to the Managing Owner for the reimbursement of organizational and offering costs. Expenses incurred in connection with the continuous offering of Shares also will be paid by the Managing Owner.

(m) Non-Recurring and Unusual Fees and Expenses

The Fund pays all fees and expenses which are non-recurring and unusual in nature. Such expenses include legal claims and liabilities, litigation costs or indemnification or other unanticipated expenses. Such fees and expenses, by their nature, are unpredictable in terms of timing and amount. For the Years Ended December 31, 2011, 2010 and 2009, the Fund did not incur such expenses.

(5) Fair Value Measurements

The Fund’s assets and liabilities recorded at fair value have been categorized based upon the fair value hierarchy discussed in Note 4(c).

Assets and Liabilities Measured at Fair Value were as follows:

	December 31, 2011			December 31, 2010
United States Treasury Obligations (Level 1)	$	5,311,719,979		$	4,489,390,393
Commodity Futures Contracts (Level 1)	$	(376,223,544	)	$	563,328,004

There were no Level 2 or Level 3 holdings as of December 31, 2011 and 2010.

(6) Financial Instrument Risk

In the normal course of its business, the Fund is a party to financial instruments with off-balance sheet risk. The term “off-balance sheet risk” refers to an unrecorded potential liability that, even though it does not appear on the balance sheet, may result in a future obligation or loss. The financial instruments used by the Fund are commodity futures, whose values are based upon an underlying asset and generally represent future commitments that have a reasonable possibility of being settled in cash or through physical delivery. The financial instruments are traded on an exchange and are standardized contracts.

Market risk is the potential for changes in the value of the financial instruments traded by the Fund due to market changes, including fluctuations in commodity prices. In entering into these futures contracts, there exists a market risk that such futures contracts may be significantly influenced by adverse market conditions, resulting in such futures contracts being less valuable. If the markets should move against all of the futures contracts at the same time, the Fund could experience substantial losses.

Credit risk is the possibility that a loss may occur due to the failure of an exchange clearinghouse to perform according to the terms of a futures contract. Credit risk with respect to exchange-traded instruments is reduced to the extent that an exchange or clearing organization acts as a counterparty to the transactions. The Fund’s risk of loss in the event of counterparty default is typically limited to

53

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements—(Continued)

December 31, 2011

the amounts recognized in the statement of financial condition and not represented by the futures contract or notional amounts of the instruments.

The Fund has not utilized, nor does it expect to utilize in the future, special purpose entities to facilitate off-balance sheet financing arrangements and has no loan guarantee arrangements or off-balance sheet arrangements of any kind, other than agreements entered into in the normal course of business noted above.

(7) Share Purchases and Redemptions

(a) Purchases

Shares may be purchased from the Fund only by Authorized Participants in one or more blocks of 200,000 Shares, called a Basket. The Fund issues Shares in Baskets only to Authorized Participants continuously as of noon, New York time, on the business day immediately following the date on which a valid order to create a Basket is accepted by the Fund, at the net asset value of 200,000 Shares as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Fund’s assets are traded, whichever is later, on the date that a valid order to create a Basket is accepted by the Fund.

(b) Redemptions

On any business day, an Authorized Participant may place an order with the Managing Owner to redeem one or more Baskets. Redemption orders must be placed by 10:00 a.m., New York time. The day on which the Managing Owner receives a valid redemption order is the redemption order date. Redemption orders are irrevocable. The redemption procedures allow Authorized Participants to redeem Baskets. Individual shareholders may not redeem directly from the Fund.

By placing a redemption order, an Authorized Participant agrees to deliver the Baskets to be redeemed through The Depository Trust Company’s (the “DTC”) book-entry system to the Fund not later than noon, New York time, on the business day immediately following the redemption order date. By placing a redemption order, and prior to receipt of the redemption proceeds, an Authorized Participant’s DTC account is charged the non-refundable transaction fee due for the redemption order.

The redemption proceeds from the Fund consist of the cash redemption amount. The cash redemption amount is equal to the net asset value of the number of Basket(s) requested in the Authorized Participant’s redemption order as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Fund’s assets are traded, whichever is later, on the redemption order date. The Fund will distribute the cash redemption amount at noon, New York time, on the business day immediately following the redemption order date through DTC to the account of the Authorized Participant as recorded on DTC’s book-entry system.

The redemption proceeds due from the Fund are delivered to the Authorized Participant at noon, New York time, on the business day immediately following the redemption order date if, by such time on such business day immediately following the redemption order date, the Fund’s DTC account has been credited with the Baskets to be redeemed. If the Fund’s DTC account has not been credited with all of the Baskets to be redeemed by such time, the redemption proceeds are delivered to the extent of whole Baskets received. Any remainder of the redemption proceeds are delivered on the next business day to the extent of remaining whole Baskets received if the Managing Owner receives the fee applicable to the extension of the redemption distribution date which the Managing Owner may, from time-to-time, determine and the remaining Baskets to be redeemed are credited to the Fund’s DTC account by noon, New York time, on such next business day. Any further outstanding amount of the redemption order will be canceled. The Managing Owner is also authorized to deliver the redemption proceeds notwithstanding that the Baskets to be redeemed are not credited to the Fund’s DTC account by noon, New York time, on the business day immediately following the redemption order date if the Authorized Participant has collateralized its obligation to deliver the Baskets through DTC’s book-entry system on such terms as the Managing Owner may from time-to-time agree upon.

(c) Share Transactions

	Shares	Paid in Capital			Shares			Paid in Capital			Shares			Paid in Capital
	Year Ended	Year Ended			Year Ended			Year Ended			Year Ended			Year Ended
	December 31,	December 31,			December 31,			December 31,			December 31,			December 31,
	2011	2011			2010			2010			2009			2009
Shares Sold	58,800,000	$	1,714,838,522			45,600,000		$	1,086,574,324			130,000,000		$	2,882,078,200
Shares Redeemed	(40,200,000)		(1,121,135,254	)		(38,400,000	)		(875,040,222	)		(8,000,000	)		(174,460,744	)
Net Increase	18,600,000	$	593,703,268			7,200,000		$	211,534,102			122,000,000		$	2,707,617,456

54

PowerShares DB Commodity Index Tracking Fund

Notes to Financial Statements—(Continued)

December 31, 2011

(8) Profit and Loss Allocations and Distributions

Pursuant to the Trust Agreement, income and expenses are allocated pro rata to the Managing Owner as holder of the General Shares and to the Shareholders monthly based on their respective percentage interests as of the close of the last trading day of the preceding month. Any losses allocated to the Managing Owner (as the owner of the General Shares) which are in excess of the Managing Owner’s capital balance are allocated to the Shareholders in accordance with their respective interest in the Fund as a percentage of total shareholders’ equity. Distributions (other than redemption of units) may be made at the sole discretion of the Managing Owner on a pro rata basis in accordance with the respective capital balances of the shareholders.

No distributions were paid for the Years Ended December 31, 2011, 2010 or 2009.

(9) Commitments and Contingencies

The Managing Owner, either in its own capacity or in its capacity as the Managing Owner and on behalf of the Fund, has entered into various service agreements that contain a variety of representations, or provide indemnification provisions related to certain risks service providers undertake in performing services which are in the best interests of the Fund. As of December 31, 2011 and 2010 no claims had been received by the Fund and it was therefore not possible to estimate the Fund’s potential future exposure under such indemnification provisions.

(10) Net Asset Value and Financial Highlights

The Fund is presenting the following net asset value and financial highlights related to investment performance for a Share outstanding for the Years Ended December 31, 2011, 2010 and 2009. The net investment income and total expense ratios are calculated using average net asset value. The net asset value presentation is calculated using daily Shares outstanding. The total return is based on the change in net asset value of the Shares during the period. An individual investor’s return and ratios may vary based on the timing of capital transactions.

Net asset value per Share is the net asset value of the Fund divided by the number of outstanding Shares.

	Year Ended
	December 31, 2011			December 31, 2010			December 31, 2009
Net Asset Value
Net asset value per share, beginning of period	$	27.57		$	24.65		$	21.42
Net realized and change in unrealized gain (loss) on United States Treasury Obligations and Futures		(0.51	)		3.10			3.38
Net investment income (loss)		(0.23	)		(0.18	)		(0.15	)
Net income (loss)		(0.74	)		2.92			3.23
Distributions of net investment income on Shares		—			—			—
Net increase (decrease)		(0.74	)		2.92			3.23
Net asset value per Share, end of period	$	26.83		$	27.57		$	24.65
Market value per Share, beginning of period	$	27.55		$	24.62		$	21.19
Market value per Share, end of period	$	26.84		$	27.55		$	24.62
Ratio to average Net Assets
Net investment income (loss)		(0.81	)%		(0.76	)%		(0.68	)%
Total expenses		0.87	%		0.88	%		0.81	%
Total Return, at net asset value		(2.68	)%		11.85	%		15.08	%
Total Return, at market value		(2.58	)%		11.90	%		16.19	%

(11) Subsequent Events

The Fund evaluated the need for disclosures and/or adjustments resulting from subsequent events through the date the financial statements were issued. This evaluation did not result in any subsequent events that necessitated disclosures and/or adjustments.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

55

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of the management of the Managing Owner, including Hans Ephraimson, its Chief Executive Officer, and Michael Gilligan, its Principal Financial Officer, the Fund carried out an evaluation of the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rule 13a-15(e) or 15d-15(e) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this annual report, and, based upon that evaluation, Hans Ephraimson, the Chief Executive Officer, and Michael Gilligan, the Principal Financial Officer, of the Managing Owner, concluded that the Fund’s disclosure controls and procedures were effective to ensure that information the Fund is required to disclose in the reports that it files or submits with the Securities and Exchange Commission (the “SEC”) under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms, and to ensure that information required to be disclosed by the Fund in the reports that it files or submits under the Exchange Act is accumulated and communicated to management of the Managing Owner, including its Chief Executive Officer and Principal Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There has been no change in internal control over financial reporting (as defined in the Rules 13a-15(f) and 15d-15(f) of the Exchange Act) that occurred during the Fund’s last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Fund’s internal control over financial reporting.

Management’s Annual Report on Internal Control Over Financial Reporting

Management of the Managing Owner is responsible for establishing and maintaining adequate internal control over financial reporting, as defined under Rules 13a-15(f) and 15d-15(f) of the Exchange Act, for the Fund. Hans Ephraimson, the Chief Executive Officer, and Michael Gilligan, the Principal Financial Officer, of the Managing Owner, assessed the effectiveness of the Fund’s internal control over financial reporting as of December 31, 2011. Their report in connection with their assessment may be found in the “Report of Management on Internal Control Over Financial Reporting” on page 38 of this Annual Report on Form 10-K.

The Fund’s independent registered public accounting firm, KPMG LLP, has audited the Fund’s internal control over financial reporting as of December 31, 2011, as stated in their report on page 39 of this Form 10-K.

ITEM 9B. OTHER INFORMATION

None.

56

PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT AND CORPORATE GOVERNANCE

Board of Directors and Executive Officers

The Fund has no directors or executive officers and also does not have any employees. It is managed by the Managing Owner.

The current board of managers and executive officers of the Managing Owner are as follows:

Name	Age		Position
Hans Ephraimson		47	Managing Director, Chief Executive Officer and Member of the Board of Managers
Michael Gilligan		45	Principal Financial Officer
Martin Kremenstein		35	Chief Operating Officer, Chief Investment Officer, Director and Member of the Board of Managers
Alex Depetris		31	Vice President and Member of the Board of Managers

Hans Ephraimson joined Deutsche Bank AG, a large international financial institution, in June 1986 and is a Managing Director in the North American Structured Sales and the DBX Group, which is the team that structures and manages exchange-traded products. Mr. Ephraimson has also been a Desk Head for foreign exchange in Deutsche Bank AG’s Institutional Clients Group for North America since January 1999. Mr. Ephraimson serves as a member of the Board of Managers and Chief Executive Officer of the Managing Owner. Mr. Ephraimson has been a principal and associated person of the Managing Owner since July 9, 2008 and June 25, 2009, respectively, and an associate member of the NFA since June 25, 2009. Mr. Ephraimson received his Bachelors of Science from Syracuse University in 1986 and an MBA from Columbia University in 1995.

Michael Gilligan joined Deutsche Bank AG, a large international financial institution, in March 2008 and is a Director in the Finance Group. Mr. Gilligan serves as a principal and Principal Financial Officer of the Managing Owner. Mr. Gilligan has been a principal of the Managing Owner since April 29, 2008. Prior to joining Deutsche Bank, Mr. Gilligan worked for Credit Suisse, a large international financial institution, from September 1998 to March 2008 and held a number of positions in finance, including Controller of their residential and commercial real estate business; immediately prior to joining Deutsche Bank, Mr. Gilligan was the Chief Operating Officer of the Americas Credit Trading Group, a business group within Credit Suisse, from May 2007 to March 2008 with responsibility for the U.S. High Grade bond trading and Emerging Markets credit trading desks, his duties included business planning and management. Mr. Gilligan is a Chartered Accountant and received his Bachelors of Science in Management from Trinity College in 1989 and his Post Graduate Diploma in Professional Accounting from University College Dublin in 1990.

Martin Kremenstein joined Deutsche Bank AG, a large international financial institution, in August 2006, and serves as a Director in the DBX Group with responsibility for providing currency and commodity-based investor solutions to the DB sales force in the Americas. The DBX Group is the team that structures and manages exchange-traded products. Mr. Kremenstein serves as the Chief Operating Officer, Chief Investment Officer and Director of the Managing Owner. Mr. Kremenstein has been a principal and associated person of the Managing Owner since November 1, 2006 and November 3, 2006, respectively, and an associate member of the NFA since November 3, 2006. Prior to joining Deutsche Bank, Mr. Kremenstein worked for JPMorgan Chase, a large international financial institution, from September 1998 to August 2006, initially in London and then, from June 2003, in New York. From February 2005 to August 2006, Mr. Kremenstein worked in Market Risk Management, covering the Credit Portfolio division initially as an Associate, and later as a Vice President. From September 1998 to February 2005, Mr. Kremenstein worked in various roles in Operations at JPMorgan Chase, including managing the Credit Portfolio Credit Hedge Analysis team, managing projects for the Credit Portfolio Market Hedge team, and managing P&L production for the Counterparty Risk Book (London). Mr. Kremenstein received his B.A. from the University of Leeds in 1998.

Alex Depetris joined Deutsche Bank AG, a large international financial institution, in June 2008 and serves as a Vice President in the DBX Group with responsibility for providing currency and commodity-based investor solutions to the DB sales force in the Americas. The DBX Group is the team that structures and manages exchange-traded products. Mr. Depetris serves as a Vice President of the Managing Owner. Mr. Depetris has been a principal and associated person of the Managing Owner since April 13, 2009 and June 17, 2009, respectively, and an associate member of the NFA since June 17, 2009. From December 2006 to May 2008, Mr. Depetris was an associate with the law firm of Arnold & Porter LLP in New York, and prior to that he was an associate with the law firm Sullivan & Worcester LLP in Boston, Massachusetts from September 2005 through November 2006. Mr. Depetris received his J.D. from Boston University School of Law in 2005 and his Bachelors of Science in Finance from University of Maryland, College Park in 2002.

Code of Ethics

The Fund has no officers or employees and is managed by DB Commodity Services LLC. DB Commodity Services LLC has adopted the code of ethics of its parent, Deutsche Bank AG, which applies to all of its employees and is available at http://www.deutsche-bank.com/corporate-governance, under the heading “Codes of Ethics”. Other than several nonsubstantive changes

57

made in May 2006, there have been no amendments or waivers to this code of ethics since its adoption. Information regarding any future amendments or waivers will be published on the aforementioned website.

ITEM 11. EXECUTIVE COMPENSATION

The Fund has no employees, officers or directors and is managed by DB Commodity Services LLC. None of the directors or officers of DB Commodity Services LLC receive compensation from the Fund. DB Commodity Services LLC receives a monthly Management Fee of 1/12^th of 0.85% per annum of the daily net asset value of the Fund at the end of each month. In addition, Deutsche Bank Securities Inc., an affiliate of DB Commodity Services LLC, serves as the futures commission merchant and receives brokerage commissions paid by the Fund in connection with its futures trading. Prior to January 4, 2010, the Management Fee payable to DB Commodity Services LLC was 0.75% per annum of the daily net asset value of the Fund.

As of the Year Ended December 31, 2011, the Fund has incurred Management Fees of $49,989,842 of which $46,089,150 had been paid at December 31, 2011. Management Fees of $3,900,692 were unpaid at December 31, 2011 and are reported as a liability on the statement of financial condition.

As of the Year Ended December 31, 2011, the Fund has incurred brokerage commissions of $1,129,062 to Deutsche Bank Securities Inc. of which $1,127,202 had been paid at December 31, 2011. Brokerage commissions of $1,860 were unpaid at December 31, 2011 and are reported as a liability on the statement of financial condition.

As of the Year Ended December 31, 2010, the Fund has incurred Management Fees of $38,197,079 of which $34,689,896 had been paid at December 31, 2010. Management Fees of $3,507,183 were unpaid at December 31, 2010 and are reported as a liability on the statement of financial condition.

As of the Year Ended December 31, 2010, the Fund has incurred brokerage commissions of $1,268,413 to Deutsche Bank Securities Inc. of which $1,259,394 had been paid at December 31, 2010. Brokerage commissions of $9,019 were unpaid at December 31, 2010 and are reported as a liability on the statement of financial condition.

As of the Year Ended December 31, 2009, the Fund has incurred Management Fees of $20,523,877 of which $17,838,284 had been paid at December 31, 2009. Management Fees of $2,685,593 were unpaid at December 31, 2009 and are reported as a liability on the statement of financial condition.

As of the Year Ended December 31, 2009, the Fund has incurred brokerage commissions of $1,664,714 to Deutsche Bank Securities Inc. of which $1,648,714 had been paid at December 31, 2009. Brokerage commissions of $16,000 were unpaid at December 31, 2009 and are reported as a liability on the statement of financial condition.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The Fund has no officers or directors. The following table sets forth certain information regarding beneficial ownership of our General Shares and Shares as of December 31, 2011, by management. No person is known by us to own beneficially more than 5% of the outstanding shares of such class.

Title of Class	Name and Address of Beneficial Owner	Amount and Nature of Beneficial Ownership	Percent of Class
General Shares	DB Commodity Services LLC 60 Wall Street New York, New York 10005	40	100%
Shares	Martin Kremenstein	100	Less than 0.01%
	Directors and Officers of DB Commodity Services LLC as a group	100	Less than 0.01%

The Fund has no securities authorized for issuance under equity compensation plans.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

See Item 11.

58

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

Audit and Non-Audit Fees

The following table sets forth the fees for professional services rendered by KPMG LLP, the Fund’s independent registered public accounting firm.

	Fiscal Year Ended December 31, 2011		Fiscal Year Ended December 31, 2010
Audit Fees	$	100,600	$	102,878
Audit-Related Fees	$	0	$	0
Tax Fees	$	0	$	0
All Other Fees	$	0	$	0
Total	$	100,600	$	102,878

Approval of Independent Registered Public Accounting Firm Services and Fees

The Managing Owner approved all of the services provided by KPMG LLP to the Fund described above. The Managing Owner pre-approves all audit and allowed non-audit services of the Fund’s independent registered public accounting firm, including all engagement fees and terms.

59

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)(1) Financial Statements

See financial statements commencing on page 41 hereof.

(a)(2) Financial Statement Schedules

No financial statement schedules are filed herewith because (i) such schedules are not required or (ii) the information required has been presented in the aforementioned financial statements.

(a)(3) Exhibits

The following documents (unless otherwise indicated) are filed herewith and made a part of this Annual Report:

EXHIBIT NO.	DESCRIPTION
4.1	Second Amended and Restated Declaration of Trust and Trust Agreement of the Registrant 5
4.2	Form of Participant Agreement 2
10.1	Form of Escrow Agreement 3
10.2	Customer Agreement6
10.3	Form of Administration Agreement 1
10.4	Form of Global Custody Agreement 1
10.5	Form of Transfer Agency and Service Agreement 1
10.6	Form of Distribution Services Agreement 1
10.7	AIM Second Amended and Restated Marketing Agreement 4
23.1	Consent of Independent Registered Public Accounting Firm
31.1	Certification required under Exchange Act Rules 13a-14 and 15d-14 (filed herewith)
31.2	Certification required under Exchange Act Rules 13a-14 and 15d-14 (filed herewith)
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith)
32.2	Certification of Principal Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith)
101	Interactive data file pursuant to Rule 405 of Regulation S-T: (i) the Statements of Financial Condition of PowerShares DB Commodity Index Tracking Fund—December 31, 2011 and December 31, 2010, (ii) the Schedule of Investments of PowerShares DB Commodity Index Tracking Fund—December 31, 2011, (iii) the Schedule of Investments of PowerShares DB Commodity Index Tracking Fund—December 31, 2010, (iv) the Statements of Income and Expenses of PowerShares DB Commodity Index Tracking Fund—Years Ended December 31, 2011, 2010 and 2009, (v) the Statement of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund—Year Ended December 31, 2011, (vi) the Statement of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund—Year Ended December 31, 2010, (vii) the Statement of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund—Year Ended December 31, 2009, (viii) the Statements of Cash Flows of PowerShares DB Commodity Index Tracking Fund—Years Ended December 31, 2011, 2010 and 2009, (ix) Notes to Financial Statements of PowerShares DB Commodity Index Tracking Fund.

1 Previously filed as an exhibit to Pre-Effective Amendment No. 2 to Form S-1, SEC Registration Number 333-125325, on August 5, 2005 and incorporated herein by reference.

60

2 Previously filed as an exhibit to Pre-Effective Amendment No. 3 to Form S-1, SEC Registration Number 333-125325, on September 13, 2005 and incorporated herein by reference.

3 Previously filed as an exhibit to Pre-Effective Amendment No. 5 to Form S-1, SEC Registration Number 333-125325, on December 21, 2005 and incorporated herein by reference.

4 Previously filed as an exhibit to Registration Statement on Form S-1, SEC Registration Number 333-141631, on March 28, 2007 and incorporated herein by reference.

5 Previously filed as an exhibit to the Post-Effective Amendment No. 2 to Form S-3, SEC Registration Number 333-158733, on January 3, 2011 and incorporated herein by reference.

6 Previously filed as an exhibit to Form 10-K (SEC File No. 001-32726) on February 28, 2011 and incorporated herein by reference.

61

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Powershares DB Commodity Index Tracking Fund
	By:	DB Commodity Services LLC,
		its Managing Owner
		By:	/S/    HANS EPHRAIMSON
		Name:	Hans Ephraimson
		Title:	Chief Executive Officer
Dated: February 28, 2012		By:	/S/    MICHAEL GILLIGAN
		Name:	Michael Gilligan
		Title:	Principal Financial Officer

62

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Managers

DB Commodity Services LLC:

We consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-158733) of PowerShares DB Commodity Index Tracking Fund of our reports dated February 28, 2012, with respect to the statements of financial condition, including the schedules of investments, of PowerShares DB Commodity Index Tracking Fund as of December 31, 2011 and 2010, and the related statements of income and expenses, changes in shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2011 and the effectiveness of internal control over financial reporting as of December 31, 2011, which reports appear in the December 31, 2011 Annual Report on Form 10-K of PowerShares DB Commodity Index Tracking Fund. We also consent to the reference to our firm under the heading “Experts” in the above noted Registration Statement.

/s/ KPMG LLP

New York, New York

February 28, 2012

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Hans Ephraimson, certify that:

1. I have reviewed this Annual Report on Form 10-K of PowerShares DB Commodity Index Tracking Fund;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: February 28, 2012	/s/ Hans Ephraimson
	Hans Ephraimson
	Chief Executive Officer

E-1

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael Gilligan, certify that:

1. I have reviewed this Annual Report on Form 10-K of PowerShares DB Commodity Index Tracking Fund;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: February 28, 2012	/s/ Michael Gilligan
	Michael Gilligan
	Principal Financial Officer

E-2

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, Hans Ephraimson, Chief Executive Officer of DB Commodity Services LLC, the Managing Owner of PowerShares DB Commodity Index Tracking Fund (the “Trust”), hereby certifies pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Trust’s Annual Report on Form 10-K for the year ended December 31, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of the Trust.

Dated: February 28, 2012	/s/ Hans Ephraimson
	Hans Ephraimson
	Chief Executive Officer

E-3

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, Michael Gilligan, Principal Financial Officer of DB Commodity Services LLC, the Managing Owner of PowerShares DB Commodity Index Tracking Fund (the “Trust”), hereby certifies pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Trust’s Annual Report on Form 10-K for the year ended December 31, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of the Trust.

Dated: February 28, 2012	/s/ Michael Gilligan
	Michael Gilligan
	Principal Financial Officer

E-4

XML

Net Asset Value And Financial Highlights (Net Asset Value) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2007
Net Asset Value And Financial Highlights [Abstract]
Net asset value per share, beginning of period	$ 27.57	$ 24.65	$ 21.42	$ 27.57
Net realized and change in unrealized gain (loss) on United States Treasury Obligations and Futures	$ (0.51)	$ 3.10	$ 3.38
Net investment income (loss)	$ (0.23)	$ (0.18)	$ (0.15)
Net income (loss)	$ (0.74)	$ 2.92	$ 3.23
Distributions of net investment income on Shares
Net increase (decrease)	$ (0.74)	$ 2.92	$ 3.23
Net asset value per Share, end of period	$ 26.83	$ 27.57	$ 24.65	$ 27.57
Market value per Share, beginning of period	$ 27.55	$ 24.62	$ 21.19	$ 27.55
Market value per Share, end of period	$ 26.84	$ 27.55	$ 24.62	$ 27.55
Net investment income (loss)	(0.81%)	(0.76%)	(0.68%)
Total expenses	0.87%	0.88%	0.81%
Total Return, at net asset value	(2.68%)	11.85%	15.08%
Total Return, at market value	(2.58%)	11.90%	16.19%

XML

Net Asset Value And Financial Highlights (Tables)

12 Months Ended

Dec. 31, 2011

Net Asset Value And Financial Highlights [Abstract]

Net Asset Value

	Year Ended
	December 31, 2011			December 31, 2010			December 31, 2009
Net Asset Value
Net asset value per share, beginning of period	$	27.57		$	24.65		$	21.42
Net realized and change in unrealized gain (loss) on United States Treasury Obligations and Futures		(0.51	)		3.10			3.38
Net investment income (loss)		(0.23	)		(0.18	)		(0.15	)
Net income (loss)		(0.74	)		2.92			3.23
Distributions of net investment income on Shares		—			—			—
Net increase (decrease)		(0.74	)		2.92			3.23
Net asset value per Share, end of period	$	26.83		$	27.57		$	24.65
Market value per Share, beginning of period	$	27.55		$	24.62		$	21.19
Market value per Share, end of period	$	26.84		$	27.55		$	24.62
Ratio to average Net Assets
Net investment income (loss)		(0.81	)%		(0.76	)%		(0.68	)%
Total expenses		0.87	%		0.88	%		0.81	%
Total Return, at net asset value		(2.68	)%		11.85	%		15.08	%
Total Return, at market value		(2.58	)%		11.90	%		16.19	%

XML

Statement Of Changes In Shareholders' Equity (USD $)	General Shares [Member] Paid In Capital [Member] USD ($)	General Shares [Member] Accumulated Earnings (Deficit) [Member] USD ($)	General Shares [Member] Total Shareholders' Equity [Member] USD ($)	General Shares [Member]	Shares [Member] Paid In Capital [Member] USD ($)	Shares [Member] Accumulated Earnings (Deficit) [Member] USD ($)	Shares [Member] Total Shareholders' Equity [Member] USD ($)	Shares [Member]	Paid In Capital [Member] USD ($)	Total Shareholders' Equity [Member] USD ($)	Non-Controlling Interest [Member] USD ($)	Total USD ($)
Balance - Value at Dec. 31, 2008	$ 1,000	$ (143)	$ 857		$ 1,359,626,738	$ (160,381,515)	$ 1,199,245,223			$ 1,199,246,080	$ 857	$ 1,199,246,937
Balance - Shares at Dec. 31, 2008				40				56,000,000
Sale of Shares - Value					2,882,078,200		2,882,078,200		2,882,078,200	2,882,078,200		2,882,078,200
Sale of Shares - Shares								130,000,000
Redemption of Shares - Value					(174,460,744)		(174,460,744)			(174,460,744)		(174,460,744)
Redemption of Shares - Shares								(8,000,000)
Net Income (Loss)
Net investment income (loss)		(7)	(7)			(18,760,769)	(18,760,769)			(18,760,776)	(7)	(18,760,783)
Net realized gain (loss) on United States Treasury Obligations and Futures		(155)	(155)			(410,327,485)	(410,327,485)			(410,327,640)	(155)	(410,327,795)
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures		291	291			910,178,048	910,178,048			910,178,339	291	910,178,630
Net Income (Loss)		129	129			481,089,794	481,089,794			481,089,923	129	481,090,052
Balance - Value at Dec. 31, 2009	1,000	(14)	986		4,067,244,194	320,708,279	4,387,952,473			4,387,953,459	986	4,387,954,445
Balance - Shares at Dec. 31, 2009				40				178,000,000
Sale of Shares - Value					1,086,574,324		1,086,574,324		1,086,574,324	1,086,574,324		1,086,574,324
Sale of Shares - Shares								45,600,000
Redemption of Shares - Value					(875,040,222)		(875,040,222)			(875,040,222)		(875,040,222)
Redemption of Shares - Shares								(38,400,000)
Net Income (Loss)
Net investment income (loss)		(8)	(8)			(34,384,026)	(34,384,026)			(34,384,034)	(8)	(34,384,042)
Net realized gain (loss) on United States Treasury Obligations and Futures		46	46			199,561,688	199,561,688			199,561,734	46	199,561,780
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures		79	79			342,110,587	342,110,587			342,110,666	79	342,110,745
Net Income (Loss)		117	117			507,288,249	507,288,249			507,288,366	117	507,288,483
Redemption of non-controlling interest											(1,103)	(1,103)
Balance - Value at Dec. 31, 2010	1,000	103	1,103		4,278,778,296	827,996,528	5,106,774,824			5,106,775,927		5,106,775,927
Balance - Shares at Dec. 31, 2010				40				185,200,000
Sale of Shares - Value					1,714,838,522		1,714,838,522		1,714,838,522			1,714,838,522
Sale of Shares - Shares								58,800,000
Redemption of Shares - Value					(1,121,135,254)		(1,121,135,254)					(1,121,135,254)
Redemption of Shares - Shares								(40,200,000)
Net Income (Loss)
Net investment income (loss)		(6)	(6)			(47,459,742)	(47,459,742)					(47,459,748)
Net realized gain (loss) on United States Treasury Obligations and Futures		97	97			754,104,456	754,104,456					754,104,553
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures		(121)	(121)			(939,741,310)	(939,741,310)					(939,741,431)
Net Income (Loss)		(30)	(30)			(233,096,596)	(233,096,596)					(233,096,626)
Balance - Value at Dec. 31, 2011	$ 1,000	$ 73	$ 1,073		$ 4,872,481,564	$ 594,899,932	$ 5,467,381,496					$ 5,467,382,569
Balance - Shares at Dec. 31, 2011				40				203,800,000

XML

Summary Of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Summary Of Significant Accounting Policies [Line Items]
Percentage of limited units purchased by fund	100.00%
Restricted investments	$ 425,657,099	$ 330,490,820
Cash and cash equivalents, original maturities, maximum number of months	3
Other Cash	525,057,810	57,572,732
Cash held	376,223,544
Cash held by broker, restricted	0	5,640,739
Cash equivalents held	0	0
Net unrealized depreciation on future contracts	376,223,544
Net unrealized appreciation on future contracts		563,328,004
Management fee percentage per annum of daily net assets	0.85%
Management fee per annum of daily net assets, previous	0.75%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Average charges paid to broker per round-turn trade, maximum	$ 10.00	$ 10.00	$ 10.00

XML

Service Providers And Related Party Agreements (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Service Providers And Related Party Agreements [Line Items]
Management fees	$ 49,989,842	$ 38,197,079	$ 20,523,877
Accounts payable	3,900,692	3,507,183
Brokerage commissions and fees	1,129,062	1,268,413	1,664,714
Deutsche Bank Securities Inc. [Member]
Service Providers And Related Party Agreements [Line Items]
Payable to broker	$ 1,860	$ 9,019

XML

Fair Value Measurements (Assets And Liabilities Measured At Fair Value) (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
United States Treasury Obligations (Level 1)	$ 5,311,719,979	$ 4,489,390,393
Commodity Futures Contracts (Level 1)	(376,223,544)	563,328,004
Level 2 or Level 3 holdings during the period	0	0
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
United States Treasury Obligations (Level 1)	5,311,719,979	4,489,390,393
Commodity Futures Contracts (Level 1)	$ (376,223,544)	$ 563,328,004

XML

Share Purchases And Redemptions (Narrative) (Details)	12 Months Ended
	Dec. 31, 2011
Share Purchases And Redemptions [Abstract]
Number of Shares issued per Basket	200,000

XML

Statements Of Income And Expenses (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income
Interest Income	$ 3,659,156	$ 5,081,450	$ 3,427,808
Expenses
Management Fee	49,989,842	38,197,079	20,523,877
Brokerage Commissions and Fees	1,129,062	1,268,413	1,664,714
Total Expenses	51,118,904	39,465,492	22,188,591
Net investment income (loss)	(47,459,748)	(34,384,042)	(18,760,783)
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Futures and Foreign Currency Translation
United States Treasury Obligations	69,300	(982)	(13,235)
Futures	754,035,253	199,582,317	(410,314,560)
Foreign Currency Translation		(19,555)
Net realized gain (loss)	754,104,553	199,561,780	(410,327,795)
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations	(189,883)	109,485	66,127
Futures	(939,551,548)	342,001,260	910,112,503
Net change in unrealized gain (loss)	(939,741,431)	342,110,745	910,178,630
Net realized and net change in unrealized gain (loss) on United States Treasury Obligations, Futures and Foreign Currency Translation	(185,636,878)	541,672,525	499,850,835
Net Income (Loss)	(233,096,626)	507,288,483	481,090,052
Less: net income attributed to the non-controlling interest in subsidiary - related party		(117)	(129)
Net Income (Loss) Attributable to PowerShares DB Commodity Index Tracking Fund	$ (233,096,626)	$ 507,288,366	$ 481,089,923

XML

Share Purchases And Redemptions (Summary Of Share Transactions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Share Purchases And Redemptions [Line Items]
Shares Sold - Paid in Capital	$ 1,714,838,522	$ 1,086,574,324	$ 2,882,078,200
Shares [Member]
Share Purchases And Redemptions [Line Items]
Shares Sold - Shares	58,800,000	45,600,000	130,000,000
Shares Redeemed - Shares	(40,200,000)	(38,400,000)	(8,000,000)
Net Increase - Shares	18,600,000	7,200,000	122,000,000
Paid In Capital [Member]
Share Purchases And Redemptions [Line Items]
Shares Sold - Paid in Capital	1,714,838,522	1,086,574,324	2,882,078,200
Shares Redeemed - Paid in Capital	(1,121,135,254)	(875,040,222)	(174,460,744)
Net Increase - Paid in Capital	$ 593,703,268	$ 211,534,102	$ 2,707,617,456

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Statements Of Financial Condition (USD $)	Dec. 31, 2011	Dec. 31, 2010
Assets
United States Treasury Obligations, at fair value (cost $5,311,724,492 and $4,489,205,023 respectively)	$ 5,311,719,979	$ 4,489,390,393
Cash held by broker (restricted $0 and $5,640,739, respectively)	525,057,810	57,572,732
Net unrealized appreciation (depreciation) on futures contracts	(376,223,544)	563,328,004
Deposits with broker	5,460,554,245	5,110,291,129
Receivable for shares issued	10,730,876
Other assets		1,000
Total assets	5,471,285,121	5,110,292,129
Liabilities
Management fee payable	3,900,692	3,507,183
Brokerage fee payable	1,860	9,019
Total liabilities	3,902,552	3,516,202
Commitments and Contingencies (Note 9)
General shares:
Paid in capital - 40 shares issued and outstanding as of December 31, 2011 and 2010, respectively	1,000	1,000
Accumulated earnings (deficit)	73	103
Total General shares	1,073	1,103
Shares:
Paid in capital - 203,800,000 and 185,200,000 redeemable Shares issued and outstanding as of December 31, 2011 and 2010, respectively	4,872,481,564	4,278,778,296
Accumulated earnings (deficit)	594,899,932	827,996,528
Total Shares	5,467,381,496	5,106,774,824
Total shareholders' equity	5,467,382,569	5,106,775,927
Total liabilities and equity	$ 5,471,285,121	$ 5,110,292,129
Net asset value per share
General Shares	26.83	27.58
Shares	$ 26.83	$ 27.57

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Schedule Of Investments (Futures Contracts) (USD $)	Dec. 31, 2010 Aluminum (3,355 Contracts, Settlement Date September 19, 2011) [Member]	Dec. 31, 2010 Brent Crude (6,913 Contracts, Settlement Date January 14, 2011) [Member]	Dec. 31, 2010 Copper (955 Contracts, Settlement Date March 14, 2011) [Member]	Dec. 31, 2010 Corn (3,270 Contracts, Settlement Date March 14, 2011) [Member]	Dec. 31, 2010 Corn (6,407 Contracts, Settlement Date December 14, 2011) [Member]	Dec. 31, 2010 Gasoline (6,485 Contracts, Settlement Date November 30, 2011) [Member]	Dec. 31, 2010 Light Sweet Crude Oil (6,824 Contracts, Settlement Date June 21, 2011) [Member]	Dec. 31, 2010 Gold (2,810 Contracts, Settlement Date August 29, 2011) [Member]	Dec. 31, 2010 Heating Oil (6,032 Contracts, Settlement Date May 31, 2011) [Member]	Dec. 31, 2010 Natural Gas (6,081 Contracts, Settlement Date September 28, 2011) [Member]	Dec. 31, 2010 Red Wheat (2,481 Contracts, Settlement Date July 14, 2011) [Member]	Dec. 31, 2010 Silver (717 Contracts, Settlement Date December 28, 2011) [Member]	Dec. 31, 2010 Soybeans (3,084 Contracts, Settlement Date November 14, 2011) [Member]	Dec. 31, 2010 Soybeans (1,501 Contracts, Settlement Date January 13, 2012) [Member]	Dec. 31, 2010 Sugar (9,488 Contracts, Settlement Date June 30, 2011) [Member]	Dec. 31, 2010 Wheat (3,218 Contracts, Settlement Date July 14, 2011) [Member]	Dec. 31, 2010 Wheat (965 Contracts, Settlement Date December 14, 2011) [Member]	Dec. 31, 2010 Zinc (3,299 Contracts, Settlement Date May 16, 2011) [Member]	Dec. 31, 2010 Net Unrealized Appreciation On Futures Contracts [Member]	Dec. 31, 2011 Net Unrealized Depreciation On Futures Contracts [Member]	Dec. 31, 2011 Aluminum (4,467 Contracts, Settlement Date September 17, 2012) [Member]	Dec. 31, 2011 Brent Crude (6,473 Contracts, Settlement Date February 14, 2012) [Member]	Dec. 31, 2011 Copper (1,256 Contracts, Settlement Date March 19, 2012) [Member]	Dec. 31, 2011 Corn (3,323 Contracts, Settlement Date March 14, 2012) [Member]	Dec. 31, 2011 Corn (7,105 Contracts, Settlement Date December 14, 2012) [Member]	Dec. 31, 2011 Gold (2,611 Contracts, Settlement Date February 27, 2012) [Member]	Dec. 31, 2011 Heating Oil (5,738 Contracts, Settlement Date May 31, 2012) [Member]	Dec. 31, 2011 Natural Gas (8,045 Contracts, Settlement Date September 26, 2012) [Member]	Dec. 31, 2011 RBOB Gasoline (6,652 Contracts, Settlement Date November 30, 2012) [Member]	Dec. 31, 2011 Red Wheat (3,574 Contracts, Settlement Date July 13, 2012) [Member]	Dec. 31, 2011 Red Wheat (399 Contracts, Settlement Date December 14, 2012) [Member]	Dec. 31, 2011 Silver (666 Contracts, Settlement Date December 27, 2012) [Member]	Dec. 31, 2011 Soybeans (3,420 Contracts, Settlement Date November 14, 2012) [Member]	Dec. 31, 2011 Soybeans (1,967 Contracts, Settlement Date January 14, 2013) [Member]	Dec. 31, 2011 Sugar (11,967 Contracts, Settlement Date June 29, 2012) [Member]	Dec. 31, 2011 Wheat (3,448 Contracts, Settlement Date July 13, 2012) [Member]	Dec. 31, 2011 Wheat (1,034 Contracts, Settlement Date December 14, 2012) [Member]	Dec. 31, 2011 WTI Crude (7,568 Contracts, Settlement Date June 20, 2012) [Member]	Dec. 31, 2011 Zinc (4,819 Contracts, Settlement Date July 16, 2012) [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	0.14%	0.47%	1.37%	0.61%	0.16%	0.67%	1.62%	0.26%	0.93%	0.04%	0.56%	0.37%	0.76%	0.15%	2.01%	0.87%	0.03%	0.01%	11.03%	(6.88%)	(0.76%)	0.24%	(1.02%)	0.06%	(0.14%)	(0.54%)	(0.67%)	(1.48%)	(0.17%)	(0.12%)	0.00%	(0.38%)	0.07%	0.08%	(0.23%)	(0.63%)	(0.02%)	(0.38%)	(0.79%)
Fair Value	$ 7,231,369	$ 24,156,450	$ 70,201,738	$ 31,143,450	$ 8,081,812	$ 33,961,708	$ 83,185,660	$ 13,290,940	$ 47,513,239	$ 1,990,610	$ 28,609,038	$ 18,780,495	$ 38,910,775	$ 7,466,350	$ 102,491,726	$ 44,316,550	$ 1,616,513	$ 379,581	$ 563,328,004	$ (376,223,544)	$ (41,458,506)	$ 12,808,900	$ (55,719,025)	$ 3,252,000	$ (7,618,388)	$ (29,505,740)	$ (36,513,943)	$ (80,821,700)	$ (9,328,532)	$ (6,821,963)	$ 78,725	$ (21,023,215)	$ 3,854,150	$ 4,554,088	$ (12,498,528)	$ (34,172,237)	$ (1,342,712)	$ (20,883,030)	$ (43,063,888)

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Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Basis Of Presentation

(a) Basis of Presentation

The financial statements of the Fund have been prepared using U.S. generally accepted accounting principles and include the financial statements of the Fund and the Master Fund when applicable. As described in note 1, the Fund was originally formed as a master-feeder structure and such structure was collapsed on December 31, 2010. The financial statements reflect consolidation of the Fund and the Master Fund for 2009. Upon the initial offering of the Shares on January 31, 2006, the capital raised by the Fund was used to purchase 100% of the common units of beneficial interest of the Master Fund (the "Master Fund Limited Units") (excluding common units of beneficial interest of the Master Fund held by the Managing Owner (the "Master Fund General Units")). The Master Fund Limited Units owned by the Fund provided the Fund and its investors certain controlling rights and abilities over the Master Fund. Consequently, the financial statement balances of the Master Fund were consolidated with the Fund's financial statement balances for the period previously described and all significant inter-company balances and transactions were eliminated.

Use Of Estimates

(b) Use of Estimates

The preparation of the financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses and related disclosure of contingent assets and liabilities during the reporting period of the financial statements and accompanying notes. Actual results could differ from those estimates.

Financial Instruments And Fair Value

(c) Financial Instruments and Fair Value

United States Treasury Obligations and commodity futures contracts are recorded in the statements of financial condition on a trade date basis at fair value with changes in fair value recognized in earnings in each period. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price).

Financial Accounting Standards Board (FASB) fair value measurement and disclosure guidance requires a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:

Basis of Fair Value Measurement

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2: Quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly;

Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.

A financial instrument's level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

In determining fair value of United States Treasury Obligations and commodity futures contracts, the Fund uses unadjusted quoted market prices in active markets. United States Treasury Obligations and commodity futures contracts are classified within Level 1 of the fair value hierarchy. The Fund does not adjust the quoted prices for United States Treasury Obligations and commodity futures contracts.

Deposits With Broker

(d) Deposits with Broker

The Fund deposits cash and United States Treasury Obligations with its Commodity Broker subject to CFTC regulations and various exchange and broker requirements. The combination of the Fund's deposits with its Commodity Broker of cash and United States Treasury Obligations and the unrealized profit or loss on open futures contracts (variation margin) represents the Fund's overall equity in its broker trading account. To meet the Fund's initial margin requirements, the Fund holds United States Treasury Obligations. The Fund uses its cash held by the Commodity Broker to satisfy variation margin requirements. The Fund earns interest on its cash deposited with the Commodity Broker.

United States Treasury Obligations

(e) United States Treasury Obligations

The Fund records purchases and sales of United States Treasury Obligations on a trade date basis. These holdings are marked to market based on quoted market closing prices. The Fund holds United States Treasury Obligations for deposit with the Fund's Commodity Broker to meet margin requirements and for trading purposes. Interest income is recognized on an accrual basis when earned. Premiums and discounts are amortized or accreted over the life of the United States Treasury Obligations. Included in the United States Treasury Obligations as of December 31, 2011 and 2010 were holdings of $425,657,099 and $330,490,820, respectively, which were restricted and held against initial margin of the open futures contracts.

Cash Held By Broker

(f) Cash Held by Broker

The Fund's arrangement with the Commodity Broker requires the Fund to meet its variation margin requirement related to the price movements, both positive and negative, on futures contracts held by the Fund by keeping cash on deposit with the Commodity Broker. The Fund defines cash and cash equivalents held by the Commodity Broker to be highly liquid investments with original maturities of three months or less, when purchased. As of December 31, 2011, the Fund had cash held with the Commodity Broker of $525,057,810, of which $376,223,544 was on deposit to satisfy the Fund's negative variation margin on open futures contracts. As of December 31, 2010, the Fund had cash held with the Commodity Broker of $57,572,732, of which $5,640,739 was restricted. Restrictions on cash held by broker pertain to the settlement of closed futures contracts traded on the London Metals Exchange. There were no cash equivalents held by the Fund as of December 31, 2011 and 2010.

Income Taxes

(g) Income Taxes

The Fund is classified as a partnership for U.S. federal income tax purposes. Accordingly, the Fund will not incur U.S. federal income taxes. No provision for federal, state, and local income taxes has been made in the accompanying financial statements, as investors are individually liable for income taxes, if any, on their allocable share of the Fund's income, gain, loss, deductions and other items.

The major tax jurisdiction for the Fund and the earliest tax year subject to examination: United States 2008.

Futures Contracts

(h) Futures Contracts

All commodity futures contracts are held and used for trading purposes. The commodity futures are recorded on a trade date basis and open contracts are recorded in the statement of financial condition at fair value on the last business day of the period, which represents market value for those commodity futures for which market quotes are readily available. However, when market closing prices are not available, the Managing Owner may value an asset of the Fund pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards. Realized gains (losses) and changes in unrealized appreciation (depreciation) on open positions are determined on a specific identification basis and recognized in the statement of income and expenses in the period in which the contract is closed or the changes occur, respectively. As of December 31, 2011 and 2010, the futures contracts held by the Fund were in a net unrealized depreciation position of $376,223,544 and a net unrealized appreciation position of $563,328,004, respectively.

Management Fee

(i) Management Fee

The Fund pays the Managing Owner a management fee (the "Management Fee"), monthly in arrears, in an amount equal to 0.85% per annum of the daily net asset value of the Fund. The Management Fee is paid in consideration of the Managing Owner's commodity futures trading advisory services. The Management Fee payable by the Fund was increased to 0.85% from 0.75% per annum of the daily net asset value of the Fund, effective January 4, 2010.

Brokerage Commissions And Fees

(j) Brokerage Commissions and Fees

The Fund incurs all brokerage commissions, including applicable exchange fees, NFA fees, give-up fees, pit brokerage fees and other transaction related fees and expenses charged in connection with trading activities by the Commodity Broker. These costs are recorded as brokerage commissions and fees in the statement of income and expenses as incurred. The Commodity Broker's brokerage commissions and trading fees are determined on a contract-by-contract basis. On average, total charges paid to the Commodity Broker were less than $10.00 per round-turn trade for the Years Ended December 31, 2011, 2010 and 2009.

Routine Operational, Administrative And Other Ordinary Expenses

(k) Routine Operational, Administrative and Other Ordinary Expenses

The Managing Owner assumes all routine operational, administrative and other ordinary expenses of the Fund, including, but not limited to, computer services, the fees and expenses of the Trustee, legal and accounting fees and expenses, tax preparation expenses, filing fees and printing, mailing and duplication costs. Accordingly, all such expenses are not reflected in the statement of income and expenses of the Fund.

Organizational And Offering Costs

(l) Organizational and Offering Costs

All organizational and offering expenses of the Fund are incurred and assumed by the Managing Owner. The Fund is not responsible to the Managing Owner for the reimbursement of organizational and offering costs. Expenses incurred in connection with the continuous offering of Shares also will be paid by the Managing Owner.

Non-Recurring And Unusual Fees And Expenses

(m) Non-Recurring and Unusual Fees and Expenses

The Fund pays all fees and expenses which are non-recurring and unusual in nature. Such expenses include legal claims and liabilities, litigation costs or indemnification or other unanticipated expenses. Such fees and expenses, by their nature, are unpredictable in terms of timing and amount. For the Years Ended December 31, 2011, 2010 and 2009, the Fund did not incur such expenses.

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Share Purchases And Redemptions (Tables)

12 Months Ended

Dec. 31, 2011

Share Purchases And Redemptions [Abstract]

Summary Of Share Transactions

	Shares	Paid in Capital			Shares			Paid in Capital			Shares			Paid in Capital
	Year Ended	Year Ended			Year Ended			Year Ended			Year Ended			Year Ended
	December 31,	December 31,			December 31,			December 31,			December 31,			December 31,
	2011	2011			2010			2010			2009			2009
Shares Sold	58,800,000	$	1,714,838,522			45,600,000		$	1,086,574,324			130,000,000		$	2,882,078,200
Shares Redeemed	(40,200,000)		(1,121,135,254	)		(38,400,000	)		(875,040,222	)		(8,000,000	)		(174,460,744	)
Net Increase	18,600,000	$	593,703,268			7,200,000		$	211,534,102			122,000,000		$	2,707,617,456

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Schedule Of Investments (Futures Contracts) (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Schedule of Investments [Line Items]
Securities unrealized gains	$ 41,350,976	$ 568,006,558
Securities unrealized losses	$ 417,574,520	$ 4,678,554
Aluminum (3,355 Contracts, Settlement Date September 19, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		3,355
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Sep. 19, 2011
Brent Crude (6,913 Contracts, Settlement Date January 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		6,913
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Jan. 14, 2011
Copper (955 Contracts, Settlement Date March 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		955
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Mar. 14, 2011
Corn (3,270 Contracts, Settlement Date March 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		3,270
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Mar. 14, 2011
Corn (6,407 Contracts, Settlement Date December 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		6,407
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Dec. 14, 2011
Gasoline (6,485 Contracts, Settlement Date November 30, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		6,485
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Nov. 30, 2011
Light Sweet Crude Oil (6,824 Contracts, Settlement Date June 21, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		6,824
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Jun. 21, 2011
Gold (2,810 Contracts, Settlement Date August 29, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		2,810
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Aug. 29, 2011
Heating Oil (6,032 Contracts, Settlement Date May 31, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		6,032
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		May 31, 2011
Natural Gas (6,081 Contracts, Settlement Date September 28, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		6,081
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Sep. 28, 2011
Red Wheat (2,481 Contracts, Settlement Date July 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		2,481
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Jul. 14, 2011
Silver (717 Contracts, Settlement Date December 28, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		717
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Dec. 28, 2011
Soybeans (3,084 Contracts, Settlement Date November 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		3,084
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Nov. 14, 2011
Soybeans (1,501 Contracts, Settlement Date January 13, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		1,501
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Jan. 13, 2012
Sugar (9,488 Contracts, Settlement Date June 30, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		9,488
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Jun. 30, 2011
Wheat (3,218 Contracts, Settlement Date July 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		3,218
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Jul. 14, 2011
Wheat (965 Contracts, Settlement Date December 14, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		965
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		Dec. 14, 2011
Zinc (3,299 Contracts, Settlement Date May 16, 2011) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts		3,299
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates		May 16, 2011
Aluminum (4,467 Contracts, Settlement Date September 17, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	4,467
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Sep. 17, 2012
Brent Crude (6,473 Contracts, Settlement Date February 14, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	6,473
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Feb. 14, 2012
Copper (1,256 Contracts, Settlement Date March 19, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	1,256
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Mar. 19, 2012
Corn (3,323 Contracts, Settlement Date March 14, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	3,323
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Mar. 14, 2012
Corn (7,105 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	7,105
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Dec. 14, 2012
Gold (2,611 Contracts, Settlement Date February 27, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	2,611
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Feb. 27, 2012
Heating Oil (5,738 Contracts, Settlement Date May 31, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	5,738
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	May 31, 2012
Natural Gas (8,045 Contracts, Settlement Date September 26, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	8,045
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Sep. 26, 2012
RBOB Gasoline (6,652 Contracts, Settlement Date November 30, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	6,652
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Nov. 30, 2012
Red Wheat (3,574 Contracts, Settlement Date July 13, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	3,574
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Jul. 13, 2012
Red Wheat (399 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	399
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Dec. 14, 2012
Silver (666 Contracts, Settlement Date December 27, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	666
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Dec. 27, 2012
Soybeans (3,420 Contracts, Settlement Date November 14, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	3,420
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Nov. 14, 2012
Soybeans (1,967 Contracts, Settlement Date January 14, 2013) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	1,967
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Jan. 14, 2013
Sugar (11,967 Contracts, Settlement Date June 29, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	11,967
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Jun. 29, 2012
Wheat (3,448 Contracts, Settlement Date July 13, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	3,448
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Jul. 13, 2012
Wheat (1,034 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	1,034
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Dec. 14, 2012
WTI Crude (7,568 Contracts, Settlement Date June 20, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	7,568
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Jun. 20, 2012
Zinc (4,819 Contracts, Settlement Date July 16, 2012) [Member]
Schedule of Investments [Line Items]
Open Option Contracts Written, Number of Contracts	4,819
Forward Contract Indexed to Issuer's Equity, Settlement Date or Dates	Jul. 16, 2012

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Statements Of Financial Condition (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Statements Of Financial Condition [Abstract]
United States Treasury Obligations, cost	$ 5,311,724,492	$ 4,489,205,023
Cash held by broker, restricted	$ 0	$ 5,640,739
General shares, issued	40	40
General shares, outstanding	40	40
Shares, issued	203,800,000	185,200,000
Shares, outstanding	203,800,000	185,200,000

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Share Purchases And Redemptions

12 Months Ended

Dec. 31, 2011

Share Purchases And Redemptions [Abstract]

Share Purchases And Redemptions

(7) Share Purchases and Redemptions

(a) Purchases

Shares may be purchased from the Fund only by Authorized Participants in one or more blocks of 200,000 Shares, called a Basket. The Fund issues Shares in Baskets only to Authorized Participants continuously as of noon, New York time, on the business day immediately following the date on which a valid order to create a Basket is accepted by the Fund, at the net asset value of 200,000 Shares as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Fund's assets are traded, whichever is later, on the date that a valid order to create a Basket is accepted by the Fund.

(b) Redemptions

On any business day, an Authorized Participant may place an order with the Managing Owner to redeem one or more Baskets. Redemption orders must be placed by 10:00 a.m., New York time. The day on which the Managing Owner receives a valid redemption order is the redemption order date. Redemption orders are irrevocable. The redemption procedures allow Authorized Participants to redeem Baskets. Individual shareholders may not redeem directly from the Fund.

By placing a redemption order, an Authorized Participant agrees to deliver the Baskets to be redeemed through The Depository Trust Company's (the "DTC") book-entry system to the Fund not later than noon, New York time, on the business day immediately following the redemption order date. By placing a redemption order, and prior to receipt of the redemption proceeds, an Authorized Participant's DTC account is charged the non-refundable transaction fee due for the redemption order.

The redemption proceeds from the Fund consist of the cash redemption amount. The cash redemption amount is equal to the net asset value of the number of Basket(s) requested in the Authorized Participant's redemption order as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Fund's assets are traded, whichever is later, on the redemption order date. The Fund will distribute the cash redemption amount at noon, New York time, on the business day immediately following the redemption order date through DTC to the account of the Authorized Participant as recorded on DTC's book-entry system.

The redemption proceeds due from the Fund are delivered to the Authorized Participant at noon, New York time, on the business day immediately following the redemption order date if, by such time on such business day immediately following the redemption order date, the Fund's DTC account has been credited with the Baskets to be redeemed. If the Fund's DTC account has not been credited with all of the Baskets to be redeemed by such time, the redemption proceeds are delivered to the extent of whole Baskets received. Any remainder of the redemption proceeds are delivered on the next business day to the extent of remaining whole Baskets received if the Managing Owner receives the fee applicable to the extension of the redemption distribution date which the Managing Owner may, from time-to-time, determine and the remaining Baskets to be redeemed are credited to the Fund's DTC account by noon, New York time, on such next business day. Any further outstanding amount of the redemption order will be canceled. The Managing Owner is also authorized to deliver the redemption proceeds notwithstanding that the Baskets to be redeemed are not credited to the Fund's DTC account by noon, New York time, on the business day immediately following the redemption order date if the Authorized Participant has collateralized its obligation to deliver the Baskets through DTC's book-entry system on such terms as the Managing Owner may from time-to-time agree upon.

(c) Share Transactions

	Shares	Paid in Capital			Shares			Paid in Capital			Shares			Paid in Capital
	Year Ended	Year Ended			Year Ended			Year Ended			Year Ended			Year Ended
	December 31,	December 31,			December 31,			December 31,			December 31,			December 31,
	2011	2011			2010			2010			2009			2009
Shares Sold	58,800,000	$	1,714,838,522			45,600,000		$	1,086,574,324			130,000,000		$	2,882,078,200
Shares Redeemed	(40,200,000)		(1,121,135,254	)		(38,400,000	)		(875,040,222	)		(8,000,000	)		(174,460,744	)
Net Increase	18,600,000	$	593,703,268			7,200,000		$	211,534,102			122,000,000		$	2,707,617,456

XML

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2011	Feb. 17, 2012	Jun. 30, 2011
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Entity Registrant Name	PowerShares DB Commodity Index Tracking Fund
Entity Central Index Key	0001328237
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		216,400,000
Entity Public Float			$ 5,988,928,000
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No

XML

Profit And Loss Allocations And Distributions

12 Months Ended

Dec. 31, 2011

Profit And Loss Allocations And Distributions [Abstract]

Profit And Loss Allocations and Distributions

(8) Profit and Loss Allocations and Distributions

Pursuant to the Trust Agreement, income and expenses are allocated pro rata to the Managing Owner as holder of the General Shares and to the Shareholders monthly based on their respective percentage interests as of the close of the last trading day of the preceding month. Any losses allocated to the Managing Owner (as the owner of the General Shares) which are in excess of the Managing Owner's capital balance are allocated to the Shareholders in accordance with their respective interest in the Fund as a percentage of total shareholders' equity. Distributions (other than redemption of units) may be made at the sole discretion of the Managing Owner on a pro rata basis in accordance with the respective capital balances of the shareholders.

No distributions were paid for the Years Ended December 31, 2011, 2010 or 2009.

XML

Schedule Of Investments (Treasury Bills) (USD $)	Dec. 31, 2011	Dec. 31, 2010
U.S. Treasury Bills, 0.08% Due January 6, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		17.10%
Fair Value		$ 872,998,254
Face Value		873,000,000
U.S. Treasury Bills, 0.085% Due January 13, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		4.03%
Fair Value		205,498,150
Face Value		205,500,000
U.S. Treasury Bills, 0.07% Due January 20, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		3.56%
Fair Value		181,996,360
Face Value		182,000,000
U.S. Treasury Bills, 0.065% Due January 27, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		15.55%
Fair Value		794,270,611
Face Value		794,300,000
U.S. Treasury Bills, 0.125% Due February 3, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		13.45%
Fair Value		686,948,475
Face Value		687,000,000
U.S. Treasury Bills, 0.125% Due February 10, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		9.77%
Fair Value		498,951,597
Face Value		499,000,000
U.S. Treasury Bills, 0.13% Due February 17, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		2.10%
Fair Value		106,985,234
Face Value		107,000,000
U.S. Treasury Bills, 0.12% Due February 24, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		3.70%
Fair Value		188,969,382
Face Value		189,000,000
U.S. Treasury Bills, 0.175% Due March 3, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		3.78%
Fair Value		192,961,400
Face Value		193,000,000
U.S. Treasury Bills, 0.145% Due March 10, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		2.35%
Fair Value		119,973,600
Face Value		120,000,000
U.S. Treasury Bills, 0.14% Due March 17, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		6.34%
Fair Value		323,927,748
Face Value		324,000,000
U.S. Treasury Bills, 0.13% Due March 24, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		2.13%
Fair Value		108,972,096
Face Value		109,000,000
U.S. Treasury Bills, 0.18% Due March 31, 2011 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets		4.05%
Fair Value		206,937,486
Face Value		207,000,000
Total United States Treasury Obligations
Schedule of Investments [Line Items]
Percentage of Net Assets	97.15%	87.91%
Fair Value	5,311,719,979	4,489,390,393
U.S. Treasury Bills, 0.015% Due January 5, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	24.91%
Fair Value	1,361,998,638
Face Value	1,362,000,000
U.S. Treasury Bills, 0.01% Due January 12, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	2.68%
Fair Value	146,499,560
Face Value	146,500,000
U.S. Treasury Bills, 0.025% Due January 19, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	4.75%
Fair Value	259,998,700
Face Value	260,000,000
U.S. Treasury Bills, 0.015% Due January 26, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	15.81%
Fair Value	864,293,950
Face Value	864,300,000
U.S. Treasury Bills, 0.01% Due February 2, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	9.79%
Fair Value	534,995,185
Face Value	535,000,000
U.S. Treasury Bills, 0.01% due February 16, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	3.95%
Fair Value	215,997,408
Face Value	216,000,000
U.S. Treasury Bills, 0.015% Due February 23, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	4.94%
Fair Value	269,995,140
Face Value	270,000,000
U.S. Treasury Bills, 0.03% Due March 1, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	5.21%
Fair Value	284,992,875
Face Value	285,000,000
U.S. Treasury Bills, 0.005% Due March 8, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	3.18%
Fair Value	173,994,432
Face Value	174,000,000
U.S. Treasury Bills, 0.01% Due March 15, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	6.80%
Fair Value	371,986,980
Face Value	372,000,000
U.S. Treasury Bills, 0.005% Due March 22, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	3.75%
Fair Value	204,993,235
Face Value	205,000,000
U.S. Treasury Bills, 0.025% Due March 29, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	11.38%
Fair Value	621,973,876
Face Value	$ 622,000,000

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Fund Investment Overview

12 Months Ended

Dec. 31, 2011

Fund Investment Overview [Abstract]

Fund Investment Overview

(2) Fund Investment Overview

The Fund invests with a view to tracking the changes, whether positive or negative, in the level of the DBIQ Diversified Commodity Index Excess Return^TM (the "Index") over time, plus the excess, if any, of the Fund's interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund.

The Index is intended to reflect the change in market value of the commodity sector. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the "Index Commodities"). From May 24, 2006 to October 16, 2009, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ over time, plus the excess, if any, of the Fund's interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The commodities comprising the Deutsche Bank Liquid Commodity Index—Optimum Yield Excess Return™ are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn and Wheat. From October 19, 2009 to December 31, 2010, the Fund invested with a view to tracking changes, whether positive or negative, in the level of the Deutsche Bank Liquid Commodity Index-Optimum Yield Diversified Excess Return™ (the "Interim Index") over time, plus the excess, if any, of the Fund's interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. After December 31, 2010, the Fund commenced tracking DBIQ Optimum Yield Diversified Commodity Index Excess Return™ (the "Index"). The Fund's Interim Index is identical to the Index except with respect to the following non-substantive changes: (i) name of Index, and (ii) inception date of Index for Commodity Futures Trading Commission (the "CFTC") purposes. Except as provided in the immediately preceding sentence, all prior underlying formulae, data (e.g., closing levels, measure of volatility, all other numerical statistics and measures) and all other characteristics (e.g., Base Date, Index Sponsor, rolling, etc.) with respect to the Interim Index is identical to the Index. Please see http://dbfunds.db.com/dbc/weights.aspx with respect to the most recently available weighted composition of the Fund and http://dbfunds.db.com/dbc/index.aspx with respect to the composition of the Index on the Base Date.

The Index is intended to reflect the change in market value of certain commodities. The commodities comprising the Index are Light Sweet Crude Oil, Heating Oil, Aluminum, Gold, Corn, Wheat, Brent Crude, Copper Grade A, Natural Gas, RBOB Gasoline, Silver, Soybeans, Sugar and Zinc (the "Index Commodities"). The Fund also holds United States Treasury Obligations and other high credit quality short-term fixed income securities for deposit with the Fund's commodity broker as margin.

The CFTC and/or commodity exchanges, as applicable, impose position limits on market participants trading in certain commodities included in the Index. The Index is comprised of futures contracts on the Index Commodities that expire in a specific month and trade on a specific exchange (the "Index Contracts"). As disclosed in the Fund's Prospectus, if the Managing Owner determines in its commercially reasonable judgment that it has become impracticable or inefficient for any reason for the Fund to gain full or partial exposure to any Index Commodity by investing in a specific Index Contract, the Fund may invest in a futures contract referencing the particular Index Commodity other than the Index Contract or, in the alternative, invest in other futures contracts not based on the particular Index Commodity if, in the commercially reasonable judgment of the Managing Owner, such futures contracts tend to exhibit trading prices that correlate with such Index Commodity. Because the Fund is approaching or has reached position limits with respect to certain futures contracts comprising the Index, the Fund has commenced investing in other futures contracts based on commodities that comprise the Fund's Index and in futures contracts based on commodities other than commodities that comprise the Fund's Index.

The Fund does not employ leverage. As of December 31, 2011 and 2010, the Fund had $5,460,554,245 (or 99.80%) and $5,110,291,129 (or 100%), respectively, of its holdings of cash, United States Treasury Obligations and unrealized appreciation/depreciation of futures contracts on deposit with its Commodity Broker. Of this, $425,657,099 (or 7.80%) and $330,490,820 (or 6.47%) of the Fund's holdings of cash and United States Treasury Obligations are required to be deposited as margin in support of the Fund's long futures positions as of December 31, 2011 and 2010, respectively. For additional information, please see the audited Schedule of Investments as of December 31, 2011 and 2010 for details of the Fund's portfolio holdings.

DBIQ™, DBLCI™ and Deutsche Bank Liquid Commodity Index™ are trademarks of Deutsche Bank AG London (the "Index Sponsor"). Trademark applications in the United States are pending with respect to the Fund and aspects of the Index. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademarks. Deutsche Bank AG London is an affiliate of the Fund and the Managing Owner.

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Organization

12 Months Ended

Dec. 31, 2011

Organization [Abstract]

Organization

(1) Organization

PowerShares DB Commodity Index Tracking Fund (the "Fund) was formed as a Delaware statutory trust on May 23, 2005. DB Commodity Services LLC, a Delaware Limited Liability Company ("DBCS" or the "Managing Owner"), seeded the Fund with a capital contribution of $1,000 in exchange for 40 General Shares of the Fund. The Fund was originally named "DB Commodity Index Tracking Fund". The Fund changed its name to "PowerShares DB Commodity Index Tracking Fund" effective August 10, 2006. The fiscal year end of the Fund is December 31^st. The term of the Fund is perpetual (unless terminated earlier in certain circumstances) as provided in the Second Amended and Restated Declaration of Trust and Trust Agreement of the Fund (the "Trust Agreement").

The Fund was originally formed as a master-feeder structure. Prior to the close of business on December 31, 2010, the master-feeder structure was collapsed. As a result of the collapse of the master-feeder structure, on December 31, 2010, the Managing Owner's and the Fund's interests in the DB Commodity Master Fund (the "Master Fund") were redeemed for all assets and liabilities held by the Master Fund. Hereafter, all references to the Fund either represent the structure in place as of December 31, 2010 or the structure in place prior to such date whereby the financial statements reflect the consolidation of the Fund and the Master Fund. The collapse of the master-feeder structure had no impact on a Shareholder's net asset value or the results of operations for the Fund.

The Fund offers common units of beneficial interest (the "Shares") only to certain eligible financial institutions (the "Authorized Participants") in one or more blocks of 200,000 Shares, called a Basket. The Fund commenced investment operations on January 31, 2006. The Fund commenced trading on the American Stock Exchange (now known as the NYSE Alternext US LLC (the "NYSE Alternext")) on February 3, 2006 and, as of November 25, 2008, is listed on the NYSE Arca, Inc. (the "NYSE Arca").

This Report covers the years ended December 31, 2011, 2010 and 2009 (herein referred to, as the "Year Ended December 31, 2011", the "Year Ended December 31, 2010" and the "Year Ended December 31, 2009", respectively).

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Assets And Liabilities Measured At Fair Value

	December 31, 2011			December 31, 2010
United States Treasury Obligations (Level 1)	$	5,311,719,979		$	4,489,390,393
Commodity Futures Contracts (Level 1)	$	(376,223,544	)	$	563,328,004

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Commitments And Contingencies

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Commitments And Contingencies

(9) Commitments and Contingencies

The Managing Owner, either in its own capacity or in its capacity as the Managing Owner and on behalf of the Fund, has entered into various service agreements that contain a variety of representations, or provide indemnification provisions related to certain risks service providers undertake in performing services which are in the best interests of the Fund. As of December 31, 2011 and 2010 no claims had been received by the Fund and it was therefore not possible to estimate the Fund's potential future exposure under such indemnification provisions.

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Fair Value Measurements

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Fair Value Measurements

(5) Fair Value Measurements

The Fund's assets and liabilities recorded at fair value have been categorized based upon the fair value hierarchy discussed in Note 4(c).

Assets and Liabilities Measured at Fair Value were as follows:

	December 31, 2011			December 31, 2010
United States Treasury Obligations (Level 1)	$	5,311,719,979		$	4,489,390,393
Commodity Futures Contracts (Level 1)	$	(376,223,544	)	$	563,328,004

There were no Level 2 or Level 3 holdings as of December 31, 2011 and 2010.

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Service Providers And Related Party Agreements

12 Months Ended

Dec. 31, 2011

Service Providers And Related Party Agreements [Abstract]

Service Providers And Related Party Agreements

(3) Service Providers and Related Party Agreements

The Trustee

Under the Trust Agreement, Wilmington Trust Company, the trustee of the Fund (the "Trustee"), has delegated to the Managing Owner the exclusive management and control of all aspects of the business of the Fund. The Trustee will have no duty or liability to supervise or monitor the performance of the Managing Owner, nor will the Trustee have any liability for the acts or omissions of the Managing Owner.

The Managing Owner

The Managing Owner serves the Fund as commodity pool operator, commodity trading advisor, and managing owner, and is an indirect wholly-owned subsidiary of Deutsche Bank AG. During the Year Ended December 31, 2011, the Fund incurred Management Fees of $49,989,842, of which $3,900,692 was payable at December 31, 2011. During the Year Ended December 31, 2010, the Fund incurred Management Fees of $38,197,079, of which $3,507,183 was payable at December 31, 2010. During the Year Ended December 31, 2009, the Fund incurred Management Fees of $20,523,877.

The Commodity Broker

Deutsche Bank Securities Inc., a Delaware corporation, serves as the Fund's clearing broker (the "Commodity Broker"). The Commodity Broker is an indirect wholly-owned subsidiary of Deutsche Bank AG and is an affiliate of the Managing Owner. In its capacity as clearing broker, the Commodity Broker executes and clears each of the Fund's futures transactions and performs certain administrative and custodial services for the Fund. As custodian of the Fund's assets, the Commodity Broker is responsible, among other things, for providing periodic accountings of all dealings and actions taken by the Fund during the reporting period, together with an accounting of all securities, cash or other indebtedness or obligations held by it or its nominees for or on behalf of the Fund. During the Year Ended December 31, 2011, the Fund incurred brokerage fees of $1,129,062, of which $1,860 was payable at December 31, 2011. During the Year Ended December 31, 2010, the Fund incurred brokerage fees of $1,268,413, of which $9,019 was payable at December 31, 2010. During the Year Ended December 31, 2009, the Fund incurred brokerage fees of $1,664,714.

The Administrator

The Bank of New York Mellon (the "Administrator") has been appointed by the Managing Owner as the administrator, custodian and transfer agent of the Fund, and has entered into separate administrative, custodian, transfer agency and service agreements (collectively referred to as the "Administration Agreement").

Pursuant to the Administration Agreement, the Administrator performs or supervises the performance of services necessary for the operation and administration of the Fund (other than making investment decisions), including receiving and processing orders from Authorized Participants to create and redeem Baskets, net asset value calculations, accounting and other fund administrative services. The Administrator retains certain financial books and records, including: Basket creation and redemption books and records, fund accounting records, ledgers with respect to assets, liabilities, capital, income and expenses, the registrar, transfer journals and related details, and trading and related documents received from futures commission merchants.

The Distributor

ALPS Distributors, Inc. (the "Distributor") provides certain distribution services to the Fund. Pursuant to the Distribution Services Agreement among the Managing Owner in its capacity as managing owner of the Fund and the Distributor, the Distributor assists the Managing Owner and the Administrator with certain functions and duties relating to distribution and marketing services to the Fund including reviewing and approving marketing materials.

Invesco PowerShares Capital Management LLC

Under the License Agreement among Invesco PowerShares Capital Management LLC (the "Licensor"), and the Managing Owner in its own capacity and in its capacity as managing owner of the Fund (the Fund and the Managing Owner, collectively, the "Licensees"), the Licensor granted to each Licensee a non-exclusive license to use the "PowerShares" trademark (the "Trademark") anywhere in the world, solely in connection with the marketing and promotion of the Fund and to use or refer to the Trademark in connection with the issuance and trading of the Fund as necessary.

Invesco Aim Distributors, Inc.

Through a marketing agreement between the Managing Owner and Invesco Aim Distributors, Inc. ("Invesco Aim Distributors"), an affiliate of Invesco PowerShares Capital Management LLC ("Invesco PowerShares"), the Managing Owner, on behalf of the Fund, has appointed Invesco Aim Distributors as a marketing agent. Invesco Aim Distributors assists the Managing Owner and the Administrator with certain functions and duties such as providing various educational and marketing activities regarding the Fund, primarily in the secondary trading market, which activities include, but are not limited to, communicating the Fund's name, characteristics, uses, benefits, and risks, consistent with the prospectus. Invesco Aim Distributors will not open or maintain customer accounts or handle orders for the Fund. Invesco Aim Distributors engages in public seminars, road shows, conferences, media interviews, and distributes sales literature and other communications (including electronic media) regarding the Fund.

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Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Summary Of Significant Accounting Policies

(4) Summary of Significant Accounting Policies

(a) Basis of Presentation

The financial statements of the Fund have been prepared using U.S. generally accepted accounting principles and include the financial statements of the Fund and the Master Fund when applicable. As described in note 1, the Fund was originally formed as a master-feeder structure and such structure was collapsed on December 31, 2010. The financial statements reflect consolidation of the Fund and the Master Fund for 2009. Upon the initial offering of the Shares on January 31, 2006, the capital raised by the Fund was used to purchase 100% of the common units of beneficial interest of the Master Fund (the "Master Fund Limited Units") (excluding common units of beneficial interest of the Master Fund held by the Managing Owner (the "Master Fund General Units")). The Master Fund Limited Units owned by the Fund provided the Fund and its investors certain controlling rights and abilities over the Master Fund. Consequently, the financial statement balances of the Master Fund were consolidated with the Fund's financial statement balances for the period previously described and all significant inter-company balances and transactions were eliminated.

(b) Use of Estimates

The preparation of the financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses and related disclosure of contingent assets and liabilities during the reporting period of the financial statements and accompanying notes. Actual results could differ from those estimates.

(c) Financial Instruments and Fair Value

United States Treasury Obligations and commodity futures contracts are recorded in the statements of financial condition on a trade date basis at fair value with changes in fair value recognized in earnings in each period. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price).

Financial Accounting Standards Board (FASB) fair value measurement and disclosure guidance requires a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:

Basis of Fair Value Measurement

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2: Quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly;

Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.

A financial instrument's level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

In determining fair value of United States Treasury Obligations and commodity futures contracts, the Fund uses unadjusted quoted market prices in active markets. United States Treasury Obligations and commodity futures contracts are classified within Level 1 of the fair value hierarchy. The Fund does not adjust the quoted prices for United States Treasury Obligations and commodity futures contracts.

(d) Deposits with Broker

The Fund deposits cash and United States Treasury Obligations with its Commodity Broker subject to CFTC regulations and various exchange and broker requirements. The combination of the Fund's deposits with its Commodity Broker of cash and United States Treasury Obligations and the unrealized profit or loss on open futures contracts (variation margin) represents the Fund's overall equity in its broker trading account. To meet the Fund's initial margin requirements, the Fund holds United States Treasury Obligations. The Fund uses its cash held by the Commodity Broker to satisfy variation margin requirements. The Fund earns interest on its cash deposited with the Commodity Broker.

(e) United States Treasury Obligations

The Fund records purchases and sales of United States Treasury Obligations on a trade date basis. These holdings are marked to market based on quoted market closing prices. The Fund holds United States Treasury Obligations for deposit with the Fund's Commodity Broker to meet margin requirements and for trading purposes. Interest income is recognized on an accrual basis when earned. Premiums and discounts are amortized or accreted over the life of the United States Treasury Obligations. Included in the United States Treasury Obligations as of December 31, 2011 and 2010 were holdings of $425,657,099 and $330,490,820, respectively, which were restricted and held against initial margin of the open futures contracts.

(f) Cash Held by Broker

The Fund's arrangement with the Commodity Broker requires the Fund to meet its variation margin requirement related to the price movements, both positive and negative, on futures contracts held by the Fund by keeping cash on deposit with the Commodity Broker. The Fund defines cash and cash equivalents held by the Commodity Broker to be highly liquid investments with original maturities of three months or less, when purchased. As of December 31, 2011, the Fund had cash held with the Commodity Broker of $525,057,810, of which $376,223,544 was on deposit to satisfy the Fund's negative variation margin on open futures contracts. As of December 31, 2010, the Fund had cash held with the Commodity Broker of $57,572,732, of which $5,640,739 was restricted. Restrictions on cash held by broker pertain to the settlement of closed futures contracts traded on the London Metals Exchange. There were no cash equivalents held by the Fund as of December 31, 2011 and 2010.

(g) Income Taxes

The Fund is classified as a partnership for U.S. federal income tax purposes. Accordingly, the Fund will not incur U.S. federal income taxes. No provision for federal, state, and local income taxes has been made in the accompanying financial statements, as investors are individually liable for income taxes, if any, on their allocable share of the Fund's income, gain, loss, deductions and other items.

The major tax jurisdiction for the Fund and the earliest tax year subject to examination: United States 2008.

(h) Futures Contracts

All commodity futures contracts are held and used for trading purposes. The commodity futures are recorded on a trade date basis and open contracts are recorded in the statement of financial condition at fair value on the last business day of the period, which represents market value for those commodity futures for which market quotes are readily available. However, when market closing prices are not available, the Managing Owner may value an asset of the Fund pursuant to policies the Managing Owner has adopted, which are consistent with normal industry standards. Realized gains (losses) and changes in unrealized appreciation (depreciation) on open positions are determined on a specific identification basis and recognized in the statement of income and expenses in the period in which the contract is closed or the changes occur, respectively. As of December 31, 2011 and 2010, the futures contracts held by the Fund were in a net unrealized depreciation position of $376,223,544 and a net unrealized appreciation position of $563,328,004, respectively.

(i) Management Fee

The Fund pays the Managing Owner a management fee (the "Management Fee"), monthly in arrears, in an amount equal to 0.85% per annum of the daily net asset value of the Fund. The Management Fee is paid in consideration of the Managing Owner's commodity futures trading advisory services. The Management Fee payable by the Fund was increased to 0.85% from 0.75% per annum of the daily net asset value of the Fund, effective January 4, 2010.

(j) Brokerage Commissions and Fees

The Fund incurs all brokerage commissions, including applicable exchange fees, NFA fees, give-up fees, pit brokerage fees and other transaction related fees and expenses charged in connection with trading activities by the Commodity Broker. These costs are recorded as brokerage commissions and fees in the statement of income and expenses as incurred. The Commodity Broker's brokerage commissions and trading fees are determined on a contract-by-contract basis. On average, total charges paid to the Commodity Broker were less than $10.00 per round-turn trade for the Years Ended December 31, 2011, 2010 and 2009.

(k) Routine Operational, Administrative and Other Ordinary Expenses

The Managing Owner assumes all routine operational, administrative and other ordinary expenses of the Fund, including, but not limited to, computer services, the fees and expenses of the Trustee, legal and accounting fees and expenses, tax preparation expenses, filing fees and printing, mailing and duplication costs. Accordingly, all such expenses are not reflected in the statement of income and expenses of the Fund.

(l) Organizational and Offering Costs

All organizational and offering expenses of the Fund are incurred and assumed by the Managing Owner. The Fund is not responsible to the Managing Owner for the reimbursement of organizational and offering costs. Expenses incurred in connection with the continuous offering of Shares also will be paid by the Managing Owner.

(m) Non-Recurring and Unusual Fees and Expenses

The Fund pays all fees and expenses which are non-recurring and unusual in nature. Such expenses include legal claims and liabilities, litigation costs or indemnification or other unanticipated expenses. Such fees and expenses, by their nature, are unpredictable in terms of timing and amount. For the Years Ended December 31, 2011, 2010 and 2009, the Fund did not incur such expenses.

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Financial Instrument Risk

12 Months Ended

Dec. 31, 2011

Financial Instrument Risk [Abstract]

Financial Instrument Risk

(6) Financial Instrument Risk

In the normal course of its business, the Fund is a party to financial instruments with off-balance sheet risk. The term "off-balance sheet risk" refers to an unrecorded potential liability that, even though it does not appear on the balance sheet, may result in a future obligation or loss. The financial instruments used by the Fund are commodity futures, whose values are based upon an underlying asset and generally represent future commitments that have a reasonable possibility of being settled in cash or through physical delivery. The financial instruments are traded on an exchange and are standardized contracts.

Market risk is the potential for changes in the value of the financial instruments traded by the Fund due to market changes, including fluctuations in commodity prices. In entering into these futures contracts, there exists a market risk that such futures contracts may be significantly influenced by adverse market conditions, resulting in such futures contracts being less valuable. If the markets should move against all of the futures contracts at the same time, the Fund could experience substantial losses.

Credit risk is the possibility that a loss may occur due to the failure of an exchange clearinghouse to perform according to the terms of a futures contract. Credit risk with respect to exchange-traded instruments is reduced to the extent that an exchange or clearing organization acts as a counterparty to the transactions. The Fund's risk of loss in the event of counterparty default is typically limited to the amounts recognized in the statement of financial condition and not represented by the futures contract or notional amounts of the instruments.

The Fund has not utilized, nor does it expect to utilize in the future, special purpose entities to facilitate off-balance sheet financing arrangements and has no loan guarantee arrangements or off-balance sheet arrangements of any kind, other than agreements entered into in the normal course of business noted above.

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Subsequent Events

12 Months Ended

Dec. 31, 2011

Subsequent Events [Abstract]

Subsequent Events

(11) Subsequent Events

The Fund evaluated the need for disclosures and/or adjustments resulting from subsequent events through the date the financial statements were issued. This evaluation did not result in any subsequent events that necessitated disclosures and/or adjustments.

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Organization (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	May 23, 2005
Organization [Abstract]
Capital contribution	$ 1,000	$ 1,000	$ 1,000
General shares	26.83	27.58	40
Number of Shares issued per Basket	200,000

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Schedule Of Investments (Treasury Bills) (Parenthetical) (USD $)			12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2010 U.S. Treasury Bills, 0.08% Due January 6, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.085% Due January 13, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.07% Due January 20, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.065% Due January 27, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.125% Due February 3, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.125% Due February 10, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.13% Due February 17, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.12% Due February 24, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.175% Due March 3, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.145% Due March 10, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.14% Due March 17, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.13% Due March 24, 2011 [Member]	Dec. 31, 2010 U.S. Treasury Bills, 0.18% Due March 31, 2011 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.015% Due January 5, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.01% Due January 12, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.025% Due January 19, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.015% Due January 26, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.01% Due February 2, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.01% due February 16, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.015% Due February 23, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.03% Due March 1, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.005% Due March 8, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.01% Due March 15, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.005% Due March 22, 2012 [Member]	Dec. 31, 2011 U.S. Treasury Bills, 0.025% Due March 29, 2012 [Member]
Schedule of Investments [Line Items]
Investment Maturity Date			Jan. 06, 2011	Jan. 13, 2011	Jan. 20, 2011	Jan. 27, 2011	Feb. 03, 2011	Feb. 10, 2011	Feb. 17, 2011	Feb. 24, 2011	Mar. 03, 2011	Mar. 10, 2011	Mar. 17, 2011	Mar. 24, 2011	Mar. 31, 2011	Jan. 05, 2012	Jan. 12, 2012	Jan. 19, 2012	Jan. 26, 2012	Feb. 02, 2012	Feb. 16, 2012	Feb. 23, 2012	Mar. 01, 2012	Mar. 08, 2012	Mar. 15, 2012	Mar. 22, 2012	Mar. 29, 2012
Investment Interest Rate			0.08%	0.085%	0.07%	0.065%	0.125%	0.125%	0.13%	0.12%	0.175%	0.145%	0.14%	0.13%	0.18%	0.015%	0.01%	0.025%	0.015%	0.01%	0.01%	0.015%	0.03%	0.005%	0.01%	0.005%	0.025%
Cost, United States Treasury Obligations	$ 5,311,724,492	$ 4,489,205,023

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Statements Of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net Income (Loss)	$ (233,096,626)	$ 507,288,483	$ 481,090,052
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Cost of securities purchased	(23,183,942,035)	(16,965,659,067)	(11,955,501,698)
Proceeds from securities sold and matured	22,365,188,660	16,390,107,464	8,225,164,456
Net accretion of discount on United States Treasury Obligations	(3,696,794)	(5,110,637)	(3,435,572)
Net realized (gain) loss on United States Treasury Obligations	(69,300)	982	13,235
Net change in unrealized (gain) loss on United States Treasury Obligations and futures	939,741,431	(342,110,745)	(910,178,630)
(Increase) decrease in restricted cash	5,640,739	12,784,100	(18,424,838)
Change in operating receivables and liabilities:
Other assets	1,000
Payable to broker		(298,202)	298,202
Management fee payable	393,509	821,590	1,995,612
Brokerage fee payable	(7,159)	(6,981)	90
Net cash provided by (used for) operating activities	(109,846,575)	(402,183,013)	(4,178,979,091)
Cash flows from financing activities:
Proceeds from sale of Shares	1,714,838,522	1,086,574,324	2,882,078,200
Receivable for Shares issued	(10,730,876)
Redemption of Shares	(1,121,135,254)	(875,040,222)	(174,460,744)
Redemption of non-controlling interest		(1,103)
Net cash provided by (used for) financing activities	582,972,392	211,532,999	2,707,617,456
Net change in cash held by broker	473,125,817	(190,650,014)	(1,471,361,635)
Unrestricted Cash held by broker at beginning of period	51,931,993	242,582,007	1,713,943,642
Unrestricted Cash held by broker at end of period	$ 525,057,810	$ 51,931,993	$ 242,582,007

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Fund Investment Overview (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Fund Investment Overview [Abstract]
Deposits with broker	$ 5,460,554,245	$ 5,110,291,129
Percentage of assets held by broker	99.80%	100.00%
Restricted investments	$ 425,657,099	$ 330,490,820
Percentage of holdings considered restricted	7.80%	6.47%

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Net Asset Value And Financial Highlights

12 Months Ended

Dec. 31, 2011

Net Asset Value And Financial Highlights [Abstract]

Net Asset Value And Financial Highlights

(10) Net Asset Value and Financial Highlights

The Fund is presenting the following net asset value and financial highlights related to investment performance for a Share outstanding for the Years Ended December 31, 2011, 2010 and 2009. The net investment income and total expense ratios are calculated using average net asset value. The net asset value presentation is calculated using daily Shares outstanding. The total return is based on the change in net asset value of the Shares during the period. An individual investor's return and ratios may vary based on the timing of capital transactions.

Net asset value per Share is the net asset value of the Fund divided by the number of outstanding Shares.

	Year Ended
	December 31, 2011			December 31, 2010			December 31, 2009
Net Asset Value
Net asset value per share, beginning of period	$	27.57		$	24.65		$	21.42
Net realized and change in unrealized gain (loss) on United States Treasury Obligations and Futures		(0.51	)		3.10			3.38
Net investment income (loss)		(0.23	)		(0.18	)		(0.15	)
Net income (loss)		(0.74	)		2.92			3.23
Distributions of net investment income on Shares		—			—			—
Net increase (decrease)		(0.74	)		2.92			3.23
Net asset value per Share, end of period	$	26.83		$	27.57		$	24.65
Market value per Share, beginning of period	$	27.55		$	24.62		$	21.19
Market value per Share, end of period	$	26.84		$	27.55		$	24.62
Ratio to average Net Assets
Net investment income (loss)		(0.81	)%		(0.76	)%		(0.68	)%
Total expenses		0.87	%		0.88	%		0.81	%
Total Return, at net asset value		(2.68	)%		11.85	%		15.08	%
Total Return, at market value		(2.58	)%		11.90	%		16.19	%