10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2012

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

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  þ    No  ¨

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, an 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  þ    No  ¨

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  þ

Indicate the number of outstanding Shares as of September 30, 2012: 233,400,000 Shares.

POWERSHARES DB COMMODITY INDEX TRACKING FUND

QUARTER ENDED SEPTEMBER 30, 2012

TABLE OF CONTENTS

		Page
PART I.	FINANCIAL INFORMATION		1
ITEM 1.	FINANCIAL STATEMENTS		1
	Notes to Unaudited Financial Statements		10
ITEM 2.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS		17
ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK		29
ITEM 4.	CONTROLS AND PROCEDURES		32
PART II.	OTHER INFORMATION		33
Item 1.	Legal Proceedings		33
Item 1A.	Risk Factors		33
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		33
Item 3.	Defaults Upon Senior Securities		33
Item 4.	Mine Safety Disclosure		33
Item 5.	Other Information		33
Item 6.	Exhibits		35
SIGNATURES			36

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS.

PowerShares DB Commodity Index Tracking Fund

Statements of Financial Condition

September 30, 2012 (unaudited) and December 31, 2011

	September 30, 2012		December 31, 2011
Assets
Equity in broker trading accounts:
United States Treasury Obligations, at fair value (cost $5,786,204,357 and $5,311,724,492 respectively)	$	5,786,356,514	$	5,311,719,979
Cash held by broker		424,045,865		542,289,641
Net unrealized appreciation (depreciation) on futures contracts		491,359,456		(376,223,544	)
Deposits with broker		6,701,761,835		5,477,786,076
Receivable for LME Contracts		14,688,448		—
Receivable for shares issued		—		10,730,876
Total assets	$	6,716,450,283	$	5,488,516,952
Liabilities
Payable for LME Contracts		—		17,231,831
Management fee payable	$	9,102,007	$	3,900,692
Brokerage fee payable		430		1,860
Total liabilities		9,102,437		21,134,383
Commitments and Contingencies (Note 9)
Equity
Shareholders’ equity
General shares:
Paid in capital—40 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		1,000		1,000
Accumulated earnings (deficit)		150		73
Total General shares		1,150		1,073
Shares:
Paid in capital—233,400,000 and 203,800,000 redeemable Shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		5,729,954,564		4,872,481,564
Accumulated earnings (deficit)		977,392,132		594,899,932
Total Shares		6,707,346,696		5,467,381,496
Total shareholders’ equity		6,707,347,846		5,467,382,569
Total liabilities and equity	$	6,716,450,283	$	5,488,516,952
Net asset value per share
General shares	$	28.75	$	26.83
Shares	$	28.74	$	26.83

See accompanying notes to unaudited financial statements.

1

PowerShares DB Commodity Index Tracking Fund

Unaudited Schedule of Investments

September 30, 2012

Description	Percentage of Net Assets			Fair Value		Face Value
United States Treasury Obligations
U.S. Treasury Bills, 0.105% due October 4, 2012		21.77	%	$	1,459,994,160	$	1,460,000,000
U.S. Treasury Bills, 0.09% due October 11, 2012		1.97			132,498,278		132,500,000
U.S. Treasury Bills, 0.08% due October 18, 2012		4.13			276,991,690		277,000,000
U.S. Treasury Bills, 0.055% due October 25, 2012		12.11			812,269,945		812,300,000
U.S. Treasury Bills, 0.1% due November 1, 2012		8.54			572,973,069		573,000,000
U.S. Treasury Bills, 0.1% due November 8, 2012		1.64			109,991,860		110,000,000
U.S. Treasury Bills, 0.11% due November 15, 2012		1.67			111,990,256		112,000,000
U.S. Treasury Bills, 0.105% due November 23, 2012		4.70			314,966,295		315,000,000
U.S. Treasury Bills, 0.105% due November 29, 2012		5.28			353,965,308		354,000,000
U.S. Treasury Bills, 0.1% due December 6, 2012		6.57			440,939,583		441,000,000
U.S. Treasury Bills, 0.1% due December 13, 2012		7.69			515,916,408		516,000,000
U.S. Treasury Bills, 0.105% due December 20, 2012		4.04			270,951,762		271,000,000
U.S. Treasury Bills, 0.11% due December 27, 2012		6.16			412,907,900		413,000,000
Total United States Treasury Obligations (cost $5,786,204,357)		86.27	%	$	5,786,356,514

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 (4,845 contracts, settlement date October 14, 2013)		0.14	%	$	9,276,501
Brent Crude (7,730 contracts, settlement date November 15, 2012)		(0.19	)		(12,996,080	)
Copper (1,432 contracts, settlement date March 18, 2013)		(0.12	)		(8,202,600	)
Corn (12,335 contracts, settlement date December 14, 2012)		1.37			91,546,750
Gold (2,967 contracts, settlement date December 27, 2012)		0.58			39,130,620
Heating Oil (6,525 contracts, settlement date March 28, 2013)		0.04			2,417,957
Natural Gas (7,355 contracts, settlement date September 26, 2013)		0.40			26,902,130
RBOB Gasoline (7,619 contracts, settlement date November 30, 2012)		1.15			77,242,754
Red Wheat (424 contracts, settlement date July 12, 2013)		0.00			219,800
Silver (763 contracts, settlement date December 27, 2012)		0.04			2,959,225
Soybeans (4,873 contracts, settlement date November 14, 2012)		1.27			85,234,013
Soybeans (1,318 contracts, settlement date January 14, 2013)		0.42			28,277,413
Sugar (12,823 contracts, settlement date June 28, 2013)		(0.08	)		(5,589,528	)
Wheat (827 contracts, settlement date December 14, 2012)		0.10			6,499,288
Wheat (7,976 contracts, settlement date July 12, 2013)		0.88			59,107,675
WTI Crude NYMEX (8,442 contracts, settlement date June 20, 2013)		0.85			56,892,240
Zinc (5,463 contracts, settlement date December 17, 2012)		0.48			32,441,298
Net Unrealized Appreciation on Futures Contracts		7.33	%	$	491,359,456

Net unrealized appreciation is comprised of unrealized gains of $536,116,936 and unrealized losses of $44,757,480.

See accompanying notes to unaudited financial statements.

2

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 unaudited financial statements.

3

PowerShares DB Commodity Index Tracking Fund

Unaudited Statements of Income and Expenses

For the Three Months Ended September 30, 2012 and 2011 and Nine Months Ended September 30, 2012 and 2011

	Three Months Ended						Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Income
Interest Income	$	1,244,368		$	567,628		$	2,686,045		$	3,416,329
Expenses
Management Fee		13,320,547			13,105,781			38,825,617			38,205,824
Brokerage Commissions and Fees		303,699			3,485			988,074			1,124,873
Total Expenses		13,624,246			13,109,266			39,813,691			39,330,697
Net investment income (loss)		(12,379,878	)		(12,541,638	)		(37,127,646	)		(35,914,368	)
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations and Futures
Net Realized Gain (Loss) on
United States Treasury Obligations		1,156			10,612			16,347			37,252
Futures		(189,683,137	)		31,724,525			(448,136,094	)		661,899,061
Net realized gain (loss)		(189,681,981	)		31,735,137			(448,119,747	)		661,936,313
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations		27,749			(60,700	)		156,670			(67,608	)
Futures		857,601,282			(712,268,722	)		867,583,000			(1,038,388,867	)
Net change in unrealized gain (loss)		857,629,031			(712,329,422	)		867,739,670			(1,038,456,475	)
Net realized and net change in unrealized gain (loss) on United States Treasury Obligations and Futures		667,947,050			(680,594,285	)		419,619,923			(376,520,162	)
Net Income (Loss)	$	655,567,172		$	(693,135,923	)	$	382,492,277		$	(412,434,530	)

See accompanying notes to unaudited financial statements.

4

PowerShares DB Commodity Index Tracking Fund

Unaudited Statement of Changes in Shareholders’ Equity

For the Three Months Ended September 30, 2012

	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 July 1, 2012		40	$	1,000	$	30		$	1,030			215,200,000		$	5,222,664,910		$	321,825,080		$	5,544,489,990		$	5,544,491,020
Sale of Shares												22,400,000			623,655,448						623,655,448			623,655,448
Redemption of Shares												(4,200,000	)		(116,365,794	)					(116,365,794	)		(116,365,794	)
Net Income (Loss)
Net investment income (loss)						(4	)		(4	)								(12,379,874	)		(12,379,874	)		(12,379,878	)
Net realized gain (loss) on United States Treasury Obligations and Futures						(49	)		(49	)								(189,681,932	)		(189,681,932	)		(189,681,981	)
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures						173			173									857,628,858			857,628,858			857,629,031
Net Income (Loss)						120			120									655,567,052			655,567,052			655,567,172
Balance at September 30, 2012		40	$	1,000	$	150		$	1,150			233,400,000		$	5,729,954,564		$	977,392,132		$	6,707,346,696		$	6,707,347,846

See accompanying notes to unaudited financial statements.

5

PowerShares DB Commodity Index Tracking Fund

Unaudited Statement of Changes in Shareholders’ Equity

For the Three Months Ended September 30, 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 July 1, 2011		40	$	1,000	$	166		$	1,166			206,800,000		$	4,920,804,860		$	1,108,697,858		$	6,029,502,718		$	6,029,503,884
Sale of Shares												14,600,000			429,814,372						429,814,372			429,814,372
Redemption of Shares												(11,800,000	)		(333,914,708	)					(333,914,708	)		(333,914,708	)
Net Income (Loss)
Net investment income (loss)						(1	)		(1	)								(12,541,637	)		(12,541,637	)		(12,541,638	)
Net realized gain (loss) on United States Treasury Obligations and Futures						14			14									31,735,123			31,735,123			31,735,137
Net change in unrealized gain (loss) on United States Treasury
Obligations and Futures						(142	)		(142	)								(712,329,280	)		(712,329,280	)		(712,329,422	)
Net Income (Loss)						(129	)		(129	)								(693,135,794	)		(693,135,794	)		(693,135,923	)
Balance at September 30, 2011		40	$	1,000	$	37		$	1,037			209,600,000		$	5,016,704,524		$	415,562,064		$	5,432,266,588		$	5,432,267,625

See accompanying notes to unaudited financial statements.

6

PowerShares DB Commodity Index Tracking Fund

Unaudited Statement of Changes in Shareholders’ Equity

For the Nine Months Ended September 30, 2012

	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, 2012		40	$	1,000	$	73		$	1,073			203,800,000		$	4,872,481,564		$	594,899,932		$	5,467,381,496		$	5,467,382,569
Sale of Shares												53,200,000			1,486,852,502						1,486,852,502			1,486,852,502
Redemption of Shares												(23,600,000	)		(629,379,502	)					(629,379,502	)		(629,379,502	)
Net Income (Loss)
Net investment income (loss)						(8	)		(8	)								(37,127,638	)		(37,127,638	)		(37,127,646	)
Net realized gain (loss) on United States Treasury Obligations and Futures						(90	)		(90	)								(448,119,657	)		(448,119,657	)		(448,119,747	)
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures						175			175									867,739,495			867,739,495			867,739,670
Net Income (Loss)						77			77									382,492,200			382,492,200			382,492,277
Balance at September 30, 2012		40	$	1,000	$	150		$	1,150			233,400,000		$	5,729,954,564		$	977,392,132		$	6,707,346,696		$	6,707,347,846

See accompanying notes to unaudited financial statements.

7

PowerShares DB Commodity Index Tracking Fund

Unaudited Statement of Changes in Shareholders’ Equity

For the Nine Months Ended September 30, 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												49,200,000			1,452,358,698						1,452,358,698			1,452,358,698
Redemption of Shares												(24,800,000	)		(714,432,470	)					(714,432,470	)		(714,432,470	)
Net Income (Loss)
Net investment income (loss)						(6	)		(6	)								(35,914,362	)		(35,914,362	)		(35,914,368	)
Net realized gain (loss) on United States Treasury Obligations and Futures						155			155									661,936,158			661,936,158			661,936,313
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures						(215	)		(215	)								(1,038,456,260	)		(1,038,456,260	)		(1,038,456,475	)
Net Income (Loss)						(66	)		(66	)								(412,434,464	)		(412,434,464	)		(412,434,530	)
Balance at September 30, 2011		40	$	1,000	$	37		$	1,037			209,600,000		$	5,016,704,524		$	415,562,064		$	5,432,266,588		$	5,432,267,625

See accompanying notes to unaudited financial statements.

8

PowerShares DB Commodity Index Tracking Fund

Unaudited Statements of Cash Flows

For the Nine Months Ended September 30, 2012 and 2011

	Nine Months Ended
	September 30, 2012			September 30, 2011
Cash flows from operating activities:
Net Income (Loss)	$	382,492,277		$	(412,434,530	)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Cost of securities purchased		(17,711,121,495	)		(17,564,337,576	)
Proceeds from securities sold and matured		17,239,366,177			16,609,391,466
Net accretion of discount on United States Treasury Obligations		(2,708,200	)		(3,433,895	)
Net realized (gain) loss on United States Treasury Obligations		(16,347	)		(37,252	)
Net change in unrealized (gain) loss on United States Treasury Obligations and futures		(867,739,670	)		1,038,456,475
Change in operating receivables and liabilities:
Management fee payable		5,201,315			683,772
Other assets		—			1,000
Receivable for LME contracts		(14,688,448	)		5,640,738
Payable for LME contracts		(17,231,831	)		4,308,763
Brokerage fee payable		(1,430	)		335,849
Net cash provided by (used for) operating activities		(986,447,652	)		(321,425,190	)
Cash flows from financing activities:
Proceeds from sale of Shares		1,486,852,502			1,452,358,698
Change in Receivable for Shares issued		10,730,876			—
Redemption of Shares		(629,379,502	)		(714,432,470	)
Net cash provided by (used for) financing activities		868,203,876			737,926,228
Net change in cash held by broker		(118,243,776	)		416,501,038
Cash held by broker at beginning of period		542,289,641			51,931,994
Cash held by broker at end of period	$	424,045,865		$	468,433,032

See accompanying notes to unaudited financial statements.

9

PowerShares DB Commodity Index Tracking Fund

Notes to Unaudited Financial Statements

September 30, 2012

(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 31st. 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 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 three months ended September 30, 2012 and 2011 (hereinafter referred to as the “Three Months Ended September 30, 2012” and the “Three Months Ended September 30, 2011”, respectively) and the nine months ended September 30, 2012 and 2011 (hereinafter referred to as the “Nine Months Ended September 30, 2012” and the “Nine Months Ended September 30, 2011”, 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™ (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”).

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 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 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 Fund does not employ leverage. As of September 30, 2012 and December 31, 2011, the Fund had $6,701,764,835 (or 99.78%) and $ 5,477,786,076 (or 99.80%), 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, $392,883,777 (or 5.86%) and $ 425,657,099 (or 7.77%), respectively, 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 September 30, 2012 and December 31, 2011. For additional information, please see the unaudited Schedule of Investments as of September 30, 2012 and the audited Schedule of Investments as of December 31, 2011 for details of the Fund’s portfolio holdings.

DBIQ™ is a trademark 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. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademark. 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.

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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 Three Months Ended September 30, 2012 and 2011, the Fund incurred Management Fees of $13,320,547 and $13,105,781, respectively. Management Fees incurred during the Nine Months Ended September 30, 2012 and 2011 by the Fund were $38,825,617 and $38,205,824, respectively. As of September 30, 2012 and December 31, 2011, Management Fees payable to the Managing Owner were $9,102,007 and $3,900,692, respectively.

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 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 Three Months Ended September 30, 2012 and 2011, the Fund incurred brokerage fees of $303,699 and $3,485, respectively. Brokerage fees incurred during the Nine Months Ended September 30, 2012 and 2011 by the Fund were $988,074 and $1,124,873, respectively. As of September 30, 2012 and December 31, 2011, brokerage fees payable were $430 and $1,860, respectively.

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, 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 Distributors, Inc.

Through a marketing agreement between the Managing Owner and Invesco Distributors, Inc. (“Invesco Distributors”), an affiliate of Invesco PowerShares Capital Management LLC (“Invesco PowerShares”), the Managing Owner, on behalf of the Fund, has appointed Invesco Distributors as a marketing agent. Invesco 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 Distributors will not open or maintain customer accounts or handle orders for the Fund. Invesco 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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(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.

(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.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs. ASU No. 2011-04 requires additional disclosures regarding fair value measurements. Effective for fiscal years beginning after December 15, 2011 and for interim periods within those fiscal years, entities are required to disclose the following:

1) The amounts of any transfers between Level 1 and Level 2 and the reasons for those transfers, and

2) For Level 3 fair value measurements, quantitative information about the significant unobservable inputs used, a description of the entity’s valuation processes, and a narrative description of the sensitivity of the fair value measurement to changes in the unobservable inputs and the interrelationship between inputs.

There were no Level 2 or Level 3 holdings as of September 30, 2012 and December 31, 2011.

(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.

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(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 September 30, 2012 and December 31, 2011 were holdings of $392,883,777 and $425,657,099, 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 September 30, 2012, the Fund had $424,045,865 of cash held by the Commodity Broker. As of December 31, 2011, the Fund had $542,289,641 of cash held by the Commodity Broker, of which $376,223,544 was on deposit to satisfy the Fund’s negative variation margin on open futures contracts. There were no cash equivalents held by the Fund as of September 30, 2012 and December 31, 2011.

(g) Receivable/ (Payable) for LME Contracts

The Fund trades aluminum, copper and zinc commodity future contracts on the London Metals Exchange (“LME”). For settlement of futures contracts traded on the LME, cash is not transferred until the settled futures contracts expire. As of September 30, 2012, the Fund had a receivable from the LME of $14,688,448 related to net realized gains on LME contracts. As of December 31, 2012, the Fund had a payable to the LME of $17,231,831 related to net realized losses on LME contracts.

Certain amounts reported in prior years have been reclassified to conform to the September 30, 2012 presentation. Net income and shareholders’ equity were not affected by these reclassifications.

(h) 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 2009.

(i) 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 September 30, 2012 and December 31, 2011, the futures contracts held by the Fund were in a net unrealized appreciation position of $491,359,456 and a net unrealized depreciation position of $376,223,544, respectively.

(j) 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.

(k) Brokerage Commissions and Fees

The Fund incurs all brokerage commissions, including applicable exchange fees, National Futures Association (“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 Three Months Ended September 30, 2012 and 2011 and the Nine Months Ended September 30, 2012 and 2011.

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(l) 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.

(m) 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.

(n) 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 Three Months Ended September 30, 2012 and 2011 and the Nine Months Ended September 30, 2012 and 2011, 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:

	September 30, 2012		December 31, 2011
United States Treasury Obligations (Level 1)	$	5,786,356,514	$	5,311,719,979
Commodity Futures Contracts (Level 1)	$	491,359,456	$	(376,223,544	)

There were no Level 2 or Level 3 holdings as of September 30, 2012 and December 31, 2011.

(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.

(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.

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(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

Summary of Share Transactions for the Three Months Ended September 30, 2012 and 2011

and the Nine Months Ended September 30, 2012 and 2011

	Shares Three Months Ended						Paid in Capital Three Months Ended						Shares Nine Months Ended						Paid in Capital Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Shares Sold		22,400,000			14,600,000		$	623,655,448		$	429,814,372			53,200,000			49,200,000		$	1,486,852,502		$	1,452,358,698
Shares Redeemed		(4,200,000	)		(11,800,000	)		(116,365,794	)		(333,914,708	)		(23,600,000	)		(24,800,000	)		(629,379,502	)		(714,432,470	)
Net Increase/ (Decrease)		18,200,000			2,800,000		$	507,289,654		$	95,899,664			29,600,000			24,400,000		$	857,473,000		$	737,926,228

(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.

(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 September 30, 2012, 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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(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 Three Months Ended September 30, 2012 and 2011 and for the Nine Months Ended September 30, 2012 and 2011. 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 net investment income and total expense ratios have been annualized. 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.

	Three Months Ended						Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Net Asset Value
Net asset value per Share, beginning of period	$	25.76		$	29.16		$	26.83		$	27.57
Net realized and change in unrealized gain (loss) on United States Treasury Obligations, Futures		3.04			(3.18	)		2.08			(1.47	)
Net investment income (loss)		(0.06	)		(0.06	)		(0.17	)		(0.18	)
Net income (loss)		2.98			(3.24	)		1.91			(1.65	)
Net asset value per Share, end of period	$	28.74		$	25.92		$	28.74		$	25.92
Market value per Share, beginning of period	$	25.75		$	28.96		$	26.84		$	27.55
Market value per Share, end of period	$	28.68		$	25.75		$	28.68		$	25.75
Ratio to average Net Assets*
Net investment income (loss)		(0.79	)%		(0.81	)%		(0.81	)%		(0.80	)%
Total expenses		0.87	%		0.85	%		0.87	%		0.87	%
Total Return, at net asset value **		11.57	%		(11.11	)%		7.12	%		(5.98	)%
Total Return, at market value **		11.38	%		(11.08	)%		6.86	%		(6.53	)%

* Percentages are annualized.

** Percentages are not annualized.

(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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ITEM 2. 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 1 of Part I of this Quarterly 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

The Fund seeks to track changes, whether positive or negative, in the level 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 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 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.

DBIQ™ is a trademark 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. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademark. Deutsche Bank AG London is an affiliate of the Fund and the Managing Owner.

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, 1997 (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		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		4.166
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

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The following table reflects the Fund’s weights for each Index Commodity as of September 30, 2012:

Index Commodity	Fund Weight (%)
Light Sweet Crude Oil		11.62
Heating Oil		12.21
RBOB Gasoline		13.06
Natural Gas		4.18
Brent Crude		12.62
Gold		7.70
Silver		1.93
Aluminum		3.88
Zinc		4.19
Copper Grade A		4.30
Corn		6.83
Wheat		5.91
Soybeans		7.26
Sugar		4.31
Closing Level as of September 30, 2012		100.00

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, respectively.

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 Total Return™ and the Index are 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 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

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(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 old Index Commodities that are leaving the Index and 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.

The CFTC and/or commodity exchanges, as applicable, impose position limits on market participants trading in certain commodities included in the Index. 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 futures contract that is a part of the Index, the Fund may invest in a futures contract referencing the particular Index Commodity other than the specific contract that is a part of the Index 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 a futures contract that is a part of 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 Fund’s Index on the Base Date.

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, and 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.

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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.

Performance Summary

This Report covers the three months ended September 30, 2012 and 2011 (hereinafter referred to as the “Three Months Ended September 30, 2012” and the “Three Months Ended September 30, 2011”, respectively) and the nine months ended September 30, 2012 and 2011 (hereinafter referred to as the “Nine Months Ended September 30, 2012” and the “Nine Months Ended September 30, 2011”, respectively). 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”).

Performance of the Fund and the exchange traded Shares are detailed below in “Results of Operations”. Past performance of the Fund and the exchange traded Shares are 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™ (“DBIQ-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 DBIQ-OY Diversified TR™ and Underlying Index Commodity Returns for the Three Months Ended September 30, 2012 and the Nine Months Ended September 30, 2012 and the Three Months Ended September 30, 2011 and the Nine Months Ended September 30, 2011” 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 DBIQ-OY Diversified TR™), and the Fund does not attempt to outperform or underperform the Index. The Index employs the optimum yield roll method with the objective of mitigating the negative effects of contango, the condition in which distant delivery prices for futures exceed spot prices, and maximizing the positive effects of backwardation, a condition opposite of contango.

Summary of DBIQ-OY Diversified TR™ and Underlying Index Commodity

Returns for the Three Months Ended September 30, 2012 and the Nine Months Ended September 30, 2012

and for the Three Months Ended September 30, 2011 and the Nine Months Ended September 30, 2011

	AGGREGATE RETURNS FOR INDICES IN THE DBIQ-OY DIVERSIFIED TR™
Underlying Index	Three  Months Ended September 30, 2012			Three  Months Ended September 30, 2011			Nine Months Ended September 30, 2012			Nine Months Ended September  30, 2011
DB Light Crude Oil Indices		15.13	%		(12.58	)%		8.93	%		2.02	%
DB Heating Oil Indices		12.51	%		(10.84	)%		6.41	%		2.85	%
DB Aluminum Indices		8.49	%		(15.56	)%		0.03	%		(14.53	)%
DB Gold Indices		10.30	%		7.77	%		12.41	%		13.48	%
DB Corn Indices		19.17	%		(4.51	)%		29.08	%		5.48	%
DB Wheat Indices		8.71	%		(6.91	)%		11.01	%		(32.42	)%
DB RBOB Gasoline Indices		18.63	%		(9.28	)%		12.59	%		6.25	%
DB Natural Gas Indices		7.68	%		(15.61	)%		(6.71	)%		(19.66	)%
DB Silver Indices		24.90	%		(13.68	)%		23.29	%		(3.41	)%
DB Zinc Indices		10.55	%		(21.07	)%		11.10	%		(25.52	)%
DB Copper Grade A Indices		6.89	%		(25.44	)%		7.60	%		(25.48	)%
DB Soybeans Indices		12.16	%		(8.88	)%		33.03	%		(9.86	)%

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	AGGREGATE RETURNS FOR INDICES IN THE DBIQ-OY DIVERSIFIED TR™
Underlying Index	Three  Months Ended September 30, 2012			Three  Months Ended September 30, 2011			Nine Months Ended September 30, 2012			Nine Months Ended September  30, 2011
DB Sugar Indices		(3.37	)%		(2.77	)%		(14.97	)%		(5.51	)%
DB Brent Crude Indices		6.03	%		(19.29	)%		(7.78	)%		(17.01	)%
AGGREGATE RETURNS		11.51	%		(10.89	)%		7.59	%		(5.92	)%

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™ and underperform the DBIQ-OY Diversified TR™. 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. 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. 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 Index.

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 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).

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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 1 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.

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.

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 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.

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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 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 no 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 used for operating activities was $986.4 million and $321.4 million for the Nine Months Ended September 30, 2012 and 2011, respectively. This amount primarily includes net purchases and sales of United States Treasury Obligations which are held at fair value on the statement of financial condition.

During the Nine Months Ended September 30, 2012, $17,711.1 million was paid to purchase United States Treasury Obligations and $17,239.4 million was received from sales and maturing contracts. During the Nine Months Ended September 30, 2011, $17,564.3 million was paid to purchase United States Treasury Obligations and $16,609.4 million was received from sales and maturing contracts. Unrealized appreciation on United States Treasury Obligations and futures increased by $867.7 million and decreased by $1,038.5 million during the Nine Months Ended September 30, 2012 and 2011, respectively.

Financing Activities

The Fund’s net cash flow provided by financing activities was $868.2 million and $737.9 million during the Nine Months Ended September 30, 2012 and 2011, respectively. This included $1,486.9 million and $1,452.4 million from the sale of Shares to Authorized Participants during the Nine Months Ended September 30, 2012 and 2011, respectively.

Results of Operations

FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2012 AND 2011 AND THE NINE MONTHS ENDED SEPTEMBER 30, 2012 AND 2011

The Fund was launched on January 31, 2006 at $25.00 per Share. The Shares 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

23

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 of the Index over any given period, all other things being equal. Similarly, trading futures or other instruments that are not 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.

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COMPARISON OF DBC, DBCNAV AND DBLCIX FOR THE THREE MONTHS ENDED

SEPTEMBER 30, 2012 AND 2011 AND THE NINE MONTHS ENDED SEPTEMBER 30, 2012 AND 2011

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.

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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.

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Additional Legends

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 JANUARY 2007 (RENAMED 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 DECEMBER 2006, 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 IN THE FUND’S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2011, 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 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 THREE MONTHS ENDED SEPTEMBER 30, 2012 COMPARED TO THE THREE MONTHS ENDED SEPTEMBER 30, 2011

Fund Share Price Performance

For the Three Months Ended September 30, 2012, the NYSE Arca market value of each Share increased 11.38% from $25.75 per Share to $28.68 per Share. The Share price low and high for the Three Months Ended September 30, 2012 and related change from the Share price on June 30, 2012 was as follows: Shares traded from a low of $25.70 per Share (-0.19%) on July 2, 2012, to a high of $29.73 per Share (+15.46%) on September 14, 2012.

For the Three Months Ended September 30, 2011, the NYSE Arca market value of each Share decreased 11.08% from $28.96 per Share to $25.75 per Share. The Share price high and low for the Three Months Ended September 30, 2011 and related change from the Share price on June 30, 2011 was as follows: Shares traded from a high of $30.84 per Share (+6.49%) on July 26, 2011, to a low of $25.75 per Share (-11.08%) on September 30, 2011.

Fund Share Net Asset Performance

For the Three Months Ended September 30, 2012, the net asset value of each Share increased 11.57% from $25.76 per Share to $28.74 per Share. Rising futures contracts prices for brent crude oil, heating oil, gold, aluminum, zinc, copper grade A, RBOB gasoline, corn, wheat, soybean, light crude oil, natural gas and silver were partially offset by lower futures contract prices for sugar during the Three Months Ended September 30, 2012 contributing to an overall 11.51% increase in the level of the DBIQ-OY Diversified TR™.

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Net income for the Three Months Ended September 30, 2012 was $655.6 million, resulting from $1.2 million of interest income, net realized loss of $189.6 million, net unrealized gains of $857.6 million and operating expenses of $13.6 million.

For the Three Months Ended September 30, 2011, the net asset value of each Share decreased 11.11% from $29.16 per Share to $25.92 per Share. Falling futures contracts prices for light crude oil, heating oil, aluminum, corn, RBOB gasoline, brent crude oil, copper grade A, wheat, zinc, soybean, natural gas, sugar, and silver were partially offset by higher futures contract prices for gold during the Three Months Ended September 30, 2011 contributing to an overall 10.89% decrease in the level of the DBIQ-OY Diversified TR™.

Net loss for the Three Months Ended September 30, 2011 was $693.1 million, resulting from $0.6 million of interest income, net realized gain of $31.7 million, net unrealized loss of $712.3 million and operating expenses of $13.1 million.

FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2012 COMPARED TO THE NINE MONTHS ENDED SEPTEMBER 30, 2011

Fund Share Price Performance

For the Nine Months Ended September 30, 2012, the NYSE Arca market value of each Share increased 6.86% from $26.84 per Share to $28.68 per Share. The Share price low and high for the Nine Months Ended September 30, 2012 and related change from the Share price on December 31, 2011 was as follows: Shares traded from a low of $24.15 per Share (-10.02%) on June 21, 2012, to a high of $29.78 per Share (+10.95%) on March 1, 2012.

For the Nine Months Ended September 30, 2011, the NYSE Arca market value of each Share decreased 6.53% from $27.55 per Share to $25.75 per Share. The Share price high and low for the Nine Months Ended September 30, 2011 and related change from the Share price on 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 $25.75 per Share (-6.53%) on September 30, 2011.

Fund Share Net Asset Performance

For the Nine Months Ended September 30, 2012, the net asset value of each Share increased 7.12% from $26.83 per Share to $28.74 per Share. Rising futures contracts prices for heating oil, aluminum, RBOB gasoline, light crude oil, corn, gold, wheat, zinc, copper grade A, soybean and silver were partially offset by lower futures contract prices for brent crude oil, sugar and natural gas during the Nine Months Ended September 30, 2012 contributing to an overall 7.59% increase in the level of the DBIQ-OY Diversified TR™.

Net income for the Nine Months Ended September 30, 2012 was $382.5 million, resulting from $2.7 million of interest income, net realized loss of $448.1 million, net unrealized gain of $867.7 million and operating expenses of $39.8 million.

For the Nine Months Ended September 30, 2011, the net asset value of each Share decreased 5.98% from $27.57 per Share to $25.92 per Share. Falling futures contracts prices for aluminum, brent crude oil, wheat, zinc, copper Grade A, soybean, sugar, natural gas and silver were partially offset by higher futures contract prices for RBOB gasoline, corn, heating oil, gold and light crude oil during the Nine Months Ended September 30, 2011 contributing to an overall 5.92% decrease in the level of the DBIQ-OY Diversified TR™.

Net loss for the Nine Months Ended September 30, 2011 was $412.4 million, resulting from $3.4 million of interest income, net realized gain of $662.0 million, net unrealized loss of $1,038.5 million and operating expenses of $39.3 million.

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.

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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 3. 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 (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.

The following table indicates the trading VaR associated with the Fund’s total assets as of September 30, 2012.

Description	Total Assets	Daily Volatility			VaR* (99 Percentile)		Number of times VaR Exceeded
PowerShares DB Commodity Index Tracking Fund	$6,716,450,283		1.04	%	$	162,836,412		0

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	$5,488,516,952		1.31	%	$	167,938,883		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.

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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 September 30, 2012 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

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.

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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.

AGRICULTURAL

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.

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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.

ITEM 4. CONTROLS AND PROCEDURES.

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of the management of the Managing Owner, including Martin Kremenstein, its Chief Executive Officer, and Michael Gilligan, its Chief 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 quarterly report, and, based upon that evaluation, Martin Kremenstein, the Chief Executive Officer, and Michael Gilligan, the Chief 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 Chief 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.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings.

Not applicable.

Item 1A. Risk Factors.

There are no material changes from risk factors as previously disclosed in the Annual Report on Form 10-K for the year ended December 31, 2011, filed February 28, 2012.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

(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) Not applicable.

(c) The following table summarizes the redemptions by Authorized Participants during the Three Months Ended September 30, 2012 and 2011:

Period of Redemption	Total Number of Shares Redeemed		Average Price Paid per Share
Three Months Ended September 30, 2012		4,200,000	$	27.71
Three Months Ended September 30, 2011		11,800,000	$	28.30

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosure.

Not applicable.

Item 5. Other Information.

The information below is provided pursuant to CFTC Rule 4.24 which requires the disclosure of material actions that occurred within the last 5 years, including certain resolved matters.

At any given time and in the ordinary course of their business, Deutsche Bank Securities Inc. (“DBSI”) is involved in and subject to a number of legal actions, administrative proceedings and regulatory examinations, inquiries and investigations, which, in the aggregate, are not, as of the date of this disclosure document, expected to have a material effect upon their condition, financial or otherwise, or to materially impair their ability to perform their obligation as a clearing member or in rendering services to each Fund. Except as disclosed below, there have been no administrative, civil or criminal proceedings pending, on appeal or concluded against DBSI or its principals within the five years preceding the date of this disclosure document that DBSI would deem material for purposes of Part 4 of CFTC regulations.

Tax-Related Litigation

Deutsche Bank AG (the “Bank”), along with certain affiliates, including DBSI, and current and/or former employees (collectively referred to as Deutsche Bank), have collectively been named as defendants in a number of legal proceedings brought by customers in various tax-oriented transactions. Deutsche Bank provided financial products and services to these customers, who were advised by various accounting, legal and financial advisory professionals. The customers claimed tax benefits as a result of these transactions, and the United States Internal Revenue Service (IRS) has rejected those claims. In these legal proceedings, the customers allege that the professional advisors, together with Deutsche Bank, improperly misled the customers into believing that the claimed tax benefits would be upheld by the IRS. The legal proceedings are pending in state and federal courts, and claims against Deutsche Bank are alleged under both U.S. state and federal law. Approximately 106 legal proceedings have been resolved and dismissed with prejudice with respect to Deutsche Bank. A number of other legal proceedings remain pending as against Deutsche Bank and are currently at various pre-trial stages, including discovery. Deutsche Bank has received a number of unfiled claims as well, and has resolved certain of those unfiled claims, though others remain pending against Deutsche Bank. The Bank does not expect these pending legal proceedings and unfiled claims to have a significant effect on its financial position or profitability.

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Mortgage-Related and Asset Backed Securities Matters

The Bank and its affiliates, including DBSI (collectively referred to as Deutsche Bank), have received subpoenas and requests for information from certain regulators and government entities concerning its activities regarding the origination, purchase, securitization, sale and/or trading of mortgage loans, residential mortgage backed securities (RMBS), collateralized debt obligations, asset backed commercial paper and credit derivatives. Deutsche Bank is cooperating fully in response to those subpoenas and requests for information.

Deutsche Bank has been named as defendant in numerous civil litigations in various roles as issuer or underwriter in RMBS offerings. These cases include purported class action suits, actions by individual purchasers of securities, and actions by insurance companies that guaranteed payments of principal and interest for particular tranches of securities offerings. Although the allegations vary by lawsuit, these cases generally allege that the RMBS offering documents contained material misrepresentations and omissions, including with regard to the underwriting standards pursuant to which the underlying mortgage loans were issued, or assert that various representations or warranties relating to the loans were breached at the time of origination.

Deutsche Bank and several current or former employees were named as defendants in a putative class action commenced on June 27, 2008, relating to two Deutsche Bank-issued RMBS offerings. Following a mediation, the court has approved a settlement of the case.

Deutsche Bank is a defendant in putative class actions relating to its role, along with other financial institutions, as underwriter of RMBS issued by various third-parties and their affiliates including Countrywide Financial Corporation, IndyMac MBS, Inc., Novastar Mortgage Corporation, and Residential Accredit Loans, Inc. These cases are in various stages up through discovery. On March 29, 2012, the court dismissed with prejudice and without leave to replead the putative Novastar Mortgage Corporation class action, which the plaintiffs have appealed.

Deutsche Bank is a defendant in various non-class action lawsuits by alleged purchasers of, and counterparties involved in transactions relating to, RMBS, and their affiliates, including Allstate Insurance Company, Asset Management Fund, Assured Guaranty Municipal Corporation, Baverische Landesbank, Cambridge Place Investments Management Inc., the Federal Deposit Insurance Corporation (as conservator for Franklin Bank S.S.B., Citizens National Bank and Strategic Capital Bank), the Federal Home Loan Bank of Boston, the Federal Home Loan Bank of San Francisco, the Federal Home Loan Bank of Seattle, the Federal Housing Finance Agency (as conservator for Fannie Mae and Freddie Mac), John Hancock Insurance Company, Mass Mutual Life Insurance Company, Phoenix Light SF Limited, Sealink Funding Ltd., Stichting Pensioenfonds ABP, The Charles Schwab Corporation, The Union Central Life Insurance Company, The Western and Southern Life Insurance Co. and the West Virginia Investment Management Board. These civil litigations are in various stages up through discovery.

In the actions against Deutsche Bank solely as an underwriter of other issuers’ RMBS offerings, Deutsche Bank has contractual rights to indemnification from the issuers, but those indemnity rights may in whole or in part prove effectively unenforceable where the issuers are now or may in the future be in bankruptcy or otherwise defunct.

On February 6, 2012, the United States District Court for the Southern District of New York issued an order dismissing claims brought by Dexia SA/NV and Teachers Insurance and Annuity Association of America, and their affiliates. The court dismissed some of the claims with prejudice and granted the plaintiffs leave to replead other claims.

On July 16, 2012, the Fourth Judicial District for the State of Minnesota dismissed Deutsche Bank from a litigation brought by Moneygram Payment Systems, Inc. (Moneygram) relating to investments in RMBS, collateralized debt obligations and credit-linked notes. The court further denied Moneygram’s motion for reconsideration.

A number of other entities have threatened to assert claims against Deutsche Bank in connection with various RMBS offerings and other related products, and Deutsche Bank has entered into agreements with a number of these entities to toll the relevant statute of limitations. It is possible that these potential claims may have a material impact on Deutsche Bank.

On May 3, 2011, the United States Department of Justice (USDOJ) filed a civil action against Deutsche Bank AG and MortgageIT, Inc. (MIT) in the United States District Court for the Southern District of New York. The USDOJ filed an amended complaint on August 22, 2011. The amended complaint, which asserts claims under the U.S. False Claims Act and common law, alleges that Deutsche Bank AG, DB Structured Products, Inc., MIT, and DBSI submitted false certifications to the Department of Housing and Urban Development’s Federal Housing Administration (FHA) concerning MIT’s compliance with FHA requirements for quality controls and concerning whether individual loans qualified for FHA insurance. As set forth in the amended complaint, the FHA has paid $368 million in insurance claims on mortgages that are allegedly subject to false certifications. The amended complaint seeks recovery of treble damages and indemnification of future losses on loans insured by FHA, and as set forth in the filings, the government seeks over $1 billion in damages. On September 23, 2011, the defendants filed a motion to dismiss the amended complaint. Following a hearing on December 21, 2011, the court granted the USDOJ leave to file a second amended complaint. On May 10, 2012, Deutsche Bank settled this litigation with the USDOJ for $202.3 million.

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On May 8, 2012, Deutsche Bank reached a settlement with Assured Guaranty Municipal Corporation (Assured) regarding claims on certain RMBS issued and underwritten by Deutsche Bank that are covered by financial guaranty insurance provided by Assured. Pursuant to this settlement, Deutsche Bank made a payment of $166 million and agreed to participate in a loss share arrangement to cover a percentage of Assured’s future losses on certain RMBS issued by Deutsche Bank. All of Deutsche Bank’s currently expected payments pursuant to this settlement were provisioned in previous quarters. This settlement resolves two litigations with Assured relating to financial guaranty insurance and limits claims in a third litigation where all the underlying mortgage collateral was originated by Greenpoint Mortgage Funding, Inc. (a subsidiary of Capital One), which is required to indemnify Deutsche Bank.

Auction Rate Securities

The Bank and DBSI, including a division of DBSI, have been named as defendants in 21 individual actions asserting various claims under the federal securities laws and state common law arising out of the sale of auction rate securities (ARS). Of those 21 actions, four are pending and 17 have been resolved and dismissed with prejudice. The Bank and DBSI were the subjects of a putative class action, filed in the United States District Court for the Southern District of New York, asserting various claims under the federal securities laws on behalf of all persons or entities who purchased and continue to hold ARS offered for sale by the Bank and DBSI between March 17, 2003 and February 13, 2008. In December 2010, the court dismissed the putative class action with prejudice. After initially filing a notice of appeal, the plaintiff voluntarily withdrew and dismissed the appeal in December 2011. The Bank was also named as a defendant, along with ten other financial institutions, in two putative class actions, filed in the United States District Court for the Southern District of New York, asserting violations of the antitrust laws. The putative class actions allege that the defendants conspired to artificially support and then, in February 2008, restrain the ARS market. On or about January 26, 2010, the court dismissed the two putative class actions. The plaintiffs have filed appeals of the dismissals.

Trust Preferred Securities

The Bank and certain of its affiliates and officers, including DBSI, are the subject of a consolidated putative class action, filed in the United States District Court for the Southern District of New York, asserting claims under the federal securities laws on behalf of persons who purchased certain trust preferred securities issued by Deutsche Bank and its affiliates between October 2006 and May 2008. Claims are asserted under sections 11, 12(a)(2), and 15 of the Securities Act of 1933. An amended and consolidated class action complaint was filed on January 25, 2010. On August 19, 2011, the court granted in part and denied in part the defendants’ motion to dismiss. Defendants have moved for reconsideration of the portion of the decision denying the motion to dismiss. On September 20, 2011, plaintiffs filed a second amended complaint, which no longer includes claims based on the October 2006 issuance of securities.

Item 6. Exhibits.

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 Chief 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 - September 30, 2012 (unaudited) and December 31, 2011, (ii) the Unaudited Schedule of Investments of PowerShares DB Commodity Index Tracking Fund - September 30, 2012, (iii) the Schedule of Investments of PowerShares DB Commodity Index Tracking Fund - December 31, 2011, (iv) the Unaudited Statements of Income and Expenses of PowerShares DB Commodity Index Tracking Fund - Three Months Ended September 30, 2012 and 2011 and Nine Months Ended September 30, 2012 and 2011, (v) the Unaudited Statements of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund - Three Months Ended September 30, 2012, (vi) the Unaudited Statements of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund - Three Months Ended September 30, 2011, (vii) the Unaudited Statements of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund - Nine Months Ended September 30, 2012, (viii) the Unaudited Statements of Changes in Shareholders’ Equity of PowerShares DB Commodity Index Tracking Fund - Nine Months Ended September 30, 2011, (ix) the Unaudited Statements of Cash Flows of PowerShares DB Commodity Index Tracking Fund - Nine Months Ended September 30, 2012 and 2011, and (x) Notes to Unaudited Financial Statements of PowerShares DB Commodity Index Tracking Fund.

35

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/    MARTIN KREMENSTEIN
Name:	Martin Kremenstein
Title:	Chief Executive Officer

By:	/S/    MICHAEL GILLIGAN
Name:	Michael Gilligan
Title:	Chief Financial Officer

Dated: November 2, 2012

36

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Martin Kremenstein, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q 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: November 2, 2012	/s/ Martin Kremenstein
	Martin Kremenstein
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael Gilligan, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q 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: November 2, 2012	/s/ Michael Gilligan
	Michael Gilligan
	Chief Financial Officer

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, Martin Kremenstein, 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 Quarterly Report on Form 10-Q for the period ended September 30, 2012, as filed with the Securities and Exchange Commission on the date hereof (the “Quarterly 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 Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Trust.

Dated: November 2, 2012	/s/ Martin Kremenstein
	Martin Kremenstein
	Chief Executive Officer

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, Chief 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 Quarterly Report on Form 10-Q for the period ended September 30, 2012, as filed with the Securities and Exchange Commission on the date hereof (the “Quarterly 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 Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Trust.

Dated: November 2, 2012	/s/ Michael Gilligan
	Michael Gilligan
	Chief Financial Officer

XML

Net Asset Value And Financial Highlights (Net Asset Value) (Detail) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Net Asset Value
Net asset value per Share, beginning of period	$ 25.76		$ 29.16		$ 26.83		$ 27.57
Net realized and change in unrealized gain (loss) on United States Treasury Obligations, Futures	$ 3.04		$ (3.18)		$ 2.08		$ (1.47)
Net investment income (loss)	$ (0.06)		$ (0.06)		$ (0.17)		$ (0.18)
Net income (loss)	$ 2.98		$ (3.24)		$ 1.91		$ (1.65)
Net asset value per Share, end of period	$ 28.74		$ 25.92		$ 28.74		$ 25.92
Market value per Share, beginning of period	$ 25.75		$ 28.96		$ 26.84		$ 27.55
Market value per Share, end of period	$ 28.68		$ 25.75		$ 28.68		$ 25.75
Ratio to average Net Assets
Net investment income (loss)	(0.79%)	[1]	(0.81%)	[1]	(0.81%)	[1]	(0.80%)	[1]
Total expenses	0.87%	[1]	0.85%	[1]	0.87%	[1]	0.87%	[1]
Total Return, at net asset value	11.57%	[2]	(11.11%)	[2]	7.12%	[2]	(5.98%)	[2]
Total Return, at market value	11.38%	[2]	(11.08%)	[2]	6.86%	[2]	(6.53%)	[2]

[1] Percentages are annualized.

[2] Percentages are not annualized.

XML

Net Asset Value And Financial Highlights (Tables)

9 Months Ended

Sep. 30, 2012

Net Asset Value

	Three Months Ended						Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Net Asset Value
Net asset value per Share, beginning of period	$	25.76		$	29.16		$	26.83		$	27.57
Net realized and change in unrealized gain (loss) on United States Treasury Obligations, Futures		3.04			(3.18	)		2.08			(1.47	)
Net investment income (loss)		(0.06	)		(0.06	)		(0.17	)		(0.18	)
Net income (loss)		2.98			(3.24	)		1.91			(1.65	)
Net asset value per Share, end of period	$	28.74		$	25.92		$	28.74		$	25.92
Market value per Share, beginning of period	$	25.75		$	28.96		$	26.84		$	27.55
Market value per Share, end of period	$	28.68		$	25.75		$	28.68		$	25.75
Ratio to average Net Assets*
Net investment income (loss)		(0.79	)%		(0.81	)%		(0.81	)%		(0.80	)%
Total expenses		0.87	%		0.85	%		0.87	%		0.87	%
Total Return, at net asset value **		11.57	%		(11.11	)%		7.12	%		(5.98	)%
Total Return, at market value **		11.38	%		(11.08	)%		6.86	%		(6.53	)%

* Percentages are annualized.

** Percentages are not annualized.

XML

Statement Of Changes In Shareholders' Equity (USD $)	Total USD ($)	Paid In Capital [Member] USD ($)	Preferred Stock [Member]	Preferred Stock [Member] Paid In Capital [Member] USD ($)	Preferred Stock [Member] Retained Earnings [Member] USD ($)	Preferred Stock [Member] Parent [Member] USD ($)	Shares [Member]	Shares [Member] Paid In Capital [Member] USD ($)	Shares [Member] Retained Earnings [Member] USD ($)	Shares [Member] Parent [Member] USD ($)
Balance - Value at Jun. 30, 2011	$ 6,029,503,884			$ 1,000	$ 166	$ 1,166		$ 4,920,804,860	$ 1,108,697,858	$ 6,029,502,718
Balance - Shares at Jun. 30, 2011			40				206,800,000
Sale of Shares - Value	429,814,372	429,814,372						429,814,372		429,814,372
Sale of Shares - Shares							14,600,000
Redemption of Shares - Value	(333,914,708)							(333,914,708)		(333,914,708)
Redemption of Shares - Shares							(11,800,000)
Net Income (Loss)
Net investment income (loss)	(12,541,638)				(1)	(1)			(12,541,637)	(12,541,637)
Net realized gain (loss) on United States Treasury Obligations and Futures	31,735,137				14	14			31,735,123	31,735,123
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures	(712,329,422)				(142)	(142)			(712,329,280)	(712,329,280)
Net Income (Loss)	(693,135,923)				(129)	(129)			(693,135,794)	(693,135,794)
Balance - Value at Sep. 30, 2011	5,432,267,625			1,000	37	1,037		5,016,704,524	415,562,064	5,432,266,588
Balance - Shares at Sep. 30, 2011			40				209,600,000
Balance - Value at Dec. 31, 2010	5,106,775,927			1,000	103	1,103		4,278,778,296	827,996,528	5,106,774,824
Balance - Shares at Dec. 31, 2010			40				185,200,000
Sale of Shares - Value	1,452,358,698	1,452,358,698						1,452,358,698		1,452,358,698
Sale of Shares - Shares							49,200,000
Redemption of Shares - Value	(714,432,470)							(714,432,470)		(714,432,470)
Redemption of Shares - Shares							(24,800,000)
Net Income (Loss)
Net investment income (loss)	(35,914,368)				(6)	(6)			(35,914,362)	(35,914,362)
Net realized gain (loss) on United States Treasury Obligations and Futures	661,936,313				155	155			661,936,158	661,936,158
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures	(1,038,456,475)				(215)	(215)			(1,038,456,260)	(1,038,456,260)
Net Income (Loss)	(412,434,530)				(66)	(66)			(412,434,464)	(412,434,464)
Balance - Value at Sep. 30, 2011	5,432,267,625			1,000	37	1,037		5,016,704,524	415,562,064	5,432,266,588
Balance - Shares at Sep. 30, 2011			40				209,600,000
Balance - Value at Dec. 31, 2011	5,467,382,569			1,000	73	1,073		4,872,481,564	594,899,932	5,467,381,496
Balance - Shares at Dec. 31, 2011			40				203,800,000
Sale of Shares - Value	1,486,852,502	1,486,852,502						1,486,852,502		1,486,852,502
Sale of Shares - Shares							53,200,000
Redemption of Shares - Value	(629,379,502)							(629,379,502)		(629,379,502)
Redemption of Shares - Shares							(23,600,000)
Net Income (Loss)
Net investment income (loss)	(37,127,646)				(8)	(8)			(37,127,638)	(37,127,638)
Net realized gain (loss) on United States Treasury Obligations and Futures	(448,119,747)				(90)	(90)			(448,119,657)	(448,119,657)
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures	867,739,670				175	175			867,739,495	867,739,495
Net Income (Loss)	382,492,277				77	77			382,492,200	382,492,200
Balance - Value at Sep. 30, 2012	6,707,347,846			1,000	150	1,150		5,729,954,564	977,392,132	6,707,346,696
Balance - Shares at Sep. 30, 2012			40				233,400,000
Balance - Value at Jun. 30, 2012	5,544,491,020			1,000	30	1,030		5,222,664,910	321,825,080	5,544,489,990
Balance - Shares at Jun. 30, 2012			40				215,200,000
Sale of Shares - Value	623,655,448	623,655,448						623,655,448		623,655,448
Sale of Shares - Shares							22,400,000
Redemption of Shares - Value	(116,365,794)							(116,365,794)		(116,365,794)
Redemption of Shares - Shares							(4,200,000)
Net Income (Loss)
Net investment income (loss)	(12,379,878)				(4)	(4)			(12,379,874)	(12,379,874)
Net realized gain (loss) on United States Treasury Obligations and Futures	(189,681,981)				(49)	(49)			(189,681,932)	(189,681,932)
Net change in unrealized gain (loss) on United States Treasury Obligations and Futures	857,629,031				173	173			857,628,858	857,628,858
Net Income (Loss)	655,567,172				120	120			655,567,052	655,567,052
Balance - Value at Sep. 30, 2012	$ 6,707,347,846			$ 1,000	$ 150	$ 1,150		$ 5,729,954,564	$ 977,392,132	$ 6,707,346,696
Balance - Shares at Sep. 30, 2012			40				233,400,000

XML

Summary Of Significant Accounting Policies (Detail) (USD $)	9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Maximum [Member]	Sep. 30, 2011 Maximum [Member]	Sep. 30, 2012 Maximum [Member]	Sep. 30, 2011 Maximum [Member]	Sep. 30, 2012 United States Treasury Obligations [Member]	Dec. 31, 2011 United States Treasury Obligations [Member]
Significant Accounting Policies [Line Items]
Restricted investments	$ 392,883,777	$ 425,657,099					$ 392,883,777	$ 425,657,099
Cash held with the Commodity Broker	424,045,865	542,289,641
Deposit to satisfy the Fund's negative variation		376,223,544
Receivable for LME contracts	14,688,448
Payable for LME Contracts		17,231,831
Net unrealized depreciation on future contracts	491,359,456	376,223,544
Management fee percentage per annum of daily net asset	0.85%
Average charges paid to Broker per round-turn trade, maximum			$ 10.00	$ 10.00	$ 10.00	$ 10.00

XML

Service Providers And Related Party Agreements (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Management Fees	$ 13,320,547	$ 13,105,781	$ 38,825,617	$ 38,205,824
Management Fees payable	9,102,007		9,102,007		3,900,692
Brokerage commissions and fees	303,699	3,485	988,074	1,124,873
Deutsche Bank Securities Inc. [Member]
Brokerage commissions and fees	303,699	3,485	988,074	1,124,873
PayablesToBrokerDealersAndClearingOrganizations	$ 430		$ 430		$ 1,860

XML

Fair Value Measurements (Assets And Liabilities Measured At Fair Value) (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
United States Treasury Obligations (Level 1)	$ 5,786,356,514	$ 5,311,719,979
Commodity Futures Contracts (Level 1)	491,359,456	(376,223,544)
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
United States Treasury Obligations (Level 1)	5,786,356,514	5,311,719,979
Commodity Futures Contracts (Level 1)	$ 491,359,456	$ (376,223,544)

XML

Share Purchases And Redemptions (Narrative) (Detail)	9 Months Ended
	Sep. 30, 2012 Vessel
Number of shares issued per basket	200,000
Minimum number of baskets that can be purchased	1

XML

Statements Of Income And Expenses (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income
Interest Income	$ 1,244,368	$ 567,628	$ 2,686,045	$ 3,416,329
Expenses
Management Fee	13,320,547	13,105,781	38,825,617	38,205,824
Brokerage commissions and fees	303,699	3,485	988,074	1,124,873
Total Expenses	13,624,246	13,109,266	39,813,691	39,330,697
Net investment income (loss)	(12,379,878)	(12,541,638)	(37,127,646)	(35,914,368)
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations and Futures
United States Treasury Obligations	1,156	10,612	16,347	37,252
Futures	(189,683,137)	31,724,525	(448,136,094)	661,899,061
Net realized gain (loss)	(189,681,981)	31,735,137	(448,119,747)	661,936,313
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations	27,749	(60,700)	156,670	(67,608)
Futures	857,601,282	(712,268,722)	867,583,000	(1,038,388,867)
Net change in unrealized gain (loss)	857,629,031	(712,329,422)	867,739,670	(1,038,456,475)
Net realized and net change in unrealized gain (loss) on United States Treasury Obligations and Futures	667,947,050	(680,594,285)	419,619,923	(376,520,162)
Net Income (Loss)	$ 655,567,172	$ (693,135,923)	$ 382,492,277	$ (412,434,530)

XML

Share Purchases And Redemptions (Summary Of Share Transactions) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Share Purchases And Redemptions [Line Items]
Shares Sold, Paid in Capital	$ 623,655,448	$ 429,814,372	$ 1,486,852,502	$ 1,452,358,698
Shares [Member]
Share Purchases And Redemptions [Line Items]
Shares Sold,Shares	22,400,000	14,600,000	53,200,000	49,200,000
Shares Redeemed,Shares	(4,200,000)	(11,800,000)	(23,600,000)	(24,800,000)
Net Increase/ (Decrease),Shares	18,200,000	2,800,000	29,600,000	24,400,000
Paid In Capital [Member]
Share Purchases And Redemptions [Line Items]
Shares Sold, Paid in Capital	623,655,448	429,814,372	1,486,852,502	1,452,358,698
Shares Redeemed, Paid in Capital	(116,365,794)	(333,914,708)	(629,379,502)	(714,432,470)
Net Increase/ (Decrease), Paid in Capital	507,289,654	95,899,664	857,473,000	737,926,228
Paid In Capital [Member] | Shares [Member]
Share Purchases And Redemptions [Line Items]
Shares Sold, Paid in Capital	$ 623,655,448	$ 429,814,372	$ 1,486,852,502	$ 1,452,358,698

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Statements Of Financial Condition (USD $)	Sep. 30, 2012	Dec. 31, 2011
Assets
United States Treasury Obligations, at fair value (cost $5,786,204,357 and $5,311,724,492 respectively)	$ 5,786,356,514	$ 5,311,719,979
Cash held by broker	424,045,865	542,289,641
Net unrealized appreciation (depreciation) on futures contracts	491,359,456	(376,223,544)
Deposits with broker	6,701,761,835	5,477,786,076
Receivable for LME contracts	14,688,448
Receivable for shares issued		10,730,876
Total assets	6,716,450,283	5,488,516,952
Liabilities
Payable for LME Contracts		17,231,831
Management fee payable	9,102,007	3,900,692
Brokerage fee payable	430	1,860
Total liabilities	9,102,437	21,134,383
Commitments and Contingencies (Note 9)
General shares:
Paid in capital-40 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively	1,000	1,000
Accumulated earnings (deficit)	150	73
Total General shares	1,150	1,073
Shares:
Paid in capital-233,400,000 and 203,800,000 redeemable Shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively	5,729,954,564	4,872,481,564
Accumulated earnings (deficit)	977,392,132	594,899,932
Total Shares	6,707,346,696	5,467,381,496
Total shareholders' equity	6,707,347,846	5,467,382,569
Total liabilities and equity	$ 6,716,450,283	$ 5,488,516,952
Net asset value per share
General shares	28.75	26.83
Shares	28.74	26.83

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Schedule Of Investments (Futures Contracts) (USD $)	Sep. 30, 2012 Aluminum (4,845 Contracts, Settlement Date October 14, 2013) [Member]	Sep. 30, 2012 Brent Crude (7,730 Contracts, Settlement Date November 15, 2012) [Member]	Sep. 30, 2012 Copper (1,432 Contracts, Settlement Date March 18, 2013) [Member]	Sep. 30, 2012 Corn (12,335 Contracts, Settlement Date December 14, 2012) [Member]	Sep. 30, 2012 Gold (2,967 Contracts, Settlement Date December 27, 2012) [Member]	Sep. 30, 2012 Heating Oil (6,525 Contracts, Settlement Date March 28, 2013) [Member]	Sep. 30, 2012 Natural Gas (7,355 Contracts, Settlement Date September 26, 2013) [Member]	Sep. 30, 2012 RBOB Gasoline (7,619 Contracts, Settlement Date November 30, 2012) [Member]	Sep. 30, 2012 Red Wheat (424 Contracts, Settlement Date July 12, 2013) [Member]	Sep. 30, 2012 Silver (763 Contracts, Settlement Date December 27, 2012) [Member]	Sep. 30, 2012 Soybeans (4,873 Contracts, Settlement Date November 14, 2012) [Member]	Sep. 30, 2012 Soybeans (1,318 Contracts, Settlement Date January 14, 2013) [Member]	Sep. 30, 2012 Sugar (12,823 Contracts, Settlement Date June 28, 2013) [Member]	Sep. 30, 2012 Wheat (827 Contracts, Settlement Date December 14, 2012) [Member]	Sep. 30, 2012 Wheat (7,976 Contracts, Settlement Date July 12, 2013) [Member]	Sep. 30, 2012 WTI Crude NYMEX (8,442 Contracts, Settlement Date June 20, 2013) [Member]	Sep. 30, 2012 Zinc (5,463 Contracts, Settlement Date December 17, 2012) [Member]	Sep. 30, 2012 Net Unrealized Appreciation 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]	Dec. 31, 2011 Net Unrealized Depreciation On Futures Contracts [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	0.14%	(0.19%)	(0.12%)	1.37%	0.58%	0.04%	0.40%	1.15%	0.00%	0.04%	1.27%	0.42%	(0.08%)	0.10%	0.88%	0.85%	0.48%	7.33%	(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%)	(6.88%)
Fair Value	$ 9,276,501	$ (12,996,080)	$ (8,202,600)	$ 91,546,750	$ 39,130,620	$ 2,417,957	$ 26,902,130	$ 77,242,754	$ 219,800	$ 2,959,225	$ 85,234,013	$ 28,277,413	$ (5,589,528)	$ 6,499,288	$ 59,107,675	$ 56,892,240	$ 32,441,298	$ 491,359,456	$ (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)	$ (376,223,544)

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Summary Of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2012

Basis Of Presentation

(a) Basis of Presentation

The financial statements of the Fund have been prepared using U.S. generally accepted accounting principles.

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.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs. ASU No. 2011-04 requires additional disclosures regarding fair value measurements. Effective for fiscal years beginning after December 15, 2011 and for interim periods within those fiscal years, entities are required to disclose the following:

1) The amounts of any transfers between Level 1 and Level 2 and the reasons for those transfers, and

2) For Level 3 fair value measurements, quantitative information about the significant unobservable inputs used, a description of the entity’s valuation processes, and a narrative description of the sensitivity of the fair value measurement to changes in the unobservable inputs and the interrelationship between inputs.

There were no Level 2 or Level 3 holdings as of September 30, 2012 and December 31, 2011.

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 September 30, 2012 and December 31, 2011 were holdings of $392,883,777 and $425,657,099, 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 September 30, 2012, the Fund had $424,045,865 of cash held by the Commodity Broker. As of December 31, 2011, the Fund had $542,289,641 of cash held by the Commodity Broker, of which $376,223,544 was on deposit to satisfy the Fund’s negative variation margin on open futures contracts. There were no cash equivalents held by the Fund as of September 30, 2012 and December 31, 2011.

Receivable/ (Payable) For LME Contracts

(g) Receivable/ (Payable) for LME Contracts

The Fund trades aluminum, copper and zinc commodity future contracts on the London Metals Exchange (“LME”). For settlement of futures contracts traded on the LME, cash is not transferred until the settled futures contracts expire. As of September 30, 2012, the Fund had a receivable from the LME of $14,688,448 related to net realized gains on LME contracts. As of December 31, 2012, the Fund had a payable to the LME of $17,231,831 related to net realized losses on LME contracts.

Certain amounts reported in prior years have been reclassified to conform to the September 30, 2012 presentation. Net income and shareholders’ equity were not affected by these reclassifications.

Income Taxes

(h) 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 2009.

Futures Contracts

(i) 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 September 30, 2012 and December 31, 2011, the futures contracts held by the Fund were in a net unrealized appreciation position of $491,359,456 and a net unrealized depreciation position of $376,223,544, respectively.

Management Fee

(j) 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.

Brokerage Commissions And Fees

(k) Brokerage Commissions and Fees

The Fund incurs all brokerage commissions, including applicable exchange fees, National Futures Association (“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 Three Months Ended September 30, 2012 and 2011 and the Nine Months Ended September 30, 2012 and 2011.

Routine Operational, Administrative And Other Ordinary Expenses

(l) 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

(m) 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

(n) 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 Three Months Ended September 30, 2012 and 2011 and the Nine Months Ended September 30, 2012 and 2011, the Fund did not incur such expenses.

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Share Purchases And Redemptions (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Share Transactions

	Shares Three Months Ended						Paid in Capital Three Months Ended						Shares Nine Months Ended						Paid in Capital Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Shares Sold		22,400,000			14,600,000		$	623,655,448		$	429,814,372			53,200,000			49,200,000		$	1,486,852,502		$	1,452,358,698
Shares Redeemed		(4,200,000	)		(11,800,000	)		(116,365,794	)		(333,914,708	)		(23,600,000	)		(24,800,000	)		(629,379,502	)		(714,432,470	)
Net Increase/ (Decrease)		18,200,000			2,800,000		$	507,289,654		$	95,899,664			29,600,000			24,400,000		$	857,473,000		$	737,926,228

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Schedule Of Investments (Futures Contracts) (Parenthetical) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Schedule of Investments [Line Items]
Unrealized gains	$ 536,116,936	$ 41,350,976
Unrealized losses	$ 44,757,480	$ 417,574,520
Aluminum (4,845 Contracts, Settlement Date October 14, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	4,845
Open futures contracts, settlement date	Oct. 14, 2013
Brent Crude (7,730 Contracts, Settlement Date November 15, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	7,730
Open futures contracts, settlement date	Nov. 15, 2012
Copper (1,432 Contracts, Settlement Date March 18, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	1,432
Open futures contracts, settlement date	Mar. 18, 2013
Corn (12,335 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	12,335
Open futures contracts, settlement date	Dec. 14, 2012
Gold (2,967 Contracts, Settlement Date December 27, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	2,967
Open futures contracts, settlement date	Dec. 27, 2012
Heating Oil (6,525 Contracts, Settlement Date March 28, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	6,525
Open futures contracts, settlement date	Mar. 28, 2013
Natural Gas (7,355 Contracts, Settlement Date September 26, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	7,355
Open futures contracts, settlement date	Sep. 26, 2013
RBOB Gasoline (7,619 Contracts, Settlement Date November 30, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	7,619
Open futures contracts, settlement date	Nov. 30, 2012
Red Wheat (424 Contracts, Settlement Date July 12, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	424
Open futures contracts, settlement date	Jul. 12, 2013
Silver (763 Contracts, Settlement Date December 27, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	763
Open futures contracts, settlement date	Dec. 27, 2012
Soybeans (4,873 Contracts, Settlement Date November 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	4,873
Open futures contracts, settlement date	Nov. 14, 2012
Soybeans (1,318 Contracts, Settlement Date January 14, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	1,318
Open futures contracts, settlement date	Jan. 14, 2013
Sugar (12,823 Contracts, Settlement Date June 28, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	12,823
Open futures contracts, settlement date	Jun. 28, 2013
Wheat (827 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	827
Open futures contracts, settlement date	Dec. 14, 2012
Wheat (7,976 Contracts, Settlement Date July 12, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	7,976
Open futures contracts, settlement date	Jul. 12, 2013
WTI Crude NYMEX (8,442 Contracts, Settlement Date June 20, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	8,442
Open futures contracts, settlement date	Jun. 20, 2013
Zinc (5,463 Contracts, Settlement Date December 17, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts	5,463
Open futures contracts, settlement date	Dec. 17, 2012
Aluminum (4,467 Contracts, Settlement Date September 17, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		4,467
Open futures contracts, settlement date		Sep. 17, 2012
Brent Crude (6,473 Contracts, Settlement Date February 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		6,473
Open futures contracts, settlement date		Feb. 14, 2012
Copper (1,256 Contracts, Settlement Date March 19, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		1,256
Open futures contracts, settlement date		Mar. 19, 2012
Corn (3,323 Contracts, Settlement Date March 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		3,323
Open futures contracts, settlement date		Mar. 14, 2012
Corn (7,105 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		7,105
Open futures contracts, settlement date		Dec. 14, 2012
Gold (2,611 Contracts, Settlement Date February 27, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		2,611
Open futures contracts, settlement date		Feb. 27, 2012
Heating Oil (5,738 Contracts, Settlement Date May 31, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		5,738
Open futures contracts, settlement date		May 31, 2012
Natural Gas (8,045 Contracts, Settlement Date September 26, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		8,045
Open futures contracts, settlement date		Sep. 26, 2012
RBOB Gasoline (6,652 Contracts, Settlement Date November 30, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		6,652
Open futures contracts, settlement date		Nov. 30, 2012
Red Wheat (3,574 Contracts, Settlement Date July 13, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		3,574
Open futures contracts, settlement date		Jul. 13, 2012
Red Wheat (399 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		399
Open futures contracts, settlement date		Dec. 14, 2012
Silver (666 Contracts, Settlement Date December 27, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		666
Open futures contracts, settlement date		Dec. 27, 2012
Soybeans (3,420 Contracts, Settlement Date November 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		3,420
Open futures contracts, settlement date		Nov. 14, 2012
Soybeans (1,967 Contracts, Settlement Date January 14, 2013) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		1,967
Open futures contracts, settlement date		Jan. 14, 2013
Sugar (11,967 Contracts, Settlement Date June 29, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		11,976
Open futures contracts, settlement date		Jun. 29, 2012
Wheat (3,448 Contracts, Settlement Date July 13, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		3,448
Open futures contracts, settlement date		Jul. 13, 2012
Wheat (1,034 Contracts, Settlement Date December 14, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		1,034
Open futures contracts, settlement date		Dec. 14, 2012
WTI Crude (7,568 Contracts, Settlement Date June 20, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		7,568
Open futures contracts, settlement date		Jun. 20, 2012
Zinc (4,819 Contracts, Settlement Date July 16, 2012) [Member]
Schedule of Investments [Line Items]
Open futures contracts, number of contracts		4,819
Open futures contracts, settlement date		Jul. 16, 2012

XML

Statements Of Financial Condition (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
United States Treasury Obligations,cost	$ 5,786,204,357	$ 5,311,724,492
General shares, issued	40	40
General shares, outstanding	40	40
Shares issued	233,400,000	203,800,000
Shares outstanding	233,400,000	203,800,000

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Share Purchases And Redemptions

9 Months Ended

Sep. 30, 2012

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

Summary of Share Transactions for the Three Months Ended September 30, 2012 and 2011

and the Nine Months Ended September 30, 2012 and 2011

	Shares Three Months Ended						Paid in Capital Three Months Ended						Shares Nine Months Ended						Paid in Capital Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Shares Sold		22,400,000			14,600,000		$	623,655,448		$	429,814,372			53,200,000			49,200,000		$	1,486,852,502		$	1,452,358,698
Shares Redeemed		(4,200,000	)		(11,800,000	)		(116,365,794	)		(333,914,708	)		(23,600,000	)		(24,800,000	)		(629,379,502	)		(714,432,470	)
Net Increase/ (Decrease)		18,200,000			2,800,000		$	507,289,654		$	95,899,664			29,600,000			24,400,000		$	857,473,000		$	737,926,228

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Document and Entity Information	9 Months Ended
	Sep. 30, 2012
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Trading Symbol	DBC
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	233,400,000

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Profit And Loss Allocations And Distributions

9 Months Ended

Sep. 30, 2012

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.

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Schedule Of Investments (Treasury Bills) (USD $)	Sep. 30, 2012	Dec. 31, 2011
U.S. Treasury Bills, 0.105% Due October 4, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	21.77%
Fair Value	$ 1,459,994,160
Face Value	1,460,000,000
U.S. Treasury Bills, 0.09% Due October 11, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	1.97%
Fair Value	132,498,278
Face Value	132,500,000
U.S. Treasury Bills, 0.08% Due October 18, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	4.13%
Fair Value	276,991,690
Face Value	277,000,000
U.S. Treasury Bills, 0.055% Due October 25, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	12.11%
Fair Value	812,269,945
Face Value	812,300,000
U.S. Treasury Bills, 0.1% Due November 1, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	8.54%
Fair Value	572,973,069
Face Value	573,000,000
U.S. Treasury Bills, 0.1% Due November 8, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	1.64%
Fair Value	109,991,860
Face Value	110,000,000
U.S. Treasury Bills, 0.11% Due November 15, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	1.67%
Fair Value	111,990,256
Face Value	112,000,000
U.S. Treasury Bills, 0.105% Due November 23, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	4.70%
Fair Value	314,966,295
Face Value	315,000,000
U.S. Treasury Bills, 0.105% Due November 29, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	5.28%
Fair Value	353,965,308
Face Value	354,000,000
U.S. Treasury Bills, 0.1% Due December 6, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	6.57%
Fair Value	440,939,583
Face Value	441,000,000
U.S. Treasury Bills, 0.1% Due December 13, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	7.69%
Fair Value	515,916,408
Face Value	516,000,000
U.S. Treasury Bills, 0.105% Due December 20, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	4.04%
Fair Value	270,951,762
Face Value	271,000,000
U.S. Treasury Bills, 0.11% Due December 27, 2012 [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	6.16%
Fair Value	412,907,900
Face Value	413,000,000
Total United States Treasury Obligations [Member]
Schedule of Investments [Line Items]
Percentage of Net Assets	86.27%	97.15%
Fair Value	5,786,356,514	5,311,719,979
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

9 Months Ended

Sep. 30, 2012

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™ (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”).

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 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 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 Fund does not employ leverage. As of September 30, 2012 and December 31, 2011, the Fund had $6,701,764,835 (or 99.78%) and $ 5,477,786,076 (or 99.80%), 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, $392,883,777 (or 5.86%) and $ 425,657,099 (or 7.77%), respectively, 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 September 30, 2012 and December 31, 2011. For additional information, please see the unaudited Schedule of Investments as of September 30, 2012 and the audited Schedule of Investments as of December 31, 2011 for details of the Fund’s portfolio holdings.

DBIQ™ is a trademark 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. The Fund and the Managing Owner have been licensed by the Index Sponsor to use the above noted trademark. Deutsche Bank AG London is an affiliate of the Fund and the Managing Owner.

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Organization

9 Months Ended

Sep. 30, 2012

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 31st. 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 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 three months ended September 30, 2012 and 2011 (hereinafter referred to as the “Three Months Ended September 30, 2012” and the “Three Months Ended September 30, 2011”, respectively) and the nine months ended September 30, 2012 and 2011 (hereinafter referred to as the “Nine Months Ended September 30, 2012” and the “Nine Months Ended September 30, 2011”, respectively).

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Assets And Liabilities Measured At Fair Value

	September 30, 2012		December 31, 2011
United States Treasury Obligations (Level 1)	$	5,786,356,514	$	5,311,719,979
Commodity Futures Contracts (Level 1)	$	491,359,456	$	(376,223,544	)

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Commitments And Contingencies

9 Months Ended

Sep. 30, 2012

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 September 30, 2012, 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

9 Months Ended

Sep. 30, 2012

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:

	September 30, 2012		December 31, 2011
United States Treasury Obligations (Level 1)	$	5,786,356,514	$	5,311,719,979
Commodity Futures Contracts (Level 1)	$	491,359,456	$	(376,223,544	)

There were no Level 2 or Level 3 holdings as of September 30, 2012 and December 31, 2011.

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Service Providers And Related Party Agreements

9 Months Ended

Sep. 30, 2012

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 Three Months Ended September 30, 2012 and 2011, the Fund incurred Management Fees of $13,320,547 and $13,105,781, respectively. Management Fees incurred during the Nine Months Ended September 30, 2012 and 2011 by the Fund were $38,825,617 and $38,205,824, respectively. As of September 30, 2012 and December 31, 2011, Management Fees payable to the Managing Owner were $9,102,007 and $3,900,692, respectively.

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 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 Three Months Ended September 30, 2012 and 2011, the Fund incurred brokerage fees of $303,699 and $3,485, respectively. Brokerage fees incurred during the Nine Months Ended September 30, 2012 and 2011 by the Fund were $988,074 and $1,124,873, respectively. As of September 30, 2012 and December 31, 2011, brokerage fees payable were $430 and $1,860, respectively.

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, 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 Distributors, Inc.

Through a marketing agreement between the Managing Owner and Invesco Distributors, Inc. (“Invesco Distributors”), an affiliate of Invesco PowerShares Capital Management LLC (“Invesco PowerShares”), the Managing Owner, on behalf of the Fund, has appointed Invesco Distributors as a marketing agent. Invesco 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 Distributors will not open or maintain customer accounts or handle orders for the Fund. Invesco 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

9 Months Ended

Sep. 30, 2012

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.

(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.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs. ASU No. 2011-04 requires additional disclosures regarding fair value measurements. Effective for fiscal years beginning after December 15, 2011 and for interim periods within those fiscal years, entities are required to disclose the following:

1) The amounts of any transfers between Level 1 and Level 2 and the reasons for those transfers, and

2) For Level 3 fair value measurements, quantitative information about the significant unobservable inputs used, a description of the entity’s valuation processes, and a narrative description of the sensitivity of the fair value measurement to changes in the unobservable inputs and the interrelationship between inputs.

There were no Level 2 or Level 3 holdings as of September 30, 2012 and December 31, 2011.

(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 September 30, 2012 and December 31, 2011 were holdings of $392,883,777 and $425,657,099, 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 September 30, 2012, the Fund had $424,045,865 of cash held by the Commodity Broker. As of December 31, 2011, the Fund had $542,289,641 of cash held by the Commodity Broker, of which $376,223,544 was on deposit to satisfy the Fund’s negative variation margin on open futures contracts. There were no cash equivalents held by the Fund as of September 30, 2012 and December 31, 2011.

(g) Receivable/ (Payable) for LME Contracts

The Fund trades aluminum, copper and zinc commodity future contracts on the London Metals Exchange (“LME”). For settlement of futures contracts traded on the LME, cash is not transferred until the settled futures contracts expire. As of September 30, 2012, the Fund had a receivable from the LME of $14,688,448 related to net realized gains on LME contracts. As of December 31, 2012, the Fund had a payable to the LME of $17,231,831 related to net realized losses on LME contracts.

Certain amounts reported in prior years have been reclassified to conform to the September 30, 2012 presentation. Net income and shareholders’ equity were not affected by these reclassifications.

(h) 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 2009.

(i) 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 September 30, 2012 and December 31, 2011, the futures contracts held by the Fund were in a net unrealized appreciation position of $491,359,456 and a net unrealized depreciation position of $376,223,544, respectively.

(j) 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.

(k) Brokerage Commissions and Fees

The Fund incurs all brokerage commissions, including applicable exchange fees, National Futures Association (“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 Three Months Ended September 30, 2012 and 2011 and the Nine Months Ended September 30, 2012 and 2011.

(l) 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.

(m) 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.

(n) 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 Three Months Ended September 30, 2012 and 2011 and the Nine Months Ended September 30, 2012 and 2011, the Fund did not incur such expenses.

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Financial Instrument Risk

9 Months Ended

Sep. 30, 2012

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

9 Months Ended

Sep. 30, 2012

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 (Detail) (USD $)	9 Months Ended
	Sep. 30, 2012 Vessel	Dec. 31, 2011	May 23, 2005
Capital contribution	$ 1,000	$ 1,000	$ 1,000
General shares	28.75	26.83	40
Fund offered common units to authorized participants in number of basket	1
Number of shares issued per basket	200,000

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Schedule Of Investments (Treasury Bills) (Parenthetical) (USD $)			9 Months Ended													12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 U.S. Treasury Bills, 0.105% Due October 4, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.09% Due October 11, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.08% Due October 18, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.055% Due October 25, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.1% Due November 1, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.1% Due November 8, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.11% Due November 15, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.105% Due November 23, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.105% Due November 29, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.1% Due December 6, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.1% Due December 13, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.105% Due December 20, 2012 [Member]	Sep. 30, 2012 U.S. Treasury Bills, 0.11% Due December 27, 2012 [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 Interest Rate			0.105%	0.09%	0.08%	0.055%	0.10%	0.10%	0.11%	0.105%	0.105%	0.10%	0.10%	0.105%	0.11%	0.015%	0.01%	0.025%	0.015%	0.01%	0.01%	0.015%	0.03%	0.005%	0.01%	0.005%	0.025%
Investment Maturity Date			Oct. 04, 2012	Oct. 11, 2012	Oct. 18, 2012	Oct. 25, 2012	Nov. 01, 2012	Nov. 08, 2012	Nov. 15, 2012	Nov. 23, 2012	Nov. 29, 2012	Dec. 06, 2012	Dec. 13, 2012	Dec. 20, 2012	Dec. 27, 2012	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
Cost, Total United States Treasury Obligations	$ 5,786,204,357	$ 5,311,724,492

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Statements Of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net Income (Loss)	$ 382,492,277	$ (412,434,530)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Cost of securities purchased	(17,711,121,495)	(17,564,337,576)
Proceeds from securities sold and matured	17,239,366,177	16,609,391,466
Net accretion of discount on United States Treasury Obligations	(2,708,200)	(3,433,895)
Net realized (gain) loss on United States Treasury Obligations	(16,347)	(37,252)
Net change in unrealized (gain) loss on United States Treasury Obligations and futures	(867,739,670)	1,038,456,475
Change in operating receivables and liabilities:
Management fee payable	5,201,315	683,772
Other assets		1,000
Receivable for LME contracts	(14,688,448)	5,640,738
Payable for LME contracts	(17,231,831)	4,308,763
Brokerage fee payable	(1,430)	335,849
Net cash provided by (used for) operating activities	(986,447,652)	(321,425,190)
Cash flows from financing activities:
Proceeds from sale of Shares	1,486,852,502	1,452,358,698
Change in Receivable for Shares issued	10,730,876
Redemption of Shares	(629,379,502)	(714,432,470)
Net cash provided by (used for) financing activities	868,203,876	737,926,228
Net change in cash held by broker	(118,243,776)	416,501,038
Cash held by broker at beginning of period	542,289,641	51,931,994
Cash held by broker at end of period	$ 424,045,865	$ 468,433,032

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Fund Investment Overview (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Deposit with Commodity Broker	$ 6,701,761,835	$ 5,477,786,076
Percentage of holdings of cash with Commodity Broker	99.78%	99.80%
Cash and United States Treasury Obligations deposited as margin in support of the Fund's long futures positions	$ 392,883,777	$ 425,657,099
Percentage of cash and United States Treasury Obligations deposited as margin in support of the Fund's long futures positions	5.86%	7.77%

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Net Asset Value And Financial Highlights

9 Months Ended

Sep. 30, 2012

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 Three Months Ended September 30, 2012 and 2011 and for the Nine Months Ended September 30, 2012 and 2011. 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 net investment income and total expense ratios have been annualized. 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.

	Three Months Ended						Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Net Asset Value
Net asset value per Share, beginning of period	$	25.76		$	29.16		$	26.83		$	27.57
Net realized and change in unrealized gain (loss) on United States Treasury Obligations, Futures		3.04			(3.18	)		2.08			(1.47	)
Net investment income (loss)		(0.06	)		(0.06	)		(0.17	)		(0.18	)
Net income (loss)		2.98			(3.24	)		1.91			(1.65	)
Net asset value per Share, end of period	$	28.74		$	25.92		$	28.74		$	25.92
Market value per Share, beginning of period	$	25.75		$	28.96		$	26.84		$	27.55
Market value per Share, end of period	$	28.68		$	25.75		$	28.68		$	25.75
Ratio to average Net Assets*
Net investment income (loss)		(0.79	)%		(0.81	)%		(0.81	)%		(0.80	)%
Total expenses		0.87	%		0.85	%		0.87	%		0.87	%
Total Return, at net asset value **		11.57	%		(11.11	)%		7.12	%		(5.98	)%
Total Return, at market value **		11.38	%		(11.08	)%		6.86	%		(6.53	)%

* Percentages are annualized.

** Percentages are not annualized.