CURRENCY SERIES, a series of The Frontier Fund 424B3 Prospectus supplement

Filed Pursuant to Rule 424(b)(3)
Registration No. 333-155800

August 2011 Performance Update

The Frontier Fund Supplement Dated August 31, 2011 to Prospectus Dated April 30, 2011.

The Frontier Fund Class 1 Original

T H E    F R O N T I E R    F U N D ’ S    G O A L : To provide you – the investor – with a managed futures product that, over the long term, provides attractive returns, reduces volatility, and improves the overall performance of your investment portfolio.

August performance for the various Series of The Frontier Fund is detailed below:*

The Frontier Fund Class 1 Original	August 31, 2011	August 31, 2011		NAV /Unit
	MTD	YTD
Balanced Series-1	-5.60%	-7.97%	$	121.43
Balanced Series-1a	-5.74%	-8.73%	$	106.20
Berkeley/Graham/Tiverton Series-1	-1.77%	-9.89%	$	99.53
Currency Series-1	-3.31%	-9.77%	$	71.36
Long/Short Commodity Series-1	-1.33%	10.05%	$	146.06
Winton/Graham Series-1	-2.55%	-3.23%	$	115.96
Winton Series-1	1.86%	5.24%	$	142.12
Long Only Commodity Series-1	-0.10%	1.23%	$	95.26
Managed Futures Index Series-1	7.21%	-3.55%	$	113.77

Additional information, including monthly rates of return, concerning the aforementioned Series and the Trading Advisor(s) is contained in the Prospectus and the respective Series Appendix to the Prospectus.

* The above table sets forth the actual performance for the Class and Series as of August 31, 2011. Actual gross trading performance (gross realized and unrealized gain/loss before deduction for trading commissions and fees, management fees, any other expense, and before addition of interest income) is adjusted for the trading expenses, management fees, initial service fees, on-going service fees, and interest income of the applicable Series.

THIS INSERT MUST BE ACCOMPANIED OR PRECEDED BY THE CURRENT PROSPECTUS OF THE FRONTIER FUND

PAST PERFORMANCE IS NOT INDICATIVE OF FUTURE RESULTS

THE FRONTIER FUND BALANCED SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	(8,115,860.89	)
Unrealized trading gain/(loss)								(1,228,252.85	)
Less: commissions								(287,415.84	)
Less: FCM fees								(77,914.80	)
Foreign currency gain/(loss)								(53,837.62	)
Interest income								29,844.78
Total Income								(9,733,437.22	)
EXPENSES
Management fees								187,518.91
Incentive fees								935,366.87
Broker service fees								525,443.60
Total Expenses								1,648,329.38
Net Income (Loss)							$	(11,381,766.60	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		1,589,601.01406		$	204,475,182.91			128.63
Current month additions		431.04702			51,458.85
Current month redemptions		(31,996.01299	)		(3,947,288.48	)
Net Income (loss) for current month					(11,381,766.60	)
Net Asset Value, end of current month		1,558,036.04809		$	189,197,586.68			121.43
		Monthly rate of return						-5.60	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/     S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Balanced Series 1

THE FRONTIER FUND BALANCED SERIES - 1a

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	(137,804.37	)
Unrealized trading gain/(loss)								(23,403.73	)
Less: commissions								(4,989.15	)
Less: FCM fees								(1,352.37	)
Foreign currency gain/(loss)								(890.73	)
Interest income								3,694.16
Total Income								(164,746.19	)
EXPENSES
Trading Fee								8,242.97
Management fees								3,256.91
Incentive fees								16,164.84
Broker service fees								9,120.02
Total Expenses								36,784.74
Net Income (Loss)							$	(201,530.93	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		31,165.60532		$	3,511,201.76			112.66
Current month additions		3.99979			417.96
Current month redemptions		(0.15939	)		(17.79	)
Net Income (loss) for current month					(201,530.93	)
Net Asset Value, end of current month		31,169.44572		$	3,310,071.00			106.20
		Monthly rate of return						-5.74	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Balanced Series 1a

THE FRONTIER FUND BERKELEY/GRAHAM/TIVERTON SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	(317,885.88	)
Unrealized trading gain/(loss)								(152,007.97	)
Less: commissions								(25,342.62	)
Less: FCM fees								(18,543.09	)
Foreign currency gain/(loss)								5,003.05
Interest income								18,783.02
Total Income								(489,993.49	)
EXPENSES
Management fees								138,807.74
Incentive fees								—
Broker service fees								112,632.08
Total Expenses								251,439.82
Net Income (Loss)							$	(741,433.31	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		416,093.99774		$	42,161,943.07			101.33
Current month additions		48.57798			4,862.13
Current month redemptions		(5,921.81886	)		(594,589.88	)
Net Income (loss) for current month					(741,433.31	)
Net Asset Value, end of current month		410,220.75686		$	40,830,782.01			99.53
		Monthly rate of return						-1.77	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Berkeley/Graham/Tiverton Series 1

THE FRONTIER FUND CURRENCY SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	(20,496.28	)
Unrealized trading gain/(loss)								(125,712.01	)
Less: FCM fees								(2,075.06	)
Interest income								(9.95	)
Total Income								(148,293.30	)
EXPENSES
Management fees								0.06
Incentive fees								—
Broker service fees								12,675.91
Total Expenses								12,675.97
Net Income (Loss)							$	(160,969.27	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		65,581.03467		$	4,840,081.77			73.80
Current month additions		68.46467			4,935.15
Current month redemptions		(832.62425	)		(58,725.97	)
Net Income (loss) for current month					(160,969.27	)
Net Asset Value, end of current month		64,816.87509		$	4,625,321.68			71.36
		Monthly rate of return						-3.31	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Currency Series 1

THE FRONTIER FUND LONG/SHORT COMMODITY SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	1,435,178.96
Unrealized trading gain/(loss)								(1,589,176.99	)
Less: commissions								(8,076.76	)
Less: FCM fees								(5,447.11	)
Foreign currency gain/(loss)								(199.80	)
Interest income								22,098.03
Total Income								(145,623.67	)
EXPENSES
Management fees								64,108.26
Incentive fees								(28,425.70	)
Broker service fees								33,061.71
Total Expenses								68,744.27
Net Income (Loss)							$	(214,367.94	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		91,133.67720		$	13,490,810.97			148.03
Current month additions		28.69034			4,109.97
Current month redemptions		(13,430.39397	)		(1,926,684.50	)
Net Income (loss) for current month					(214,367.94	)
Net Asset Value, end of current month		77,731.97357		$	11,353,868.50			146.06
		Monthly rate of return						-1.33	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Long/Short Commodity Series 1

THE FRONTIER FUND WINTON/GRAHAM SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	477,113.63
Unrealized trading gain/(loss)								(1,011,488.98	)
Less: commissions								(11,722.22	)
Less: FCM fees								(13,243.63	)
Foreign currency gain/(loss)								(1,340.09	)
Interest income								19,419.44
Total Income								(541,261.85	)
EXPENSES
Management fees								84,155.76
Incentive fees								65,152.50
Broker service fees								80,252.21
Total Expenses								229,560.47
Net Income (Loss)							$	(770,822.32	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		255,960.58526		$	30,458,482.54			119.00
Current month additions		68.42373			7,950.29
Current month redemptions		(3,977.02944	)		(467,583.53	)
Net Income (loss) for current month					(770,822.32	)
Net Asset Value, end of current month		252,051.97955		$	29,228,026.98			115.96
		Monthly rate of return						-2.55	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Winton/Graham Series 1

THE FRONTIER FUND WINTON SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	2,093,383.20
Unrealized trading gain/(loss)								(990,265.53	)
Less: commissions								(3,253.35	)
Less: FCM fees								(17,944.74	)
Foreign currency gain/(loss)								5,149.94
Interest income								33,599.43
Total Income								1,120,668.95
EXPENSES
Management fees								89,281.61
Incentive fees								186,134.56
Broker service fees								109,127.26
Total Expenses								384,543.43
Net Income (Loss)							$	736,125.52
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		284,859.43583		$	39,747,027.60			139.53
Current month additions		139.28511			19,681.63
Current month redemptions		(1,402.85511	)		(197,714.26	)
Net Income (loss) for current month					736,125.52
Net Asset Value, end of current month		283,595.86583		$	40,305,120.49			142.12
		Monthly rate of return						1.86	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Winton Series 1

THE FRONTIER FUND LONG ONLY COMMODITY SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	(34,685.07	)
Unrealized trading gain/(loss)								652.20
Less: commissions								—
Less: FCM fees								(516.45	)
Foreign currency gain/(loss)								—
Interest income								2,623.61
Total Income								(31,925.71	)
EXPENSES
Management fees								1,512.34
Incentive fees								—
Broker service fees								2,102.58
Total Expenses								3,614.92
Net Income (Loss)							$	(35,540.63	)
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		16,637.37917		$	1,586,526.36			95.36
Current month additions		1.04554			95.78
Current month redemptions		(9,126.64479	)		(835,500.25	)
Net Income (loss) for current month					(35,540.63	)
Net Asset Value, end of current month		7,511.77992		$	715,581.26			95.26
		Monthly rate of return						-0.10	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Long Only Commodity Series 1

THE FRONTIER FUND MANAGED FUTURES INDEX SERIES - 1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

August 31, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	37,483.48
Unrealized trading gain/(loss)								(7,887.84	)
Less: commissions								(75.27	)
Less: FCM fees								(179.24	)
Foreign currency gain/(loss)								226.37
Interest income								691.67
Total Income								30,259.17
EXPENSES
Management fees								945.64
Incentive fees								—
Broker service fees								720.94
Total Expenses								1,666.58
Net Income (Loss)							$	28,592.59
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$'s per unit
Net Asset Value, end of prior month		3,536.18982		$	375,249.13			106.12
Current month additions		—			—
Current month redemptions		(287.30663	)		(34,208.64	)
Net Income (loss) for current month					28,592.59
Net Asset Value, end of current month		3,248.88319		$	369,633.08			113.77
		Monthly rate of return						7.21	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/    S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund - Managed Futures Index Series 1