Filed Pursuant to Rule 424(b)(3)

Registration No. 333-155800

June 2011 Performance Update

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

The Frontier Fund Class 2 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.

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

The Frontier Fund Class 2 Original	June 30, 2011 MTD	June 30, 2011 YTD		NAV / Unit
Balanced Series-2	-2.48%	0.35%	$	160.02
Balanced Series-2a	-2.61%	-0.23%	$	133.35
Berkeley/Graham/Tiverton Series-2	-3.32%	-7.37%	$	122.02
Currency Series-2	-0.23%	-4.08%	$	91.54
Long/Short Commodity Series-2	-5.80%	7.46%	$	164.69
Winton/Graham Series-2	-3.67%	-3.57%	$	138.90
Winton Series-2	-3.24%	-0.69%	$	152.92
Long Only Commodity Series-2	-3.32%	0.74%	$	104.48
Managed Futures Index Series-2	-5.32%	-11.00%	$	115.43

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 June 30, 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—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	4,479,569.39
Unrealized trading gain/(loss)		(5,702,487.50	)
Less: commissions		(97,091.75	)
Less: FCM fees		(24,425.03	)
Foreign currency gain/(loss)		(76,783.45	)
Interest income		16,466.30
Total Income		(1,404,752.04	)
EXPENSES
Management fees		46,158.28
Incentive fees		277,271.69
Total Expenses		323,429.97
Net Income (Loss)	$	(1,728,182.01	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		429,926.09891		$	70,543,044.16			164.08
Current month additions		—			—
Current month redemptions		(7,652.55373	)		(1,243,596.62	)
Net Income (loss) for current month					(1,728,182.01	)
Net Asset Value, end of current month		422,273.54518		$	67,571,265.53			160.02
Monthly rate of return								-2.48%

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 2

THE FRONTIER FUND BALANCED SERIES—2a

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	224,398.44
Unrealized trading gain/(loss)		(283,662.95	)
Less: commissions		(4,779.55	)
Less: FCM fees		(1,199.78	)
Foreign currency gain/(loss)		(3,827.29	)
Interest income		3,270.49
Total Income		(65,800.64	)
EXPENSES
Trading Fee		7,017.42
Management fees		2,261.33
Incentive fees		13,805.92
Total Expenses		23,084.67
Net Income (Loss)	$	(88,885.31	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		25,657.60344		$	3,513,097.03			136.92
Current month additions		—			—
Current month redemptions		(1,137.50989	)		(154,424.22	)
Net Income (loss) for current month					(88,885.31	)
Net Asset Value, end of current month		24,520.09355		$	3,269,787.50			133.35
Monthly rate of return								-2.61	%

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 2a

THE FRONTIER FUND BERKELEY/GRAHAM/TIVERTON SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	(156,147.09	)
Unrealized trading gain/(loss)		(7,050.91	)
Less: commissions		(4,829.23	)
Less: FCM fees		(2,218.62	)
Foreign currency gain/(loss)		620.24
Interest income		881.18
Total Income		(168,744.43	)
EXPENSES
Management fees		17,721.14
Incentive fees		—
Total Expenses		17,721.14
Net Income (Loss)	$	(186,465.57	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		47,003.97607		$	5,932,358.58			126.21
Current month additions		—			—
Current month redemptions		(4,274.02073	)		(531,838.26	)
Net Income (loss) for current month					(186,465.57	)
Net Asset Value, end of current month		42,729.95534		$	5,214,054.75			122.02
Monthly rate of return								-3.32%

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 2

THE FRONTIER FUND CURRENCY SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	(24,148.29	)
Unrealized trading gain/(loss)		3,392.25
Net change in inter-series payables		28,403.02
Less: FCM fees		(4,873.64	)
Interest income		5,875.86
Total Income		8,649.20
EXPENSES
Management fees		8,928.27
Incentive fees		—
Total Expenses		8,928.27
Net Income (Loss)	$	(279.07	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		1,459.01422		$	133,860.07			91.75
Current month additions		—			—
Current month redemptions		(120.44481	)		(11,054.40	)
Net Income (loss) for current month					(279.07	)
Net Asset Value, end of current month		1,338.56941		$	122,526.60			91.54
Monthly rate of return								-0.23%

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 2

THE FRONTIER FUND LONG/SHORT COMMODITY SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	11,646,872.41
Unrealized trading gain/(loss)		(12,335,741.22	)
Less: commissions		(7,044.22	)
Less: FCM fees		(4,746.93	)
Foreign currency gain/(loss)		(1,022.19	)
Interest income		21,342.85
Total Income		(680,339.30	)
EXPENSES
Management fees		56,147.56
Incentive fees		(16,878.80	)
Total Expenses		39,268.76
Net Income (Loss)	$	(719,608.06	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		73,692.48401		$	12,883,151.14			174.82
Current month additions		—			—
Current month redemptions		(6,529.50873	)		(1,102,485.76	)
Net Income (loss) for current month					(719,608.06	)
Net Asset Value, end of current month		67,162.97528		$	11,061,057.32			164.69
Monthly rate of return								-5.80%

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 2

THE FRONTIER FUND WINTON/GRAHAM SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	(42,109.40	)
Unrealized trading gain/(loss)		(205,001.25	)
Less: commissions		(4,005.80	)
Less: FCM fees		(2,803.52	)
Foreign currency gain/(loss)		725.00
Interest income		2,221.36
Total Income		(250,973.61	)
EXPENSES
Management fees		19,343.26
Incentive fees		(5,582.64	)
Total Expenses		13,760.62
Net Income (Loss)	$	(264,734.23	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		50,330.68555		$	7,257,006.07			144.19
Current month additions		—			—
Current month redemptions		(401.00226	)		(57,273.67	)
Net Income (loss) for current month					(264,734.23	)
Net Asset Value, end of current month		49,929.68329		$	6,934,998.17			138.90
Monthly rate of return								-3.67%

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 2

THE FRONTIER FUND WINTON SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	13,594.11
Unrealized trading gain/(loss)		(375,249.59	)
Less: commissions		(1,035.64	)
Less: FCM fees		(4,387.69	)
Foreign currency gain/(loss)		221.68
Interest income		7,239.89
Total Income		(359,617.24	)
EXPENSES
Management fees		21,991.45
Incentive fees		(14,279.56	)
Total Expenses		7,711.89
Net Income (Loss)	$	(367,329.13	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		72,276.30801		$	11,422,508.26			158.04
Current month additions		-—			—
Current month redemptions		(1,291.98625	)		(200,000.00	)
Net Income (loss) for current month					(367,329.13	)
Net Asset Value, end of current month		70,984.32176		$	10,855,179.13			152.92
Monthly rate of return								-3.24%

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 2

THE FRONTIER FUND LONG ONLY COMMODITY SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	(10,509.53	)
Unrealized trading gain/(loss)		(9.41	)
Less: commissions		—
Less: FCM fees		(117.84	)
Foreign currency gain/(loss)		—
Interest income		533.57
Total Income		(10,103.21	)
EXPENSES
Management fees		332.74
Incentive fees		—
Total Expenses		332.74
Net Income (Loss)	$	(10,435.95	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		2,891.28419		$	312,445.60			108.06
Current month additions		—			—
Current month redemptions		(96.34885	)		(10,000.00	)
Net Income (loss) for current month					(10,435.95	)
Net Asset Value, end of current month		2,794.93534		$	292,009.65			104.48
Monthly rate of return								-3.32%

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 2

THE FRONTIER FUND MANAGED FUTURES INDEX SERIES—2

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

June 30, 2011

(Unaudited)

	Current Period
INCOME
Realized trading gain/(loss)	$	(92,114.04	)
Unrealized trading gain/(loss)		(64,415.07	)
Less: commissions		(1,086.55	)
Less: FCM fees		(1,178.26	)
Foreign currency gain/(loss)		273.34
Interest income		4,921.10
Total Income		(153,599.48	)
EXPENSES
Management fees		6,007.10
Incentive fees		—
Total Expenses		6,007.10
Net Income (Loss)	$	(159,606.58	)

STATEMENT OF CHANGES IN NET ASSET VALUE

	Units			Dollars		$’s per unit
Net Asset Value, end of prior month	25,014.97293		$	3,049,516.87		121.91
Current month additions	—			—
Current month redemptions	(577.07804	)		(69,134.50	)
Net Income (loss) for current month				(159,606.58	)
Net Asset Value, end of current month	24,437.89489		$	2,820,775.79		115.43
Monthly rate of return						-5.32%

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

1660 Lincoln Street, Suite 100

Denver, Colorado 80264

On Behalf of the Frontier Fund—Managed Futures Index Series 2