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

February 2011 Performance Update

The Frontier Fund Supplement Dated February 28, 2011 to the Prospectus Dated April 30, 2010 and the Supplement to the Prospectus Dated January 28, 2011.

The Frontier Fund Class 3

T H E     F RO 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.

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

The Frontier Fund Class 3	February 28, 2011	February 28, 2011	NAV / Unit
	MTD	YTD
Balanced Series-3a	0.33%	4.67%	$	139.90
Long Only Commodity Series-3	2.12%	3.63%	$	107.65
Long/Short Commodity Series-3	3.59%	11.22%	$	170.45
Managed Futures Index Series-3	1.60%	2.64%	$	130.08

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 February 28, 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 - 3a

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

February 28, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	127,066.64
Unrealized trading gain/(loss)								(98,377.96	)
Less: commissions								(3,964.96	)
Less: FCM fees								(1,316.98	)
Foreign currency gain/(loss)								(1,392.51	)
Interest income								1,961.99
Total Income								23,976.22
EXPENSES
Trading Fee								6,050.76
Management fees								1,960.62
Incentive fees								3,311.06
Total Expenses								11,322.44
Net Income (Loss)							$	12,653.78
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		27,384.03073		$	3,818,418.37			139.44
Current month additions		—			—
Current month redemptions		(18.33136	)		(2,552.55	)
Net Income (loss) for current month					12,653.78
Net Asset Value, end of current month		27,365.69937		$	3,828,519.60			139.90
		Monthly rate of return						0.33	%

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 - Balanced Series 3a

THE FRONTIER FUND LONG ONLY COMMODITY SERIES - 3

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

February 28, 2011

(Unaudited)

					Current Period
INCOME
Realized trading gain/(loss)					$	118.92
Unrealized trading gain/(loss)						(3.43	)
Less: commissions						—
Less: FCM fees						(2.23	)
Foreign currency gain/(loss)						—
Interest income						8.98
Total Income						122.24
EXPENSES
Management fees						5.33
Incentive fees						—
Total Expenses						5.33
Net Income (Loss)					$	116.91
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units		Dollars		$’s per unit
Net Asset Value, end of prior month		52.25380	$	5,508.33		105.41
Current month additions		—		—
Current month redemptions		—		—
Net Income (loss) for current month				116.91
Net Asset Value, end of current month		52.25380	$	5,625.24		107.65
		Monthly rate of return				2.12	%

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 3

THE FRONTIER FUND LONG/SHORT COMMODITY SERIES - 3

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

February 28, 2011

(Unaudited)

							Current Period
INCOME
Realized trading gain/(loss)							$	1,022,657.59
Unrealized trading gain/(loss)								(7,926.35	)
Less: commissions								(15,479.67	)
Less: FCM fees								(8,700.99	)
Foreign currency gain/(loss)								(499.33	)
Interest income								27,333.51
Total Income								1,017,384.76
EXPENSES
Management fees								85,269.30
Incentive fees								131,535.65
Total Expenses								216,804.95
Net Income (Loss)							$	800,579.81
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units			Dollars			$’s per unit
Net Asset Value, end of prior month		137,113.42514		$	22,560,817.39			164.54
Current month additions		1,307.52336			222,832.10
Current month redemptions		(5,820.94813	)		(982,581.32	)
Net Income (loss) for current month					800,579.81
Net Asset Value, end of current month		132,600.00037		$	22,601,647.98			170.45
		Monthly rate of return						3.59	%

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 3

THE FRONTIER FUND MANAGED FUTURES INDEX SERIES - 3

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

February 28, 2011

(Unaudited)

					Current Period
INCOME
Realized trading gain/(loss)					$	16,054.02
Unrealized trading gain/(loss)						(9,929.08	)
Less: commissions						(91.59	)
Less: FCM fees						(142.43	)
Foreign currency gain/(loss)						48.81
Interest income						536.17
Total Income						6,475.90
EXPENSES
Management fees						597.68
Incentive fees						—
Total Expenses						597.68
Net Income (Loss)					$	5,878.22
STATEMENT OF CHANGES IN NET ASSET VALUE
	Units		Dollars		$’s per unit
Net Asset Value, end of prior month		2,864.05159	$	366,665.94		128.02
Current month additions		—		—
Current month redemptions		—		—
Net Income (loss) for current month				5,878.22
Net Asset Value, end of current month		2,864.05159	$	372,544.16		130.08
		Monthly rate of return				1.60	%

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 - Managed Futures Index Series 3