Total return is calculated based on the aggregate return of the Trust taken as a whole.

	Class A						Class B						Class A						Class B
	Three months ended						Three months ended						Nine months ended						Nine months ended
	September 30,						September 30,						September 30,						September 30,
	2012			2011			2012			2011			2012			2011			2012			2011
Per share operating performance:
Net asset value of Trading units, beginning of period	$	83.93		$	92.14		$	90.03		$	96.87		$	91.32		$	100.64		$	96.98		$	104.75
Total Trading income (loss):
Trading gain (loss)		(1.73	)		6.39			(1.87	)		6.73			(5.59	)		1.45			(5.98	)		2.28
Investment income		0.10			0.29			0.11			0.30			0.32			0.51			0.34			0.56
Expenses		(2.04	)		(2.53	)		(1.75	)		(2.16	)		(5.79	)		(6.31	)		(4.82	)		(5.85	)
Trading income (loss)		(3.67	)		4.15			(3.51	)		4.87			(11.06	)		(4.35	)		(10.46	)		(3.01	)
Net asset value of Trading units, end of period	$	80.26		$	96.29		$	86.52		$	101.74		$	80.26		$	96.29		$	86.52		$	101.74

Total return:
Total return before incentive fees		(4.48	)%		4.61	%		(4.00	)%		5.13	%		(12.18	)%		(3.96	)%		(10.85	)%		(2.54	)%
Less incentive fee allocations		(0.10	)%		(0.10	)%		(0.10	)%		(0.10	)%		(0.07	)%		(0.36	)%		(0.07	)%		(0.34	)%
Total return		(4.58	)%		4.51	%		(4.10	)%		5.03	%		(12.25	)%		(4.32	)%		(10.92	)%		(2.88	)%

Ratios to average net assets:
Trading income (loss)		(1.98	)%		4.43	%		(2.00	)%		4.94	%		(6.51	)%		(5.39	)%		(6.48	)%		(3.13	)%
Expenses:
Expenses, less incentive fees		(2.58	)%		(2.58	)%		(2.06	)%		(2.04	)%		(6.86	)%		(7.07	)%		(5.34	)%		(5.59	)%
Incentive fees		(0.10	)%		(0.10	)%		(0.10	)%		(0.10	)%		(0.07	)%		(0.36	)%		(0.07	)%		(0.34	)%
Total expenses		(2.68	)%		(2.68	)%		(2.16	)%		(2.14	)%		(6.93	)%		(7.43	)%		(5.41	)%		(5.93	)%