Financial Highlights (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure Text Block Supplement [Abstract]

Financial Summary [Table Text Block]

The following financial highlights show the Trust’s financial performance of the Trading units by class for the three and nine month periods ended September 30, 2015, and 2014, respectively. Total return is calculated as the change in a theoretical beneficial owner’s investment over the entire period, and is not annualized. Total return is calculated based on the aggregate return of the Trust’s Trading units taken as a whole. As of September 30, 2015, no Class D units had been sold and, therefore, the Trust’s financial performance with respect to the class D units is not reflected below.

	Class A						Class B						Class C				Class A						Class B						Class C
	Three months ended						Three months ended						Three months ended				Nine months ended						Nine months ended						Nine months ended
	September 30,						September 30,						September 30,				September 30,						September 30,						September 30,
	2015			2014			2015			2014			2015		2014		2015			2014			2015			2014			2015		2014
Per share operating performance:
Net asset value of Trading units, beginning of period	$	59.48		$	61.92		$	67.75		$	69.13		$	-	$	-	$	67.49		$	71.25		$	76.11		$	78.74		$	-	$	-
Total Trading income (loss):
Trading gain (loss)		(0.33	)		4.10			(0.37	)		4.60			-		-		(4.01	)		(1.44	)		(4.60	)		(1.51	)		-		-
Investment income		-			-			-			-			-		-		0.01			0.03			0.01			0.04			-		-
Expenses		(1.85	)		(2.86	)		(1.78	)		(2.86	)		-		-		(6.19	)		(6.68	)		(5.92	)		(6.40	)		-		-
Trading income (loss)		(2.18	)		1.24			(2.15	)		1.74			-		-		(10.19	)		(8.09	)		(10.51	)		(7.87	)		-		-
Net asset value of Trading units, end of period	$	57.30		$	63.16		$	65.60		$	70.87		$	-	$	-	$	57.30		$	63.16		$	65.60		$	70.87		$	-	$	-
Total return:
Total return before incentive fees		(3.65	%)		2.86	%		(3.17	%)		3.22	%		-		-		(14.07	%)		(10.58	%)		(12.82	%)		(9.48	%)		-		-
Less incentive fee allocations		0.00	%		(0.86	%)		0.00	%		(0.70	%)		-		-		(1.02	%)		(0.77	%)		(0.98	%)		(0.52	%)		-		-
Total return		(3.65	%)		2.00	%		(3.17	%)		2.52	%		-		-		(15.09	%)		(11.35	%)		(13.80	%)		(10.00	%)		-		-
Ratios to average net assets:
Trading income (loss)		(3.76	%)		1.86	%		(3.29	%)		1.54	%		-		-		(15.96	%)		(14.49	%)		(14.49	%)		(17.47	%)		-		-
Expenses:
Expenses, less incentive fees		(3.20	%)		(3.88	%)		(2.69	%)		(3.55	%)		-		-		(8.86	%)		(9.81	%)		(7.29	%)		(8.32	%)		-		-
Incentive fees		0.00	%		(0.86	%)		0.00	%		(0.70	%)		-		-		(1.02	%)		(0.77	%)		(0.98	%)		(0.52	%)		-		-
Total expenses		(3.20	%)		(4.74	%)		(2.69	%)		(4.25	%)		-		-		(9.88	%)		(10.58	%)		(8.27	%)		(8.84	%)		-		-