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Condensed Statements of Operations - USD ($)		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Gain (loss) on trading of commodity futures contracts:
Realized gain (loss) on closed futures contracts		$ 13,230,840	$ 5,625,960
Change in unrealized gain (loss) on open futures contracts		6,341,280	(1,175,940)
Dividend income		148,251	70,829
Interest income	[1]	372,893	249,033
ETF transaction fees		2,450	2,800
Total income (loss)		20,095,714	4,772,682
Expenses
General Partner management fees (Note 3)		166,045	175,198
Professional fees		8,630	67,167
Brokerage commissions		26,284	23,732
Directors' fees and insurance		4,299	3,364
Total expenses		205,258	269,461
Expense waiver (Note 3)		(6,004)	(59,168)
Net expenses		199,254	210,293
Net income (loss)		$ 19,896,460	$ 4,562,389
Net income (loss) per limited partnership share		$ 4.04	$ 0.95
Net income (loss) per weighted average limited partnership share		$ 3.99	$ 0.88
Weighted average limited partnership shares outstanding		4,987,222	5,158,889
[1] Interest income does not exceed paid in kind of 5%.

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