Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2015

Investments, All Other Investments [Abstract]

Net Unrealized Gains (Losses) on Open Contracts and Longest Contract Maturities

The net unrealized gains (losses) on open contracts, reported as a component of “Trading Equity” on the Statements of Financial Condition, and their longest contract maturities were as follows:

	Net Unrealized Gains (Losses) on Open Contracts								Longest Maturities
Date	Exchange-Traded			Off-Exchange-Traded		Total			Exchange-Traded		Off-Exchange-Traded
	$			$		$
Jun. 30, 2015		(3,289,435	)		131,547		(3,157,888	)		Jun. 2017		Sep. 2015
Dec. 31, 2014		5,296,681			495,854		5,792,535			Mar. 2019		Mar. 2015