Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Investments, All Other Investments [Abstract]

Net Unrealized Gain (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
	$		$		$
Sep. 30, 2015		318,779		23,791		342,570		Dec. 2016		Dec. 2015
Dec. 31, 2014		774,574		518,669		1,293,243		Mar. 2016		Mar. 2015