Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Financial Instruments [Abstract]

Net Unrealized Gain on Open Contracts

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, 2013	4,807,679	(55,116)	4,752,563	Dec. 2016	Sep. 2013
Dec. 31, 2012	2,503,274	48,080	2,551,354	Mar. 2017	Mar. 2013