Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Financial Instruments [Abstract]

Net Unrealized Gain (Loss) 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, 2012		(3,092,436	)		(925,341	)		(4,017,777	)	Sep. 2014	Sep. 2012
Dec. 31, 2011		(1,240,461	)		1,330,410			89,949		Sep. 2013	Mar. 2012