Note 9 - Investing in Index Futures (iShares S&P Commodity-Indexed Investing Pool LLC [Member])

9 Months Ended

Sep. 30, 2013

iShares S&P Commodity-Indexed Investing Pool LLC [Member]

Note 9 - Investing in Index Futures [Line Items]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

9 - Investing in Index Futures

Substantially all of the Investing Pool’s assets are invested in Index Futures. The Index Futures’ settlement value at expiration is based on the value of S&P GSCI-ER at that time. Therefore, the value of the Investing Pool will fluctuate based upon the value of the S&P GSCI-ER and the prices of the commodities underlying the S&P GSCI-ER. The commodities markets have historically been extremely volatile. For the nine months ended September 30, 2013 and the year ended December 31, 2012, the average month-end notional amounts of open Index Futures were $1,140,268,847 and $1,293,502,033, respectively.

The following table shows the variation margin on open futures contracts, by risk exposure category, on the Statements of Financial Condition as of September 30, 2013 and December 31, 2012:

	Asset Derivatives	Fair Value		Liability Derivatives	Fair Value
September 30, 2013
Commodity contracts	Receivable for variation margin on open futures contracts	$	—	Payable for variation margin on open futures contracts	$	5,202,484
December 31, 2012
Commodity contracts	Receivable for variation margin on open futures contracts	$	2,942,400	Payable for variation margin on open futures contracts	$	—

The following table shows the effect of the futures contracts, by risk exposure category, on the Statements of Operations for the nine months ended September 30, 2013 and 2012:

Nine Months Ended September 30, 2013	Statements of Operations Location	Realized Gain (Loss)			Change in Unrealized Appreciation/Depreciation
Commodity contracts	Net realized loss on futures contracts	$	(7,724,790	)	$	—
	Net change in unrealized appreciation/depreciation on futures contracts		—			(10,361,782	)
Nine Months Ended September 30, 2012
Commodity contracts	Net realized loss on futures contracts	$	(9,755,259	)	$	—
	Net change in unrealized appreciation/depreciation on futures contracts		—			48,687,049