“…Applying this idea to recent developments in commodity futures markets, Brunetti and Reiffen (2011), Acharya, Lochstoer, and Ramadorai (forthcoming), Cheng, Kirilenko, and Xiong (2012), and Hamilton and Wu (forthcoming) proposed that the growing volume of commodity index investors could produce hedging price pressure on the buy side, with Hamilton and Wu (forthcoming) finding that the average compensation to the long position in oil futures contracts has decreased but become substantially more volatile since 2005. Etula (forthcoming), Acharya, Lochstoer, and Ramadorai (forthcoming), Danielsson, Shin, andZigrand (2011), andCheng, Kirilenko, andXiong (2012) have stressed the role of limited working capital on the part of potential arbitrageurs as the key factor determining how much the futures price might deviate from the expected future spot price.…”