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GAO-09-285R January 30, 2009
Until mid-2008, prices for a broad range of physical commodities, from crude oil to crops such as wheat, had increased dramatically for several years--raising concerns and leading to a debate over the possible causes. Some market participants and observers have attributed the price increases to fundamental economic factors related to supply and demand. Others have suggested that the price increases resulted from speculation in the futures contracts by hedge funds and investors in commodity indexes. Like stock indexes, commodity indexes track the composite price of a basket of long futures positions in physical commodities. The indexes' investment strategy is passive, remaining the same regardless of whether prices are falling, rising, or flat. Two commonly referenced...
