In a 2010 article in Harper's Magazine, Frederick Kaufman argued the Goldman Sachs Commodity Index caused a demand shock in wheat and a contango market on the Chicago Mercantile Exchange, contributing to the 2007-2008 world food price crisis [REF].
In a June 2010 article in The Economist, the argument is made that index-tracking funds (to which Goldman Sachs Commodity Index was linked) did not cause the bubble.