F. William Engdahl (Mayo de 2008). «Perhaps 60% of today’s oil price is pure speculation». Consultado el 22 de febrero de 2010. «Goldman Sachs and Morgan Stanley today are the two leading energy trading firms in the United States. Citigroup and JP Morgan Chase are major players and fund numerous hedge funds as well who speculate... In June 2006, oil traded in futures markets at some $60 a barrel and the Senate investigation estimated that some $25 of that was due to pure financial speculation. One analyst estimated in August 2005 that US oil inventory levels suggested WTI crude prices should be around $25 a barrel, and not $60.»
