"akin to letting casino owners who take book on NFL games during the week also coach all the teams on Sundays". Unauthorized trades by Goldman Sachs trader Matthew Marshall Taylor Former Goldman Sachs trader Matthew Marshall Taylor was convicted of hiding $8.3 billion worth of unauthorized trades involving derivatives on the S&P 500 index by making "multiple false entries" into a Goldman trading system, with the objective of protecting his year-end bonus of $1.5 million. When Goldman Sachs management uncovered the trades, Taylor was immediately fired. The trades cost the company $118 million, which Taylor was ordered to repay. In 2013, Taylor plead guilty to charges and was sentenced to 9 months in prison in addition to the monetary damages. Goldman Sachs Commodity Index and the 2005-2008 Food Bubble Frederick Kaufman, a contributing editor of Harper's Magazine, argued in a 2010 article that Goldman's creation of the Goldman Sachs Commodity Index (now the S&P GSCI) helped passive investors such as pension funds, mutual funds and others engage in food price speculation by betting on financial products based on the commodity index. These financial products disturbed the normal relationship between supply and demand, making prices more volatile and defeating the price stabilization mechanism of the futures exchange. A June 2010 article in The Economist defended commodity investors and oil index-tracking funds, citing a report by the Organisation for Economic Co-operation and Development that found that commodities without futures markets and ignored by index-tracking funds also saw price rises during the period. Aluminum price and supply In a July 2013 article, David Kocieniewski, a journalist with The New York Times accused Goldman Sachs and other Wall Street firms of "capitalizing on loosened federal regulations" to manipulate "a variety of commodities markets", particularly aluminum, citing "financial records, regulatory documents, and interviews with people involved in the activities". After Goldman Sachs purchased aluminum warehousing company Metro International in 2010, the wait of warehouse customers for delivery of aluminum supplies to their factories – to make beer cans, home siding, and other products – went from an average of 6 weeks to more than 16 months, "according to industry records". "Aluminum industry analysts say that the lengthy delays at Metro International after Goldman took over are a major reason the premium on all aluminum sold in the spot market has doubled since 2010." The price increase has cost "American consumers more than $5 billion" from