CME Group Raises Comex Gold Margins By 21.5%, Silver Margins By 15.6%

(Kitco News) - The CME Group is raising the margins needed to trade Comex gold and silver futures are being increased by 21.5% and 15.6%, respectively, and the change will take effect after the close of business on Monday, the exchange said late Friday in a press release.  http://www.kitco.com/reports/KitcoNews20110923DeC_CME.html