Black Monday for the markets as margins are squeezed into liquidation?
http://www.reuters.com/article/2011/...7A27Y020111103
http://www.zerohedge.com/news/cme-go...ial-everything
http://www.reuters.com/article/2011/...7A27Y020111103
http://www.zerohedge.com/news/cme-go...ial-everything