Jon Corzine, former Wall Street titan, has been charged with mismanaging his former securities firm and misusing customers’ money. Corzine was the former head of MF Global, a Wall Street firm that collapsed in 2011. A civil lawsuit seeks to ban Corzine from trading in the futures market and demands he pay unspecified penalties. Forbes notes about $1.2 billion in customer funds vanished before its bankruptcy filing, mostly from risky bets on the debt of European countries.