Four exchanges - the Chicago Mercantile Exchange (CME), IntercontinentalExchange, Liffe and Eurex - say they intend to clear single-name contracts this year.

• 四家交易所---芝加哥商品交易所，美国洲际交易所，伦敦国际金融期货期权交易所和欧洲期货交易所称它们今年打算对单名合约进行清算。