The derivatives exchanges with the tightest lock on trading are those that have their own clearing houses such as the CME and Eurex, since they can offer clients cheaper and swifter settlement.

• 那些拥有自己的清算所的衍生品交易所，例如芝加哥商品交易所和欧洲外汇交易所牢牢控制着衍生品交易。