Perhaps most important, ELX and CME are fighting over whether traders may move positions between exchanges – a change that would pry open CME’s tight grip on the market. The opportunities for CME may...

Perhaps most important, ELX and CME are fighting over whether traders may move positions between exchanges – a change that would pry open CME’s tight grip on the market. The opportunities for CME may be vast but they are also there for its rivals.