US regulator casts doubt over CME/Nymex merger

The suggestion that exchanges should be split from their clearinghouses is a potential major challenge to the business models of both the Chicago Mercantile Exchange and the Nymex. Both Nymex and the CME have their own respective clearing capabilities.

Despite the fact that the Justice Department approved CME's takeover of the Chicago Board of Trade last year, it is now voicing concern that exchange-owned clearing houses may help guarantee trades for those exchanges.

It follows a review

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