CME Group, the US derivatives market, has extended its negotiation period with the New York Mercantile Exchange, the US energy and metals futures exchange, on a potential $11bn (â¬7.4bn) acquisition as US antitrust authorities have raised questions over futures exchanges controlling their clearing operations.
On January 28, the CME Group confirmed it was in preliminary discussions with Nymex about a potential acquisition and the two parties agreed to a 30-day exclusive negotiating period.
