The Chicago Mercantile Exchange looks set to win the support of shareholders of rival futures market Chicago Board of Trade when they meet today to vote on the proposed merger between the pair, after CME raised its bid for a third time on Friday.

The increase of 7% to $11.9bn (€8.7bn) was the latest attempt by the CME to persuade CBOT share owners to back its bid over a rival offer from the IntercontinentalExchange. The new terms offer CBOT 36% of the combined company, up from 35% in the previous agreement.