Deutsche Börse faces boardroom unrest over concessions made by the German exchange in its attempt to woo European rival Euronext. The news came as the London Stock Exchange said it has already registered a record year.

Wolfgang Gerke, a member of the Frankfurt-based stock exchange group's supervisory board, said he was worried Deutsche Börse was "giving away too much too soon" as it sought to persuade Euronext of the virtues of an all-European merger, Bloomberg reports.