Jonathan Chevenix-Trench, chief operating officer of institutional securities at Morgan Stanley, has followed long-time ally and former co-president Zoe Cruz in leaving the firm. Cruz and fellow former co-president Bob Scully, who has been moved to a client-support role, have been replaced by Walid Chammah and James Gorman. Morgan Stanley has said that Chevenix-Trench will not be replaced. His responsibilities are to be split up and assumed by various senior executives.