Ken MacKenzie, head of U.S. equity derivatives trading at Citigroup Capital Markets, has left the firm. MacKenzie, who could not be reached, is not yet thought to have joined a competitor. Bret Engelkemier, head of index options trading in New York, has taken on MacKenzie's responsibilities in addition to his existing role. Engelkemier said he is excited by the new role and sees a lot of market potential to develop the firm's trading presence and sign new clients.
Engelkemier reports to Bryan Mazlish and Andrew Crane, co-heads of global equity derivatives trading, in New York and London respectively. Mazlish could not be reached by press time and Crane did not return calls.
