Colm Kelleher, co-president of institutional securities, will see his role expand to include responsibility for the Middle East, Europe and Asia outside of Japan, James Gormanâs message showed.
He is expected to relocate from New York to London to take on the extra duties in a move which many view as a reaffirmation of Morgan Stanleyâs commitment to London as a global business hub.
The new post holder, who previously worked as the bankâs chief finance officer, is to be responsible for overseeing global sales and trading.
Walid Chammah, his predecessor, will stay in London and remain the chairman of Morgan Stanley International working only with the most important clients.
Paul Taubman, Mr Kelleherâs co-head, is to stay in the US but manage this area of Morgan Stanleyâs business in Japan and Latin America.
Earlier in the week Jim Rosenthal, Morgan Stanleyâs head of corporate strategy, was appointed as the financial institutionâs new chief operating officer.
By Jim Ottewill