Morgan Stanley has given chief administrative officer Thomas Nides additional responsibility for operations and technology as part of a reshuffle tied to the imminent arrival of James Gorman as CEO.
Co-president Gorman is replacing John Mack as CEO of the bank on 1 January, with the latter staying on as chairman.
Nides has acted as CAO since 2005, in charge of human resources and talent management, government affairs, communications, marketing, community affairs and corporate services functions.
He will now take on additional responsibilities as the chief operating officer, including overseeing firm-wide operations and technology.
Jim Rosenthal, who has been head of technology and operations since last year, becomes COO of Morgan Stanley Smith Barney and head of corporate strategy.
Other changes see CFO and head of global capital markets, Colm Kelleher, and global head of investment banking, Paul Taubman, become co-presidents of institutional securities.
Kelleher is replaced as CFO by Ruth Porat, previously global head of the financial institutions group.