Bob McCann, head of global wealth management at Merrill Lynch, is leaving less than a week after Bank of America officially took over the firm. McCann had run the group for five years, returning to Merrill after several months as vice chairman of Axa Financial. In his previous 21 years at the firm he worked for the investment bank, taking stints running equities and research.

Last October McCann was named head of the combined firm’s wealth management group, but not as overall head of wealth and asset management.