KBW, the investment bank, has made two new staff appointments. It promoted managing director Chauncey Dewey to head of diversified financial investment banking and named Lauren Smith as managing director of its diversified finance group. In his new role, Dewey will work on a mix of transactions including mergers and acquisitions, initial public offerings and private equity deals. Smith moves to her new position after 12 years with the firm's research department where she was a managing director overseeing KBW's coverage of the US securities brokerage industry.