Wells Fargo & Company (WFC) has appointed Walter Dolhare ( pictured ) and Robert Engel as co-heads of Wells Fargo Securities (WFS), the company's capital markets, sales and trading, and investment banking business, which houses the structured products business. The appointments, which will become effective July 1, follows the recent promotion of Jonathan Weiss, the former head of WFS, to succeed David Carroll as head of wealth and investment management who is retiring from Wells Fargo. Weis