Who wants to be a CEO? Well, if you do, call up British banking giant Lloyds ( NYS: LYG ). The bank has been leaderless for the past three weeks as Antonio Horta-Osorio is away recovering from stress and exhaustion -- this only eight months after he assumed the mantle of CEO at the London bank. Lloyds is still hopeful that Osorio will return by the end of the year, but in case he doesn't, it has announced that David L. Roberts will take over as interim CEO from the start of next year. Investors, naturally, weren't really excited over any of this news, and shares plunged to a two-and-a-half-year low. Lloyds behind the 8 ball Osorio gained recognition as a man who could mastermind a turnaround and reverse the fortunes of struggling banks. Before arriving at Lloyds, Osorio won acclaim for amalgamating a number of ailing British banks under the U.K. wing of Spain's Banco Santander ( NYS: STD ) and scripting their turnaround.