FILE - In this May 2, 2009 file photo, Warren Buffett, CEO of Berkshire Hathaway, waves to shareholders prior to the annual Berkshire Hathaway shareholders meeting in Omaha, Neb. Buffett’s 82nd birthday on Thursday, Aug, 30, 2012, gave Berkshire Hathaway shareholders reason to celebrate another year of his leadership, but it also reminded investors to worry about who will run the evolving company after Buffett is gone. (AP Photo/Nati Harnik, File)