FILE - In this May 6, 2013 file photo, Warren Buffett smiles during a television interview in Omaha, Neb. Buffett released a positive annual letter Saturday, March 1, 2014. He told investors in the Omaha, Neb., based conglomerate that most of Berkshire’s 80-odd subsidiaries had a good year last year. Buffett says Berkshire Hathaway shareholders should be confident in the company’s prospects, even though the firm’s results lagged behind the S&P 500 last year. (AP Photo/Nati Harnik, File)