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Warren Buffett, chairman of Berkshire Hathaway Inc., talks to a young meeting attendee as he tours the exhibition floor prior to the Berkshire Hathaway shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 3, 2014. Yesterday, Berkshire Hathaway Inc. said first-quarter profit fell 3.8 percent on reduced earnings from Chairman Warren Buffett's derivatives wagers and underwriting at insurance businesses. Photographer: Daniel Acker/Bloomberg via Getty Images

Warren Buffett, chairman of Berkshire Hathaway Inc., talks to a young meeting attendee as he tours the exhibition floor prior to the Berkshire Hathaway shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 3, 2014. Yesterday, Berkshire Hathaway Inc. said first-quarter profit fell 3.8 percent on reduced earnings from Chairman Warren Buffett's derivatives wagers and underwriting at insurance businesses. Photographer: Daniel Acker/Bloomberg via Getty Images