Warren Buffett, chairman and chief executive officer of Berkshire Hathaway Inc., laughs while playing cards on the sidelines the Berkshire Hathaway annual shareholders meeting in Omaha, Nebraska, U.S., on Sunday, May 1, 2016. Dozens of Berkshire Hathaway subsidiaries will be showing off their products as Chief Executive Officer Warren Buffett hosts the company's annual meeting. Photographer: Daniel Acker/Bloomberg via Getty Images
