Warren Buffett's company slashed its stake in BYD. Here's why that's surprising – and 5 possible explanations.

Warren Buffett's company slashed its stake in BYD. Here's why that's surprising – and 5 possible explanations.

Warren Buffett and Bill Gates (right) with BYD CEO Wang Chuanfu and Charlie Munger (left) in 2010.Jason Lee/Reuters <ul> <li>Warren Buffett's Berkshire Hathaway has sold more than 60% of its BYD sha… [+4554 chars]

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