Berkshire Hathaway Inc. shares traded near record highs at the beginning of Warren Buffett’s 50th year running the company. More recently, the stock has begun to sag.
Shares have slumped 5.2 percent since Dec. 31 and are headed for their first annual decline since 2011, even as Buffett pulled off one of the biggest coups of his career last month. By backing H.J. Heinz’s merger with Kraft Foods Group Inc., he now holds a stake valued at about $26 billion, more than twice what he paid.