Warren Buffet Ups His Shares in GM by 67%

Warren Buffett's Berkshire Hathaway has upped its stake in General Motors.

CNBC reports that Berkshire  increased its GM shares by 67 percent, from 15 million to 25 million shares.

While Berkshire, the Omaha-based portfolio is one of the largest shareholders of GM stock, it only owns about 2 percent of total shares, according to the Detroit Free Press.  The value of Berkshire's holdings in GM stands at about $694 million.