Two big investors said Wednesday they had added to their investments in General Motors Co.
Billionaire investor Warren Buffet's investment arm, Berkshire Hathaway Inc., acquired another 5 million shares in GM raising his stake in the company to 15 million shares in the quarter ending Sept. 30.
And David Einhorn, who runs Greenlight Capital hedge fund, boosted his stake in GM to 21.6 million shares from 17.4 million as of June 30.
On Wednesday, GM stock closed down 2.6 percent, or $0.65 a share, to $24.17 before the purchases were disclosed in government documents. After the filings to the Securities and Exchange Commission, GM stock rose in after hours trading to $24.64, up $0.47, or 2 percent.
GM Chairman and CEO Dan Akerson in May described Buffett as a "wise investor" with a "track record to prove it."
Berkshire Hathaway becomes one of the 15th-largest investors in GM.