Buffett says Berkshire buying own stock, more Apple

Warren Buffett, the billionaire chairman of Berkshire Hathaway Inc , on Thursday said the conglomerate bought back its own stock for the first time since 2012 and added to its already huge stake in Apple Inc ."I don't know when to buy stocks, but I know whether to buy stocks," Buffett, celebrating his 88th birthday, said on CNBC.Berkshire has more than 90 businesses in the insurance, energy, food and retail, industrial and other sectors, and invests in companies such as Apple, Wells Fargo &