Warren Buffett bought about 120 million Apple shares in 2017

He informs that Berkshire's Apple stake was now worth about $17 bn, amounting to 133 mn shares

Warren Buffett, chairman and chief executive of Berkshire Hathaway Inc, told CNBC on Monday that his conglomerate had purchased about 120 million shares of Apple Inc. in 2017 and that US stocks were not in "bubble territory."

"Apple strikes me as having quite a sticky product and an enormously useful product to people that use it, not that I do," Buffett said. He said Berkshire's Apple stake, at 133 million shares, was worth about $17 billion and amounted to Berkshire's second-biggest holding.

Apple Chief Executive Tim Cook had done a "terrific job," Buffett said, but added he had not bought shares since