He has held IBM for a couple of years, so that is not new, but Buffett did make recent headlines with a major increased stake in Apple. Four years later, in September 2015, IBM shares were at $137, a clear violation of his first rule. IBM was a curious pick for Buffett, who has famously avoided technology stocks over many decades of investing, Berkshire took on 63 million shares of IBM that year at a cost of about $11 billion. It continued to add to that position even as IBM shares fell and revenue declined quarter after quarter. Berkshire has continued to amass shares, with Apple representing 4.5% of its holdings as of the end of last year.

Source: Forbes February 24, 2017 16:13 UTC