Investing legend Warren Buffett wants to come clean: He started trimming Berkshire Hathaway's Apple stake too early, a call that cost the firm billions in stock upside. "I sold it too soon," Buffett told CNBC in his first interview since retiring as Berkshire CEO. "But, I bought it even sooner, so." Berkshire started buying Apple shares in 2016, and its position eventually swell to more than $170 billion at its peak in 2023. It was then that the firm started trimming. Across 2003 and 2004,