It’s Warren Buffett’s 87th birthday: Here’s what he and 5 other billionaires were like as kids

He’s also always been an investor. Buffett, who grew up in Omaha, Neb., bought his first stock when he was 11, in the summer of 1942, he tells PBS NewsHour. (That means now, at 86, the CEO of Berkshire Hathaway has been in the market for 75 years.) When he was...