The 94-year-old investor is retiring as Berkshire Hathaway's CEO. He's built both a fortune and a reputation as "the nicest billionaire" — at a time when many other billionaires are widely criticized.
The billionaire investor, now 94, also said he would be resigning as CEO at the end of the year. He spoke at Berkshire Hathaway's annual shareholder meeting known as "Woodstock for Capitalists."