“ Tell me who your heroes are, and I'll tell you who you’ll turn out to be. ” Warren Buffett, Chairman and CEO of Berkshire Hathaway We cannot begin our letter this week without acknowledging the imminent end of an era.   Last month, Warren Buffett announced that he would be stepping down as CEO of Berkshire Hathaway at the end of the year. He will likely be replaced by Greg Abel, who is currently chairman and CEO of Berkshire Hathaway subsidiary, Berkshire Hathaway Energy.