Warren Buffett will step down as chief executive of Berkshire Hathaway on December 31, ending a six-decade run both as an investor and philanthropist that reshaped global investing​Warren Buffett will step down as chief executive of Berkshire Hathaway on December 31, ending a six-decade run both as an investor and philanthropist that reshaped global investing ​Latest News [ SOBAN NEWS: International and National ]