David Sokol, a possible successor to Warren Buffett (BRK.A), resigns. In his letter, Buffett...

|By:, SA News Editor

David Sokol, a possible successor to Warren Buffett (BRK.A), resigns. In his letter, Buffett mentions two facts: 1) Sokol's desire to build a family business. 2) Sokol's ownership of Lubrizol (LZ) shares, which is now being bought by Berkshire Hathaway.