On December 31, Berkshire Hathaway ( BRK.B )( BRK.A ) CEO Warren Buffett officially stepped down after 60 years at the helm. Buffett, who will remain on as Berkshire’s chairman, achieved a remarkable career track record, with Berkshire rising 5,502,284% compared toAnalyst’s Disclosure:I/we have a beneficial long position in the shares of BRK.B either through stock ownership, options, or other derivatives. I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it ( ...