Warren Buffett’s last day as Berkshire CEO puts focus back on rare asset [https://www.thestreet.com/.image/t_share/MjIwMjUzNjA5ODU2NjA4MTA5/gettyimages-1141569419.jpg] Warren Buffett’s last day as Berkshire CEO puts focus back on rare asset Warren Buffett makes way for Greg Abel to take over as Berkshire Hathaway CEO. [https://www.thestreet.com/crypto/markets/warren-buffetts-last-day-berkshire-ceo-rare-asset]