View Post CNBC Warren Buffett Surprises Teen Cancer Patient Live on CNBC By Chris Ariens on Aug. 1, 2014 - 9:25 AM Tre Grinner is 17 years old. When he grows up he wants to be an investment banker. Right now, he’s battling Hodgkin’s Lymphoma. Through the Make-A-Wish Foundation, Grinner has been working as an intern at Goldman Sachs ...