Mark Zuckerberg has a really big bank account. Oh wait, no he doesn't. Nevermind, it's back again. Our 10th-place finisher in the tech sector is Mark Zuckerberg, whose fortunes largely ride a roller coaster called the Facebook Stock Price. But among the overall list of the astoundingly wealthy, his paltry $13.3 billion only gets him to 66th place on the Forbes list. Aside from running things at Facebook, Zuckerberg has made some major contributions to educational causes, and also has dipped his toe in the political king-making arena by hosting a fundraiser for New Jersey Governor Chris Christie last month.