Facebook CEO Mark Zuckerberg has surpassed net worth of $100 billion, joining Amazon's Jeff Bezos and Microsoft's Bill Gates in the centibillionaire list, according to the Bloomberg Billionaires Index. Zuckerberg has gained about $22 billion this year. The 36-year old businessman's net worth went past $100 billion for the first time Thursday after Facebook hit a record high on report of the release of Instagram's TikTok competitor Reels. Zuckerberg attended Harvard University, where he launched the Facebook social networking service from his dormitory room on February 4, 2004, with college roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes.