Facebook, Inc. is an American online social media and social networking service company based in Menlo Park, California. It was founded by Mark Zuckerberg, along with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes. Type: Public Traded as: NASDAQ: fb FB (Class A), NASDAQ-100 component, S&P 100 component, S&P 500 component Industry: Social media, Advertising