Paul Allen
Paul Gardner Allen (born January 21, 1953) is an American inventor, investor and philanthropist, best known as the co-founder, with Bill Gates, of Microsoft Corporation. As of March 2013, he was estimated to be the 53rd-richest person in the world, with an estimated wealth of $15 billion. He is the founder and chairman of Vulcan Inc., which manages his various business and philanthropic efforts. Allen also has a multi-billion dollar investment portfolio including technology companies, real estate holdings, and stakes in other technology, media, and content companies. Allen also owns two professional sports teams, the Seattle Seahawks, and the Portland Trail Blazers.