GMF Capital

Gary Fegel became a billionaire running the aluminum business for Swiss commodities giant Glencore, which he joined in 2001 after earning his MBA from the University of St. Gallen. Fegel left Glencore in 2013 and since then he's been diversifying his fortune. He started his own investment firm GMF Capital, based in Zurich and New York, where he began focusing on global private equity and real estate deals.