Greg Maffei oversees the Liberty family of companies as they compete in the digital mobile era. Maffei serves as President and CEO of Liberty Media Corporation, which owns media and entertainment businesses, including subsidiaries Formula 1, SiriusXM and the Atlanta Braves, and an interest in Live Nation Entertainment. He is President and CEO of Liberty Broadband Corporation, which consists primarily of a 25% voting stake in Charter Communications, as well as President and CEO of GCI Liberty, whose principal assets consist of its subsidiary GCI and interests in Charter Communications and Liberty Broadband. Maffei also serves as Chairman and CEO of Liberty TripAdvisor, which holds a controlling interest in TripAdvisor. In addition, Maffei serves as Executive Chairman of Qurate Retail, Inc., which owns digital commerce businesses, including subsidiaries QVC, HSN, Zlily and the Cornerstone Brands. Maffei also serves as Chairman of the Liberty-related companies Live Nation Entertainment, SiriusXM and TripAdvisor, and as a Director of Charter Communications and Zillow. Prior to joining Liberty in 2005, Maffei served as Co-President of Oracle, Chairman and CEO of 360networks, and CFO of Microsoft.