Twenty-First Century Fox, Inc., doing business as 21st Century Fox, is an American multinational mass media corporation that is based in Midtown Manhattan, New York City. It is one of the two companies formed from the 2013 spin-off of the publishing assets of News Corporation, as founded by Rupert Murdoch in 1979. 21st Century Fox is the legal successor to News Corporation dealing primarily in the film and television industries. It is currently the United States' fourth-largest media conglomerate after The Walt Disney Company, Comcast and AT&T. The other company, the "new" News Corporation, holds Murdoch's print interests and other media assets in Australia (both owned by him and his family via a family trust with 39% interest in each). Murdoch is co-executive chairman, while his sons Lachlan Murdoch and James Murdoch are co-executive chairman and CEO, respectively. 21st Century Fox's assets include the Fox Entertainment Group—owners of the 20th Century Fox film studio (the company's partial namesake), Fox television network and Fox News channel, and a majority stake in National Geographic Partners—the commercial media arm of the National Geographic Society, among other assets. It also has significant foreign operations, including the pan-Asian pay channel operator Star TV. The company ranked No. 109 in the 2018 Fortune 500 list of the largest United States corporations by total revenue.On July 27, 2018, 21st Century Fox shareholders agreed to sell the company to The Walt Disney Company for $71.3 billion, following the spin-off of certain businesses. The sale will include key assets such as 20th Century Fox, FX Networks, National Geographic Partners, and its international networks. Assets such as the Fox television network, Fox Television Stations, and Fox News Channel will be spun off into a new company owned by current 21st Century Fox shareholders, being referred to internally as "New Fox", while the entirety of Sky plc (a British media group which Fox held a stake in) was acquired by Comcast following a bidding war with Fox. The purchase is expected to be completed in the first half of 2019.