Cathay Pacific is reciprocally one of the major shareholders of Air China. On 6 November 2017, Qatar Airways acquired a 9.6% shareholding of Cathay Pacific, becoming its 3rd largest shareholder. Cathay Pacific is the world's tenth largest airline measured in terms of sales, and fourteenth largest measured in terms of market capitalisation. In 2010, Cathay Pacific became the world's largest international cargo airline, along with main hub Hong Kong International Airport as the world's busiest airport in terms of cargo traffic. It is one of the founding members of the Oneworld alliance. Cathay Pacific's subsidiary Cathay Dragon is an affiliate member of
Cathay City Hong Kong International Airport. Cathay City has of space and is one of the largest corporate head office facilities in Asia. Cathay City includes three 10-storey office buildings, a 23-storey staff hotel, a flight training centre with a safety training school, a workshop and storage building, a leisure centre, and an airline stores building. The centre has a steel pedestrian bridge. The head office of Air Hong Kong, as of 2004, is located on the fourth floor of the South Tower of Cathay City. In February 2012 FlightSafety International and Gulfstream Aerospace, in a venture with Cathay Pacific, opened a