William Joseph Hornbuckle owns 224,748 shares of MGM, representing about 0.05% of all outstanding shares.Hornbuckle is president and chief executive officer (CEO) of MGM. He oversees all aspects of MGM's strategy, operations and hospitality and gaming development, and leads the company's expansion efforts. He was appointed president in 2012 and CEO in 2019, after previously holding additional executive leadership positions over two decades with MGM. Hornbuckle is a director of MGM and is chairman of the boards of MGM China Holdings and of CityCenter JV, which is a joint venture with Dubai World