Sphere Entertainment Co. is an American entertainment holding company based in New York City, and controlled by the family of Charles Dolan. It owns the Sphere event venue in Paradise, Nevada, in the Las Vegas Valley and New York-based regional sports network chain MSG Networks. The company was originally formed in 2020 as Madison Square Garden Entertainment, a spin-off of the non-sports assets of the Madison Square Garden Company. In 2023, Madison Square Garden Entertainment spun off its live events business as a new company under the same name, and the original MSG Entertainment was renamed Sphere Entertainment. Wikipedia