Warner Media, LLC is an American multinational mass media and entertainment conglomerate owned by AT&T and headquartered in New York City. It was originally formed in 1990 by Steve Ross and formerly known as Time Warner until it was acquired by AT&T in 2018. The company operates through three divisions: Warner Bros., HBO, and Turner Broadcasting System. Warner Bros. is a film and television production and distribution company, HBO is a premium cable and streaming service, and Turner Broadcasting System operates cable television networks such as CNN, TNT, and TBS. Warner Media also owns a 10% stake in streaming service Hulu.