The Walt Disney Company, commonly known as Disney, is an American diversified multinational mass media corporation headquartered at the Walt Disney Studios in Burbank, California. It is the world's second largest broadcasting and cable company in terms of revenue, after Comcast. Disney was founded on October 16, 1923, by Walt Disney and Roy O. Disney as the Disney Brothers Cartoon Studio, and established itself as a leader in the American animation industry before diversifying into live-action film production, television, and theme parks. The company also operated under the names The Walt Disney Studio, then Walt Disney Productions. Taking on its current name in 1986, it expanded its existing operations and also started divisions focused upon theater, radio, music, publishing, and online media. In addition, Disney has created new corporate divisions in order to market more mature content than is typically associated with its flagship family-oriented brands.