Comcast Corporation Class A Common Stock, also called Comcast, is a media, entertainment, and communications company, which engages in the provision of video, Internet, and phone services. It operates through the following segments: Cable Communications, Cable Networks, Broadcast Television, Filmed Entertainment, Theme Parks and Sky. Read More The Cable Communications segment provides video, Internet, voice, and security and automation services under the Xfinity brand. The Cable Networks segment consists of national cable networks, regional sports, news networks, international cable networks, and cable television studio production operations. The Broadcast Television segment includes NBC and Telemundo broadcast networks. The Filmed Entertainment segment involves in the production, acquisition, marketing, and distribution of filmed entertainment. The Theme Parks segment consists of Universal theme parks in Orlando, Florida; Hollywood, California; and Osaka, Japan. The Sky segment Consists of the operations of Sky, one of Europe's entertainment companies, which primarily includes a direct-to-consumer business, providing video, high-speed internet, voice and wireless phone services, and a content business, operating entertainment networks, the Sky News broadcast network and Sky Sports networks. The company was founded by Ralph J. Roberts in 1963 and is headquartered in Philadelphia, PA. The listed name for CMCSA is Comcast Corporation Class A Common Stock.