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 Corporate and Other. 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 Corporate and Other segment includes operations of other business interests, primarily of Comcast Spectacor. The company was founded by Ralph J. Roberts in 1963 and is headquartered in Philadelphia, PA.