Comcast is a U.S.-based media and telecommunications company that sells broadband, video, wireless, and voice services to consumers and businesses under the Xfinity and Comcast Business brands. It also owns NBCUniversal (including NBC, Universal Pictures, and Peacock) and Sky, operating TV networks, film studios, and streaming in the U.S. and Europe. Founded in 1963 and headquartered in Philadelphia, it is publicly traded on Nasdaq (CMCSA).