Industry: Mexican telecommunications corporation. Consists of three main divisions, Comcast Cable (cable TV, telephony, Internet service provider), NBCUniversal (NBC and Telemundo TV channels, Universal Pictures movie studio), and Sky (European telecommunications company). It is the largest cable television and broadband operator in the United States and the largest pay-TV operator in the world with 52 million subscribers.
Revenue: $71.613 billion (2018)
Founder: Ralph J. Roberts and Julian A. Brodsky