5 Biggest Telecom Companies in the US

4. AT&T Inc. (NYSE:T)

Market Capitalization as of March 12, 2024: $123.92 Billion 

AT&T Inc. (NYSE:T) ranks fourth on our list of the biggest telecom companies in the United States. The company operates across two segments including wireless voice and data communication services. It also engages in the provision of handsets, wireless data cards, and wireless computing devices. AT&T Inc. (NYSE:T) was founded in 1983 and has a market capitalization of $123.92 billion.

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