5 Biggest Infrastructure Companies in the US

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

Total revenue (in billions): $120.7

Market cap as at 11th April 2023 (in billions): $140.0

AT&T Inc. (NYSE:T) is one of the biggest telecom and mobile telephone services company not just in the U.S., but also the world. Recently, AT&T Inc. (NYSE:T) raised over $4.2 billion in an attempt to buy out wireless minorities.