NOK vs AMT Comparison

Nokia is a networking equipment vendor focused primarily on supporting wireless networks and, to a growing extent, Internet Protocol and optical systems. The firm operates three segments. The mobile infrastructure segment sells equipment and software used to operate the core of carrier and enterprise wireless networks. Network infrastructure comprises IP, optical, and fixed-network equipment, including switching and routing equipment, optical components, and devices used in fiber-to-the-premises networks. The portfolio business comprises businesses considered noncore to Nokia in the future, including fixed wireless access customer premises equipment, enterprise campus edge, and microwave radio.

American Tower owns and operates about 150,000 wireless towers throughout the US, Asia, Latin America, Europe, and Africa. It also owns and/or operates 30 data centers in 11 US markets through its CoreSite segment. The company's customer base in the tower business is very concentrated, with most revenue in each market generated by the top three or four mobile carriers. The company operates 42,000 towers in the US, which accounted for about half of total revenue in 2025. Outside the US, American Tower operates about 47,000 towers in Latin America (dominated by Brazil), 33,000 towers in Europe, and 28,000 towers in Africa. American Tower operates as a REIT.