American Tower (AMT)

Its portfolio spans the United States, Latin America, Europe, Africa, and parts of Asia, giving American Tower exposure to both mature wireless markets and regions where mobile data demand and network coverage continue to expand. The US remains its largest and most important market, with tens of thousands of towers and a customer base led by major national wireless carriers. Internationally, the company has significant tower holdings in markets such as Brazil, across Europe, and in several African countries.

American Tower’s business model is built around long-term leasing contracts. Multiple tenants can often place equipment on the same tower, which can increase returns on existing assets as carriers add capacity, deploy new spectrum, or upgrade networks. Revenue is therefore closely tied to carrier investment cycles, mobile data usage, and the ongoing development of 4G and 5G networks.

The company also owns and operates data center assets through its CoreSite segment, adding exposure to interconnection, cloud, and enterprise digital infrastructure demand in key US markets. This combination of tower real estate and data centers positions American Tower as a major participant in the broader communications infrastructure sector, while its customer concentration reflects the dominance of a small number of mobile carriers in most countries where it operates.