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American Tower Corporation (AMT) is a financial services company in the property investment trusts industry, based in Boston, United States, with about 4,866 full-time employees.
Its largest business segment, Property - U.S. & Canada, brought in 49% of segment revenue in fiscal year 2025; United States was the largest region with 62%. Its market capitalization was $84.92 billion as of October 9, 2026.
Figures from company filings and market data; market data as of October 9, 2026.
S. data center facilities. American Tower Corporation was incorporated in 1995 in Delaware and is based in Massachusetts, Boston.
Property - U.S. & Canada, with $5.25 billion or 49% of segment revenue in fiscal year 2025. Next: Property - Latin America (15%) and Property - Africa & Apac (13%).
United States: 62% of revenue by region in fiscal year 2025, followed by Brazil (7%).
$84.92 billion as of October 9, 2026.
Listed companies of a similar size in the same industry (property investment trusts) include Welltower Inc. (WELL), Prologis, Inc. (PLD), Equinix, Inc. (EQIX), Simon Property Group, Inc. (SPG).