AMERICAN TOWER CORP (AMT) Institutional Ownership and Insiders Activity

AMERICAN TOWER CORP (AMT) is widely held by institutional investors, with 5 tracked firms reporting positions valued at approximately $289.63M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Cantillon Capital Management is the largest disclosed holder, reporting approximately $278.28M in AMT holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Cantillon Capital Management representing the majority of disclosed value.