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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
Rockwood Research
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AMT

AMERICAN TOWER CORP /MA/

Real Estate Investment Trusts · SIC 6798CIK 1053507Held by 13 tracked managersEDGAR filings ↗10-K/10-Q ↗

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13 managers · Q2 2026 13F
Broad Run Investment Management
Broad Run Investment ManagementPosition history →
2.6%
(0.5%)
Fairview Capital Investment Management
Fairview Capital Investment ManagementPosition history →
1.6%
(7.1%)
Motley Fool Asset Management
Motley Fool Asset ManagementPosition history →
0.52%
(3.5%)
Capital World Investors
Capital World InvestorsPosition history →
0.13%
+15.6%
Adage Capital Management
Adage Capital ManagementPosition history →
0.11%
+15.7%
Holocene Advisors
Holocene AdvisorsPosition history →
0.11%
+840.6%
Akre Capital Management
Chuck AkrePosition history →
0.09%
(42.4%)
Capital Research Global Investors
Capital Research Global InvestorsPosition history →
0.07%
(28.8%)
Davis Advisors
Christopher DavisPosition history →
0.04%
(2.1%)
Fuller & Thaler Asset Management
Fuller & Thaler Asset ManagementPosition history →
0.03%
+0.6%
Bridgewater Associates
Bridgewater AssociatesPosition history →
0.02%
(36.9%)
Alps Advisors
Alps AdvisorsPosition history →
0.02%
+2,308.8%
Mairs & Power
Mairs & PowerPosition history →
<0.01%
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Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.