American Tower Corp (AMT)
Who owns American Tower Corp (AMT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.7% of the shares are freely tradable; institutional investors hold 96.7%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 13.69 | 63,757,586 | +0.2 | 12/31/2025 |
| BlackRock Inc | 9.65 | 44,954,137 | +2.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.52 | 30,362,380 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.92 | 27,596,159 | +0.0 | 03/31/2026 |
| State Street Corp | 4.60 | 21,434,609 | +2.1 | 03/31/2026 |
| JPMorgan Chase & Co | 3.25 | 15,128,367 | +5.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.99 | 13,933,628 | +3.2 | 03/31/2026 |
| Cohen & Steers Inc | 2.71 | 12,619,866 | +1.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Real Estate Index Investor | 3.73 | 17,367,869 | -0.3 | 04/30/2026 |
| Vanguard Total Stock Mkt Idx Inv | 3.19 | 14,853,010 | +0.3 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 29. Jul 2026 | Meyer Robert Joseph | SVP & Advisor to the CFO | Sell | 5,000 | 178.89 | 894,450 |
| 29. Jul 2026 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 1,106 | 174.96 | 193,506 |
| 28. Jul 2026 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 685 | 169.54 | 116,135 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.