American Tower
AMT · NYSE
Who owns AMT
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 36.4% of AMT’s shares.
- Vanguard Capital Management, LLC6.5%
- BlackRock Institutional Trust Company, N.A.6.4%
- Vanguard Portfolio Management, LLC6.0%
- State Street Investment Management (US)4.7%
- Next 6 largest institutions12.8%
- All other shareholders63.6%
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Capital Management, LLC | 30.44M | 6.53% |
| BlackRock Institutional Trust Company, N.A. | 29.63M | 6.36% |
| Vanguard Portfolio Management, LLC | 27.85M | 5.98% |
| State Street Investment Management (US) | 22.07M | 4.74% |
| Geode Capital Management, L.L.C. | 13.84M | 2.97% |
| Cohen & Steers Capital Management, Inc. | 13.78M | 2.96% |
| Fidelity Management & Research Company LLC | 10.48M | 2.25% |
| Lazard Asset Management, L.L.C. | 8.40M | 1.80% |
| Capital World Investors | 6.55M | 1.41% |
| Norges Bank Investment Management (NBIM) | 6.37M | 1.37% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Real Estate Index Fund | 17.73M | 3.81% |
| Vanguard Total Stock Market Index Fund | 14.84M | 3.18% |
| Vanguard 500 Index Fund | 12.23M | 2.62% |
| iShares Core S&P 500 ETF | 6.21M | 1.33% |
| Statens Pensjonsfond Utland | 6.10M | 1.31% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $500.73K (1 trade) and sold $1.38M (5 trades) of AMT on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Blanchett Paul | Award | 16.30K | — |
| Kalathur Rajesh | Buy | 2.83K | $500.73K |
| Meyer Robert Joseph | Sale | 5.00K | $894.45K |
| Dowling Ruth T | Sale | 1.11K | $193.51K |
| Dowling Ruth T | Sale | 685 | $116.13K |
| Meyer Robert Joseph | Tax withholding | 153 | $28.69K |
| REEVE PAMELA D A | Gift | 810 | — |
| Dowling Ruth T | Sale | 416 | $73.86K |
| Dowling Ruth T | Sale | 556 | $99.23K |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Dwight EvansHouse | Sale | $1K–$15K | May 11, 2026 |
| Rich McCormickHouse | Sale | $1K–$15K | Apr 17, 2026 |
| Ro KhannaHouse | Purchase | $1K–$15K | Apr 13, 2026 |
| Alan ArmstrongSenator | Sale (Full) | $1K–$15K | Mar 27, 2026 |
| Ro KhannaHouse | Purchase | $1K–$15K | Nov 19, 2025 |
| Ro KhannaHouse | Sale | $1K–$15K | Nov 10, 2025 |
| Ro KhannaHouse | Purchase | $1K–$15K | Nov 3, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 7.35M
- Days to cover
- 2.43
- % of shares outstanding
- 1.58%
- Average daily volume
- 3.02M
- Change since last report
- +20.8%
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