American Tower
Leases multitenant communications sites worldwide and interconnected U.S. data-center capacity.
$176.00
After-hours close−0.24 (−0.14%)
At close$176.24(+1.19%)
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Breakdown13F · Form 4
Institutions 120.62%Insiders 0.12%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 465.96M · Float 464.52M · 99.7% free float
Institutions13F, as of Jun 30, 2026
1,803 holders · 562.02M shares · 177 new positions · 861 increased · 672 reduced · 184 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 45.80M | 9.83% | +842.4K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 30.44M | 6.53% | +75.4K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 27.85M | 5.98% | +255.7K | Aug 13, 2026 |
| State Street Corp | 22.07M | 4.74% | +631.6K | Aug 7, 2026 |
| Geode Capital Management, LLC | 13.84M | 2.97% | −94.7K | Aug 12, 2026 |
| Cohen & Steers, Inc. | 13.78M | 2.96% | +1.16M | Aug 14, 2026 |
| FMR LLC | 11.38M | 2.44% | +59.4K | Aug 13, 2026 |
| Morgan Stanley | 9.61M | 2.06% | +27.0K | Aug 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 9.20% | 43.05M | 13G | Feb 5, 2025 ↗ |
| Vanguard Capital Management | 7.56% | 35.25M | 13G | Apr 29, 2026 ↗ |
| Vanguard Portfolio Management | 5.94% | 27.72M | 13G | Apr 28, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Steven O. Vondran | director, officer: President and CEO | 108.9K | 0.02% | Mar 12, 2026 |
| Rodney M. Smith | officer: EVP, CFO & Treasurer | 92.5K | 0.02% | Mar 12, 2026 |
| Joann A. Reed | director | 62.9K | 0.01% | Mar 12, 2025 |
| Olivier Puech | officer: EVP & President, International | 38.0K | 0.01% | Mar 12, 2025 |
| Eugene M. Noel | officer: EVP & Chief Operating Officer | 34.5K | 0.01% | Mar 12, 2026 |
| Juan Font | officer: SVP, Pres. & CEO, CoreSite | 28.4K | 0.01% | Mar 12, 2026 |
| Ruth T. Dowling | officer: EVP, Chief Admin Ofr, GC & Sec | 27.7K | 0.01% | Jul 30, 2026 |
| Sanjay Goel | officer: EVP & President, Asia-Pacific | 25.4K | 0.01% | Mar 19, 2025 |
| Robert Joseph Meyer | officer: SVP & Advisor to the CFO | 21.4K | 0.00% | Jul 31, 2026 |
| Pamela D. A. Reeve | director | 21.1K | 0.00% | Jun 1, 2026 |
4 ten-percent owners hold 636.6K shares by Form 4, outside the officers-and-directors figure above · 25 people have not refiled in the last 18 months (1.63M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 21, 2026 | Rajesh Kalathurdirector | Purchase | 2,829 | $177.00 | 7,765 |
| Jul 29, 2026 | Robert Joseph Meyerofficer: SVP & Advisor to the CFO | Sale | 5,000 | $178.89 | 21,428 |
| Jul 29, 2026 | Ruth T. Dowlingofficer: EVP, Chief Admin Ofr, GC & Sec | Sale | 1,106 | $174.96 | 27,711 |
| Jul 28, 2026 | Ruth T. Dowlingofficer: EVP, Chief Admin Ofr, GC & Sec | Sale | 685 | $169.54 | 28,817 |
| Apr 29, 2026 | Ruth T. Dowlingofficer: EVP, Chief Admin Ofr, GC & Sec | Sale | 416 | $177.54 | 29,461 |
| Apr 28, 2026 | Ruth T. Dowlingofficer: EVP, Chief Admin Ofr, GC & Sec | Sale | 556 | $178.48 | 29,877 |
| Mar 10, 2026 | Rajesh Kalathurdirector | Purchase | 2,671 | $185.30 | 4,936 |
| Mar 4, 2026 | Ruth T. Dowlingofficer: EVP, Chief Admin Ofr, GC & Sec | Sale | 682 | $188.51 | 31,047 |
| Mar 4, 2026 | Steven O. Vondrandirector, officer: President and CEO | Sale · 3 lots | 33,482 | $188.46 | 105,374 |
| Mar 2, 2026 | Eugene M. Noelofficer: EVP & Chief Operating Officer | Sale · 4 lots | 41,209 | $191.05 | 29,592 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. Ro Khanna · CA17 | Purchase | $1,001 – $15,000 | Jun 5, 2026 | Jul 8, 2026 ↗ | |
| Rep. Ro Khanna · CA17 | Purchase | $1,001 – $15,000 | Jun 2, 2026 | Jul 8, 2026 ↗ | |
| Rep. Ro Khanna · CA17 | Purchase | $1,001 – $15,000 | May 1, 2026 | Jun 11, 2026 ↗ | |
| Rep. Dwight Evans · PA03 | Sale | $1,001 – $15,000 | May 11, 2026 | May 15, 2026 ↗ | |
| Rep. Rich McCormick | Sale | $1,001 – $15,000 | Apr 17, 2026 | May 13, 2026 ↗ |