American Tower Corporation (AMT) Shareholders & Insider Trades
American Tower shareholders at a glance
The largest holder of American Tower stock is BlackRock Advisors LLC, with 35.5 million shares (7.62% of the company), worth about $6.24 billion as of September 25, 2026. The 10 largest holders together own 39.1%.
In Q2 2026, 1,828 institutional holdings reports listed shares worth $76.00 billion.
Insiders reported 67 transactions in the last two years: 14 sales worth $31.49 million and 2 purchases. The newest one on file is from April 29, 2026 (Dowling Ruth T, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through April 29, 2026.
American Tower Corporation
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest American Tower shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 35.5 million | 7.62% | $6.2B |
| Vanguard Capital Management LLC | 30.4 million | 6.53% | $5.3B |
| Vanguard Portfolio Management LLC | 27.9 million | 5.98% | $4.9B |
| State Street Corporation | 22.1 million | 4.74% | $3.9B |
| Geode Capital Management LLC | 13.8 million | 2.97% | $2.4B |
| Cohen & Steers Capital Management, Inc. | 13.8 million | 2.96% | $2.4B |
| Fidelity Management & Research Co. LLC | 11.4 million | 2.44% | $2.0B |
| Eaton Vance Management | 9.6 million | 2.06% | $1.7B |
| JPMorgan Investment Management, Inc. | 8.9 million | 1.90% | $1.6B |
| BlackRock Life Ltd. | 8.7 million | 1.87% | $1.5B |
As of September 25, 2026.
American Tower institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,828 | – | $76.0B |
| Q1 2026 | 1,841 | 432.0 million | $74.5B |
| Q4 2025 | 1,871 | 479.0 million | $77.5B |
| Q3 2025 | 1,901 | 446.0 million | $85.7B |
| Q2 2025 | 1,950 | 439.0 million | $97.0B |
| Q1 2025 | 1,933 | 439.0 million | $95.5B |
| Q4 2024 | 1,877 | 436.0 million | $80.1B |
| Q3 2024 | 1,931 | 435.0 million | $101.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
American Tower insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Dowling Ruth T | Apr 29, 2026 | Officer | Sale at price 177.54 - 178.48 per share. | $173,092 |
| Kalathur Rajesh | Mar 10, 2026 | Director | Purchase at price 185.30 per share. | $494,936 |
| Macnab Craig | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Hormats Robert D. | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Reeve Pamela D A | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Reilly Eugene F | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Tanner Bruce L | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Kalathur Rajesh | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Lieblein Grace D | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Ray Neville R. | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Chambliss Kelly C. | Mar 10, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Font Juan Hernandez | Mar 10, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 67 insider transactions in the last two years.
Questions and answers
Who owns the most American Tower stock?
BlackRock Advisors LLC, with 7.62% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.53%) and Vanguard Portfolio Management LLC (5.98%).
How many institutions own American Tower stock?
1,828 institutional holdings reports listed American Tower shares in Q2 2026 worth $76.00 billion.
Are American Tower insiders buying or selling the stock?
In the last two years insiders reported 14 sales and 2 purchases (67 transactions in all); the newest on file is from April 29, 2026.
