AMT
American Tower Corporation · Real Estate · REIT - Specialty
Momentum inputs (comparable managers):
holder breadth +11.1% ·
share flow +1.6% ·
net new positions +10.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 180 | 0 | 331.46M | $54.32B | +3 | −2 |
| Q1 2026 | 182 | +1 | 326.66M | $56.34B | +5 | −5 |
| Q4 2025 | 180 | +1 | 365.57M | $64.21B | +2 | — |
| Q3 2025 | 25 | 0 | 222.75M | $42.86B | +2 | −3 |
| Q2 2025 | 23 | -1 | 191.62M | $42.38B | — | −1 |
| Q1 2025 | 21 | 0 | 69.31M | $15.07B | +1 | −1 |
| Q4 2024 | 21 | 0 | 64.21M | $11.80B | +2 | −2 |
| Q3 2024 | 20 | +2 | 41.47M | $9.63B | +2 | — |
| Q2 2024 | 18 | — | 40.82M | $7.93B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 2 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 3 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 4 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 5 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 6 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 7 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 8 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 9 | Wellington Management ✦ | 11.38M | -3.8% | $2.65B | 0.5% | ▼ Trim | 2 | SEC ↗ |
| 10 | Geode Capital Management ✦ (passive) | 11.21M | +1.9% | $2.60B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 11 | Geode Capital Management ✦ (passive) | 11.21M | +1.9% | $2.60B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 6.49M | +17.6% | $1.51B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 13 | T. Rowe Price ✦ | 6.49M | +17.6% | $1.51B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 14 | T. Rowe Price ✦ | 6.49M | +17.6% | $1.51B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 15 | Norges Bank ✦ (passive) | 6.18M | +5.7% | $1.44B | 0.2% | ▲ Add | 2 | SEC ↗ |
| 16 | Capital World Investors ✦ | 1.89M | -6.2% | $439.10M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 17 | Fisher Asset Management ✦ | 1.73M | +3.1% | $402.69M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 18 | Arrowstreet Capital ✦ | 1.36M | +227.7% | $315.13M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 19 | Point72 Asset Management ✦ | 223.10K | -74.1% | $51.89M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 20 | Adage Capital Partners ✦ | 205.31K | -1.2% | $47.75M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 162.99K | +10.9% | $37.53M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 162.99K | +10.9% | $37.53M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 23 | AQR Capital Management ✦ | 162.99K | +10.9% | $37.53M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 162.99K | +10.9% | $37.53M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 162.99K | +10.9% | $37.53M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 26 | Citadel Advisors ✦ | 148.34K | +664.0% | $34.50M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Citadel Advisors ✦ | 148.34K | +664.0% | $34.50M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | Baillie Gifford ✦ | 118.33K | -25.0% | $27.52M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 29 | Baillie Gifford ✦ | 118.33K | -25.0% | $27.52M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 30 | Millennium Management ✦ | 110.16K | -75.2% | $25.62M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 31 | Gotham Asset Management ✦ | 58.63K | +16.5% | $13.64M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 32 | Markel Group ✦ | 51.91K | 0.0% | $12.07M | 0.1% | Held | 2 | SEC ↗ |
| 33 | Markel Group ✦ | 51.91K | 0.0% | $12.07M | 0.1% | Held | 2 | SEC ↗ |
| 34 | Marshall Wace ✦ | 47.56K | -89.7% | $11.06M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 35 | Renaissance Technologies ✦ | 44.80K | New | $10.42M | 0.0% | New | 1 | SEC ↗ |
| 36 | GAMCO Investors ✦ | 31.69K | -1.4% | $7.37M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 37 | Two Sigma Investments ✦ | 15.97K | -75.8% | $3.71M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | D. E. Shaw & Co. ✦ | 1.86K | New | $432,562 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $10.42M | 0.0% |
| D. E. Shaw & Co. | $432,562 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,737 holders, 416.18M shares, $67.33B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Director · 2.83K sh @ 177.00 · $500,733
Open-market sales (S)
No open-market insider sales in our coverage window.
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology