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Security record · archived quarter

AMT

American Tower Corporation · Real Estate · REIT - Specialty

178.57 +0.1% mkt cap $83.21B quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
20Tracked holders
+2Δ holders
41.47MShares held
$9.63BReported value
+2New positions
−0Exits
Rising Conviction score 49/100 How these are computed → Explain this at the Research Desk →

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

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
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
Holder count
Who holds it · Q3 2024
#ManagerSharesΔ sharesValueTheir weightHeld
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.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

Aug 21 Kalathur Rajesh

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

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q3 2024 · Methodology · Get this via the API