Mustard Seed Investor logo: a sprouting mustard seedMustard Seed Investor
← All stocks

American Tower Corp

Held by 13 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide 03027X100 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide

Download report
In plain English: 13 of the investors we track own this stock. In the latest quarter, 3 of them bought more of it and 10 sold some or all of theirs. That tells you what they did last quarter — not what the stock will do next.

Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer

Managers holding
13
-1 vs last quarter (like-for-like)
Total value held
$2.51B
Across tracked managers
Average weight ⓘOn average, how big this stock is in the portfolios that own it (its share of each manager's reported portfolio value).
0.2%
Of each manager's book
QoQ value ⓘLike-for-like: only managers that filed both quarters are compared, so a manager filing late (or confidentially) does not look like buying or selling. Includes price changes.
-$97.20M
-6.2% vs last quarter
Net shares bought
-95.5K
Est. net flow -$15.83M
Quarter activity
3 bought · 10 sold
0 new · 1 sold out

Tracked capital in this stock

Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).

Chart: Tracked capital in this stock

Aggregate buying and selling

Net share change reported each quarter

Chart: Aggregate buying and selling

Who owns AMT?

🔒 The 'who added and who trimmed' chart is a Plus feature

You're viewing the Free plan. Upgrade to unlock The 'who added and who trimmed' chart — every paid plan starts with a 7-day free trial, and you can cancel in two clicks.

See plans & upgrade Sign in

Who owns AMT? — Q2 2026

Holders ranked by position size, with each one's quarter-over-quarter change.

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

# Manager Fund Shares Value ↓ % of their portfolio QoQ Δ shares Δ shares % Est. Δ value ⓘChange in shares × this quarter's price
1 Norges Bank Norges Bank Investment Management 6.37M $1.04B 0.1% — — — —
2 Israel Englander Millennium Management 2.19M $358.28M 0.2% Added +1.2M +114.5% +$191.21M
3 Barrow Hanley Barrow Hanley Mewhinney & Strauss 2.06M $336.50M 1.0% Added +471.6K +29.7% +$77.14M
4 Ken Griffin Citadel Advisors 1.37M $224.30M 0.1% Added +494.5K +56.4% +$80.89M
5 David Shaw D.E. Shaw & Co. 1.03M $168.22M 0.1% Reduced -103.2K -9.1% -$16.89M
6 Steve Cohen Point72 Asset Management 853.67K $139.63M 0.2% Reduced -351.6K -29.2% -$57.52M
7 Ken Fisher Fisher Asset Management 828.63K $135.54M 0.0% Reduced -907.8K -52.3% -$148.49M
8 Two Sigma Two Sigma Investments 431.85K $70.64M 0.1% Reduced -795.0K -64.8% -$130.04M
9 Chris Davis Davis Selected Advisers 63.25K $10.35M 0.0% Reduced -1.4K -2.1% -$224.09K
10 Baillie Gifford Baillie Gifford & Co 45.88K $7.50M 0.0% Reduced -4.1K -8.3% -$678.16K
11 Ray Dalio Bridgewater Associates 35.92K $5.88M 0.0% Reduced -21.0K -36.9% -$3.43M
12 Chuck Akre Akre Capital Management 29.25K $4.79M 0.1% Reduced -21.5K -42.4% -$3.52M
13 Mario Gabelli GAMCO Investors 23.39K $3.83M 0.0% Reduced -1.2K -4.8% -$194.65K

Sold out completely this quarter

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

Manager Fund Shares sold Value last quarter ↓
Ron Baron Baron Capital (BAMCO) -23.7K $4.09M

Politician trades

Politician trades in AMT

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

Politician Date Ticker Asset Type Reported range ⓘThe dollar range the politician reported. Exact amounts are not disclosed. Est. size ⓘOur estimate only: the midpoint of the reported range. Owner Account ⓘSubholding Of: the account the trade was in, as named on the report (e.g. an IRA or a brokerage account). The same stock bought on the same day in different accounts is a separate trade in each account. Filed ↑ Filing delay ⓘDays between the trade and the report. Over 45 days is late under the STOCK Act. Source
Pete Sessions Politician Dec 28, 2023 AMT American Tower Corporation (AMT) [ST] Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Spouse Trust One Jan 24, 2024 27 days PTR ↗
Ro Khanna Politician Mar 1, 2024 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Apr 5, 2024 35 days PTR ↗
Ro Khanna Politician Aug 2, 2024 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Sep 6, 2024 35 days PTR ↗
Ro Khanna Politician Oct 14, 2024 AMT AMERICAN TOWER CORPORATION cMN scanned Sale (partial) $15,001 - $50,000 Est. $32,500 (midpoint of reported range $15,001–$50,000) — — Nov 8, 2024 25 days PTR ↗
Ro Khanna Politician Nov 15, 2024 AMT TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Dec 5, 2024 20 days PTR ↗
Ro Khanna Politician Nov 12, 2024 AMT AMERICAN TOWER CORPORATION CMN scanned Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Dec 5, 2024 23 days PTR ↗
Ro Khanna Politician Dec 18, 2024 AMT AMERICAN TOWER CORPORATION CMIN scanned Sale (partial) $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Jan 8, 2025 21 days PTR ↗
Ro Khanna Politician Dec 16, 2024 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Spouse — Jan 8, 2025 23 days PTR ↗
Ro Khanna Politician Jan 22, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Feb 6, 2025 15 days PTR ↗
Julie Johnson Politician Jan 15, 2025 AMT American Tower Corporation (AMT) [ST] Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Joint Merrill Lynch Tax Efficient Core Feb 12, 2025 28 days PTR ↗
Ro Khanna Politician Feb 25, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Sale (partial) $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Mar 6, 2025 9 days PTR ↗
Ro Khanna Politician Feb 19, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Sale (partial) $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Mar 6, 2025 15 days PTR ↗
Ro Khanna Politician Mar 12, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Apr 10, 2025 29 days PTR ↗
Dwight Evans Politician Apr 3, 2025 AMT American Tower Corporation (AMT) [ST] Sale (partial) $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self CETERA Apr 17, 2025 14 days PTR ↗
Robert P. Bresnahan, Jr. Politician Apr 8, 2025 AMT American Tower Corporation (AMT) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self JP Morgan Brokerage Account May 8, 2025 30 days PTR ↗
Ro Khanna Politician Apr 4, 2025 AMT AMERICAN TOWER CORP NEW COM scanned Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — May 12, 2025 38 days PTR ↗
Ro Khanna Politician Apr 4, 2025 AMT AMERICAN TOWER CORP NEW COM scanned Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — May 12, 2025 38 days PTR ↗
Jefferson Shreve Politician May 12, 2025 AMT American Tower Corporation (AMT) [ST] Sale $15,001 - $50,000 Est. $32,500 (midpoint of reported range $15,001–$50,000) Self CRT - Standard Unit Trust Jun 22, 2025 41 days PTR ↗
Ritchie Torres Politician Sep 26, 2024 AMT American Tower Corporation (AMT) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self — Aug 20, 2025 328 days Late PTR ↗
Ritchie Torres Politician Jul 11, 2025 AMT American Tower Corporation (AMT) [ST] Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self — Aug 20, 2025 40 days PTR ↗
Ro Khanna Politician Mar 1, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Sep 9, 2025 192 days Late PTR ↗
Richard McCormick Politician Mar 15, 2023 AMT American Tower Corporation (AMT) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self Growth Partners Roth IRA Sep 17, 2025 917 days Late PTR ↗
Ro Khanna Politician Sep 5, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Sale (partial) — — — — Oct 3, 2025 28 days PTR ↗
Ro Khanna Politician Oct 7, 2025 AMT AMERICAN TOWER CORPORATION cMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Spouse — Nov 6, 2025 30 days PTR ↗
Ro Khanna Politician Nov 3, 2025 AMT AMERICAN TOWER CORPORATION CMN scanned Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) — — Dec 8, 2025 35 days PTR ↗