# AMERICAN TOWER CORP (AMT) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 03027X100
Page URL: https://superinvestorclub.com/stock/AMT
Last updated: 2026-08-29T13:48:03.046Z

## Summary

As of the most recent 13F filing period, AMERICAN TOWER CORP (AMT) is held by 7 tracked superinvestors with an aggregate position value of $300.3M representing 01612473632503592429254206820201913 shares.

## Top institutional holders (7)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [William Von Mueffling](https://superinvestorclub.com/manager/2284) | Cantillon Capital Management | 1612473 | $278.3M | 1.85% | 2026-03-31 |
| 2 | [Christopher Davis](https://superinvestorclub.com/manager/75) | Davis Selected Advisers | 63250 | $10.3M | 0.04% | 2026-06-30 |
| 3 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 35924 | $5.9M | 0.02% | 2026-06-30 |
| 4 | [Chuck Akre](https://superinvestorclub.com/manager/25) | Akre Capital Management | 29254 | $4.8M | 0.09% | 2026-06-30 |
| 5 | [FPA Queens Road](https://superinvestorclub.com/manager/97) | Bragg Financial Advisors | 2068 | $338,263 | 0.01% | 2026-06-30 |
| 6 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 2020 | $330,411 | 0.00% | 2026-06-30 |
| 7 | [Dan Sundheim (Mine & Arao)](https://superinvestorclub.com/manager/3261) | Mine & Arao Wealth Creation & Management | 1913 | $312,878 | 0.11% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 1 holders, $222,837 aggregate, 01149 shares
- 2023-09-30: 1 holders, $7.4M aggregate, 044780 shares
- 2023-12-31: 2 holders, $12.8M aggregate, 0581901149 shares
- 2024-03-31: 5 holders, $1.25B aggregate, 06197825666805191012021188 shares
- 2024-06-30: 4 holders, $1.20B aggregate, 0613430751910114976070 shares
- 2024-09-30: 4 holders, $1.44B aggregate, 0605253275940519102020 shares
- 2024-12-31: 8 holders, $1.21B aggregate, 05503413897340895304892325277202620201931 shares
- 2025-03-31: 9 holders, $1.19B aggregate, 025891921889190838796889404832126305318220201994 shares
- 2025-06-30: 9 holders, $1.26B aggregate, 02797125183585191524991650280863467290520602003 shares
- 2025-09-30: 8 holders, $459.4M aggregate, 01815816442843656702967028353303120111221 shares
- 2025-12-31: 7 holders, $398.4M aggregate, 0183052525526786281639702895020201893 shares
- 2026-03-31: 7 holders, $311.2M aggregate, 016124736462056914507721451220201903 shares

## Recent congressional trades (30)

- 2026-05-11: Dwight Evans (Democrat-PA) sale $1,001 - $15,000
- 2026-04-17: Richard Dean Dr McCormick (R-GA) sale $1,001 - $15,000
- 2025-11-19: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-11-10: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-11-03: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-07: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-01: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-07-11: Ritchie John Torres (D-NY) sale $1,001 - $15,000
- 2025-07-11: Ritchie Torres (Democrat-NY) sale $1,001 - $15,000
- 2025-07-02: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-05-12: Jefferson Shreve (Republican-IN) sale $15,001 - $50,000
- 2025-04-09: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-04-08: Rob Bresnahan (Republican-PA) purchase $1,001 - $15,000
- 2025-04-04: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-04-03: Dwight Evans (Democrat-PA) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "AMERICAN TOWER CORP (AMT) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/AMT), aggregating SEC 13F, Form 4, and congressional disclosures."