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AMT

AMT 13F Holders & Ownership Data (1753 Funds)

American Tower CORP

-$2.7B

Net Activity

Institutions Holding

1753

Popularity Rank

#171

Avg Weight

0.24%

Total Value

$74.8B

Ownership Trend

1753 institutions currently hold AMT, with 855 net buyers and 802 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Neutral

Based on recent trading activity

Net Selling Institutions

802

Net Buying Institutions

855

Key Holders

Key Holders

Top 5 by Value

BI
BlackRock, Inc.
$7.8B
VC
Vanguard Capital Management LLC
$5.2B
VP
Vanguard Portfolio Management LLC
$4.8B
SS
State Street CORP
$3.7B
JC
Jpmorgan Chase & Co
$2.6B

Top 5 by Conviction

C&
Cohen & Steers, INC.
3.78%
MA
Magellan Asset Management Ltd
3.37%
LA
Lazard Asset Management LLC
2.08%
CC
Cantillon Capital Management LLC
1.85%
BH
Barrow Hanley Mewhinney & Strauss LLC
0.90%
View all 1753 holding institutions

Across its top 20 institutional holders, AMT's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 18/100).

Quarterly Activity

Recent Activity

+$43.0B

Total Buy Value

$27.4B

Total Sell Value

New buy129
Trim651
Add726
Sold out151

855

Net Buyers

802

Net Sellers

Smart Money Convergence

AMT does not currently show a 13F-and-insider convergence signal — its insider confidence score is 13/100, below the threshold this product uses to flag combined buying pressure.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Insider Trading (Form 4)

1390d confidence

1

unique buyers

$495K

buy value

data as of 2026-07-18

12-Month Buy/Sell Activity

Feb 25
Oct 25
BuySell
ActionInsiderTitleDateValue
BuyKalathur RajeshPresident, JD Financial & CIO2026-03-10$495K
SellVondran Steven OPresident and CEO2026-03-04$337K
SellVondran Steven OPresident and CEO2026-03-04$2.83M
SellVondran Steven OPresident and CEO2026-03-04$3.14M
SellDowling Ruth TEVP, Chief Admin Ofr, GC & Sec2026-03-04$129K
SellNoel Eugene MEVP & Chief Operating Officer2026-03-02$993K
SellNoel Eugene MEVP & Chief Operating Officer2026-03-02$1.40M
SellNoel Eugene MEVP & Chief Operating Officer2026-03-02$4.14M
View all insider trades →

Form 144 Pre-Sale Notices

No Form 144 planned sale filings in the last 90 days

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

03027X100, 03027X900, 03027X950, 03027x100, 87236Y108

FAQ

Who are the top institutional investors holding AMERICAN TOWER CORP (AMT)?
Major stakeholders currently include BlackRock, Inc. ($7.8B), Vanguard Capital Management LLC ($5.2B), Vanguard Portfolio Management LLC ($4.8B). Based on the latest 13F filings, there are a total of 1753 tracked investment funds and institutions maintaining positions in AMT.
What is the overall institutional sentiment toward AMT recently?
Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $2.7B, driven by 855 managers accumulating shares while 802 reduced their exposure.
Which institutions have been selling or reducing their AMT positions?
In the latest period, 651 funds trimmed their holdings, and 151 managers completely exited their positions. The aggregate reported sell value was $27.4B.
Are there any notable investors adding AMT to their portfolios?
Yes, buying activity remains notable. 129 institutions opened new positions in {ticker}, and 726 existing holders added to their shares. The total reported buy value for the quarter amounted to $43.0B.

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Institutions Holding

1,656

Total reported value

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Total reported value

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O

Realty Income CORP

Institutions Holding

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Total reported value

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997 institutions currently hold both AMT and this stock

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Trending Institutional Adds

The most-added stocks by 13F institutions this quarter

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Total reported value

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Institutions Holding

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Total reported value

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