American Tower CORP
$172.92-1.8%
+$17.4B
Net Activity
+29.71% total shares
Institutions Holding
1755
Popularity Rank
#184
Avg Weight
0.22%
Total Value
$74.1B
Market Cap
$81.1B
1755 institutions currently hold AMT, with 860 net buyers and 840 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
840
Net Buying Institutions
860
Top 5 by Value
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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 36/100).
AMT ranks #184 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
1755 institutions disclose a position in AMT, but none treat it as a major bet — even Cohen & Steers, Inc., its most concentrated holder, allocates just 3.6% of its own portfolio to it.
Capital World Investors has added to its AMT position for two straight quarters, increasing it by $331.1M to reach $1.1B today.
Franklin Resources Inc has trimmed its AMT position for two straight quarters, cutting it by $541.7M while still holding $395.6M.
AMT is down 1.8% today, but institutions show net buying of $17.4B this quarter — a divergence between today's price move and the underlying institutional flow.
AMT posted net income of $3.0B over the trailing twelve months, and currently trades at a P/E of 26.9.
+$9.0B
Total Buy Value
$5.0B
Total Sell Value
860
Net Buyers
840
Net Sellers
AMT
Q2 2026
Top 5 Institutional Movers
AMT does not currently show a 13F-and-insider convergence signal — its insider confidence score is 25/100, 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.
1
unique buyers
$501K
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Buy | Rajesh Kalathur | 2026-08-21 | $501K |
| Sell | Ruth T Dowling | 2026-07-29 | $194K |
| Sell | Robert Joseph Meyer | 2026-07-29 | $894K |
| Sell | Ruth T Dowling | 2026-07-28 | $116K |
| Buy | Rajesh Kalathur | 2026-03-10 | $495K |
| Sell | Vondran Steven O | 2026-03-04 | $337K |
| Sell | Vondran Steven O | 2026-03-04 | $2.83M |
| Sell | Vondran Steven O | 2026-03-04 | $3.14M |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Sell (Full) | Alan Armstrong Senate | 2026-03-27 | $1K–$15K |
| Sell (Full) | John W Hickenlooper Senate | 2023-05-10 | $100K–$250K |
| Sell (Full) | Thomas H Tuberville Senate | 2023-04-03 | $1K–$15K |
| Sell (Full) | Thomas H Tuberville Senate | 2023-04-03 | $1K–$15K |
2
Filings (90d)
$1.19M
Total Est. Value
7K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| ROBERT MEYER | 2026-07-29 | $894K |
| RUTH T DOWLING | 2026-07-28 | $299K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
American Tower Corporation issued a press release on July 28, 2026, announcing its financial results for the quarter ended June 30, 2026. The press release is attached as Exhibit 99.1 but is furnished, not filed, so it isn't subject to the legal liabilities of Section 18 of the Exchange Act.
View Full Filing (SEC EDGAR)03027X100, 03027X900, 03027X950, 03027x100, 87236Y108
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46
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Access AMT's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/AMTCLI
npx alphasmo stocks get AMT