American Tower Corp
AMT
166.18
+1.40
+0.85%
American Tower Corp
US · AMT
#273 by market cap
Listed 1970
166.18
+1.40
+0.85%
Live - 5344 symbols - heartbeat 111s ago
· 2026-10-08 08:27
Pre-market
166.18
0.00%
After-hours
166.18
0.00%
Overnight
166.18
0.00%
Reader sentiment
Are you bullish or bearish on AMT?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 12 in the most recent period (2026/Q3).
- Total institutional ownership (as a % of shares) was little changed.
Institutional ownership
- Held by institutions
- 96.42% -0.09pp
- Institutions
- 2,077 -12
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund78.65%
Public Company4.99%
Hedge Fund3.86%
Government Pension Fund3.19%
Private Company2.54%
Sovereign Wealth Fund1.50%
Family Office/Trust0.56%
Insurance Company0.47%
REIT0.19%
Other4.04%
Top holders as of 2026-06-30
BlackRock
9.83% · 45.80M sh
Vanguard Capital Management, LLC
7.10% · 33.09M sh
Vanguard Portfolio Management, LLC
5.98% · 27.85M sh
State Street Global Advisors
4.74% · 22.07M sh
Geode Capital Management, LLC
2.97% · 13.84M sh
Other
69.39%
Cohen & Steers Capital Management, Inc.
2.96% · 13.78M sh
Capital Research
2.29% · 10.68M sh
FMR
1.86% · 8.66M sh
Lazard Asset Management LLC
1.80% · 8.40M sh
UBS Asset Management
1.67% · 7.78M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 25 buys · 23 sells
| Name | Role | Stake |
|---|---|---|
| Thomas Bartlett | Chief Executive Officer | 0.08% |
| Rodney Smith | Chief Financial Officer | 0.02% |
| Steven Vondran | Executive VP & President of US Tower Division | 0.02% |
| JoAnn Reed | Independent Director | 0.01% |
| Olivier Puech | Executive VP & President of Latin America and EMEA | 0.01% |
| Juan Font | Senior Vice President | 0.01% |
| Ruth Dowling | Chief Administrative Officer | 0.01% |
| Sanjay Goel | Executive VP & President of Asia-Pacific | 0.01% |
| Eugene Noel | Senior VP & COO of U.S. Tower Division | 0.00% |
| Pamela D. Reeve | Independent Non-Executive Chairperson | 0.00% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-30 | Paul Blanchett | SVP & Chief Accounting Officer | Other Acquisition | +16,299 | -- |
| 2026-08-20 | Rajesh Kalathur | Director | Open Market Acquisition | +2,829 | $177.00 |
| 2026-07-28 | Ruth Dowling | Chief Administrative Officer | Automatic Disposition | -1,791 | $169.54–174.96 |
| 2026-07-28 | Robert Meyer | Chief Accounting Officer | Open Market Disposition | -5,000 | $178.89 |
| 2026-07-27 | Ruth Dowling | Chief Administrative Officer | Intent to Sell (Form 144) | -1,791 | $166.74 |
| 2026-05-31 | Robert Meyer | Chief Accounting Officer | Sale to Issuer | -153 | $187.53 |
| 2026-05-27 | Pamela D. Reeve | Independent Non-Executive Chairperson | Other Disposition | -810 | -- |
| 2026-04-28 | Ruth Dowling | Chief Administrative Officer | Automatic Disposition | -972 | $177.54–178.48 |
| 2026-03-10 | Ruth Dowling | Chief Administrative Officer | Sale to Issuer | -7,492 | $182.85–186.12 |
| 2026-03-10 | Robert Meyer | Chief Accounting Officer | Sale to Issuer | -2,052 | $182.85–186.12 |
| 2026-03-10 | Rodney Smith | Chief Financial Officer | Sale to Issuer | -13,728 | $182.85–186.12 |
| 2026-03-10 | Eugene Noel | Senior VP & COO of U.S. Tower Division | Sale to Issuer | -3,217 | $182.85–186.12 |
| 2026-03-10 | Juan Font | Senior Vice President | Sale to Issuer | -2,762 | $182.85–186.12 |
| 2026-03-10 | Steven Vondran | Executive VP & President of US Tower Division | Sale to Issuer | -17,427 | $182.85–186.12 |
| 2026-03-10 | Richard Rossi | Senior VP & General Counsel of U.S. Tower | Sale to Issuer | -2,228 | $182.85–186.12 |
| 2026-03-09 | Pamela D. Reeve | Independent Non-Executive Chairperson | Other Acquisition | +1,209 | -- |
| 2026-03-09 | Craig Macnab | Independent Director | Other Acquisition | +1,209 | -- |
| 2026-03-09 | Eugene Reilly | Director | Other Acquisition | +1,209 | -- |
| 2026-03-09 | Robert Hormats | Independent Director | Other Acquisition | +1,209 | -- |
| 2026-03-09 | Ruth Dowling | Chief Administrative Officer | Other Acquisition | +6,878 | -- |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 08:27:08 · For reference only, not investment advice and not tailored to your situation.