AMT
AMERICAN TOWER CORP /MA/
Real Estate Investment TrustsNYSELarge accelerated filer
Total Trades
66
Buys
4
Sells
42
Largest Trade
N/A
Insiders
17
Institutional Funds
1,593
Inst. Value
$1M+
Activist Filings
5
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| HORMATS ROBERT D | Director | SELL | $15K–$50K | 150 | $252.94 | Sep 6, 2022 |
| HORMATS ROBERT D | Director | SELL | $15K–$50K | 150 | $254.53 | Jul 6, 2022 |
| HORMATS ROBERT D | Director | SELL | $15K–$50K | 200 | $235.40 | Jun 17, 2022 |
| HORMATS ROBERT D | Director | SELL | $50K–$100K | 200 | $256.13 | Jun 3, 2022 |
| Tanner Bruce L | Director | BUY | $1K–$15K | 9 | $244.96 | May 3, 2022 |
| Smith Rodney M | EVP, CFO & Treasurer | SELL | $1M+ | 25K | $270.00 | Apr 25, 2022 |
| Smith Rodney M | EVP, CFO & Treasurer | EXERCISE | $1M+ | 25K | $76.90 | Apr 25, 2022 |
| Meyer Robert Joseph JR | SVP & Chief Accoun… | SELL | $500K+ | 3K | $235.76 | Mar 17, 2022 |
| Tanner Bruce L | Director | BUY | $1K–$15K | 4 | $252.12 | Mar 14, 2022 |
| Tanner Bruce L | Director | GRANT | N/A | 881 | — | Mar 14, 2022 |
| THOMPSON SAMME L | Director | SELL | $100K–$500K | 2K | $248.16 | Feb 8, 2022 |
| THOMPSON SAMME L | Director | EXERCISE | $50K–$100K | 2K | $62.00 | Feb 8, 2022 |
| Smith Rodney M | EVP, CFO & Treasurer | SELL | $1M+ | 4K | $260.00 | Jan 18, 2022 |
| Smith Rodney M | EVP, CFO & Treasurer | EXERCISE | $100K–$500K | 4K | $71.07 | Jan 18, 2022 |
| THOMPSON SAMME L | Director | SELL | $500K+ | 2K | $292.37 | Jan 5, 2022 |
| THOMPSON SAMME L | Director | EXERCISE | $100K–$500K | 2K | $62.00 | Jan 5, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 1,593 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| J. Stern & Co. LLP | 37.7M | $1M+ | SH |
| STATE STREET CORP | 21.0M | $1M+ | SH |
| COHEN & STEERS, INC. | 12.5M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 12.1M | $1M+ | SH |
| NORGES BANK | 6.7M | $1M+ | SH |
| LAZARD ASSET MANAGEMENT LLC | 6.1M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 5.8M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 5.1M | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 4.3M | $1M+ | SH |
| Capital World Investors | 4.2M | $1M+ | SH |
| Capital Research Global Investors | 3.9M | $1M+ | SH |
| Capital International Investors | 3.9M | $1M+ | SH |
| Clearbridge Investments, LLC | 3.2M | $1M+ | SH |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 2.5M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 2.0M | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 9.7M | $1M+ | SH |
| Fisher Asset Management, LLC | 1.8M | $1M+ | SH |
| National Pension Service | 1.5M | $1M+ | SH |
| BlackRock, Inc. | 1.5M | $1M+ | SH |
| UBS Group AG | 1.5M | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 5, 2025
9.2%
43.0M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
13.1%
61.0M shares
SC 13G/A · Jan 26, 2024
7.9%
36.8M shares
SC 13G/A · Jan 31, 2023
7.7%
35.9M shares
SC 13G/A · Feb 1, 2022
8.0%
36.6M shares