AMERICAN TOWER CORP NEW AMT
COM · REIT · CUSIP 03027X100 · ISIN US03027X1000
American communications infrastructure company
- SectorReal estate
- IndustryReal Estate Investment Trusts
- HeadquartersBoston, MA
- Founded1995
- Websiteamericantower.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($293.7m this quarter). Holder counts are more reliable. Shares outstanding: 468.3m as of 2025-07-22, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $220.91. Options: 45 managers hold calls ($802.0m notional), 40 hold puts ($461.2m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 1,692 |
| Q4 2022 | 1,708 |
| Q1 2023 | 1,703 |
| Q2 2023 | 1,686 |
| Q3 2023 | 1,633 |
| Q4 2023 | 1,800 |
| Q1 2024 | 1,763 |
| Q2 2024 | 1,764 |
| Q3 2024 | 1,847 |
| Q4 2024 | 1,794 |
| Q1 2025 | 1,843 |
| Q2 2025 | 1,851 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 758 | 805 |
| Q4 2023 | 790 | 830 |
| Q1 2024 | 867 | 820 |
| Q2 2024 | 827 | 836 |
| Q3 2024 | 851 | 813 |
| Q4 2024 | 689 | 1,008 |
| Q1 2025 | 862 | 854 |
| Q2 2025 | 857 | 827 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $714.5m | $626.6m | 0.88 |
| Q4 2024 | $364.6m | $376.4m | 1.03 |
| Q1 2025 | $728.8m | $361.4m | 0.50 |
| Q2 2025 | $802.0m | $461.2m | 0.58 |
Biggest buyers
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Added | +4.8m |
| BlackRock, Inc. | Added | +2.7m |
| JPMORGAN CHASE & CO | Added | +2.5m |
| VIKING GLOBAL INVESTORS LP | Added | +2.0m |
| FMR LLC | Added | +943.1k |
| MORGAN STANLEY | Added | +909.5k |
| Invesco Ltd. | Added | +708.8k |
| ROYAL BANK OF CANADA | Added | +534.8k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Added | +434.5k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +419.7k |
Biggest sellers
| COHEN & STEERS, INC. | Reduced | -4.8m |
| Capital Research Global Investors | Reduced | -1.9m |
| AKRE CAPITAL MANAGEMENT LLC | Reduced | -1.7m |
| CITADEL ADVISORS LLC | Sold out | -1.5m |
| Brookfield Corp /ON/ | Reduced | -1.0m |
| Alyeska Investment Group, L.P. | Sold out | -745.1k |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | -626.4k |
| UBS Group AG | Reduced | -571.2k |
| Altshuler Shaham Ltd | Reduced | -555.5k |
| Daiwa Securities Group Inc. | Reduced | -535.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $131.7m596.0k shares |
| CITADEL ADVISORS LLC | Added | $121.5m549.7k shares |
| JANE STREET GROUP, LLC | Added | $107.3m485.5k shares |
| Parallax Volatility Advisers, L.P. | Added | $91.9m415.8k shares |
| Twin Tree Management, LP | New | $91.5m413.9k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $28.4m128.3k shares |
| PEAK6 LLC | Added | $23.7m107.2k shares |
| WOLVERINE TRADING, LLC | Reduced | $22.9m105.2k shares |
| GROUP ONE TRADING LLC | Reduced | $20.2m91.4k shares |
| IMC-Chicago, LLC | Reduced | $19.4m87.9k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $92.6m419.0k shares |
| CITADEL ADVISORS LLC | Added | $71.4m322.9k shares |
| Parallax Volatility Advisers, L.P. | Added | $35.9m162.6k shares |
| JANE STREET GROUP, LLC | Added | $20.0m90.3k shares |
| Oribel Capital Management, LP | New | $19.2m86.9k shares |
| GOLDMAN SACHS GROUP INC | Reduced | $15.4m69.9k shares |
| WOLVERINE TRADING, LLC | Reduced | $14.6m67.0k shares |
| SIMPLEX TRADING, LLC | Added | $13.1m59.3k shares |
| IMC-Chicago, LLC | Reduced | $12.6m56.9k shares |
| GROUP ONE TRADING LLC | Added | $12.5m56.4k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-02-05 | 9.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.9% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 2 | $3.0m | $3.0m |
| Q4 2023 | 0 | — | 2 | $940.9k | $49.5k |
| Q1 2024 | 0 | — | 5 | $7.3m | $6.3m |
| Q2 2024 | 0 | — | 2 | $830.5k | — |
| Q3 2024 | 0 | — | 5 | $24.7m | $21.9m |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 4 | $9.2m | $6.1m |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.23% of their portfolio | 63.0m $13.9bn | Added +218.9k |
| BlackRock, Inc. 0.19% of their portfolio | 45.7m $10.1bn | Added +2.7m |
| STATE STREET CORP 0.18% of their portfolio | 21.1m $4.7bn | Reduced -132.4k |
| COHEN & STEERS, INC. 5.63% of their portfolio | 13.9m $3.1bn | Reduced -4.8m |
| FMR LLC 0.17% of their portfolio | 13.6m $3.0bn | Added +943.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.20% of their portfolio | 13.1m $2.9bn | Reduced -123.5k |
| JPMORGAN CHASE & CO 0.19% of their portfolio | 12.7m $2.8bn | Added +2.5m |
| MORGAN STANLEY 0.13% of their portfolio | 9.2m $2.0bn | Added +909.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.19% of their portfolio | 7.6m $1.7bn | Reduced -517.7k |
| WELLINGTON MANAGEMENT GROUP LLP 0.30% of their portfolio | 7.6m $1.7bn | Added +419.7k |
| DEUTSCHE BANK AG\ 0.58% of their portfolio | 7.2m $1.6bn | Reduced -217.0k |
| Invesco Ltd. 0.25% of their portfolio | 6.7m $1.5bn | Added +708.8k |
| DIMENSIONAL FUND ADVISORS LP 0.34% of their portfolio | 6.6m $1.5bn | Added +52.1k |
| NORGES BANK 0.17% of their portfolio | 6.2m $1.4bn | Added +121.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.71% of their portfolio | 6.1m $1.3bn | Reduced -57.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.25% of their portfolio | 5.6m $1.2bn | Added +4.8m |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.21% of their portfolio | 5.6m $1.2bn | Added +208.2k |
| NORTHERN TRUST CORP 0.17% of their portfolio | 5.5m $1.2bn | Reduced -160.0k |
| FRANKLIN RESOURCES INC 0.32% of their portfolio | 5.4m $1.2bn | Added +221.3k |
| Capital Research Global Investors 0.22% of their portfolio | 4.9m $1.1bn | Reduced -1.9m |
| GOLDMAN SACHS GROUP INC 0.17% of their portfolio | 4.8m $1.1bn | Reduced -428.0k |
| Legal & General Group Plc 0.25% of their portfolio | 4.5m $993.3m | Added +143.4k |
| AMERIPRISE FINANCIAL INC 0.24% of their portfolio | 4.4m $967.7m | Reduced -105.9k |
| Nuveen, LLC 0.26% of their portfolio | 4.3m $954.9m | Reduced -236.1k |
| BANK OF AMERICA CORP /DE/ 0.07% of their portfolio | 4.1m $896.3m | Reduced -183.5k |
| Capital World Investors 0.13% of their portfolio | 4.0m $893.0m | Added +8.7k |
| Clearbridge Investments, LLC 0.65% of their portfolio | 3.6m $797.3m | Reduced -40.4k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.25% of their portfolio | 3.6m $796.8m | Added +434.5k |
| UBS Group AG 0.15% of their portfolio | 3.2m $696.3m | Reduced -571.2k |
| WELLS FARGO & COMPANY/MN 0.15% of their portfolio | 3.1m $692.6m | Reduced -21.4k |
| Amundi 0.23% of their portfolio | 3.0m $658.7m | Added +122.0k |
| ROYAL BANK OF CANADA 0.06% of their portfolio | 2.9m $629.9m | Added +534.8k |
| VIKING GLOBAL INVESTORS LP 1.79% of their portfolio | 2.8m $618.2m | Added +2.0m |
| Bank of New York Mellon Corp 0.12% of their portfolio | 2.8m $616.6m | Reduced -155.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.32% of their portfolio | 2.1m $457.8m | Added +220.6k |
| JANUS HENDERSON GROUP PLC 0.22% of their portfolio | 2.1m $457.3m | Added +31.1k |
| Cantillon Capital Management LLC 2.35% of their portfolio | 1.8m $405.8m | Reduced -53.3k |
| Fisher Asset Management, LLC 0.16% of their portfolio | 1.8m $402.3m | Added +76.6k |
| NEUBERGER BERMAN GROUP LLC 0.30% of their portfolio | 1.8m $387.7m | Added +335.4k |
| AMERICAN CENTURY COMPANIES INC 0.20% of their portfolio | 1.6m $359.6m | Reduced -167.3k |
| NORDEA INVESTMENT MANAGEMENT AB 0.31% of their portfolio | 1.5m $334.4m | Added +15.9k |
| ALLIANCEBERNSTEIN L.P. 0.11% of their portfolio | 1.5m $334.8m | Reduced -247.9k |
| Capital International Investors 0.06% of their portfolio | 1.5m $331.2m | Added +7.7k |
| HSBC HOLDINGS PLC 0.21% of their portfolio | 1.5m $322.2m | Reduced -98.1k |
| CIBC Private Wealth Group LLC 0.57% of their portfolio | 1.4m $319.9m | Reduced -4.1k |
| California Public Employees Retirement System 0.20% of their portfolio | 1.4m $315.4m | Reduced -49.6k |
| Swiss National Bank 0.19% of their portfolio | 1.4m $313.2m | Added +99.2k |
| LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA 2.72% of their portfolio | 1.4m $307.8m | Added +7.9k |
| Sumitomo Mitsui Trust Group, Inc. 0.17% of their portfolio | 1.2m $273.1m | Reduced -8.9k |
| National Pension Service 0.23% of their portfolio | 1.2m $267.4m | Added +68.6k |
| RAYMOND JAMES FINANCIAL INC 0.08% of their portfolio | 1.1m $245.4m | Added +13.5k |
| Point72 Asset Management, L.P. 0.57% of their portfolio | 1.1m $242.5m | Reduced -293.9k |
| RHUMBLINE ADVISERS 0.20% of their portfolio | 1.1m $238.4m | Added +2.5k |
| Vontobel Holding Ltd. 0.78% of their portfolio | 1.1m $237.2m | Reduced -62.9k |
| US BANCORP \DE\ 0.28% of their portfolio | 1.0m $224.5m | Reduced -45.3k |
| BESSEMER GROUP INC 0.35% of their portfolio | 983.2k $217.3m | Reduced -153.7k |
| CANADA LIFE ASSURANCE Co 0.34% of their portfolio | 980.9k $217.1m | Added +117.4k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.52% of their portfolio | 964.5k $213.2m | Added +150.4k |
| SEI INVESTMENTS CO 0.23% of their portfolio | 916.2k $202.5m | Reduced -208.9k |
| AKRE CAPITAL MANAGEMENT LLC 1.98% of their portfolio | 915.2k $202.3m | Reduced -1.7m |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.16% of their portfolio | 891.3k $197.0m | Added +59.3k |
| M&G PLC 1.08% of their portfolio | 884.3k $195.4m | Reduced -30.3k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 2.28% of their portfolio | 877.9k $194.0m | Reduced -13.1k |
| DAVENPORT & Co LLC 1.06% of their portfolio | 872.1k $191.8m | Added +253.7k |
| BARCLAYS PLC 0.07% of their portfolio | 840.2k $185.7m | Reduced -241.2k |
| Magellan Asset Management Ltd 2.12% of their portfolio | 837.3k $185.1m | Reduced -58.2k |
| Heard Capital LLC 9.53% of their portfolio | 825.2k $182.4m | Added +24.0k |
| Russell Investments Group, Ltd. 0.23% of their portfolio | 817.2k $180.5m | Reduced -97.5k |
| CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC 2.68% of their portfolio | 798.8k $176.6m | Added +191.2k |
| ENVESTNET ASSET MANAGEMENT INC 0.05% of their portfolio | 780.2k $172.5m | Added +20.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.17% of their portfolio | 778.6k $172.1m | Reduced -626.4k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.91% of their portfolio | 777.5k $171.9m | Added +18.4k |
| Ensign Peak Advisors, Inc 0.29% of their portfolio | 777.0k $171.7m | Added +171.5k |
| Sarasin & Partners LLP 1.71% of their portfolio | 776.5k $171.6m | Reduced -28.3k |
| BLAIR WILLIAM & CO/IL 0.47% of their portfolio | 773.2k $170.9m | Reduced -4.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.18% of their portfolio | 724.8k $160.2m | Added +1.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.14% of their portfolio | 718.5k $158.8m | Reduced -129.3k |
| Aberdeen Group plc 0.26% of their portfolio | 699.2k $152.4m | Added +26.2k |
| STOREBRAND ASSET MANAGEMENT AS 0.45% of their portfolio | 696.6k $154.0m | Added +40.8k |
| T. Rowe Price Investment Management, Inc. 0.09% of their portfolio | 676.7k $149.6m | Added +25.9k |
| Corient Private Wealth LP 0.19% of their portfolio | 645.3k $142.6m | Reduced -3.5k |
| MACKENZIE FINANCIAL CORP 0.18% of their portfolio | 633.6k $140.0m | Added +152.2k |
| FEDERATED HERMES, INC. 0.26% of their portfolio | 625.9k $138.3m | Added +69.3k |
| Liontrust Investment Partners LLP 1.95% of their portfolio | 615.3k $136.0m | Reduced -36.1k |
| Swedbank AB 0.15% of their portfolio | 594.9k $131.5m | First filing |
| MACQUARIE GROUP LTD 0.16% of their portfolio | 591.0k $130.6m | Added +19.6k |
| 1832 Asset Management L.P. 0.22% of their portfolio | 576.3k $127.4m | Reduced -412.9k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.17% of their portfolio | 570.0k $126.0m | Reduced -5.0k |
| BAMCO INC /NY/ 0.34% of their portfolio | 567.8k $125.5m | Reduced -131.9k |
| BANK OF MONTREAL /CAN/ 0.06% of their portfolio | 564.4k $124.7m | Reduced -49.7k |
| CITIGROUP INC 0.08% of their portfolio | 540.8k $119.5m | Reduced -67.7k |
| DekaBank Deutsche Girozentrale 0.21% of their portfolio | 535.4k $116.9m | Reduced -10.2k |
| Jain Global LLC 1.75% of their portfolio | 510.7k $112.9m | Added +344.9k |
| MARSHALL WACE, LLP 0.13% of their portfolio | 509.6k $112.6m | Reduced -182.8k |
| LASALLE INVESTMENT MANAGEMENT SECURITIES LLC 4.31% of their portfolio | 476.5k $105.3m | Added +4.7k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.09% of their portfolio | 472.1k $104.3m | Added +106.6k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.17% of their portfolio | 463.8k $102.5m | Added +142.7k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.18% of their portfolio | 457.2k $101.1m | Added +10.0k |
| GREAT LAKES ADVISORS, LLC 0.84% of their portfolio | 452.8k $100.1m | Reduced -10.4k |
| AVIVA PLC 0.21% of their portfolio | 449.6k $99.4m | Reduced -51.5k |