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American Tower Corp

AMT
Exchange
NYSE
Industry
Real Estate Investment Trusts
SEC CIK
0001053507

In the last 90 days, American Tower Corp insiders filed 1 open-market purchase and 2 sales; 1,757 institutions reported holding it in 13F filings for Q2 2026, worth $72.0B in total; Akre Capital Management is the only superinvestor holding it.

13F holders, Q4 2021

Institutional positions in American Tower Corp as of Dec 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,799
+146 vs. Q3 2021
Shares held
417.0M
+4.68M (+1.1%) vs. Q3 2021
Total value
$121.8B
+$12.3B (+11.2%) vs. Q3 2021
New holders
256
787 more added
Sold out
110
503 more reduced

25 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2021: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting AMT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2021: 1,799 institutions
Q1 2021: 1,613 institutionsQ2 2021: 1,656 institutionsQ3 2021: 1,678 institutionsQ4 2021: 1,799 institutionsQ1 2022: 1,723 institutionsQ2 2022: 1,747 institutionsQ3 2022: 1,693 institutionsQ4 2022: 1,711 institutionsQ1 2023: 1,706 institutionsQ2 2023: 1,688 institutionsQ3 2023: 1,634 institutionsQ4 2023: 1,802 institutionsQ1 2024: 1,769 institutionsQ2 2024: 1,769 institutionsQ3 2024: 1,852 institutionsQ4 2024: 1,798 institutionsQ1 2025: 1,845 institutionsQ2 2025: 1,851 institutionsQ3 2025: 1,799 institutionsQ4 2025: 1,781 institutionsQ1 2026: 1,760 institutionsQ2 2026: 1,757 institutions
Value heldQ4 2021: $121.8B
Q1 2021: $95.8BQ2 2021: $111.7BQ3 2021: $109.6BQ4 2021: $121.8BQ1 2022: $104.3BQ2 2022: $109.0BQ3 2022: $91.0BQ4 2022: $90.0BQ1 2023: $86.3BQ2 2023: $82.1BQ3 2023: $69.9BQ4 2023: $93.6BQ1 2024: $85.0BQ2 2024: $83.8BQ3 2024: $99.4BQ4 2024: $79.6BQ1 2025: $95.0BQ2 2025: $96.5BQ3 2025: $82.5BQ4 2025: $77.0BQ1 2026: $74.4BQ2 2026: $72.0B
Institutions holding AMT and their total value by quarter
QuarterHoldersValue
Q2 20261,757$72.0B
Q1 20261,760$74.4B
Q4 20251,781$77.0B
Q3 20251,799$82.5B
Q2 20251,851$96.5B
Q1 20251,845$95.0B
Q4 20241,798$79.6B
Q3 20241,852$99.4B
Q2 20241,769$83.8B
Q1 20241,769$85.0B
Q4 20231,802$93.6B
Q3 20231,634$69.9B
Q2 20231,688$82.1B
Q1 20231,706$86.3B
Q4 20221,711$90.0B
Q3 20221,693$91.0B
Q2 20221,747$109.0B
Q1 20221,723$104.3B
Q4 20211,799$121.8B
Q3 20211,678$109.6B
Q2 20211,656$111.7B
Q1 20211,613$95.8B

Institutions, Q4 2021

Shares, value and share of portfolio for each institution holding American Tower Corp; share changes are against Q3 2021.

Institutions holding AMT in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Heritage Investors Management Corp76,744$22.4M0.87%−120.0%Reduced
Cohen Klingenstein LLC78,609$23.0M0.91%−8,175−9.4%Reduced
Impax Asset Management Group plc79,200$23.2M0.08%00.0%Unchanged
MAI Capital Management79,540$23.3M0.38%+631+0.8%Added
Fulton Breakefield Broenniman LLC79,805$23.3M1.73%+445+0.6%Added
British Columbia Investment Management Corp80,009$23.4M0.13%−4,074−4.8%Reduced
Ossiam81,356$23.8M0.62%+81,020+24,113.1%Added
Sit Investment Associates Inc81,529$23.8M0.56%+5,979+7.9%Added
Utah Retirement Systems81,898$24.0M0.30%+200+0.2%Added
Stock Yards Bank & Trust Co82,949$24.3M1.28%+1,133+1.4%Added
Cavalry Management Group, LLC83,102$24.3M2.82%+83,102New
Gulf International Bank (UK) Ltd85,060$24.9M0.35%−15,054−15.0%Reduced
Skandinaviska Enskilda Banken AB (publ)86,099$25.1M0.13%−4,916−5.4%Reduced
Financial Counselors Inc87,667$25.6M0.53%−4,632−5.0%Reduced
Yousif Capital Management, LLC87,712$25.7M0.27%+87,712New
Border to Coast Pensions Partnership Ltd88,587$25.9M0.87%00.0%Unchanged
Employees Retirement System of Texas89,500$26.2M0.29%00.0%Unchanged
Raub Brock Capital Management LP98,765$26.2M3.98%00.0%Unchanged
Bank of Nova Scotia89,645$26.2M0.04%+13,643+18.0%Added
Securian Asset Management, Inc92,957$27.2M0.50%−2,890−3.0%Reduced
GEM Realty Capital93,272$27.3M6.59%+54,096+138.1%Added
Xponance, Inc.93,419$27.3M0.43%+6,534+7.5%Added
Barr E S & Co93,933$27.5M1.83%−1,298−1.4%Reduced
Comerica Bank110,147$27.6M0.20%−2,985−2.6%Reduced
Agf Investments Inc.94,840$27.7M0.20%+2,066+2.2%Added
Boston Private Wealth LLC94,922$27.8M0.46%+7,960+9.2%Added
Nomura Asset Management Co Ltd95,498$27.9M0.14%+5,598+6.2%Added
Alberta Investment Management Corp100,200$29.3M0.18%−9,900−9.0%Reduced
MetLife Investment Management100,621$29.4M0.24%−2,178−2.1%Reduced
Capital Group Private Client Services, Inc.100,736$29.5M0.31%−82,763−45.1%Reduced
Mill Capital Management, LLC101,811$29.8M3.05%+101,811New
Campbell Newman Asset Management Inc102,150$29.9M2.66%+904+0.9%Added
RMB Capital Management, LLC102,463$30.0M0.90%−1,784−1.7%Reduced
Shell Asset Management Co102,766$30.1M0.62%+14,513+16.4%Added
Hazelview Securities Inc.105,398$30.2M3.80%−38,282−26.6%Reduced
First Long Island Investors, LLC103,477$30.3M2.38%+12,985+14.3%Added
Mirae Asset Global Investments Co., Ltd.104,196$30.5M0.07%+21,331+25.7%Added
Baskin Financial Services Inc.104,529$30.6M2.44%+4,556+4.6%Added
Whittier Trust Co104,827$30.7M0.50%+1,575+1.5%Added
Man Group plc105,885$31.0M0.10%+105,885New
DnB Asset Management AS106,490$31.1M0.18%+19,208+22.0%Added
Pendal Group Limited109,161$31.9M0.26%−278,612−71.8%Reduced
USS Investment Management Ltd109,242$31.9M0.25%00.0%Unchanged
Presima Inc.110,860$32.4M5.54%+88,000+385.0%Added
Boston Family Office LLC111,649$32.7M2.12%+182+0.2%Added
Susquehanna International Group, LLP112,635$32.9M0.05%+17,917+18.9%Added
Madison Asset Management, LLC113,485$33.2M0.44%−185,841−62.1%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund113,684$33.3M0.29%+2,459+2.2%Added
Janney Montgomery Scott LLC113,957$33.3M0.13%+3,913+3.6%Added
State of Michigan Retirement System114,695$33.5M0.18%+400+0.3%Added
Amalgamated Bank115,051$33.7M0.25%+13,718+13.5%Added
Thrivent Financial for Lutherans116,286$33.9M0.07%−6,791−5.5%Reduced
Forsta Ap-Fonden116,300$34.0M0.34%−2,200−1.9%Reduced
Handelsbanken Fonder AB116,404$34.0M0.17%+1,585+1.4%Added
Boston Financial Mangement LLC116,632$34.1M1.24%+3,419+3.0%Added
Tiaa, FSB118,373$34.5M0.11%+777+0.7%Added
Natixis Advisors, L.P.118,158$34.6M0.13%+8,937+8.2%Added
MUFG Americas Holdings Corp118,172$34.6M0.65%−1,152−1.0%Reduced
Jennison Associates LLC118,279$34.6M0.02%−134,640−53.2%Reduced
Payden & Rygel120,860$35.4M1.63%+120,860New
Carnegie Capital Asset Management, LLC124,371$36.4M1.20%+918+0.7%Added
Arizona State Retirement System124,654$36.5M0.28%−2,143−1.7%Reduced
Motley Fool Wealth Management, LLC124,738$36.5M1.59%−1,760−1.4%Reduced
Barton Investment Management125,326$36.7M3.18%−14,045−10.1%Reduced
Teachers Retirement System of the State of Kentucky128,408$37.6M0.33%+13,799+12.0%Added
Trillium Asset Management, LLC129,040$37.7M0.89%+6,079+4.9%Added
KBC Group NV131,184$38.4M0.13%+34,051+35.1%Added
Covea Finance131,301$38.4M3.36%+131,301New
Vontobel Holding Ltd.133,252$38.8M0.32%+25,546+23.7%Added
United Capital Financial Advisers, LLC132,787$38.8M0.18%−3,653−2.7%Reduced
Brown Brothers Harriman & Co133,797$39.1M0.22%+3,085+2.4%Added
Factory Mutual Insurance Co169,200$40.8M0.59%−38,450−18.5%Reduced
Advisor Group Holdings, Inc.140,649$41.1M0.08%+9,491+7.2%Added
Commonwealth Equity Services, LLC140,573$41.1M0.09%+16,826+13.6%Added
Greenleaf Trust140,911$41.2M0.48%+2,365+1.7%Added
Schroder Investment Management Group142,696$41.7M0.06%+14,904+11.7%Added
Baird Financial Group, Inc.144,013$42.1M0.10%+4,288+3.1%Added
Dearborn Partners LLC144,524$42.3M1.53%+130.0%Added
Guggenheim Capital LLC146,688$42.9M0.23%+1,335+0.9%Added
Public Sector Pension Investment Board148,991$43.6M0.24%−25,790−14.8%Reduced
Penserra Capital Management LLC149,315$43.7M0.93%+23,002+18.2%Added
American International Group, Inc.150,226$43.9M0.22%−294−0.2%Reduced
Loomis Sayles & Co L P150,652$44.1M0.05%−20,735−12.1%Reduced
Westpac Banking Corp153,853$45.0M0.47%−63,148−29.1%Reduced
Klingenstein Fields & Co LP154,840$45.3M1.82%−1,091−0.7%Reduced
Aureus Asset Management, LLC156,217$45.7M2.82%+2,032+1.3%Added
Calamos Advisors LLC156,363$45.7M0.18%+3,251+2.1%Added
Gateway Investment Advisers LLC158,984$46.5M0.44%−843−0.5%Reduced
DekaBank Deutsche Girozentrale162,354$46.8M0.11%+53,005+48.5%Added
Zurcher Kantonalbank (Zurich Cantonalbank)161,411$47.2M0.23%+11,146+7.4%Added
Clal Insurance Enterprises Holdings Ltd161,076$47.3M0.51%+37,576+30.4%Added
Rheos Capital Works Inc.162,600$47.6M2.08%−125,000−43.5%Reduced
ProShare Advisors LLC162,848$47.6M0.09%+28,553+21.3%Added
Rockefeller Capital Management L.P.164,832$48.2M0.22%+10,518+6.8%Added
EP Wealth Advisors, LLC168,798$49.4M1.17%+6,411+3.9%Added
Teacher Retirement System of Texas170,827$50.0M0.22%+43,526+34.2%Added
Mariner, LLC173,312$50.7M0.21%+140,986+436.1%Added
Victory Capital Management Inc175,061$51.2M0.05%−983−0.6%Reduced
HighTower Advisors, LLC177,101$51.8M0.11%+58,366+49.2%Added
Fort Washington Investment Advisors Inc181,400$53.1M0.32%−21,846−10.7%Reduced