American Tower Corp. (AMT)

Sector:Technology
Super Investor Stats:
Ownership count:4
Ownership rank:204
% of all portfolios:0.026%
Hold Price * :$172.58
History Portfolio Manager Activity ▲ Share change % change to portfolio
Q1  2026
≡ Chuck Akre - Akre Capital Management Reduce 80.11% 204,495 0.56
≡ William Von Mueffling - Cantillon Capital Management Reduce 11.91% 218,052 0.25
Q4  2025
≡ Chuck Akre - Akre Capital Management Reduce 42.36% 187,576 0.36
≡ Mairs & Power Funds Reduce 33.36% 1,011 0.00
≡ Christopher Davis - Davis Advisors Reduce 2.59% 1,700 0.00
≡ Torray Funds Sell 100.00% 1,221 0.03
Q3  2025
≡ Torray Funds Reduce 57.97% 1,684 0.04
≡ Chuck Akre - Akre Capital Management Reduce 51.62% 472,406 0.91
≡ Christopher Davis - Davis Advisors Reduce 28.35% 25,980 0.03
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.09% 20,035 0.02
≡ Viking Global Investors Sell 100.00% 2,797,125 1.79
Q2  2025
≡ Torray Funds Reduce 93.99% 45,416 1.41
≡ Chuck Akre - Akre Capital Management Reduce 64.65% 1,673,943 3.62
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.82% 53,339 0.07
Q1  2025
≡ Chuck Akre - Akre Capital Management Reduce 52.95% 2,914,221 6.10
≡ Viking Global Investors Reduce 6.52% 58,544 0.04
≡ William Von Mueffling - Cantillon Capital Management Reduce 3.00% 58,405 0.08
≡ Torray Funds Reduce 1.23% 602 0.02
≡ Christopher Davis - Davis Advisors Reduce 0.66% 590 0.00
Q4  2024
≡ Chuck Akre - Akre Capital Management Reduce 9.07% 549,119 0.87
≡ Thomas Gayner - Markel Group Sell 100.00% 51,910 0.11
Q3  2024
≡ Torray Funds Reduce 10.72% 5,063 0.16
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.90% 57,953 0.08
≡ Chuck Akre - Akre Capital Management Reduce 1.33% 81,775 0.16
≡ Christopher Davis - Davis Advisors Reduce 0.17% 130 0.00
Q2  2024
≡ William Von Mueffling - Cantillon Capital Management Reduce 4.83% 101,165 0.13
≡ Chuck Akre - Akre Capital Management Reduce 1.02% 63,518 0.11
≡ Lee Ainslie - Maverick Capital Sell 100.00% 1,188 0.00
Q1  2024
≡ Chuck Akre - Akre Capital Management Reduce 8.92% 606,774 0.99
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.97% 42,054 0.05
Q4  2023
≡ Bill & Melinda Gates Foundation Trust Sell 100.00% 11,000 0.00
Q3  2023
≡ Christopher Davis - Davis Advisors Reduce 29.40% 18,650 0.02
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.39% 7,313 0.01
Q2  2023
≡ Chuck Akre - Akre Capital Management Reduce 3.63% 253,751 0.41
Q1  2023
≡ Christopher Davis - Davis Advisors Reduce 11.91% 8,370 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.68% 30,104 0.05
≡ Torray Funds Reduce 0.70% 177 0.01
Q4  2022
≡ Christopher Davis - Davis Advisors Reduce 11.51% 9,140 0.01
≡ Torray Funds Reduce 3.62% 956 0.04
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.10% 38,506 0.07
Q3  2022
≡ Torray Funds Reduce 1.05% 281 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.71% 13,128 0.03
Q2  2022
≡ Torray Funds Reduce 1.38% 373 0.02
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.45% 8,318 0.02
≡ Chuck Akre - Akre Capital Management Reduce 0.36% 25,190 0.05
Q1  2022
≡ Torray Funds Reduce 4.62% 1,310 0.05
≡ Chuck Akre - Akre Capital Management Reduce 0.15% 10,720 0.02
Q4  2021
≡ William Von Mueffling - Cantillon Capital Management Reduce 6.97% 134,825 0.26
≡ Torray Funds Reduce 3.28% 964 0.04
Q3  2021
≡ Torray Funds Reduce 3.22% 978 0.04
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.66% 32,664 0.06
≡ Chuck Akre - Akre Capital Management Reduce 0.12% 8,475 0.01
Q2  2021
≡ Torray Funds Reduce 2.40% 745 0.03
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.12% 22,222 0.04
≡ Chuck Akre - Akre Capital Management Reduce 0.01% 640 0.00
Q1  2021
≡ William Von Mueffling - Cantillon Capital Management Reduce 3.71% 76,675 0.13
≡ Chuck Akre - Akre Capital Management Reduce 1.59% 113,656 0.18
Q4  2020
≡ Torray Funds Reduce 1.89% 499 0.02
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.49% 10,278 0.02
Q3  2020
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.06% 22,200 0.04
≡ Chuck Akre - Akre Capital Management Reduce 0.06% 4,570 0.01
Q2  2020
≡ Torray Funds Reduce 0.14% 36 0.00
≡ Chuck Akre - Akre Capital Management Reduce 0.05% 3,690 0.01
Q1  2020
≡ Chuck Akre - Akre Capital Management Reduce 2.01% 144,583 0.31
≡ Torray Funds Reduce 1.69% 452 0.02
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.10% 2,147 0.01
Q4  2019
≡ Torray Funds Reduce 77.48% 91,984 3.65
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.06% 43,818 0.09
≡ Chuck Akre - Akre Capital Management Reduce 0.00% 280 0.00
Q3  2019
≡ Torray Funds Reduce 0.78% 939 0.02
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.58% 12,342 0.03
≡ Chuck Akre - Akre Capital Management Reduce 0.00% 36 0.00
Q2  2019
≡ Torray Funds Reduce 4.52% 5,667 0.12
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.01% 43,954 0.09
≡ Chuck Akre - Akre Capital Management Reduce 0.00% 300 0.00
Q1  2019
≡ Torray Funds Reduce 2.45% 3,146 0.07
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.39% 8,434 0.02
Q4  2018
≡ Torray Funds Reduce 12.09% 17,675 0.33
≡ Chuck Akre - Akre Capital Management Reduce 0.01% 620 0.00
Q3  2018
≡ William Von Mueffling - Cantillon Capital Management Reduce 6.26% 145,112 0.24
≡ Chuck Akre - Akre Capital Management Reduce 0.05% 3,271 0.01
Q2  2018
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.73% 64,976 0.10
Q1  2018
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.88% 45,629 0.08
Q4  2017
≡ William Von Mueffling - Cantillon Capital Management Reduce 6.50% 168,868 0.29
Q3  2017
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.94% 78,742 0.13
≡ Chuck Akre - Akre Capital Management Reduce 0.30% 20,376 0.04
Q2  2017
≡ William Von Mueffling - Cantillon Capital Management Reduce 4.19% 117,085 0.19
Q1  2017
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.84% 23,533 0.04
≡ Chuck Akre - Akre Capital Management Reduce 0.04% 2,392 0.00
Q3  2016
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.34% 3,900 0.01
≡ Chuck Akre - Akre Capital Management Reduce 0.03% 1,690 0.00
Q2  2016
≡ Chuck Akre - Akre Capital Management Reduce 0.17% 10,849 0.02
≡ Thomas Gayner - Markel Group Sell 100.00% 20,000 0.05
Q4  2014
≡ Chuck Akre - Akre Capital Management Reduce 0.01% 290 0.00
Q3  2014
≡ Chuck Akre - Akre Capital Management Reduce 0.18% 7,225 0.02
Q2  2014
≡ Chuck Akre - Akre Capital Management Reduce 0.06% 2,525 0.01
Q1  2013
≡ Chuck Akre - Akre Capital Management Reduce 0.54% 9,096 0.04
Q4  2012
≡ Chuck Akre - Akre Capital Management Reduce 2.65% 46,305 0.26
Q3  2012
≡ Chuck Akre - Akre Capital Management Reduce 0.15% 2,585 0.01
Q4  2011
≡ Thomas Russo - Gardner Russo & Quinn Sell 100.00% 71,330 0.08

* "Hold Price" is the last known price at which an investor still held a security. It is the closing price of the security as of the portfolio date (quarter end). This value is only provided when a security is owned by at least two investors. In the case of reporting dates being different, a weighted average price is calculated.