American Tower Corp. (AMT)

Sector:Technology
Super Investor Stats:
Ownership count:5
Ownership rank:89
% of all portfolios:0.215%
Hold Price * :$215.88
History Portfolio Manager Activity ▼ Share change % change to portfolio
Q4  2023
≡ Torray Funds Add 72.52% 18,836 0.66
≡ Christopher Davis - Davis Advisors Add 29.95% 13,410 0.02
≡ William Von Mueffling - Cantillon Capital Management Add 14.53% 271,293 0.39
≡ Chuck Akre - Akre Capital Management Add 0.54% 36,375 0.07
≡ Bill & Melinda Gates Foundation Trust Sell 100.00% 11,000 0.00
Q3  2023
≡ Torray Funds Add 1.94% 494 0.01
≡ Chuck Akre - Akre Capital Management Add 0.35% 23,277 0.04
≡ Bill & Melinda Gates Foundation Trust Buy 11,000 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.39% 7,313 0.01
≡ Christopher Davis - Davis Advisors Reduce 29.40% 18,650 0.02
Q2  2023
≡ William Von Mueffling - Cantillon Capital Management Add 6.35% 111,955 0.15
≡ Christopher Davis - Davis Advisors Add 2.44% 1,510 0.00
≡ Torray Funds Add 0.76% 191 0.01
≡ Chuck Akre - Akre Capital Management Reduce 3.63% 253,751 0.41
Q1  2023
≡ Chuck Akre - Akre Capital Management Add 0.08% 5,271 0.01
≡ Torray Funds Reduce 0.70% 177 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.68% 30,104 0.05
≡ Christopher Davis - Davis Advisors Reduce 11.91% 8,370 0.01
Q4  2022
≡ Chuck Akre - Akre Capital Management Add 0.29% 20,240 0.04
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.10% 38,506 0.07
≡ Torray Funds Reduce 3.62% 956 0.04
≡ Christopher Davis - Davis Advisors Reduce 11.51% 9,140 0.01
Q3  2022
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.71% 13,128 0.03
≡ Torray Funds Reduce 1.05% 281 0.01
Q2  2022
≡ Christopher Davis - Davis Advisors Add 3.38% 2,600 0.00
≡ Chuck Akre - Akre Capital Management Reduce 0.36% 25,190 0.05
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.45% 8,318 0.02
≡ Torray Funds Reduce 1.38% 373 0.02
Q1  2022
≡ William Von Mueffling - Cantillon Capital Management Add 2.93% 52,784 0.09
≡ Christopher Davis - Davis Advisors Add 1.12% 850 0.00
≡ Chuck Akre - Akre Capital Management Reduce 0.15% 10,720 0.02
≡ Torray Funds Reduce 4.62% 1,310 0.05
Q4  2021
≡ Christopher Davis - Davis Advisors Add 15.56% 10,230 0.01
≡ Chuck Akre - Akre Capital Management Add 0.02% 1,310 0.00
≡ Torray Funds Reduce 3.28% 964 0.04
≡ William Von Mueffling - Cantillon Capital Management Reduce 6.97% 134,825 0.26
Q3  2021
≡ Christopher Davis - Davis Advisors Add 224.85% 45,510 0.06
≡ Chuck Akre - Akre Capital Management Reduce 0.12% 8,475 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.66% 32,664 0.06
≡ Torray Funds Reduce 3.22% 978 0.04
Q2  2021
≡ Thomas Gayner - Markel Asset Management Add 0.35% 180 0.00
≡ Christopher Davis - Davis Advisors Buy 20,240 0.02
≡ Chuck Akre - Akre Capital Management Reduce 0.01% 640 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.12% 22,222 0.04
≡ Torray Funds Reduce 2.40% 745 0.03
Q1  2021
≡ Torray Funds Add 19.68% 5,109 0.19
≡ Thomas Gayner - Markel Asset Management Add 1.13% 580 0.00
≡ Chuck Akre - Akre Capital Management Reduce 1.59% 113,656 0.18
≡ William Von Mueffling - Cantillon Capital Management Reduce 3.71% 76,675 0.13
Q4  2020
≡ Chuck Akre - Akre Capital Management Add 1.38% 97,189 0.15
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.49% 10,278 0.02
≡ Torray Funds Reduce 1.89% 499 0.02
Q3  2020
≡ Torray Funds Add 0.80% 210 0.01
≡ Chuck Akre - Akre Capital Management Reduce 0.06% 4,570 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.06% 22,200 0.04
Q2  2020
≡ William Von Mueffling - Cantillon Capital Management Add 0.91% 18,964 0.04
≡ Chuck Akre - Akre Capital Management Reduce 0.05% 3,690 0.01
≡ Torray Funds Reduce 0.14% 36 0.00
Q1  2020
≡ Thomas Gayner - Markel Asset Management Add 6.12% 2,950 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.10% 2,147 0.01
≡ Torray Funds Reduce 1.69% 452 0.02
≡ Chuck Akre - Akre Capital Management Reduce 2.01% 144,583 0.31
Q4  2019
≡ Thomas Gayner - Markel Asset Management Add 6.87% 3,100 0.01
≡ Chuck Akre - Akre Capital Management Reduce 0.00% 280 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.06% 43,818 0.09
≡ Torray Funds Reduce 77.48% 91,984 3.65
Q3  2019
≡ Thomas Gayner - Markel Asset Management Add 27.04% 9,600 0.03
≡ Chuck Akre - Akre Capital Management Reduce 0.00% 36 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.58% 12,342 0.03
≡ Torray Funds Reduce 0.78% 939 0.02
Q2  2019
≡ Chuck Akre - Akre Capital Management Reduce 0.00% 300 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.01% 43,954 0.09
≡ Torray Funds Reduce 4.52% 5,667 0.12
Q1  2019
≡ Chuck Akre - Akre Capital Management Add 1.69% 119,400 0.25
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.39% 8,434 0.02
≡ Torray Funds Reduce 2.45% 3,146 0.07
Q4  2018
≡ William Von Mueffling - Cantillon Capital Management Add 0.74% 16,016 0.03
≡ Chuck Akre - Akre Capital Management Reduce 0.01% 620 0.00
≡ Torray Funds Reduce 12.09% 17,675 0.33
Q3  2018
≡ Chuck Akre - Akre Capital Management Reduce 0.05% 3,271 0.01
≡ William Von Mueffling - Cantillon Capital Management Reduce 6.26% 145,112 0.24
Q2  2018
≡ Chuck Akre - Akre Capital Management Add 0.21% 15,108 0.03
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.73% 64,976 0.10
Q1  2018
≡ Chuck Akre - Akre Capital Management Add 3.89% 264,024 0.50
≡ William Von Mueffling - Cantillon Capital Management Reduce 1.88% 45,629 0.08
Q4  2017
≡ Chuck Akre - Akre Capital Management Add 0.02% 1,660 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 6.50% 168,868 0.29
Q3  2017
≡ Chuck Akre - Akre Capital Management Reduce 0.30% 20,376 0.04
≡ William Von Mueffling - Cantillon Capital Management Reduce 2.94% 78,742 0.13
Q2  2017
≡ Thomas Gayner - Markel Asset Management Add 20.34% 6,000 0.02
≡ Chuck Akre - Akre Capital Management Add 1.67% 111,805 0.24
≡ William Von Mueffling - Cantillon Capital Management Reduce 4.19% 117,085 0.19
Q1  2017
≡ Thomas Gayner - Markel Asset Management Add 110.71% 15,500 0.04
≡ Chuck Akre - Akre Capital Management Reduce 0.04% 2,392 0.00
≡ William Von Mueffling - Cantillon Capital Management Reduce 0.84% 23,533 0.04
Q4  2016
≡ Thomas Gayner - Markel Asset Management Add 600.00% 12,000 0.03
≡ William Von Mueffling - Cantillon Capital Management Add 148.45% 1,683,925 2.49
≡ Chuck Akre - Akre Capital Management Add 6.36% 400,654 0.79
Q3  2016
≡ Thomas Gayner - Markel Asset Management Buy 2,000 0.01
≡ Chuck Akre - Akre Capital Management Reduce 0.03% 1,690 0.00

* "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.