American Tower Corporation
AMT | NYSE
$187.78
+$1.90 (+1.02%)
At close: Oct 30, 2026, 4:00 PM ET
$187.68
-$0.10 (-0.05%)
After-hours:
Oct 30, 2026, 7:57 PM ET
Market Cap History History
Annual Market Cap Change Annual Change
| Date | Market Cap | Change | % Change |
|---|---|---|---|
| Oct 30, 2026 | $87.38B | $4.81B | +5.83% |
| Dec 26, 2025 | $82.57B | -$2.4B | -2.83% |
| Dec 27, 2024 | $84.97B | -$15.67B | -15.57% |
| Dec 29, 2023 | $100.64B | $2B | +2.02% |
| Dec 30, 2022 | $98.64B | -$34.59B | -25.96% |
| Dec 31, 2021 | $133.23B | $33.51B | +33.60% |
| Dec 31, 2020 | $99.73B | -$1.7B | -1.68% |
| Dec 27, 2019 | $101.43B | $31.4B | +44.84% |
| Dec 28, 2018 | $70.03B | $8.78B | +14.34% |
| Dec 29, 2017 | $61.25B | $16.28B | +36.20% |
| Dec 30, 2016 | $44.97B | $3.89B | +9.46% |
| Dec 31, 2015 | $41.08B | $1.2B | +3.02% |
| Dec 26, 2014 | $39.88B | $8.76B | +28.16% |
| Dec 27, 2013 | $31.11B | $1.12B | +3.73% |
| Dec 28, 2012 | $30B | $6.28B | +26.48% |
| Dec 30, 2011 | $23.71B | $3.17B | +15.45% |
| Dec 31, 2010 | $20.54B | $3.16B | +18.15% |
| Dec 31, 2009 | $17.39B | $6.26B | +56.20% |
| Dec 26, 2008 | $11.13B | -$6.27B | -36.02% |
| Dec 28, 2007 | $17.4B | $1.52B | +9.55% |
| Dec 29, 2006 | $15.88B | n/a | n/a |
Add to Watchlist
Select watchlists to add or remove AMT