American Tower Corporation (AMT)
NYSE: AMT · Real-Time Price · USD
194.73
+2.23 (1.16%)
At close: Sep 16, 2025, 4:00 PM EDT
195.08
+0.35 (0.18%)
After-hours: Sep 16, 2025, 7:55 PM EDT

American Tower Market Cap

American Tower has a market cap or net worth of $91.18 billion as of September 16, 2025. Its market cap has decreased by -12.66% in one year.

Market Cap
91.18B
Enterprise Value
134.32B
1-Year Change
-12.66%
Ranking
Category
Stock Price
$194.73

Market Cap Chart

Since December 1, 1998, American Tower's market cap has increased from $2.58B to $91.18B, an increase of 3,436.54%. That is a compound annual growth rate of 14.22%.

History

DateMarket Cap% Change
Sep 16, 202591.18B6.39%
Dec 31, 202485.71B-14.84%
Dec 29, 2023100.64B2.02%
Dec 30, 202298.64B-25.95%
Dec 31, 2021133.21B33.60%
Dec 31, 202099.71B-2.05%
Dec 31, 2019101.80B46.09%
Dec 31, 201869.68B13.89%
Dec 29, 201761.18B36.01%
Dec 30, 201644.99B9.55%
Dec 31, 201541.07B4.78%
Dec 31, 201439.19B24.41%
Dec 31, 201331.50B3.11%
Dec 31, 201230.55B29.52%
Dec 30, 201123.59B14.45%
Dec 31, 201020.61B18.80%
Dec 31, 200917.35B49.14%
Dec 31, 200811.63B-32.54%
Dec 31, 200717.24B8.70%
Dec 29, 200615.86B42.13%
Dec 30, 200511.16B165.65%
Dec 31, 20044.20B76.85%
Dec 31, 20032.38B244.13%
Dec 31, 2002690.30M-62.64%
Dec 31, 20011.85B-72.74%
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Market Capitalization

Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.

Formula: Market Cap = Stock Price * Shares Outstanding
Full Definition

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Market Cap Rankings