Market Cap:
$89.07B-$449.52M(-0.50%)Summary
- As of today (October 4, 2025), AMT market cap is $89.07 billion, with a fall of -$449.52 million (-0.50%) during the most recent trading session on October 3, 2025.
- Over the past year, AMT market cap has dropped by -$18.07 billion (-16.87%).
- AMT market cap is now -35.55% below its all-time high of $138.19 billion.
Performance
AMT Market Cap Chart
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Highlights
Range
Related metrics
Market Cap Formula
Market Cap = Price ✕ Shares Outstanding
AMT Market Cap Trends
| PeriodPeriod | Market CapMarket Cap | PricePrice | Shares OutstandingShares Outstanding | Enterprise ValueEnterprise Value |
|---|---|---|---|---|
| 1D1 Day | -0.5% | -0.5% | +0.0% | -0.3% |
| 1M1 Month | -3.1% | -3.1% | - | -2.1% |
| 3M3 Months | -14.2% | -14.2% | - | -10.1% |
| 6M6 Months | -16.6% | -16.6% | - | -11.3% |
| YTDYTD | +3.9% | +3.7% | - | +3.5% |
| 1Y1 Year | -16.9% | -17.0% | +0.2% | -11.7% |
| 5Y5 Years | -17.6% | -21.8% | +5.4% | -4.3% |
AMT Market Cap Highs & Lows
| PeriodPeriod | HighHigh | Current vs Highvs High | LowLow | Current vs Lowvs Low | |
|---|---|---|---|---|---|
| 1M | 1-Month | $93B | -4.1% | $89B | at low |
| 3M | 3-Month | $109B | -18.1% | $89B | at low |
| 6M | 6-Month | $109B | -18.1% | $89B | at low |
| 1Y | 1-Year | $109B | -18.1% | $81B | +9.9% |
| 3Y | 3-Year | $113B | -21.5% | $74B | +21.2% |
| 5Y | 5-Year | $138B | -35.5% | $74B | +21.2% |
| All-Time | All-Time | $138B | -35.5% | $139M | >+9999.0% |
AMT Market Cap History
| Date | Value |
|---|---|
| 2025 | $89B(+3.9%) |
| 2024 | $86B(-14.8%) |
| 2023 | $101B(+2.0%) |
| 2022 | $99B(-26.0%) |
| 2021 | $133B(+33.7%) |
| 2020 | $100B(-2.0%) |
| 2019 | $102B(+45.9%) |
| 2018 | $70B(+14.0%) |
| 2017 | $61B(+35.5%) |
| 2016 | $45B(+9.9%) |
| 2015 | $41B(+4.8%) |
| 2014 | $39B(+24.4%) |
| 2013 | $32B(+3.2%) |
| 2012 | $31B(+29.2%) |
| Date | Value |
|---|---|
| 2011 | $24B(+14.7%) |
| 2010 | $21B(+18.6%) |
| 2009 | $17B(+49.2%) |
| 2008 | $12B(-31.7%) |
| 2007 | $17B(+9.3%) |
| 2006 | $16B(+39.3%) |
| 2005 | $11B(+164.7%) |
| 2004 | $4B(+77.6%) |
| 2003 | $2B(+244.5%) |
| 2002 | $691M(-62.6%) |
| 2001 | $2B(-73.0%) |
| 2000 | $7B(+43.6%) |
| 1999 | $5B(+48.7%) |
| 1998 | $3B |
FAQ
- What is American Tower Corporation market cap?
- What is the all-time high market cap for American Tower Corporation?
- What is AMT market cap year-to-date change?
- What is American Tower Corporation market cap year-on-year change?
What is American Tower Corporation market cap?
The current market cap of AMT is $89.07B
What is the all-time high market cap for American Tower Corporation?
American Tower Corporation all-time high market cap is $138.19B
What is AMT market cap year-to-date change?
American Tower Corporation market cap has changed by +$3.34B (+3.90%) since the beginning of the year
What is American Tower Corporation market cap year-on-year change?
Over the past year, AMT market cap has changed by -$18.07B (-16.87%)