Atmos Energy Corporation
ATO | NYSE
$159.59
-$0.71 (-0.44%)
Sep 21, 2026, 12:32 PM ET · Market open
Market Cap History History
Annual Market Cap Change Annual Change
| Date | Market Cap | Change | % Change |
|---|---|---|---|
| Sep 17, 2026 | $26.99B | $262.62M | +0.98% |
| Dec 25, 2025 | $26.72B | $5.41B | +25.41% |
| Dec 26, 2024 | $21.31B | $4.08B | +23.67% |
| Dec 28, 2023 | $17.23B | $1.44B | +9.10% |
| Dec 29, 2022 | $15.79B | $1.79B | +12.76% |
| Dec 30, 2021 | $14.01B | $1.88B | +15.53% |
| Dec 30, 2020 | $12.12B | -$1.02B | -7.77% |
| Dec 26, 2019 | $13.14B | $2.88B | +28.11% |
| Dec 27, 2018 | $10.26B | $1.08B | +11.83% |
| Dec 28, 2017 | $9.17B | $1.41B | +18.19% |
| Dec 29, 2016 | $7.76B | $1.29B | +19.88% |
| Dec 30, 2015 | $6.48B | $804.13M | +14.18% |
| Dec 25, 2014 | $5.67B | $1.58B | +38.51% |
| Dec 26, 2013 | $4.09B | $965.08M | +30.84% |
| Dec 27, 2012 | $3.13B | $119.16M | +3.96% |
| Dec 29, 2011 | $3.01B | $199.41M | +7.10% |
| Dec 30, 2010 | $2.81B | $101.29M | +3.74% |
| Dec 30, 2009 | $2.71B | $576.87M | +27.05% |
| Dec 25, 2008 | $2.13B | -$368.67M | -14.74% |
| Dec 27, 2007 | $2.5B | -$138.72M | -5.25% |
| Dec 28, 2006 | $2.64B | n/a | n/a |
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