Current
$28.52B
5-Year Average
$19.29B
All-Time High
$31.70B
All-Time Low
$755.65M
Market cap daily chart for Atmos Energy (ATO)
Jun 16, 2021 – Jun 12, 2026 · 1,254 trading days
Market Cap growth chart for Atmos Energy (ATO) from 1985 to 2026
Latest: +4.0%
Market Cap history table for Atmos Energy (ATO) from 1985 to 2026
| 2026 | $28.52B | +4.0% | +$1.10B | ||
| 2025 | $27.42B | +29.5% | +$6.24B | ||
| 2024 | $21.18B | +37.7% | +$5.80B | ||
| 2023 | $15.38B | +9.3% | +$1.31B | ||
| 2022 | $14.07B | +22.8% | +$2.61B | ||
| 2021 | $11.45B | -2.5% | −$293.98M | ||
| 2020 | $11.75B | -12.2% | −$1.63B | ||
| 2019 | $13.38B | +28.3% | +$2.95B | ||
| 2018 | $10.43B | +17.2% | +$1.53B | ||
| 2017 | $8.90B | +15.4% | +$1.19B | ||
| 2016 | $7.71B | +30.0% | +$1.78B | ||
| 2015 | $5.93B | +27.3% | +$1.27B | ||
| 2014 | $4.66B | +19.2% | +$749.93M | ||
| 2013 | $3.91B | +19.7% | +$642.93M | ||
| 2012 | $3.26B | +10.9% | +$321.39M | ||
| 2011 | $2.94B | +8.8% | +$238.31M | ||
| 2010 | $2.70B | +4.2% | +$110.11M | ||
| 2009 | $2.59B | +7.9% | +$190.20M | ||
| 2008 | $2.40B | -3.3% | −$81.90M | ||
| 2007 | $2.48B | +6.9% | +$161.25M | ||
| 2006 | $2.32B | +4.1% | +$91.60M | ||
| 2005 | $2.23B | +62.8% | +$861.35M | ||
| 2004 | $1.37B | +23.1% | +$257.62M | ||
| 2003 | $1.11B | +25.5% | +$226.24M | ||
| 2002 | $886.88M | +7.4% | +$60.74M | ||
| 2001 | $826.14M | +26.7% | +$174.35M | ||
| 2000 | $651.78M | -12.4% | −$91.88M | ||
| 1999 | $743.66M | -13.3% | −$114.02M | ||
| 1998 | $857.69M | +17.3% | +$126.64M | ||
| 1997 | $731.04M | +97.2% | +$360.42M | ||
| 1996 | $370.63M | +24.1% | +$71.91M | ||
| 1995 | $298.71M | +10.8% | +$29.00M | ||
| 1994 | $269.71M | +22.5% | +$49.59M | ||
| 1993 | $220.12M | +43.1% | +$66.31M | ||
| 1992 | $153.81M | +11.3% | +$15.56M | ||
| 1991 | $138.25M | +33.8% | +$34.93M | ||
| 1990 | $103.32M | +2.5% | +$2.48M | ||
| 1989 | $100.84M | +34.5% | +$25.87M | ||
| 1988 | $74.97M | +32.1% | +$18.21M | ||
| 1987 | $56.76M | -8.7% | −$5.38M | ||
| 1986 | $62.14M | +26.8% | +$13.14M | ||
| 1985 | $49.00M | — | — |
- 2026$28.52B+4.0%
- 2025$27.42B+29.5%
- 2024$21.18B+37.7%
- 2023$15.38B+9.3%
- 2022$14.07B+22.8%
- 2021$11.45B-2.5%
- 2020$11.75B-12.2%
- 2019$13.38B+28.3%
- 2018$10.43B+17.2%
- 2017$8.90B+15.4%
- 2016$7.71B+30.0%
- 2015$5.93B+27.3%
- 2014$4.66B+19.2%
- 2013$3.91B+19.7%
- 2012$3.26B+10.9%
- 2011$2.94B+8.8%
- 2010$2.70B+4.2%
- 2009$2.59B+7.9%
- 2008$2.40B-3.3%
- 2007$2.48B+6.9%
- 2006$2.32B+4.1%
- 2005$2.23B+62.8%
- 2004$1.37B+23.1%
- 2003$1.11B+25.5%
- 2002$886.88M+7.4%
- 2001$826.14M+26.7%
- 2000$651.78M-12.4%
- 1999$743.66M-13.3%
- 1998$857.69M+17.3%
- 1997$731.04M+97.2%
- 1996$370.63M+24.1%
- 1995$298.71M+10.8%
- 1994$269.71M+22.5%
- 1993$220.12M+43.1%
- 1992$153.81M+11.3%
- 1991$138.25M+33.8%
- 1990$103.32M+2.5%
- 1989$100.84M+34.5%
- 1988$74.97M+32.1%
- 1987$56.76M-8.7%
- 1986$62.14M+26.8%
- 1985$49.00M—
Market Cap values are taken from Atmos Energy's reported income statements (share counts) and end-of-day prices (quarterly 10-Q and annual 10-K filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the filing date. YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
About Market Cap at Atmos Energy (ATO)
According to Atmos Energy's latest reported financial statements, the company's latest reported market cap is $31.00B. Market capitalization is the total dollar value of all outstanding shares — shares outstanding × stock price — and the standard measure of a company's equity value. On this page, historical market cap snaps filing-period share counts to closing prices on or before each statement date (not intraday tick data).
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
As of the 2026 fiscal year, Atmos Energy (ATO) reported market cap of $28.52B – edged up 4.0% year-over-year.
Atmos Energy market cap has grown for 5 consecutive years, with a +20.0% compound annual growth rate over 2021–2026 (5 years).
2026 marks the peak market cap at $28.52B, with the historical low of $49.00M recorded in 1985.
Atmos Energy Market Cap by Year
Atmos Energy Market Cap 2026: $28.52B
In 2026, Atmos Energy reported market cap of $28.52B, edged up 4.0% from 2025. This figure represents the highest annual value in the available history.
Atmos Energy Market Cap 2025: $27.42B
Atmos Energy market cap in 2025 was $27.42B, grew 29.5% from 2024.
Atmos Energy Market Cap 2024: $21.18B
2024's market cap for Atmos Energy came in at $21.18B, surged 37.7% from 2023.
Atmos Energy Market Cap 2023: $15.38B
Atmos Energy posted market cap of $15.38B in 2023, grew 9.3% from 2022.
Atmos Energy Market Cap 2022: $14.07B
Atmos Energy market cap in 2022 was $14.07B.
See more financial history for Atmos Energy (ATO).
Sector peers by Market Cap
Utilities peers of Atmos Energy (ATO), ranked by their latest market cap
| $252.77B | |
| $179.32B | |
| $105.97B | |
| $97.43B | |
| $91.66B | |
| $70.31B | |
| $60.33B | |
| $59.73B |
- $252.77B
- $179.32B
- $105.97B
- $97.43B
- $91.66B
- $60.33B
- $59.73B
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Atmos Energy (ATO) Key Financials
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