As of Aug 21, 2026, ATO's PEG ratio of 1.21 reflects its valuation relative to its growth rate. This result reflects a P/E ratio of 19.65 measured against EPS growth of 16.3%. When benchmarked against the trailing 4-quarter average of 1.74, ATO's PEG ratio reflects a 31% decrease.
ATO PEG ratio history
Atmos Energy's ten years historical PEG ratio averages out to 2.01. Compared to historical data, ATO's 1.21 PEG ratio represents a decrease of 40%. ATO hit its maximum PEG ratio of 7.36 during the Dec 2021 quarter over the last ten years. The Dec 2017 quarter marked the lowest reading at 0.3, indicating the most attractive growth-adjusted valuation.
Atmos Energy PEG ratio by year
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | 2.18 | 22.65 | 10.4% |
| 2024 | 1.69 | 20.31 | 12% |
| 2023 | 2 | 17.37 | 8.7% |
| 2022 | 1.89 | 18.16 | 9.6% |
| 2021 | 3.67 | 17.23 | 4.7% |
| 2020 | 1.6 | 19.55 | 12.2% |
| 2019 | N/A | 26.12 | -19.7% |
| 2018 | 0.38 | 17.29 | 45.6% |
| 2017 | 2.16 | 22.48 | 10.4% |
| 2016 | 2.34 | 22.03 | 9.4% |
| 2015 | 4.28 | 18.83 | 4.4% |
| 2014 | 1.55 | 16.11 | 10.4% |
| 2013 | 1.31 | 15.89 | 12.1% |
| 2012 | 3.12 | 14.97 | 4.8% |
| 2011 | 5.27 | 14.23 | 2.7% |
Atmos Energy PEG ratio by quarter (TTM)
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| Jun 2026 | 1.24 | 20.29 | 16.3% |
| Mar 2026 | 1.61 | 22.47 | 14% |
| Dec 2025 | 1.94 | 21.55 | 11.1% |
| Sep 2025 | 2.18 | 22.65 | 10.4% |
| Jun 2025 | 2.71 | 21.11 | 7.8% |
| Mar 2025 | 2.46 | 21.44 | 8.7% |
| Dec 2024 | 1.69 | 19.9 | 11.8% |
| Sep 2024 | 1.69 | 20.31 | 12% |
| Jun 2024 | 1.03 | 17.23 | 16.7% |
| Mar 2024 | 1.22 | 17.93 | 14.7% |
| Dec 2023 | 1.78 | 18.51 | 10.4% |
| Sep 2023 | 2 | 17.37 | 8.7% |
| Jun 2023 | 3.46 | 20.06 | 5.8% |
| Mar 2023 | 2.37 | 19.44 | 8.2% |
| Dec 2022 | 2.6 | 19.77 | 7.6% |
ATO average PEG ratio chart
ATO's PEG ratio today comes in under the 3, 5 and 10-year averages.
PEG comparison
With a PEG of 1.21, ATO ranks higher than the industry average but lower than the Utilities sector and its peers average. In comparison with the Utilities sector average of 1.31, Atmos Energy's PEG is 8% lower.
ATO EPS growth
ATO Price vs fair value
ATO PEG vs peers
Relative to its peers, ATO's PEG ratio is below OKE's and OGS's yet above NFG's. At 1.21, Atmos Energy's PEG ratio sits lower than the peer group average of 1.7.
Frequently asked questions
What is Atmos Energy's PEG ratio?
According to Aug 21, 2026 figures, ATO's PEG ratio stands at 1.21.
What is the 3-year average PEG ratio for Atmos Energy (ATO)?
ATO shows a 3-year average PEG ratio of 1.8.
What is the 5-year average PEG ratio for Atmos Energy (ATO)?
ATO shows a 5-year average PEG ratio of 2.57.
What is the highest PEG ratio for ATO?
ATO's PEG ratio topped out at 7.36 during the Dec 2021 quarter - the highest in ten years.
How does the current PEG ratio for ATO compare to its historical average?
At present, ATO's PEG ratio runs 40% lower than its 10-year historical average.
How is ATO's PEG ratio calculated (Atmos Energy PEG ratio formula)?
To calculate the PEG ratio, take the company's PE ratio and divide by its EPS growth rate (YoY TTM). As of Aug 21, 2026, Atmos Energy carries a PE ratio of 19.65. Earnings grew at 16.3% over the TTM period ending Jun 2026. Applying the formula, this yields a PEG ratio of 1.21. PEG RATIO(1.21) = PE RATIO(19.65) / EPS GROWTH(16.3%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.