Start with its own history
At 20.48×, ATO is 0.9% above its 10-observation annual average. A lower multiple can reflect a lower price, higher earnings, or weaker growth expectations—not necessarily a bargain.
NYSE · ATORegulated GasUpdated Nov 2, 2026
Atmos Energy Corporation P/E ratio
Current valuation, historical context, and peer comparisons.
Current P/E ratio
20.48×
0.9% abovethe 10-year annual average
Share price172.24
÷Earnings per share8.41
Price and EPS in quote currency. Calculation details
Investors are paying 20.48 for every 1 of reported earnings per share.
P/E over time
2016 – 2025
Annual P/ESelected-period average 20.29×
3-year average20.11×3 positive annual observations
5-year average19.13×5 positive annual observations
10-year average20.29×10 positive annual observations
Peer median · TTM15.52×8 peers with positive P/E
Historical P/E ratios
Annual period-end data · 25 observations
| Period end | P/E | Change |
|---|---|---|
| Sep 30, 2025 | 22.65× | +11.5% |
| Sep 30, 2024 | 20.31× | +16.9% |
| Sep 30, 2023 | 17.37× | -4.2% |
| Sep 30, 2022 | 18.12× | +5.2% |
| Sep 30, 2021 | 17.23× | -11.9% |
| Sep 30, 2020 | 19.55× | -25.2% |
| Sep 30, 2019 | 26.12× | +52.9% |
| Sep 30, 2018 | 17.08× | -24.0% |
View all 25 annual observations +
| Period end | P/E | Change |
|---|---|---|
| Sep 30, 2017 | 22.48× | +2.0% |
| Sep 30, 2016 | 22.03× | +17.0% |
| Sep 30, 2015 | 18.83× | +16.8% |
| Sep 30, 2014 | 16.11× | +1.4% |
| Sep 30, 2013 | 15.89× | +7.6% |
| Sep 30, 2012 | 14.77× | +3.8% |
| Sep 30, 2011 | 14.23× | +8.0% |
| Sep 30, 2010 | 13.18× | -1.8% |
| Sep 30, 2009 | 13.42× | +1.8% |
| Sep 30, 2008 | 13.18× | -11.6% |
| Sep 30, 2007 | 14.91× | -4.4% |
| Sep 30, 2006 | 15.60× | -6.7% |
| Sep 30, 2005 | 16.72× | -9.1% |
| Sep 30, 2004 | 18.39× | +6.8% |
| Sep 30, 2003 | 17.22× | +14.6% |
| Sep 30, 2002 | 15.03× | +3.5% |
| Sep 30, 2001 | 14.53× | N/M |
Change is relative to the preceding observation. N/M values are excluded from averages.
How ATO compares
Company P/E vs. peer trailing-12-month ratios
| Company | P/E ratio |
|---|---|
 ATO This stockAtmos Energy Corporation | 20.48× |
 OGSONE Gas, Inc. | 16.84× |
 UGIUGI Corporation | 12.34× |
 NJRNew Jersey Resources Corporation | 14.64× |
 SRSpire Inc. | 9.82× |
 SWXSouthwest Gas Holdings, Inc. | 12.92× |
 CPKChesapeake Utilities Corporation | 21.64× |
 NINiSource Inc | 22.61× |
 NWNNorthwest Natural Holding Company | 16.39× |
Peers are selected by the data provider. Business models and earnings definitions can differ.
Put the numbers in context
What does ATO’s P/E tell you?
Compare like with like
The median of the 8 positive peer ratios above is 15.52×. Check growth, margins, debt, and earnings quality before interpreting the gap. A faster-growing business may justify a higher multiple.
Check what drives earnings
One-off gains can temporarily lower P/E; unusual charges can raise it. Reported earnings and forward estimates answer different questions. Pair this view with return on equity and liquidity for a fuller picture.
Keep your research connected
Take ATO into your spreadsheet
Pull historical P/E into Excel or Google Sheets with Wisesheets. Build your own comparisons alongside the rest of your financial model.
Explore WisesheetsQuarterly P/E · latest quarterLQ selects the latest reported quarter. Requires the Wisesheets add-in. See available data
=WISE("ATO", "PE Ratio", "LQ")Sources & calculation methodology
Current P/E
Share price 172.24 ÷ EPS 8.41 = 20.48×. Data is supplied by Financial Modeling Prep through Wisesheets. Quote feed updated Nov 2, 2026; this is not a real-time trading quote.
History & averages
Annual and quarterly P/E observations are provided separately from the current quote. Averages use the latest 3, 5, or 10 annual observations, excluding missing and nonpositive ratios. Pre-IPO observations are omitted. These are period-end observations, not daily averages.
Data definitions and limitations
The current quote feed does not specify the exact EPS filing-period end or whether EPS is basic or diluted. We do not label it as forward P/E. Peer ratios are explicitly trailing-12-month (TTM) values. Historical observations do not include independently verified price and EPS inputs. Sources may update on different schedules; rounded inputs can produce small calculation differences. Historical comparisons describe past pricing, not an estimate of fair value.
ATO P/E ratio: common questions
The essentials behind the numbers.
Atmos Energy Corporation's current P/E is 20.48× based on the quote data last updated Nov 2, 2026. It represents the share price divided by reported earnings per share. Prices and earnings may refresh on different schedules.
Annual P/E uses earnings for a completed fiscal year. Trailing-12-month (TTM) P/E uses the latest four quarters, while forward P/E uses forecast earnings. These are not interchangeable. This page labels peer ratios as TTM and shows dated annual or quarterly historical observations; it does not show forward estimates.
N/M means not meaningful: the feed has no positive P/E for that observation. Negative or zero earnings should not be ranked as a low positive valuation multiple. N/M observations are excluded from the averages shown above.
Divide the share price by earnings per share (EPS). For example, a share price of 100 and EPS of 5 gives a P/E of 20×. This page uses the price and EPS supplied together in the quote when both are positive.
Price timestamps, EPS definitions, share classes, adjustments, and fiscal periods can differ. A forward P/E also uses forecast earnings rather than reported earnings. Compare the inputs and as-of dates before comparing two displayed ratios.
Not necessarily. The average describes previous market pricing, not fair value. Changes in earnings quality, growth expectations, debt, accounting, and business risk can justify a different multiple today.