What is ATO's five-year median P/E?

The median, or middle weekly reading, is 20.6× over the last five years. Available history contains 533 weekly observations from Aug 8, 2016 to Oct 19, 2026.

Does a low historical rank mean a stock is a buy?

No. The rank describes a stock’s own history. Changes in growth, financial risk and the business can change the multiple investors pay. P/E uses earnings and P/S uses revenue from the previous twelve months.

Atmos Energy (ATO) valuation history

Within its usual range

As of Oct 22, 2026

ATO's P/E of 19.9x is lower than 68% of its available weekly readings from the last five years.

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P/E at year-end

Last weekly reading of each completed year. Rank runs from lowest (0%) to highest (100%) within the five years available on that date.

ATO year-end valuation history
Reading date	P/E	5-year rank
Dec 29, 2025	22.6×	91%
Dec 30, 2024	20.3×	60%
Dec 25, 2023	19.0×	25%
Dec 26, 2022	19.9×	47%
Dec 27, 2021	20.4×	47%
Dec 28, 2020	19.4×	26%
Dec 30, 2019	25.4×	84%
Dec 31, 2018	16.7×	21%
Dec 25, 2017	22.9×	71%
Dec 26, 2016	21.8×	Short history

Peers on the same measure

Stock	P/E	5-year rank
AEEAmeren	18.8×	23%
AESAES Corporation	5.7×	13%
AWKAmerican Water Works	23.4×	30%
CEGConstellation Energy	26.4×	34%

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Utilities AI Power Stocks with Low P/E Ratios and Steady Revenue Growth Stocks Below Their 5-Year Median P/E Stocks Near Their Lowest P/E Ratios in 5 Years

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About this history

What is ATO's current P/E?: ATO's P/E of 19.9x is lower than 68% of its available weekly readings from the last five years.
What is ATO's five-year median P/E?: The median, or middle weekly reading, is 20.6× over the last five years. Available history contains 533 weekly observations from Aug 8, 2016 to Oct 19, 2026.
Does a low historical rank mean a stock is a buy?: No. The rank describes a stock’s own history. Changes in growth, financial risk and the business can change the multiple investors pay. P/E uses earnings and P/S uses revenue from the previous twelve months.