ONE Gas (OGS) - Market capitalization

Market cap: C$6.45 Billion

As of December 2025 ONE Gas has a market cap of C$6.45 Billion. This makes ONE Gas the world's 3169th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of ONE Gas from 2014 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	C$6.45 B	14.07%
2024	C$5.65 B	20.66%
2023	C$4.68 B	-15.75%
2022	C$5.56 B	4.98%
2021	C$5.29 B	1.95%
2020	C$5.19 B	-19.41%
2019	C$6.44 B	13.15%
2018	C$5.69 B	18.38%
2017	C$4.81 B	7.22%
2016	C$4.49 B	23.47%
2015	C$3.63 B	45.98%
2014	C$2.49 B

End of Day market cap according to different sources

On Dec 9th, 2025 the market cap of ONE Gas was reported to be:

C$6.44 Billion

by Nasdaq

C$6.45 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Atmos Energy ATO	C$37.23 B	477.17%	🇺🇸 USA
NW Natural NWN	C$2.64 B	-58.95%	🇺🇸 USA
RGC Resources RGCO	C$0.31 B	-95.10%	🇺🇸 USA
CenterPoint Energy CNP	C$34.29 B	431.59%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of ONE Gas (OGS)

Market cap: C$6.45 Billion