ONE Gas (OGS) - Market capitalization

Market cap: HK$35.84 Billion

As of December 2025 ONE Gas has a market cap of HK$35.84 Billion. This makes ONE Gas the world's 3198th 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	HK$35.84 B	17.16%
2024	HK$30.59 B	10.86%
2023	HK$27.59 B	-13.84%
2022	HK$32.03 B	-1.2%
2021	HK$32.42 B	2.6%
2020	HK$31.59 B	-17.83%
2019	HK$38.45 B	17.37%
2018	HK$32.76 B	9.51%
2017	HK$29.92 B	15.47%
2016	HK$25.91 B	27.52%
2015	HK$20.32 B	22.03%
2014	HK$16.65 B

End of Day market cap according to different sources

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

HK$36.23 Billion

by Nasdaq

HK$36.24 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Atmos Energy ATO	HK$209.85 B	485.46%	🇺🇸 USA
NW Natural NWN	HK$14.90 B	-58.42%	🇺🇸 USA
RGC Resources RGCO	HK$1.80 B	-94.96%	🇺🇸 USA
CenterPoint Energy CNP	HK$190.39 B	431.17%	🇺🇸 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: HK$35.84 Billion