Oneok (OKE) - Market capitalization

Market cap: S$73.33 Billion

As of August 2026 Oneok has a market cap of S$73.33 Billion. This makes Oneok the world's 438th 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 Oneok from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	S$73.33 B	24.5%
2025	S$58.90 B	-26.44%
2024	S$80.07 B	48.22%
2023	S$54.02 B	37.24%
2022	S$39.36 B	11.13%
2021	S$35.42 B	57%
2020	S$22.56 B	-46.48%
2019	S$42.15 B	38.99%
2018	S$30.33 B	10.65%
2017	S$27.41 B	56.71%
2016	S$17.49 B	139.1%
2015	S$7.31 B	-46.62%
2014	S$13.70 B	-15.8%
2013	S$16.27 B	51.93%
2012	S$10.71 B	-7.34%
2011	S$11.56 B	51.49%
2010	S$7.63 B	15.17%
2009	S$6.62 B	51.77%
2008	S$4.36 B	-34.83%
2007	S$6.69 B	-8.46%
2006	S$7.31 B	69.01%
2005	S$4.32 B	-10.29%
2004	S$4.82 B	35.16%
2003	S$3.57 B	43.68%
2002	S$2.48 B	25.43%
2001	S$1.98 B	-19.71%
2000	S$2.46 B	99.61%
1999	S$1.23 B	-34.26%
1998	S$1.88 B	-11.59%
1997	S$2.12 B	85.58%
1996	S$1.14 B

End of Day market cap according to different sources

On Jul 31st, 2026 the market cap of Oneok was reported to be:

S$73.35 Billion

by Nasdaq

S$73.33 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Atmos Energy ATO	S$36.96 B	-49.59%	🇺🇸 USA
Sempra SRE	S$74.19 B	1.18%	🇺🇸 USA
Western Midstream WES	S$24.66 B	-66.37%	🇺🇸 USA
UGI Corporation UGI	S$9.92 B	-86.46%	🇺🇸 USA
Southwest Gas SWX	S$8.29 B	-88.69%	🇺🇸 USA
Sea Limited SE	S$83.79 B	14.27%	🇸🇬 Singapore
National Fuel Gas NFG	S$10.02 B	-86.33%	🇺🇸 USA
EQT Corporation EQT	S$42.72 B	-41.74%	🇺🇸 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 Oneok (OKE)

Market cap: S$73.33 Billion