TotalMarketCap

Market cap

$55.397 B

$87.88 +0.83%

Close of 5 Oct 2026

As of 5 Oct 2026, Oneok (OKE) has a market capitalization of $55.4B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$33.6B

#130 by revenue

Earnings

$3.39B

#145 by earnings

Shares outstanding

630,369,667

Latest filing cover page

P/E ratio

16.3

Cap ÷ net income

Oil & Gas Production, ranked by market cap

All 116 →
  1. #7Cenovus EnergyCVE$60.8B
  2. #8Occidental PetroleumOXY$58.1B
  3. #9OneokOKE$55.4B
  4. #10Devon EnergyDVN$52.4B
  5. #11Diamondback EnergyFANG$51.7B

What if Oneok were worth as much as…

Open the what-if tool →

Or at a round number

Where these numbers come from

Share counts and financials for Oneok are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 6 Oct 2026. Read the methodology.