The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • Williams Companies is the larger company, worth $91.4B, about 1.5 times ONEOK.
  • ONEOK grew revenue faster over the last year (+52.8% vs +9.8%).
  • Williams Companies keeps more of each dollar of revenue as operating profit (38.2% vs 15.5%).
  • On earnings, ONEOK is the cheaper stock (17.2x vs 32.8x).
  • Williams Companies's price assumes faster free cash flow growth: about 25% a year, against 8% for ONEOK (reverse DCF).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureOKEWMB
Market cap$60.7B$91.4B
Share price$89.80$72.67
Revenue (last fiscal year)$33.6B$11.9B
Free cash flow (last fiscal year)$2.4B$1.0B
Revenue growth, last year+52.8%+9.8%
Revenue growth per year, last 5 fiscal years+19.4%+3.0%
Operating margin15.5%38.2%
Net margin9.3%25.2%
Return on equity15.9%23.3%
P/E (trailing)17.2x32.8x
Price / free cash flow24.8x91.0x
EV / EBITDA10.9x15.0x
FCF growth the price implies7.8%25.1%
Dividend yield4.4%2.7%
Debt / equity1.98x3.43x
Fundamental gradeCC
Superinvestors holding it00
Insider purchases, last 12 months53

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

ONEOK

YearRevenueFree cash flowOp. margin
2021$16.5B$1.8B15.7%
2022$22.4B$1.7B12.5%
2023$17.7B$2.8B23.0%
2024$21.7B$2.9B23.0%
2025$33.6B$2.4B17.1%

Williams Companies

YearRevenueFree cash flowOp. margin
2021$10.6B$2.7B24.8%
2022$11.0B$2.6B27.5%
2023$10.9B$3.4B39.5%
2024$10.5B$2.4B31.8%
2025$11.9B$1.0B35.1%

Where the revenue comes from

ONEOK · by segments, 2025

Natural Gas Liquids$16.0B41%
Refined Products and Crude$13.0B34%
Natural Gas Gathering and Processing$7.7B20%
Natural Gas Pipelines$1.8B5%

Williams Companies · by segments, 2025

Transmission, Power & Gulf$5.4B43%
West$2.8B23%
Gas & NGL Marketing Services$2.2B17%
Northeast G & P$2.2B17%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open OKE in Investingly

Questions

Which is bigger, ONEOK or Williams Companies?

Williams Companies (WMB), at $91.4B against $60.7B.

Is OKE or WMB cheaper?

By trailing P/E, ONEOK (17.2x) is cheaper than Williams Companies (32.8x). A lower multiple can also mean the market expects less growth.

Which grows faster, OKE or WMB?

ONEOK: revenue grew +52.8% over the last year, against +9.8%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.