The short version

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

  • Kinder Morgan is the larger company, worth $75.6B, about 1.2 times ONEOK.
  • ONEOK grew revenue faster over the last year (+52.8% vs +10.8%).
  • Kinder Morgan keeps more of each dollar of revenue as operating profit (29.1% vs 15.5%).
  • On earnings, ONEOK is the cheaper stock (17.2x vs 22.8x).
  • Kinder Morgan's price assumes faster free cash flow growth: about 9% 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.

MeasureKMIOKE
Market cap$75.6B$60.7B
Share price$32.49$89.80
Revenue (last fiscal year)$16.9B$33.6B
Free cash flow (last fiscal year)$2.9B$2.4B
Revenue growth, last year+10.8%+52.8%
Revenue growth per year, last 5 fiscal years+0.5%+19.4%
Operating margin29.1%15.5%
Net margin19.3%9.3%
Return on equity11.0%15.9%
P/E (trailing)22.8x17.2x
Price / free cash flow23.5x24.8x
EV / EBITDA14.3x10.9x
FCF growth the price implies8.5%7.8%
Dividend yield3.5%4.4%
Debt / equity1.30x1.98x
Fundamental gradeCC
Superinvestors holding it70
Insider purchases, last 12 months105

Results from SEC filings

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

Kinder Morgan

YearRevenueFree cash flowOp. margin
2021$16.6B$4.4B17.6%
2022$19.2B$3.3B21.2%
2023$15.3B$4.2B27.8%
2024$15.1B$3.0B29.0%
2025$16.9B$2.9B27.9%

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%

Where the revenue comes from

Kinder Morgan · by segments, 2025

Natural Gas Pipelines$10.4B68%
Products Pipelines$2.5B16%
Terminals$1.4B9%
CO2$1.1B7%

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%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open KMI in Investingly

Questions

Which is bigger, Kinder Morgan or ONEOK?

Kinder Morgan (KMI), at $75.6B against $60.7B.

Is KMI or OKE cheaper?

By trailing P/E, ONEOK (17.2x) is cheaper than Kinder Morgan (22.8x). A lower multiple can also mean the market expects less growth.

Which grows faster, KMI or OKE?

ONEOK: revenue grew +52.8% over the last year, against +10.8%.

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