ONEOK Inc (NYSE:OKE) — Market Cap & Net Worth

$55.00 Billion USD  · Rank #474

Market Cap & Net Worth: ONEOK Inc (OKE)

ONEOK Inc (NYSE:OKE) has a market capitalization of $55.00 Billion ($55.00 Billion) as of May 2, 2026. Listed on the NYSE stock exchange, this USA-based company holds position #474 globally and #236 in its home market, demonstrating a 3.61% increase in market value over the past year.

Market capitalization, also known as net worth in stock markets, is calculated by multiplying ONEOK Inc's stock price $90.36 by its total outstanding shares 629231557 (629.23 Million). Analyse ONEOK Inc cash conversion from operations to see how efficiently the company converts income to cash.

ONEOK Inc Market Cap History: 2015 to 2026

ONEOK Inc's market capitalization history from 2015 to 2026. Data shows growth from $8.74 Billion to $56.86 Billion (14.75% CAGR).

Index Memberships

ONEOK Inc is a constituent of 2 market indices:

Index Total Market Cap Weight (%) Rank by Market Cap
Dow Jones Oil & Gas
DJUSEN
$2.22 Trillion 2.48% #11 of 77
S&P 500 Index
GSPC
$59.46 Trillion 0.11% #193 of 503

Weight: ONEOK Inc's market cap as a percentage of total index value. Rank: Position among all constituents by market cap.

ONEOK Inc Market Cap to Earnings & Revenue Ratios Timeline

This chart shows how ONEOK Inc's valuation ratios have evolved. The Price to Sales (P/S) ratio compares market cap to revenue, while the Price to Earnings (P/E) ratio compares market cap to net income. Lower values may indicate a more undervalued company relative to its financial performance.

Latest Price to Sales (P/S) Ratio

2.92x

ONEOK Inc's market cap is 2.92 times its annual revenue

Industry average: 6.48x Lower than industry average

Latest Price to Earnings (P/E) Ratio

20.82x

ONEOK Inc's market cap is 20.82 times its annual earnings

Industry average: 18.99x Higher than industry average

What These Ratios Tell Investors:

  • Price to Sales (P/S) Ratio: Shows how much investors are paying for each dollar of the company's sales. Lower P/S ratios may indicate undervaluation.
  • Price to Earnings (P/E) Ratio: Shows how much investors are paying for each dollar of the company's earnings. This is one of the most common valuation metrics.
  • Trends in these ratios over time can indicate changing investor sentiment about the company's future growth prospects.
  • Industry comparison provides context for whether the company is valued higher or lower than peers.
Year Market Cap (USD) Revenue (USD) Net Income (USD) P/S Ratio P/E Ratio
2015 $8.74 Billion $7.68 Billion $244.98 Million 1.14x 35.68x
2016 $21.82 Billion $8.89 Billion $352.04 Million 2.45x 61.97x
2017 $21.36 Billion $12.24 Billion $387.84 Million 1.74x 55.06x
2018 $22.69 Billion $12.62 Billion $1.15 Billion 1.80x 19.71x
2019 $33.53 Billion $10.11 Billion $1.28 Billion 3.32x 26.23x
2020 $18.98 Billion $8.46 Billion $612.81 Million 2.24x 30.96x
2021 $31.26 Billion $17.27 Billion $1.50 Billion 1.81x 20.84x
2022 $37.17 Billion $22.87 Billion $1.72 Billion 1.63x 21.58x
2023 $42.09 Billion $17.68 Billion $2.66 Billion 2.38x 15.83x
2024 $63.17 Billion $21.64 Billion $3.04 Billion 2.92x 20.82x

Competitor Companies of OKE by Market Capitalization

Companies near ONEOK Inc in the global market cap rankings as of May 2, 2026.

Key companies related to ONEOK Inc by market ranking:

  • Enbridge Inc (TO:ENB): Ranked #198 globally with a market cap of $117.71 Billion USD ( CA$162.72 Billion CAD).
  • Williams Companies Inc (NYSE:WMB): Ranked #288 globally with a market cap of $89.05 Billion USD.
  • Enterprise Products Partners LP (NYSE:EPD): Ranked #328 globally with a market cap of $79.38 Billion USD.
  • Kinder Morgan Inc (NYSE:KMI): Ranked #387 globally with a market cap of $68.95 Billion USD.
Market capitalization comparison (in billions USD)
Rank Company Symbol Market Cap Price
#198 Enbridge Inc TO:ENB $117.71 Billion CA$74.58
#288 Williams Companies Inc NYSE:WMB $89.05 Billion $75.54
#328 Enterprise Products Partners LP NYSE:EPD $79.38 Billion $38.03
#387 Kinder Morgan Inc NYSE:KMI $68.95 Billion $32.53

ONEOK Inc Historical Marketcap From 2015 to 2026

Between 2015 and today, ONEOK Inc's market cap moved from $8.74 Billion to $ 56.86 Billion, with a yearly change of 14.75%.

Year Market Cap Change (%)
2026 $56.86 Billion +22.94%
2025 $46.25 Billion -26.79%
2024 $63.17 Billion +50.10%
2023 $42.09 Billion +13.24%
2022 $37.17 Billion +18.90%
2021 $31.26 Billion +64.74%
2020 $18.98 Billion -43.41%
2019 $33.53 Billion +47.76%
2018 $22.69 Billion +6.27%
2017 $21.36 Billion -2.11%
2016 $21.82 Billion +149.62%
2015 $8.74 Billion --

End of Day Market Cap According to Different Sources

On May 2nd, 2026 the market cap of ONEOK Inc was reported to be:

Source Market Cap
Yahoo Finance $55.00 Billion USD
MoneyControl $55.00 Billion USD
MarketWatch $55.00 Billion USD
marketcap.company $55.00 Billion USD
Reuters $55.00 Billion USD

Market cap values may vary slightly between sources due to differences in calculation methods, timing, and data refresh rates.

About ONEOK Inc

NYSE:OKE USA Oil & Gas Midstream
Market Cap
$56.86 Billion
Market Cap Rank
#474 Global
#236 in USA
Share Price
$90.36
Change (1 day)
-2.27%
52-Week Range
$64.31 - $93.96
All Time High
$117.05
About

ONEOK, Inc. operates as a midstream service provider of gathering, processing, fractionation, transportation, storage, and marine export services in the United States. It operates in four segments: Natural Gas Gathering and Processing; Natural Gas Liquids; Natural Gas Pipelines; and Refined Products and Crude. The company owns natural gas gathering pipelines and processing plants in the Mid-Conti… Read more