Largest energy companies by market cap
The 10 companies we cover Energy by SEC SIC code, largest market cap first. Prices are the fundamentals screener's build of 2026-11-09; shares outstanding from each company's latest filing. An order by a figure is the figure, sorted: nothing here says a company is a better or worse holding.
Every figure on this page is free to read, dated and sourced; no column is held back for a paid plan.
Median market cap: 3.7 billion USD over 10 companies, 10 distinct values.
| Rank | Company⊙EVIDENCE — filed/published fact SourceSEC SIC code from the company's EDGAR submissions record, grouped into sectors by lib/sic-sector As ofissuer records read up to 90 days before 2026-11-09 Open the source document → | Market cap⊙INFERENCE — derived by arithmetic SourceMedian of each member's filed shares outstanding times the screener's end-of-day price As ofthe fundamentals screener's build of 2026-11-09 HowShares outstanding from the latest filing times the fundamentals screener's end-of-day price. | As of |
|---|---|---|---|
| 1 | XOM ExxonMobil | 687.5 billion USD | 2026-11-09 |
| 2 | CVX Chevron | 417.9 billion USD | 2026-11-09 |
| 3 | COP ConocoPhillips | 161.1 billion USD | 2026-11-09 |
| 4 | MGY | 6.3 billion USD | 2026-11-09 |
| 5 | CRK | 3.9 billion USD | 2026-11-09 |
| 6 | PARR | 3.4 billion USD | 2026-11-09 |
| 7 | TALO | 2.5 billion USD | 2026-11-09 |
| 8 | NOG | 2.4 billion USD | 2026-11-09 |
| 9 | CLB | 405 million USD | 2026-11-09 |
| 10 | REI | 289 million USD | 2026-11-09 |
Who is in the group: sector is our grouping of the four-digit SIC code on each company's own EDGAR record, the grouping the S&P 500 map uses; it is not GICS, which is licensed.
The same companies by revenue growth, net margin.
Market cap in other groups: technology, financial, consumer, industrial, healthcare, NYSE-listed, Nasdaq-listed, Delaware-incorporated, non-Delaware US.
Every ranking: the ranking grid. Every list: stock lists.