Ticker League

Largest US Oil & Gas Companies by Market Cap

Upstream, midstream and refining names in the domestic Energy slice; non-U.S. listing profiles sit outside this set · as of June 11, 2026

Peer set · US EnergyCountry: US · USA

Ranked by market capitalization

What this list includes

This list is limited to companies whose profile has sector Energy and country code US — integrated producers, E&P, midstream, refining, and related services in our data. Aramco, European majors, and other non-U.S. Energy names are excluded by design. Market cap is from the latest prices we store.

Third-party "oil & gas" screens may use different taxonomies. For a worldwide cap table without a country filter, use the full market cap ranking. For revenue-based size, see the revenue ranking.

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