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.
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.
Based on the latest closing prices, as of (filed ).
Ranked by market capitalization
- Exxon Mobil
XOMEnergy
$621.41B
As of
- Chevron
CVXEnergy
$373.05B
As of
- ConocoPhillips
COPEnergy
$142.71B
As of
- Williams Companies
WMBEnergy
$88.01B
As of
- SLB
SLBEnergy
$82.03B
As of
- Marathon Petroleum
MPCEnergy
$76.49B
As of
- Valero Energy
VLOEnergy
$75.96B
As of
- Phillips 66
PSXEnergy
$73.40B
As of
- EOG Resources
EOGEnergy
$73.39B
As of
- Kinder Morgan
KMIEnergy
$70.48B
As of
- Energy Transfer LP
ETEnergy
$66.72B
As of
- Baker Hughes
BKREnergy
$62.09B
As of
- Targa Resources
TRGPEnergy
$56.69B
As of
- Occidental Petroleum
OXYEnergy
$56.62B
As of
- ONEOK
OKEEnergy
$55.60B
As of
- Diamondback Energy
FANGEnergy
$54.19B
As of
- EQT
EQTEnergy
$33.62B
As of
- Halliburton
HALEnergy
$32.73B
As of
- First Solar
FSLREnergy
$29.98B
As of
- Devon Energy
DVNEnergy
$27.52B
As of
- Texas Pacific Land
TPLEnergy
$26.89B
As of
- Expand Energy
EXEEnergy
$22.03B
As of
- APA
APAEnergy
$12.93B
As of
- Enphase Energy
ENPHEnergy
$7.39B
As of
- National Fuel Gas
NFGEnergy
$7.36B
As of
- Sunrun
RUNEnergy
$3.19B
As of
- NACCO Industries
NCEnergy
$396.56M
As of
| # | Company | Sector | Market cap | As of |
|---|---|---|---|---|
| 1 | Exxon Mobil (XOM) | Energy | $621.41B | |
| 2 | Chevron (CVX) | Energy | $373.05B | |
| 3 | ConocoPhillips (COP) | Energy | $142.71B | |
| 4 | Williams Companies (WMB) | Energy | $88.01B | |
| 5 | SLB (SLB) | Energy | $82.03B | |
| 6 | Marathon Petroleum (MPC) | Energy | $76.49B | |
| 7 | Valero Energy (VLO) | Energy | $75.96B | |
| 8 | Phillips 66 (PSX) | Energy | $73.40B | |
| 9 | EOG Resources (EOG) | Energy | $73.39B | |
| 10 | Kinder Morgan (KMI) | Energy | $70.48B | |
| 11 | Energy Transfer LP (ET) | Energy | $66.72B | |
| 12 | Baker Hughes (BKR) | Energy | $62.09B | |
| 13 | Targa Resources (TRGP) | Energy | $56.69B | |
| 14 | Occidental Petroleum (OXY) | Energy | $56.62B | |
| 15 | ONEOK (OKE) | Energy | $55.60B | |
| 16 | Diamondback Energy (FANG) | Energy | $54.19B | |
| 17 | EQT (EQT) | Energy | $33.62B | |
| 18 | Halliburton (HAL) | Energy | $32.73B | |
| 19 | First Solar (FSLR) | Energy | $29.98B | |
| 20 | Devon Energy (DVN) | Energy | $27.52B | |
| 21 | Texas Pacific Land (TPL) | Energy | $26.89B | |
| 22 | Expand Energy (EXE) | Energy | $22.03B | |
| 23 | APA (APA) | Energy | $12.93B | |
| 24 | Enphase Energy (ENPH) | Energy | $7.39B | |
| 25 | National Fuel Gas (NFG) | Energy | $7.36B | |
| 26 | Sunrun (RUN) | Energy | $3.19B | |
| 27 | NACCO Industries (NC) | Energy | $396.56M |
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