United States

Top 310 largest US Companies in the Energy sector by Market Cap

This is the list of the largest public listed companies in the Energy sector from the United States by market capitalization with links to their reference stock and industry.

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Top Energy Companies from the United States as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
1 Exxon Mobil Corporation $522.89 B United States US Energy US Oil & Gas Integrated
2 Chevron Corporation $314.11 B United States US Energy US Oil & Gas Integrated
3 ConocoPhillips $120.77 B United States US Energy US Oil & Gas E&P
4 The Williams Companies, Inc. $74.31 B United States US Energy US Oil & Gas Midstream
5 Enterprise Products Partners L.P. $69.63 B United States US Energy US Oil & Gas Midstream
6 Kinder Morgan, Inc. $61.65 B United States US Energy US Oil & Gas Midstream
7 Schlumberger Limited $60.06 B United States US Energy US Oil & Gas Equipment & Services
8 EOG Resources, Inc. $58.57 B United States US Energy US Oil & Gas E&P
9 Energy Transfer LP $56.96 B United States US Energy US Oil & Gas Midstream
10 MPLX LP $54.88 B United States US Energy US Oil & Gas Midstream
11 Pioneer Natural Resources Company $53.57 B

(Jan. 1, 2024)

 United States US Energy US Oil & Gas E&P
12 Phillips 66 $52.77 B United States US Energy US Oil & Gas Refining & Marketing
13 Valero Energy Corporation $51.35 B United States US Energy US Oil & Gas Refining & Marketing
14 Marathon Petroleum Corporation $50.21 B United States US Energy US Oil & Gas Refining & Marketing
15 ONEOK, Inc. $46.82 B United States US Energy US Oil & Gas Midstream
16 Baker Hughes Company $46.52 B United States US Energy US Oil & Gas Equipment & Services
17 Hess Corporation $44.39 B

(July 1, 2025)

 United States US Energy US Oil & Gas E&P
18 Diamondback Energy, Inc. $44.10 B United States US Energy US Oil & Gas E&P
19 Cheniere Energy, Inc. $43.47 B United States US Energy US Oil & Gas Midstream
20 Occidental Petroleum Corporation $41.75 B United States US Energy US Oil & Gas E&P
21 Targa Resources Corp. $40.19 B United States US Energy US Oil & Gas Midstream
22 EQT Corporation $33.36 B United States US Energy US Oil & Gas E&P
23 Cheniere Energy Partners, L.P. $26.14 B United States US Energy US Oil & Gas Midstream
24 Halliburton Company $25.24 B United States US Energy US Oil & Gas Equipment & Services
25 Devon Energy Corporation $24.04 B United States US Energy US Oil & Gas E&P
26 Texas Pacific Land Corporation $20.54 B United States US Energy US Oil & Gas E&P
27 Contura Energy, Inc. $20.30 B United States US Energy US Thermal Coal
28 Texas Pacific Land Corp $19.97 B United States US Energy US Oil & Gas E&P
29 Coterra Energy Inc. $19.24 B

(July 1, 2023)

 United States US Energy US Oil & Gas E&P
30 Western Midstream Partners, LP $16.21 B United States US Energy US Oil & Gas Midstream

Top Energy Companies from the United States as of Jan. 01, 2026

1. ExxonMobil

Company Profile: Exxon Mobil Corporation
Market Cap (USD): $522.89 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

2. Chevron

Company Profile: Chevron Corporation
Market Cap (USD): $314.11 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Integrated

3. ConocoPhillips

Company Profile: ConocoPhillips
Market Cap (USD): $120.77 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

4. The Williams Companies, Inc.

Company Profile: The Williams Companies, Inc.
Market Cap (USD): $74.31 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

5. Enterprise Products Partners L.P.

Company Profile: Enterprise Products Partners L.P.
Market Cap (USD): $69.63 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

6. Kinder Morgan, Inc.

Company Profile: Kinder Morgan, Inc.
Market Cap (USD): $61.65 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

7. Schlumberger Limited

Company Profile: Schlumberger Limited
Market Cap (USD): $60.06 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Equipment & Services

8. EOG Resources, Inc.

Company Profile: EOG Resources, Inc.
Market Cap (USD): $58.57 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

9. Energy Transfer LP

Company Profile: Energy Transfer LP
Market Cap (USD): $56.96 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

10. MPLX LP

Company Profile: MPLX LP
Market Cap (USD): $54.88 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

11. Pioneer Natural Resources Company

Company Profile: Pioneer Natural Resources Company
Market Cap (USD): $53.57 B (Jan. 1, 2024)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

12. Phillips 66

Company Profile: Phillips 66
Market Cap (USD): $52.77 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Refining & Marketing

13. Valero Energy Corporation

Company Profile: Valero Energy Corporation
Market Cap (USD): $51.35 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Refining & Marketing

14. Marathon Petroleum Corporation

Company Profile: Marathon Petroleum Corporation
Market Cap (USD): $50.21 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Refining & Marketing

15. ONEOK, Inc.

Company Profile: ONEOK, Inc.
Market Cap (USD): $46.82 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

16. Baker Hughes Company

Company Profile: Baker Hughes Company
Market Cap (USD): $46.52 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Equipment & Services

17. Hess Corporation

Company Profile: Hess Corporation
Market Cap (USD): $44.39 B (July 1, 2025)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

18. Diamondback Energy, Inc.

Company Profile: Diamondback Energy, Inc.
Market Cap (USD): $44.10 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

19. Cheniere Energy, Inc.

Company Profile: Cheniere Energy, Inc.
Market Cap (USD): $43.47 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

20. Occidental Petroleum Corporation

Company Profile: Occidental Petroleum Corporation
Market Cap (USD): $41.75 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

21. Targa Resources Corp.

Company Profile: Targa Resources Corp.
Market Cap (USD): $40.19 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

22. EQT Corporation

Company Profile: EQT Corporation
Market Cap (USD): $33.36 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

23. Cheniere Energy Partners, L.P.

Company Profile: Cheniere Energy Partners, L.P.
Market Cap (USD): $26.14 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

24. Halliburton Company

Company Profile: Halliburton Company
Market Cap (USD): $25.24 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Equipment & Services

25. Devon Energy Corporation

Company Profile: Devon Energy Corporation
Market Cap (USD): $24.04 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

26. Texas Pacific Land Corporation

Company Profile: Texas Pacific Land Corporation
Market Cap (USD): $20.54 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

27. Contura Energy, Inc.

Company Profile: Contura Energy, Inc.
Market Cap (USD): $20.30 B
Country: United States
Sector: US Energy
Industry: US Thermal Coal

28. Texas Pacific Land Corp

Company Profile: Texas Pacific Land Corp
Market Cap (USD): $19.97 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

29. Coterra Energy Inc.

Company Profile: Coterra Energy Inc.
Market Cap (USD): $19.24 B (July 1, 2023)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

30. Western Midstream Partners, LP

Company Profile: Western Midstream Partners, LP
Market Cap (USD): $16.21 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Midstream

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