United States

Top 145 largest US Companies in the Oil & Gas E&P industry by Market Cap

This is the list of the largest public listed companies in the Oil & Gas E&P industry from the United States by market capitalization with links to their reference stock.

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Top Oil & Gas E&P Companies from the United States as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
1 ConocoPhillips $120.77 B United States US Energy US Oil & Gas E&P
2 EOG Resources, Inc. $58.57 B United States US Energy US Oil & Gas E&P
3 Pioneer Natural Resources Company $53.57 B

(Jan. 1, 2024)

 United States US Energy US Oil & Gas E&P
4 Hess Corporation $44.39 B

(July 1, 2025)

 United States US Energy US Oil & Gas E&P
5 Diamondback Energy, Inc. $44.10 B United States US Energy US Oil & Gas E&P
6 Occidental Petroleum Corporation $41.75 B United States US Energy US Oil & Gas E&P
7 EQT Corporation $33.36 B United States US Energy US Oil & Gas E&P
8 Devon Energy Corporation $24.04 B United States US Energy US Oil & Gas E&P
9 Texas Pacific Land Corporation $20.54 B United States US Energy US Oil & Gas E&P
10 Texas Pacific Land Corp $19.97 B United States US Energy US Oil & Gas E&P
11 Coterra Energy Inc. $19.24 B

(July 1, 2023)

 United States US Energy US Oil & Gas E&P
12 Marathon Oil Corporation $16.10 B

(July 1, 2024)

 United States US Energy US Oil & Gas E&P
13 Chesapeake Energy Corp $10.79 B

(July 1, 2024)

 United States US Energy US Oil & Gas E&P
14 Antero Resources Corporation $10.57 B United States US Energy US Oil & Gas E&P
15 Ovintiv Inc. $10.25 B United States US Energy US Oil & Gas E&P
16 Apache Corporation $9.07 B United States US Energy US Oil & Gas E&P
17 APA Corp $8.68 B United States US Energy US Oil & Gas E&P
18 Range Resources Corporation $8.41 B United States US Energy US Oil & Gas E&P
19 Southwestern Energy Company $7.62 B

(July 1, 2024)

 United States US Energy US Oil & Gas E&P
20 Comstock Resources, Inc. $6.91 B United States US Energy US Oil & Gas E&P
21 PDC Energy, Inc. $6.42 B

(Jan. 1, 2025)

 United States US Energy US Oil & Gas E&P
22 Matador Resources Company $5.40 B United States US Energy US Oil & Gas E&P
23 CNX Resources Corporation $5.26 B United States US Energy US Oil & Gas E&P
24 Murphy Oil Corporation $4.64 B United States US Energy US Oil & Gas E&P
25 Denbury Inc. $4.46 B

(July 1, 2023)

 United States US Energy US Oil & Gas E&P
26 Magnolia Oil & Gas Corporation $4.29 B United States US Energy US Oil & Gas E&P
27 California Resources Corporation $4.14 B United States US Energy US Oil & Gas E&P
28 Black Stone Minerals, L.P. $2.86 B United States US Energy US Oil & Gas E&P
29 Callon Petroleum Company $2.33 B

(Jan. 1, 2024)

 United States US Energy US Oil & Gas E&P
30 Earthstone Energy, Inc. $2.21 B

(July 1, 2023)

 United States US Energy US Oil & Gas E&P

Top Oil & Gas E&P Companies from the United States as of Jan. 01, 2026

1. ConocoPhillips

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

2. 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

3. 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

4. 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

5. 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

6. 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

7. EQT Corporation

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

8. 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

9. 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

10. 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

11. 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

12. Marathon Oil Corporation

Company Profile: Marathon Oil Corporation
Market Cap (USD): $16.10 B (July 1, 2024)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

13. Chesapeake Energy Corp

Company Profile: Chesapeake Energy Corp
Market Cap (USD): $10.79 B (July 1, 2024)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

14. Antero Resources Corporation

Company Profile: Antero Resources Corporation
Market Cap (USD): $10.57 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

15. Ovintiv Inc.

Company Profile: Ovintiv Inc.
Market Cap (USD): $10.25 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

16. Apache Corporation

Company Profile: Apache Corporation
Market Cap (USD): $9.07 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

17. APA Corp

Company Profile: APA Corp
Market Cap (USD): $8.68 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

18. Range Resources Corporation

Company Profile: Range Resources Corporation
Market Cap (USD): $8.41 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

19. Southwestern Energy Company

Company Profile: Southwestern Energy Company
Market Cap (USD): $7.62 B (July 1, 2024)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

20. Comstock Resources, Inc.

Company Profile: Comstock Resources, Inc.
Market Cap (USD): $6.91 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

21. PDC Energy, Inc.

Company Profile: PDC Energy, Inc.
Market Cap (USD): $6.42 B (Jan. 1, 2025)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

22. Matador Resources Company

Company Profile: Matador Resources Company
Market Cap (USD): $5.40 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

23. CNX Resources Corporation

Company Profile: CNX Resources Corporation
Market Cap (USD): $5.26 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

24. Murphy Oil Corporation

Company Profile: Murphy Oil Corporation
Market Cap (USD): $4.64 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

25. Denbury Inc.

Company Profile: Denbury Inc.
Market Cap (USD): $4.46 B (July 1, 2023)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

26. Magnolia Oil & Gas Corporation

Company Profile: Magnolia Oil & Gas Corporation
Market Cap (USD): $4.29 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

27. California Resources Corporation

Company Profile: California Resources Corporation
Market Cap (USD): $4.14 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

28. Black Stone Minerals, L.P.

Company Profile: Black Stone Minerals, L.P.
Market Cap (USD): $2.86 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

29. Callon Petroleum Company

Company Profile: Callon Petroleum Company
Market Cap (USD): $2.33 B (Jan. 1, 2024)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

30. Earthstone Energy, Inc.

Company Profile: Earthstone Energy, Inc.
Market Cap (USD): $2.21 B (July 1, 2023)
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

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