| Name
| Country
| Market Cap (US$)
|
|---|
| Exxon Mobil Corporation | United States | 475,163 |
| Suncor Energy Inc. | Canada | 57,792 |
| Devon Energy Corporation | United States | 52,348 |
| Canadian Natural Resources Limited | Canada | 51,249 |
| Transocean Inc. | United States | 50,159 |
| Apache Corporation | United States | 46,095 |
| Marathon Oil Corporation | United States | 37,558 |
| Surgutneftegas | Russia | 37,395 |
| Hess Corp | United States | 37,052 |
| Anadarko Petroleum Corporation | United States | 36,336 |
| EOG Resources, Inc. | United States | 34,680 |
| XTO Energy Inc. | United States | 33,789 |
| Chesapeake Energy Corporation | United States | 30,400 |
| Valero Energy Corporation | United States | 24,622 |
| Korea Electric Power Corporation (KEPCO) | South Korea | 20,352 |
| Diamond Offshore Drilling, Inc. | United States | 18,125 |
| Noble Corporation | United States | 17,024 |
| Noble Energy Inc. | United States | 16,684 |
| Murphy Oil Corporation | United States | 16,139 |
| Nabors Industries Ltd. | Bermuda | 11,128 |
|