| Name | Country | Market Cap (US$) |
|---|
| ENSCO International Inc. | United States | 11,037 |
| Questar Corporation | United States | 10,335 |
| China Resources Power Holdings Company Ltd. | Hong Kong | 9,952 |
| BJ Services Company | United States | 9,313 |
| Range Resources Corporation | United States | 8,751 |
| Pioneer Natural Resources Company | United States | 7,578 |
| Oil & Gas Development Corporation | Pakistan | 7,554 |
| Denbury Resources Inc. | United States | 7,417 |
| Newfield Exploration Company | United States | 7,058 |
| Pride International, Inc. | United States | 6,924 |
| Sunpower Corporation | United States | 6,591 |
| Energy Transfer Equity, LP | United States | 6,415 |
| Patterson-UTI Energy Inc | United States | 4,875 |
| Superior Energy Services, Inc. | United States | 4,027 |
| Advantest Corporation | Japan | 3,894 |
| Japan Petroleum Exploration Co. Ltd. | Japan | 3,665 |
| Idemitsu Kosan Co., Ltd. | Japan | 3,618 |
| NSTAR | United States | 3,472 |
| Unit Corporation | United States | 3,444 |
| Encore Acquisition Company | United States | 3,349 |
|