| Symbol | Name | Country | Exchange |
|---|---|---|---|
| BKR | Baker Hughes Company | US | NASDAQ |
| WHD | Cactus, Inc. | US | NYSE |
| CRGGF | China Resources Gas Group Ltd | US | OTC |
| KEGX | Key Energy Services Inc | US | OTC |
| PKDC | Parker Drilling Company | US | OTC |
| SMCAY | Smc Corporation | US | OTC |
| SMECF | SMC Corporation | US | OTC |