| Symbol | Name | Country | Exchange |
|---|---|---|---|
| 4X8 | VERTEX RESOURCE | DE | F |
| 5JN | BRI-CHEM CORP. | DE | F |
| 7C4 | CES ENERGY SOLUTIONS | DE | F |
| NO8 | NOV Inc | DE | F |
| SCL | Schlumberger Limited | DE | F |
| BRY | Bri-Chem Corp. | CA | TO |
| CEU | CES Energy Solutions Corp | CA | TO |
| ESI | Ensign Energy Services Inc | CA | TO |
| VTX | Vertex Resource Group Ltd | CA | V |
| SLBN | Schlumberger Limited | MX | MX |