| Symbol | Name | Country | Exchange |
|---|---|---|---|
| AGTX | Agentix Corp | US | OTC |
| ATONY | Anton Oilfld Sv ADR | US | OTC |
| CLEV | Concrete Leveling Sy | US | OTC |
| OILRF | Oil Refrineries Ltd | US | OTC |
| PFFVF | Pfeiffer Vacuum Technology Ag | US | OTC |
| SDCVF | Vicat SA | US | OTC |
| SECYF | Secure Energy Svcs | US | OTC |
| SNVVF | Step Energy Services | US | OTC |
| SPXSF | Spirax-Sarco Engineering plc | US | OTC |
| TOLWF | Trican Well Service | US | OTC |
| CFW | Calfrac Well Services Ltd. | CA | TSX |
| HWO | High Arctic Energy Services Inc. | CA | TSX |
| SES | Secure Energy Services Inc. | CA | TSX |
| STEP | Step Energy Services Ltd | CA | TSX |