| Symbol | Name | Country | Exchange |
|---|---|---|---|
| LBRT | Liberty Oilfield Services Inc. | US | NYSE |
| NEX | NexTier Oilfield Solutions Inc. | US | NYSE |
| CFWFF | Calfrac Well Services Ltd | US | OTC |
| CFWWF | Calfrac Well Services Ltd | US | OTC |
| SNVVF | Step Energy Services | US | OTC |
| CFW | Calfrac Well Services Ltd. | CA | TSX |
| STEP | Step Energy Services Ltd | CA | TSX |
| TCW | Trican Well Service Ltd. | CA | TSX |