| Symbol | Name | Country | Exchange |
|---|---|---|---|
| FET | Forum Energy Technologies, Inc. | US | NYSE |
| FTK | Flotek Industries, Inc. | US | NYSE |
| NOV | National Oilwell Varco, Inc. | US | NYSE |
| OIS | Oil States International, Inc. | US | NYSE |
| RCON | Recon Technology, Ltd. | US | NASDAQ |
| HNTIF | Hunting Group Plc Ord | US | OTC |
| CFW | Calfrac Well Services Ltd. | CA | TSX |
| PD | Precision Drilling Corporation | CA | TSX |
| SES | Secure Energy Services Inc. | CA | TSX |
| M05 | MTQ Corporation Limited | SG | SG |
| 300370 | Sichuan Etrol Technologies Co Ltd | CN | SHE |