| RES | RPC |
| OII | Oceaneering |
| DRQ | Dril-Quip |
| WHD | Cactus |
| OIS | Oil States |
| XPRO | Expro Group |
| FET | Forum Energy |
| SOI | Solaris Oilfield Infrastructure |
| GEOS | Geospace |
| EFXT | Enerflex |
| MRC | MRC Global |
| NOV | NOV |
| NGS | Natural Gas Services Group |
| VTOL | Bristow Group |
| CHX | ChampionX |
| RNGR | Ranger Energy Services |