| DNOW | NOW |
| RES | RPC |
| OII | Oceaneering |
| WHD | Cactus |
| OIS | Oil States |
| FET | Forum Energy |
| NR | Newpark Resources |
| WFRD | Weatherford |
| SOI | Solaris Oilfield Infrastructure |
| GEOS | Geospace |
| EFXT | Enerflex |
| NEX | NexTier Oilfield Solutions |
| NOV | NOV |
| CHX | ChampionX |
| AROC | Archrock |
| RNGR | Ranger Energy Services |