| DNOW | NOW |
| FTI | TechnipFMC |
| OII | Oceaneering |
| DRQ | Dril-Quip |
| HLX | Helix Energy Solutions Group |
| WHD | Cactus |
| NR | Newpark Resources |
| SOI | Solaris Oilfield Infrastructure |
| GEOS | Geospace |
| NEX | NexTier Oilfield Solutions |
| MRC | MRC Global |
| CHX | ChampionX |
| RNGR | Ranger Energy Services |