| DNOW | NOW |
| RES | RPC |
| FTI | TechnipFMC |
| OII | Oceaneering |
| BKR | Baker Hughes Company |
| DRQ | Dril-Quip |
| HLX | Helix Energy Solutions Group |
| WHD | Cactus |
| OIS | Oil States |
| XPRO | Expro Group |
| SOI | Solaris Oilfield Infrastructure |
| NEX | NexTier Oilfield Solutions |
| MRC | MRC Global |
| VTOL | Bristow Group |
| RNGR | Ranger Energy Services |