| AR | Antero Resources |
| GPRK | GeoPark |
| MUR | Murphy Oil |
| CRC | California Resources |
| SM | SM Energy Company |
| RRC | Range Resources |
| CIVI | Civitas Resources |
| MTDR | Matador Resources Company |
| EPSN | Epsilon Energy |
| CRK | Comstock Resources |
| MGY | Magnolia Oil & Gas |
| GPOR | Gulfport Energy |