| E | Eni S.p.A. |
| XOM | Exxon Mobil |
| EC | Ecopetrol |
| PBR | Petróleo Brasileiro S.A. - Petrobras |
| YPF | YPF Sociedad Anónima |
| CVX | Chevron |
| NFG | National Fuel Gas |
| BP | BP p.l.c. |
| TGS | Transportadora de Gas del Sur |
| TTE | TotalEnergies SE |
| PBR-A | Petróleo Brasileiro S.A. - Petrobras |
| SHEL | Shell |