| XJT | | NGPL Midcont Physical Gas Daily Spot | Natural Gas | IEPA | |
| XJW | | NGPL Midcont Physical Inside FERC | Natural Gas | IEPA | |
| YHK | | NGPL Nicor Physical Basis LD1 | Natural Gas | IEPA | |
| YHG | | NGPL Nicor Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YHF | | NGPL Nicor Physical Fixed Price Spot | Natural Gas | IEPA | |
| YHI | | NGPL Nicor Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YHH | | NGPL Nicor Physical Gas Daily Spot | Natural Gas | IEPA | |
| YHJ | | NGPL Nicor Physical Natural Gas Intelligence | Natural Gas | IEPA | |
| XVW | | NGPL STX Physical Basis LD1 | Natural Gas | IEPA | |
| XVT | | NGPL STX Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XVS | | NGPL STX Physical Fixed Price Spot | Natural Gas | IEPA | |
| XVV | | NGPL STX Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XVU | | NGPL STX Physical Gas Daily Spot | Natural Gas | IEPA | |
| XVX | | NGPL STX Physical Inside FERC | Natural Gas | IEPA | |
| XIX | | NGPL TXOK Physical Basis LD1 | Natural Gas | IEPA | |
| XIU | | NGPL TXOK Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XIT | | NGPL TXOK Physical Fixed Price Spot | Natural Gas | IEPA | |
| XIW | | NGPL TXOK Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XIV | | NGPL TXOK Physical Gas Daily Spot | Natural Gas | IEPA | |
| XIY | | NGPL TXOK Physical Inside FERC | Natural Gas | IEPA | |
| YHU | | NGPL-Nipsco Physical Basis LD1 | Natural Gas | IEPA | |
| YHQ | | NGPL-Nipsco Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YHP | | NGPL-Nipsco Physical Fixed Price Spot | Natural Gas | IEPA | |
| YHS | | NGPL-Nipsco Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YHR | | NGPL-Nipsco Physical Gas Daily Spot | Natural Gas | IEPA | |
| YHT | | NGPL-Nipsco Physical Natural Gas Intelligence | Natural Gas | IEPA | |
| XIR | | NNG Demarc Physical Basis LD1 | Natural Gas | IEPA | |
| XIO | | NNG Demarc Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XIN | | NNG Demarc Physical Fixed Price Spot | Natural Gas | IEPA | |
| XIQ | | NNG Demarc Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XIP | | NNG Demarc Physical Gas Daily Spot | Natural Gas | IEPA | |
| XIS | | NNG Demarc Physical Inside FERC | Natural Gas | IEPA | |
| XTK | | NNG Ventura Physical Basis LD1 | Natural Gas | IEPA | |
| XTH | | NNG Ventura Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XTG | | NNG Ventura Physical Fixed Price Spot | Natural Gas | IEPA | |
| XTJ | | NNG Ventura Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XTI | | NNG Ventura Physical Gas Daily Spot | Natural Gas | IEPA | |
| XTL | | NNG Ventura Physical Inside FERC | Natural Gas | IEPA | |
| XYX | | Oasis Waha Pool Physical Basis LD1 | Natural Gas | IEPA | |
| XYU | | Oasis Waha Pool Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XYT | | Oasis Waha Pool Physical Fixed Price Spot | Natural Gas | IEPA | |
| XYW | | Oasis Waha Pool Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XYV | | Oasis Waha Pool Physical Gas Daily Spot | Natural Gas | IEPA | |
| XYY | | Oasis Waha Pool Physical Inside FERC | Natural Gas | IEPA | |
| XXB | | OGT Physical Basis LD1 | Natural Gas | IEPA | |
| XWY | | OGT Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XWX | | OGT Physical Fixed Price Spot | Natural Gas | IEPA | |
| XXA | | OGT Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XWZ | | OGT Physical Gas Daily Spot | Natural Gas | IEPA | |
| XXC | | OGT Physical Inside FERC | Natural Gas | IEPA | |