| XTU | | TETCO STX Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XTT | | TETCO STX Physical Gas Daily Spot | Natural Gas | IEPA | |
| XTW | | TETCO STX Physical Inside FERC | Natural Gas | IEPA | |
| XVQ | | TETCO WLA Physical Basis LD1 | Natural Gas | IEPA | |
| XVN | | TETCO WLA Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XVM | | TETCO WLA Physical Fixed Price Spot | Natural Gas | IEPA | |
| XVP | | TETCO WLA Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XVO | | TETCO WLA Physical Gas Daily Spot | Natural Gas | IEPA | |
| XVR | | TETCO WLA Physical Inside FERC | Natural Gas | IEPA | |
| XMZ | | Texas Eastern Physical Fixed Price Spot | Natural Gas | IEPA | |
| XNB | | Texas Eastern Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLQ | | TGP 500L Physical Basis LD1 | Natural Gas | IEPA | |
| XLN | | TGP 500L Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XLM | | TGP 500L Physical Fixed Price Spot | Natural Gas | IEPA | |
| XLP | | TGP 500L Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XLO | | TGP 500L Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLR | | TGP 500L Physical Inside FERC | Natural Gas | IEPA | |
| XLW | | TGP 800L Physical Basis LD1 | Natural Gas | IEPA | |
| XLT | | TGP 800L Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XLS | | TGP 800L Physical Fixed Price Spot | Natural Gas | IEPA | |
| XLV | | TGP 800L Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XLU | | TGP 800L Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLX | | TGP 800L Physical Inside FERC | Natural Gas | IEPA | |
| XXH | | TGP Z0 North Physical Basis LD1 | Natural Gas | IEPA | |
| XZJ | | TGP Z0 South Physical Basis LD1 | Natural Gas | IEPA | |
| XZK | | TGP Z0 South Physical Inside FERC | Natural Gas | IEPA | |
| XXE | | TGP Zone 0 North Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XXD | | TGP Zone 0 North Physical Fixed Price Spot | Natural Gas | IEPA | |
| XXG | | TGP Zone 0 North Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XXF | | TGP Zone 0 North Physical Gas Daily Spot | Natural Gas | IEPA | |
| XZG | | TGP Zone 0 South Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XZF | | TGP Zone 0 South Physical Fixed Price Spot | Natural Gas | IEPA | |
| XZI | | TGP Zone 0 South Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XZH | | TGP Zone 0 South Physical Gas Daily Spot | Natural Gas | IEPA | |
| XWI | | TGT Mainline Physical Basis LD1 | Natural Gas | IEPA | |
| XWF | | TGT Mainline Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XWE | | TGT Mainline Physical Fixed Price Spot | Natural Gas | IEPA | |
| XWH | | TGT Mainline Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XWG | | TGT Mainline Physical Gas Daily Spot | Natural Gas | IEPA | |
| XWJ | | TGT Mainline Physical Inside FERC | Natural Gas | IEPA | |
| XV0 | | TGT North LA Physical Basis LD1 | Natural Gas | IEPA | |
| XU9 | | TGT North LA Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XU8 | | TGT North LA Physical Fixed Price Spot | Natural Gas | IEPA | |
| XV2 | | TGT North LA Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XV1 | | TGT North LA Physical Gas Daily Spot | Natural Gas | IEPA | |
| XV3 | | TGT North LA Physical Inside FERC | Natural Gas | IEPA | |
| XWC | | TGT SL Physical Basis LD1 | Natural Gas | IEPA | |
| XWD | | TGT SL Physical Inside FERC | Natural Gas | IEPA | |
| XVZ | | TGT Zone SL Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XVY | | TGT Zone SL Physical Fixed Price Spot | Natural Gas | IEPA | |