| CB6 | | California Carbon Allowance Vintage 2026 Future | Physical Environmental | IFED | |
| CB7 | | California Carbon Allowance Vintage 2027 Future | Physical Environmental | IFED | |
| CB8 | | California Carbon Allowance Vintage 2028 Future - CB8 | Physical Environmental | IFED | |
| CB9 | | California Carbon Allowance Vintage 2029 Future | Physical Environmental | IFED | |
| C30 | | California Carbon Allowance Vintage 2030 Future | Physical Environmental | IFED | |
| LFF | | California Low Carbon Fuel Standard Credit (OPIS) Balmo Future | Biofuels | IFED | |
| LFS | | California Low Carbon Fuel Standard Credit (OPIS) Future | Biofuels | IFED | |
| CN0 | | Canal+ | Single Stock Options | IFLO | |
| RS1 | | Canola 1-month Calendar Spread Option | Canola | IFUS | |
| RS | | Canola Options | Canola | IFUS | |
| TCC | | Capesize Timecharter (Baltic) Freight Future | Dry Freight | IFEU | |
| CPI | | Capita PLC | Single Stock Options | IFLO | |
| CNG | | Capricorn Energy plc | Single Stock Options | IFLO | |
| POC | | Carnival PLC | Single Stock Options | IFLO | |
| CTR | | Centrica PLC | Single Stock Options | IFLO | |
| XLE | | CG Mainline Physical Basis LD1 | Natural Gas | IEPA | |
| XLB | | CG Mainline Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XLA | | CG Mainline Physical Fixed Price Spot | Natural Gas | IEPA | |
| XLD | | CG Mainline Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XLC | | CG Mainline Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLF | | CG Mainline Physical Inside FERC | Natural Gas | IEPA | |
| CON | | CG Onshore Basis Future | Natural Gas | IFED | |
| CVG | | CG Onshore Index Future | Natural Gas | IFED | |
| XLK | | CG Onshore Physical Basis LD1 | Natural Gas | IEPA | |
| XLH | | CG Onshore Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XLG | | CG Onshore Physical Fixed Price Spot | Natural Gas | IEPA | |
| XLJ | | CG Onshore Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XLI | | CG Onshore Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLL | | CG Onshore Physical Inside FERC | Natural Gas | IEPA | |
| CVH | | CG Onshore Swing Future | Natural Gas | IFED | |
| CGB | | CG-Mainline Basis Future | Natural Gas | IFED | |
| CGA | | CG-Mainline Fixed Price Future | Natural Gas | IFED | |
| CGI | | CG-Mainline Index Future | Natural Gas | IFED | |
| CGR | | CG-Mainline Swing Future | Natural Gas | IFED | |
| CVQ | | Cheyenne Hub Swing Future | Natural Gas | IFED | |
| XNX | | Cheyenne Physical Basis LD1 | Natural Gas | IEPA | |
| XNT | | Cheyenne Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XNS | | Cheyenne Physical Fixed Price Spot | Natural Gas | IEPA | |
| XNV | | Cheyenne Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XNU | | Cheyenne Physical Gas Daily Spot | Natural Gas | IEPA | |
| XNW | | Cheyenne Physical Inside FERC | Natural Gas | IEPA | |
| DGD | | Chicago Basis Future | Natural Gas | IFED | |
| ETC | | Chicago Ethanol Future | Biofuels | IFED | |
| CFB | | Chicago Fixed Price Future | Natural Gas | IFED | |
| CIS | | Chicago Index Future | Natural Gas | IFED | |
| CSS | | Chicago Swing Future | Natural Gas | IFED | |
| CRI | | CIG Rockies Basis Future | Natural Gas | IFED | |
| CRA | | CIG Rockies Fixed Price Future | Natural Gas | IFED | |
| CRC | | CIG Rockies Index Future | Natural Gas | IFED | |
| CRS | | CIG Rockies Swing Future | Natural Gas | IFED | |