| YW7 | | REX E-PEPL Physical Basis LD1 | Natural Gas | IEPA | |
| YW3 | | REX E-PEPL Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YW2 | | REX E-PEPL Physical Fixed Price Spot | Natural Gas | IEPA | |
| YW5 | | REX E-PEPL Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YW4 | | REX E-PEPL Physical Gas Daily Spot | Natural Gas | IEPA | |
| YW6 | | REX E-PEPL Physical Inside FERC | Natural Gas | IEPA | |
| YWD | | REX E-Trunk Physical Basis LD1 | Natural Gas | IEPA | |
| YW9 | | REX E-Trunk Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YW8 | | REX E-Trunk Physical Fixed Price Spot | Natural Gas | IEPA | |
| YWB | | REX E-Trunk Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YWA | | REX E-Trunk Physical Gas Daily Spot | Natural Gas | IEPA | |
| YWC | | REX E-Trunk Physical Inside FERC | Natural Gas | IEPA | |
| REX | | REX Zone 3 Basis Future | Natural Gas | IFED | |
| REH | | REX Zone 3 Fixed Price Future | Natural Gas | IFED | |
| REI | | REX Zone 3 Index Future | Natural Gas | IFED | |
| RES | | REX Zone 3 Swing Future | Natural Gas | IFED | |
| RM5 | | Rightmove Plc | Single Stock Options | IFLO | |
| RTZ | | Rio Tinto Plc | Single Stock Options | IFLO | |
| 8RZ | | Rio Tinto plc Mini | Mini Single Stocks | IFLO | |
| RC1 | | Robusta Coffee 1-Month Calendar Spread Option | Coffee | IFLX | |
| RC2 | | Robusta Coffee 2-Month Calendar Spread Option | Coffee | IFLX | |
| RC | | Robusta Coffee Options | Coffee | IFLX | |
| 8RR | | Rolls-Royce Group plc Mini | Mini Single Stocks | IFLO | |
| RR | | Rolls-Royce Holdings Plc | Single Stock Options | IFLO | |
| Z4G | | Rover-ANR Fixed Price Monthly | Natural Gas | IEPA | |
| Z4F | | Rover-ANR Fixed Price Spot | Natural Gas | IEPA | |
| Z4K | | Rover-ANR Physical Basis LD1 | Natural Gas | IEPA | |
| Z4I | | Rover-ANR Physical Gas Daily Monthly | Natural Gas | IEPA | |
| Z4H | | Rover-ANR Physical Gas Daily Spot | Natural Gas | IEPA | |
| Z4J | | Rover-ANR Physical Inside FERC | Natural Gas | IEPA | |
| Z4M | | Rover-PEPL Fixed Price Monthly | Natural Gas | IEPA | |
| Z4L | | Rover-PEPL Fixed Price Spot | Natural Gas | IEPA | |
| Z4Q | | Rover-PEPL Physical Basis LD1 | Natural Gas | IEPA | |
| Z4O | | Rover-PEPL Physical Gas Daily Monthly | Natural Gas | IEPA | |
| Z4N | | Rover-PEPL Physical Gas Daily Spot | Natural Gas | IEPA | |
| Z4P | | Rover-PEPL Physical Inside FERC | Natural Gas | IEPA | |
| YX3 | | Ruby Pipeline - Receipt Pool Physical Basis | Natural Gas | IEPA | |
| YWZ | | Ruby Pipeline - Receipt Pool Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YWY | | Ruby Pipeline - Receipt Pool Physical Fixed Price Spot | Natural Gas | IEPA | |
| YX1 | | Ruby Pipeline - Receipt Pool Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YX0 | | Ruby Pipeline - Receipt Pool Physical Gas Daily Spot | Natural Gas | IEPA | |
| YX2 | | Ruby Pipeline - Receipt Pool Physical Inside FERC | Natural Gas | IEPA | |
| SGE | | Sage Group Plc (THE) | Single Stock Options | IFLO | |
| SAN | | Sainsbury (J) PLC | Single Stock Options | IFLO | |
| SDS | | Schroders Plc | Single Stock Options | IFLO | |
| SEG | | Segro Plc | Single Stock Options | IFLO | |
| SRP | | Serco Group | Single Stock Options | IFLO | |
| SVT | | Severn Trent Plc | Single Stock Options | IFLO | |
| SHL | | Shell plc | Single Stock Options | IFLO | |
| 8SQ | | Shell plc Mini | Mini Single Stocks | IFLO | |