| RCP | | Regional Greenhouse Gas Initiative Allowance Auction Clearing Price | Physical Environmental | IFED | |
| RGT | | Regional Greenhouse Gas Initiative Vintage 2021 Future | Physical Environmental | IFED | |
| RGU | | Regional Greenhouse Gas Initiative Vintage 2022 Future | Physical Environmental | IFED | |
| RJ3 | | Regional Greenhouse Gas Initiative Vintage 2023 Future | Physical Environmental | IFED | |
| RJ4 | | Regional Greenhouse Gas Initiative Vintage 2024 Future | Physical Environmental | IFED | |
| RJ5 | | Regional Greenhouse Gas Initiative Vintage 2025 Future | Physical Environmental | IFED | |
| RJ6 | | Regional Greenhouse Gas Initiative Vintage 2026 Future | Physical Environmental | IFED | |
| RJ7 | | Regional Greenhouse Gas Initiative Vintage 2027 Future | Physical Environmental | IFED | |
| RJ8 | | Regional Greenhouse Gas Initiative Vintage 2028 Future | Physical Environmental | IFED | |
| RJ9 | | Regional Greenhouse Gas Initiative Vintage 2029 Future | Physical Environmental | IFED | |
| RJ0 | | Regional Greenhouse Gas Initiative Vintage 2030 Future | Physical Environmental | IFED | |
| REI | | Relx plc | Single Stock Options | IFLO | |
| RTO | | Rentokil Initial Plc | Single Stock Options | IFLO | |
| 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 | |
| RKS | | Riksbank Dated SWESTR Futures | Short Term Interest Rates | IFLL | |
| RTZ | | Rio Tinto Plc | Single Stock Options | IFLO | |
| 8RZ | | Rio Tinto plc Mini | Mini Single Stocks | IFLO | |
| 8H9 | | Robinhood Markets - STND Future | Mini Stock Futures | 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 | |
| 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 | |
| 8X9 | | ServiceNow Inc - STND Future | Mini Stock Futures | IFLO | |
| SVT | | Severn Trent Plc | Single Stock Options | IFLO | |
| SHL | | Shell plc | Single Stock Options | IFLO | |
| 8SQ | | Shell plc Mini | Mini Single Stocks | IFLO | |
| I02 | | Short BTP Future | Medium/Long Term Interest Rates | IFLL | |
| G02 | | Short Bund Future (Schatz) | Medium/Long Term Interest Rates | IFLL | |
| BFS | | Short French Government Bond Future (OAT) | Medium/Long Term Interest Rates | IFLL | |
| G | | Short Gilt Future | Medium/Long Term Interest Rates | IFLL | |
| S02 | | Short Spanish Government Bond Future | Medium/Long Term Interest Rates | IFLL | |
| XAG | | Silver Daily Futures | Precious Metals | IFEU | |
| STB | | Singapore Mogas 92 Unleaded vs Brent 1st Line Future | Crude Oil and Refined Products | IFEU | |
| SMF | | Singapore Mogas 95 Unleaded (Platts) Future | Crude Oil and Refined Products | IFEU | |
| SFB | | Singapore Mogas 95 Unleaded vs Brent 1st Line Future | Crude Oil and Refined Products | IFEU | |
| SSB | | Singapore Mogas 97 Unleaded vs Brent 1st Line Future | Crude Oil and Refined Products | IFEU | |
| NPU | | Singapore Naphtha Balmo Future | Crude Oil and Refined Products | IFEU | |
| NPT | | Singapore Naphtha Future | Crude Oil and Refined Products | IFEU | |
| SNP | | Smith and Nephew Plc | Single Stock Options | IFLO | |
| SMS | | Smiths Group Plc | Single Stock Options | IFLO | |