| WEI | | Weir Group Plc | Single Stock Options | IFLO | |
| WHI | | Wet Freight - Daily - Dirty FFA - USGC to UK Continent VLCC (Platts) Mini Future | Wet Freight | IFEU | |
| WHG | | Wet Freight - Daily - TD22 FFA - US Gulf to China (Baltic) Mini Future | Wet Freight | IFEU | |
| WFK | | Wet Freight - Dirty FFA - Cross-UKC (Platts) Balmo Future | Wet Freight | IFEU | |
| WFJ | | Wet Freight - Dirty FFA - Daily Cross-UKC (Platts) Mini Future | Wet Freight | IFEU | |
| WHH | | Wet Freight - Dirty FFA - USGC to UK Continent VLCC (Platts) Future | Wet Freight | IFEU | |
| WFM | | Wet Freight - TC23 FFA - ARA to UK-Continent (Baltic) Balmo Future | Wet Freight | IFEU | |
| WFL | | Wet Freight - TC23 FFA - ARA to UK-Continent (Baltic) Future | Wet Freight | IFEU | |
| WTB | | Whitbread Plc | Single Stock Options | IFLO | |
| W | | White Sugar Options | Sugar | IFLX | |
| WIM | | WIM LNG (Platts) Future | Liquified Natural Gas | IFEU | |
| GOW | | Wind GO Futures | Environmental | NDEX | |
| WSA | | Wise Plc | Single Stock Options | IFLO | |
| WIZ | | Wizz Air Holdings Plc | Single Stock Options | IFLO | |
| WPP | | WPP PLC | Single Stock Options | IFLO | |
| TIA | | WTI 1-Month Calendar Spread Options | Crude Oil and Refined Products | IFED | |
| WBT | | WTI 1st Line Balmo Future | Crude Oil and Refined Products | IFED | |
| R | | WTI 1st Line Future | Crude Oil and Refined Products | IFED | |
| RMM | | WTI 1st Line Mini Future | Crude Oil and Refined Products | IFED | |
| T | | WTI American-Style Options | Crude Oil and Refined Products | IFEU | |
| R | | WTI Average Price Options | Crude Oil and Refined Products | IFED | |
| WTB | | WTI Bullet Future | Crude Oil and Refined Products | IFED | |