| Name | TIDM | ISIN | Watchlist |
|---|---|---|---|
| SA Floridienne NV | FLOB | BE0974502347 | |
 Sequana Medical | SEQUA | BE0974340722 | |
| Shurgard Self Storage Limited | SHUR | GG00BQZCBZ44 | |
| Sipef | SIP | BE0003898187 | |
 Société De Services, De Participations, De Direction Et D'ELABORATION | SPA | BE0003798155 | |
| Sofina | SOF | BE0003717312 | |
| SOFTIMAT | SOFT | BE0003773877 | |
 Solvac | SOLV | BE0003545531 | |
| Solvay S.A. | SOLB | BE0003470755 | |
| Syensqo | SYENS | BE0974464977 |