| Abbreviation | Definition |
|---|---|
| SEE | Seeing |
| SEGR | Specialist Engy |
| SEP | Std Life Euro |
| SEPU | Sepura |
| SER | Sefton Res. |
| SEV | Servision |
| SEY | Sterling Energy |
| SFI | Sagicor Fin. |
| SFR | Severfield |
| SGC | Stagecoach Group, P.L.C. |
| SGE | Sage Group |
| SGE | Sage Grp. |
| SGG | Sterling Green |
| SGGD | Surgutneft.adr |
| SGI | Stanley Gibbons |
| SGM | Sigma Capital |
| SGO | Socialgo |
| SGP | Supergroup |
| SGR | Shore Capital |
| SGRO | Segro |