| Abbreviation | Definition |
|---|---|
| SORB | Sorbic Int |
| SOU | Sound Oil |
| SPA | 1Spatial, P.L.C. |
| SPD | Sportsdirect |
| SPE | Sopheon |
| SPFL | Sofia Prop |
| SPGH | Superglass |
| SPH | Sinclair Pharma |
| SPK | Spark Vent. |
| SPL | Skil Ports & Lg |
| SPL | Skil Ports & Logistics Limited Ordinary shares |
| SPMG | Sport Media |
| SPO | Sportech |
| SPPC | St Peter Port |
| SPR | Sperati(ca) |
| SPT | Spirent |
| SPX | Spirax-sarco |
| SQB | Squarestone |
| SQBW | Squarestone Wts |
| SQS | Sqs Software |