| Abbreviation | Definition |
|---|---|
| SLGB | Sarantel B |
| SLI | Std Lfe In Pty |
| SLN | Silence Ther. |
| SLNG | Slingsby H.c |
| SLP | Sylvania Pl |
| SLS | Standard Life UK Smaller Companies Trust, P.L.C. |
| SLV | Sylvania |
| SM | Stock Market |
| SMDR | Salamander |
| SMDS | Smith(ds) |
| SMIN | Smiths Group |
| SMJ | Smart(j) |
| SML | Strategic Min. |
| SMP | St.modwen Prop. |
| SMSD | Samsung El.gds |
| SMSN | Samsung El.gdr |
| SMT | Scottish Mortgage Investment Trust, P.L.C. |
| SMWH | Wh Smith |
| SN. | Smith&nephew |
| SNAK | Snacktime |