| Symbol | Name | Country | Exchange |
|---|---|---|---|
| SILEON | Sileon AB | SE | ST |
| SIM | Simcorp A/S | DK | CO |
| SIS | Simble Solutions Limited | AU | ASX |
| SIS | Simble Solutions Limited | AU | AU |
| SKF | Skyfii Ltd | AU | ASX |
| SKKY | Skkynet Cloud | US | OTC |
| SKL | Skillcast Group plc | UK | LSE |
| SKO | Serko Ltd | AU | AU |
| SLVFF | Silverlake Axis Ltd Ord | US | OTC |
| SLXXF | Fintech Select Ltd. | US | OTC |
| SMAR | Smartsheet Inc. | US | NYSE |
| SMME | Smartmetric Inc | US | OTC |
| SMP | SmartPay Holdings Ltd | AU | AU |
| SMRL | Simtrol Inc | US | US |
| SMSI | Smith Micro Software, Inc. | US | NASDAQ |
| SMTEF | Smart Eye | US | OTC |
| SNCR | Synchronoss Technologies, Inc. | US | NASDAQ |
| SNEL | Synel M.L.L Payway Ltd | IL | TA |
| SNG | Singular People S.A. | ES | MC |
| SNNSF | Sensen Networks Ltd | US | OTC |