| Abbreviation | Definition |
|---|---|
| STRIDES | STock Return Income DEbt Securities |
| STRIP | Separated Trading Of Registered Interest And Principal |
| STRIPS | Separately Tradable Registered Interest and Principal Securities |
| STT | Securities Transaction Tax |
| SUA | Silver Users Association |
| SUMMIT | Stanford University Medical Media And Information Technologies |
| SUQ | SunMicro Inc. Options |
| SVGEX | Saint Vincent and the Grenadines Securities Exchange |
| SVO | Securities Valuation Office |
| SWF | Sovereign Wealth Fund |
| SWQ | SanDisk Corporation options |
| SWX | Swiss Exchange |
| SWX | wiss Exchange |
| SX | Screen X |
| SXG | Samex Mining Corporation |
| SXQ | Scitex Corporation, Ltd. Options |
| SYA | SYSCAN International |
| SYH | Skyharbour Resources, Ltd. |
| SYQ | Symantec Corporation options |
| SZN | StrikeZone Minerals (Canada), LTD. |