| Abbreviation | Definition |
|---|---|
| SXC | Six Continents PLC American Depositary Receipts |
| SXI | Standex International Corporation |
| SXL | Sunoco Logistics Partners |
| SXT | Sensient Technologies |
| SY | Sybase, Inc. |
| SYB | Sybron International |
| SYD | Sybron Dental Specialties |
| SYK | Stryker Corporation |
| SYM | Syms Corporation |
| SYT | Syngenta A G, American Depositary Receipts |
| SYX | Systemax, Inc. |
| SYY | Sysco Corporation |
| SZ | Worldwide Restrnt Concepts, Inc. |
| SZA | Suiza Foods Corporation |
| T | A T & T Corporation |
| TAC | Tandycrafts, Inc. |
| TAI | TransAmerica Income Shares, Inc. |
| TAN | Tandy Corporation |
| TAP | Travelers Property Casualty Corporation |
| TAPPB | Travelers Property Casualty Corporation Capital II |