| Abbreviation | Definition |
|---|---|
| STFF | Staff Leasing, Inc. |
| STFR | St. Francis Capital Corporation |
| STGC | Startec Global Communication Corporation |
| STGI | Steroidogenesis Inhibitor International |
| STGI | Steroidogenesis Inhibitor International (de-listed_ |
| STGI | Steroidogenesis Inhibitor International (de-listed_ |
| STGM | Status Game Corporation |
| STHHY | SouthCorp, LTD. |
| STHK | StarTech Enviro Corporation |
| STHK | StarTech Enviro Corporation (de-listed) |
| STHK | StarTech Enviro Corporation (de-listed) |
| STHLY | STET Hellas Telecommunications |
| STHVY | Southvaal Holdings, LTD. |
| STILY | Stilfontien Gold Mining, LTD. |
| STILY | Stilfontien Gold Mining, LTD. (de-listed) |
| STILY | Stilfontien Gold Mining, LTD. (de-listed) |
| STIN | Startec, Inc. |
| STIN | Startec, Incorporated (de-listed) |
| STIN | Startec, Incorporated (de-listed) |
| STIR | S T I, Inc. |