| Abbreviation | Definition |
|---|---|
| STAK | Austin's Steaks & Saloon |
| STAR | Lone Star Steakhouse and Saloon (de-listed - went private) |
| STAT | I Stat Corporation |
| STAX | Stelax Industries, LTD. |
| STBA | S & T Bancorp, Inc. |
| STBA | S & T Bancorp, Incorporated |
| STBF | Southeastern Thrift & Bank Fund |
| STBWY | Seversky Tube Works |
| STBY | Stansbury Holdings Corporation |
| STCHE | Site Technologies, Inc. |
| STCIA | Salient 3 Communications, Inc. |
| STCL | Shared Technologies Cellular, Inc. (delisted) |
| STCR | Starcraft Corporation |
| STDE | Standard Energy Corporation |
| STDS | Scottsdale Scientific, Inc. |
| STEI | Stewart Enterprises, Inc. |
| STEL | S A Telecom, Inc. |
| STEN | Starnet Consulting, Inc. |
| STFA | Stratford American Corporation |
| STFC | State Auto Financial Corporation |