| Abbreviation | Definition |
|---|---|
| SWSEO | Southwestern Electric Power Company |
| SWSEP | Southwestern Electric Power Company |
| SWSHE | Swisher International, Inc. |
| SWSI | Safe Waste Systems, Inc. |
| SWSS | Swiss Chalet, Inc. |
| SWTI | Systems West, Inc. |
| SWTX | SouthWall Technologies, Inc. |
| SWVB | S W V A Bancshares, Inc. |
| SWWC | SouthWest Water Company |
| SWWE | Southwestern Water Exploration |
| SWWT | SWWT, Inc. |
| SWWT | SWWT, Incorporated (de-listed) |
| SWWT | SWWT, Incorporated (de-listed) |
| SWYF | Seaway Financial Corporation |
| SWYF | Seaway Financial Corporation (de-listed) |
| SWYF | Seaway Financial Corporation (de-listed) |
| SXNB | Success Capital Trust I |
| SXNB | Success Capital Trust I (de-listed) |
| SXNB | Success Capital Trust I (de-listed) |
| SXNBP | Success Capital Trust I Preferred |