| Abbreviation | Definition |
|---|---|
| SPNTW | hopnet.com Inc |
| SPNTW | Shopnet.com Inc |
| SPNVE | Supercart International, Inc. |
| SPNW | Shopnow.Com, Inc. |
| SPNX | Spinnaker Exploration |
| SPOP | Spectrum Organic |
| SPOR | Sport Haley, Inc. |
| SPOT | PanAmSat Corporation ( Pan American Satellite) |
| SPOT | PanAmSat Corporation (Pan American Satellite) (de-listed) |
| SPOT | PanAmSat Corporation (Pan American Satellite) (de-listed) |
| SPPPF | SPI Suspension & Parts Industry |
| SPPTY | Southern Pacific Petroleum, N. L. |
| SPRI | S P R, Inc. |
| SPRS | Surge Components, Inc. |
| SPRSW | Surge Components, Inc. |
| SPRX | Spectrx, Inc. |
| SPSI | SpectraScience |
| SPSOC | Sparta Surgical Corporation |
| SPSS | S P S S, Inc. |
| SPST | Spencer's Restaurants, Inc. |