| Abbreviation | Definition |
|---|---|
| SCXIE | Spectex Industries, Incorporated (de-listed) |
| SCXIE | Spectex Industries, Incorporated (de-listed) |
| SCYAE | Security Asset Capital Corporation |
| SCYT | Security Bancorp of Tennessee |
| SDADE | S H Research & Development Corporation |
| SDAY | Sunday Communications |
| SDCNE | S D C International, Inc. |
| SDCNE | SDC International, Incorporated (de-listed) |
| SDCNE | SDC International, Incorporated (de-listed) |
| SDCO | Spiros Development Corporation I |
| SDCO | Spiros Development Corporation Incorported (de-listed) |
| SDCO | Spiros Development Corporation Incorported (de-listed) |
| SDIX | Strategic Diagnostics, Inc. |
| SDIX | Strategic Diagnostics, Incorporated (de-listed) |
| SDIX | Strategic Diagnostics, Incorporated (de-listed) |
| SDLI | S D L, Inc. |
| SDLI | SDL, Incorporated (de-listed) |
| SDLI | SDL, Incorporated (de-listed) |
| SDNA | Sedona Corporation |
| SDNIE | Scottsdale Technologies, Inc. |