| Abbreviation | Definition |
|---|---|
| SCLPE | Smith Collins Pharmaceuticals, Incorporated (de-listed) |
| SCLPE | Smith Collins Pharmaceuticals, Incorporated (de-listed) |
| SCMM | SCM Microsystems, Inc. |
| SCMM | SCM Microsystems, Incorporated (de-listed) |
| SCMM | SCM Microsystems, Incorporated (de-listed) |
| SCMR | Sycamore Networks, Inc. |
| SCMR | Sycamore Networks, Incorporated (de-listed) |
| SCMR | Sycamore Networks, Incorporated (de-listed) |
| SCMSE | Scientific Measurement Systems |
| SCMT | Southern Community Bank & Trust |
| SCMUE | Southland Communications |
| SCND | Scientific Industries, Inc. |
| SCNRE | System Controls, Inc. |
| SCNT | Scient Corporation |
| SCNYA | Saucony, Inc. Class A |
| SCNYB | Saucony, Inc. Class B |
| SCOC | Santa Cruz Operation, Inc. |
| SCOM | Sharps Compliance Corporation |
| SCON | Superconductor Technologies, Inc. |
| SCOP | Scopus Video Networks, LTD., common shares |