| Abbreviation | Definition |
|---|---|
| SQAB | Sequa Corporation Class B |
| SQF | Seligman Quality Municipal Fund, Inc. |
| SQM | Sociedad Quimica y Minera de Chile |
| SQMA | Sociedad Quimica y Minera de Chile Class A |
| SR | Standard Register Company |
| SRE | Sempra Energy Corporation |
| SRF | Sears Roebuck Acceptance Corporation |
| SRH | Sears Roebuck Acceptance Corporation |
| SRI | Stoneridge, Inc. |
| SRM | Sensormatic Electronics Corporation |
| SRP | Sierra Pacific Resources |
| SRPPT | Sierra Pacific Power Capital I |
| SRR | Stride Rite Corporation |
| SRT | Startek, Inc. |
| SRV | Service Corporation International |
| SRW | Charles E. Smith Residential Realty, Inc. (de-listed) |
| SRX | SRA International, Inc. |
| SRZ | Sunrise Assisted Living |
| SSA | Saatchi & Saatchi, P. L. C. |
| SSC | Sunshine Mining & Refining Company |