| Abbreviation | Definition |
|---|---|
| SOV | Sovereign Bancorp, Inc. |
| SPA | Sparton Corporation |
| SPC | St. Paul Companies, Inc. |
| SPCPM | St. Paul Capital L L C Preferred M |
| SPF | Standard Pacific Corporation |
| SPG | Simon Property Group, Inc. |
| SPGI | S&P Global (formerly McGraw Hill Companies) |
| SPGPB | Simon Property Group, Inc. Preferred B |
| SPH | Suburban Propane Partners, L. P. |
| SPI | Scottish Power, PLC |
| SPK | Spieker Properties, Inc. |
| SPKPB | Spieker Properties, Inc. Preferred B |
| SPKPC | Spieker Properties, Inc. Preferred C |
| SPKPE | Spieker Properties, Inc. Preferred E |
| SPN | Superior Energy Services, Inc. |
| SPP | Sappi, LTD. |
| SPSPT | Southwestern Public Service Capital I |
| SPW | SPX Corporation |
| SQA.A | Sequa Corporation Class A |
| SQAA | Sequa Corporation Class A |