| Abbreviation | Definition |
|---|---|
| SEO | Stora Enso OYJ, American Depositary Receipts |
| SEP | Swedish Export CR Corporation |
| SEPPA | Swedish Export CR Corporation Preferred A |
| SEW | Singer Company N. V. |
| SF | Stifel Financial Corporation |
| SFA | Scientific Atlanta, Inc. |
| SFD | Smithfield Foods, Inc. |
| SFE | Safeguard Scientifics, Inc. |
| SFF | Santa Fe Energy Trust |
| SFG | Sancorp Financial Group, Inc. |
| SFI | Starwood Financial, Inc. |
| SFIPB | Starwood Financial, Inc. Preferred B |
| SFIPC | Starwood Financial, Inc. Preferred C |
| SFIPD | Starwood Financial, Inc. Preferred D |
| SFN | Spherion Corporation |
| SFP | Salton, Inc. |
| SFS | Santa Fe Snyder Corporation |
| SFX | SFX Entertainment, Inc. |
| SFY | Swift Energy Company |
| SG | Scientific Games Holdings, Corporation |