| Abbreviation | Definition |
|---|---|
| SMTB | Smithtown Bancorp, Incorporated (de-listed) |
| SMTB | Smithtown Bancorp, Incorporated (de-listed) |
| SMTC | Semtech Corporation |
| SMTF | SmartForce PLC, American Depositary Receipts |
| SMTHE | Smith Technology Corporation |
| SMTI | SMTEK International |
| SMTL | SemiTool, Inc. |
| SMTQE | Select Media Communications, Inc. |
| SMTR | SmarTire Systems, Inc. |
| SMTS | Somanetics Corporation |
| SMTVE | Select Media Communications, Inc. |
| SMXC | Smithway Motor XPress Corporation |
| SMXT | imex Technologies Inc |
| SMXT | Simex Technologies Inc |
| SNAK | Poore Brothers, Inc. |
| SNAP | Synaptic Pharmaceutical |
| SNAP | ynaptic Pharmaceutical |
| SNAX | Lincoln Snacks Company |
| SNBC | Sun Bancorp, Inc. |
| SNBCO | Sun Bancorp, Inc. |