| Abbreviation | Definition |
|---|---|
| SLX | Silvermex Resources Incorporated (de-listed) |
| SMA | SMART Technologies Inc. |
| SMA | SMART Technologies Incorporated (de-listed) |
| SMA | SMART Technologies Incorporated (de-listed) |
| SMF | Semafo Inc. |
| SMF | Semafo, Incorporated |
| SMX | SMTC Manufacturing Corporation of Canada |
| SNC | SNC-Lavalin Group Inc. |
| SNC | SNC-Lavalin Group, Incorporated |
| SNP | SNP Split Corp. |
| SNP | SNP Split Corporation |
| SO | Softchoice Corporation |
| SOQ | Sonde Resources Corp. |
| SOQ | Sonde Resources Corporation |
| SOT | Split REIT Opportunity Trust |
| SOY | SunOpta, Inc. |
| SOY | SunOpta, Incorporated |
| SPB | Superior Plus Corp. |
| SPB | Superior Plus Corporation |
| SPE | Spartan Exploration Ltd. |