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| QGR | Q-Gold Resources Ltd. | TSX Venture | Active |
| QHR | QHR Technologies Inc. | TSX Venture | Active |
| QI | Q Investments Ltd. | TSX Venture | Active |
| QLT | QLT Inc. | TSX | Active |
| QRS.P | QRS Capital Corp | TSX Venture | Active |
| QUX | Quadra FNX Mining | TSX | Active |
| QUX.WT | Quadra FNX Mining Wt | TSX | Active |
| QRO | Quadro Resources Ltd | TSX Venture | Active |
| QR.H | Quanta Resources Inc. | TSX Venture | Active |
| QRE | Quantum Rare Earth Developments Corp. | TSX Venture | Active |
| QZM.H | Quartz Mountain Resources Ltd. | TSX Venture | Active |
| QTA | Quaterra Resources Inc. | TSX Venture | Active |
| QBR.A | Quebecor Inc Cl A MV | TSX | Active |
| QBR.B | Quebecor Inc Cl B SV | TSX | Active |
| QML | Queensland Minerals Ltd | TSX Venture | Active |
| QMI | Queenston Mining Inc | TSX | Active |
| QC | Quest Capital Corp. | TSX | Active |
| QEC | Questerre Corp. J | TSX | Active |
| QST | Questor Technology Inc. | TSX Venture | Active |
| QPT | Quest Pharmatech Inc. | TSX Venture | Active |
| QRM | Quest Rare Minerals Ltd | TSX Venture | Active |
| QEI | Quetzal Energy Ltd | TSX Venture | Active |
| Quizam Media Corporation | TSX Venture | Active | |
| QIS | Quorum Information Technologies Inc. | TSX Venture | Active |
| QVC | QuStream Corporation | TSX Venture | Active |
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