| ONE WORLD MINERALS (OWM) CNSX - Canadian Securities Exchange | |
| ONEX Corporation (ONEX) TSE - Toronto Stock Exchange | |
| ORSU METALS CORPORATION (OSU) CVE - Toronto TSX Ventures Exchange | |
| OV2 Investment 1 Inc (OVO.P) CVE - Toronto TSX Ventures Exchange | |
| OneCap Investment Corp (OIC) CVE - Toronto TSX Ventures Exchange | |
| OneRoof Energy Group Inc (ON.H) CVE - Toronto TSX Ventures Exchange | |
| Open Text Corp (OTEX) TSE - Toronto Stock Exchange | |
| Opsens Inc. (OPS) TSE - Toronto Stock Exchange | |
| Opus One Resources Inc (OOR) CVE - Toronto TSX Ventures Exchange | |
| Organic Garage Ltd (OG) CVE - Toronto TSX Ventures Exchange | |
| Organic Garage Ltd (OG) CNSX - Canadian Securities Exchange | |
| Ortho Regenerative Technologies Inc (ORTH) CNSX - Canadian Securities Exchange | |
| Osprey Gold Development Ltd (OS) CVE - Toronto TSX Ventures Exchange | |
| Outrider Energy Corp (MCF) CVE - Toronto TSX Ventures Exchange | |
| Olympic Circuit Technology CoLtd (603920) SHA - Shanghai Stock Exchange | |