| Code | Name | High | Low | Close | Volume | Change | |
|---|
| OBE | Obsidian Energy Ltd | 0.5500 | 0.5200 | 0.5300 | 29,639 | -0.0100 |  | 1.85 |   |
| OGC | Oceanagold Corp | 2.440 | 2.240 | 2.240 | 2,362,358 | -0.240 | | 9.68 | |
| OGD | Orbit Garant Drilling Inc | 0.9600 | 0.9200 | 0.9200 | 2,700 | -0.0400 | | 4.17 | |
| OGI | Organigram Holdings Inc | 1.610 | 1.460 | 1.460 | 428,237 | -0.130 | | 8.18 | |
| OLA | Orla Mining Ltd | 5.050 | 4.810 | 4.820 | 400,768 | -0.300 | | 5.86 | |
| OLY | Olympia Financial Group Inc | 39.50 | 39.00 | 39.00 | 3,300 | 0.15 |  | 0.39 | |
| OMI | Orosur Mining Inc | 0.1100 | 0.0950 | 0.0950 | 905 | -0.0050 | | 5.00 | |
| ONC | Oncolytics Bio | 2.500 | 2.190 | 2.210 | 63,972 | -0.140 | | 5.96 | |
| ONC.WT | Oncolytics Biotech Inc WT | 0.0400 | 0.0400 | 0.0400 | 300 | -0.0400 | | 50.00 | |
| ONEB | CI One North American Core Plus Bond ETF | 52.87 | 52.87 | 52.87 | 200 | 0.00 |  | 0.00 | |
| ONEQ | CI One Global Equity ETF | 25.82 | 25.61 | 25.82 | 3,513 | -0.47 | | 1.79 | |
| ONEX | Onex Corp | 60.62 | 58.51 | 58.93 | 217,087 | -1.32 | | 2.19 | |
| OPS | Opsens Inc | 0.6800 | 0.6800 | 0.6800 | 15,000 | -0.0200 | | 2.86 | |
| OPT | Optiva Inc | 48.00 | 47.99 | 48.00 | 740 | 1.75 | | 3.78 | |
| OR | Osisko Gold Royalties Ltd | 16.32 | 15.27 | 15.38 | 787,782 | -1.12 | | 6.79 | |
| OR.DB | Osisko Gold Royalties Ltd 4.00 Pct Debs | 107.0 | 104.0 | 104.0 | 60,000 | -3.0 | | 2.80 | |
| OR.WT | Osisko Gold Royalties Ltd WT | 0.3700 | 0.3700 | 0.3700 | 100 | -0.0100 | | 2.63 | |
| ORA | Aura Minerals Inc | 16.12 | 14.89 | 14.89 | 12,383 | -1.18 | | 7.34 | |
| OREA | Orea Mining Corp | 0.1350 | 0.1250 | 0.1300 | 2,694 | -0.0100 | | 7.14 | |
| ORL | Orocobre Limited | 2.540 | 2.410 | 2.410 | 39,430 | -0.260 | | 9.74 | |
| ORV | Orvana Minerals J | 0.2550 | 0.2400 | 0.2400 | 284 | -0.0100 | | 4.00 | |
| OSB | Norbord Inc | 39.67 | 38.47 | 38.62 | 240,451 | -0.83 | | 2.10 | |
| OSK | Osisko Mining Inc | 3.730 | 3.420 | 3.490 | 1,642,689 | -0.280 | | 7.43 | |
| OSL.UN | Ocp Senior Credit Fund | 7.580 | 7.570 | 7.570 | 10,499 | -0.010 | | 0.13 | |
| OSP | Brompton Oil Split Corp | 0.3600 | 0.3600 | 0.3600 | 100 | 0.0100 | | 2.86 | |
| OSP.PR.A | Brompton Oil Split Corp Pref | 5.950 | 5.950 | 5.950 | 100 | 0.250 | | 4.39 | |
| OTEX | Open Text Corp | 56.78 | 55.17 | 55.29 | 561,912 | -0.85 | | 1.51 | |
| OVV | Ovintiv Inc | 12.37 | 11.29 | 11.31 | 945,441 | -0.91 | | 7.45 | |
| OXC | Oryx Petroleum Corporation Ltd | 0.0600 | 0.0600 | 0.0600 | 1,105 | -0.0050 | | 7.69 | |