| Code | Name | High | Low | Close | Volume | Change | |
|---|
| OBE | Obsidian Energy Ltd | 7.500 | 7.240 | 7.390 | 256,679 | 0.000 |  | 0.00 |   |
| OGC | Oceanagold Corp | 19.40 | 18.74 | 18.95 | 765,528 | -0.25 |  | 1.30 | |
| OGD | Orbit Garant Drilling Inc | 1.600 | 1.590 | 1.600 | 15,600 | 0.010 |  | 0.63 | |
| OGI | Organigram Holdings Inc | 2.000 | 1.930 | 1.990 | 33,216 | 0.030 | | 1.53 | |
| OILY | Evolve Canadian Energy Enhanced Yield IN | 9.050 | 8.990 | 9.010 | 4,356 | -0.110 | | 1.21 | |
| OLA | Orla Mining Ltd | 16.20 | 15.54 | 16.14 | 512,613 | -0.06 | | 0.37 | |
| OLY | Olympia Financial Group Inc | 122.9 | 122.0 | 122.9 | 2,403 | 0.7 | | 0.53 | |
| ONC | Oncolytics Bio | 1.730 | 1.570 | 1.700 | 583,291 | 0.170 | | 11.11 | |
| ONEB | CI One North American Core Plus Bond ETF | 49.40 | 49.40 | 49.40 | 107 | 0.00 | | 0.00 | |
| ONEC | Accelerate Onechoice Altnv Portfolio ETF | 23.88 | 23.81 | 23.88 | 203 | 0.06 | | 0.25 | |
| ONEQ | CI One Global Equity ETF | 45.80 | 45.80 | 45.80 | 200 | 0.04 | | 0.09 | |
| ONEX | Onex Corp | 114.1 | 111.9 | 113.1 | 57,196 | 0.6 | | 0.55 | |
| OPT | Optiva Inc | 1.350 | 1.350 | 1.350 | 1,700 | -0.050 | | 3.57 | |
| OR | Osisko Gold Royalties Ltd | 38.23 | 37.26 | 37.75 | 374,267 | 0.02 | | 0.05 | |
| ORA | Aura Minerals Inc | 35.94 | 32.27 | 33.25 | 442,220 | -2.17 | | 6.13 | |
| ORE | Orezone Gold Corp | 1.120 | 1.050 | 1.100 | 605,595 | 0.020 | | 1.85 | |
| ORV | Orvana Minerals J | 0.5800 | 0.5800 | 0.5800 | 10,808 | 0.0000 | | 0.00 | |
| OTEX | Open Text Corp | 38.86 | 38.22 | 38.81 | 492,179 | 0.49 | | 1.28 | |
| OVV | Ovintiv Inc | 55.51 | 53.68 | 53.85 | 154,563 | -1.72 | | 3.10 | |