| Code | Name | High | Low | Close | Volume | Change | |
|---|
| OBE | Obsidian Energy Ltd | 7.780 | 7.500 | 7.660 | 347,560 | 0.130 |  | 1.73 |   |
| OGC | Oceanagold Corp | 19.67 | 19.33 | 19.53 | 604,933 | 0.22 | | 1.14 | |
| OGD | Orbit Garant Drilling Inc | 1.640 | 1.620 | 1.630 | 9,590 | -0.020 |  | 1.21 | |
| OGI | Organigram Holdings Inc | 1.990 | 1.970 | 1.980 | 46,027 | -0.010 | | 0.50 | |
| OILY | Evolve Canadian Energy Enhanced Yield IN | 9.120 | 9.080 | 9.120 | 2,300 | 0.100 | | 1.11 | |
| OLA | Orla Mining Ltd | 15.50 | 14.72 | 15.35 | 656,439 | 0.74 | | 5.07 | |
| OLY | Olympia Financial Group Inc | 121.8 | 121.2 | 121.2 | 1,032 | -0.6 | | 0.50 | |
| ONC | Oncolytics Bio | 1.610 | 1.430 | 1.600 | 128,163 | 0.090 | | 5.96 | |
| 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 | 23.71 | 23.71 | 23.71 | 374 | -0.06 | | 0.25 | |
| ONEQ | CI One Global Equity ETF | 45.13 | 45.03 | 45.03 | 200 | 0.14 | | 0.31 | |
| ONEX | Onex Corp | 112.2 | 110.0 | 112.0 | 153,509 | -0.1 | | 0.08 | |
| OPT | Optiva Inc | 1.370 | 1.360 | 1.370 | 2,205 | 0.010 | | 0.74 | |
| OR | Osisko Gold Royalties Ltd | 38.17 | 36.92 | 38.14 | 417,130 | 1.51 | | 4.12 | |
| ORA | Aura Minerals Inc | 39.45 | 37.75 | 37.87 | 46,444 | -0.17 | | 0.45 | |
| ORE | Orezone Gold Corp | 1.210 | 1.090 | 1.160 | 3,039,565 | 0.060 | | 5.45 | |
| ORV | Orvana Minerals J | 0.5800 | 0.5700 | 0.5800 | 40,251 | 0.0000 | | 0.00 | |
| OTEX | Open Text Corp | 39.62 | 38.31 | 38.33 | 746,222 | -1.61 | | 4.03 | |
| OVV | Ovintiv Inc | 57.54 | 55.74 | 57.36 | 153,242 | 1.49 | | 2.67 | |