| ODV.WT.V | Osisko Development Corp WT V USD | 1.140 | 1.100 | 1.100 | 10.7K | -0.050 | | 4.35 | |
| OML | Omni-Lite Industries Canada Inc | 1.300 | 1.230 | 1.300 | 18.5K | 0.050 | | 4.00 | |
| OMR.H | Ord Mountain Resources Corp | 0.0900 | 0.0800 | 0.0800 | 262.0K | 0.0100 | | 14.29 | |
| ORC.B | Orca Energy Group Inc Cl B | 3.530 | 3.400 | 3.400 | 5.1K | 0.010 | | 0.29 | |
| OTC | Ocumetics Technology Corp | 0.4500 | 0.3500 | 0.4400 | 99.2K | 0.0700 | | 18.92 | |