| OCG | Outcrop Silver & Gold Corp | 0.3100 | 0.2880 | 0.2950 | 859.3K | -0.0250 | | 7.81 | |
| ODV.WT.A | Osisko Development Corp Wts A | 0.1200 | 0.1200 | 0.1200 | 50.0K | -0.1100 | | 47.83 | |
| ODV.WT.U | Osisko Development Corp Wts USD | 0.2000 | 0.2000 | 0.2000 | 1.2K | -0.0500 | | 20.00 | |
| ODV.WT.V | Osisko Development Corp WT V USD | 1.850 | 1.790 | 1.850 | 17.5K | 0.200 | | 12.12 | |
| OML | Omni-Lite Industries Canada Inc | 1.650 | 1.600 | 1.600 | 5.0K | 0.010 | | 0.63 | |
| OMM | Omineca Mining and Metals Ltd | 0.0850 | 0.0750 | 0.0800 | 449.9K | -0.0050 | | 5.88 | |
| ORCL | Oracle Commodity Holding Corp | 0.0600 | 0.0500 | 0.0550 | 222.8K | -0.0050 | | 8.33 | |