| OCG | Outcrop Silver & Gold Corp | 0.5800 | 0.5300 | 0.5700 | 734.9K | 0.0100 | | 1.79 | |
| OGD | Orbit Garant Drilling Inc | 1.560 | 1.500 | 1.500 | 12.1K | -0.080 | | 5.06 | |
| OILD | Savvyshort Geared Crude Oil ETF | 15.66 | 15.66 | 15.66 | 100 | 1.19 | | 8.22 | |
| OILU | Savvylong Geared Crude Oil ETF | 17.62 | 17.47 | 17.47 | 5.1K | 0.32 | | 1.87 | |
| OILY | Evolve Canadian Energy Enhanced Yield IN | 9.610 | 9.540 | 9.600 | 10.0K | 0.140 | | 1.48 | |
| OLY | Olympia Financial Group Inc | 117.5 | 115.7 | 116.5 | 3.6K | 1.1 | | 0.91 | |
| OM | Osisko Metals Incorporated | 0.9200 | 0.8700 | 0.8800 | 1.13M | -0.0300 | | 3.30 | |
| OR | Osisko Gold Royalties Ltd | 57.34 | 55.65 | 57.31 | 530.0K | 0.62 | | 1.09 | |
| OXY | Occidental Petroleum Corporation | 18.12 | 18.07 | 18.09 | 2.6K | -0.24 | | 1.31 | |