| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 19.83 | 19.41 | 19.62 | 7.3K | -0.31 | | 1.53 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 19.50 | 19.35 | 19.39 | 6.4K | -0.19 | | 0.95 | |
| OCA.U | Omnichannel Acquisition Corp | 10.32 | 10.32 | 10.32 | 100 | 0.06 | | 0.58 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0301 | 0.0301 | 0.0301 | 2.0K | -0.0050 | | 14.25 | |
| OCAC | Ocean Capital Acquisition Corporation | 10.03 | 10.03 | 10.03 | 145.0K | 0.02 | | 0.15 | |
| OHI | Omega Healthcare Investors | 48.21 | 46.93 | 47.01 | 1.13M | -1.09 | | 2.27 | |
| OIA | Invesco Muni Income Trust | 5.730 | 5.560 | 5.570 | 232.5K | -0.170 | | 2.96 | |
| OII | Oceaneering International | 35.27 | 34.47 | 34.74 | 445.1K | -0.34 | | 0.97 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.080 | 6.945 | 6.970 | 72.7K | -0.070 | | 0.99 | |
| OPP-A | Rivernorth/Doubleline Strategic | 14.69 | 14.37 | 14.37 | 6.7K | -0.32 | | 2.15 | |
| OPP-B | Rivernorth/Doubleline Strategic | 15.81 | 15.70 | 15.70 | 6.4K | -0.04 | | 0.25 | |
| OPTU | Optimum Communications Inc | 0.6880 | 0.6201 | 0.6344 | 1.65M | -0.0567 | | 8.17 | |
| ORC | Orchid Island Capital Inc | 4.700 | 4.700 | 4.700 | 100 | 0.030 | | 0.64 | |
| ORI | Old Republic International Corp | 40.61 | 39.98 | 40.06 | 581.5K | 0.08 | | 0.20 | |
| OSG | Overseas Shipholding Group Inc | 5.440 | 5.055 | 5.080 | 292.0K | -0.200 | | 3.78 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.34 | 10.34 | 10.34 | 400 | 0.00 | | 0.02 | |
| OTF | Blue Owl Technology Finance Corp | 9.626 | 9.460 | 9.463 | 3.09M | -0.130 | | 1.36 | |
| OXY | Occidental Petroleum Corp | 58.76 | 58.45 | 58.57 | 6.0K | 0.17 | | 0.29 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 36.83 | 35.54 | 36.41 | 21.7K | 1.12 | | 3.17 | |