| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.34 | 20.12 | 20.23 | 6.9K | -0.19 | | 0.93 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.14 | 19.96 | 19.96 | 7.1K | 0.11 | | 0.55 | |
| OCA.U | Omnichannel Acquisition Corp | 10.61 | 10.23 | 10.28 | 1.9K | -0.02 | | 0.19 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0353 | 0.0351 | 0.0353 | 200 | -0.0047 | | 11.75 | |
| OHI | Omega Healthcare Investors | 46.01 | 45.20 | 45.64 | 641.4K | 0.11 | | 0.24 | |
| OIA | Invesco Muni Income Trust | 5.870 | 5.760 | 5.850 | 181.5K | 0.090 | | 1.56 | |
| OII | Oceaneering International | 44.85 | 42.82 | 43.77 | 426.5K | 0.72 | | 1.67 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.000 | 6.850 | 6.960 | 148.7K | 0.080 | | 1.16 | |
| OPP-A | Rivernorth/Doubleline Strategic | 14.91 | 14.77 | 14.80 | 5.6K | 0.13 | | 0.89 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.14 | 15.93 | 15.93 | 10.3K | 0.08 | | 0.50 | |
| OPTU | Optimum Communications Inc | 0.9700 | 0.9027 | 0.9199 | 949.7K | -0.0384 | | 4.01 | |
| ORC | Orchid Island Capital Inc | 5.260 | 4.930 | 4.975 | 5.8M | -0.210 | | 4.05 | |
| ORI | Old Republic International Corp | 39.68 | 38.66 | 39.66 | 1.04M | 0.99 | | 2.56 | |
| OSG | Overseas Shipholding Group Inc | 4.720 | 4.600 | 4.650 | 188.7K | 0.050 | | 1.09 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.30 | 10.26 | 10.30 | 1.3K | -0.02 | | 0.19 | |
| OTF | Blue Owl Technology Finance Corp | 9.930 | 9.120 | 9.125 | 1.57M | -0.305 | | 3.23 | |
| OXY | Occidental Petroleum Corp | 62.51 | 60.43 | 62.39 | 7.72M | 1.72 | | 2.84 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 40.48 | 38.78 | 40.34 | 59.4K | -0.70 | | 1.78 | |