| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.70 | 20.44 | 20.56 | 2.4K | -0.06 | | 0.29 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.34 | 20.11 | 20.30 | 3.3K | -0.09 | | 0.44 | |
| OCA.U | Omnichannel Acquisition Corp | 10.61 | 10.22 | 10.26 | 3.2K | -0.09 | | 0.87 | |
| OHI | Omega Healthcare Investors | 46.69 | 46.15 | 46.49 | 368.1K | 0.02 | | 0.04 | |
| OIA | Invesco Muni Income Trust | 5.670 | 5.520 | 5.540 | 146.7K | -0.150 | | 2.64 | |
| OII | Oceaneering International | 46.49 | 45.37 | 45.86 | 90.0K | -0.25 | | 0.54 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.073 | 6.990 | 7.000 | 91.2K | -0.060 | | 0.85 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.29 | 15.25 | 15.26 | 5.9K | 0.00 | | 0.01 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.54 | 16.40 | 16.53 | 3.0K | -0.02 | | 0.11 | |
| OPTU | Optimum Communications Inc | 1.130 | 1.070 | 1.075 | 453.7K | -0.055 | | 4.87 | |
| ORC | Orchid Island Capital Inc | 6.140 | 5.970 | 5.995 | 2.55M | -0.125 | | 2.04 | |
| ORI | Old Republic International Corp | 39.00 | 38.61 | 38.79 | 271.3K | 0.01 | | 0.03 | |
| OSG | Overseas Shipholding Group Inc | 4.330 | 4.235 | 4.235 | 75.6K | -0.145 | | 3.31 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.15 | 10.12 | 10.15 | 5.9K | 0.00 | | 0.00 | |
| OTF | Blue Owl Technology Finance Corp | 10.50 | 10.34 | 10.39 | 712.2K | -0.10 | | 0.95 | |
| OXY | Occidental Petroleum Corp | 57.94 | 56.00 | 57.56 | 3.86M | 1.25 | | 2.22 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 35.32 | 34.33 | 34.37 | 17.0K | -0.92 | | 2.61 | |