| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.46 | 20.46 | 20.46 | 1.3K | -0.27 | | 1.30 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.40 | 20.29 | 20.32 | 3.5K | -0.11 | | 0.54 | |
| OHI | Omega Healthcare Investors | 46.62 | 45.20 | 45.41 | 723.2K | -0.05 | | 0.10 | |
| OIA | Invesco Muni Income Trust | 6.200 | 6.120 | 6.150 | 91.1K | 0.050 | | 0.82 | |
| OII | Oceaneering International | 36.55 | 34.86 | 36.18 | 923.3K | -1.33 | | 3.53 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.780 | 7.660 | 7.710 | 48.0K | 0.080 | | 1.05 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.91 | 16.59 | 16.75 | 2.7K | -0.02 | | 0.12 | |
| OPTU | Optimum Communications Inc | 1.350 | 1.295 | 1.305 | 1.08M | 0.005 | | 0.38 | |
| ORC | Orchid Island Capital Inc | 7.240 | 7.140 | 7.145 | 3.06M | 0.085 | | 1.20 | |
| ORI | Old Republic International Corp | 41.38 | 40.45 | 41.33 | 488.9K | 0.84 | | 2.07 | |
| OSG | Overseas Shipholding Group Inc | 4.600 | 3.960 | 4.070 | 637.7K | -0.410 | | 9.15 | |
| OTF | Blue Owl Technology Finance Corp | 11.54 | 11.10 | 11.15 | 1.06M | 0.03 | | 0.22 | |
| OXY | Occidental Petroleum Corp | 59.75 | 56.25 | 59.50 | 16.01M | -3.45 | | 5.47 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 42.26 | 40.50 | 40.82 | 151.9K | -0.15 | | 0.37 | |