| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 22.21 | 22.10 | 22.10 | 2.8K | 0.02 | | 0.07 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.98 | 21.86 | 21.86 | 11.8K | -0.08 | | 0.36 | |
| OHI | Omega Healthcare Investors | 47.42 | 46.99 | 47.29 | 217.4K | 0.17 | | 0.36 | |
| OIA | Invesco Muni Income Trust | 6.380 | 6.324 | 6.374 | 44.0K | 0.014 | | 0.22 | |
| OII | Oceaneering International | 39.35 | 37.26 | 37.53 | 1.06M | -1.29 | | 3.32 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.900 | 7.840 | 7.870 | 18.6K | 0.030 | | 0.38 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.85 | 18.63 | 18.63 | 8.9K | -0.15 | | 0.77 | |
| OPTU | Optimum Communications Inc | 1.540 | 1.450 | 1.455 | 166.4K | -0.035 | | 2.35 | |
| ORC | Orchid Island Capital Inc | 7.650 | 7.460 | 7.475 | 2.48M | -0.115 | | 1.52 | |
| ORI | Old Republic International Corp | 42.46 | 41.85 | 41.97 | 171.9K | -0.02 | | 0.05 | |
| OSG | Overseas Shipholding Group Inc | 5.280 | 5.010 | 5.280 | 215.5K | 0.190 | | 3.73 | |
| OTF | Blue Owl Technology Finance Corp | 11.60 | 11.35 | 11.37 | 706.5K | -0.16 | | 1.39 | |
| OXY | Occidental Petroleum Corp | 52.14 | 50.60 | 50.87 | 2.15M | -1.08 | | 2.08 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 30.47 | 29.10 | 29.94 | 67.3K | -0.46 | | 1.51 | |