| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.58 | 21.25 | 21.34 | 2.7K | -0.24 | | 1.11 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.10 | 20.86 | 20.94 | 4.0K | -0.16 | | 0.76 | |
| OHI | Omega Healthcare Investors | 44.86 | 44.07 | 44.72 | 1.53M | 0.24 | | 0.54 | |
| OIA | Invesco Muni Income Trust | 6.190 | 6.150 | 6.160 | 51.9K | -0.040 | | 0.65 | |
| OII | Oceaneering International | 27.69 | 26.86 | 27.28 | 411.0K | 0.20 | | 0.74 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.890 | 7.830 | 7.830 | 126.3K | -0.060 | | 0.76 | |
| OPP-A | Rivernorth/Doubleline Strategic | 17.13 | 17.00 | 17.08 | 3.4K | 0.01 | | 0.06 | |
| OPTU | Optimum Communications Inc | 1.930 | 1.800 | 1.890 | 590.1K | -0.020 | | 1.05 | |
| ORC | Orchid Island Capital Inc | 8.340 | 8.081 | 8.335 | 5.93M | 0.210 | | 2.59 | |
| ORI | Old Republic International Corp | 43.37 | 42.93 | 43.05 | 577.4K | -0.27 | | 0.62 | |
| OSG | Overseas Shipholding Group Inc | 6.330 | 6.040 | 6.070 | 523.3K | -0.250 | | 3.96 | |
| OTF | Blue Owl Technology Finance Corp | 14.44 | 14.12 | 14.15 | 770.1K | -0.34 | | 2.35 | |
| OXY | Occidental Petroleum Corp | 43.70 | 42.63 | 42.70 | 8.27M | -0.47 | | 1.09 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 21.62 | 20.75 | 20.80 | 29.3K | -0.53 | | 2.48 | |