| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.08 | 20.51 | 21.07 | 16.8K | 0.32 | | 1.54 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.67 | 20.36 | 20.53 | 16.6K | 0.07 | | 0.36 | |
| OHI | Omega Healthcare Investors | 46.39 | 45.50 | 46.06 | 1.72M | -0.07 | | 0.14 | |
| OIA | Invesco Muni Income Trust | 6.240 | 6.180 | 6.200 | 64.5K | 0.050 | | 0.81 | |
| OII | Oceaneering International | 37.42 | 36.11 | 37.28 | 347.4K | -0.38 | | 1.01 | |
| ONT | Montrose Environmental Group Inc | 22.43 | 21.50 | 22.07 | 260.6K | 0.74 | | 3.47 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.890 | 7.836 | 7.870 | 35.7K | 0.010 | | 0.13 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.68 | 16.56 | 16.57 | 2.8K | -0.02 | | 0.13 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.40 | 18.21 | 18.30 | 3.3K | 0.12 | | 0.66 | |
| OPTU | Optimum Communications Inc | 1.420 | 1.380 | 1.399 | 943.0K | -0.021 | | 1.48 | |
| ORC | Orchid Island Capital Inc | 7.000 | 6.910 | 6.965 | 3.14M | 0.035 | | 0.51 | |
| ORI | Old Republic International Corp | 39.75 | 39.02 | 39.31 | 449.0K | 0.06 | | 0.15 | |
| OSG | Overseas Shipholding Group Inc | 4.470 | 4.210 | 4.230 | 314.6K | -0.150 | | 3.42 | |
| OTF | Blue Owl Technology Finance Corp | 11.85 | 11.36 | 11.76 | 2.92M | 0.13 | | 1.12 | |
| OXY | Occidental Petroleum Corp | 56.69 | 54.74 | 55.04 | 13.86M | -4.30 | | 7.25 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 37.99 | 37.32 | 37.39 | 66.5K | -0.99 | | 2.58 | |