| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.88 | 20.62 | 20.88 | 11.6K | 0.05 | | 0.24 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.78 | 20.56 | 20.73 | 3.2K | 0.04 | | 0.17 | |
| OHI | Omega Healthcare Investors | 47.86 | 47.43 | 47.50 | 231.2K | -0.23 | | 0.48 | |
| OIA | Invesco Muni Income Trust | 6.200 | 6.160 | 6.175 | 84.8K | -0.015 | | 0.24 | |
| OII | Oceaneering International | 39.37 | 38.24 | 38.60 | 229.2K | -0.21 | | 0.53 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.660 | 7.610 | 7.629 | 27.9K | 0.014 | | 0.19 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.61 | 18.42 | 18.42 | 3.2K | 0.06 | | 0.34 | |
| OPTU | Optimum Communications Inc | 0.6470 | 0.6000 | 0.6132 | 1.21M | -0.0566 | | 8.45 | |
| ORC | Orchid Island Capital Inc | 6.940 | 6.850 | 6.895 | 2.06M | -0.025 | | 0.36 | |
| ORI | Old Republic International Corp | 38.37 | 37.88 | 37.92 | 154.8K | -0.45 | | 1.17 | |
| OSG | Overseas Shipholding Group Inc | 5.800 | 5.310 | 5.610 | 190.3K | 0.210 | | 3.89 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.50 | 10.04 | 10.09 | 27.2K | -0.01 | | 0.10 | |
| OTF | Blue Owl Technology Finance Corp | 10.88 | 10.71 | 10.83 | 294.2K | 0.13 | | 1.17 | |
| OXY | Occidental Petroleum Corp | 58.32 | 56.97 | 57.60 | 4.69M | 0.70 | | 1.23 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 35.93 | 33.72 | 34.83 | 69.4K | -0.67 | | 1.89 | |