| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.75 | 21.35 | 21.70 | 7.4K | 0.01 | | 0.05 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.38 | 21.16 | 21.37 | 6.9K | 0.17 | | 0.80 | |
| OHI | Omega Healthcare Investors | 43.77 | 42.91 | 43.70 | 910.0K | 0.45 | | 1.04 | |
| OIA | Invesco Muni Income Trust | 6.207 | 6.150 | 6.200 | 85.6K | 0.030 | | 0.49 | |
| OII | Oceaneering International | 29.50 | 28.74 | 29.17 | 833.3K | 0.73 | | 2.57 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.870 | 7.820 | 7.850 | 103.5K | 0.009 | | 0.11 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.97 | 18.85 | 18.97 | 800 | 0.12 | | 0.64 | |
| OPTU | Optimum Communications Inc | 1.820 | 1.770 | 1.790 | 1.2M | -0.020 | | 1.10 | |
| ORC | Orchid Island Capital Inc | 8.250 | 8.100 | 8.160 | 5.0M | -0.060 | | 0.73 | |
| ORI | Old Republic International Corp | 39.20 | 37.76 | 37.94 | 2.2M | -1.17 | | 2.99 | |
| OSG | Overseas Shipholding Group Inc | 6.300 | 6.080 | 6.095 | 251.4K | -0.190 | | 3.02 | |
| OTF | Blue Owl Technology Finance Corp | 14.42 | 13.77 | 13.80 | 930.4K | -0.18 | | 1.29 | |
| OXY | Occidental Petroleum Corp | 44.48 | 43.20 | 44.10 | 8.07M | 0.95 | | 2.20 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 22.50 | 21.53 | 22.17 | 190.9K | 0.92 | | 4.33 | |