| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.85 | 20.65 | 20.65 | 5.6K | -0.05 | | 0.24 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.72 | 20.60 | 20.60 | 8.5K | -0.20 | | 0.95 | |
| OHI | Omega Healthcare Investors | 48.14 | 47.24 | 47.33 | 3.39M | -0.60 | | 1.25 | |
| OIA | Invesco Muni Income Trust | 6.070 | 6.000 | 6.040 | 109.4K | -0.040 | | 0.66 | |
| OII | Oceaneering International | 38.42 | 36.63 | 37.84 | 932.6K | -0.88 | | 2.27 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.710 | 7.640 | 7.650 | 73.4K | -0.160 | | 2.05 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.75 | 16.57 | 16.58 | 3.8K | -0.07 | | 0.44 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.60 | 18.16 | 18.29 | 1.8K | 0.13 | | 0.72 | |
| OPTU | Optimum Communications Inc | 0.8940 | 0.7900 | 0.8043 | 4.87M | -0.0751 | | 8.54 | |
| ORC | Orchid Island Capital Inc | 6.910 | 6.830 | 6.860 | 4.83M | -0.060 | | 0.87 | |
| ORI | Old Republic International Corp | 39.55 | 38.97 | 39.32 | 1.07M | 0.17 | | 0.43 | |
| OSG | Overseas Shipholding Group Inc | 5.740 | 5.550 | 5.650 | 289.3K | -0.030 | | 0.53 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.03 | 9.99 | 10.02 | 17.3K | 0.01 | | 0.10 | |
| OTF | Blue Owl Technology Finance Corp | 11.25 | 11.00 | 11.18 | 1.32M | 0.01 | | 0.09 | |
| OXY | Occidental Petroleum Corp | 59.70 | 57.56 | 59.62 | 16.71M | 2.78 | | 4.89 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 37.66 | 35.53 | 37.59 | 77.8K | 2.79 | | 8.02 | |