| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.52 | 21.08 | 21.52 | 7.2K | 0.17 | | 0.80 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.25 | 20.88 | 20.98 | 6.8K | -0.25 | | 1.18 | |
| OHI | Omega Healthcare Investors | 44.72 | 44.71 | 44.71 | 600 | -0.02 | | 0.04 | |
| OIA | Invesco Muni Income Trust | 5.965 | 5.900 | 5.910 | 49.7K | -0.090 | | 1.50 | |
| OII | Oceaneering International | 37.48 | 35.50 | 37.18 | 1.1K | -0.02 | | 0.05 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.580 | 7.500 | 7.540 | 71.7K | 0.020 | | 0.27 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.90 | 16.78 | 16.80 | 5.3K | 0.04 | | 0.21 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.22 | 18.13 | 18.19 | 400 | 0.02 | | 0.11 | |
| OPTU | Optimum Communications Inc | 1.385 | 1.240 | 1.250 | 3.44M | -0.060 | | 4.58 | |
| ORC | Orchid Island Capital Inc | 7.070 | 7.010 | 7.039 | 25.3K | 0.089 | | 1.28 | |
| ORI | Old Republic International Corp | 39.31 | 38.12 | 39.20 | 1.57M | 0.94 | | 2.46 | |
| OSG | Overseas Shipholding Group Inc | 4.915 | 4.770 | 4.840 | 505.7K | -0.060 | | 1.22 | |
| OTF | Blue Owl Technology Finance Corp | 12.69 | 12.45 | 12.69 | 16.4K | 0.29 | | 2.34 | |
| OXY | Occidental Petroleum Corp | 60.51 | 59.81 | 60.10 | 291.6K | -1.15 | | 1.88 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 40.08 | 38.28 | 39.14 | 154.0K | 0.87 | | 2.27 | |