| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.53 | 21.25 | 21.37 | 7.6K | 0.04 | | 0.17 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.24 | 20.95 | 21.05 | 8.7K | -0.13 | | 0.61 | |
| OHI | Omega Healthcare Investors | 48.00 | 47.19 | 47.30 | 1.08M | -0.53 | | 1.11 | |
| OIA | Invesco Muni Income Trust | 6.120 | 6.080 | 6.120 | 78.1K | 0.031 | | 0.51 | |
| OII | Oceaneering International | 34.98 | 33.36 | 34.55 | 518.1K | 0.86 | | 2.55 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.680 | 7.610 | 7.670 | 78.2K | 0.020 | | 0.26 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.94 | 16.67 | 16.67 | 2.4K | -0.13 | | 0.75 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.21 | 18.07 | 18.07 | 5.4K | -0.12 | | 0.66 | |
| OPTU | Optimum Communications Inc | 1.440 | 1.360 | 1.360 | 1.45M | -0.020 | | 1.44 | |
| ORC | Orchid Island Capital Inc | 7.370 | 7.220 | 7.240 | 5.5M | -0.030 | | 0.41 | |
| ORI | Old Republic International Corp | 40.99 | 40.12 | 40.19 | 547.6K | -0.17 | | 0.42 | |
| OSG | Overseas Shipholding Group Inc | 5.310 | 5.070 | 5.090 | 334.4K | -0.100 | | 1.93 | |
| OTF | Blue Owl Technology Finance Corp | 12.75 | 12.20 | 12.61 | 2.12M | 0.28 | | 2.28 | |
| OXY | Occidental Petroleum Corp | 58.44 | 57.04 | 57.72 | 8.55M | 0.48 | | 0.84 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 36.26 | 35.46 | 35.69 | 87.6K | 0.34 | | 0.96 | |