| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.74 | 21.57 | 21.64 | 5.2K | 0.04 | | 0.19 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.75 | 21.60 | 21.70 | 8.9K | 0.14 | | 0.63 | |
| OHI | Omega Healthcare Investors | 45.60 | 44.75 | 45.58 | 640.4K | 0.80 | | 1.79 | |
| OIA | Invesco Muni Income Trust | 6.360 | 6.260 | 6.325 | 137.3K | 0.060 | | 0.96 | |
| OII | Oceaneering International | 33.89 | 32.55 | 32.92 | 374.9K | -0.25 | | 0.75 | |
| OPP | Doubleline Strategic Opportunity Fund | 8.000 | 7.900 | 7.940 | 96.9K | 0.020 | | 0.25 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.99 | 16.90 | 16.90 | 3.1K | -0.08 | | 0.47 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.87 | 18.72 | 18.85 | 1.3K | 0.03 | | 0.16 | |
| OPTU | Optimum Communications Inc | 1.700 | 1.580 | 1.625 | 1.51M | -0.015 | | 0.91 | |
| ORC | Orchid Island Capital Inc | 7.520 | 7.420 | 7.445 | 3.02M | -0.025 | | 0.33 | |
| ORI | Old Republic International Corp | 42.47 | 41.19 | 42.45 | 835.5K | 1.39 | | 3.39 | |
| OSG | Overseas Shipholding Group Inc | 6.160 | 5.973 | 6.055 | 142.3K | 0.005 | | 0.08 | |
| OTF | Blue Owl Technology Finance Corp | 13.43 | 12.95 | 13.38 | 1.82M | 0.35 | | 2.65 | |
| OXY | Occidental Petroleum Corp | 46.80 | 46.06 | 46.49 | 3.77M | -0.17 | | 0.35 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 24.79 | 23.97 | 24.72 | 92.0K | 0.43 | | 1.77 | |