| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.99 | 20.61 | 20.83 | 16.8K | 0.04 | | 0.17 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.82 | 20.69 | 20.69 | 11.3K | 0.18 | | 0.88 | |
| OHI | Omega Healthcare Investors | 48.59 | 47.80 | 48.35 | 1.05M | 0.44 | | 0.92 | |
| OIA | Invesco Muni Income Trust | 6.670 | 6.580 | 6.580 | 400 | 0.490 | | 8.05 | |
| OII | Oceaneering International | 39.10 | 39.00 | 39.10 | 621 | 0.05 | | 0.13 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.660 | 7.600 | 7.640 | 107.6K | 0.010 | | 0.13 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.78 | 16.62 | 16.70 | 4.7K | 0.01 | | 0.06 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.59 | 18.34 | 18.36 | 3.3K | -0.02 | | 0.08 | |
| OPTU | Optimum Communications Inc | 0.7137 | 0.6354 | 0.6442 | 3.34M | -0.0196 | | 2.96 | |
| ORC | Orchid Island Capital Inc | 6.855 | 6.800 | 6.855 | 2.5K | 0.005 | | 0.07 | |
| ORI | Old Republic International Corp | 39.61 | 39.11 | 39.41 | 1.12M | 0.06 | | 0.15 | |
| OSG | Overseas Shipholding Group Inc | 5.720 | 5.470 | 5.550 | 234.6K | -0.070 | | 1.25 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.53 | 10.05 | 10.10 | 21.4K | 0.07 | | 0.65 | |
| OTF | Blue Owl Technology Finance Corp | 10.70 | 10.70 | 10.70 | 849 | 0.05 | | 0.47 | |
| OXY | Occidental Petroleum Corp | 57.46 | 56.25 | 56.48 | 83.2K | -0.98 | | 1.70 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 36.98 | 35.50 | 35.50 | 55.6K | -1.27 | | 3.45 | |