| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.10 | 20.98 | 21.00 | 3.0K | 0.02 | | 0.10 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.81 | 20.70 | 20.81 | 3.8K | 0.09 | | 0.41 | |
| OHI | Omega Healthcare Investors | 51.92 | 51.31 | 51.73 | 948.3K | 0.75 | | 1.47 | |
| OIA | Invesco Muni Income Trust | 6.200 | 6.130 | 6.150 | 102.1K | -0.020 | | 0.32 | |
| OII | Oceaneering International | 53.10 | 47.66 | 52.77 | 2.8M | 4.75 | | 9.89 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.690 | 7.600 | 7.640 | 81.8K | 0.040 | | 0.53 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.25 | 16.05 | 16.06 | 2.5K | -0.01 | | 0.06 | |
| OPP-B | Rivernorth/Doubleline Strategic | 17.11 | 16.95 | 16.99 | 10.0K | 0.04 | | 0.24 | |
| OPTU | Optimum Communications Inc | 0.8792 | 0.8100 | 0.8198 | 2.78M | -0.0612 | | 7.06 | |
| ORC | Orchid Island Capital Inc | 6.730 | 6.470 | 6.535 | 5.64M | -0.075 | | 1.13 | |
| ORI | Old Republic International Corp | 42.31 | 40.73 | 42.29 | 662.5K | 0.97 | | 2.35 | |
| OSG | Overseas Shipholding Group Inc | 5.730 | 5.470 | 5.590 | 148.9K | 0.050 | | 0.90 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.14 | 10.10 | 10.12 | 5.4K | -0.01 | | 0.10 | |
| OTAI | Starlink AI Acquisition Corp. | 9.940 | 9.915 | 9.935 | 32.9K | 0.030 | | 0.30 | |
| OTF | Blue Owl Technology Finance Corp | 10.020 | 9.880 | 9.950 | 1.37M | 0.020 | | 0.20 | |
| OXY | Occidental Petroleum Corp | 57.93 | 56.77 | 57.30 | 4.72M | -0.31 | | 0.53 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 35.87 | 34.91 | 35.27 | 52.6K | -0.38 | | 1.07 | |