| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.61 | 21.38 | 21.56 | 6.2K | -0.05 | | 0.23 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.49 | 21.24 | 21.42 | 5.5K | 0.06 | | 0.28 | |
| OHI | Omega Healthcare Investors | 44.98 | 44.18 | 44.31 | 955.9K | -0.35 | | 0.77 | |
| OIA | Invesco Muni Income Trust | 6.090 | 6.070 | 6.090 | 115.3K | 0.040 | | 0.66 | |
| OII | Oceaneering International | 36.42 | 35.25 | 35.77 | 424.7K | 0.26 | | 0.73 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.570 | 7.500 | 7.540 | 81.3K | 0.030 | | 0.40 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.18 | 17.92 | 17.92 | 6.0K | -0.01 | | 0.06 | |
| OPTU | Optimum Communications Inc | 1.280 | 1.150 | 1.155 | 5.0M | -0.095 | | 7.60 | |
| ORC | Orchid Island Capital Inc | 6.690 | 6.620 | 6.655 | 2.02M | 0.030 | | 0.45 | |
| ORI | Old Republic International Corp | 38.84 | 38.33 | 38.49 | 420.5K | -0.24 | | 0.62 | |
| OSG | Overseas Shipholding Group Inc | 5.670 | 5.530 | 5.570 | 120.8K | -0.060 | | 1.07 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.14 | 10.11 | 10.11 | 21.1K | 0.01 | | 0.10 | |
| OTF | Blue Owl Technology Finance Corp | 10.88 | 10.64 | 10.66 | 810.8K | -0.12 | | 1.07 | |
| OXY | Occidental Petroleum Corp | 52.99 | 51.19 | 51.35 | 4.46M | -1.70 | | 3.20 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 31.88 | 31.00 | 31.07 | 23.2K | -0.66 | | 2.08 | |