| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.88 | 20.76 | 20.80 | 4.4K | 0.01 | | 0.02 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.82 | 20.51 | 20.51 | 5.4K | -0.05 | | 0.24 | |
| OHI | Omega Healthcare Investors | 48.31 | 47.36 | 47.90 | 1.15M | -0.36 | | 0.75 | |
| OII | Oceaneering International | 39.00 | 37.43 | 38.78 | 274.7K | 0.29 | | 0.75 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.700 | 7.590 | 7.630 | 204.5K | -0.010 | | 0.13 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.69 | 16.63 | 16.69 | 3.9K | 0.07 | | 0.39 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.58 | 18.37 | 18.37 | 2.0K | 0.21 | | 1.16 | |
| OPTU | Optimum Communications Inc | 0.8038 | 0.6577 | 0.6607 | 3.37M | -0.0526 | | 7.37 | |
| ORC | Orchid Island Capital Inc | 6.880 | 6.740 | 6.765 | 3.64M | -0.070 | | 1.02 | |
| ORI | Old Republic International Corp | 40.00 | 39.14 | 39.35 | 805.9K | -0.30 | | 0.76 | |
| OSG | Overseas Shipholding Group Inc | 5.830 | 5.590 | 5.590 | 170.1K | -0.130 | | 2.26 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.21 | 9.91 | 10.04 | 81.0K | -0.03 | | 0.25 | |
| OTF | Blue Owl Technology Finance Corp | 10.82 | 10.62 | 10.62 | 1.65M | -0.12 | | 1.12 | |
| OXY | Occidental Petroleum Corp | 59.17 | 58.07 | 58.83 | 4.82M | -0.02 | | 0.03 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 37.04 | 36.16 | 36.77 | 69.3K | -0.05 | | 0.14 | |