| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.45 | 20.99 | 21.40 | 13.5K | 0.24 | | 1.13 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.09 | 20.58 | 21.09 | 9.8K | 0.39 | | 1.89 | |
| OHI | Omega Healthcare Investors | 46.96 | 46.27 | 46.48 | 829.3K | -0.15 | | 0.32 | |
| OIA | Invesco Muni Income Trust | 6.166 | 6.100 | 6.115 | 61.6K | -0.015 | | 0.24 | |
| OII | Oceaneering International | 36.80 | 35.61 | 36.25 | 289.5K | 0.48 | | 1.34 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.870 | 7.770 | 7.850 | 70.0K | 0.030 | | 0.38 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.65 | 18.65 | 18.65 | 3.8K | 0.01 | | 0.05 | |
| OPTU | Optimum Communications Inc | 1.530 | 1.460 | 1.485 | 1.77M | -0.035 | | 2.30 | |
| ORC | Orchid Island Capital Inc | 7.240 | 6.620 | 6.855 | 17.93M | -0.505 | | 6.86 | |
| ORI | Old Republic International Corp | 41.43 | 41.09 | 41.26 | 270.4K | 0.03 | | 0.07 | |
| OSG | Overseas Shipholding Group Inc | 4.900 | 4.690 | 4.870 | 135.4K | 0.120 | | 2.53 | |
| OTF | Blue Owl Technology Finance Corp | 12.37 | 12.13 | 12.13 | 556.8K | -0.15 | | 1.18 | |
| OXY | Occidental Petroleum Corp | 57.06 | 55.61 | 56.94 | 4.75M | 1.11 | | 1.99 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 34.36 | 33.17 | 33.80 | 87.6K | 0.39 | | 1.17 | |