| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 22.04 | 21.66 | 21.93 | 19.3K | 0.06 | | 0.27 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.78 | 21.60 | 21.75 | 35.4K | 0.01 | | 0.05 | |
| OHI | Omega Healthcare Investors | 47.94 | 47.33 | 47.90 | 1.87M | 0.50 | | 1.05 | |
| OIA | Invesco Muni Income Trust | 6.340 | 6.280 | 6.300 | 50.4K | -0.040 | | 0.63 | |
| OII | Oceaneering International | 33.40 | 31.79 | 32.36 | 1.23M | -0.79 | | 2.38 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.970 | 7.850 | 7.900 | 189.9K | -0.040 | | 0.50 | |
| OPP-A | Rivernorth/Doubleline Strategic | 17.14 | 17.00 | 17.08 | 4.7K | -0.01 | | 0.03 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.92 | 18.54 | 18.63 | 8.4K | 0.01 | | 0.05 | |
| OPTU | Optimum Communications Inc | 1.660 | 1.581 | 1.620 | 1.89M | -0.050 | | 2.99 | |
| ORC | Orchid Island Capital Inc | 7.550 | 7.380 | 7.500 | 5.84M | -0.030 | | 0.40 | |
| ORI | Old Republic International Corp | 43.32 | 42.45 | 42.56 | 1.86M | -0.01 | | 0.02 | |
| OSG | Overseas Shipholding Group Inc | 5.920 | 5.700 | 5.770 | 227.5K | 0.010 | | 0.17 | |
| OTF | Blue Owl Technology Finance Corp | 12.73 | 12.37 | 12.47 | 1.23M | -0.19 | | 1.50 | |
| OXY | Occidental Petroleum Corp | 46.76 | 45.06 | 45.94 | 8.31M | -0.13 | | 0.28 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 24.22 | 23.13 | 23.90 | 20.6K | -0.16 | | 0.67 | |