| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.94 | 20.60 | 20.80 | 3.6K | -0.16 | | 0.76 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.10 | 20.69 | 20.84 | 3.2K | 0.08 | | 0.41 | |
| OHI | Omega Healthcare Investors | 46.61 | 45.99 | 46.40 | 1.27M | 0.06 | | 0.13 | |
| OIA | Invesco Muni Income Trust | 6.140 | 6.060 | 6.100 | 145.8K | -0.010 | | 0.16 | |
| OII | Oceaneering International | 38.38 | 37.04 | 37.34 | 782.8K | -0.66 | | 1.74 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.910 | 7.760 | 7.810 | 60.7K | -0.020 | | 0.26 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.58 | 18.40 | 18.40 | 9.6K | -0.10 | | 0.54 | |
| OPTU | Optimum Communications Inc | 1.660 | 1.505 | 1.520 | 1.37M | -0.160 | | 9.58 | |
| ORC | Orchid Island Capital Inc | 7.090 | 6.870 | 7.050 | 6.39M | 0.210 | | 3.07 | |
| ORI | Old Republic International Corp | 40.79 | 39.67 | 40.38 | 1.02M | 0.49 | | 1.23 | |
| OXY | Occidental Petroleum Corp | 58.10 | 56.52 | 57.11 | 4.54M | -0.71 | | 1.23 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 35.70 | 34.57 | 35.05 | 36.3K | -0.73 | | 2.04 | |