| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.93 | 21.53 | 21.60 | 13.4K | -0.06 | | 0.28 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.80 | 21.55 | 21.57 | 13.0K | -0.04 | | 0.16 | |
| OHI | Omega Healthcare Investors | 45.86 | 44.99 | 45.29 | 976.9K | -0.29 | | 0.64 | |
| OIA | Invesco Muni Income Trust | 6.300 | 6.218 | 6.230 | 87.3K | -0.010 | | 0.16 | |
| OII | Oceaneering International | 32.37 | 29.95 | 32.19 | 637.5K | 2.42 | | 8.13 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.970 | 7.910 | 7.955 | 107.0K | 0.040 | | 0.51 | |
| OPP-A | Rivernorth/Doubleline Strategic | 17.04 | 16.85 | 16.98 | 2.3K | -0.01 | | 0.07 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.93 | 18.82 | 18.82 | 1.0K | 0.09 | | 0.48 | |
| OPTU | Optimum Communications Inc | 1.680 | 1.580 | 1.630 | 1.3M | 0.040 | | 2.50 | |
| ORC | Orchid Island Capital Inc | 7.690 | 7.570 | 7.615 | 5.4M | 0.005 | | 0.07 | |
| ORI | Old Republic International Corp | 42.28 | 41.51 | 41.78 | 857.5K | 0.43 | | 1.04 | |
| OSG | Overseas Shipholding Group Inc | 6.400 | 6.070 | 6.110 | 228.7K | -0.100 | | 1.61 | |
| OTF | Blue Owl Technology Finance Corp | 12.32 | 11.76 | 12.22 | 1.63M | 0.43 | | 3.64 | |
| OXY | Occidental Petroleum Corp | 46.21 | 46.13 | 46.16 | 2.4K | -0.15 | | 0.32 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 24.38 | 23.00 | 24.29 | 147.9K | 1.16 | | 5.02 | |