| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 22.15 | 21.39 | 21.39 | 37.7K | -0.84 | | 3.78 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.88 | 21.16 | 21.51 | 45.9K | -0.52 | | 2.35 | |
| OHI | Omega Healthcare Investors | 49.14 | 47.73 | 48.26 | 1.19M | 0.18 | | 0.37 | |
| OIA | Invesco Muni Income Trust | 6.390 | 6.350 | 6.377 | 78.2K | 0.030 | | 0.47 | |
| OII | Oceaneering International | 38.00 | 35.04 | 35.52 | 865.5K | -2.07 | | 5.51 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.930 | 7.850 | 7.900 | 114.3K | 0.020 | | 0.25 | |
| OPP-A | Rivernorth/Doubleline Strategic | 17.14 | 17.02 | 17.03 | 8.4K | 0.02 | | 0.12 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.90 | 18.69 | 18.90 | 3.1K | 0.28 | | 1.50 | |
| OPTU | Optimum Communications Inc | 1.450 | 1.385 | 1.435 | 1.1M | 0.020 | | 1.41 | |
| ORC | Orchid Island Capital Inc | 7.590 | 7.418 | 7.450 | 6.02M | -0.160 | | 2.11 | |
| ORI | Old Republic International Corp | 43.04 | 42.51 | 42.87 | 802.7K | 0.18 | | 0.42 | |
| OSG | Overseas Shipholding Group Inc | 5.550 | 5.320 | 5.355 | 250.7K | -0.170 | | 3.08 | |
| OTF | Blue Owl Technology Finance Corp | 11.70 | 11.03 | 11.16 | 2.0M | -0.32 | | 2.79 | |
| OXY | Occidental Petroleum Corp | 53.24 | 51.25 | 53.10 | 7.94M | 1.65 | | 3.21 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 31.20 | 29.90 | 31.05 | 100.6K | 1.79 | | 6.12 | |