| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 22.30 | 21.91 | 22.22 | 8.3K | -0.02 | | 0.09 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.96 | 21.76 | 21.90 | 10.5K | 0.02 | | 0.09 | |
| OHI | Omega Healthcare Investors | 47.80 | 46.33 | 46.78 | 241.6K | 0.23 | | 0.49 | |
| OIA | Invesco Muni Income Trust | 6.305 | 6.285 | 6.300 | 26.5K | 0.010 | | 0.16 | |
| OII | Oceaneering International | 36.71 | 33.50 | 34.14 | 930.2K | -2.02 | | 5.59 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.940 | 7.860 | 7.891 | 45.6K | 0.011 | | 0.14 | |
| OPP-A | Rivernorth/Doubleline Strategic | 17.10 | 17.02 | 17.10 | 2.8K | 0.08 | | 0.47 | |
| OPP-B | Rivernorth/Doubleline Strategic | 18.93 | 18.66 | 18.89 | 8.5K | 0.15 | | 0.80 | |
| OPTU | Optimum Communications Inc | 1.575 | 1.510 | 1.535 | 626.9K | -0.020 | | 1.29 | |
| ORC | Orchid Island Capital Inc | 7.550 | 7.460 | 7.535 | 2.02M | 0.045 | | 0.60 | |
| ORI | Old Republic International Corp | 41.90 | 40.50 | 41.24 | 717.5K | -0.29 | | 0.69 | |
| OSG | Overseas Shipholding Group Inc | 5.880 | 5.760 | 5.780 | 51.4K | -0.070 | | 1.20 | |
| OTF | Blue Owl Technology Finance Corp | 12.25 | 11.80 | 11.83 | 1.79M | -0.50 | | 4.02 | |
| OXY | Occidental Petroleum Corp | 52.21 | 50.60 | 51.33 | 7.95M | -0.20 | | 0.38 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 30.19 | 27.04 | 29.49 | 517.6K | 4.22 | | 16.70 | |