| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.70 | 20.44 | 20.56 | 2.4K | -0.06 | | 0.29 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.34 | 20.11 | 20.30 | 3.3K | -0.09 | | 0.44 | |
| OCA.U | Omnichannel Acquisition Corp | 10.61 | 10.22 | 10.26 | 3.2K | -0.09 | | 0.87 | |
| OHI | Omega Healthcare Investors | 47.00 | 46.25 | 46.47 | 1.26M | -0.36 | | 0.77 | |
| OIA | Invesco Muni Income Trust | 5.790 | 5.660 | 5.700 | 221.0K | -0.080 | | 1.39 | |
| OII | Oceaneering International | 46.33 | 45.26 | 46.15 | 481.4K | 0.18 | | 0.39 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.140 | 7.050 | 7.068 | 217.4K | -0.040 | | 0.56 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.29 | 15.25 | 15.26 | 5.9K | 0.00 | | 0.01 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.54 | 16.40 | 16.53 | 3.0K | -0.02 | | 0.11 | |
| OPTU | Optimum Communications Inc | 1.150 | 1.035 | 1.140 | 1.46M | 0.050 | | 4.63 | |
| ORC | Orchid Island Capital Inc | 6.150 | 6.080 | 6.125 | 2.99M | 0.040 | | 0.66 | |
| ORI | Old Republic International Corp | 39.91 | 38.48 | 38.79 | 793.8K | -0.44 | | 1.12 | |
| OSG | Overseas Shipholding Group Inc | 4.440 | 4.260 | 4.380 | 241.1K | -0.040 | | 0.90 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.15 | 10.12 | 10.15 | 5.9K | 0.00 | | 0.00 | |
| OTAI | Starlink AI Acquisition Corp. | 10.010 | 9.990 | 9.990 | 15.0K | -0.015 | | 0.15 | |
| OTF | Blue Owl Technology Finance Corp | 10.74 | 10.48 | 10.49 | 1.39M | -0.15 | | 1.41 | |
| OXY | Occidental Petroleum Corp | 57.70 | 56.18 | 56.31 | 5.21M | -0.94 | | 1.64 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 35.32 | 34.33 | 34.37 | 17.0K | -0.92 | | 2.61 | |