| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.20 | 20.03 | 20.20 | 5.3K | -0.03 | | 0.14 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.00 | 19.83 | 19.90 | 3.9K | -0.06 | | 0.28 | |
| OCA.U | Omnichannel Acquisition Corp | 10.61 | 10.23 | 10.28 | 1.9K | -0.02 | | 0.19 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0353 | 0.0351 | 0.0353 | 200 | -0.0047 | | 11.75 | |
| OCAC | Ocean Capital Acquisition Corporation | 9.990 | 9.990 | 9.990 | 200 | 0.010 | | 0.10 | |
| OHI | Omega Healthcare Investors | 45.87 | 45.00 | 45.27 | 279.7K | 0.38 | | 0.85 | |
| OIA | Invesco Muni Income Trust | 5.810 | 5.731 | 5.780 | 86.7K | 0.030 | | 0.52 | |
| OII | Oceaneering International | 45.01 | 43.57 | 44.21 | 113.0K | -0.22 | | 0.50 | |
| OPP | Doubleline Strategic Opportunity Fund | 6.940 | 6.840 | 6.850 | 79.8K | -0.070 | | 1.01 | |
| OPP-A | Rivernorth/Doubleline Strategic | 14.82 | 14.75 | 14.75 | 1.1K | -0.05 | | 0.34 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.20 | 15.90 | 15.90 | 4.5K | -0.03 | | 0.19 | |
| OPTU | Optimum Communications Inc | 0.9136 | 0.8513 | 0.8547 | 947.2K | -0.0482 | | 5.34 | |
| ORC | Orchid Island Capital Inc | 4.995 | 4.750 | 4.935 | 4.14M | 0.165 | | 3.46 | |
| ORI | Old Republic International Corp | 40.12 | 39.50 | 39.54 | 431.3K | 0.27 | | 0.69 | |
| OSG | Overseas Shipholding Group Inc | 4.730 | 4.630 | 4.705 | 33.4K | 0.085 | | 1.84 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.30 | 10.26 | 10.28 | 3.8K | -0.02 | | 0.19 | |
| OTAI | Starlink AI Acquisition Corp. | 10.29 | 10.10 | 10.11 | 6.1K | -0.01 | | 0.10 | |
| OTF | Blue Owl Technology Finance Corp | 9.140 | 8.940 | 8.945 | 927.6K | -0.065 | | 0.72 | |
| OXY | Occidental Petroleum Corp | 63.63 | 61.46 | 62.65 | 4.61M | -0.08 | | 0.12 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 41.00 | 39.70 | 40.85 | 63.3K | 0.51 | | 1.26 | |