| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.46 | 20.07 | 20.17 | 5.9K | 0.06 | | 0.32 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.11 | 20.00 | 20.06 | 5.0K | -0.04 | | 0.20 | |
| 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 | |
| OHI | Omega Healthcare Investors | 45.21 | 44.28 | 45.17 | 734.9K | 0.76 | | 1.71 | |
| OIA | Invesco Muni Income Trust | 5.770 | 5.670 | 5.680 | 75.1K | -0.040 | | 0.70 | |
| OII | Oceaneering International | 45.61 | 44.36 | 44.42 | 327.4K | -0.39 | | 0.87 | |
| OPP-A | Rivernorth/Doubleline Strategic | 14.58 | 14.45 | 14.53 | 3.2K | -0.07 | | 0.48 | |
| OPP-B | Rivernorth/Doubleline Strategic | 15.83 | 15.83 | 15.83 | 1.2K | -0.23 | | 1.43 | |
| OPTU | Optimum Communications Inc | 1.0000 | 0.9023 | 0.9703 | 2.55M | 0.0395 | | 4.25 | |
| ORC | Orchid Island Capital Inc | 5.100 | 5.050 | 5.090 | 10.1K | 0.040 | | 0.79 | |
| ORI | Old Republic International Corp | 38.27 | 38.27 | 38.27 | 100 | 0.20 | | 0.53 | |
| OSG | Overseas Shipholding Group Inc | 4.578 | 4.578 | 4.578 | 100 | -0.112 | | 2.38 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.27 | 10.21 | 10.21 | 9.4K | -0.03 | | 0.29 | |
| OTAI | Starlink AI Acquisition Corp. | 10.25 | 10.09 | 10.11 | 19.7K | 0.05 | | 0.50 | |
| OTF | Blue Owl Technology Finance Corp | 9.300 | 9.289 | 9.289 | 500 | 0.079 | | 0.86 | |
| OXY | Occidental Petroleum Corp | 61.55 | 61.12 | 61.55 | 125.7K | 0.42 | | 0.69 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 39.49 | 38.50 | 39.18 | 29.4K | 1.13 | | 2.97 | |