| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.99 | 20.82 | 20.99 | 5.5K | -0.01 | | 0.02 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.78 | 20.75 | 20.75 | 6.0K | -0.04 | | 0.19 | |
| OCA.U | Omnichannel Acquisition Corp | 10.91 | 10.91 | 10.91 | 100 | 0.68 | | 6.68 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0400 | 0.0398 | 0.0400 | 32.5K | -0.0003 | | 30.00 | |
| OHI | Omega Healthcare Investors | 47.35 | 45.83 | 46.05 | 606.9K | -1.35 | | 2.85 | |
| OIA | Invesco Muni Income Trust | 6.080 | 5.980 | 6.020 | 44.7K | -0.020 | | 0.33 | |
| OII | Oceaneering International | 52.00 | 50.64 | 51.02 | 88.3K | -0.09 | | 0.17 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.700 | 7.650 | 7.659 | 38.0K | -0.021 | | 0.27 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.68 | 15.55 | 15.57 | 5.5K | -0.02 | | 0.13 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.90 | 16.78 | 16.80 | 1.5K | -0.15 | | 0.88 | |
| OPTU | Optimum Communications Inc | 0.8201 | 0.7737 | 0.8189 | 806.8K | 0.0300 | | 3.80 | |
| ORC | Orchid Island Capital Inc | 6.560 | 6.470 | 6.540 | 1.25M | 0.035 | | 0.54 | |
| ORI | Old Republic International Corp | 42.55 | 42.05 | 42.45 | 128.6K | -0.02 | | 0.05 | |
| OSG | Overseas Shipholding Group Inc | 4.700 | 4.500 | 4.610 | 447.9K | -0.055 | | 1.18 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.18 | 10.15 | 10.18 | 8.4K | 0.02 | | 0.25 | |
| OTAI | Starlink AI Acquisition Corp. | 10.01 | 9.98 | 10.01 | 188.6K | 0.04 | | 0.40 | |
| OTF | Blue Owl Technology Finance Corp | 11.73 | 11.36 | 11.72 | 883.6K | 0.34 | | 2.99 | |
| OXY | Occidental Petroleum Corp | 59.55 | 58.00 | 59.19 | 2.64M | 0.54 | | 0.92 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 36.68 | 34.73 | 36.62 | 139.2K | 2.67 | | 7.86 | |