| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.13 | 19.86 | 19.95 | 9.3K | -0.11 | | 0.52 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 19.74 | 19.62 | 19.62 | 8.4K | -0.12 | | 0.61 | |
| OCA.U | Omnichannel Acquisition Corp | 10.32 | 10.32 | 10.32 | 100 | 0.06 | | 0.58 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0301 | 0.0301 | 0.0301 | 2.0K | -0.0050 | | 14.25 | |
| OCAC | Ocean Capital Acquisition Corporation | 10.01 | 10.01 | 10.01 | 5.4K | 0.01 | | 0.10 | |
| OHI | Omega Healthcare Investors | 48.85 | 47.99 | 48.69 | 855.3K | -0.13 | | 0.27 | |
| OIA | Invesco Muni Income Trust | 5.852 | 5.770 | 5.790 | 229.8K | -0.080 | | 1.36 | |
| OII | Oceaneering International | 35.38 | 33.71 | 35.05 | 254.1K | 0.21 | | 0.60 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.170 | 7.000 | 7.045 | 128.7K | -0.075 | | 1.05 | |
| OPP-A | Rivernorth/Doubleline Strategic | 14.79 | 14.61 | 14.68 | 9.1K | -0.13 | | 0.88 | |
| OPP-B | Rivernorth/Doubleline Strategic | 15.85 | 15.69 | 15.83 | 8.0K | -0.05 | | 0.31 | |
| OPTU | Optimum Communications Inc | 0.8030 | 0.7202 | 0.7303 | 4.08M | -0.0722 | | 9.02 | |
| ORC | Orchid Island Capital Inc | 5.020 | 4.840 | 4.900 | 4.14M | -0.110 | | 2.20 | |
| ORI | Old Republic International Corp | 40.61 | 39.52 | 40.55 | 901.4K | 0.90 | | 2.27 | |
| OSG | Overseas Shipholding Group Inc | 5.630 | 5.020 | 5.470 | 264.6K | 0.140 | | 2.66 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.36 | 10.34 | 10.34 | 3.1K | -0.02 | | 0.18 | |
| OTAI | Starlink AI Acquisition Corp. | 10.10 | 10.08 | 10.10 | 19.7K | 0.02 | | 0.20 | |
| OTF | Blue Owl Technology Finance Corp | 9.910 | 9.645 | 9.710 | 2.26M | -0.130 | | 1.32 | |
| OXY | Occidental Petroleum Corp | 57.23 | 53.86 | 56.89 | 11.07M | 1.14 | | 2.04 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 35.20 | 32.28 | 34.80 | 28.9K | 0.85 | | 2.50 | |