| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.64 | 20.08 | 20.48 | 20.5K | 0.27 | | 1.33 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.19 | 19.91 | 19.95 | 10.9K | -0.05 | | 0.25 | |
| OCA.U | Omnichannel Acquisition Corp | 10.29 | 10.29 | 10.29 | 100 | 0.07 | | 0.68 | |
| OCAC | Ocean Capital Acquisition Corporation | 9.980 | 9.960 | 9.980 | 1.6K | 0.010 | | 0.10 | |
| OHI | Omega Healthcare Investors | 47.59 | 47.00 | 47.00 | 1.2K | -0.34 | | 0.72 | |
| OIA | Invesco Muni Income Trust | 5.820 | 5.760 | 5.780 | 162.8K | -0.080 | | 1.37 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.340 | 7.265 | 7.280 | 112.7K | -0.080 | | 1.09 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.29 | 15.12 | 15.22 | 4.2K | 0.01 | | 0.07 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.74 | 16.32 | 16.54 | 5.2K | 0.12 | | 0.70 | |
| OPTU | Optimum Communications Inc | 0.9600 | 0.9600 | 0.9600 | 152 | -0.0281 | | 2.84 | |
| ORC | Orchid Island Capital Inc | 6.250 | 6.233 | 6.248 | 14.2K | 0.018 | | 0.29 | |
| ORI | Old Republic International Corp | 41.85 | 41.05 | 41.33 | 574.8K | 0.37 | | 0.90 | |
| OSG | Overseas Shipholding Group Inc | 5.070 | 4.790 | 4.995 | 286.5K | 0.160 | | 3.31 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.18 | 10.17 | 10.17 | 3.4K | 0.01 | | 0.10 | |
| OTF | Blue Owl Technology Finance Corp | 10.84 | 10.58 | 10.64 | 1.65M | -0.08 | | 0.75 | |
| OXY | Occidental Petroleum Corp | 62.50 | 61.75 | 61.96 | 18.3K | 0.18 | | 0.29 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 41.00 | 39.60 | 39.65 | 182.7K | 0.15 | | 0.38 | |