| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.26 | 21.10 | 21.10 | 4.4K | -0.13 | | 0.61 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 21.10 | 21.05 | 21.05 | 2.0K | -0.11 | | 0.50 | |
| OCA.U | Omnichannel Acquisition Corp | 10.21 | 10.18 | 10.18 | 1.0K | -0.05 | | 0.49 | |
| OHI | Omega Healthcare Investors | 48.97 | 47.83 | 48.32 | 699.5K | -0.53 | | 1.08 | |
| OIA | Invesco Muni Income Trust | 6.190 | 6.130 | 6.165 | 69.7K | -0.025 | | 0.40 | |
| OII | Oceaneering International | 42.31 | 40.50 | 42.11 | 427.0K | 1.46 | | 3.59 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.740 | 7.680 | 7.710 | 48.0K | 0.020 | | 0.26 | |
| OPP-A | Rivernorth/Doubleline Strategic | 16.30 | 16.17 | 16.24 | 2.3K | 0.05 | | 0.31 | |
| OPTU | Optimum Communications Inc | 1.120 | 1.060 | 1.070 | 4.7K | 0.005 | | 0.47 | |
| ORC | Orchid Island Capital Inc | 6.800 | 6.790 | 6.790 | 11.6K | -0.020 | | 0.29 | |
| ORI | Old Republic International Corp | 41.62 | 41.26 | 41.44 | 424.3K | 0.13 | | 0.31 | |
| OSG | Overseas Shipholding Group Inc | 6.140 | 5.920 | 6.015 | 207.0K | -0.075 | | 1.23 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.20 | 10.10 | 10.16 | 24.3K | -0.01 | | 0.10 | |
| OTAI | Starlink AI Acquisition Corp. | 9.940 | 9.920 | 9.940 | 11.6K | 0.009 | | 0.09 | |
| OTF | Blue Owl Technology Finance Corp | 10.49 | 10.18 | 10.33 | 1.19M | 0.17 | | 1.62 | |
| OXY | Occidental Petroleum Corp | 54.25 | 53.80 | 53.80 | 34.0K | 0.93 | | 1.75 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 29.92 | 27.20 | 29.83 | 60.1K | 2.90 | | 10.77 | |