| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.03 | 20.95 | 21.00 | 4.4K | 0.04 | | 0.17 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.79 | 20.72 | 20.79 | 1.3K | 0.04 | | 0.19 | |
| OCA.U | Omnichannel Acquisition Corp | 10.24 | 10.23 | 10.23 | 800 | -0.01 | | 0.10 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0400 | 0.0400 | 0.0400 | 203.5K | -0.0003 | | 30.00 | |
| OHI | Omega Healthcare Investors | 48.72 | 48.34 | 48.46 | 564.8K | -0.22 | | 0.45 | |
| OIA | Invesco Muni Income Trust | 6.109 | 6.050 | 6.100 | 99.1K | 0.090 | | 1.50 | |
| OII | Oceaneering International | 49.29 | 47.93 | 47.96 | 277.6K | -1.28 | | 2.60 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.700 | 7.610 | 7.660 | 125.3K | 0.030 | | 0.39 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.61 | 15.51 | 15.59 | 6.4K | 0.03 | | 0.20 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.95 | 16.79 | 16.95 | 2.0K | 0.18 | | 1.07 | |
| OPTU | Optimum Communications Inc | 0.8512 | 0.7706 | 0.7831 | 1.66M | -0.0356 | | 4.43 | |
| ORC | Orchid Island Capital Inc | 6.586 | 6.420 | 6.560 | 3.85M | 0.140 | | 2.18 | |
| ORI | Old Republic International Corp | 43.37 | 42.94 | 43.03 | 416.8K | -0.42 | | 0.97 | |
| OSG | Overseas Shipholding Group Inc | 5.800 | 4.740 | 4.925 | 879.0K | -0.730 | | 12.90 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.22 | 10.15 | 10.15 | 11.1K | 0.00 | | 0.00 | |
| OTAI | Starlink AI Acquisition Corp. | 9.990 | 9.961 | 9.970 | 6.1K | -0.020 | | 0.20 | |
| OTF | Blue Owl Technology Finance Corp | 11.74 | 11.27 | 11.70 | 2.94M | 0.37 | | 3.27 | |
| OXY | Occidental Petroleum Corp | 56.45 | 55.13 | 55.91 | 4.15M | -0.13 | | 0.23 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 34.41 | 33.34 | 33.95 | 17.8K | -0.23 | | 0.67 | |