| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.13 | 20.95 | 21.10 | 5.6K | 0.16 | | 0.76 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.95 | 20.75 | 20.95 | 10.5K | 0.05 | | 0.24 | |
| OCA.U | Omnichannel Acquisition Corp | 10.30 | 10.20 | 10.25 | 131.4K | -0.02 | | 0.15 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.1000 | 0.0300 | 0.0302 | 375.2K | -0.0003 | | 30.00 | |
| OHI | Omega Healthcare Investors | 50.19 | 48.78 | 49.01 | 1.07M | -1.62 | | 3.20 | |
| OIA | Invesco Muni Income Trust | 6.110 | 5.980 | 6.000 | 143.4K | -0.030 | | 0.50 | |
| OII | Oceaneering International | 48.81 | 48.72 | 48.77 | 612 | 0.05 | | 0.10 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.670 | 7.560 | 7.560 | 80.9K | -0.060 | | 0.79 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.76 | 15.55 | 15.55 | 2.5K | -0.37 | | 2.32 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.94 | 16.81 | 16.81 | 7.3K | -0.19 | | 1.13 | |
| OPTU | Optimum Communications Inc | 0.8980 | 0.8310 | 0.8551 | 4.3K | -0.0035 | | 0.41 | |
| ORC | Orchid Island Capital Inc | 6.500 | 6.470 | 6.480 | 8.4K | 0.010 | | 0.15 | |
| ORI | Old Republic International Corp | 43.92 | 43.01 | 43.35 | 703.8K | 0.12 | | 0.28 | |
| OSG | Overseas Shipholding Group Inc | 5.745 | 5.430 | 5.665 | 230.8K | 0.260 | | 4.81 | |
| OTAI | Starlink AI Acquisition Corp. | 10.000 | 9.989 | 9.990 | 1.1K | -0.050 | | 0.50 | |
| OTF | Blue Owl Technology Finance Corp | 10.41 | 10.38 | 10.38 | 302 | 0.07 | | 0.68 | |
| OXY | Occidental Petroleum Corp | 56.20 | 54.82 | 55.00 | 51.8K | -0.47 | | 0.85 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 34.00 | 32.95 | 33.48 | 30.0K | -1.59 | | 4.53 | |