| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 21.16 | 20.85 | 21.02 | 5.4K | 0.13 | | 0.63 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.98 | 20.60 | 20.64 | 20.3K | -0.05 | | 0.24 | |
| OCA.U | Omnichannel Acquisition Corp | 10.36 | 10.23 | 10.34 | 1.9K | -0.57 | | 5.25 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0400 | 0.0398 | 0.0400 | 32.5K | -0.0003 | | 30.00 | |
| OHI | Omega Healthcare Investors | 46.61 | 45.90 | 46.01 | 677.1K | 0.14 | | 0.31 | |
| OIA | Invesco Muni Income Trust | 6.110 | 6.050 | 6.110 | 104.9K | 0.080 | | 1.33 | |
| OII | Oceaneering International | 51.69 | 50.39 | 51.34 | 227.7K | 0.32 | | 0.63 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.680 | 7.630 | 7.670 | 71.6K | 0.040 | | 0.52 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.59 | 15.53 | 15.53 | 5.9K | -0.02 | | 0.13 | |
| OPP-B | Rivernorth/Doubleline Strategic | 16.90 | 16.77 | 16.77 | 4.7K | -0.13 | | 0.77 | |
| OPTU | Optimum Communications Inc | 0.9099 | 0.7905 | 0.8385 | 1.23M | 0.0051 | | 0.61 | |
| ORC | Orchid Island Capital Inc | 6.670 | 6.610 | 6.630 | 2.28M | 0.010 | | 0.15 | |
| ORI | Old Republic International Corp | 42.96 | 42.42 | 42.77 | 451.9K | 0.30 | | 0.71 | |
| OSG | Overseas Shipholding Group Inc | 4.750 | 4.510 | 4.705 | 308.9K | 0.045 | | 0.97 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.22 | 10.18 | 10.22 | 15.8K | 0.02 | | 0.16 | |
| OTAI | Starlink AI Acquisition Corp. | 10.020 | 9.990 | 9.996 | 3.7K | 0.006 | | 0.06 | |
| OTF | Blue Owl Technology Finance Corp | 11.65 | 11.35 | 11.50 | 3.19M | -0.01 | | 0.09 | |
| OXY | Occidental Petroleum Corp | 58.59 | 57.18 | 57.71 | 4.91M | -0.85 | | 1.44 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 36.03 | 35.34 | 35.76 | 60.3K | -0.78 | | 2.13 | |