| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 20.69 | 20.57 | 20.69 | 2.6K | 0.03 | | 0.12 | |
| OAK-B | Brookfield Oaktree Holdings Llc [Oak/Pb] | 20.51 | 20.35 | 20.36 | 6.4K | 0.01 | | 0.05 | |
| OCA.U | Omnichannel Acquisition Corp | 10.55 | 10.55 | 10.55 | 100 | -0.07 | | 0.61 | |
| OCA.W | Omnichannel Acquisition Corp WT | 0.0400 | 0.0358 | 0.0358 | 36.9K | -0.0041 | | 10.28 | |
| OCAC | Ocean Capital Acquisition Corporation | 9.960 | 9.860 | 9.950 | 676.0K | 0.020 | | 0.20 | |
| OHI | Omega Healthcare Investors | 47.00 | 46.19 | 46.60 | 1.5M | -0.14 | | 0.30 | |
| OIA | Invesco Muni Income Trust | 6.240 | 5.960 | 5.990 | 102.5K | -0.040 | | 0.66 | |
| OII | Oceaneering International | 53.87 | 51.88 | 53.00 | 610.4K | 0.51 | | 0.97 | |
| OPP | Doubleline Strategic Opportunity Fund | 7.490 | 7.430 | 7.490 | 114.3K | -0.020 | | 0.27 | |
| OPP-A | Rivernorth/Doubleline Strategic | 15.35 | 15.20 | 15.29 | 10.7K | 0.00 | | 0.00 | |
| OPTU | Optimum Communications Inc | 0.8900 | 0.8145 | 0.8500 | 1.79M | -0.0251 | | 2.87 | |
| ORC | Orchid Island Capital Inc | 6.755 | 6.670 | 6.700 | 1.9M | -0.010 | | 0.15 | |
| ORI | Old Republic International Corp | 42.21 | 41.56 | 41.58 | 480.5K | -0.22 | | 0.53 | |
| OSG | Overseas Shipholding Group Inc | 4.590 | 4.490 | 4.560 | 184.9K | 0.040 | | 0.89 | |
| OTA.U | Starlink AI Acquisition Corporation | 10.18 | 10.15 | 10.18 | 2.8K | 0.01 | | 0.05 | |
| OTAI | Starlink AI Acquisition Corp. | 10.650 | 9.980 | 9.990 | 3.1K | 0.010 | | 0.10 | |
| OTF | Blue Owl Technology Finance Corp | 11.33 | 10.89 | 10.95 | 2.51M | -0.15 | | 1.35 | |
| OXY | Occidental Petroleum Corp | 61.84 | 61.20 | 61.30 | 4.14M | -0.22 | | 0.36 | |
| OXY.W | Occidental Petroleum Corp WT [Oxy/W/I] | 39.67 | 39.23 | 39.36 | 39.2K | -0.11 | | 0.28 | |