| OAP3 | Octopus Apollo Vct Plc | 47.60 | 44.20 | 46.10 | 678 | 0.40 | | 0.88 | |
| OAUE | UBS Etf (Ch) - Gold (Usd) A-Dis | 125.6 | 125.6 | 125.6 | 34 | 0.0 | | 0.00 | |
| OBD | Oxford Biodynamics PLC | 0.1100 | 0.1000 | 0.1050 | 15.97M | -0.0060 | | 5.41 | |
| OBI | Ondine Biomedical Inc. | 10.000 | 9.500 | 9.750 | 747.6K | 0.000 | | 0.00 | |
| OCDO | Ocado Group PLC | 287.4 | 276.6 | 283.8 | 4.01M | -2.8 | | 0.98 | |
| OCI | Oakley Capital Investments Limited | 514.8 | 500.0 | 500.0 | 211.3K | -14.0 | | 2.72 | |
| OCTF | First Trust Global Funds Public Limited | 2,297 | 2,297 | 2,297 | 0 | 9 | | 0.38 | |
| OE08 | Bank Of Montreal | 100.4 | 100.4 | 100.4 | 1.0M | 0.0 | | 0.00 | |
| OE61 | The Kingdom Of Morocco | 101.0 | 101.0 | 101.0 | 0 | 0.0 | | 0.00 | |
| OFG | Octopus Future Generations Vct Plc | 80.50 | 80.50 | 80.50 | 0 | 0.00 | | 0.00 | |
| OGDC | Oil and Gas Development Company Limited | 8.050 | 8.050 | 8.050 | 0 | 0.000 | | 0.00 | |
| OGG9 | Gold Bullion Securities | 343.0 | 334.6 | 343.0 | 2.2K | 3.3 | | 0.98 | |
| OGLD | Deutsche Boerse Commodities Gmbh | 121.7 | 117.7 | 121.7 | 6.4K | 2.1 | | 1.72 | |
| OGN | Origin Enterprises Plc | 349.2 | 340.0 | 340.0 | 31.8K | 0.0 | | 0.00 | |
| OGOL | Global X Metal Securities | 56.35 | 56.35 | 56.35 | 1 | 0.00 | | 0.00 | |
| OGZU | Wisdomtree Metal Securities Limited | 354.5 | 348.9 | 354.5 | 100 | -6.2 | | 1.72 | |
| OHGR | One Health Group Plc | 292.5 | 291.0 | 292.5 | 6.2K | 0.0 | | 0.00 | |
| OI20 | Kingdom Of Saudi Arabia (The) | 98.7 | 98.7 | 101.3 | 0 | 0.0 | | 0.00 | |
| OI69 | Natwest Markets PLC | 100.1 | 100.1 | 100.1 | 0 | 0.0 | | 0.00 | |
| OIG | Oryx International Growth Fund | 1,355 | 1,301 | 1,350 | 38.3K | 15 | | 1.12 | |
| OIGB | Vaneck Ucits Etfs Plc - Vaneck Oil | 23.88 | 23.59 | 23.79 | 8.7K | 0.33 | | 1.41 | |
| OIH | Orascom Investment Holding S.A.E | 0.0150 | 0.0140 | 0.0140 | 1.8K | 0.0000 | | 0.00 | |
| OIHV | VanEck Oil Services ETF A USD Acc | 31.55 | 31.37 | 31.44 | 6.9K | 0.45 | | 1.45 | |
| OIL | Onyx Etc Securities Public Limited | 284.3 | 284.3 | 284.3 | 0 | 10.5 | | 3.83 | |
| OIL1 | Onyx Etc Securities Public Limited | 215.2 | 215.2 | 215.2 | 0 | 9.1 | | 4.41 | |
| OIL2 | Wisdomtree WTI Crude Oil 2X Daily Lev | 2,033 | 1,980 | 1,980 | 14.0K | 63 | | 3.27 | |
| OIL3 | UBS Etc [Cmci WTI 3M] USD | 157.7 | 157.7 | 157.7 | 0 | 2.6 | | 1.69 | |
| OILG | UBS Etc [Cmci Wti] GBP | 12,268 | 12,268 | 12,268 | 0 | 175 | | 1.45 | |
| OILU | UBS Etc [Ubs BBG CMCI WTI Crude Idx] USD | 201.1 | 201.1 | 201.1 | 0 | 2.9 | | 1.45 | |
| OIP9 | Shell International Finance B.V | 97.00 | 97.00 | 97.00 | 0 | 0.00 | | 0.00 | |
| OIT | Odyssean Investment Trust PLC | 240.0 | 236.9 | 237.0 | 260.8K | -1.0 | | 0.42 | |
| OKL3 | Ls 3X Long Oklo Etp | 0.5540 | 0.4770 | 0.4790 | 27.5K | -0.1120 | | 18.95 | |
| OM9S | Yorkshire Water Finance PLC | 78.56 | 78.56 | 78.56 | 0 | 0.00 | | 0.00 | |
| OMG | Oxford Metrics plc | 35.88 | 34.90 | 34.90 | 80.2K | 0.00 | | 0.00 | |
| OMI | Orosur Mining Inc | 15.00 | 14.40 | 14.70 | 1.19M | 0.10 | | 0.68 | |
| OMIP | One Media iP Group Plc | 4.550 | 4.430 | 4.550 | 5.0K | 0.000 | | 0.00 | |
| OMU | Old Mutual Ltd | 60.20 | 58.53 | 59.20 | 145.0K | 0.00 | | 0.00 | |
| OMXS | iShares OMX Stockholm Capped UCITS | 816.5 | 809.0 | 811.1 | 1.7K | -4.8 | | 0.58 | |
| ONDO | Ondo InsurTech PLC | 8.500 | 7.700 | 7.700 | 795.6K | -0.300 | | 3.75 | |
| ONT | Oxford Nanopore Technologies Ltd | 217.6 | 198.4 | 200.8 | 2.4M | -19.8 | | 8.98 | |
| ONWD | Onward Opportunities Ltd | 173.5 | 171.2 | 173.5 | 32.9K | 2.0 | | 1.17 | |
| OOA | Octopus Aim Vct Plc | 38.00 | 38.00 | 38.00 | 0 | 0.00 | | 0.00 | |
| OPEN | Ish Re Incl / Diversity ETF | 12.39 | 12.29 | 12.32 | 721 | -0.12 | | 0.94 | |
| OPT | Optima Health plc | 242.0 | 240.0 | 240.0 | 188.6K | 0.0 | | 0.00 | |
| OPTI | OptiBiotix Health Plc | 6.000 | 5.800 | 5.900 | 193.5K | 0.000 | | 0.00 | |
| OQ12 | Standard Chartered PLC | 88.94 | 88.94 | 88.94 | 0 | 0.00 | | 0.00 | |
| ORC1 | Orchard Bond Finance PLC | 95.81 | 95.81 | 96.73 | 0 | 0.00 | | 0.00 | |
| ORC3 | Ls 3X Long Oracle [Orcl] Etp | 3.849 | 3.700 | 3.780 | 10.4K | -0.155 | | 3.94 | |
| ORCA | Orcadian Energy PLC | 16.00 | 13.00 | 14.50 | 31.0K | 0.00 | | 0.00 | |
| ORCH | Orchard Funding Group PLC | 61.00 | 60.00 | 60.50 | 6.1K | 0.00 | | 0.00 | |
| ORCP | Oracle Coalfields Plc | 0.0400 | 0.0350 | 0.0375 | 37.34M | -0.0005 | | 1.32 | |
| ORCY | Oracle (ORCL) Options ETP | 5.585 | 5.508 | 5.508 | 505 | -0.081 | | 1.44 | |
| ORIT | Octopus Renewables Infrastructure Trust | 61.90 | 60.30 | 61.20 | 1.8M | 0.20 | | 0.33 | |
| ORNT | Orient Telecoms Plc | 4.500 | 4.500 | 4.500 | 0 | 0.000 | | 0.00 | |
| ORR | Oriole Resources PLC | 0.2900 | 0.2650 | 0.2650 | 11.98M | -0.0150 | | 5.36 | |
| OS73 | Toyota Finance Australia Limited | 96.17 | 96.17 | 96.17 | 0 | 0.09 | | 0.09 | |
| OSB | OneSavings Bank PLC | 485.6 | 472.2 | 473.6 | 734.7K | -11.8 | | 2.43 | |
| OSEC | Octopus Aim Vct 2 Plc | 30.40 | 30.40 | 30.40 | 0 | 0.00 | | 0.00 | |
| OSX5 | Source Markets Public Limited Company | 60.40 | 60.40 | 60.40 | 100 | -0.07 | | 0.12 | |
| OT06 | Derwent London PLC | 72.10 | 72.10 | 72.10 | 9.6K | 0.00 | | 0.00 | |
| OT1 | Oxford Technology 2 Venture Capital | 19.50 | 19.50 | 19.50 | 0 | 0.00 | | 0.00 | |
| OT3 | Oxford Technology 2 Venture Capital | 10.000 | 8.000 | 10.000 | 20.0K | 0.000 | | 0.00 | |
| OT4 | Oxford Technology 2 Venture Capital | 8.500 | 6.500 | 8.500 | 75.0K | 0.000 | | 0.00 | |
| OTB | On The Beach Group PLC | 178.4 | 173.2 | 174.8 | 542.7K | -1.6 | | 0.91 | |
| OTES | Hellenic Telecommunications Organization | 11.03 | 10.69 | 10.70 | 100 | -0.22 | | 2.01 | |
| OTPD | Gdr [Each Repr 1/2 Ord Huf100][Reg S] | 17.00 | 17.00 | 17.00 | 0 | 0.00 | | 0.00 | |
| OTV2 | Octopus Titan Vct Plc | 20.50 | 19.40 | 20.50 | 1.0K | -0.40 | | 1.91 | |
| OVCT | Oberon Aim Vct Plc | 19.00 | 19.00 | 19.00 | 0 | 0.00 | | 0.00 | |
| OVZA | Wisdomtree Metal Securities Limited | 140.1 | 131.5 | 140.1 | 100 | 2.7 | | 1.94 | |
| OVZB | Wisdomtree Metal Securities Limited | 94.16 | 90.98 | 91.48 | 100 | -11.07 | | 10.79 | |
| OVZC | Wisdomtree Metal Securities Limited | 52.12 | 48.09 | 52.12 | 4.2K | 2.55 | | 5.15 | |
| OXA1 | Physical Gold Euro Hdg Etc | 231.0 | 229.7 | 229.7 | 467 | -4.7 | | 1.99 | |
| OXA2 | Db Etc PLC | 311.6 | 311.6 | 311.6 | 3 | 0.0 | | 0.00 | |
| OXA5 | Physical Gold Etc 27/08/60 | 355.6 | 351.1 | 355.6 | 100 | -0.8 | | 0.21 | |
| OXA6 | Physical Silver Etc 27/08/60 | 530.7 | 530.7 | 530.7 | 141 | 22.5 | | 4.43 | |
| OXB | Oxford BioMedica PLC | 526.7 | 512.0 | 513.0 | 399.4K | -15.0 | | 2.84 | |
| OXH | Oxford Technology 2 Venture Capital | 8.500 | 8.500 | 8.500 | 0 | 0.000 | | 0.00 | |
| OXIG | Oxford Instruments PLC | 3,178 | 2,926 | 2,926 | 140.4K | -122 | | 4.00 | |
| OY69 | Province Of Saskatchewan | 98.47 | 98.47 | 98.47 | 0 | 0.00 | | 0.00 | |
| OZ76 | Nationwide Building Society | 98.25 | 98.25 | 98.25 | 578.0K | 0.00 | | 0.00 | |