| OAP3 | Octopus Apollo Vct Plc | 47.20 | 44.20 | 45.70 | 100 | 0.00 | | 0.00 | |
| OAUE | UBS Etf (Ch) - Gold (Usd) A-Dis | 125.6 | 125.6 | 125.6 | 34 | 0.0 | | 0.00 | |
| OBD | Oxford Biodynamics Plc | 0.1300 | 0.1100 | 0.1150 | 228.14M | -0.0050 | | 4.17 | |
| OBI | Ondine Biomedical Inc | 11.50 | 11.00 | 11.50 | 1.06M | 0.00 | | 0.00 | |
| OCDO | Ocado Group Plc | 216.6 | 205.0 | 216.4 | 2.79M | 11.0 | | 5.36 | |
| OCI | Oakley Capital Investments Limited | 540.0 | 528.0 | 534.0 | 47.6K | 4.0 | | 0.75 | |
| OCTF | First Trust Global Funds Public Limited | 2,216 | 2,216 | 2,216 | 0 | 4 | | 0.17 | |
| OE08 | Bank Of Montreal | 100.4 | 100.4 | 100.4 | 1.0M | 0.0 | | 0.00 | |
| OE61 | The Kingdom Of Morocco | 104.6 | 104.6 | 104.6 | 0 | 0.0 | | 0.00 | |
| OFG | Octopus Future Generations Vct Plc | 77.00 | 77.00 | 77.00 | 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 | 351.2 | 348.6 | 351.2 | 1.1K | 8.0 | | 2.33 | |
| OGLD | Deutsche Boerse Commodities Gmbh | 122.7 | 121.4 | 121.4 | 3.7K | 0.7 | | 0.61 | |
| OGN | Origin Enterprises Plc | 387.0 | 376.7 | 382.5 | 1.3K | 0.0 | | 0.00 | |
| OGOL | Global X Metal Securities | 55.81 | 55.81 | 55.81 | 1.7K | 0.60 | | 1.09 | |
| OGZU | Wisdomtree Metal Securities Limited | 370.5 | 364.7 | 367.1 | 448 | -0.4 | | 0.11 | |
| OHGR | One Health Group Plc | 291.1 | 288.5 | 288.5 | 9.3K | -4.0 | | 1.37 | |
| OI20 | Kingdom Of Saudi Arabia (The) | 102.5 | 102.5 | 102.5 | 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 Ltd | 1,353 | 1,288 | 1,320 | 6.6K | -5 | | 0.38 | |
| OIGB | Vaneck Oil Services Ucits ETF | 26.36 | 25.97 | 26.10 | 7.2K | 0.15 | | 0.59 | |
| OIH | Orascom Investment Holding S.A.E | 0.0150 | 0.0140 | 0.0140 | 1.8K | 0.0000 | | 0.00 | |
| OIHV | Vaneck Oil Services Ucits ETF | 35.50 | 35.03 | 35.24 | 58.2K | 0.18 | | 0.51 | |
| OIL | Onyx Etc Securities Public Limited | 220.4 | 220.4 | 220.4 | 0 | 0.0 | | 0.00 | |
| OIL2 | Wisdomtree WTI Crude Oil 2X Daily Lev | 1,825 | 1,736 | 1,778 | 12.4K | 9 | | 0.52 | |
| OIL3 | UBS Etc [Cmci WTI 3M] USD | 146.5 | 146.5 | 146.5 | 0 | 0.3 | | 0.17 | |
| OILG | UBS Etc [Cmci Wti] GBP | 11,278 | 11,278 | 11,278 | 0 | -50 | | 0.44 | |
| OILU | UBS Etc [Ubs BBG CMCI WTI Crude Idx] USD | 185.2 | 185.2 | 185.2 | 0 | -0.8 | | 0.43 | |
| OIP9 | Shell International Finance B.V | 97.56 | 97.56 | 97.56 | 0 | 0.00 | | 0.00 | |
| OIT | Odyssean Investment Trust Plc | 236.0 | 230.2 | 234.0 | 58.1K | 4.0 | | 1.74 | |
| OKL3 | Ls 3X Long Oklo Etp | 0.7790 | 0.7710 | 0.7790 | 3.5K | 0.1150 | | 17.32 | |
| OM9S | Yorkshire Water Finance PLC | 78.56 | 78.56 | 78.56 | 0 | 0.00 | | 0.00 | |
| OMG | Oxford Metrics Plc | 40.00 | 37.30 | 37.60 | 265.5K | -1.20 | | 3.09 | |
| OMI | Orosur Mining Inc | 15.40 | 14.40 | 14.90 | 3.25M | -0.30 | | 1.97 | |
| OMIP | One Media Ip Group Plc | 4.650 | 4.650 | 4.650 | 0 | 0.000 | | 0.00 | |
| OMU | Old Mutual Limited | 60.40 | 59.00 | 59.40 | 173.1K | 0.40 | | 0.68 | |
| OMXS | Ishares Omx Stockholm Capped Ucits ETF | 854.0 | 837.3 | 850.3 | 15.1K | 15.4 | | 1.84 | |
| ONDO | Ondo Insurtech Plc | 6.500 | 6.000 | 6.000 | 342.1K | -0.250 | | 4.00 | |
| ONT | Oxford Nanopore Technologies Plc | 180.3 | 169.4 | 173.3 | 1.78M | 3.3 | | 1.94 | |
| ONWD | Onward Opportunities Limited | 155.0 | 150.0 | 154.0 | 56.1K | 2.5 | | 1.65 | |
| OOA | Octopus Aim Vct Plc | 37.60 | 37.60 | 37.60 | 0 | 0.00 | | 0.00 | |
| OPEN | Ish Re Incl / Diversity ETF | 12.57 | 12.48 | 12.57 | 272 | 0.05 | | 0.42 | |
| OPT | Optima Health Plc | 245.0 | 243.0 | 244.0 | 17.1K | 0.0 | | 0.00 | |
| OPTI | Optibiotix Health Plc | 6.000 | 5.750 | 5.750 | 17.3K | 0.000 | | 0.00 | |
| OQ12 | Standard Chartered PLC | 91.29 | 91.29 | 91.29 | 0 | 0.00 | | 0.00 | |
| ORC1 | Orchard Bond Finance PLC | 95.86 | 95.86 | 96.85 | 0 | 0.00 | | 0.00 | |
| ORC3 | Ls 3X Long Oracle [Orcl] Etp | 4.941 | 4.377 | 4.941 | 100 | 0.686 | | 16.12 | |
| ORCA | Orcadian Energy Plc | 19.00 | 17.00 | 18.00 | 11.1K | 0.00 | | 0.00 | |
| ORCH | Orchard Funding Group Plc | 61.00 | 60.50 | 60.50 | 18.2K | 0.00 | | 0.00 | |
| ORCP | Oracle Power Plc | 0.0430 | 0.0400 | 0.0400 | 72.5M | -0.0020 | | 4.76 | |
| ORCY | Leverage Shares Public Limited Company | 6.309 | 6.023 | 6.309 | 100 | 0.345 | | 5.78 | |
| ORIT | Octopus Renewables Infrastructure Trust | 62.48 | 61.40 | 61.80 | 559.3K | -0.20 | | 0.32 | |
| ORNT | Orient Telecoms Plc | 4.500 | 4.500 | 4.500 | 0 | 0.000 | | 0.00 | |
| ORR | Oriole Resources Plc | 0.3400 | 0.3100 | 0.3250 | 8.81M | 0.0000 | | 0.00 | |
| OS73 | Toyota Finance Australia Limited | 96.31 | 96.31 | 96.31 | 0 | 0.00 | | 0.00 | |
| OSB | Osb Group Plc | 517.5 | 508.0 | 517.5 | 1.13M | 6.0 | | 1.17 | |
| OSEC | Octopus Aim Vct 2 Plc | 30.20 | 30.20 | 30.20 | 0 | 0.00 | | 0.00 | |
| OSX5 | Invesco Markets PLC | 61.65 | 61.65 | 61.65 | 0 | 0.00 | | 0.00 | |
| 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 | 10.000 | 10.000 | 0 | 0.000 | | 0.00 | |
| OT4 | Oxford Technology 2 Venture Capital | 8.500 | 8.500 | 8.500 | 0 | 0.000 | | 0.00 | |
| OTB | On The Beach Group Plc | 185.2 | 180.8 | 183.8 | 517.4K | 2.6 | | 1.43 | |
| OTES | Hellenic Telecommunications Organization | 11.65 | 11.65 | 11.65 | 0 | 0.00 | | 0.00 | |
| 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 | 17.50 | 17.50 | 17.50 | 0 | 0.00 | | 0.00 | |
| OVCT | Oberon Aim Vct Plc | 19.00 | 19.00 | 19.00 | 0 | 0.00 | | 0.00 | |
| OVZA | Wisdomtree Metal Securities Limited | 143.6 | 138.1 | 143.6 | 100 | 5.1 | | 3.66 | |
| OVZB | Wisdomtree Metal Securities Limited | 111.2 | 106.6 | 111.0 | 100 | 0.9 | | 0.84 | |
| OVZC | Wisdomtree Metal Securities Limited | 52.75 | 50.79 | 50.79 | 5.2K | 0.09 | | 0.18 | |
| OXA1 | Physical Gold Euro Hdg Etc | 252.7 | 248.1 | 252.7 | 2.8K | 7.3 | | 2.98 | |
| OXA2 | Physical Silver Euro Hdg Etc | 339.8 | 330.0 | 330.0 | 100 | -1.6 | | 0.48 | |
| OXA5 | Physical Gold Etc 27/08/60 | 359.9 | 359.9 | 359.9 | 100 | -7.3 | | 1.98 | |
| OXA6 | Physical Silver Etc 27/08/60 | 532.9 | 532.9 | 532.9 | 271 | 0.6 | | 0.11 | |
| OXB | Oxford Biomedica Plc | 435.0 | 421.0 | 426.5 | 526.8K | 2.5 | | 0.59 | |
| OXH | Oxford Technology 2 Venture Capital | 8.500 | 8.500 | 8.500 | 0 | 0.000 | | 0.00 | |
| OXIG | Oxford Instruments Plc | 2,818 | 2,642 | 2,694 | 100.2K | 4 | | 0.15 | |
| OZ76 | Nationwide Building Society | 98.25 | 98.25 | 98.25 | 578.0K | 0.00 | | 0.00 | |