| OAP3 | Octopus Apollo Vct Plc | 45.96 | 45.50 | 45.70 | 28.82M | 0.10 | | 0.22 | |
| OAUE | UBS Etf (Ch) - Gold (Usd) A-Dis | 125.6 | 125.6 | 125.6 | 219 | 0.0 | | 0.00 | |
| OBD | Oxford Biodynamics Plc | 0.1720 | 0.1520 | 0.1720 | 56.96M | 0.0110 | | 6.83 | |
| OBI | Ondine Biomedical Inc | 15.00 | 14.50 | 14.75 | 134.3K | 0.05 | | 0.34 | |
| OCDO | Ocado Group Plc | 184.5 | 172.8 | 172.8 | 3.09M | -2.1 | | 1.20 | |
| OCI | Oakley Capital Investments Limited | 478.0 | 473.0 | 473.0 | 519.0K | -2.0 | | 0.42 | |
| OCTF | First Trust Global Funds Icav | 2,187 | 2,187 | 2,187 | 0 | -15 | | 0.67 | |
| OE08 | Bank Of Montreal | 100.4 | 100.4 | 100.4 | 1.0M | 0.0 | | 0.00 | |
| OE61 | The Kingdom Of Morocco | 106.0 | 106.0 | 106.0 | 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 | 323.8 | 320.6 | 323.8 | 100 | -4.3 | | 1.30 | |
| OGLD | Deutsche Boerse Commodities Gmbh | 115.7 | 113.5 | 115.7 | 2.0K | 0.0 | | 0.03 | |
| OGN | Origin Enterprises Plc | 388.9 | 385.0 | 385.0 | 100 | -3.9 | | 1.00 | |
| OGOL | Global X Metal Securities | 52.90 | 52.90 | 52.90 | 575 | -3.45 | | 6.12 | |
| OGZU | Wisdomtree Metal Securities Limited | 339.5 | 335.0 | 339.5 | 100 | 2.6 | | 0.77 | |
| OHGR | One Health Group Plc | 247.0 | 247.0 | 247.0 | 0 | 0.0 | | 0.00 | |
| OI20 | Kingdom Of Saudi Arabia (The) | 103.2 | 103.2 | 103.2 | 0 | 0.0 | | 0.00 | |
| OIG | Oryx International Growth Fund Ltd | 1,258 | 1,200 | 1,258 | 4.5K | 28 | | 2.24 | |
| OIGB | Vaneck Oil Services Ucits ETF | 23.55 | 22.93 | 23.55 | 2.4K | 0.56 | | 2.42 | |
| 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 | 31.11 | 30.22 | 31.11 | 7.7K | 0.78 | | 2.57 | |
| OIL | Onyx Etc Securities Public Limited | 159.9 | 159.9 | 159.9 | 0 | 2.4 | | 1.52 | |
| OIL2 | Wisdomtree WTI Crude Oil 2X Daily Lev | 1,160 | 1,116 | 1,160 | 443 | 35 | | 3.07 | |
| OIL3 | UBS Etc [Cmci WTI 3M] USD | 117.3 | 117.3 | 117.3 | 0 | 2.1 | | 1.85 | |
| OILG | UBS Etc [Cmci Wti] GBP | 9,775 | 9,775 | 9,775 | 0 | 150 | | 1.56 | |
| OILU | UBS Etc [Ubs BBG CMCI WTI Crude Idx] USD | 160.4 | 160.4 | 160.4 | 0 | 2.3 | | 1.47 | |
| OIP9 | Shell International Finance B.V | 97.52 | 97.52 | 97.52 | 0 | 0.00 | | 0.00 | |
| OIT | Odyssean Investment Trust Plc | 211.0 | 206.2 | 209.0 | 92.2K | 1.0 | | 0.48 | |
| OKL3 | Leverage Shares Public Limited Company | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OKL3 | Leverage Shares Public Limited Company | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OKL3 | Leverage Shares Public Limited Company | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OKL3 | Leverage Shares Public Limited Company | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OKL3 | Leverage Shares Public Limited Company | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OKL3 | Leverage Shares Public Limited Company | 0.0000 | 0.0000 | 0.0000 | 0 | 0.0000 | | NaN | |
| OKL3 | Leverage Shares Public Limited Company | 3.199 | 2.569 | 2.604 | 9.1K | -0.426 | | 14.06 | |
| OM9S | Yorkshire Water Finance PLC | 78.72 | 78.72 | 78.72 | 0 | 0.00 | | 0.00 | |
| OMG | Oxford Metrics Plc | 40.00 | 39.00 | 39.10 | 801.7K | -0.50 | | 1.26 | |
| OMI | Orosur Mining Inc | 18.20 | 17.25 | 17.85 | 789.4K | 0.05 | | 0.28 | |
| OMIP | One Media Ip Group Plc | 4.150 | 4.150 | 4.150 | 0 | 0.085 | | 2.09 | |
| OMU | Old Mutual Limited | 62.00 | 60.64 | 61.80 | 62.2K | 0.80 | | 1.31 | |
| OMXS | Ishares Omx Stockholm Capped Ucits ETF | 829.5 | 824.5 | 828.5 | 1.4K | 11.3 | | 1.38 | |
| ONDO | Ondo Insurtech Plc | 7.000 | 5.500 | 6.300 | 28.17M | -0.200 | | 3.08 | |
| ONT | Oxford Nanopore Technologies Plc | 121.3 | 115.3 | 121.3 | 1.29M | 5.3 | | 4.57 | |
| ONWD | Onward Opportunities Limited | 128.7 | 124.6 | 125.0 | 37.1K | -3.9 | | 3.03 | |
| OOA | Octopus Aim Vct Plc | 39.80 | 39.80 | 39.80 | 0 | 0.00 | | 0.00 | |
| OPEN | Ish Re Incl / Diversity ETF | 12.15 | 12.08 | 12.08 | 11.4K | 0.07 | | 0.57 | |
| OPT | Optima Health Plc | 195.0 | 190.0 | 191.5 | 32.5K | -0.3 | | 0.16 | |
| OPTI | Optibiotix Health Plc | 6.350 | 6.195 | 6.350 | 372.1K | 0.200 | | 3.25 | |
| OQ12 | Standard Chartered PLC | 91.37 | 91.37 | 91.02 | 0 | 0.00 | | 0.00 | |
| ORC1 | Orchard Bond Finance PLC | 94.15 | 94.15 | 96.75 | 0 | 0.00 | | 0.00 | |
| ORC3 | Leverage Shares Public Limited Company | 6.975 | 5.743 | 5.928 | 12.0K | -0.970 | | 14.06 | |
| ORCA | Orcadian Energy Plc | 12.50 | 12.00 | 12.25 | 12.7K | 0.00 | | 0.00 | |
| ORCH | Orchard Funding Group Plc | 60.80 | 57.00 | 60.00 | 149.3K | 2.82 | | 4.93 | |
| ORCP | Oracle Power Plc | 0.0600 | 0.0500 | 0.0580 | 232.21M | 0.0070 | | 13.73 | |
| ORCY | Leverage Shares Public Limited Company | 8.352 | 7.891 | 7.891 | 100 | -0.701 | | 8.16 | |
| ORIT | Octopus Renewables Infrastructure Trust | 67.29 | 64.20 | 66.20 | 1.99M | 1.20 | | 1.85 | |
| ORNT | Orient Telecoms Plc | 4.000 | 4.000 | 4.000 | 0 | 0.000 | | 0.00 | |
| ORR | Oriole Resources Plc | 0.3800 | 0.3550 | 0.3650 | 6.46M | -0.0150 | | 3.95 | |
| OS73 | Toyota Finance Australia Limited | 95.17 | 95.17 | 95.17 | 0 | 0.00 | | 0.00 | |
| OSB | Osb Group Plc | 541.5 | 527.5 | 538.5 | 655.9K | 8.5 | | 1.60 | |
| OSEC | Octopus Aim Vct 2 Plc | 30.00 | 30.00 | 30.00 | 0 | 0.00 | | 0.00 | |
| OSX5 | Invesco Markets PLC | 61.18 | 61.18 | 61.18 | 80 | 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 | 9.000 | 9.000 | 9.000 | 0 | 0.000 | | 0.00 | |
| OTB | On The Beach Group Plc | 178.6 | 165.4 | 178.0 | 991.0K | 8.2 | | 4.83 | |
| OTES | Hellenic Telecommunications Organization | 11.12 | 11.12 | 11.12 | 0 | 0.11 | | 1.00 | |
| 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 | 18.50 | 18.50 | 18.50 | 0 | 8.50 | | 85.00 | |
| OVCT | Oberon Aim Vct Plc | 23.50 | 20.00 | 23.50 | 1.0K | 3.50 | | 17.50 | |
| OVZA | Wisdomtree Metal Securities Limited | 128.8 | 124.4 | 128.8 | 100 | 1.5 | | 1.15 | |
| OVZB | Wisdomtree Metal Securities Limited | 98.54 | 93.00 | 98.54 | 100 | 4.21 | | 4.46 | |
| OVZC | Wisdomtree Metal Securities Limited | 49.86 | 45.31 | 49.86 | 12.9K | 2.47 | | 5.20 | |
| OXA1 | Physical Gold Euro Hdg Etc | 229.7 | 224.3 | 229.7 | 1.0K | 3.3 | | 1.47 | |
| OXA2 | Physical Silver Euro Hdg Etc | 297.7 | 294.1 | 297.7 | 146 | -4.4 | | 1.45 | |
| OXA5 | Physical Gold Etc 27/08/60 | 338.6 | 338.6 | 338.6 | 100 | -17.5 | | 4.91 | |
| OXA6 | Physical Silver Etc 27/08/60 | 511.3 | 511.3 | 511.3 | 100 | -28.2 | | 5.23 | |
| OXB | Oxford Biomedica Plc | 635.0 | 610.0 | 634.0 | 355.6K | 20.0 | | 3.26 | |
| OXH | Oxford Technology 2 Venture Capital | 8.500 | 8.500 | 8.500 | 0 | 0.000 | | 0.00 | |
| OXIG | Oxford Instruments Plc | 3,054 | 2,900 | 2,938 | 288.1K | 22 | | 0.75 | |
| OZ76 | Nationwide Building Society | 98.25 | 98.25 | 98.25 | 578.0K | 0.00 | | 0.00 | |