| OAP3 | Octopus Apollo VCT PLC | 47.20 | 45.70 | 45.70 | 56 | 0.00 | | 0.00 | |
| OAUE | UBS Etf (Ch) - Gold (Usd) A-Dis | 125.6 | 125.6 | 125.6 | 219 | 0.0 | | 0.00 | |
| OBD | Oxford Biodynamics PLC | 0.1400 | 0.1100 | 0.1200 | 896.1K | -0.0150 | | 12.00 | |
| OBI | Ondine Biomedical Inc | 14.00 | 13.50 | 13.90 | 99.7K | 0.11 | | 0.80 | |
| OCDO | Ocado Group PLC | 193.5 | 181.2 | 184.6 | 2.97M | -2.3 | | 1.23 | |
| OCI | Oakley Capital Investments Limited | 514.0 | 500.0 | 506.0 | 115.7K | -2.0 | | 0.39 | |
| OCTF | First Trust Global Funds Icav | 2,153 | 2,152 | 2,187 | 300 | -7 | | 0.33 | |
| OE08 | Bank Of Montreal | 100.4 | 100.4 | 100.4 | 1.0M | 0.0 | | 0.00 | |
| OE61 | The Kingdom Of Morocco | 106.7 | 106.7 | 106.7 | 0 | 0.0 | | 0.00 | |
| OFG | Octopus Future Generations VCT plc | 77.00 | 77.00 | 77.00 | 0 | 0.00 | | 0.00 | |
| OGDC | OGDC | 8.050 | 8.050 | 8.050 | 0 | 0.000 | | 0.00 | |
| OGG9 | Gold Bullion Securities LD | 319.8 | 319.8 | 319.8 | 0 | -9.7 | | 2.94 | |
| OGLD | Deutsche Boerse Commodities Gmbh | 117.2 | 116.2 | 117.2 | 5.6K | 0.0 | | 0.00 | |
| OGN | Origin Enterprises Plc | 379.0 | 366.0 | 366.0 | 0 | 0.0 | | 0.00 | |
| OGOL | Global X Metal Securities | 56.35 | 56.35 | 56.35 | 20 | 0.00 | | 0.00 | |
| OGZU | Wisdomtree Metal Securities Limited | 341.7 | 339.0 | 341.7 | 100 | 0.4 | | 0.12 | |
| OHGR | One Health Group Plc | 253.0 | 250.0 | 250.0 | 12.0K | 3.4 | | 1.37 | |
| OI20 | Kingdom Of Saudi Arabia (The) | 102.5 | 102.5 | 102.5 | 0 | 0.0 | | 0.00 | |
| OIG | Oryx International Growth Fund | 1,290 | 1,246 | 1,263 | 10.2K | 5 | | 0.43 | |
| OIGB | Vaneck Ucits Etfs Plc - Vaneck Oil | 24.36 | 23.65 | 23.70 | 39.5K | -0.34 | | 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 | 32.52 | 31.16 | 31.55 | 16.5K | -0.62 | | 1.92 | |
| OIL | Onyx Etc Securities Public Limited | 199.6 | 199.6 | 221.7 | 2 | 16.6 | | 8.99 | |
| OIL2 | Wisdomtree WTI Crude Oil 2X Daily Lev | 1,680 | 1,610 | 1,614 | 31.5K | -128 | | 7.35 | |
| OIL3 | UBS AG | 112.2 | 109.7 | 136.2 | 128 | 4.4 | | 3.37 | |
| OILG | UBS AG UBS ETC (CMCI WTI) GBP | 11,295 | 10,615 | 10,615 | 0 | -273 | | 2.50 | |
| OILU | UBS AG | 164.9 | 164.9 | 178.7 | 79 | 3.9 | | 2.20 | |
| OIP9 | Shell International Finance B.V | 97.63 | 97.63 | 97.63 | 0 | 0.00 | | 0.00 | |
| OIT | Odyssean Investment Trust PLC | 228.0 | 221.7 | 228.0 | 279.6K | 6.0 | | 2.70 | |
| OKL3 | Leverage Shares Public Limited Company | 1.491 | 1.156 | 1.156 | 12.5K | -0.098 | | 7.81 | |
| OM9S | Yorkshire Water Finance PLC | 78.72 | 78.72 | 78.72 | 0 | 0.00 | | 0.00 | |
| OMG | Oxford Metrics plc | 39.37 | 38.10 | 38.20 | 67.9K | -0.70 | | 1.80 | |
| OMI | Orosur Mining Inc | 15.70 | 14.59 | 15.25 | 1.39M | -0.75 | | 4.69 | |
| OMIP | One Media iP Group Plc | 4.500 | 4.066 | 4.250 | 55.9K | 0.000 | | 0.00 | |
| OMU | Old Mutual Ltd | 60.60 | 57.60 | 60.60 | 922.5K | 3.60 | | 6.32 | |
| OMXS | iShares OMX Stockholm Capped UCITS | 839.4 | 831.1 | 832.9 | 924 | 7.6 | | 0.92 | |
| ONDO | Ondo InsurTech PLC | 7.112 | 7.000 | 7.000 | 209.0K | 0.430 | | 6.54 | |
| ONT | Oxford Nanopore Technologies Ltd | 111.8 | 108.4 | 108.5 | 893.9K | 0.7 | | 0.65 | |
| ONWD | Onward Opportunities Ltd | 125.0 | 124.0 | 125.0 | 40.3K | 0.9 | | 0.72 | |
| OOA | Octopus Aim Vct PLC | 40.80 | 39.50 | 39.60 | 195.1K | 0.00 | | 0.00 | |
| OPEN | iShares Thomson Reuters Inclusion and | 11.96 | 11.86 | 11.88 | 579 | -0.01 | | 0.08 | |
| OPT | Optima Health plc | 222.0 | 212.8 | 221.0 | 265.7K | 0.8 | | 0.36 | |
| OPTI | OptiBiotix Health Plc | 5.600 | 5.500 | 5.600 | 2.4K | 0.011 | | 0.20 | |
| OQ12 | Standard Chartered PLC | 91.85 | 91.85 | 91.85 | 0 | 0.00 | | 0.00 | |
| ORC1 | Orchard Bond Finance PLC | 95.61 | 95.61 | 96.75 | 0 | 0.00 | | 0.00 | |
| ORC3 | Leverage Shares Public Limited Company | 2.983 | 2.460 | 2.618 | 62.8K | -0.097 | | 3.57 | |
| ORCA | Orcadian Energy PLC | 20.50 | 17.10 | 17.50 | 331.9K | 3.00 | | 17.65 | |
| ORCH | Orchard Funding Group PLC | 63.00 | 62.31 | 62.50 | 26.2K | 0.47 | | 0.75 | |
| ORCP | Oracle Coalfields Plc | 0.0455 | 0.0406 | 0.0455 | 47.71M | 0.0015 | | 3.41 | |
| ORCY | Oracle (ORCL) Options ETP | 5.736 | 5.600 | 5.736 | 12.8K | -0.096 | | 1.68 | |
| ORIT | Octopus Renewables Infrastructure Trust | 62.90 | 60.50 | 61.90 | 1.3M | 0.30 | | 0.49 | |
| ORNT | Orient Telecoms | 5.000 | 4.000 | 4.000 | 0 | 0.000 | | 0.00 | |
| ORR | Oriole Resources PLC | 0.3700 | 0.3500 | 0.3700 | 4.62M | 0.0000 | | 0.00 | |
| OS73 | Toyota Finance Australia Limited | 95.17 | 95.17 | 95.17 | 0 | 0.00 | | 0.00 | |
| OSB | OneSavings Bank PLC | 569.5 | 559.5 | 562.0 | 221.0K | 6.9 | | 1.24 | |
| OSEC | Octopus Aim Vct 2 PLC | 29.70 | 29.70 | 29.80 | 121.8K | 0.20 | | 0.67 | |
| OSX5 | Source Markets Public Limited Company | 60.09 | 60.09 | 60.09 | 0 | -0.63 | | 1.04 | |
| OT06 | Derwent London PLC | 72.10 | 72.10 | 72.10 | 9.6K | 0.00 | | 0.00 | |
| OT1 | Oxford Technology 2 Venture Capital | 21.00 | 19.50 | 19.50 | 0 | 0.00 | | 0.00 | |
| OT3 | Oxford Technology 2 Venture Capital | 11.000 | 10.000 | 10.000 | 500 | 0.000 | | 0.00 | |
| OT4 | Oxford Technology 2 Venture Capital | 10.000 | 8.500 | 8.500 | 0 | 0.000 | | 0.00 | |
| OTB | On The Beach Group PLC | 185.8 | 179.2 | 182.0 | 502.0K | 3.2 | | 1.83 | |
| OTES | Hellenic Telecommunications Organization | 11.35 | 11.35 | 11.35 | 0 | 0.00 | | 0.00 | |
| OTPD | OTP Bank Plc | 17.00 | 17.00 | 17.00 | 0 | 0.00 | | 0.00 | |
| OTV2 | Octopus Titan VCT | 17.50 | 10.00 | 17.50 | 3.0K | 0.00 | | 0.00 | |
| OVCT | New Century AIM VCT 2 PLC | 19.00 | 18.00 | 19.00 | 1.0K | -1.00 | | 5.26 | |
| OVZA | Wisdomtree Metal Securities Limited | 128.6 | 126.6 | 127.5 | 100 | -2.0 | | 1.55 | |
| OVZB | Wisdomtree Metal Securities Limited | 101.3 | 99.1 | 100.1 | 100 | -0.1 | | 0.05 | |
| OVZC | Wisdomtree Metal Securities Limited | 47.05 | 46.26 | 47.00 | 2.5K | 0.15 | | 0.32 | |
| OXA1 | Physical Gold Euro Hdg Etc | 228.0 | 227.5 | 228.0 | 653 | -3.6 | | 1.53 | |
| OXA2 | Db Etc PLC | 296.1 | 296.1 | 296.1 | 1 | 0.0 | | 0.00 | |
| OXA5 | Db Etc PLC | 341.1 | 341.1 | 340.0 | 17 | 8.7 | | 2.56 | |
| OXA6 | Db Etc PLC | 486.8 | 486.8 | 486.8 | 10 | -3.9 | | 0.79 | |
| OXB | Oxford BioMedica PLC | 586.0 | 565.0 | 570.0 | 444.9K | 1.0 | | 0.18 | |
| OXH | Oxford Technology 2 Venture Capital | 10.000 | 10.000 | 8.500 | 22.3K | 0.000 | | 0.00 | |
| OXIG | Oxford Instruments PLC | 3,058 | 2,924 | 2,952 | 97.4K | -71 | | 2.34 | |
| OZ76 | Nationwide Building Society | 98.25 | 98.25 | 98.25 | 578.0K | 0.00 | | 0.00 | |