| S32South32 Ltd | Basic Materials | 233.00 p | −2.59% |
| SAEMiShares MSCI EM IMI ESG Screened UCITS ETF USD (Acc) | — | 9.75 $ | −1.54% |
| SAFESafestore Holdings Plc | Real Estate | 561.00 p | −0.36% |
| SAGASaga plc | Consumer Cyclical | 900.00 p | 1.93% |
| SAGGiShares Global Aggregate Bond UCITS Dist | — | 3.20 £ | −0.06% |
| SAINScottish American Investment Co | Financial Services | 570.00 p | 0.56% |
| SASUiShares MSCI USA ESG Screened UCITS ETF USD (Acc) | — | 15.85 $ | 0.18% |
| SAVSavannah Resources Plc | Basic Materials | 4.50 p | −1.10% |
| SAVESavannah Energy PLC | Energy | 5.51 p | 0.00% |
| SAWDiShares MSCI World ESG Screened UCITS ETF USD (Acc) | — | 13.65 $ | 0.13% |
| SBARSundae Bar Plc | Technology | 4.05 p | 0.00% |
| SBRESabre Insurance Group PLC | Financial Services | 180.00 p | −0.88% |
| SBRYJ Sainsbury PLC | Consumer Defensive | 346.80 p | 0.64% |
| SBTXSkinBioTherapeutics PLC | Healthcare | 4.50 p | −5.26% |
| SCGLSealand Capital Galaxy Ltd | Consumer Cyclical | 0.40 p | 0.00% |
| SCLPScancell Hldgs Plc | Healthcare | 80.00 p | 0.00% |
| SCTSoftcat plc | Technology | 1,694.00 p | 3.90% |
| SDHAiShares $ Short Duration High Yield Corp Bond UCITS USD Acc | — | 7.23 $ | −0.14% |
| SDIAiShares $ Short Duration Corp Bond UCITS Acc | — | 6.39 $ | −0.13% |
| SDLFStandard Life PLC | Financial Services | 944.50 p | 1.02% |
| SDUSiShares MSCI USA ESG Screened UCITS ETF USD (Dist) | — | 14.57 $ | 0.39% |
| SDYSpeedy Hire PLC | Industrials | 13.90 p | −4.92% |
| SEESeeing Machines Limited | Technology | 2.66 p | −7.32% |
| SEITSdcl Energy Efficiency Income Trust PLC | Financial Services | 32.20 p | −0.16% |
| SEMIIshares IV PLC Ishares MSCI Global Semic Ucits USD Acc | — | 13.25 £ | −0.75% |
| SEPLSeplat Petroleum Development Company PLC | Energy | 875.00 p | 3.11% |
| SEQISequoia Econ Infrastructure | Financial Services | 82.20 p | 0.61% |
| SERSerica Energy plc | Energy | 226.20 p | −0.26% |
| SFORS4 Capital PLC | Communication Services | 38.85 p | −0.38% |
| SFRSeverfield PLC | Industrials | 40.00 p | 3.36% |
| SFTSoftware Circle plc | Technology | 16.50 p | −2.94% |
| SGESage Group PLC | Technology | 1,173.00 p | 1.12% |
| SGLNiShares Physical Gold ETC | — | 5,668.00 p | −3.00% |
| SGROSegro Plc | Real Estate | 921.00 p | −0.11% |
| SHAWShawbrook Group PLC | Financial Services | 302.50 p | 4.67% |
| SHCShaftesbury Capital PLC | Real Estate | 148.90 p | 0.40% |
| SHELShell plc | Energy | 3,665.00 p | 0.66% |
| SHISIG plc | Industrials | 8.90 p | 1.14% |
| SHIPTufton Oceanic Assets Ltd | Financial Services | 1.37 $ | −1.26% |
| SKAShuka Minerals Plc | Basic Materials | 3.10 p | 0.00% |
| SLPSylvania Platinum Limited | Basic Materials | 83.40 p | −2.00% |
| SMHVanEck Semiconductor UCITS ETF | — | 95.31 $ | −0.56% |
| SMIFTwentyFour Select Monthly Income Fund Ltd | Financial Services | 82.50 p | 0.49% |
| SMINSmiths Group PLC | Industrials | 2,690.00 p | −0.70% |
| SMLStrategic Minerals Plc | Basic Materials | 4.45 p | −2.20% |
| SMTScottish Mortgage Investment Trust plc | Financial Services | 1,513.00 p | 0.03% |
| SMWHWH Smith PLC | Consumer Cyclical | 398.60 p | −6.69% |
| SNSmith & Nephew PLC | Healthcare | 1,169.50 p | 1.26% |
| SNDASunda Energy Plc | Energy | 1.13 p | −6.25% |
| SNWSSmiths News PLC | Communication Services | 68.00 p | 0.59% |
| SOISchroder Oriental Income Fund | Financial Services | 429.00 p | −1.15% |
| SOSSosandar Plc | Consumer Cyclical | 9.75 p | 0.00% |
| SOUSound Energy PLC | Energy | 1.30 p | 0.00% |
| SOXSLeverage Shares -4x Short Semiconductors ETP Securities | — | 0.48 $ | 1.91% |
| SP5CAmundi Core S&P 500 Swap UCITS ETF Acc | — | 5.56 $ | 0.27% |
| SPECInspecs Group plc | Healthcare | 87.50 p | 0.00% |
| SPISpire Healthcare Group Plc | Healthcare | 247.50 p | 0.00% |
| SPXLSPDR S&P 500 UCITS ETF USD Acc GBP | — | 14.29 £ | 0.65% |
| SPXPInvesco S&P 500 UCITS ETF | — | 1,160.40 p | 0.73% |
| SPXSInvesco S&P 500 UCITS ETF | — | 15.36 $ | 0.31% |
| SPYLSPDR S&P 500 UCITS ETF USD Acc | — | 18.92 $ | 0.30% |
| SQQQLeverage Shares -3x Short US Tech 100 ETP Securities GBP | — | 2,146.00 p | 0.49% |
| SQS5WisdomTree NASDAQ 100 5x Daily Short | — | 34.70 p | 0.58% |
| SRBSerabi Gold PLC | Basic Materials | 180.00 p | −2.07% |
| SRCSigmaroc PLC | Basic Materials | 128.80 p | −0.16% |
| SRESirius Real Estate Limited | Real Estate | 100.20 p | 0.00% |
| SREISchroder Real Estate Investment Trust Ltd | Real Estate | 43.45 p | 0.12% |
| SRESSunrise Resources Plc | Basic Materials | 0.01 p | 0.00% |
| SRPSerco Group | Industrials | 287.40 p | 0.56% |
| SSESse PLC | Utilities | 2,689.00 p | 0.04% |
| SSITSeraphim Space Investment Trust PLC | Financial Services | 179.20 p | −3.14% |
| SSLNiShares Physical Silver ETC | — | 3,586.00 p | −3.96% |
| SSPGSSP Group PLC | Consumer Cyclical | 184.80 p | −2.84% |
| STANStandard Chartered PLC | Financial Services | 2,227.00 p | 0.36% |
| STEMSThree plc | Industrials | 299.00 p | 1.39% |
| STJSt. James's Place plc | Financial Services | 1,160.00 p | 0.35% |
| STXShield Therapeutics plc | Healthcare | 3.30 p | 0.00% |
| SUK2L&G FTSE 100 Super Short Strategy (Daily 2x) UCITS ETF | — | 184.82 p | −0.97% |
| SUNSurgical Innovations Group plc | Healthcare | 0.40 p | 0.00% |
| SUOEiShares € Corp Bond ESG UCITS ETF EUR (Dist) | — | 4.66 € | 0.04% |
| SUPRSupermarket Income REIT PLC | Real Estate | 83.00 p | −0.06% |
| SVMLSovereign Metals Ltd | Basic Materials | 21.50 p | −1.15% |
| SVNSSolvonis Therapeutics plc | Healthcare | 0.09 p | 5.39% |
| SVSSavills | Real Estate | 1,126.00 p | −1.05% |
| SVTSevern Trent PLC | Utilities | 3,330.00 p | 1.03% |
| SWTSwitch Metals Plc | Basic Materials | 4.60 p | 0.00% |
| SYNSynergia Energy Ltd | Energy | 0.01 p | 0.00% |
| SYNCSyncona Limited | Financial Services | 126.80 p | 1.12% |
| SYNTSynthomer plc | Basic Materials | 114.40 p | −0.17% |
