| | SIBN | SI Bone, Inc. | NASD |
| | $SCUSD | Siacoin to US Dollar | CRYPT |
| | SBSW | Sibanye Stillwater Ltd | NYSE |
| | SICAGEN.IN | Sicagen India Ltd | NSE |
| | SICAL.IN | Sical Logistics Ltd. | NSE |
| | SDRC | Sidney Resources Corp | PINK |
| | SIEB | Siebert Financial Corp. | NASD |
| | SIEGY | Siemens AG | PINK |
| | GCTAY | Siemens Gamesa Renewable Energy SA | PINK |
| | GCTAF | Siemens Gamesa Renewable Energy, S.A. | PINK |
| | SIEMENS.IN | Siemens Ltd. | NSE |
| | SNNAQ | Sienna Biopharmaceuticals, Inc. | NASD |
| | SIE.V | Sienna Resources Inc. | TSXV |
| | SIA.TO | Sienna Senior Living Inc. | TSE |
| | SIEN | Sientra, Inc. | NASD |
| | SIRAX | Sierra Core Retirement Fund | USMF |
| | SIRIX | Sierra Core Retirement Fund | USMF |
| | SIRRX | Sierra Core Retirement Fund | USMF |
| | SIRZX | Sierra Core Retirement Fund | USMF |
| | SMTS | Sierra Metals Inc. | AMEX |
| | SMT.TO | Sierra Metals Inc.. | TSE |
| | SRRA | Sierra Oncology, Inc. | NASD |
| | SSICX | Sierra Strategic Income Fund | USMF |
| | SSIRX | Sierra Strategic Income Fund | USMF |
| | SSIZX | Sierra Strategic Income Fund | USMF |
| | STBJX | Sierra Tactical Bond Fund | USMF |
| | SW.TO | Sierra Wireless, Inc. | TSE |
| | SWIR | Sierra Wireless, Inc. | NASD |
| | SIF | SIFCO Industries, Inc. | AMEX |
| | SIFY | Sify Technologies Ltd. | NASD |
| | SHI.L | Sig | LSE |
| | SIGA | SIGA Technologies, Inc. | NASD |
| | SGTX | Sigilon Therapeutics Inc. | NASD |
| | SGLB | Sigma Labs, Inc. | NASD |
| | SGMA.V | Sigma Lithium Resources Corp. | TSXV |
| | SGMA | SigmaTron Intl, Inc. | NASD |
| | SIGL | Signal Advance Inc. | PINK |
| | SIG.L | Signature Aviation | LSE |
| | SBNY | Signature Bank | NASD |
| | SGU.V | Signature Resources Ltd. | TSXV |
| | SIGIND.IN | Signet Industries Ltd | NSE |
| | SIG | Signet Jewelers Ltd. | NYSE |
| | SGFY | Signify Health Inc. | NYSE |
| | SILINV.IN | SIL Investments Ltd | NSE |
| | SLN.L | Silence Therapeutics | LSE |
| | SLGN | Silgan Holdings, Inc. | NASD |
| | SILC | Silicom Ltd. | NASD |
| | SLAB | Silicon Laboratories, Inc. | NASD |
| | SIMO | Silicon Motion Technology Corp. ADS | NASD |
| | SILK | Silk Road Medical, Inc. | NASD |
| | SILO | SILO Pharma Inc. | PINK |
| | ^SIJ21 | Silver - Apr 2021 (EOD) | CME |
| | $SILVER | Silver - Continuous Contract (EOD) | CME |
| | ^SIZ21 | Silver - Dec 2021 (EOD) | CME |
| | ^SIZ22 | Silver - Dec 2022 (EOD) | CME |
| | ^SIZ23 | Silver - Dec 2023 (EOD) | CME |
| | ^SIF22 | Silver - Jan 2022 (EOD) | CME |
| | ^SIN21 | Silver - Jul 2021 (EOD) | CME |
| | ^SIH21 | Silver - Mar 2021 (EOD) | CME |
| | ^SIH22 | Silver - Mar 2022 (EOD) | CME |
| | ^SIK21 | Silver - May 2021 (EOD) | CME |
| | ^SIU21 | Silver - Sep 2021 (EOD) | CME |
| | ^SIU22 | Silver - Sep 2022 (EOD) | CME |
| | SBR.TO | Silver Bear Resources Inc. | TSE |
| | SVB.TO | Silver Bull Resources, Inc. | TSE |
| | SVBL | Silver Bull Resources, Inc. | PINK |
| | SLCRU | Silver Crest Acquisition Corp. | NASD |
| | !SCIDOW | Silver Cross DJ Industrials Index | INDX |
| | !SCIDJT | Silver Cross DJ Transports Index | INDX |
| | !SCIDJU | Silver Cross DJ Utilities Index | INDX |
| | !SCIGDX | Silver Cross Gold Miners Index | INDX |
| | !SCINDX | Silver Cross Nasdaq 100 Index | INDX |
| | !SCINAS | Silver Cross Nasdaq Composite Index | INDX |
| | !SCINYA | Silver Cross NYSE Composite Index | INDX |
| | !SCIOEX | Silver Cross S&P 100 Index | INDX |
| | !SCIMID | Silver Cross S&P 400 Mid Cap Index | INDX |
| | !SCISPX | Silver Cross S&P 500 Large Cap Index | INDX |
| | !SCISML | Silver Cross S&P 600 Small Cap Index | INDX |
| | !SCIXLC | Silver Cross S&P Communication Services Index | INDX |
| | !SCIXLY | Silver Cross S&P Consumer Discretionary Index | INDX |
| | !SCIXLP | Silver Cross S&P Consumer Staples Index | INDX |
| | !SCIXLE | Silver Cross S&P Energy Index | INDX |
| | !SCIXLF | Silver Cross S&P Financial Index | INDX |
| | !SCIXLV | Silver Cross S&P Health Care Index | INDX |
| | !SCIXLI | Silver Cross S&P Industrial Index | INDX |
| | !SCIXLB | Silver Cross S&P Materials Index | INDX |
| | !SCIXLRE | Silver Cross S&P Real Estate Index | INDX |
| | !SCIXLK | Silver Cross S&P Technology Index | INDX |
| | !SCIXLU | Silver Cross S&P Utilities Index | INDX |
| | SLV.CA | Silver Dollar Resources Inc. | CSE |
| | SLVDF | Silver Dollar Resources Inc. | PINK |
| | SILEF | Silver Elephant Mining Corp | PINK |
| | ELEF.TO | Silver Elephant Mining Corp. | TSE |
| | SVG.V | Silver Grail Resources Limited | TSXV |
| | SVLKF | Silver Lake Resources Ltd. | PINK |
| | SLVRF | Silver One Resources Inc. | PINK |
| | SVE.V | Silver One Resources Inc. | TSXV |
| | SNG.V | Silver Range Resources Ltd. | TSXV |
| | SAND.CA | Silver Sands Resources Corp. | CSE |
| | SSRSF | Silver Sands Resources Corp. | PINK |
| | SSPK | Silver Spike Acquisition Corp | NASD |
| | SPKBU | Silver Spike Acquisition Corp. | NASD |
| | SSE.V | Silver Spruce Resources, Inc. | TSXV |
| | SLVR.V | Silver Tiger Metals Inc. | TSXV |
| | VIPR.V | Silver Viper Minerals Corp. | TSXV |
| | VIPRF | Silver Viper Minerals Corp. | PINK |
| | SBTX | Silverback Therapeutics Inc. | NASD |
| | SBOW | SilverBow Resources, Inc. | NYSE |
| | SBEAU | SilverBox Engaged Merger Corp. | NASD |
| | SVM.TO | Silvercorp Metals Inc. | TSE |
| | SVM | Silvercorp Metals, Inc. | AMEX |
| | SAMG | Silvercrest Asset Management Group Inc. | NASD |
| | SIL.TO | SilverCrest Metals Inc. | TSE |
| | SILV | SilverCrest Metals Inc. | AMEX |
| | SI | Silvergate Capital Corp | NYSE |
| | SSNT | SilverSun Technologies, Inc. | NASD |
| | SIMBHALS.IN | Simbhaoli Sugars Ltd | NSE |
| | SIML | Simlatus Corp. | PINK |
| | SFNC | Simmons First National Corp. | NASD |
| | SPG/PJ | Simon Property Group Inc. | NYSE |
| | SPG | Simon Property Group, Inc. | NYSE |
| | SIMPLEXINF.IN | Simplex Infrastructures Ltd. | NSE |
| | QQC | Simplify Nasdaq 100 PLUS Convexity ETF | NASD |
| | QQD | Simplify Nasdaq 100 PLUS Downside Convexity ETF | NASD |
| | SPYC | Simplify US Equity PLUS Convexity ETF | AMEX |
| | SPD | Simplify US Equity PLUS Downside Convexity ETF | AMEX |
| | SPUC | Simplify US Equity PLUS Upside Convexity ETF | AMEX |
| | VCLO | Simplify Volt Cloud and Cybersecurity Disruption ETF | AMEX |
| | VFIN | Simplify Volt Fintech Disruption ETF | AMEX |
| | VPOP | Simplify Volt Pop Culture Disruption ETF | AMEX |
| | VCAR | Simplify Volt RoboCar Disruption and Tech ETF | AMEX |
| | SIMP | Simply Inc. | PINK |
| | SSD | Simpson Mfg Co, Inc. | NYSE |
| | SMSMY | Sims Metal Management Ltd. | PINK |
| | SLP | Simulations Plus, Inc. | NASD |
| | SBGI | Sinclair Broadcast Group, Inc. | NASD |
| | $THSINE | Sine Wave Pattern - Theory | INDX |
| | $SGDAUD | Singapore Dollar to Australian Dollar (EOD) | INDX |
| | $SGDGBP | Singapore Dollar to British Pound Sterling (EOD) | INDX |
| | $SGDEUR | Singapore Dollar to Euro (EOD) | INDX |
| | $SGDCHF | Singapore Dollar to Swiss Franc (EOD) | INDX |
| | $SGDUSD | Singapore Dollar to US Dollar (EOD) | INDX |
| | $STI | Singapore Straits Times Index (EOD) | SGX |
| | SGAPY | Singapore Telecommunications Limited ADR | PINK |
| | SMDM | Singing Machine Co., Inc. | PINK |
| | SINGD | Singlepoint, Inc. | PINK |
| | SIAF | Sino Agro Food Inc. | PINK |
| | SINO | Sino-Global Shipping America, Ltd. | NASD |
| | SHI | SINOPEC Shanghai Petrochemical Co. Ltd. | NYSE |
| | SEI.V | Sintana Energy Inc. | TSXV |
| | SINTERCOM.IN | Sintercom India Ltd | NSE |
| | SINTEX.IN | Sintex Industries Ltd. | NSE |
| | SPTL.IN | Sintex Plastics Technology Ltd. | NSE |
| | SINT | SiNtx Technologies, Inc. | NASD |
| | SIOX | Sio Gene Therapies Inc. | NASD |
| | SIPC | SIPP Industries Inc. | PINK |
| | SRV/UN.TO | SIR Royalty Income Fund | TSE |
| | SIRCA.IN | Sirca Paints India Ltd | NSE |
| | SOI.V | Sirios Resources Inc. | TSXV |
| | SRE.L | Sirius Real Estate Ltd. | LSE |
| | SIRI | Sirius XM Holdings Inc. | NASD |
| | SPNT | SiriusPoint Ltd. | NYSE |
| | SBM.V | Sirona Biochem Corp. | TSXV |
| | SSA.L | Sistema JSFC GDR | LSE |
| | SIBAX | Sit Balanced Fund | USMF |
| | SDMGX | Sit Developing Markets Growth Fund | USMF |
| | SDVGX | Sit Dividend Growth fund | USMF |
| | SNGRX | Sit International Growth | USMF |
| | SNIGX | Sit Large Cap Growth Fund, Inc. | USMF |
| | NBNGX | Sit Mid Cap Growth Fund | USMF |
| | SMTFX | Sit MN Tax-Free Income | USMF |
| | SSMGX | Sit Small Cap Growth Fund | USMF |
| | SNTIX | Sit Tax-Free Income Fund | USMF |
| | SNGVX | Sit U.S. Government Securities | USMF |
| | SITC | SITE Centers Corp. | NYSE |
| | SITE | SiteOne Landscape Supply, Inc. | NYSE |
| | SITINET.IN | Siti Networks Limited | NSE |
| | SITM | SiTime Corp. | NASD |
| | SIG.CA | Sitka Gold Corp. | CSE |
| | SITOQ | SITO Mobile, Ltd. | PINK |
| | SIX | Six Flags Entertainment Corp. | NYSE |
| | TSLX | Sixth Street Specialty Lending | NYSE |
| | SIXW.CA | Sixth Wave Innovations Inc. | CSE |
| | SSOF | Sixty Six Oilfield Services, Inc. | PINK |
| | SIYSIL.IN | Siyaram Silk Mills Ltd. | NSE |
| | SYTA | Siyata Mobile Inc. | NASD |
| | SJVN.IN | SJVN Ltd. | NSE |
| | SJW | SJW Group Inc. | NYSE |
| | $SKLUSD | SKALE Network to US Dollar | CRYPT |
| | SKX | Skechers Usa, Inc. | NYSE |
| | SKE.TO | Skeena Resources Limited | TSE |
| | SKREF | Skeena Resources Ltd. | PINK |
| | $SKEW | SKEW Index - CBOE | INDX |
| | SKFINDIA.IN | SKF India Ltd. | NSE |
| | SKIL.IN | SKIL Infrastructure Ltd | NSE |
| | EDTK | Skillful Craftsman Education Technology Ltd. | NASD |
| | SKLZ | Skillz Inc. | NYSE |
| | SKIPPER.IN | Skipper Ltd. | NSE |
| | SKMEGGPROD.IN | SKM Egg Products Export (India) Ltd. | NSE |
| | SKM | SKTelecom Co. Ltd. | NYSE |
| | SKYG.V | Sky Gold Corp | TSXV |
| | SCT.V | Skychain Technologies Inc. | TSXV |
| | SKYE | Skye Bioscience Inc. | PINK |
| | SKPO | Skye Petroleum Inc | PINK |
| | SYH.V | Skyharbour Resources Ltd. | TSXV |
| | SYHBF | Skyharbour Resources Ltd. | PINK |
| | SHG.V | Skylight Health Group Inc. | TSXV |
| | SHGFF | Skylight Health Group Inc. | PINK |
| | SKY | Skyline Corp. | NYSE |
| | SKSEX | Skyline Special Equities Ptfolio | USMF |
| | SKYW | SkyWest, Inc. | NASD |
| | SWKS | Skyworks Solutions Inc. | NASD |
| | SLG | SL Green Realty Corp. | NYSE |
| | WORK | Slack Technologies Inc. | NYSE |
| | SLAMU | Slam Corp. | NASD |
| | SLNG.CA | SLANG Worldwide Inc. | CSE |
| | SLGWF | SLANG Worldwide, Inc. | PINK |
| | SGR/UN.TO | Slate Grocery REIT | TSE |
| | SOT/UN.TO | Slate Office Real Estate Investment Trust | TSE |
| | SLZ.CA | Slave Lake Zinc Corp. | CSE |
| | ZZZ.TO | Sleep Country Canada Holdings Inc. | TSE |
| | SNBR | Sleep Number Corporation | NASD |
| | JSM | SLM Corp. | NASD |
| | SLMBP | SLM Corp. | NASD |
| | SLM | SLM Holding Corp. | NASD |
| | $SAX | Slovakia (Bratislava) SAX Index (EOD) | BSSE |
| | SM | SM Energy Co. | NYSE |
| | SMAA | SMA Alliance Inc. | PINK |
| | SRTMX | SMA Relationship Trust | USMF |
| | SDV.L | Small Companies Dividend Trust | LSE |
| | SMCWX | SMALLCAP World Fund Inc. (American Funds) | USMF |
| | SCNA | Smart Cannabis Corp. | PINK |
| | SGH | Smart Global Holdings, Inc. | NASD |
| | SMS.L | Smart Metering Systems PLC | LSE |
| | SRU/UN.TO | Smart Real Estate Investment Trust | TSE |
| | SND | Smart Sand, Inc. | NASD |
| | EM | Smart Share Global Ltd. | NASD |
| | MRAD | SmartETFs Advertising & Marketing Technology ETF | AMEX |
| | ADIV | SmartETFs Asia Pacific Dividend Builder ETF | AMEX |
| | DIVS | SmartETFs Dividend Builder ETF | AMEX |
| | MOTO | SmartETFs Smart Transportation & Technology ETF | AMEX |
| | SMBK | SmartFinancial, Inc. | NASD |
| | SMARTLINK.IN | Smartlink Network Systems Ltd. | NSE |
| | SMME | SmartMetric Inc. | PINK |
| | SMAR | Smartsheet, Inc. | NYSE |
| | SMRT.L | Smartspace Software Plc | LSE |
| | SMCAY | SMC Corp. | PINK |
| | SMCE | SMC Entertainment Inc. | PINK |
| | SMVLX | Smead Value Fund | USMF |
| | SVFAX | Smead Value Fund | USMF |
| | SVFFX | Smead Value Fund | USMF |
| | SMGI | SMG Industries Inc. | PINK |
| | SDC | SmileDirectClub Inc. | NASD |
| | SN.L | Smith & Nephew | LSE |
| | SWBI | Smith & Wesson Brands, Inc. | NASD |
| | SMDS.L | Smith (DS) | LSE |
| | SNN | Smith and Nephew PLC | NYSE |
| | AOS | Smith AO Corp. | NYSE |
| | SMSI | Smith Micro Software, Inc. | NASD |
| | SMID | Smith-Midland Corp. | PINK |
| | SMIN.L | Smiths Group | LSE |
| | SSON.L | Smithson Investment Trust Plc | LSE |
| | SMLISUZU.IN | SML Isuzu Ltd. | NSE |
| | SFIO | SmokeFree Innotec Inc | PINK |
| | SMSLIFE.IN | SMS Lifesciences India Ltd | NSE |
| | SMSPHARMA.IN | SMS Pharmaceuticals Ltd. | NSE |
| | SKG.L | Smurfit Kappa Group | LSE |
| | SNAP | Snap Inc. | NYSE |
| | SNA | Snap On Inc. Holding Co. | NYSE |
| | SNC.TO | SNC-Lavalin Group, Inc. | TSE |
| | SPN.V | Snipp Interactive Inc. | TSXV |
| | SNMN | SNM Global Holdings | PINK |
| | SNOAX | Snow Capital Opportunity Fund | USMF |
| | SNOW | Snowflake Inc. | NYSE |
| | SNOWMAN.IN | Snowman Logistics Ltd. | NSE |