Similarweb (SMWB) Institutional Ownership $8.24 -0.10 (-1.14%) Closing price 06/11/2025 03:59 PM EasternExtended Trading$8.42 +0.19 (+2.25%) As of 04:42 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Similarweb (NYSE:SMWB)CurrentInstitutional OwnershipPercentage57.59%Number ofInstitutional Buyers(last 12 months)84TotalInstitutional Inflows(last 12 months)$192.71MNumber ofInstitutional Sellers(last 12 months)33TotalInstitutional Outflows(last 12 months)$37.92M Get SMWB Insider Trade Alerts Want to know when executives and insiders are buying or selling Similarweb stock? 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Email Address Skip Chart & View Institutional Buying and Selling Data SMWB Institutional Buying and Selling by Quarter Similarweb Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/21/2025 Acadian Asset Management LLC185,065$1.53M0.0%-79.2%0.224% 5/19/2025 Palogic Value Management L.P.104,423$864K0.4%N/A0.126% 5/16/2025 S Squared Technology LLC1,000,491$8.27M4.2%-5.3%1.211% 5/16/2025 Goldman Sachs Group Inc.20,899$173K0.0%-72.9%0.025% 5/15/2025 PDT Partners LLC94,671$783K0.1%+151.3%0.115% 5/15/2025 Cubist Systematic Strategies LLC185,502$1.53M0.0%+80.2%0.225% 5/15/2025 Palogic Value Management L.P.104,423$864K0.4%N/A0.126% 5/15/2025 Trexquant Investment LP213,683$1.77M0.0%+104.5%0.259% 5/14/2025 Freedom Investment Management Inc.11,551$96K0.0%-14.5%0.014% 5/14/2025 T. Rowe Price Investment Management Inc.1,410,826$11.67M0.0%+109.1%1.708% Get the Latest News and Ratings for SMWB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Similarweb and its competitors with MarketBeat's FREE daily newsletter. 5/14/2025 Quantbot Technologies LP46,600$385K0.0%+57.2%0.056% 5/14/2025 Wellington Management Group LLP889,363$7.36M0.0%N/A1.076% 5/13/2025 Alpha Family Trust851,669$7.04M4.1%-25.0%1.031% 5/13/2025 Menora Mivtachim Holdings LTD.2,246,470$18.58M0.1%+33.2%2.719% 5/13/2025 Cresset Asset Management LLC34,867$288K0.0%-24.7%0.042% 5/13/2025 American Century Companies Inc.727,275$6.02M0.0%N/A0.880% 5/13/2025 Russell Investments Group Ltd.270,594$2.24M0.0%-24.3%0.328% 5/12/2025 Nuveen LLC722,971$5.98M0.0%N/A0.875% 5/12/2025 Connor Clark & Lunn Investment Management Ltd.806,174$6.67M0.0%+19.0%0.976% 5/12/2025 Herald Investment Management Ltd300,000$2.48M0.5%N/A0.363% 5/12/2025 Telemark Asset Management LLC230,000$1.90M0.2%-23.3%0.278% 5/12/2025 Y.D. More Investments Ltd1,399,863$11.58M1.0%-3.4%1.694% 5/9/2025 CenterBook Partners LP807,696$6.68M0.4%+307.2%0.978% 5/9/2025 Blair William & Co. IL87,395$723K0.0%-10.7%0.106% 5/8/2025 Federated Hermes Inc.31,500$261K0.0%N/A0.038% 5/7/2025 Essex Investment Management Co. LLC262,814$2.17M0.5%-0.8%0.318% 5/7/2025 Zurcher Kantonalbank Zurich Cantonalbank 21,032$174K0.0%+15.5%0.025% 5/7/2025 ARK Investment Management LLC120,751$999K0.0%-40.7%0.146% 5/7/2025 Phoenix Financial Ltd.2,585,985$21.39M0.3%+2.5%3.130% 5/6/2025 Cetera Investment Advisers40,161$332K0.0%N/A0.049% 5/6/2025 Y Intercept Hong Kong Ltd31,219$258K0.0%N/A0.038% 5/5/2025 Migdal Insurance & Financial Holdings Ltd.2,762,557$22.85M0.3%+61.3%3.344% 5/5/2025 Jennison Associates LLC1,892,110$15.65M0.0%+2.9%2.290% 5/2/2025 Bailard Inc.61,256$507K0.0%+34.8%0.074% 5/2/2025 Victory Capital Management Inc.493,370$4.08M0.0%+14.8%0.597% 4/30/2025 Fullcircle Wealth LLC14,140$117K0.0%N/A0.017% 4/29/2025 Ceera Investments LLC319,027$2.64M0.9%+22.8%0.386% 4/29/2025 Calamos Advisors LLC84,173$696K0.0%-50.8%0.102% 4/28/2025 P.A.W. Capital Corp300,000$2.48M6.1%-25.0%0.363% 4/28/2025 Teacher Retirement System of Texas18,362$152K0.0%+70.1%0.022% The Trump Dump is starting; Get out of stocks now? 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Inc.105,045$869K0.0%-5.5%0.127% 3/18/2025 California State Teachers Retirement System38,298$543K0.0%+36.2%0.046% 2/25/2025 Heck Capital Advisors LLC8,143$115K0.0%N/A0.010% 2/19/2025 Public Employees Retirement System of Ohio9,900$140K0.0%+25.3%0.012% 2/17/2025 Sphera Management Technology Funds Ltd164,145$2.33M1.3%N/A0.203% 2/17/2025 Squarepoint Ops LLC38,638$548K0.0%-67.9%0.048% 2/17/2025 Two Sigma Advisers LP43,600$618K0.0%+41.1%0.054% 2/17/2025 Two Sigma Investments LP255,372$3.62M0.0%+49.1%0.316% 2/17/2025 Tidal Investments LLC40,641$576K0.0%N/A0.050% 2/17/2025 State of Wyoming18,623$264K0.0%-20.5%0.023% 2/17/2025 Point72 Asset Management L.P.94,480$1.34M0.0%N/A0.117% 2/17/2025 Panoramic Capital LLC125,000$1.77M0.9%N/A0.154% 2/17/2025Nuveen Asset Management LLC428,926$6.08M0.0%+24.9%0.530% 2/17/2025 Numerai GP LLC38,668$548K0.2%-55.5%0.048% 2/17/2025 Millennium Management LLC108,328$1.54M0.0%-80.0%0.134% 2/17/2025 Lazard Asset Management LLC76,415$1.08M0.0%+23.0%0.094% 2/17/2025 D. E. Shaw & Co. Inc.292,584$4.15M0.0%+54.8%0.362% 2/17/2025 Corton Capital Inc.12,097$171K0.1%-59.2%0.015% 2/17/2025 Cresset Asset Management LLC46,328$656K0.0%-14.7%0.057% 2/17/2025 Cubist Systematic Strategies LLC102,966$1.46M0.0%+10.8%0.127% 2/17/2025 Centiva Capital LP22,841$324K0.0%-4.9%0.028% 2/17/2025 Bank of America Corp DE276,935$3.92M0.0%+145.0%0.342% 2/17/2025 BNP Paribas Financial Markets88,501$1.25M0.0%N/A0.109% 2/17/2025 Alyeska Investment Group L.P.375,000$5.31M0.0%+15.4%0.463% 2/17/2025 Alpha Family Trust1,135,559$16.09M9.0%-31.1%1.403% 2/14/2025 PDT Partners LLC37,680$534K0.0%N/A0.047% 2/14/2025 Schonfeld Strategic Advisors LLC1,590,391$22.54M0.1%N/A1.965% 2/14/2025 Northern Trust Corp66,277$939K0.0%+437.4%0.082% 2/14/2025 T. Rowe Price Investment Management Inc.674,822$9.56M0.0%N/A0.834% 2/14/2025 Freedom Investment Management Inc.13,512$191K0.0%N/A0.017% 2/13/2025 S Squared Technology LLC1,056,291$14.97M6.2%+2.8%1.305% 2/13/2025 Marshall Wace LLP358,736$5.08M0.0%+22.8%0.443% 2/13/2025 Jump Financial LLC67,300$954K0.0%+111.3%0.083% 2/13/2025 Portolan Capital Management LLC282,903$4.01M0.3%N/A0.350% 2/13/2025 Walleye Capital LLC478,417$6.78M0.0%+34.9%0.591% 2/13/2025 XTX Topco Ltd52,175$739K0.1%-3.3%0.064% 2/13/2025 Barclays PLC10,946$156K0.0%-29.0%0.014% 2/13/2025 Next Century Growth Investors LLC699,128$9.91M0.7%+146.7%0.864% 2/13/2025 Covestor Ltd2,280$32K0.0%-36.9%0.003% 2/13/2025 Phoenix Financial Ltd.2,522,007$35.74M0.5%-1.5%3.117% 2/13/2025 CenterBook Partners LP198,331$2.81M0.2%+292.0%0.245% 2/13/2025 Renaissance Technologies LLC380,873$5.40M0.0%+17.2%0.471% 2/13/2025 Legal & General Group Plc39,371$558K0.0%+21.7%0.049% 2/13/2025 Russell Investments Group Ltd.357,373$5.06M0.0%+66.6%0.442% 2/12/2025 ExodusPoint Capital Management LP68,218$967K0.0%+191.5%0.084% 2/12/2025 Trexquant Investment LP104,475$1.48M0.0%-29.6%0.129% 2/12/2025 Geode Capital Management LLC33,730$478K0.0%+236.6%0.042% 2/12/2025 Scalar Gauge Management LLC1,115,778$15.81M7.3%+29.2%1.379% 2/12/2025 Arrowstreet Capital Limited Partnership255,406$3.62M0.0%+111.1%0.316% 2/12/2025 Blair William & Co. 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Click here to see why Tesla's about to prove everyone wrong... again.2/12/2025 JPMorgan Chase & Co.187,644$2.66M0.0%+9.4%0.232% 2/11/2025 KLP Kapitalforvaltning AS8,100$115K0.0%N/A0.010% 2/11/2025 Sei Investments Co.68,171$966K0.0%N/A0.084% 2/11/2025 Quantbot Technologies LP29,652$420K0.0%+247.3%0.037% 2/11/2025 Teacher Retirement System of Texas10,796$153K0.0%N/A0.013% 2/10/2025 Natixis Advisors LLC18,017$255K0.0%N/A0.022% 2/10/2025 Telemark Asset Management LLC300,000$4.25M0.4%N/A0.371% 2/10/2025 ANTIPODES PARTNERS Ltd16,166$229K0.0%+52.2%0.020% 2/10/2025 Swiss National Bank80,974$1.15M0.0%+28.4%0.100% 2/10/2025 Connor Clark & Lunn Investment Management Ltd.677,465$9.60M0.0%+50.6%0.837% (Data available from 1/1/2016 forward) SMWB Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of SMWB shares? During the previous two years, 107 institutional investors and hedge funds held shares of Similarweb. The most heavily invested institutionals were Migdal Insurance & Financial Holdings Ltd. ($22.85M), Schonfeld Strategic Advisors LLC ($22.54M), Phoenix Financial Ltd. ($21.39M), Menora Mivtachim Holdings LTD. ($18.58M), Scalar Gauge Management LLC ($15.81M), Jennison Associates LLC ($15.65M), and Ulysses Management LLC ($14.98M).Learn more on SMWB's institutional investors. What percentage of Similarweb stock is owned by institutional investors? 57.59% of Similarweb stock is owned by institutional investors. Learn more on SMWB's institutional investor holdings. Which institutional investors have been buying Similarweb stock? Of the 93 institutional investors that purchased Similarweb stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Jennison Associates LLC ($1.89M), Y.D. More Investments Ltd ($1.60M), Schonfeld Strategic Advisors LLC ($1.59M), T. Rowe Price Investment Management Inc. ($1.41M), Migdal Insurance & Financial Holdings Ltd. ($1.05M), Scalar Gauge Management LLC ($960.00K), and Wellington Management Group LLP ($889.36K). How much institutional buying is happening at Similarweb? Institutional investors have bought a total of 20,829,955 shares in the last 24 months. This purchase volume represents approximately $219.35M in transactions. Which Similarweb major shareholders have been selling company stock? Of the 38 institutional investors that sold Similarweb stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Alpha Family Trust ($830.11K), Acadian Asset Management LLC ($703.58K), Millennium Management LLC ($433.95K), Migdal Insurance & Financial Holdings Ltd. ($394.98K), ARK Investment Management LLC ($348.77K), Premier Fund Managers Ltd ($221.34K), and Squarepoint Ops LLC ($126.83K). How much institutional selling is happening at Similarweb? Institutional investors have sold a total of 4,066,596 shares in the last 24 months. This volume of shares sold represents approximately $40.97M in transactions. Related Companies MGNI Major Shareholders APPN Major Shareholders WB Major Shareholders DV Major Shareholders CXM Major Shareholders AVDX Major Shareholders EVCM Major Shareholders CERT Major Shareholders MTTR Major Shareholders KARO Major Shareholders This page (NYSE:SMWB) was last updated on 6/12/2025 by MarketBeat.com Staff From Our PartnersTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredTrump wipes out trillions overnight…Is there anybody more powerful than Donald Trump right now? In a single tariff announcement, he wiped out n...Porter & Company | SponsoredElon’s NEXT Big IPO?Cancel your internet TODAY!? 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