SELLAS Life Sciences Group (SLS) Institutional Ownership $1.54 -0.01 (-0.32%) As of 12:38 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for SELLAS Life Sciences Group (NASDAQ:SLS)CurrentInstitutional OwnershipPercentage17.38%Number ofInstitutional Buyers(last 12 months)14TotalInstitutional Inflows(last 12 months)$13.43MNumber ofInstitutional Sellers(last 12 months)2TotalInstitutional Outflows(last 12 months)$49.34K Get SLS Insider Trade Alerts Want to know when executives and insiders are buying or selling SELLAS Life Sciences Group stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Skip Chart & View Institutional Buying and Selling Data SLS Institutional Buying and Selling by Quarter SELLAS Life Sciences Group Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/12/2025JPMorgan Chase & Co.61,892$136K0.0%N/A0.062% 8/8/2025 Intech Investment Management LLC46,217$101K0.0%N/A0.046% 8/8/2025 Police & Firemen s Retirement System of New Jersey23,351$51K0.0%N/A0.023% 8/8/2025 Geode Capital Management LLC2,200,428$4.82M0.0%+168.2%2.205% 8/7/2025 ProShare Advisors LLC19,571$43K0.0%N/A0.020% 8/4/2025 Simon Quick Advisors LLC20,000$44K0.0%N/A0.020% 7/24/2025 Blair William & Co. IL16,002$35K0.0%N/A0.016% 5/14/2025Anson Funds Management LP7,579,095$8.19M1.3%+535.7%7.596% 5/12/2025Virtu Financial LLC53,861$58K0.0%+30.9%0.057% 2/28/2025 Brooklyn FI LLC594,919$677K0.1%N/A0.845% Get the Latest News and Ratings for SLS and Related StocksEnter your email address below to receive the latest news and analysts' ratings for SELLAS Life Sciences Group and its competitors with MarketBeat's FREE daily newsletter. 2/17/2025Anson Funds Management LP1,192,266$1.24M0.1%+50.2%1.694% 2/14/2025Northern Trust Corp134,721$140K0.0%+33.6%0.191% 2/13/2025XTX Topco Ltd53,426$56K0.0%-14.9%0.076% 2/12/2025 Geode Capital Management LLC733,546$763K0.0%+21.2%1.042% 2/11/2025Virtu Financial LLC41,155$43K0.0%-48.1%0.058% 2/11/2025 Brooklyn FI LLC594,919$677K0.0%N/A0.845% 1/31/2025 Opus Capital Group LLC238,500$248K0.0%+5.5%0.339% 11/20/2024Virtu Financial LLC79,241$99K0.0%+24.1%0.113% 11/16/2024 Geode Capital Management LLC605,191$757K0.0%+17.1%0.941% 11/15/2024Anson Funds Management LP793,835$992K0.0%N/A1.234% 11/15/2024XTX Topco Ltd62,785$78K0.0%N/A0.098% 11/15/2024State Street Corp174,529$218K0.0%+30.2%0.271% 8/9/2024Renaissance Technologies LLC32,446$39K0.0%N/A0.056% 5/20/2024Virtu Financial LLC39,429$40K0.0%-34.2%0.068% 5/14/2024Anson Funds Management LP4,832,368$4.88M0.3%N/A8.366% 4/26/2024 Opus Capital Group LLC200,600$203K0.0%+48.6%0.356% 2/13/2024Armistice Capital LLC820,000$869K0.0%N/A2.558% 1/31/2024 Opus Capital Group LLC135,000$143K0.0%+291.3%0.421% 9/12/2023 Prosperity Financial Group Inc.29,800$47K0.0%N/A0.105% 5/11/2023Highbridge Capital Management LLC1,805,054$2.58M0.0%N/A6.367% 1/18/2023 Opus Capital Group LLC19,672$46K0.0%N/A0.096% 11/15/2022Empery Asset Management LP308,466$623K3.7%-66.8%1.501% 2/14/2022 GSA Capital Partners LLP10,447$58K0.0%N/A0.066% 2/11/2022Equitable Holdings Inc.102,000$564K0.0%+2.0%0.642% 11/12/2021Jump Financial LLC14,627$134K0.0%N/A0.092% 11/12/2021Equitable Holdings Inc.100,000$916K0.0%+6.0%0.630% 11/12/2021 Geode Capital Management LLC133,801$1.23M0.0%+32.0%0.843% 8/25/2021Marshall Wace LLP84,544$938K0.0%+63.0%0.533% 8/17/2021Price T Rowe Associates Inc. MD15,500$172K0.0%-42.8%0.103% 8/16/2021Morgan Stanley15,499$172K0.0%+297.4%0.103% Washington Thinks They Own Your Bank Account (Ad)What If Washington Declared That: YOUR Money ISN'T Actually Yours? Sounds insane, but that's exactly what the Department of Justice just admitted in court—claiming cash isn't legally your property. What does that mean? It means Washington thinks they can seize, freeze, or drain your accounts—whenever they want.Get your free guide now by clicking here >>8/16/2021Pinz Capital Management LP10,700$119K0.0%-18.3%0.071% 8/16/2021State Street Corp37,468$416K0.0%N/A0.248% 8/16/2021Marshall Wace LLP84,544$938K0.0%+63.0%0.560% 8/13/2021Northern Trust Corp24,605$273K0.0%+35.9%0.163% 8/13/2021 Geode Capital Management LLC101,337$1.12M0.0%+6.8%0.672% 8/13/2021Vanguard Group Inc.618,534$6.87M0.0%+31.6%4.100% 8/12/2021Dimensional Fund Advisors LP20,320$226K0.0%+31.9%0.135% 8/12/2021 Bank of Montreal Can109,282$1.43M0.0%N/A0.724% 8/11/2021 Bank of New York Mellon Corp20,332$226K0.0%+30.3%0.135% (Data available from 1/1/2016 forward) SLS Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of SLS shares? During the previous two years, 16 institutional investors and hedge funds held shares of SELLAS Life Sciences Group. The most heavily invested institutionals were Anson Funds Management LP ($8.19M), Geode Capital Management LLC ($4.82M), Armistice Capital LLC ($869K), Brooklyn FI LLC ($677K), Opus Capital Group LLC ($248K), State Street Corp ($218K), and Northern Trust Corp ($140K).Learn more on SELLAS Life Sciences Group's institutional investors. What percentage of SELLAS Life Sciences Group's stock is owned by institutional investors? 17.38% of SELLAS Life Sciences Group's stock is owned by institutional investors. Learn more on SLS's institutional investor holdings. Which institutional investors have been buying SELLAS Life Sciences Group's stock? Of the 16 institutional investors that purchased SELLAS Life Sciences Group's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Anson Funds Management LP ($12.41M), Geode Capital Management LLC ($1.60M), Brooklyn FI LLC ($1.19M), Armistice Capital LLC ($820K), Opus Capital Group LLC ($178.50K), XTX Topco Ltd ($62.79K), and Intech Investment Management LLC ($46.22K). How much institutional buying is happening at SELLAS Life Sciences Group? Institutional investors have bought a total of 10,668,267 shares in the last 24 months. This purchase volume represents approximately $13.29M in transactions. Which of SELLAS Life Sciences Group's major shareholders have been selling company stock? The following institutional investors have sold SELLAS Life Sciences Group stock in the last 24 months: Virtu Financial LLC ($38.09K), and XTX Topco Ltd ($9.36K). How much institutional selling is happening at SELLAS Life Sciences Group? Institutional investors have sold a total of 47,445 shares in the last 24 months. This volume of shares sold represents approximately $49.34K in transactions. Related Companies Dianthus Therapeutics Major Shareholders KalVista Pharmaceuticals Major Shareholders Maze Therapeutics Major Shareholders ArriVent BioPharma Major Shareholders Mind Medicine (MindMed) Major Shareholders Arbutus Biopharma Major Shareholders Autolus Therapeutics Major Shareholders Gyre Therapeutics Major Shareholders MeiraGTx Major Shareholders Valneva Major Shareholders This page (NASDAQ:SLS) was last updated on 8/12/2025 by MarketBeat.com Staff From Our PartnersWhy Elon put $51 million into thisChris Rowe has made legendary calls—Tesla at $13, Nvidia at $40, Bitcoin under $1,000, Amazon at 12 cents. 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