IO Biotech (IOBT) Institutional Ownership $1.20 +0.09 (+8.11%) Closing price 04:00 PM EasternExtended Trading$1.18 -0.01 (-1.25%) As of 07:15 PM 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 ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for IO Biotech (NASDAQ:IOBT)CurrentInstitutional OwnershipPercentage54.76%Number ofInstitutional Buyers(last 12 months)7TotalInstitutional Inflows(last 12 months)$1.50MNumber ofInstitutional Sellers(last 12 months)6TotalInstitutional Outflows(last 12 months)$2.28M Get IOBT Insider Trade Alerts Want to know when executives and insiders are buying or selling IO Biotech stock? 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Email Address Skip Chart & View Institutional Buying and Selling Data IOBT Institutional Buying and Selling by Quarter IO Biotech Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/21/2025Acadian Asset Management LLC30,858$33K0.0%-49.1%0.047% 5/19/2025 Jane Street Group LLC23,717$26K0.0%N/A0.036% 5/15/2025 Landscape Capital Management L.L.C.400,234$436K0.0%-9.5%0.608% 5/8/2025 XTX Topco Ltd50,486$55K0.0%+80.0%0.077% 5/7/2025 Dauntless Investment Group LLC681,446$743K0.9%-8.9%1.034% 2/17/2025 Bridgeway Capital Management LLC174,000$160K0.0%-12.8%0.264% 2/17/2025 Citadel Advisors LLC270,504$249K0.0%N/A0.411% 2/14/2025 Dauntless Investment Group LLC747,646$688K0.7%N/A1.135% 2/13/2025 XTX Topco Ltd28,040$26K0.0%N/A0.043% 2/13/2025 Renaissance Technologies LLC118,800$109K0.0%+22.5%0.180% Get the Latest News and Ratings for IOBT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for IO Biotech and its competitors with MarketBeat's FREE daily newsletter. 2/12/2025 Landscape Capital Management L.L.C.442,196$407K0.0%N/A0.671% 1/30/2025 Vontobel Holding Ltd.32,667$30K0.0%N/A0.050% 10/24/2024 Novo Holdings A S3,354,449$3.52M0.2%-24.3%5.092% 8/20/2024 Novo Holdings A S4,429,449$5.18M0.3%-12.9%6.723% 8/15/2024 Armistice Capital LLC1,545,000$1.81M0.0%-10.4%2.345% 8/12/2024 XTX Topco Ltd26,555$31K0.0%+67.4%0.040% 8/9/2024 Renaissance Technologies LLC180,800$212K0.0%+8.1%0.274% 2/15/2024 PFM Health Sciences LP2,341,107$4.40M0.3%+73.0%3.554% 2/13/2024 Stonepine Capital Management LLC1,666,037$3.13M1.4%-15.7%2.529% 2/13/2024 Armistice Capital LLC1,924,000$3.62M0.0%-10.4%2.920% 11/15/2023 Armistice Capital LLC2,148,000$3.03M0.0%N/A3.260% 11/14/2023 Stonepine Capital Management LLC1,975,308$2.79M0.9%N/A2.998% 11/14/2023 Pivotal bioVenture Partners Investment Advisor LLC864,197$1.22M0.5%N/A1.312% 11/8/2023 Vivo Capital LLC6,173,439$8.71M1.1%+104.7%9.371% 7/25/2023 Summit Trail Advisors LLC43,744$86K0.0%N/A0.152% 2/14/2023 RA Capital Management L.P.1,127,260$2.59M0.1%-39.3%3.911% 11/14/2022Psagot Value Holdings Ltd. Israel40,846$111K0.0%N/A0.142% 11/2/2022 Victory Capital Management Inc.43,741$119K0.0%N/A0.152% 2/15/2022 Samsara BioCapital LLC1,120,437$7.17M1.4%N/A3.888% 2/15/2022 Capital World Investors1,235,000$8.11M0.0%N/A4.286% 2/14/2022 Soleus Capital Management L.P.672,734$4.31M0.4%N/A2.335% 2/14/2022 Novo Holdings A S3,277,932$20.98M1.0%N/A11.376% (Data available from 1/1/2016 forward) IOBT Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of IOBT shares? During the previous two years, 16 institutional investors and hedge funds held shares of IO Biotech. The most heavily invested institutionals were Vivo Capital LLC ($8.71M), PFM Health Sciences LP ($4.40M), Novo Holdings A S ($3.52M), Stonepine Capital Management LLC ($3.13M), Armistice Capital LLC ($1.81M), Pivotal bioVenture Partners Investment Advisor LLC ($1.22M), and Dauntless Investment Group LLC ($743K).Learn more on IOBT's institutional investors. What percentage of IO Biotech stock is owned by institutional investors? 54.76% of IO Biotech stock is owned by institutional investors. Learn more on IOBT's institutional investor holdings. Which institutional investors have been buying IO Biotech stock? Of the 13 institutional investors that purchased IO Biotech stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Vivo Capital LLC ($3.16M), Armistice Capital LLC ($2.15M), Stonepine Capital Management LLC ($1.98M), PFM Health Sciences LP ($987.65K), Pivotal bioVenture Partners Investment Advisor LLC ($864.20K), Dauntless Investment Group LLC ($747.65K), and Landscape Capital Management L.L.C. ($442.20K). How much institutional buying is happening at IO Biotech? Institutional investors have bought a total of 10,790,101 shares in the last 24 months. This purchase volume represents approximately $14.93M in transactions. Which IO Biotech major shareholders have been selling company stock? The following institutional investors have sold IO Biotech stock in the last 24 months: Novo Holdings A S ($1.73M), Armistice Capital LLC ($403K), Stonepine Capital Management LLC ($309.27K), Dauntless Investment Group LLC ($66.20K), Landscape Capital Management L.L.C. ($41.96K), Acadian Asset Management LLC ($29.79K), and Bridgeway Capital Management LLC ($25.62K). How much institutional selling is happening at IO Biotech? Institutional investors have sold a total of 2,609,657 shares in the last 24 months. This volume of shares sold represents approximately $3.29M in transactions. 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