Quantum Biopharma (QNTM) Institutional Ownership $23.25 -1.08 (-4.44%) Closing price 08/13/2025 04:00 PM EasternExtended Trading$23.71 +0.46 (+1.98%) As of 07:34 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesOwnershipSEC FilingsTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Quantum Biopharma (NASDAQ:QNTM)CurrentInstitutional OwnershipPercentage1.24%Number ofInstitutional Buyers(last 12 months)3TotalInstitutional Inflows(last 12 months)$266.16KNumber ofInstitutional Sellers(last 12 months)1TotalInstitutional Outflows(last 12 months)$243K Get QNTM Insider Trade Alerts Want to know when executives and insiders are buying or selling Quantum Biopharma 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 QNTM Institutional Buying and Selling by Quarter Quantum Biopharma Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/12/2025 Steward Partners Investment Advisory LLC3,100$63K0.0%N/A0.107% 8/4/2025 AdvisorShares Investments LLC36,990$749K0.1%-24.5%1.271% 2/14/2025 AdvisorShares Investments LLC69,078$254K0.0%+163.3%3.598% 11/20/2024 Virtu Financial LLC11,428$46K0.0%N/A0.596% (Data available from 1/1/2016 forward) QNTM Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of QNTM shares? During the previous two years, the following institutional investors and hedge funds held shares of Quantum Biopharma shares: AdvisorShares Investments LLC ($749K), and Steward Partners Investment Advisory LLC ($63K), Virtu Financial LLC ($46K).Learn more on Quantum Biopharma's institutional investors. What percentage of Quantum Biopharma's stock is owned by institutional investors? 1.24% of Quantum Biopharma's stock is owned by institutional investors. Learn more on QNTM's institutional investor holdings. Which institutional investors have been buying Quantum Biopharma's stock? The following institutional investors have purchased Quantum Biopharma's stock in the last 24 months: AdvisorShares Investments LLC ($42.85K), Virtu Financial LLC ($11.43K), and Steward Partners Investment Advisory LLC ($3.10K). How much institutional buying is happening at Quantum Biopharma? Institutional investors have bought a total of 57,373 shares in the last 24 months. This purchase volume represents approximately $266.16K in transactions. Which of Quantum Biopharma's major shareholders have been selling company stock? The following institutional investors have sold Quantum Biopharma stock in the last 24 months: AdvisorShares Investments LLC ($12K). How much institutional selling is happening at Quantum Biopharma? Institutional investors have sold a total of 12,000 shares in the last 24 months. This volume of shares sold represents approximately $243K in transactions. 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