Arrowhead Pharmaceuticals (ARWR) Institutional Ownership $75.54 -1.60 (-2.07%) Closing price 05/21/2026 04:00 PM EasternExtended Trading$74.78 -0.77 (-1.01%) As of 05:47 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 Massive. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Arrowhead Pharmaceuticals (NASDAQ:ARWR)CurrentInstitutional OwnershipPercentage62.61%Number ofInstitutional Buyers(last 12 months)278TotalInstitutional Inflows(last 12 months)$1.52BNumber ofInstitutional Sellers(last 12 months)125TotalInstitutional Outflows(last 12 months)$814.60M Get ARWR Insider Trade Alerts Want to know when executives and insiders are buying or selling Arrowhead Pharmaceuticals stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. 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Skip Chart & View Institutional Buying and Selling Data ARWR Institutional Buying and Selling by Quarter Arrowhead Pharmaceuticals Major Shareholders & Ownership History ExportReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/19/2026 Edgestream Partners L.P.91,997$5.77M0.2%+152.2%0.065% 5/19/2026 Janus Henderson Group PLC1,436,990$90.12M0.0%+12.2%1.020% 5/19/2026 Centaurus Financial Inc.1,738$109K0.0%N/A0.001% 5/18/2026 California State Teachers Retirement System144,313$9.05M0.0%+21.9%0.102% 5/18/2026 Royal Bank of Canada61,316$3.84M0.0%+19.8%0.044% 5/18/2026 Empowered Funds LLC137,220$8.60M0.1%+661.6%0.097% 5/18/2026 Exome Asset Management LLC45,721$2.87M1.5%-8.1%0.032% 5/16/2026 The Manufacturers Life Insurance Company 160,422$10.06M0.0%+63.4%0.114% 5/16/2026 Quantinno Capital Management LP12,790$802K0.0%+6.5%0.009% 5/15/2026 Affinity Asset Advisors LLC200,000$12.54M0.6%+185.7%0.142% Get the Latest News and Ratings for ARWR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Arrowhead Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 5/15/2026 Entropy Technologies LP10,620$666K0.0%-60.9%0.008% 5/14/2026 Renaissance Technologies LLC1,036,495$64.99M0.1%N/A0.736% 5/14/2026 Arrowstreet Capital Limited Partnership587,125$36.81M0.0%-71.9%0.417% 5/14/2026 Siren L.L.C.1,615,476$101.29M2.8%+7.7%1.147% 5/14/2026 Inceptionr LLC6,791$426K0.1%N/A0.005% 5/14/2026 Bank of Nova Scotia135,960$8.53M0.0%N/A0.097% 5/14/2026 State of Wyoming4,209$264K0.0%-58.4%0.003% 5/13/2026 Cetera Investment Advisers9,424$591K0.0%+40.7%0.007% 5/13/2026 First Trust Advisors LP149,148$9.35M0.0%-37.3%0.106% 5/8/2026 PNC Financial Services Group Inc.7,312$458K0.0%-34.1%0.005% 5/7/2026 WCM Investment Management LLC171,575$9.89M0.0%+23.5%0.123% 5/7/2026 Dimensional Fund Advisors LP608,531$38.15M0.0%+312.8%0.435% 5/7/2026 Parallel Advisors LLC1,004$63K0.0%+407.1%0.001% 5/7/2026 KBC Group NV3,773$237K0.0%-20.6%0.003% 5/7/2026 SEB Asset Management AB158,205$9.92M0.0%N/A0.113% 5/7/2026 Swiss National Bank242,000$15.17M0.0%-1.4%0.173% 5/6/2026 California Public Employees Retirement System257,133$16.12M0.0%N/A0.184% 5/6/2026 Assetmark Inc.2,470$155K0.0%+896.0%0.002% 5/6/2026 Bessemer Group Inc.79,140$4.96M0.0%+52.8%0.057% 5/6/2026 Allspring Global Investments Holdings LLC55,179$3.47M0.0%+658.3%0.039% 5/6/2026 Independent Financial Group LLC14,125$886K0.0%N/A0.010% 5/5/2026 Beaumont Financial Advisors LLC10,240$642K0.0%-1.4%0.007% 5/5/2026 Bank of New York Mellon Corp960,144$60.20M0.0%+8.1%0.686% 5/5/2026 Three Seasons Wealth LLC9,315$584K0.2%N/A0.007% 5/4/2026 State of Michigan Retirement System33,700$2.11M0.0%N/A0.024% 5/4/2026 Principal Financial Group Inc.490,122$30.73M0.0%-31.5%0.350% 5/4/2026 Teachers Retirement System of The State of Kentucky43,261$2.71M0.0%+24.4%0.031% 5/2/2026 International Assets Investment Management LLC3,413$215K0.0%N/A0.002% 5/1/2026 Commonwealth of Pennsylvania Public School Empls Retrmt SYS35,086$2.20M0.0%+2.5%0.025% 5/1/2026 Fifth Third Bancorp33,447$2.10M0.0%+2,648.3%0.024% SpaceX will mint billionaires. You won't be one of them. (Ad)By the time a company goes public, 95% of profits have already been made. Insiders bought SpaceX at $20 billion - you'd be buying at $1.75 trillion. But one small, publicly traded company sits directly in SpaceX's path, still priced like Wall Street hasn't noticed. It powers the infrastructure Musk's operation can't run without. Dylan Jovine is naming the ticker free - before the June S-1 closes the window.Get the ticker now before the June S-1 closes the window4/30/2026 Hsbc Holdings PLC151,046$9.45M0.0%N/A0.108% 4/30/2026 First Horizon Corp654$41K0.0%+36.3%0.000% 4/30/2026 Capstone Capital Management Ltd15,740$987K1.0%N/A0.011% 4/30/2026 Oregon Public Employees Retirement Fund28,700$1.80M0.0%-9.2%0.020% 4/28/2026 Abel Hall LLC7,910$496K0.1%-10.3%0.006% 4/28/2026 QRG Capital Management Inc.4,493$282K0.0%-22.0%0.003% 4/27/2026 World Investment Advisors3,716$233K0.0%-66.2%0.003% 4/27/2026 New York State Teachers Retirement System124,853$7.83M0.0%-16.6%0.089% 4/27/2026 Sierra Summit Advisors LLC14,353$900K0.1%N/A0.010% 4/27/2026 Private Advisor Group LLC15,426$967K0.0%+43.3%0.011% 4/27/2026 Elevation Point Wealth Partners LLC11,977$751K0.0%N/A0.009% 4/27/2026 Fideuram Intesa Sanpaolo Private Banking S.P.A.44,045$2.76M0.1%+14.0%0.031% 4/25/2026 Strs Ohio32,500$2.04M0.0%+3.2%0.023% 4/23/2026 Inspire Investing LLC1,709$107K0.0%N/A0.001% 4/22/2026 DDFG Inc10,728$673K0.1%-27.2%0.008% 4/22/2026 Janney Montgomery Scott LLC4,296$269K0.0%N/A0.003% 4/22/2026 Pictet Asset Management Holding SA1,273,266$79.61M0.1%+23.8%0.909% 4/21/2026 Louisiana State Employees Retirement System40,600$2.55M0.0%N/A0.029% 4/20/2026 OP Asset Management Ltd10,842$680K0.0%N/A0.008% 4/20/2026 Assenagon Asset Management S.A.58,735$3.68M0.0%-91.4%0.042% 4/16/2026 Diversified Trust Co34,553$2.17M0.0%N/A0.025% 3/17/2026 Rockefeller Capital Management L.P.557$37K0.0%-37.4%0.000% 3/13/2026 World Investment Advisors10,987$729K0.0%-20.3%0.008% 3/9/2026 Corient Private Wealth LLC18,226$1.21M0.0%+3.1%0.013% 3/3/2026 Bank of Hawaii19,218$1.28M0.1%N/A0.014% 2/19/2026 Invesco Ltd.547,758$36.37M0.0%+8.9%0.391% 2/19/2026 Corient Private Wealth LLC18,226$1.21M0.0%+3.1%0.013% 2/18/2026 Mercer Global Advisors Inc. ADV5,300$352K0.0%N/A0.004% 2/18/2026 Summit Global Investments14,287$949K0.1%+43.8%0.010% 2/18/2026 State of Tennessee Department of Treasury55,642$3.86M0.0%+2.0%0.040% 2/18/2026 EP Wealth Advisors LLC38,683$2.57M0.0%N/A0.028% 2/18/2026 Mackenzie Financial Corp11,445$768K0.0%+12.5%0.008% 2/18/2026 Empowered Funds LLC18,018$1.20M0.0%+4.5%0.013% 2/18/2026 Voloridge Investment Management LLC288,511$19.15M0.1%-28.3%0.206% 2/18/2026 VestGen Advisors LLC12,312$817K0.0%N/A0.009% 2/18/2026 Vestal Point Capital LP900,000$59.75M2.0%N/A0.643% 2/18/2026 Virtus Investment Advisers LLC9,749$647K0.2%+39.0%0.007% 2/18/2026 Wellington Management Group LLP47,473$3.15M0.0%-4.0%0.034% 2/18/2026 RTW Investments LP584,716$38.82M0.4%N/A0.418% 2/18/2026 Oxford Asset Management LLP16,026$1.06M0.4%+11.3%0.011% 2/18/2026 Millennium Management LLC45,018$2.99M0.0%-59.0%0.032% 2/18/2026 Man Group plc11,552$767K0.0%N/A0.008% 2/18/2026 Janus Henderson Group PLC1,280,446$85.00M0.0%+31.5%0.914% 2/18/2026 Gotham Asset Management LLC56,273$3.74M0.0%+76.6%0.040% 2/18/2026 Engineers Gate Manager LP19,772$1.31M0.0%N/A0.014% 2/18/2026 Cinctive Capital Management LP16,110$1.07M0.1%N/A0.012% 2/18/2026 Balyasny Asset Management L.P.376,216$24.98M0.0%-52.6%0.269% 2/18/2026 Baker BROS. Advisors LP2,175,645$144.44M0.8%+30.2%1.554% 2/18/2026 Boothbay Fund Management LLC40,504$2.69M0.0%-51.4%0.029% 2/18/2026 ACT Capital Management LLC75,000$4.98M4.0%N/A0.054% SpaceX will mint billionaires. You won't be one of them. (Ad)By the time a company goes public, 95% of profits have already been made. Insiders bought SpaceX at $20 billion - you'd be buying at $1.75 trillion. But one small, publicly traded company sits directly in SpaceX's path, still priced like Wall Street hasn't noticed. It powers the infrastructure Musk's operation can't run without. Dylan Jovine is naming the ticker free - before the June S-1 closes the window.Get the ticker now before the June S-1 closes the window2/17/2026 Guggenheim Capital LLC56,644$3.76M0.0%+40.3%0.040% 2/17/2026 ADAR1 Capital Management LLC58,200$3.86M0.3%+16.9%0.042% 2/17/2026 Schonfeld Strategic Advisors LLC20,105$1.34M0.0%-96.3%0.014% 2/17/2026 PDT Partners LLC70,048$4.65M0.3%-22.9%0.050% 2/17/2026 AQR Capital Management LLC147,353$9.78M0.0%+3.2%0.105% 2/17/2026 Abel Hall LLC8,819$585K0.1%N/A0.006% 2/17/2026 Cetera Investment Advisers6,697$445K0.0%N/A0.005% 2/17/2026 Trexquant Investment LP250,944$16.66M0.1%N/A0.179% 2/17/2026 Amundi26,390$1.75M0.0%-6.3%0.019% 2/17/2026 Price T Rowe Associates Inc. MD838,818$55.69M0.0%+660.9%0.599% ARWR Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of ARWR shares? During the previous two years, 378 institutional investors and hedge funds held shares of Arrowhead Pharmaceuticals. The most heavily invested institutionals were Vanguard Group Inc. ($1.02B), Avoro Capital Advisors LLC ($705.39M), State Street Corp ($425.15M), Geode Capital Management LLC ($216.80M), Baker BROS. Advisors LP ($144.44M), Fred Alger Management LLC ($121.69M), and Norges Bank ($113.16M).Learn more on Arrowhead Pharmaceuticals' institutional investors. What percentage of Arrowhead Pharmaceuticals' stock is owned by institutional investors? 62.61% of Arrowhead Pharmaceuticals' stock is owned by institutional investors. Learn more on ARWR's institutional investor holdings. Which institutional investors have been buying Arrowhead Pharmaceuticals' stock? Of the 339 institutional investors that purchased Arrowhead Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Norges Bank ($5.68M), Avoro Capital Advisors LLC ($2.86M), UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($2.77M), Marshall Wace LLP ($2.18M), Arrowstreet Capital Limited Partnership ($2.09M), Fred Alger Management LLC ($1.83M), and Vanguard Group Inc. ($1.53M). How much institutional buying is happening at Arrowhead Pharmaceuticals? Institutional investors have bought a total of 32,923,939 shares in the last 24 months. This purchase volume represents approximately $1.52B in transactions. Which of Arrowhead Pharmaceuticals' major shareholders have been selling company stock? Of the 125 institutional investors that sold Arrowhead Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Marshall Wace LLP ($2.03M), Arrowstreet Capital Limited Partnership ($1.50M), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($1.42M), Siren L.L.C. ($1.17M), Aberdeen Group plc ($786.68K), Vanguard Group Inc. ($742.75K), and UBS Group AG ($682.41K). How much institutional selling is happening at Arrowhead Pharmaceuticals? Institutional investors have sold a total of 15,725,940 shares in the last 24 months. This volume of shares sold represents approximately $814.60M in transactions. 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