Winchester Bancorp (WSBK) Institutional Ownership $9.60 +0.01 (+0.10%) As of 04:00 PM Eastern Add Compare Share Share Ownership Stock AnalysisChartCompetitorsInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Winchester Bancorp (NASDAQ:WSBK)Number ofInstitutional Buyers(last 12 months)6TotalInstitutional Inflows(last 12 months)$1.23MNumber ofInstitutional Sellers(last 12 months)0 Get WSBK Insider Trade Alerts Want to know when executives and insiders are buying or selling Winchester Bancorp stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. 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Skip Chart & View Institutional Buying and Selling Data WSBK Institutional Buying and Selling by Quarter Winchester Bancorp Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/15/2025 Bank of America Corp DE10,211$91K0.0%N/A0.110% 8/14/2025 Raymond James Financial Inc.20,000$179K0.0%N/A0.215% 8/13/2025 M3F Inc.59,323$531K0.1%N/A0.638% 8/8/2025 EagleClaw Capital Managment LLC16,000$143K0.0%N/A0.172% 8/8/2025 Geode Capital Management LLC20,992$188K0.0%N/A0.226% 7/30/2025 Benin Management CORP10,500$94K0.0%N/A0.113% (Data available from 1/1/2016 forward) WSBK Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of WSBK shares? During the previous two years, the following institutional investors and hedge funds held shares of Winchester Bancorp shares: M3F Inc. ($531K), Geode Capital Management LLC ($188K), Raymond James Financial Inc. ($179K), EagleClaw Capital Managment LLC ($143K), and Benin Management CORP ($94K), Bank of America Corp DE ($91K).Learn more on Winchester Bancorp's institutional investors. Which institutional investors have been buying Winchester Bancorp's stock? The following institutional investors have purchased Winchester Bancorp's stock in the last 24 months: M3F Inc. ($59.32K), Geode Capital Management LLC ($20.99K), Raymond James Financial Inc. ($20K), EagleClaw Capital Managment LLC ($16K), Benin Management CORP ($10.50K), and Bank of America Corp DE ($10.21K). How much institutional buying is happening at Winchester Bancorp? Institutional investors have bought a total of 137,026 shares in the last 24 months. This purchase volume represents approximately $1.23M in transactions. 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