American Shared Hospital Services (AMS) Institutional Ownership $3.01 +0.13 (+4.51%) As of 02/21/2025 04:10 PM Eastern Add Compare Share Share Ownership Stock AnalysisChartEarningsFinancialsHeadlinesOwnershipSEC FilingsShort Interest Institutional Ownership Changes (13F Filings) for American Shared Hospital Services (NYSEAMERICAN:AMS)CurrentInstitutional OwnershipPercentage23.16%Number ofInstitutional Buyers(last 12 months)3Number ofInstitutional Sellers(last 12 months)1 Get AMS Insider Trade Alerts Want to know when executives and insiders are buying or selling American Shared Hospital Services 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 AMS Institutional Buying and Selling by Quarter American Shared Hospital Services Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails2/13/2025 Renaissance Technologies LLC71,225$227K0.0%+5.6%1.109% 8/9/2024 Renaissance Technologies LLC55,501$177K0.0%+31.2%0.877% 8/9/2024 Dimensional Fund Advisors LP179,637$574K0.0%+4.9%2.838% 5/10/2024 Acadian Asset Management LLC86,399$254K0.0%-38.7%1.365% 5/7/2024 Empowered Funds LLC10,468$31K0.0%N/A0.165% 10/11/2023 Canton Hathaway LLC20,000$49K0.0%-33.3%0.321% 8/7/2023 Acadian Asset Management LLC140,864$358K0.0%-5.7%2.268% 4/11/2023 Canton Hathaway LLC30,000$84K0.0%+50.0%0.488% 1/19/2023 Canton Hathaway LLC20,000$59K0.0%+100.0%0.325% 10/17/2022 Canton Hathaway LLC10,000$26K0.0%N/A0.164% Get the Latest News and Ratings for AMS and Related StocksEnter your email address below to receive the latest news and analysts' ratings for American Shared Hospital Services and its competitors with MarketBeat's FREE daily newsletter. 8/2/2022 Financial Counselors Inc.37,123$82K0.0%N/A0.611% 11/16/2021 Squarepoint Ops LLC27,453$76K0.0%-13.9%0.468% 8/17/2021 Bridgeway Capital Management LLC220,800$647K0.0%+47.0%3.806% 8/16/2021 Squarepoint Ops LLC31,871$93K0.0%N/A0.549% 8/13/2021 Vanguard Group Inc.104,644$307K0.0%+126.6%1.804% 8/12/2021 Dimensional Fund Advisors LP220,839$647K0.0%-9.8%3.807% 8/11/2021 Susquehanna Fundamental Investments LLC10,600$31K0.0%N/A0.183% 7/31/2021 GWM Advisors LLC31,595$93K0.0%+46.3%0.545% 5/21/2021 Citadel Advisors LLC27,220$75K0.0%+164.3%0.469% 5/18/2021 Citadel Advisors LLC27,220$75K0.0%+164.3%0.469% 5/14/2021 Dimensional Fund Advisors LP244,723$678K0.0%+34.9%4.219% 5/11/2021 Acadian Asset Management LLC44,697$124K0.0%+28.9%0.771% 3/8/2021 Dimensional Fund Advisors LP181,429$403K0.0%-12.1%3.149% 2/25/2021 Dimensional Fund Advisors LP181,429$403K0.0%-12.1%3.149% 2/10/2021 Renaissance Technologies LLC48,300$107K0.0%N/A0.838% (Data available from 1/1/2016 forward) AMS Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of AMS shares? During the previous two years, the following institutional investors and hedge funds held shares of American Shared Hospital Services shares: Dimensional Fund Advisors LP ($574K), Acadian Asset Management LLC ($254K), Renaissance Technologies LLC ($227K), and Canton Hathaway LLC ($49K), Empowered Funds LLC ($31K).Learn more on AMS's institutional investors. What percentage of American Shared Hospital Services stock is owned by institutional investors? 23.16% of American Shared Hospital Services stock is owned by institutional investors. Learn more on AMS's institutional investor holdings. Which institutional investors have been buying American Shared Hospital Services stock? The following institutional investors have purchased American Shared Hospital Services stock in the last 24 months: Renaissance Technologies LLC ($16.98K), Empowered Funds LLC ($10.47K), Canton Hathaway LLC ($10K), and Dimensional Fund Advisors LP ($8.44K). How much institutional buying is happening at American Shared Hospital Services? Institutional investors have bought a total of 45,881 shares in the last 24 months. This purchase volume represents approximately $28.10K in transactions. Which American Shared Hospital Services major shareholders have been selling company stock? The following institutional investors have sold American Shared Hospital Services stock in the last 24 months: Acadian Asset Management LLC ($63.04K), and Canton Hathaway LLC ($10K). How much institutional selling is happening at American Shared Hospital Services? Institutional investors have sold a total of 73,040 shares in the last 24 months. This volume of shares sold represents approximately $21.91K in transactions. Related Companies Exagen Major Shareholders Oncology Institute Major Shareholders Burning Rock Biotech Major Shareholders Cryo-Cell International Major Shareholders Enzo Biochem Major Shareholders Concord Medical Services Major Shareholders NewGenIvf Group Major Shareholders Kindly MD Major Shareholders BioRestorative Therapies Major Shareholders Mangoceuticals Major Shareholders This page (NYSEAMERICAN:AMS) was last updated on 2/22/2025 by MarketBeat.com Staff From Our PartnersElon’s “New Gold”MIT scientists just developed a brand-new metal… A metal that’s shaping up to be, not only the biggest brea...True Market Insiders | SponsoredCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... But I just discovered a secret backdoor to collect a secret 69...Investors Alley | SponsoredThe Real Hillbilly ElegyThe mountains of Appalachia are incredible to behold. Spanning thousands of miles across Alabama, Kentucky...Porter & Company | SponsoredThis Crypto Is Set to Explode in FebruaryIt's a groundbreaking opportunity that could be poised for extraordinary gains. The catalyst behind this su...Crypto 101 Media | SponsoredBuy this AI Stock Before Elon’s AnnouncementWith Trump back in office, xAI is primed to become the leader in generative AI, leaving competitors in the dus...InvestorPlace | SponsoredElon Social Security shock?“A Maniacal Sense of Urgency” We could be just days away from Elon Musk launching his next big venture. One...Altimetry | SponsoredMajor AI announcement for 2025BIG NEWS: “Market Wizard” Larry Benedict Releases a Whole New Way to Trade AI StocksBrownstone Research | SponsoredHas Trump finally met his match?A new Chinese AI software called "DeepSeek" is sending shockwaves through the market. It's advanced enough ...Behind the Markets | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding American Shared Hospital Services Please log in to your account or sign up in order to add this asset to your watchlist. Share American Shared Hospital Services With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.