Cyclerion Therapeutics (CYCN) Institutional Ownership $2.75 +0.07 (+2.61%) Closing price 04/17/2025 04:00 PM EasternExtended Trading$2.60 -0.15 (-5.27%) As of 04/17/2025 06:11 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 AnalysisChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Cyclerion Therapeutics (NASDAQ:CYCN)CurrentInstitutional OwnershipPercentage75.62%Number ofInstitutional Buyers(last 12 months)1TotalInstitutional Inflows(last 12 months)$34.17KNumber ofInstitutional Sellers(last 12 months)0 Get CYCN Insider Trade Alerts Want to know when executives and insiders are buying or selling Cyclerion Therapeutics stock? 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Email Address Skip Chart & View Institutional Buying and Selling Data CYCN Institutional Buying and Selling by Quarter Cyclerion Therapeutics Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails2/13/2025Renaissance Technologies LLC10,611$34K0.0%N/A0.392% 2/14/2024Tyndall Capital Partners L P164,429$551K100.0%+11.3%6.711% 11/14/2023Tyndall Capital Partners L P147,712$505K100.0%N/A6.129% 8/11/2023Artal Group S.A.138,955$572K0.0%-95.0%5.766% 5/9/2022Trustcore Financial Services LLC292,645$325K0.0%+47.7%0.674% 2/14/2022Diametric Capital LP100,480$173K0.1%+43.9%0.232% 2/10/2022Acadian Asset Management LLC249,792$428K0.0%N/A0.577% 11/16/2021Two Sigma Advisers LP647,700$1.99M0.0%+98.4%1.495% 11/16/2021Two Sigma Investments LP390,596$1.20M0.0%+154.1%0.902% 11/15/2021Pura Vida Investments LLC422,311$1.30M0.0%-16.8%0.975% Get the Latest News and Ratings for CYCN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Cyclerion Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 11/15/2021Eversept Partners LP371,955$1.14M0.1%N/A0.859% 11/15/2021Franklin Resources Inc.116,035$356K0.0%N/A0.268% 11/12/2021Jump Financial LLC52,000$160K0.0%N/A0.120% 11/12/2021Geode Capital Management LLC490,660$1.51M0.0%+27.5%1.134% 9/17/2021Virtu Financial LLC80,384$313K0.0%-9.2%0.186% 9/3/2021Parametric Portfolio Associates LLC12,596$49K0.0%-52.0%0.029% 8/25/2021Marshall Wace LLP28,863$113K0.0%N/A0.067% 8/18/2021Ikarian Capital LLC509,924$1.99M0.2%+70.0%1.178% 8/17/2021Millennium Management LLC389,041$1.52M0.0%N/A0.899% 8/17/2021Boothbay Fund Management LLC66,977$261K0.0%+96.3%0.155% 8/16/2021Cubist Systematic Strategies LLC17,084$67K0.0%N/A0.039% 8/16/2021Diametric Capital LP80,336$313K0.2%N/A0.186% 8/16/2021Slate Path Capital LP7,157,601$27.92M1.6%+15.5%16.539% 8/16/2021Charles Schwab Investment Management Inc.129,628$506K0.0%-35.1%0.300% 8/16/2021State Street Corp83,321$325K0.0%-79.2%0.193% 8/16/2021Tibra Equities Europe Ltd85,000$332K0.1%N/A0.196% 8/16/2021Goldman Sachs Group Inc.36,317$141K0.0%-9.4%0.084% 8/16/2021Marshall Wace LLP28,863$113K0.0%N/A0.067% 8/13/2021Renaissance Technologies LLC284,744$1.11M0.0%+22.1%0.658% 8/13/2021Northern Trust Corp64,616$252K0.0%-73.0%0.149% 8/13/2021Geode Capital Management LLC384,820$1.50M0.0%-21.0%0.889% 8/13/2021Vanguard Group Inc.1,423,532$5.55M0.0%-14.7%3.289% 8/13/2021FMR LLC2,674,811$10.43M0.0%-1.9%6.181% 8/12/2021Prime Capital Investment Advisors LLC22,250$87K0.0%N/A0.051% 8/12/2021XTX Topco Ltd17,968$70K0.0%+34.4%0.042% 8/12/2021Dimensional Fund Advisors LP158,994$620K0.0%+160.1%0.367% 8/12/2021JPMorgan Chase & Co.59,786$233K0.0%-43.7%0.138% 8/12/2021Ergoteles LLC96,100$375K0.0%N/A0.222% 8/11/2021Bank of New York Mellon Corp66,792$260K0.0%-31.9%0.154% 8/11/2021Deutsche Bank AG65,900$257K0.0%-18.7%0.152% BREAKING: Trump Bans NVIDIA Chips to China (Ad)On April 16th, 2025, President Trump banned Nvidia from selling its most advanced semiconductors to China. That brings the U.S. and China closer to war than at any time since the Korean War ended in 1953.There's a good chance you own at least one of these through a brokerage account, mutual fund, 401K, 8/11/2021Susquehanna Fundamental Investments LLC105,572$412K0.0%N/A0.244% 5/19/2021Virtu Financial LLC88,551$247K0.0%N/A0.259% 5/18/2021D. E. Shaw & Co. Inc.68,472$191K0.0%-62.2%0.201% 5/17/2021PDT Partners LLC42,900$120K0.0%+74.4%0.126% 5/17/2021Walleye Trading LLC10,000$28K0.0%N/A0.029% 5/17/2021Walleye Capital LLC15,000$42K0.0%N/A0.044% 5/17/2021Ikarian Capital LLC300,000$836K0.0%N/A0.879% 5/14/2021XTX Topco Ltd13,365$37K0.0%N/A0.039% 5/13/2021QS Investors LLC116,035$324K0.0%+13.1%0.340% 5/13/2021Barclays PLC18,516$52K0.0%+159.0%0.054% 5/13/2021Renaissance Technologies LLC233,200$651K0.0%+1,202.8%0.683% 5/12/2021Northern Trust Corp239,015$667K0.0%-7.0%0.700% 5/12/2021Geode Capital Management LLC486,959$1.36M0.0%+12.2%1.427% 5/12/2021JPMorgan Chase & Co.106,102$296K0.0%+19.1%0.311% 5/11/2021New York State Common Retirement Fund12,070$34K0.0%-91.0%0.035% 5/10/2021Russell Investments Group Ltd.124,075$345K0.0%+400.2%0.363% 5/10/2021Bank Julius Baer & Co. Ltd Zurich12,000$33K0.0%-33.2%0.035% 5/7/2021BlackRock Inc.1,685,485$4.70M0.0%+5.1%4.938% 4/28/2021DAVENPORT & Co LLC84,500$236K0.0%+369.0%0.248% 3/8/2021Dimensional Fund Advisors LP63,735$195K0.0%+8.7%0.187% 3/1/2021UBS Asset Management Americas Inc.10,149$31K0.0%-58.8%0.030% 2/25/2021Dimensional Fund Advisors LP63,735$195K0.0%+8.7%0.188% 2/19/2021JPMorgan Chase & Co.89,079$273K0.0%+84.8%0.262% 2/16/2021Charles Schwab Investment Management Inc.177,091$542K0.0%-6.5%0.521% 2/11/2021Northern Trust Corp257,044$787K0.0%-3.4%0.757% 2/9/2021Wells Fargo & Company MN50,522$154K0.0%+77.9%0.149% (Data available from 1/1/2016 forward) CYCN Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of CYCN shares? During the previous two years, the following institutional investors and hedge funds held shares of Cyclerion Therapeutics shares: Artal Group S.A. ($572K), and Tyndall Capital Partners L P ($551K), Renaissance Technologies LLC ($34K).Learn more on CYCN's institutional investors. What percentage of Cyclerion Therapeutics stock is owned by institutional investors? 75.62% of Cyclerion Therapeutics stock is owned by institutional investors. Learn more on CYCN's institutional investor holdings. Which institutional investors have been buying Cyclerion Therapeutics stock? The following institutional investors have purchased Cyclerion Therapeutics stock in the last 24 months: Tyndall Capital Partners L P ($164.43K), and Renaissance Technologies LLC ($10.61K). How much institutional buying is happening at Cyclerion Therapeutics? Institutional investors have bought a total of 175,040 shares in the last 24 months. This purchase volume represents approximately $595.34K in transactions. Which Cyclerion Therapeutics major shareholders have been selling company stock? The following institutional investors have sold Cyclerion Therapeutics stock in the last 24 months: Artal Group S.A. ($2.64M). How much institutional selling is happening at Cyclerion Therapeutics? Institutional investors have sold a total of 2,640,167 shares in the last 24 months. This volume of shares sold represents approximately $10.85M in transactions. 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