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Cyclerion Therapeutics (CYCN) Institutional Ownership

Cyclerion Therapeutics logo
$3.79 -0.12 (-3.07%)
Closing price 08/14/2026 04:00 PM Eastern
Extended Trading
$3.88 +0.09 (+2.48%)
As of 08/14/2026 05:15 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 Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Cyclerion Therapeutics (NASDAQ:CYCN)

Current
Institutional Ownership
Percentage
75.62%
Number of
Institutional Buyers
(last 12 months)
3
Total
Institutional Inflows
(last 12 months)
$1.10M
Number of
Institutional Sellers
(last 12 months)
0
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CYCN Institutional Buying and Selling by Quarter

Cyclerion Therapeutics Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/14/2026ADAR1 Capital Management LLC298,757$1.01M0.0%N/A6.384%
8/7/2026 BlackRock Inc.16,797$57K0.0%N/A0.359%
11/14/2025Two Sigma Investments LP13,293$31K0.0%N/A0.398%
8/15/2025Tyndall Capital Partners L P155,187$452K100.0%-5.8%4.646%
2/13/2025Renaissance 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%


CYCN Institutional Ownership - Frequently Asked Questions

During the previous two years, the following institutional investors and hedge funds held shares of Cyclerion Therapeutics shares: ADAR1 Capital Management LLC ($1.01M), Tyndall Capital Partners L P ($452K), BlackRock Inc. ($57K), and Renaissance Technologies LLC ($34K), Two Sigma Investments LP ($31K).Learn more on Cyclerion Therapeutics' institutional investors.

75.62% of Cyclerion Therapeutics' stock is owned by institutional investors. Learn more on CYCN's institutional investor holdings.

The following institutional investors have purchased Cyclerion Therapeutics' stock in the last 24 months: ADAR1 Capital Management LLC ($298.76K), BlackRock Inc. ($16.80K), Two Sigma Investments LP ($13.29K), and Renaissance Technologies LLC ($10.61K).

Institutional investors have bought a total of 328,847 shares in the last 24 months. This purchase volume represents approximately $1.10M in transactions.


Related Companies

Institutional ownership data for NASDAQ:CYCN is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/14/2026. New 13F filings are added each quarter as they're published.
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