CYCN Institutional Ownership & Shareholders
CYCLERION THERAPEUTICS INC (CYCN) is currently held by 20 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $11.18M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Kalehua Capital Management Llc is currently the largest disclosed institutional shareholder of CYCN tracked by InsiderSet, reporting ownership valued at approximately $5.60M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $38.84M, representing an estimated gain of +593.81% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 99% of the total disclosed CYCN value among the investors covered in this analysis. Major shareholders include Kalehua Capital Management Llc, Fmr Llc, Balyasny Asset Management L.P., and several other long-term asset managers with concentrated positions in CYCLERION THERAPEUTICS INC (CYCN).
This page ranks the largest institutional CYCN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
20
Total Reported Value
$11.18M
Largest Holder
Kalehua Capital Management Llc
Largest Position
$5.60M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
32
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Kalehua Capital Management Llc | 3.22% | 1,651,350 | $5,598,077 | $38,839,752 | +$33,241,675 | +593.81% | |
| Fmr Llc | 0.00% | 649,547 | $2,201,963 | $15,277,345 | +$13,075,382 | +593.81% | |
| Balyasny Asset Management L.P. | 0.00% | 317,511 | $1,076,362 | $7,467,859 | +$6,391,497 | +593.81% | |
| Adar1 Capital Management, Llc | 0.05% | 298,757 | $1,012,786 | $7,026,765 | +$6,013,979 | +593.81% | |
| Braidwell Lp | 0.02% | 156,890 | $531,857 | $3,690,053 | +$3,158,196 | +593.81% | |
| Citadel Advisors Llc | 0.00% | 59,795 | $202,705 | $1,406,378 | +$1,203,673 | +593.81% | |
| Geode Capital Management, Llc | 0.00% | 45,850 | $155,471 | $1,078,392 | +$922,921 | +593.63% | |
| Vanguard Capital Management Llc | 0.00% | 30,915 | $104,802 | $727,121 | +$622,319 | +593.80% | |
| Rangeley Capital, Llc | 0.08% | 24,310 | $82,411 | $571,771 | +$489,360 | +593.80% | |
| Hrt Financial Lp | 0.00% | 22,054 | $74,000 | $518,710 | +$444,710 | +600.96% | |
| Blackrock, Inc. | 0.00% | 16,797 | $56,942 | $395,065 | +$338,123 | +593.80% | |
| Dimensional Fund Advisors Lp | 0.00% | 11,724 | $39,745 | $275,748 | +$236,003 | +593.79% | |
| Vanguard Fiduciary Trust Co | 0.00% | 7,353 | $24,927 | $172,943 | +$148,016 | +593.80% | |
| Ubs Group Ag | 0.00% | 3,135 | $10,627 | $73,735 | +$63,108 | +593.85% | |
| Tower Research Capital Llc (Trc) | 0.00% | 1,849 | $6,268 | $43,488 | +$37,220 | +593.82% | |
| Group One Trading Llc | 0.00% | 192 | $651 | $4,516 | +$3,865 | +593.68% | |
| Osaic Holdings, Inc. | 0.00% | 130 | $440 | $3,058 | +$2,618 | +594.91% | |
| Barclays Plc | 0.00% | 87 | $295 | $2,046 | +$1,751 | +593.64% | |
| Whi Trust Co Llc | 0.00% | 72 | $244 | $1,693 | +$1,449 | +594.03% | |
| Bnp Paribas Financial Markets | 0.00% | 4 | $14 | $94 | +$80 | +572.00% |
Frequently asked questions about CYCN
Who are the largest institutional holders of CYCN?
The largest institutional holders of CYCN reported in the latest SEC Form 13F filings include Kalehua Capital Management Llc, Fmr Llc, Balyasny Asset Management L.P., Adar1 Capital Management, Llc, and Braidwell Lp. InsiderSet ranks institutional holders by their latest reported CYCN position.
What is CYCN institutional ownership?
This page tracks CYCN positions reported by institutional investment managers through SEC Form 13F. CYCLERION THERAPEUTICS INC (CYCN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CYCN?
InsiderSet currently tracks 20 institutional managers reporting CYCN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CYCN shareholders.
How much CYCN stock do institutions own?
Institutional investment managers disclosed approximately $11.18M in CYCN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CYCN institutional ownership last updated?
The latest CYCN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CYCN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CYCN position after the reporting date.
Are institutions buying or selling CYCN?
Institutional buying and selling can be analyzed by comparing CYCN positions across consecutive 13F reporting periods. InsiderSet's CYCN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CYCN ownership changes.
How has CYCN institutional ownership changed over time?
InsiderSet tracks CYCN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.