Cyclerion Therapeutics Inc.
13F holders, Q2 2026 (June 30)21holders +4
9new positions
5sold out
1famous investor
$3.39avg. 13F price*
At the end of Q2 2026, 21 institutions reported holding Cyclerion Therapeutics Inc. in their 13F filings, up 4 from Q1 2026. 9 opened new positions and 5 sold out. The largest holders were Kalehua Capital Management LLC ($5.6M), FMR LLC ($2.2M) and Balyasny Asset Management L.P. ($1.1M). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Cyclerion Therapeutics Inc.
- CUSIP
- 23255M204
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 9 | $8.4M |
| Exits | 5 | $16K |
All 13F filers, Q1 2026 → Q2 2026: 3,185,651 shares bought and 49,151 shares sold, net +3,136,500 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 21 holders
| Kalehua Capital Management LLC | 3.22% | New | 1,651,350 | $5.6M |
| FMR LLC | 0.00% | Add +13603.5% | 649,547 | $2.2M |
| Balyasny Asset Management L.P. | 0.00% | New | 317,511 | $1.1M |
| ADAR1 Capital Management, LLC | 0.05% | New | 298,757 | $1.0M |
| Braidwell LP | 0.02% | New | 156,890 | $532K |
| Citadel Advisors | 0.00% | Add +227.4% | 59,795 | $203K |
| Geode Capital Management, LLC | 0.00% | Reduce -45.8% | 45,850 | $155K |
| Vanguard Capital Management LLC | 0.00% | Add +91.6% | 30,915 | $105K |
| Rangeley Capital, LLC | 0.08% | New | 24,310 | $82K |
| HRT Financial LP | 0.00% | New | 22,054 | $74K |
| BlackRock, Inc. | 0.00% | No change | 16,797 | $57K |
| Dimensional Fund Advisors LP | 0.00% | New | 11,724 | $40K |
| Vanguard Fiduciary Trust Co. | 0.00% | No change | 7,353 | $25K |
| UBS Group AG | 0.00% | Reduce -7.5% | 3,135 | $11K |
| Tower Research Capital LLC (TRC) | 0.00% | New | 1,849 | $6K |
| Group One Trading LLC | 0.00% | No change | 192 | $651 |
| Osaic Holdings, Inc. | 0.00% | No change | 130 | $440 |
| Activest Wealth Management | 0.00% | No change | 100 | $339 |
| Barclays PLC | 0.00% | New | 87 | $295 |
| WHI TRUST Co LLC | 0.00% | No change | 72 | $244 |
| BNP Paribas Financial Markets | 0.00% | Reduce -20.0% | 4 | $14 |
"% of holder's portfolio" is CYCLERION THERAPEUTICS INC's weight in each manager's 13F, not the share of Cyclerion Therapeutics Inc. the manager owns.