CYCN CYCLERION THERAPEUTICS INC
FollowCOM (common)
18 managers (19 13F filers) reported a position in CYCN shares at 2025-12-31, 296,255 shares in all. 3 filers opened a position and 2 filers sold out during the quarter.
- Managers
- 18
- 13F filers
- 19
- New
- 3
- Added
- 5
- Reduced
- 3
- Sold out
- 2
- Shares held by filers
- 296,255
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q4 2025
Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| Siren, L.L.C.in group Siren, L.L.C. | 115,603 | $147K | <0.01% | -552 | 13F-HRTimelineGroup |
| TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding | 69,855 | $88.7K | +56,562 | Timeline
| |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 43,302 | $55K | <0.01% | +6,144 | 13F-HRTimelineGroup |
| VANGUARD GROUP INCin group VANGUARD GROUP INC | 23,490 | $29.8K | <0.01% | 0 | 13F-HRTimelineGroup |
| BlackRock, Inc.in group BlackRock, Inc. | 16,797 | $21.3K | <0.01% | 0 | 13F-HRTimelineGroup |
| XTX Topco Ltdin group XTX Topco Ltd | 10,027 | $12.7K | <0.01% | new | 13F-HRTimelineGroup |
| CITIGROUP INCin group CITIGROUP INC | 8,204 | $10.4K | <0.01% | new | 13F-HRTimelineGroup |
| FMR LLCin group FMR LLC | 4,740 | $6.02K | <0.01% | -6 | 13F-HRTimelineGroup |
| Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T… | 3,154 | $4.01K | <0.01% | +826 | 13F-HRTimelineGroup |
| UBS Group AGin group UBS Group AG | 376 | $478 | <0.01% | +327 | 13F-HRTimelineGroup |
| GROUP ONE TRADING LLC | 192 | $244 | <0.01% | 0 | 13F-HRTimeline |
| OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC. | 130 | $165 | <0.01% | 0 | 13F-HRTimelineGroup |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 107 | $136 | <0.01% | +85 | 13F-HRTimelineGroup |
| MAI Capital Management | 100 | $127 | <0.01% | 0 | 13F-HRTimeline |
| Activest Wealth Management | 100 | $127 | <0.01% | 0 | 13F-HRTimeline |
| WHI TRUST Co LLC | 72 | $91 | <0.01% | 13F-HRTimeline | |
| BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS | 5 | $6 | <0.01% | 0 | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 1 | $2 | <0.01% | -648 | 13F-HR/ATimelineGroup |