CYCN CYCLERION THERAPEUTICS INC
FollowCOM (common)
17 managers (17 13F filers) reported a position in CYCN shares at 2025-09-30, 258,836 shares in all. 3 filers opened a position and 3 filers sold out during the quarter.
- Managers
- 17
- 13F filers
- 17
- New
- 3
- Added
- 2
- Reduced
- 3
- Sold out
- 3
- Shares held by filers
- 258,836
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, Q3 2025
Filers in the available 13F reports with a share position at 2025-09-30, 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. | 116,155 | $267K | 0.01% | 0 | 13F-HRTimelineGroup |
| DRW Securities, LLC | 43,617 | $100K | 0.01% | new | 13F-HRTimeline |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 37,158 | $85.5K | <0.01% | +4,423 | 13F-HRTimelineGroup |
| VANGUARD GROUP INCin group VANGUARD GROUP INC | 23,490 | $54K | <0.01% | 0 | 13F-HRTimelineGroup |
| BlackRock, Inc.in group BlackRock, Inc. | 16,797 | $38.6K | <0.01% | 0 | 13F-HRTimelineGroup |
| TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP | 13,293 | $30.6K | <0.01% | new | 13F-HRTimelineGroup |
| FMR LLCin group FMR LLC | 4,746 | $10.9K | <0.01% | +6 | 13F-HRTimelineGroup |
| Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T… | 2,328 | $5.35K | <0.01% | -435 | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 649 | $1.49K | <0.01% | 0 | 13F-HR/ATimelineGroup |
| GROUP ONE TRADING LLC | 192 | $442 | <0.01% | 0 | 13F-HRTimeline |
| OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC. | 130 | $304 | <0.01% | 0 | 13F-HRTimelineGroup |
| MAI Capital Management | 100 | $230 | <0.01% | 0 | 13F-HRTimeline |
| Activest Wealth Management | 100 | $230 | <0.01% | 0 | 13F-HRTimeline |
| UBS Group AGin group UBS Group AG | 49 | $113 | <0.01% | -9,678 | 13F-HRTimelineGroup |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 22 | $50 | <0.01% | -2 | 13F-HR/ATimelineGroup |
| BARCLAYS PLCin group BARCLAYS PLC | 5 | $12 | <0.01% | new | 13F-HR/ATimelineGroup |
| BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS | 5 | $12 | <0.01% | 0 | 13F-HRTimelineGroup |