CYCN CYCLERION THERAPEUTICS INC
FollowCOM (common)
18 managers (18 13F filers) reported a position in CYCN shares at 2025-06-30, 362,816 shares in all. 1 filer opened a position and 2 filers sold out during the quarter.
- Managers
- 18
- 13F filers
- 18
- New
- 1
- Added
- 3
- Reduced
- 4
- Sold out
- 2
- Shares held by filers
- 362,816
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, Q2 2025
Filers in the available 13F reports with a share position at 2025-06-30, 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 |
|---|---|---|---|---|---|
| TYNDALL CAPITAL PARTNERS L P | 155,187 | $452K | 100% | -9,590 | 13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them. |
| Siren, L.L.C.in group Siren, L.L.C. | 116,155 | $338K | 0.02% | 0 | 13F-HRTimelineGroup |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 32,735 | $95.3K | <0.01% | +1,132 | 13F-HRTimelineGroup |
| VANGUARD GROUP INCin group VANGUARD GROUP INC | 23,490 | $68.4K | <0.01% | 0 | 13F-HRTimelineGroup |
| BlackRock, Inc.in group BlackRock, Inc. | 16,797 | $48.9K | <0.01% | 0 | 13F-HRTimelineGroup |
| UBS Group AGin group UBS Group AG | 9,727 | $28.3K | <0.01% | -3,274 | 13F-HRTimelineGroup |
| FMR LLCin group FMR LLC | 4,740 | $13.8K | <0.01% | -200 | 13F-HRTimelineGroup |
| Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T… | 2,763 | $8.04K | <0.01% | +1,709 | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 649 | $1.89K | <0.01% | 0 | 13F-HRTimelineGroup |
| GROUP ONE TRADING LLC | 192 | $559 | <0.01% | -348 | 13F-HRTimeline |
| OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC. | 130 | $378 | <0.01% | 0 | 13F-HR/ATimelineGroup |
| MAI Capital Management | 100 | $291 | <0.01% | 0 | 13F-HRTimeline |
| Activest Wealth Management | 100 | $291 | <0.01% | 0 | 13F-HRTimeline |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 24 | $70 | <0.01% | +5 | 13F-HRTimelineGroup |
| SBI Securities Co., Ltd. | 11 | $32 | <0.01% | 0 | 13F-HRTimeline |
| Pandora Wealth, Inc. | 11 | $32 | <0.01% | new | 13F-HRTimeline |
| BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS | 5 | $15 | <0.01% | 0 | 13F-HRTimelineGroup |
| CONCOURSE FINANCIAL GROUP SECURITIES, I… | 0 | $0 | 0 | 13F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios. |