Skip to content

CYCN CYCLERION THERAPEUTICS INC

Follow

COM (common)

16 managers (17 13F filers) reported a position in CYCN shares at 2026-03-31, 161,922 shares in all. 3 filers opened a position and 6 filers sold out during the quarter.

Managers
16
13F filers
17
New
3
Added
2
Reduced
1
Sold out
6
Shares held by filers
161,922

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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.

HolderSharesValue% of portfolioChangeSource
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC84,550$130K<0.01%+41,24813F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding23,490$36.1KnewTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC18,261$28K<0.01%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.16,797$26K<0.01%013F-HRTimelineGroup
Kovack Advisors, Inc.10,000$15.5K<0.01%new13F-HRTimeline
FMR LLCin group FMR LLC4,740$7.28K<0.01%013F-HRTimelineGroup
UBS Group AGin group UBS Group AG3,391$5.26K<0.01%+3,01513F-HRTimelineGroup
GROUP ONE TRADING LLC192$295<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.130$201<0.01%013F-HRTimelineGroup
MAI Capital Management100$155<0.01%013F-HRTimeline
Activest Wealth Management100$155<0.01%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC89$137<0.01%-8,11513F-HRTimelineGroup
WHI TRUST Co LLC72$112<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS5$8<0.01%013F-HRTimelineGroup
Caitong International Asset Management …4$6<0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1$2<0.01%013F-HRTimelineGroup