DOSSIER · 13F Holders · Q2 2026
CYCN

CYCLERION THERAPEUTICS INC

20 institutions still hold CYCLERION THERAPEUTICS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 23255M204·20 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$16M
visible holders
Holders
20
filers reporting
Concentration
69.43%
Kalehua Capital Management LLC #1
top holder share
AI Holders Summary · Q2 2026

20 institutions reported CYCN in Q2 2026. Kalehua Capital Management LLC leads at 69.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Kalehua Capital Management LLC
CIK 0002106181
$11M3.3M3.57%Q2 2026
02
FMR LLC
CIK 0000315066
$2M650K0.00%Q2 2026
03
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$1M318K0.00%Q2 2026
04
ADAR1 Capital Management, LLC
CIK 0001940272
$1M299K0.05%Q2 2026
05
CITADEL ADVISORS LLC
CIK 0001423053
$203K60K0.00%Q2 2026
06
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$155K46K0.00%Q2 2026
07
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$105K31K0.00%Q2 2026
08
BlackRock, Inc.
CIK 0002012383
$57K17K0.00%Q2 2026
09
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$40K12K0.00%Q2 2026
10
TWO SIGMA ADVISERS, LP
CIK 0001478735
$36K28K0.00%Q4 2025
11
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$25K7K0.00%Q2 2026
12
UBS Group AG
CIK 0001610520
$11K3K0.00%Q2 2026
13
Tower Research Capital LLC (TRC)
CIK 0001533421
$6K2K0.00%Q2 2026
14
GROUP ONE TRADING LLC
CIK 0000932540
$6511920.00%Q2 2026
15
OSAIC HOLDINGS, INC.
CIK 0001677044
$4401300.00%Q2 2026
16
Activest Wealth Management
CIK 0001883134
$3391000.00%Q2 2026
17
BARCLAYS PLC
CIK 0000312069
$295870.00%Q2 2026
18
WHI TRUST Co LLC
CIK 0002013902
$244720.00%Q2 2026
19
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$1440.00%Q2 2026
20
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025
Insiders at CYCLERION THERAPEUTICS INC
Chicko Rhonda M.Graul Regina MargaretHecht Peter MHiggins Michael JHyman StevenDesouza Errol BMcguire TerranceLovell Stephanie