Vault-13

CYCLERION THERAPEUTICS INC

COM · CUSIP 23255M204

21 institutional holders +4 vs Q1 2026
4,949,7724.9m shares reported held*
$16.8mreported value*
9 new 3 added 3 reduced 5 sold out net bought ≈ $16.2m (+4.8m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $3.39.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0102030Q1 23: 1Q2 23: 19Q3 23: 18Q4 23: 16Q1 24: 17Q2 24: 18Q3 24: 16Q4 24: 20Q1 25: 19Q2 25: 18Q3 25: 17Q4 25: 19Q1 26: 17Q2 26: 2121Q1 23Q4 23Q3 24Q2 25Q2 26
Numbers
QuarterHolders
Q1 20231
Q2 202319
Q3 202318
Q4 202316
Q1 202417
Q2 202418
Q3 202416
Q4 202420
Q1 202519
Q2 202518
Q3 202517
Q4 202519
Q1 202617
Q2 202621

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q3 24: 1 bought or addedQ3 24: 7 cut or sold outQ4 24: 7 bought or addedQ4 24: 5 cut or sold outQ4 24Q1 25: 2 bought or addedQ1 25: 3 cut or sold outQ2 25: 4 bought or addedQ2 25: 6 cut or sold outQ2 25Q3 25: 5 bought or addedQ3 25: 5 cut or sold outQ4 25: 8 bought or addedQ4 25: 5 cut or sold outQ4 25Q1 26: 5 bought or addedQ1 26: 7 cut or sold outQ2 26: 12 bought or addedQ2 26: 8 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 202417
Q4 202475
Q1 202523
Q2 202546
Q3 202555
Q4 202585
Q1 202657
Q2 2026128

Biggest buyers

Kalehua Capital Management LLC New +3,302,700+3.3m
FMR LLC Added +644,807+644.8k
Balyasny Asset Management L.P. New +317,511+317.5k
ADAR1 Capital Management, LLC New +298,757+298.8k
BRAIDWELL LP New +156,890+156.9k
CITADEL ADVISORS LLC Added +41,534+41.5k
Rangeley Capital, LLC New +24,310+24.3k
HRT FINANCIAL LP New +22,054+22.1k
VANGUARD CAPITAL MANAGEMENT LLC Added +14,778+14.8k
DIMENSIONAL FUND ADVISORS LP New +11,724+11.7k

Biggest sellers

GEODE CAPITAL MANAGEMENT, LLC Reduced -38,700-38.7k
Kovack Advisors, Inc. Sold out -10,000-10.0k
UBS Group AG Reduced -256-256
MAI Capital Management Sold out -100-100
CITIGROUP INC Sold out -89-89
Caitong International Asset Management Co., Ltd Sold out -4-4
BNP PARIBAS FINANCIAL MARKETS Reduced -1-1
MORGAN STANLEY Sold out -1-1

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Hecht Peter M 13D · may seek influence -8.5 pts · filed 2026-07-20 19.4% -8.5 pts 910.2k≈ $3.1m 2026-07-20
FMR LLC 13G · institution +14.8 pts · filed 2026-05-07 15.0% +14.8 pts 649.5k≈ $2.2m 2026-05-07
BALYASNY ASSET MANAGEMENT L.P. 13G · institution new · filed 2026-08-14 7.3% new 317.5k≈ $1.1m 2026-08-14
ADAR1 Capital Management, LLC 13G · institution new · filed 2026-08-14 7.0% new 298.8k≈ $1.0m 2026-08-14
J. WOOD CAPITAL ADVISORS LLC 13G · passive investor new · filed 2025-10-17 5.4% new 181.8k≈ $616.4k 2025-10-17

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Kalehua Capital Management LLC 3.57% of their portfolio DALLAS, TX 3,302,7003.3m $11.2m $11.2m 3.57% New
2 FMR LLC 0.00% of their portfolio BOSTON, MA 649,547649.5k $2.2m $2.2m 0.00% Added +644.8k +644,807
3 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 317,511317.5k $1.1m $1.1m 0.00% New
4 ADAR1 Capital Management, LLC 0.05% of their portfolio AUSTIN, TX 298,757298.8k $1.0m $1.0m 0.05% New
5 BRAIDWELL LP 0.02% of their portfolio STAMFORD, CT 156,890156.9k $531.9k $531.9k 0.02% New
6 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 59,79559.8k $202.7k $202.7k 0.00% Added +41.5k +41,534
7 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 45,85045.9k $155.5k $155.5k 0.00% Reduced -38.7k -38,700
8 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 30,91530.9k $104.8k $104.8k 0.00% Added +14.8k +14,778
9 Rangeley Capital, LLC 0.08% of their portfolio NEW CANAAN, CT 24,31024.3k $82.4k $82.4k 0.08% New
10 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 22,05422.1k $74.0k $74.0k 0.00% New
11 BlackRock, Inc. 0.00% of their portfolio New York, NY 16,79716.8k $56.9k $56.9k 0.00% Unchanged
12 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 11,72411.7k $39.7k $39.7k 0.00% New
13 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 7,3537.4k $24.9k $24.9k 0.00% Unchanged
14 UBS Group AG 0.00% of their portfolio ZURICH, V8 3,1353.1k $10.6k $10.6k 0.00% Reduced -256 -256
15 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,8491.8k $6.3k $6.3k 0.00% New
16 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 192192 $651 $651 0.00% Unchanged
17 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 130130 $440 $440 0.00% Unchanged
18 Activest Wealth Management 0.00% of their portfolio AVENTURA, FL 100100 $339 $339 0.00% Unchanged
19 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 8787 $295 $295 0.00% New
20 WHI TRUST Co LLC 0.00% of their portfolio CHICAGO, IL 7272 $244 $244 0.00% Unchanged
21 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 44 $14 $14 0.00% Reduced -1 -1