Vault-13

CYCLERION THERAPEUTICS INC

COM · CUSIP 23255M204

18 institutional holders -1 vs Q1 2025
362,816362.8k shares reported held*
$1.1mreported value*
1 new 3 added 4 reduced 2 sold out net sold ≈ $30.8k (-10.6k 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 ≈ $2.91. Options: 1 managers hold calls ($0 notional), 1 hold puts ($0).

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

01020Q1 23: 1Q2 23: 19Q3 23: 18Q4 23: 16Q1 24: 17Q2 24: 18Q3 24: 16Q4 24: 20Q1 25: 19Q2 25: 1818Q1 23Q3 23Q1 24Q3 24Q1 25Q2 25
Numbers
QuarterHolders
Q1 20231
Q2 202319
Q3 202318
Q4 202316
Q1 202417
Q2 202418
Q3 202416
Q4 202420
Q1 202519
Q2 202518

Buyers vs sellers

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

Bought or addedCut or sold out
10010Q3 23: 4 bought or addedQ3 23: 7 cut or sold outQ4 23: 6 bought or addedQ4 23: 7 cut or sold outQ4 23Q1 24: 7 bought or addedQ1 24: 2 cut or sold outQ2 24: 7 bought or addedQ2 24: 5 cut or sold outQ2 24Q3 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 25
Numbers
QuarterBought or addedCut or sold out
Q3 202347
Q4 202367
Q1 202472
Q2 202475
Q3 202417
Q4 202475
Q1 202523
Q2 202546

Biggest buyers

Biggest sellers

TYNDALL CAPITAL PARTNERS L P Reduced -9,590-9.6k
UBS Group AG Reduced -3,274-3.3k
GROUP ONE TRADING LLC Reduced -348-348
FMR LLC Reduced -200-200
ELEVATION WEALTH PARTNERS, LLC Sold out -20-20
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO Sold out -1-1

Biggest calls

Biggest puts

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 TYNDALL CAPITAL PARTNERS L P 100.00% of their portfolio NEW YORK, NY 155,187155.2k $451.6k $451.6k 100.00% Reduced -9.6k -9,590
2 Siren, L.L.C. 0.02% of their portfolio New York, NY 116,155116.2k $338.0k $338.0k 0.02% Unchanged
3 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 32,73532.7k $95.3k $95.3k 0.00% Added +1.1k +1,132
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 23,49023.5k $68.4k $68.4k 0.00% Unchanged
5 BlackRock, Inc. 0.00% of their portfolio New York, NY 16,79716.8k $48.9k $48.9k 0.00% Unchanged
6 UBS Group AG 0.00% of their portfolio ZURICH, V8 9,7279.7k $28.3k $28.3k 0.00% Reduced -3.3k -3,274
7 FMR LLC 0.00% of their portfolio BOSTON, MA 4,7404.7k $13.8k $13.8k 0.00% Reduced -200 -200
8 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 2,7632.8k $8.0k $8.0k 0.00% Added +1.7k +1,709
9 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 649649 $1.9k $1.9k 0.00% Unchanged
10 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 192192 $559 $559 0.00% Reduced -348 -348
11 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 130130 $378 $378 0.00% Unchanged
12 MAI Capital Management 0.00% of their portfolio INDEPENDENCE, OH 100100 $291 $291 0.00% Unchanged
13 Activest Wealth Management 0.00% of their portfolio AVENTURA, FL 100100 $291 $291 0.00% Unchanged
14 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 2424 $70 $70 0.00% Added +5 +5
15 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 1111 $32 $32 0.00% Unchanged
16 Pandora Wealth, Inc. 0.00% of their portfolio OAKBROOK TERRACE, IL 1111 $32 $32 0.00% New
17 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 55 $15 $15 0.00% Unchanged
18 CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio BIRMINGHAM, AL 00 $0 $0 — Unchanged