Vault-13

CYCLERION THERAPEUTICS INC

COM · CUSIP 23255M204

19 institutional holders +18 vs Q1 2023
995,454995.5k shares reported held*
$4.1mreported value*
19 new 0 added 0 reduced 1 sold out net bought ≈ $4.1m (+995.4k 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 ≈ $4.12. Options: 4 managers hold calls ($572.8k notional), 1 hold puts ($0).

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

01020Q1 23: 1Q2 23: 1919Q1 23Q2 23
Numbers
QuarterHolders
Q1 20231
Q2 202319

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$200k$400k$600kQ3 22 calls: $0Q3 22 puts: $0Q3 22P/C —Q4 22 calls: $0Q4 22 puts: $0Q4 22P/C —Q1 23 calls: $0Q1 23 puts: $0Q1 23P/C —Q2 23 calls: $572.8kQ2 23 puts: $0Q2 23P/C 0.00
Numbers
QuarterCallsPutsP/C
Q3 2022$0$0—
Q4 2022$0$0—
Q1 2023$0$0—
Q2 2023$572.8k$00.00

Biggest buyers

Slate Path Capital LP New +357,880+357.9k
MFN Partners Management, LP New +169,460+169.5k
FMR LLC New +164,949+164.9k
Artal Group S.A. New +138,403+138.4k
VANGUARD GROUP INC New +81,169+81.2k
GEODE CAPITAL MANAGEMENT, LLC New +29,722+29.7k
BlackRock Inc. New +18,000+18.0k
CAPTRUST FINANCIAL ADVISORS New +14,631+14.6k
JANE STREET GROUP, LLC New +13,364+13.4k
ACADIAN ASSET MANAGEMENT LLC New +5,437+5.4k

Biggest sellers

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $351.8k85.6k shares
WOLVERINE TRADING, LLC New $147.4k33.5k shares
GROUP ONE TRADING LLC New $73.6k17.9k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. New $00 shares

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 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Slate Path Capital LP 0.05% of their portfolio New York, NY 357,880357.9k $1.5m $1.5m 0.05% New
2 MFN Partners Management, LP 0.02% of their portfolio BOSTON, MA 169,460169.5k $696.5k $696.5k 0.02% New
3 FMR LLC 0.00% of their portfolio BOSTON, MA 164,949164.9k $677.9k $677.9k 0.00% New
4 Artal Group S.A. 0.02% of their portfolio LUXEMBOURG, N4 138,403138.4k $570.0k $570.0k 0.02% New
5 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 81,16981.2k $334.4k $334.4k 0.00% New
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 29,72229.7k $122.2k $122.2k 0.00% New
7 BlackRock Inc. 0.00% of their portfolio New York, NY 18,00018.0k $74.2k $74.2k 0.00% New
8 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 14,63114.6k $60.3k $60.3k 0.00% New
9 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 13,36413.4k $55.1k $55.1k 0.00% New
10 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 5,4375.4k $22.0k $22.0k 0.00% New
11 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 839839 $3.0k $3.0k 0.00% New
12 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 823823 $3.4k $3.4k 0.00% New
13 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 540540 $2.2k $2.2k 0.00% New
14 UBS Group AG 0.00% of their portfolio ZURICH, V8 186186 $766 $766 0.00% New
15 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 2222 $94 $94 0.00% New
16 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1414 $58 $58 0.00% New
17 CWM, LLC 0.00% of their portfolio OMAHA, NE 1414 $0 $0 0.00% New
18 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 11 $4 $4 0.00% New
19 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% New