Vault-13

CYCLERION THERAPEUTICS INC

COM · CUSIP 23255M204

18 institutional holders +1 vs Q1 2024
1,051,7101.1m shares reported held*
$2.4mreported value*
3 new 4 added 3 reduced 2 sold out net sold ≈ $45.6k (-19.8k 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 ≈ $2.29. Options: 1 managers hold calls ($0 notional), 1 hold puts ($0).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

01020Q1 23: 1Q2 23: 19Q3 23: 18Q4 23: 16Q1 24: 17Q2 24: 1818Q1 23Q2 23Q3 23Q4 23Q1 24Q2 24
Numbers
QuarterHolders
Q1 20231
Q2 202319
Q3 202318
Q4 202316
Q1 202417
Q2 202418

Buyers vs sellers

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

Bought or addedCut or sold out
20020Q2 23: 19 bought or addedQ2 23: 1 cut or sold outQ2 23Q3 23: 4 bought or addedQ3 23: 7 cut or sold outQ3 23Q4 23: 6 bought or addedQ4 23: 7 cut or sold outQ4 23Q1 24: 7 bought or addedQ1 24: 2 cut or sold outQ1 24Q2 24: 7 bought or addedQ2 24: 5 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q2 2023191
Q3 202347
Q4 202367
Q1 202472
Q2 202475

Calls vs puts

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

CallsPuts
$0$200k$400k$600kQ3 23 calls: $401.1kQ3 23 puts: $0Q3 23P/C 0.00Q4 23 calls: $346.7kQ4 23 puts: $0Q4 23P/C 0.00Q1 24 calls: $0Q1 24 puts: $0Q1 24P/C —Q2 24 calls: $0Q2 24 puts: $0Q2 24P/C —
Numbers
QuarterCallsPutsP/C
Q3 2023$401.1k$00.00
Q4 2023$346.7k$00.00
Q1 2024$0$0—
Q2 2024$0$0—

Biggest buyers

Biggest sellers

Artal Group S.A. Reduced -21,312-21.3k
MORGAN STANLEY Reduced -1,298-1.3k
FMR LLC Reduced -908-908
WELLS FARGO & COMPANY/MN Sold out -15-15
Strengthening Families & Communities, LLC Sold out +00

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 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Slate Path Capital LP 0.02% of their portfolio New York, NY 357,880357.9k $823.1k $823.1k 0.02% Unchanged
2 MFN Partners Management, LP 0.01% of their portfolio BOSTON, MA 169,460169.5k $386.4k $386.4k 0.01% Unchanged
3 TYNDALL CAPITAL PARTNERS L P 100.00% of their portfolio NEW YORK, NY 164,777164.8k $379.0k $379.0k 100.00% Unchanged
4 FMR LLC 0.00% of their portfolio BOSTON, MA 161,419161.4k $368.0k $368.0k 0.00% Reduced -908 -908
5 Artal Group S.A. 0.01% of their portfolio LUXEMBOURG, N4 117,643117.6k $270.6k $270.6k 0.01% Reduced -21.3k -21,312
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 33,97834.0k $77.5k $77.5k 0.00% Added +1.9k +1,896
7 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 23,49023.5k $54.0k $54.0k 0.00% Unchanged
8 BlackRock Inc. 0.00% of their portfolio New York, NY 17,16917.2k $39.5k $39.5k 0.00% Unchanged
9 UBS Group AG 0.00% of their portfolio ZURICH, V8 2,7062.7k $6.2k $6.2k 0.00% Added +182 +182
10 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,4641.5k $3.4k $3.4k 0.00% Added +1.4k +1,431
11 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 649649 $1.5k $1.5k 0.00% Reduced -1.3k -1,298
12 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 540540 $1.2k $1.2k 0.00% Unchanged
13 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 416416 $1.0k $1.0k 0.00% Added +64 +64
14 Activest Wealth Management 0.00% of their portfolio AVENTURA, FL 100100 $230 $230 0.00% New
15 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 1616 $37 $37 0.00% New
16 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 22 $5 $5 0.00% New
17 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 11 $2 $2 0.00% Unchanged
18 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged