Vault-13

CYCLERION THERAPEUTICS INC

COM · CUSIP 23255M204

17 institutional holders +1 vs Q4 2023
1,071,5521.1m shares reported held*
$3.4mreported value*
2 new 5 added 1 reduced 1 sold out net bought ≈ $4.3k (+1.4k 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 ≈ $3.20. Options: 1 managers hold calls ($0 notional), 1 hold puts ($0).

Trends to Q1 2024

Institutional holders

Managers reporting a position, each quarter

01020Q1 23: 1Q2 23: 19Q3 23: 18Q4 23: 16Q1 24: 1717Q1 23Q2 23Q3 23Q4 23Q1 24
Numbers
QuarterHolders
Q1 20231
Q2 202319
Q3 202318
Q4 202316
Q1 202417

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 24
Numbers
QuarterBought or addedCut or sold out
Q2 2023191
Q3 202347
Q4 202367
Q1 202472

Calls vs puts

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

CallsPuts
$0$200k$400k$600kQ2 23 calls: $572.8kQ2 23 puts: $0Q2 23P/C 0.00Q3 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 —
Numbers
QuarterCallsPutsP/C
Q2 2023$572.8k$00.00
Q3 2023$401.1k$00.00
Q4 2023$346.7k$00.00
Q1 2024$0$0—

Biggest buyers

Biggest sellers

FMR LLC Reduced -522-522
OSAIC HOLDINGS, INC. Sold out -187-187

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, Q1 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Slate Path Capital LP 0.02% of their portfolio New York, NY 357,880357.9k $1.1m $1.1m 0.02% Unchanged
2 MFN Partners Management, LP 0.02% of their portfolio BOSTON, MA 169,460169.5k $542.3k $542.3k 0.02% Unchanged
3 TYNDALL CAPITAL PARTNERS L P 100.00% of their portfolio NEW YORK, NY 164,777164.8k $527.3k $527.3k 100.00% Added +348 +348
4 FMR LLC 0.00% of their portfolio BOSTON, MA 162,327162.3k $519.4k $519.4k 0.00% Reduced -522 -522
5 Artal Group S.A. 0.01% of their portfolio LUXEMBOURG, N4 138,955139.0k $444.7k $444.7k 0.01% Unchanged
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 32,08232.1k $102.7k $102.7k 0.00% Added +823 +823
7 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 23,49023.5k $75.2k $75.2k 0.00% Unchanged
8 BlackRock Inc. 0.00% of their portfolio New York, NY 17,16917.2k $54.9k $54.9k 0.00% Unchanged
9 UBS Group AG 0.00% of their portfolio ZURICH, V8 2,5242.5k $8.1k $8.1k 0.00% Added +296 +296
10 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,9471.9k $6.2k $6.2k 0.00% Added +551 +551
11 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 540540 $1.7k $1.7k 0.00% Unchanged
12 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 352352 $1.0k $1.0k 0.00% Added +22 +22
13 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3333 $106 $106 0.00% New
14 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1515 $48 $48 0.00% Unchanged
15 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 11 $3 $3 0.00% Unchanged
16 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged
17 Strengthening Families & Communities, LLC 0.00% of their portfolio BOSTON, MA 00 $0 $0 0.00% New