How many institutions held CYCN - Cyclerion Therapeutics, Inc. - Common Stock, no par value in Q4 2023?

15 institutional investors reported CYCN - Cyclerion Therapeutics, Inc. - Common Stock, no par value for Q4 2023. Use the holders table for investor-level position and value details.

Cyclerion Therapeutics, Inc. - Common Stock, no par value (CYCN)

Q: What does CUSIP 23255M204 represent in this 13F holders report?

CUSIP 23255M204 is the security identifier for CYCN - Cyclerion Therapeutics, Inc. - Common Stock, no par value used to aggregate holder disclosures.

CUSIP: 23255M204

Q4 2023 13F Holders as of 31 Dec 2023

Type / Class: Equity / Common Stock, no par value
Shares outstanding: 3,367,000
Total 13F shares: 1,069,490
Share change: -2,785
Total reported value: $3,583,217
Price per share: $3.35
Number of holders: 15
Value change: -$8,652
Number of buys: 5
Number of sells: 8

Quarterly Holders Quick Answers

What is CUSIP 23255M204?
CUSIP 23255M204 identifies CYCN - Cyclerion Therapeutics, Inc. - Common Stock, no par value in SEC institutional holdings data.

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Back to full security ownership history for the broader multi-quarter picture.
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Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2024
Previous quarter: Q3 2023

Recent filing periods for CUSIP 23255M204:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of CYCN - Cyclerion Therapeutics, Inc. - Common Stock, no par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Slate Path Capital LP	13F	Company	11%	357,880	$1,223,950	—	30 Sep 2023	13F
MFN Partners Management, LP	13F	Company	5%	169,460	$576,164	—	30 Sep 2023	13F
FMR LLC	13F	Company	4.9%	164,549	$559,467	—	30 Sep 2023	13F
TYNDALL CAPITAL PARTNERS L P	13F	Company	4.4%	147,712	$505,175	—	30 Sep 2023	13F
Artal Group S.A.	13F	Company	— mixed-class rows	138,955 mixed-class rows	$475,000	—	30 Sep 2023	13F
Terrance McGuire	3/4/5	Director	— class O/S missing	42,010	$142,624	—	30 Nov 2023	3/4/5
VANGUARD GROUP INC	13F	Company	1.2%	40,531	$138,616	—	30 Sep 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.91%	30,749	$104,580	—	30 Sep 2023	13F
Errol B. Desouza	3/4/5	Director	— class O/S missing	30,000	$101,850	—	30 Nov 2023	3/4/5
Dina Katabi	3/4/5	Director	— class O/S missing	20,000	$67,900	—	30 Nov 2023	3/4/5
Steven Hyman	3/4/5	Director	— class O/S missing	20,000	$67,900	—	30 Nov 2023	3/4/5
BlackRock Finance, Inc.	13F	Company	0.53%	18,000	$61,560	—	30 Sep 2023	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	0.07%	2,236	$7,000	—	30 Sep 2023	13F
ROYAL BANK OF CANADA	13F	Company	0.03%	912	$3,000	—	30 Sep 2023	13F
MORGAN STANLEY	13F	Company	0.02%	823	$2,816	—	30 Sep 2023	13F
GROUP ONE TRADING LLC	13F	Company	0.02%	540	$1,836	—	30 Sep 2023	13F
UBS Group AG	13F	Company	0.01%	276	$944	—	30 Sep 2023	13F
OSAIC HOLDINGS, INC.	13F	Company	0.01%	188	$643	—	30 Sep 2023	13F
WELLS FARGO & COMPANY/MN	13F	Company	0%	14	$48	—	30 Sep 2023	13F
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	13F	Company	0%	1	$3	—	30 Sep 2023	13F
RHUMBLINE ADVISERS	13F	Company	0%	1	$3	—	30 Sep 2023	13F
Andreas Busch	3/4/5	Chief Scientific Officer	— class O/S missing	135,000	—	—	20 Jan 2022	3/4/5
Anjeza Gjino	3/4/5	Chief Financial Officer	— class O/S missing	135,000	—	—	20 Jan 2022	3/4/5
Cheryl Gault	3/4/5	Chief Operating Officer	— class O/S missing	135,000	—	—	20 Jan 2022	3/4/5
George H. Conrades	3/4/5	Director	— class O/S missing	20,000	—	—	14 Jun 2022	3/4/5
Marsha Fanucci	3/4/5	Director	— class O/S missing	20,000	—	—	14 Jun 2022	3/4/5
Michael Mendelsohn	3/4/5	Director	— class O/S missing	20,000	—	—	14 Jun 2022	3/4/5
Ole Isacson	3/4/5	Director	— class O/S missing	20,000	—	—	14 Jun 2022	3/4/5
Stephanie Lovell	3/4/5	Director	— class O/S missing	20,000	—	—	14 Jun 2022	3/4/5
Kevin Churchwell	3/4/5	Director	— class O/S missing	10,000	—	—	24 Jun 2021	3/4/5

Institutional Holders of Cyclerion Therapeutics, Inc. - Common Stock, no par value (CYCN) as of Q4 2023

As of 31 Dec 2023, Cyclerion Therapeutics, Inc. - Common Stock, no par value (CYCN) was held by 15 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 1,069,490 shares. The largest 10 holders included Slate Path Capital LP, MFN Partners Management, LP, TYNDALL CAPITAL PARTNERS L P, FMR LLC, Artal Group S.A., GEODE CAPITAL MANAGEMENT, LLC, VANGUARD GROUP INC, BlackRock Inc., UBS Group AG, and MORGAN STANLEY. This page lists 15 institutional shareholders reporting positions in this security for the Q4 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2023 vs Q3 2023 Across Filers

Q3 2023 holders

Q4 2023 holders

Holder diff

-2

Investor	Q3 2023 Shares	Q4 2023 Shares	Share Diff	Share Chg %	Q3 2023 Value $	Q4 2023 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.