Security key
23255M204
Cyclerion Therapeutics, Inc. - Common Stock, no par value (CYCN)
CUSIP: 23255M204
Q4 2024 13F Holders as of 31 Dec 2024
- Security type / class
- Equity / Common Stock, no par value
- Total 13F shares
- 382,073
- Total 13F value
- $1,230,314
- Share change
- -660,582
- SEC-reported price per share
- $3.22
- Number of holders
- 19
- Value change
- -$1,793,165
- Number of buys
- 6
- Number of sells
- 5
- Shares outstanding
- 3,367,000
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2024
Institutions
19
Top holders
10
CYCN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2025
Previous quarter: Q3 2024
Cyclerion Therapeutics, Inc. SEC filings
Cyclerion Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 23255M204
Recent filing periods:
Ownership snapshot
Top reported holders 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. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
American Endowment Founda...
Disclosed value leader
Slate Path Capital LP
Comparable rows
15/15
Latest evidence
31 Dec 2024
13D/G
13F
Lead comparable stake: 4.9%
13D/G row: American Endowment Foundation
Showing 1-6 of 15 holder rows.
Quick read
American Endowment Foundation leads the comparable SEC ownership view at 4.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens American Endowment Foundation's linked filing trail.
Comparable ownership
Top 5
American Endowment Foundation
4.9%
FMR LLC
0.2%
Slate Path Capital LP
11%
MFN Partners Management, LP
5%
TYNDALL CAPITAL PARTNERS L P
4.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| American Endowment Foundation |
13D/G
|
4.9%
|
$492,196
133,026 shares
|
$0 | 31 Dec 2024 |
| FMR LLC |
13F
13D/G
Company
|
0.2%
from 13D/G
|
$406,701
157,636 shares
|
— | 30 Sep 2024 |
| Slate Path Capital LP |
13F
Company
|
11%
|
$926,909
357,880 shares
|
— | 30 Sep 2024 |
| MFN Partners Management, LP |
13F
Company
|
5%
|
$437,207
169,460 shares
|
— | 30 Sep 2024 |
| TYNDALL CAPITAL PARTNERS L P |
13F
Company
|
4.9%
|
$426,772
164,777 shares
|
— | 30 Sep 2024 |
| Siren, L.L.C. |
13F
Individual
|
3.4%
|
$300,841
116,155 shares
|
— | 30 Sep 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
19
Shares
382,073
Rows available
19
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2024 vs Q3 2024 Across Filers
Q3 2024 holders
15
Q4 2024 holders
19
Holder diff
4
| Investor | Q3 2024 Shares | Q4 2024 Shares | Share Diff | Share Chg % | Q3 2024 value | Q4 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend