Security key
23255M105
CYCLERION THERAPEUTICS INC - COMMON STOCK (CYCN)
CUSIP: 23255M105
Q1 2021 13F Holders as of 31 Mar 2021
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 22,395,892
- Total 13F value
- $62,484,018
- Share change
- +514,193
- Put/Call ratio
- 167%
- SEC-reported price per share
- $2.79
- Number of holders
- 67
- Value change
- +$1,379,472
- Number of buys
- 32
- Number of sells
- 24
- Shares outstanding
- 4,330,313
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2021
Institutions
67
Top holders
10
CYCN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2021
Previous quarter: Q4 2020
Cyclerion Therapeutics, Inc. SEC filings
Cyclerion Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 23255M105
Recent filing periods:
Ownership snapshot
Top reported holders of CYCN - CYCLERION THERAPEUTICS INC - COMMON STOCK (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
Slate Path Capital LP
Disclosed value leader
Slate Path Capital LP
Comparable rows
15/15
Latest evidence
31 Dec 2020
13F
Lead comparable stake: 143%
Showing 1-6 of 15 holder rows.
Quick read
Slate Path Capital LP leads the comparable SEC ownership view at 143%.
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 Slate Path Capital LP's linked filing trail.
Comparable ownership
Top 5
Slate Path Capital LP
143%
FMR LLC
63%
MFN Partners Management, LP
56%
Artal Group S.A.
42%
VANGUARD GROUP INC
38%
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 |
|---|---|---|---|---|---|
| Slate Path Capital LP |
13F
Company
|
143%
|
$18,960,000
6,196,063 shares
|
— | 31 Dec 2020 |
| FMR LLC |
13F
Company
|
63%
|
$8,322,000
2,719,707 shares
|
— | 31 Dec 2020 |
| MFN Partners Management, LP |
13F
Company
|
56%
|
$7,429,000
2,427,677 shares
|
— | 31 Dec 2020 |
| Artal Group S.A. |
13F
Company
|
42%
|
$5,561,000
1,817,584 shares
|
— | 31 Dec 2020 |
| VANGUARD GROUP INC |
13F
Company
|
38%
|
$5,095,000
1,665,180 shares
|
— | 31 Dec 2020 |
| EcoR1 Capital, LLC |
13F
Company
|
37%
|
$4,915,000
1,606,276 shares
|
— | 31 Dec 2020 |
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 Q1 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
67
Shares
22,395,892
Rows available
67
| 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 Q1 2021 vs Q4 2020 Across Filers
Q4 2020 holders
69
Q1 2021 holders
67
Holder diff
-2
| Investor | Q4 2020 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q4 2020 value | Q1 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend