CYCN · Cyclerion Therapeutics, Inc.
$4.15
+0.15 (+3.75%)
At close · Aug 26
Going-concern doubt
— flagged Aug 4, 2026
Substantial doubt about the company's ability to continue as a going concern.
“The Company's expectation to generate negative operating cash flows in the future and the need for additional funding to support its planned operations, raise substantial doubt regarding the Company's ability to continue as a going concern. Management's plans to alleviate the conditions that raise substantial doubt include reduced spending, and the pursuit of additional capital. Management has concluded the likelihood that its plan to successfully obtain sufficient funding, or adequately reduce expenditures, while reasonably possible, is less than probable. Accordingly, the Company has concluded that substantial doubt exists about the Company's ability to continue as a going concern.”View the 10-Q filed Aug 4, 2026
Market Cap
$18.73M
Shares
4.68M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 21
Total Value: $11,181,639
Total Shares: 3,298,422
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 21 13F filers · Δ vs Mar 31, 2026Top Holder
50.1%
−2.2 pts
Top 5
93.2%
+3.2 pts
Top 10
98.7%
−1.0 pts
HHI
3,099
Highly concentrated−33
Quarterly Activity
vs Mar 31, 2026
New
9
Increased
3
Decreased
3
Sold Out
5
Unchanged
6
Holder count:
+4
Institutional value:
+4355.4%
Shares held:
+1937.0%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega FMR LLC | +644,807 | 649,547 | |
| Mega CITADEL ADVISORS LLC | +41,534 | 59,795 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | +14,778 | 30,915 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | −38,700 | 45,850 | |
| Mega UBS Group AG | −256 | 3,135 | |
| Mega BNP PARIBAS ARBITRAGE, SA | −1 | 4 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small Kalehua Capital Management LLC | 1,651,350 | $5,598,076 | |
| Large Balyasny Asset Management L.P. | 317,511 | $1,076,362 | |
| Mid ADAR1 Capital Management, LLC | 298,757 | $1,012,786 | |
| Mid BRAIDWELL LP | 156,890 | $531,857 | |
| Small Rangeley Capital, LLC | 24,310 | $82,410 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid Kovack Advisors, Inc. | 10,000 | $15,500 | |
| Large MAI Capital Management | 100 | $155 | |
| Mega CITIGROUP INC | 89 | $137 | |
| Small Caitong International Asset Management Co., Ltd | 4 | $6 | |
| Mega MORGAN STANLEY | 1 | $1 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Small Kalehua Capital Management LLC | $5,598,076 | 50.06% | 1,651,350 | Shares | 2026-08-19 | |
| Mega FMR LLC | $2,201,963 | 19.69% | 649,547 | Shares | 2026-08-13 | |
| Large Balyasny Asset Management L.P. | $1,076,362 | 9.63% | 317,511 | Shares | 2026-08-14 | |
| Mid ADAR1 Capital Management, LLC | $1,012,786 | 9.06% | 298,757 | Shares | 2026-08-14 | |
| Mid BRAIDWELL LP | $531,857 | 4.76% | 156,890 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $202,705 | 1.81% | 59,795 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $155,431 | 1.39% | 45,850 | Shares | 2026-08-12 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $104,801 | 0.94% | 30,915 | Shares | 2026-08-13 | |
| Small Rangeley Capital, LLC | $82,410 | 0.74% | 24,310 | Shares | 2026-08-14 | |
| Large HRT FINANCIAL LP | $74,763 | 0.67% | 22,054 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. | $56,941 | 0.51% | 16,797 | Shares | 2026-08-07 | |
| Mega DIMENSIONAL FUND ADVISORS LP | $39,743 | 0.36% | 11,724 | Shares | 2026-08-11 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $24,926 | 0.22% | 7,353 | Shares | 2026-08-13 | |
| Mega UBS Group AG | $10,627 | 0.10% | 3,135 | Shares | 2026-08-13 | |
| Mid Tower Research Capital LLC (TRC) | $6,268 | 0.06% | 1,849 | Shares | 2026-08-11 | |
| Mid GROUP ONE TRADING LLC | $650 | 0.01% | 192 | Shares | 2026-08-14 | |
| Large OSAIC HOLDINGS, INC. | $440 | 0.00% | 130 | Shares | 2026-08-14 | |
| Small Activest Wealth Management | $339 | 0.00% | 100 | Shares | 2026-07-16 | |
| Mega BARCLAYS PLC | $294 | 0.00% | 87 | Shares | 2026-08-14 | |
| Micro WHI TRUST Co LLC Bank | $244 | 0.00% | 72 | Shares | 2026-08-11 | |
| Mega BNP PARIBAS ARBITRAGE, SA | $13 | 0.00% | 4 | Shares | 2026-08-13 |
Key facts
CIK
1755237
CUSIP
23255M204
13F (30d)
22 filings
20 filers
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