KRSA · Korsana Biosciences, Inc. · Holdings
$30.98
-0.93 (-2.90%)
At close · Sep 14
Going-concern doubt
— flagged Aug 4, 2026
Substantial doubt about the company's ability to continue as a going concern.
“Accordingly, we have concluded that substantial doubt exists about our ability to continue as a going concern.”View the 10-Q filed Aug 4, 2026
Market Cap
$21.34M
Shares
668,764
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
2
Sold Out
5
Unchanged
7
Holder count:
+4
Institutional value:
+4355.3%
Shares held:
+1937.0%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega FMR LLC | +92,115 | 92,792 | |
| Mega CITADEL ADVISORS LLC | +5,933 | 8,542 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | +2,111 | 4,416 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | −5,529 | 6,550 | |
| Mega UBS Group AG | −36 | 448 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small Kalehua Capital Management LLC | 235,907 | $5,598,076 | |
| Large Balyasny Asset Management L.P. | 45,359 | $1,076,362 | |
| Mid ADAR1 Capital Management, LLC | 42,680 | $1,012,786 | |
| Mid BRAIDWELL LP | 22,413 | $531,857 | |
| Small Rangeley Capital, LLC | 3,473 | $82,410 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid Kovack Advisors, Inc. | 1,429 | $15,500 | |
| Large MAI Capital Management | 14 | $155 | |
| Mega CITIGROUP INC | 13 | $137 | |
| Small Caitong International Asset Management Co., Ltd | 1 | $6 | |
| Mega MORGAN STANLEY | 0 | $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 | 2026-09-02 | |
| 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 |