Keros Therapeutics Ownership | Who Owns Keros Therapeutics?
Keros Therapeutics Ownership Summary
Keros Therapeutics is owned by 84.60% institutional investors, 3.63% insiders, and 11.77% retail investors. Adar1 capital management is the largest institutional shareholder, holding 13.27% of KROS shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.63% of its assets in Keros Therapeutics shares.
KROS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Keros Therapeutics | 84.60% | 3.63% | 11.77% |
| Sector | Healthcare Stocks | 42.64% | 10.86% | 46.50% |
| Industry | Biotech Stocks | 45.45% | 10.77% | 43.78% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Adar1 capital management | 5.39M | 13.27% | $85.26M |
| Blackrock | 2.51M | 8.53% | $114.86M |
| Blackrock funding, inc. /de | 2.72M | 6.69% | $42.99M |
| Madison avenue partners, lp | 2.71M | 6.67% | $42.84M |
| Vanguard group | 1.53M | 3.75% | $31.06M |
| Tang capital management | 1.42M | 3.49% | $22.45M |
| Goldman sachs group | 1.33M | 3.26% | $20.97M |
| State street | 1.30M | 3.21% | $20.61M |
| Nantahala capital management | 1.23M | 3.04% | $19.51M |
| Orbimed advisors | 1.02M | 2.51% | $16.12M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Adar1 capital management | 5.39M | 8.01% | $85.26M |
| Rangeley capital | 258.62K | 3.54% | $4.09M |
| Madison avenue partners, lp | 2.71M | 2.56% | $42.84M |
| Superstring capital management lp | 95.08K | 1.48% | $1.50M |
| Logos global management lp | 850.00K | 1.21% | $13.45M |
| Monimus capital management, lp | 108.05K | 1.05% | $1.71M |
| Tang capital management | 1.42M | 0.86% | $22.45M |
| Redmile group | 552.51K | 0.85% | $8.74M |
| Nantahala capital management | 1.23M | 0.68% | $19.51M |
| Orbimed advisors | 1.02M | 0.38% | $16.12M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Goldman sachs group | 1.33M | 0.00% | 441.92K |
| Blackrock | 2.51M | 0.00% | 347.23K |
| Millennium management | 878.16K | 0.01% | 305.17K |
| Qube research | 303.12K | 0.01% | 264.44K |
| Susquehanna group, llp | 211.31K | 0.00% | 202.26K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Western standard | - | - | -2.19M |
| Braidwell lp | - | - | -1.89M |
| Darwin global management | - | - | -1.69M |
| Holocene advisors, lp | - | - | -1.20M |
| Vanguard group | 1.53M | 0.00% | -1.19M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Bessemer group | 143.85K | 0.00% | 143.85K | $2.93M |
| Superstring capital management lp | 95.08K | 1.48% | 95.08K | $1.50M |
| Norges bank | 64.90K | 0.00% | 64.90K | $1.03M |
| Massachusetts financial services co /ma/ | 43.70K | 0.00% | 43.70K | $889.63K |
| Hussman strategic advisors | 42.00K | 0.21% | 42.00K | $855.12K |
Sold Out
| Holder | Change |
|---|---|
| Ifp advisors | -1.00 |
| Nelson, van denburg & campbell wealth management group | -4.00 |
| Riggs asset managment | -5.00 |
| Point72 asset management | -6.00 |
| J.safra asset management | -8.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 153 | 12.50% | 34,356,950 | 4.91% | 84 | 1.30% | 80 | 1.27% | 39 | 18.18% |
| Jun 30, 2025 | 143 | -13.86% | 35,921,666 | 4.01% | 88 | 1.22% | 82 | -14.58% | 35 | -7.89% |
| Mar 31, 2025 | 169 | -2.87% | 36,741,515 | -0.02% | 90 | 0.87% | 98 | -14.04% | 38 | 22.58% |
| Dec 31, 2024 | 168 | -1.75% | 35,057,503 | 0.30% | 97 | 1.04% | 110 | 14.58% | 30 | -34.78% |
| Sep 30, 2024 | 170 | 11.11% | 34,920,843 | 11.04% | 96 | 1.27% | 96 | 11.63% | 46 | 15.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.07M | 2.63% | -23.70K |
| Vanguard US Total Market Shares ETF | 960.39K | 2.37% | 1.20K |
| iShares Russell 2000 ETF | 825.23K | 2.03% | - |
| Fidelity Select Health Care | 820.00K | 2.02% | 20.00K |
| SPDR® S&P Biotech ETF | 661.47K | 1.63% | 1.48K |
| Fidelity Advisor Health Care I | 500.00K | 1.23% | 15.00K |
| Fidelity Small Cap Growth | 467.94K | 1.15% | 91.10K |
| Strategic Advisers Fidelity US TtlStk | 459.90K | 1.14% | 47.33K |
| Vanguard Explorer Inv | 454.00K | 1.12% | 85.46K |
| Federated Hermes MDT SCC Institutional | 450.87K | 1.11% | -315.89K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | - | Sell | $2.76M |
| Oct 15, 2025 | ADAR1 Capital Management, LLC | - | Sell | $13.19M |
| Apr 09, 2025 | ADAR1 Capital Management, LLC | - | Buy | $767.86K |
| Apr 09, 2025 | ADAR1 Capital Management, LLC | - | Buy | $5.17M |
| Apr 09, 2025 | ADAR1 Capital Management, LLC | - | Buy | $3.20M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | - |
| 2025 Q4 | - | 2 |
| 2025 Q3 | - | - |
| 2025 Q2 | 5 | - |
| 2025 Q1 | - | - |
KROS Ownership FAQ
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