Kiniksa Pharmaceuticals Ownership | Who Owns Kiniksa Pharmaceuticals?
Kiniksa Pharmaceuticals Ownership Summary
Kiniksa Pharmaceuticals is owned by 54.84% institutional investors, 3.82% insiders, and 41.34% retail investors. Baker bros. advisors lp is the largest institutional shareholder, holding 3.85% of KNSA shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 1.72% of its assets in Kiniksa Pharmaceuticals shares.
KNSA Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Kiniksa Pharmaceuticals | 54.84% | 3.82% | 41.34% |
| Sector | Healthcare Stocks | 279.42% | 10.64% | -190.05% |
| Industry | Biotech Stocks | 64.05% | 10.69% | 25.27% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Baker bros. advisors lp | 2.82M | 3.85% | $78.16M |
| Tang capital management | 2.33M | 3.17% | $64.43M |
| Fairmount funds management | 1.77M | 2.41% | $49.05M |
| Acadian asset management | 1.27M | 1.73% | $35.07M |
| Braidwell lp | 1.10M | 1.50% | $30.51M |
| Pictet asset management sa | 984.60K | 1.34% | $27.24M |
| Qube research | 888.36K | 1.21% | $24.58M |
| Point72 asset management | 848.55K | 1.16% | $23.48M |
| Arrowstreet capital, limited partnership | 735.42K | 1.00% | $20.35M |
| Blackrock funding, inc. /de | 702.88K | 0.96% | $19.45M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Fairmount funds management | 1.77M | 6.36% | $49.05M |
| Tang capital management | 2.33M | 3.26% | $64.43M |
| Parkman healthcare partners | 488.80K | 1.55% | $13.52M |
| Braidwell lp | 1.10M | 1.04% | $30.51M |
| Cannon global investment management | 17.30K | 0.98% | $478.69K |
| Rice hall james & associates | 638.23K | 0.95% | $17.66M |
| Baker bros. advisors lp | 2.82M | 0.76% | $78.16M |
| Birchview capital, lp | 30.00K | 0.48% | $593.40K |
| Soleus capital management | 254.69K | 0.47% | $7.05M |
| Silverarc capital management | 75.96K | 0.39% | $2.10M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Arrowstreet capital, limited partnership | 735.42K | 0.01% | 735.42K |
| Fairmount funds management | 1.77M | 6.36% | 670.59K |
| Qube research | 888.36K | 0.03% | 653.24K |
| Voloridge investment management | 333.92K | 0.03% | 268.81K |
| Acadian asset management | 1.27M | 0.07% | 233.67K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | - | - | -4.19M |
| Vanguard group | - | - | -2.98M |
| Blackrock funding, inc. /de | 702.88K | 0.00% | -2.73M |
| Rubric capital management lp | - | - | -2.20M |
| State street | - | - | -1.89M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Great lakes advisors | 126.79K | 0.03% | 126.79K | $3.51M |
| Weiss asset management lp | 111.71K | 0.04% | 111.71K | $3.09M |
| Healthcare of ontario pension plan trust fund | 67.50K | 0.00% | 67.50K | $1.87M |
| Baird financial group | 55.31K | 0.00% | 55.31K | $1.53M |
| Point72 asia (singapore) pte. | 25.90K | 0.13% | 25.90K | $716.76K |
Sold Out
| Holder | Change |
|---|---|
| Srs capital advisors | -1.00 |
| Pnc financial services group | -8.00 |
| Riggs asset managment | -30.00 |
| Larson financial group | -33.00 |
| Nelson, van denburg & campbell wealth management group | -34.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2025 | 178 | 9.20% | 39,838,056 | 2.13% | 54 | 1.84% | 95 | 21.79% | 55 | -5.17% |
| Dec 31, 2024 | 1 | -50.00% | 98,093 | -23.09% | - | 432.56% | 1 | - | - | - |
| Sep 30, 2024 | 2 | -60.00% | 127,543 | 90.97% | - | 1987.95% | 1 | -66.67% | - | - |
| Jun 30, 2024 | 5 | -96.88% | 66,788 | -99.83% | - | 0.00% | 3 | -96.47% | - | -100.00% |
| Mar 31, 2024 | 160 | 6.67% | 38,944,112 | 13.77% | 55 | 2.33% | 85 | 23.19% | 48 | -14.29% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.25M | 1.72% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.19M | 1.61% | -26.43K |
| Pictet Biotech | 965.39K | 1.36% | 965.39K |
| iShares Russell 2000 ETF | 971.72K | 1.33% | - |
| Vanguard Small Cap Index | 924.53K | 1.25% | -6.09K |
| Pictet-Biotech P USD | 622.00K | 0.84% | -10.59K |
| Vanguard Institutional Extnd Mkt Idx Tr | 567.21K | 0.80% | 795.00 |
| Vanguard Small Cap Growth Index Inv | 524.53K | 0.71% | -196.00 |
| Fidelity Small Cap Growth | 490.30K | 0.66% | -1.22K |
| Pictet-Global Megatrend Sel I USD | 411.44K | 0.56% | -4.00K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 14, 2025 | Malley Thomas | - | Sell | $2.59M |
| Aug 12, 2025 | Malley Thomas | - | Sell | $1.60M |
| Aug 13, 2025 | Malley Thomas | - | Sell | $1.67M |
| Aug 06, 2025 | Paolini John F. | CHIEF MEDICAL OFFICER | Sell | $954.53K |
| Aug 05, 2025 | Tessari Eben | CHIEF OPERATING OFFICER | Sell | $4.58M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 9 |
| 2025 Q2 | - | 29 |
| 2025 Q1 | - | 8 |
| 2024 Q4 | - | 9 |
| 2024 Q3 | - | 14 |
KNSA Ownership FAQ
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