Kiniksa Pharmaceuticals Ownership | Who Owns Kiniksa Pharmaceuticals?
Kiniksa Pharmaceuticals Ownership Summary
Kiniksa Pharmaceuticals is owned by 9.91% institutional investors, 3.53% insiders, and 86.56% retail investors. Fmr is the largest institutional shareholder, holding 9.20% 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 | 9.91% | 3.53% | 86.56% |
| Sector | Healthcare Stocks | 232.80% | 10.63% | -143.43% |
| Industry | Biotech Stocks | 379.48% | 10.37% | -289.85% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Fmr | 6.82M | 9.20% | $328.56M |
| Rubric capital management lp | 3.75M | 5.05% | $180.56M |
| Vanguard group | 3.11M | 4.23% | $128.41M |
| Baker bros. advisors lp | 2.83M | 3.81% | $136.08M |
| Tang capital management | 2.26M | 3.05% | $108.81M |
| Acadian asset management | 1.34M | 1.80% | $64.32M |
| Morgan stanley | 997.79K | 1.34% | $48.04M |
| D. e. shaw | 959.26K | 1.29% | $46.19M |
| Arrowstreet capital, limited partnership | 892.67K | 1.20% | $42.98M |
| Dimensional fund advisors lp | 811.92K | 1.09% | $39.09M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Tang capital management | 2.26M | 5.53% | $108.81M |
| Lion point capital, lp | 23.40K | 5.16% | $908.62K |
| Rubric capital management lp | 3.75M | 1.91% | $180.56M |
| Essex investment management | 249.28K | 1.90% | $12.00M |
| Rice hall james & associates | 608.42K | 1.63% | $29.30M |
| Parkman healthcare partners | 259.18K | 1.29% | $12.48M |
| Penn capital management company | 301.99K | 1.13% | $14.56M |
| Quantessence capital | 4.76K | 1.12% | $229.24K |
| Cannon global investment management | 11.00K | 1.03% | $529.65K |
| Soleus capital management | 521.35K | 1.02% | $25.10M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 6.82M | 0.02% | 5.18M |
| Balyasny asset management | 499.79K | 0.03% | 499.79K |
| Rubric capital management lp | 3.75M | 1.91% | 421.35K |
| Susquehanna group, llp | 383.81K | 0.00% | 340.91K |
| Janus henderson group | 481.02K | 0.01% | 327.60K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | - | - | -4.19M |
| Hhlr advisors | - | - | -1.58M |
| Fairmount funds management | - | - | -1.32M |
| Nuveen asset management | - | - | -831.10K |
| Goldman sachs group | 174.90K | 0.00% | -654.52K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Balyasny asset management | 499.79K | 0.03% | 499.79K | $24.06M |
| Penn capital management company | 301.99K | 1.13% | 301.99K | $14.56M |
| New york state common retirement fund | 209.62K | 0.01% | 209.62K | $10.09M |
| Adage capital partners gp | 59.00K | 0.00% | 59.00K | $2.29M |
| Brevan howard capital management lp | 53.88K | 0.02% | 53.88K | $2.59M |
Sold Out
| Holder | Change |
|---|---|
| Twin peaks wealth advisors | -1.00 |
| Clearstead advisors | -2.00 |
| Optima capital | -18.00 |
| Riggs asset managment | -30.00 |
| 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 % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 61 | -70.67% | 7,296,166 | -82.12% | 9 | 0.32% | 27 | -74.53% | 19 | -72.86% |
| Sep 30, 2025 | 71 | -62.83% | 6,310,956 | -84.11% | 8 | 0.29% | 41 | -63.06% | 20 | -67.74% |
| Jun 30, 2025 | 190 | 6.74% | 39,714,331 | 2.46% | 54 | 1.90% | 110 | 15.79% | 62 | 12.73% |
| 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 | - | - | - |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.25M | 1.72% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.29M | 1.69% | 27.96K |
| Pictet Biotech | 965.39K | 1.36% | 965.39K |
| iShares Russell 2000 ETF | 971.72K | 1.33% | - |
| Vanguard Small Cap Index | 955.02K | 1.25% | 32.48K |
| Fidelity Select Health Care | 800.00K | 1.04% | - |
| Fidelity Select Biotechnology | 637.60K | 0.83% | 370.10K |
| Vanguard Institutional Extnd Mkt Idx Tr | 567.21K | 0.80% | 795.00 |
| Fidelity Small Cap Growth | 581.26K | 0.76% | 18.22K |
| Strategic Advisers Fidelity US TtlStk | 561.98K | 0.73% | 39.00K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 01, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Sell | $1.14M |
| May 01, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Sell | $2.00M |
| May 01, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | $2.62M |
| Apr 28, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | $12.67M |
| Apr 28, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | $5.85M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 12 |
| 2026 Q1 | - | 12 |
| 2025 Q4 | - | 17 |
| 2025 Q3 | - | 19 |
| 2025 Q2 | - | 29 |
KNSA Ownership FAQ
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