Kiniksa Pharmaceuticals International, plc
KNSA- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001730430
In the last 90 days, Kiniksa Pharmaceuticals International, plc insiders filed 0 open-market purchases and 2 sales; 267 institutions reported holding it in 13F filings for Q2 2026, worth $2.99B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Kiniksa Pharmaceuticals International, plc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 224
- +24 vs. Q3 2025
- Shares held
- 43.0M
- +2.55M (+6.3%) vs. Q3 2025
- Total value
- $1.77B
- +$202.9M (+12.9%) vs. Q3 2025
- New holders
- 42
- 79 more added
- Sold out
- 18
- 70 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting KNSA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 267 | $2.99B |
| Q1 2026 | 228 | $2.18B |
| Q4 2025 | 224 | $1.77B |
| Q3 2025 | 204 | $1.59B |
| Q2 2025 | 189 | $1.10B |
| Q1 2025 | 176 | $889.4M |
| Q4 2024 | 160 | $773.1M |
| Q3 2024 | 176 | $991.2M |
| Q2 2024 | 133 | $659.4M |
| Q1 2024 | 154 | $768.1M |
| Q4 2023 | 142 | $600.4M |
| Q3 2023 | 134 | $605.8M |
| Q2 2023 | 127 | $447.7M |
| Q1 2023 | 132 | $339.6M |
| Q4 2022 | 125 | $450.0M |
| Q3 2022 | 104 | $383.2M |
| Q2 2022 | 92 | $290.5M |
| Q1 2022 | 96 | $306.0M |
| Q4 2021 | 103 | $346.4M |
| Q3 2021 | 101 | $332.0M |
| Q2 2021 | 102 | $402.0M |
| Q1 2021 | 105 | $537.6M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Kiniksa Pharmaceuticals International, plc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rubric Capital Management LP | 3,328,653 | $137.3M | 1.64% | −671,347−16.8% | Reduced |
| Vanguard Group Inc | 3,112,937 | $128.4M | 0.00% | +49,802+1.6% | Added |
| Baker Bros. Advisors LP | 2,826,246 | $116.6M | 0.68% | +1,577+0.1% | Added |
| Tang Capital Management LLC | 2,259,889 | $93.2M | 4.60% | −68,720−3.0% | Reduced |
| Acadian Asset Management LLC | 1,713,043 | $70.6M | 0.12% | +94,522+5.8% | Added |
| FMR LLC | 1,642,863 | $67.8M | 0.00% | +843,108+105.4% | Added |
| Morgan Stanley | 1,360,044 | $56.1M | 0.00% | −2,879−0.2% | Reduced |
| Fairmount Funds Management LLC | 1,319,688 | $54.4M | 4.14% | −453,151−25.6% | Reduced |
| D. E. Shaw & Co., Inc. | 1,241,621 | $51.2M | 0.04% | +107,435+9.5% | Added |
| Arrowstreet Capital, Limited Partnership | 1,068,216 | $44.1M | 0.03% | −470.0% | Reduced |
| BNP Paribas Arbitrage, SA | 831,777 | $34.3M | 0.02% | +178,366+27.3% | Added |
| Goldman Sachs Group Inc | 829,417 | $34.2M | 0.00% | +282,907+51.8% | Added |
| Millennium Management LLC | 825,285 | $34.0M | 0.02% | −188,840−18.6% | Reduced |
| Point72 Asset Management, L.P. | 797,137 | $32.9M | 0.05% | +230,210+40.6% | Added |
| Pictet Asset Management Holding SA | 787,520 | $32.5M | 0.03% | −144,576−15.5% | Reduced |
| Qube Research & Technologies Ltd | 766,291 | $31.6M | 0.05% | +76,403+11.1% | Added |
| Citadel Advisors LLC | 742,118 | $30.6M | 0.02% | +427,562+135.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 739,326 | $30.5M | 0.08% | +13,971+1.9% | Added |
| Dimensional Fund Advisors LP | 683,505 | $28.2M | 0.01% | +51,382+8.1% | Added |
| Parkman Healthcare Partners LLC | 665,208 | $27.4M | 2.61% | −6,384−1.0% | Reduced |
| Driehaus Capital Management LLC | 632,827 | $26.1M | 0.18% | −21,758−3.3% | Reduced |
| Deutsche Bank AG | 630,291 | $26.0M | 0.01% | +96,916+18.2% | Added |
| Rice Hall James & Associates, LLC | 596,431 | $24.6M | 1.35% | +18,609+3.2% | Added |
| Soleus Capital Management, L.P. | 587,000 | $24.2M | 1.03% | +437,000+291.3% | Added |
| SG Americas Securities, LLC | 541,396 | $22.3M | 0.03% | +402,078+288.6% | Added |
| Two Sigma Investments, LP | 530,496 | $21.9M | 0.03% | +68,726+14.9% | Added |
| Victory Capital Management Inc | 512,163 | $21.1M | 0.01% | +512,163 | New |
| BlackRock, Inc. | 446,603 | $18.4M | 0.00% | −11,044−2.4% | Reduced |
| Spruce Street Capital LP | 434,982 | $17.9M | 5.93% | +434,982 | New |
| Massachusetts Financial Services Co | 425,232 | $17.5M | 0.01% | −33,072−7.2% | Reduced |
| Nomura Holdings Inc | 412,639 | $17.0M | 0.05% | +15,500+3.9% | Added |
| Standard Life Aberdeen plc | 400,598 | $16.5M | 0.03% | +241,876+152.4% | Added |
| AQR Capital Management LLC | 353,062 | $14.6M | 0.01% | +20,645+6.2% | Added |
| Logos Global Management LP | 350,000 | $14.4M | 0.96% | +350,000 | New |
| ArrowMark Colorado Holdings LLC | 333,702 | $13.8M | 0.30% | −6,925−2.0% | Reduced |
| Alliancebernstein L.P. | 328,274 | $13.5M | 0.00% | +328,274 | New |
| Granahan Investment Management Inc | 316,213 | $13.0M | 0.56% | +32,642+11.5% | Added |
| Braidwell LP | 313,823 | $12.9M | 0.41% | −329,357−51.2% | Reduced |
| Oberweis Asset Management Inc | 312,800 | $12.9M | 0.47% | +7,600+2.5% | Added |
| Fisher Asset Management, LLC | 267,274 | $11.0M | 0.00% | −15,014−5.3% | Reduced |
| Essex Investment Management Co LLC | 250,975 | $10.4M | 1.58% | +3,674+1.5% | Added |
| Jane Street Group, LLC | 242,430 | $10.0M | 0.01% | −218,958−47.5% | Reduced |
| Bank of America Corp | 229,364 | $9.46M | 0.00% | −266,119−53.7% | Reduced |
| Voloridge Investment Management, LLC | 228,933 | $9.44M | 0.03% | −69,414−23.3% | Reduced |
| Trexquant Investment LP | 225,128 | $9.29M | 0.08% | −134,710−37.4% | Reduced |
| Hillsdale Investment Management Inc. | 224,074 | $9.24M | 0.26% | −1,300−0.6% | Reduced |
| SEI Investments Co | 217,496 | $8.97M | 0.01% | +46,327+27.1% | Added |
| Peregrine Capital Management LLC | 210,910 | $8.70M | 0.27% | −3,454−1.6% | Reduced |
| Two Sigma Advisers, LP | 208,300 | $8.59M | 0.02% | +31,200+17.6% | Added |
| Castleark Management LLC | 192,192 | $7.93M | 0.23% | +33,560+21.2% | Added |
| OrbiMed Advisors LLC | 187,199 | $7.72M | 0.16% | +187,199 | New |
| Rockefeller Capital Management L.P. | 173,438 | $7.15M | 0.01% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 153,428 | $6.33M | 0.00% | +141,249+1,159.8% | Added |
| Voleon Capital Management LP | 151,283 | $6.24M | 0.13% | +62,117+69.7% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 148,774 | $6.14M | 0.01% | +27,374+22.5% | Added |
| Walleye Capital LLC | 143,293 | $5.91M | 0.03% | −269,793−65.3% | Reduced |
| Lazard Asset Management LLC | 140,301 | $5.79M | 0.01% | +1,989+1.4% | Added |
| Silvercrest Asset Management Group LLC | 126,409 | $5.21M | 0.04% | +149+0.1% | Added |
| Linden Thomas Advisory Services, LLC | 114,462 | $4.72M | 0.48% | −1,578−1.4% | Reduced |
| Nordea Investment Management AB | 110,682 | $4.54M | 0.00% | −20,392−15.6% | Reduced |
| PDT Partners, LLC | 101,622 | $4.19M | 0.27% | 00.0% | Unchanged |
| EAM Investors, LLC | 96,018 | $3.96M | 0.44% | −1,921−2.0% | Reduced |
| Atika Capital Management LLC | 93,970 | $3.88M | 0.54% | +93,970 | New |
| Globeflex Capital L P | 93,396 | $3.85M | 0.59% | 00.0% | Unchanged |
| Jump Financial, LLC | 91,429 | $3.77M | 0.05% | −21,506−19.0% | Reduced |
| Squarepoint Ops LLC | 85,182 | $3.51M | 0.01% | −160.0% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 79,200 | $3.27M | 0.11% | −42,619−35.0% | Reduced |
| UBS Group AG | 77,916 | $3.21M | 0.00% | +28,099+56.4% | Added |
| State Street Corp | 73,002 | $3.01M | 0.00% | −2,048−2.7% | Reduced |
| Gsa Capital Partners LLP | 68,994 | $2.85M | 0.25% | −8,990−11.5% | Reduced |
| Swiss National Bank | 68,600 | $2.83M | 0.00% | +2,900+4.4% | Added |
| Schonfeld Strategic Advisors LLC | 63,995 | $2.64M | 0.01% | −19,886−23.7% | Reduced |
| Charles Schwab Investment Management Inc | 63,530 | $2.62M | 0.00% | −1,582−2.4% | Reduced |
| Legato Capital Management LLC | 63,137 | $2.60M | 0.22% | +5,496+9.5% | Added |
| Northern Trust Corp | 60,297 | $2.49M | 0.00% | +7,890+15.1% | Added |
| Susquehanna Fundamental Investments, LLC | 60,125 | $2.48M | 0.08% | 00.0% | Unchanged |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 58,692 | $2.42M | 0.00% | −1,652−2.7% | Reduced |
| Wells Fargo & Company | 54,393 | $2.24M | 0.00% | +46,725+609.4% | Added |
| Raymond James Financial Inc | 49,192 | $2.02M | 0.00% | −29,887−37.8% | Reduced |
| SummitTX Capital, L.P. | 48,808 | $2.01M | 0.06% | +48,808 | New |
| JPMorgan Chase & Co | 48,397 | $2.00M | 0.00% | −144,059−74.9% | Reduced |
| Ieq Capital, LLC | 47,841 | $1.97M | 0.01% | +1,854+4.0% | Added |
| Geode Capital Management, LLC | 45,783 | $1.89M | 0.00% | +221+0.5% | Added |
| Cerity Partners LLC | 43,219 | $1.78M | 0.00% | +183+0.4% | Added |
| Ami Asset Management Corp | 43,116 | $1.78M | 0.10% | +90.0% | Added |
| Susquehanna International Group, LLP | 42,897 | $1.77M | 0.00% | +35,958+518.2% | Added |
| UBS Asset Management Americas Inc | 42,402 | $1.75M | 0.00% | −13,117−23.6% | Reduced |
| Baird Financial Group, Inc. | 42,237 | $1.74M | 0.00% | −13,075−23.6% | Reduced |
| Manufacturers Life Insurance Company, The | 40,429 | $1.66M | 0.00% | +40,429 | New |
| Engineers Gate Manager LP | 39,873 | $1.64M | 0.02% | −47,591−54.4% | Reduced |
| Man Group plc | 39,447 | $1.63M | 0.00% | −28,458−41.9% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 35,889 | $1.48M | 0.03% | +29,494+461.2% | Added |
| OpenArc Corporate Advisory, LLC | 33,862 | $1.40M | 0.02% | +33,862 | New |
| Invesco Ltd. | 32,334 | $1.33M | 0.00% | +6,656+25.9% | Added |
| Ameriprise Financial Inc | 32,116 | $1.32M | 0.00% | −1,430−4.3% | Reduced |
| Jain Global LLC | 31,806 | $1.31M | 0.01% | +10,879+52.0% | Added |
| California State Teachers Retirement System | 31,498 | $1.30M | 0.00% | 00.0% | Unchanged |
| Artia Global Partners LP | 29,200 | $1.20M | 0.19% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 28,955 | $1.19M | 0.00% | +28,955 | New |
| ADAR1 Capital Management, LLC | 28,728 | $1.19M | 0.09% | −46,459−61.8% | Reduced |