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, Q1 2026
Institutional positions in Kiniksa Pharmaceuticals International, plc as of Mar 31, 2026. 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
- 228
- +7 vs. Q4 2025
- Shares held
- 45.4M
- +5.56M (+13.9%) vs. Q4 2025
- Total value
- $2.18B
- +$538.6M (+32.8%) vs. Q4 2025
- New holders
- 41
- 76 more added
- Sold out
- 34
- 85 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Kiniksa Pharmaceuticals International, plc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 6,823,700 | $328.6M | 0.02% | +5,180,837+315.4% | Added |
| Rubric Capital Management LP | 3,750,000 | $180.6M | 2.21% | +421,347+12.7% | Added |
| Baker Bros. Advisors LP | 2,826,246 | $136.1M | 0.78% | 00.0% | Unchanged |
| Tang Capital Management LLC | 2,259,889 | $108.8M | 5.53% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 1,766,268 | $85.0M | 0.00% | +1,766,268 | New |
| Acadian Asset Management LLC | 1,336,313 | $64.3M | 0.09% | −376,730−22.0% | Reduced |
| Vanguard Capital Management LLC | 1,333,093 | $64.2M | 0.00% | +1,333,093 | New |
| Morgan Stanley | 997,786 | $48.0M | 0.00% | −362,258−26.6% | Reduced |
| D. E. Shaw & Co., Inc. | 959,257 | $46.2M | 0.04% | −282,364−22.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 892,666 | $43.0M | 0.02% | −175,550−16.4% | Reduced |
| Dimensional Fund Advisors LP | 811,922 | $39.1M | 0.01% | +128,417+18.8% | Added |
| Spruce Street Capital LP | 761,063 | $36.6M | 8.81% | +326,081+75.0% | Added |
| Bank of America Corp | 735,940 | $35.4M | 0.00% | +506,576+220.9% | Added |
| Qube Research & Technologies Ltd | 686,853 | $33.1M | 0.05% | −79,438−10.4% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 649,629 | $31.3M | 0.07% | −89,697−12.1% | Reduced |
| BNP Paribas Arbitrage, SA | 647,731 | $31.2M | 0.02% | −184,046−22.1% | Reduced |
| Point72 Asset Management, L.P. | 640,958 | $30.9M | 0.05% | −156,179−19.6% | Reduced |
| SG Americas Securities, LLC | 640,179 | $30.8M | 0.03% | +98,783+18.2% | Added |
| Pictet Asset Management Holding SA | 623,288 | $30.0M | 0.03% | −164,232−20.9% | Reduced |
| Driehaus Capital Management LLC | 611,398 | $29.4M | 0.22% | −21,429−3.4% | Reduced |
| Rice Hall James & Associates, LLC | 608,416 | $29.3M | 1.63% | +11,985+2.0% | Added |
| Millennium Management LLC | 564,420 | $27.2M | 0.02% | −260,865−31.6% | Reduced |
| Deutsche Bank AG | 523,691 | $25.2M | 0.01% | −106,600−16.9% | Reduced |
| Soleus Capital Management, L.P. | 521,353 | $25.1M | 1.02% | −65,647−11.2% | Reduced |
| Alliancebernstein L.P. | 598,888 | $24.7M | 0.01% | +270,614+82.4% | Added |
| Victory Capital Management Inc | 506,521 | $24.4M | 0.02% | −5,642−1.1% | Reduced |
| Balyasny Asset Management LLC | 499,792 | $24.1M | 0.05% | +499,792 | New |
| BlackRock, Inc. | 486,737 | $23.4M | 0.00% | +40,134+9.0% | Added |
| Janus Henderson Group PLC | 481,023 | $23.2M | 0.01% | +327,595+213.5% | Added |
| Citadel Advisors LLC | 474,750 | $22.9M | 0.02% | −267,368−36.0% | Reduced |
| Massachusetts Financial Services Co | 438,002 | $21.1M | 0.01% | +12,770+3.0% | Added |
| Fisher Asset Management, LLC | 428,972 | $20.7M | 0.01% | +161,698+60.5% | Added |
| Two Sigma Investments, LP | 420,914 | $20.3M | 0.02% | −109,582−20.7% | Reduced |
| Susquehanna International Group, LLP | 383,811 | $18.5M | 0.02% | +340,914+794.7% | Added |
| AQR Capital Management LLC | 378,697 | $18.2M | 0.01% | +25,635+7.3% | Added |
| Standard Life Aberdeen plc | 373,634 | $18.0M | 0.03% | −26,964−6.7% | Reduced |
| Nomura Holdings Inc | 342,939 | $16.5M | 0.14% | −69,700−16.9% | Reduced |
| Oberweis Asset Management Inc | 318,634 | $15.3M | 0.45% | +5,834+1.9% | Added |
| ArrowMark Colorado Holdings LLC | 316,956 | $15.3M | 0.41% | −16,746−5.0% | Reduced |
| Marshall Wace, LLP | 305,371 | $14.7M | 0.02% | +299,571+5,165.0% | Added |
| Penn Capital Management Co Inc | 301,993 | $14.6M | 1.13% | +301,993 | New |
| SEI Investments Co | 284,005 | $13.7M | 0.01% | +66,509+30.6% | Added |
| Braidwell LP | 272,522 | $13.1M | 0.44% | −41,301−13.2% | Reduced |
| Parkman Healthcare Partners LLC | 259,184 | $12.5M | 1.29% | −406,024−61.0% | Reduced |
| Essex Investment Management Co LLC | 249,278 | $12.0M | 1.90% | −1,697−0.7% | Reduced |
| New York State Common Retirement Fund | 209,617 | $10.1M | 0.01% | +209,617 | New |
| Granahan Investment Management Inc | 209,256 | $10.1M | 0.49% | −106,957−33.8% | Reduced |
| Castleark Management LLC | 181,512 | $8.74M | 0.29% | −10,680−5.6% | Reduced |
| Peregrine Capital Management LLC | 181,360 | $8.73M | 0.32% | −29,550−14.0% | Reduced |
| OrbiMed Advisors LLC | 180,599 | $8.70M | 0.20% | −6,600−3.5% | Reduced |
| Goldman Sachs Group Inc | 174,901 | $8.42M | 0.00% | −654,516−78.9% | Reduced |
| Rockefeller Capital Management L.P. | 173,438 | $8.35M | 0.01% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 158,093 | $7.61M | 0.02% | +72,911+85.6% | Added |
| Trexquant Investment LP | 135,280 | $6.51M | 0.05% | −89,848−39.9% | Reduced |
| Voloridge Investment Management, LLC | 134,516 | $6.48M | 0.03% | −94,417−41.2% | Reduced |
| Man Group plc | 127,186 | $6.12M | 0.01% | +87,739+222.4% | Added |
| Linden Thomas Advisory Services, LLC | 121,777 | $5.86M | 0.56% | +7,315+6.4% | Added |
| Voleon Capital Management LP | 120,385 | $5.80M | 0.12% | −30,898−20.4% | Reduced |
| Silvercrest Asset Management Group LLC | 114,289 | $5.50M | 0.04% | −12,120−9.6% | Reduced |
| Nordea Investment Management AB | 106,635 | $5.12M | 0.00% | −4,047−3.7% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 104,654 | $5.04M | 0.01% | +45,962+78.3% | Added |
| JPMorgan Chase & Co | 107,017 | $4.89M | 0.00% | +58,620+121.1% | Added |
| Globeflex Capital L P | 93,396 | $4.50M | 0.68% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 88,600 | $4.27M | 0.01% | −60,174−40.4% | Reduced |
| PDT Partners, LLC | 80,263 | $3.86M | 0.23% | −21,359−21.0% | Reduced |
| State Street Corp | 76,633 | $3.69M | 0.00% | +3,631+5.0% | Added |
| Swiss National Bank | 71,500 | $3.44M | 0.00% | +2,900+4.2% | Added |
| Legato Capital Management LLC | 70,805 | $3.41M | 0.31% | +7,668+12.1% | Added |
| UBS Group AG | 69,700 | $3.36M | 0.00% | −8,216−10.5% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 67,341 | $3.24M | 0.11% | −11,859−15.0% | Reduced |
| Manufacturers Life Insurance Company, The | 63,346 | $3.05M | 0.00% | +22,917+56.7% | Added |
| EAM Investors, LLC | 56,494 | $2.72M | 0.31% | −39,524−41.2% | Reduced |
| Brevan Howard Capital Management LP | 53,882 | $2.59M | 0.03% | +53,882 | New |
| Penserra Capital Management LLC | 53,102 | $2.56M | 0.03% | +53,102 | New |
| ExodusPoint Capital Management, LP | 52,303 | $2.52M | 0.03% | +44,345+557.2% | Added |
| Fieldview Capital Management, LLC | 51,072 | $2.46M | 0.72% | +51,072 | New |
| Charles Schwab Investment Management Inc | 50,299 | $2.42M | 0.00% | −13,231−20.8% | Reduced |
| OpenArc Corporate Advisory, LLC | 48,353 | $2.33M | 0.03% | +14,491+42.8% | Added |
| UBS Asset Management Americas Inc | 44,525 | $2.14M | 0.00% | +2,123+5.0% | Added |
| Geode Capital Management, LLC | 44,320 | $2.13M | 0.00% | −1,463−3.2% | Reduced |
| Cerity Partners LLC | 43,712 | $2.10M | 0.00% | +493+1.1% | Added |
| Schonfeld Strategic Advisors LLC | 43,599 | $2.10M | 0.02% | −20,396−31.9% | Reduced |
| Jain Global LLC | 43,027 | $2.07M | 0.03% | +11,221+35.3% | Added |
| Ieq Capital, LLC | 42,950 | $2.07M | 0.01% | −4,891−10.2% | Reduced |
| California State Teachers Retirement System | 41,975 | $2.02M | 0.00% | +10,477+33.3% | Added |
| Baird Financial Group, Inc. | 40,249 | $1.94M | 0.00% | −1,988−4.7% | Reduced |
| Jump Financial, LLC | 39,735 | $1.91M | 0.03% | −51,694−56.5% | Reduced |
| Northern Trust Corp | 36,924 | $1.78M | 0.00% | −23,373−38.8% | Reduced |
| CWM Advisors, LLC | 35,271 | $1.70M | 0.10% | +35,271 | New |
| Barclays PLC | 34,152 | $1.64M | 0.00% | +29,575+646.2% | Added |
| Citigroup Inc | 33,714 | $1.62M | 0.00% | +32,021+1,891.4% | Added |
| Vanguard Fiduciary Trust Co | 32,096 | $1.55M | 0.00% | +32,096 | New |
| Stifel Financial Corp | 31,951 | $1.54M | 0.00% | +31,951 | New |
| Ameriprise Financial Inc | 31,755 | $1.53M | 0.00% | −361−1.1% | Reduced |
| Lisanti Capital Growth, LLC | 31,065 | $1.50M | 0.38% | +31,065 | New |
| Raymond James Financial Inc | 31,089 | $1.43M | 0.00% | −18,103−36.8% | Reduced |
| Artia Global Partners LP | 29,200 | $1.41M | 0.32% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 28,955 | $1.39M | 0.00% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 27,670 | $1.33M | 0.01% | +27,670 | New |
| Invesco Ltd. | 27,656 | $1.33M | 0.00% | −4,678−14.5% | Reduced |