KINIKSA PHARMACEUTICALS INTL KNSA
ORD SHS CL A · Common Stock · CUSIP G52694109
- SectorHealth care
- IndustryPharmaceutical Preparations
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($87.7k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $18.67. Options: 5 managers hold calls ($1.3m notional), 4 hold puts ($1.2m).
Trends to Q2 2024
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $0 | $0 | — |
| Q4 2023 | $0 | $0 | — |
| Q1 2024 | $0 | $0 | — |
| Q2 2024 | $1.3m | $1.2m | 0.93 |
Biggest buyers
| BlackRock Inc. | New | +4.6m |
| Fairmount Funds Management LLC | New | +3.2m |
| HHLR ADVISORS, LTD. | New | +3.1m |
| BAKER BROS. ADVISORS LP | New | +2.8m |
| Rubric Capital Management LP | New | +2.4m |
| BRAIDWELL LP | New | +2.1m |
| MORGAN STANLEY | New | +2.0m |
| STATE STREET CORP | New | +1.4m |
| Pictet Asset Management Holding SA | New | +1.3m |
| GEODE CAPITAL MANAGEMENT, LLC | New | +848.9k |
Biggest sellers
| None |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $1.2m62.2k shares |
| CITADEL ADVISORS LLC | New | $147.5k7.9k shares |
| SIMPLEX TRADING, LLC | New | $20.0k1.1k shares |
| GROUP ONE TRADING LLC | New | $13.1k700 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | New | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $1.2m65.9k shares |
| CITADEL ADVISORS LLC | New | $16.8k900 shares |
| GROUP ONE TRADING LLC | New | $1.9k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | New | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution +4.2 pts · filed 2026-05-06 | 14.8% |
| Rubric Capital Management LP 13G · institution -1.9 pts · filed 2026-02-13 | 7.4% |
BAKER BROS. ADVISORS LP
13D · may seek influence
filed 2026-05-26
Stated purposeItem 4 of Schedule 13D is supplemented and amended, as the case may be, as follows: On May 21, 2026, Kiniksa Pharmaceuticals International, plc (the "Issuer") and the Adviser on behalf of the Funds entered into a Deed of Waiver (the "Deed") according to which the Adviser on behalf of the Funds irrevocably and unconditionally waived the Funds' right to convert the Class A1 ordinary shares of the Issuer ("Class A1 ordinary shares") and Class B1 ordinary shares of the Issuer ("Class B1 ordinary shares") held by the Funds into Class A ordinary shares of the Issuer ("Class A ordinary shares") or Class B ordinary shares of the Issuer ("Class B ordinary shares") to the extent that, immediately prior to or following the exercise of such conversion, the Funds (together with their direct or indirec… Full filing |
7.0% |
| BlackRock, Inc. 13G · institution +4.5 pts · filed 2026-07-29 | 5.5% |
| TANG CAPITAL MANAGEMENT LLC 13G · passive investor new · filed 2025-04-04 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales in Q2 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 2 | $785.1k | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 1 | $562.2k | $7.0k |
| Q4 2023 | 0 | — | 2 | $683.0k | $683.0k |
| Q1 2024 | 0 | — | 5 | $3.3m | $3.3m |
| Q2 2024 | 0 | — | 0 | — | — |
None reported in Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 4.6m $85.7m | New |
| Fairmount Funds Management LLC 6.76% of their portfolio | 3.2m $59.8m | New |
| HHLR ADVISORS, LTD. 1.45% of their portfolio | 3.1m $58.7m | New |
| BAKER BROS. ADVISORS LP 0.67% of their portfolio | 2.8m $52.6m | New |
| Rubric Capital Management LP 1.19% of their portfolio | 2.4m $45.2m | New |
| BRAIDWELL LP 1.21% of their portfolio | 2.1m $38.4m | New |
| MORGAN STANLEY 0.00% of their portfolio | 2.0m $37.1m | New |
| STATE STREET CORP 0.00% of their portfolio | 1.4m $26.5m | New |
| Pictet Asset Management Holding SA 0.03% of their portfolio | 1.3m $24.3m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 848.9k $15.8m | New |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 766.4k $14.3m | New |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 664.0k $12.4m | New |
| Parkman Healthcare Partners LLC 1.65% of their portfolio | 647.1k $12.1m | New |
| TANG CAPITAL MANAGEMENT LLC 1.19% of their portfolio | 625.3k $11.7m | New |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 621.9k $11.6m | New |
| Driehaus Capital Management LLC 0.11% of their portfolio | 615.8k $11.5m | New |
| ArrowMark Colorado Holdings LLC 0.14% of their portfolio | 608.9k $11.4m | New |
| RICE HALL JAMES & ASSOCIATES, LLC 0.67% of their portfolio | 600.6k $11.2m | New |
| Granahan Investment Management, LLC 0.42% of their portfolio | 568.7k $10.6m | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 292.9k $5.5m | New |
| Hudson Bay Capital Management LP 0.04% of their portfolio | 255.0k $4.8m | New |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.13% of their portfolio | 239.2k $4.5m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.02% of their portfolio | 231.1k $4.3m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 214.8k $4.0m | New |
| Trexquant Investment LP 0.06% of their portfolio | 201.7k $3.8m | New |
| Soleus Capital Management, L.P. 0.33% of their portfolio | 200.0k $3.7m | New |
| ESSEX INVESTMENT MANAGEMENT CO LLC 0.70% of their portfolio | 199.8k $3.7m | New |
| Hennion & Walsh Asset Management, Inc. 0.17% of their portfolio | 182.0k $3.4m | New |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 169.6k $3.2m | New |
| Knights of Columbus Asset Advisors LLC 0.20% of their portfolio | 166.3k $3.1m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 147.9k $2.8m | New |
| HUSSMAN STRATEGIC ADVISORS, INC. 0.76% of their portfolio | 147.0k $2.7m | New |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 141.5k $2.6m | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 140.1k $2.6m | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 126.0k $2.4m | New |
| Linden Thomas Advisory Services, LLC 0.34% of their portfolio | 118.3k $2.2m | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 115.1k $2.1m | New |
| ADAR1 Capital Management, LLC 0.43% of their portfolio | 114.3k $2.1m | New |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.06% of their portfolio | 114.0k $2.1m | Not comparable |
| Lion Point Capital, LP 6.12% of their portfolio | 104.7k $2.0m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 92.4k $1.7m | New |
| HighVista Strategies LLC 0.60% of their portfolio | 88.7k $1.7m | New |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 88.4k $1.7m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 87.0k $1.6m | New |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 79.2k $1.5m | New |
| Swiss National Bank 0.00% of their portfolio | 78.6k $1.5m | New |
| SG Americas Securities, LLC 0.01% of their portfolio | 69.2k $1.3m | New |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio | 68.4k $1.3m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 67.0k $1.2m | New |
| Legato Capital Management LLC 0.17% of their portfolio | 66.9k $1.2m | New |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 66.4k $1.2m | New |
| Allspring Global Investments Holdings, LLC 0.00% of their portfolio | 64.9k $1.2m | New |
| Rafferty Asset Management, LLC 0.00% of their portfolio | 60.6k $1.1m | New |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 57.2k $1.1m | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 56.1k $1.0m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 54.8k $1.0m | New |
| Jackson Creek Investment Advisors LLC 0.37% of their portfolio | 54.3k $1.0m | New |
| MARTINGALE ASSET MANAGEMENT L P 0.02% of their portfolio | 45.4k $847.2k | New |
| Legal & General Group Plc 0.00% of their portfolio | 43.9k $820.0k | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 39.0k $727.7k | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 38.4k $716.7k | New |
| M&T Bank Corp 0.00% of their portfolio | 36.4k $679.6k | New |
| Advantage Alpha Capital Partners LP 0.13% of their portfolio | 31.3k $583.6k | New |
| STRS OHIO 0.00% of their portfolio | 30.6k $571.3k | New |
| Fisher Asset Management, LLC 0.00% of their portfolio | 30.2k $564.3k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 29.6k $553.3k | New |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 29.2k $545.6k | New |
| Y-Intercept (Hong Kong) Ltd 0.03% of their portfolio | 29.1k $543.2k | New |
| Janney Montgomery Scott LLC 0.00% of their portfolio | 28.2k $525.0k | New |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 25.8k $481.4k | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 24.8k $463.9k | New |
| BANTAMAC CAPITAL, LLC 0.24% of their portfolio | 21.9k $408.4k | New |
| ALGERT GLOBAL LLC 0.01% of their portfolio | 18.6k $347.3k | New |
| VIRTUS ADVISERS, LLC 0.16% of their portfolio | 17.6k $327.8k | New |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 17.3k $323.8k | New |
| XTX Topco Ltd 0.03% of their portfolio | 16.8k $314.2k | New |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 16.6k $309.7k | New |
| Corebridge Financial, Inc. 0.00% of their portfolio | 16.4k $305.7k | First filing |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 16.3k $303.8k | First filing |
| Robeco Institutional Asset Management B.V. 0.00% of their portfolio | 16.0k $298.4k | New |
| Nebula Research & Development LLC 0.05% of their portfolio | 15.1k $281.4k | New |
| PERSONAL CFO SOLUTIONS, LLC 0.04% of their portfolio | 14.2k $265.8k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 14.1k $263.9k | New |
| QRG CAPITAL MANAGEMENT, INC. 0.00% of their portfolio | 14.0k $261.9k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 12.8k $238.5k | New |
| Engineers Gate Manager LP 0.01% of their portfolio | 12.6k $234.7k | New |
| Campbell & CO Investment Adviser LLC 0.02% of their portfolio | 12.5k $233.6k | New |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 12.2k $227.5k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 12.2k $227.2k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 11.9k $222.0k | New |
| SHERBROOKE PARK ADVISERS LLC 0.04% of their portfolio | 11.7k $219.1k | New |
| PROFUND ADVISORS LLC 0.01% of their portfolio | 11.5k $214.8k | New |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 11.2k $209.0k | New |
| Jump Financial, LLC 0.00% of their portfolio | 11.2k $208.4k | New |
| HRT FINANCIAL LP 0.00% of their portfolio | 11.1k $206.0k | New |
| Aquatic Capital Management LLC 0.01% of their portfolio | 11.0k $205.4k | New |
| Sound View Wealth Advisors Group, LLC 0.02% of their portfolio | 10.6k $198.7k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 10.6k $198.1k | New |
| EntryPoint Capital, LLC 0.09% of their portfolio | 10.1k $188.1k | New |
| Lynx1 Capital Management LP 0.06% of their portfolio | 9.5k $177.4k | New |