Kiniksa Pharmaceuticals International, plc: which funds bought and sold
Institutions that bought and sold Kiniksa Pharmaceuticals International shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 153 institutions that filed 13F reports for both quarters added to or opened positions in Kiniksa Pharmaceuticals International, and 106 cut or closed them. Together they added a net 1.5M shares, +3.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 2.7M shares (−9.6%); index fund managers were net buyers of 4.0M shares (+105.5%). 68 opened a new position and 26 sold out entirely.
Bought, Q2 2026 153 institutions, 68 of them new holders Sold, Q2 2026 106 institutions, 26 of them sold out
Net change, all compared +1.5M shares (+3.3%)
Net change, active managers −2.7M shares (−9.6%), 21 bought, 28 sold
Buyers versus sellers
153 bought 28 106 sold
Active managers and hedge funds 21 bought · 28 sold · −2.7M
Index fund managers 11 bought · 0 sold · +4.0M
Other institutions 121 bought · 78 sold · +89K
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Blackrock, Inc. Index funds | +2.3M +462.9% | 2.7M | $175M |
| Invesco Ltd. | +745K +2694.4% | 773K | $49.4M |
| State Street Corp Index funds | +628K +818.9% | 704K | $45M |
| Geode Capital Management, LLC Index funds | +560K +1263.2% | 604K | $38.6M |
| Northern Trust Corp Index funds | +278K +753.8% | 315K | $20.2M |
| Rubric Capital Management LP Hedge fund | +250K +6.7% | 4.0M | $256M |
| Orbimed Advisors LLC | +240K +132.9% | 421K | $26.9M |
| Bank Of New York Mellon Corp | +215K +1237.3% | 233K | $14.9M |
| Stempoint Capital LP | +209K New position | 209K | $13.4M |
| Spruce Street Capital LP | +157K +20.6% | 918K | $58.7M |
| FMR LLC Active manager | +148K +2.2% | 7.0M | $446M |
| Vanguard Portfolio Management LLC Index funds | +145K +8.2% | 1.9M | $122M |
| Two Sigma Investments, LP Hedge fund | +141K +33.4% | 561K | $35.9M |
| Driehaus Capital Management LLC Active manager | +107K +17.5% | 718K | $45.9M |
| Nuveen, LLC | +100K +372.2% | 127K | $8.1M |
| Oberweis Asset Management Inc/ Active manager | +94K +29.6% | 413K | $26.4M |
| Segall Bryant & Hamill, LLC Active manager | +72K New position | 72K | $4.6M |
| Renaissance Technologies LLC Hedge fund | +68K New position | 68K | $4.4M |
| Penn Capital Management Company, LLC Active manager | +66K +21.9% | 368K | $23.6M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +65K +7.3% | 958K | $61.2M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Rubric Capital Management LP Hedge fund | +250K +6.7% | 4.0M | $256M |
| FMR LLC Active manager | +148K +2.2% | 7.0M | $446M |
| Two Sigma Investments, LP Hedge fund | +141K +33.4% | 561K | $35.9M |
| Driehaus Capital Management LLC Active manager | +107K +17.5% | 718K | $45.9M |
| Oberweis Asset Management Inc/ Active manager | +94K +29.6% | 413K | $26.4M |
| Segall Bryant & Hamill, LLC Active manager | +72K New position | 72K | $4.6M |
| Renaissance Technologies LLC Hedge fund | +68K New position | 68K | $4.4M |
| Penn Capital Management Company, LLC Active manager | +66K +21.9% | 368K | $23.6M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +65K +7.3% | 958K | $61.2M |
| American Century Companies Inc Active manager | +49K +672.5% | 56K | $3.6M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Acadian Asset Management LLC Active manager | −657K −49.2% | 679K | $43.4M |
| Millennium Management LLC Hedge fund | −471K −83.5% | 93K | $6M |
| Citadel Advisors LLC Hedge fund | −433K −91.2% | 42K | $2.7M |
| D. E. Shaw & Co., Inc. Hedge fund | −390K −40.6% | 570K | $36.4M |
| Qube Research & Technologies Ltd Hedge fund | −383K −55.7% | 304K | $19.4M |
| Susquehanna International Group, LLP | −366K −95.3% | 18K | $1.2M |
| Bank Of America Corp | −323K −43.8% | 413K | $26.4M |
| Marshall Wace, LLP Hedge fund | −305K Sold out | 0 | — |
| Soleus Capital Management, L.P. Hedge fund | −275K −52.7% | 246K | $15.8M |
| Parkman Healthcare Partners LLC | −259K Sold out | 0 | — |
| BNP Paribas Financial Markets | −211K −32.5% | 437K | $28M |
| Balyasny Asset Management L.P. Hedge fund | −190K −38.0% | 310K | $19.8M |
| SG Americas Securities, LLC | −136K −21.3% | 504K | $32.2M |
| Deutsche Bank Ag\ | −136K −26.0% | 388K | $24.8M |
| Voloridge Investment Management, LLC Hedge fund | −135K Sold out | 0 | — |
| Arrowmark Colorado Holdings LLC | −101K −32.0% | 216K | $13.8M |
| Sei Investments Co | −95K −33.6% | 189K | $12.1M |
| Braidwell LP Hedge fund | −89K −32.5% | 184K | $11.8M |
| Voleon Capital Management LP Hedge fund | −88K −72.7% | 33K | $2.1M |
| Man Group PLC Hedge fund | −87K −68.1% | 41K | $2.6M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Acadian Asset Management LLC Active manager | −657K −49.2% | 679K | $43.4M |
| Millennium Management LLC Hedge fund | −471K −83.5% | 93K | $6M |
| Citadel Advisors LLC Hedge fund | −433K −91.2% | 42K | $2.7M |
| D. E. Shaw & Co., Inc. Hedge fund | −390K −40.6% | 570K | $36.4M |
| Qube Research & Technologies Ltd Hedge fund | −383K −55.7% | 304K | $19.4M |
| Marshall Wace, LLP Hedge fund | −305K Sold out | 0 | — |
| Soleus Capital Management, L.P. Hedge fund | −275K −52.7% | 246K | $15.8M |
| Balyasny Asset Management L.P. Hedge fund | −190K −38.0% | 310K | $19.8M |
| Voloridge Investment Management, LLC Hedge fund | −135K Sold out | 0 | — |
| Braidwell LP Hedge fund | −89K −32.5% | 184K | $11.8M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Stempoint Capital LP | 209K | $13.4M |
| Segall Bryant & Hamill, LLCActive manager | 72K | $4.6M |
| Renaissance Technologies LLCHedge fund | 68K | $4.4M |
| Truist Financial Corp | 52K | $3.3M |
| Mutual Of America Capital Management LLC | 42K | $2.7M |
| Price T Rowe Associates IncActive manager | 35K | $2.2M |
| Timothy G. Youngquist 2020 Irrevocable Trust | 34K | $2.2M |
| Financial Enhancement Group LLC | 31K | $2M |
| Caption Management, LLC | 25K | $1.6M |
| Metlife Investment Management, LLC | 25K | $1.6M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Marshall Wace, LLPHedge fund | 305K | $14.7M |
| Parkman Healthcare Partners LLC | 259K | $12.5M |
| Voloridge Investment Management, LLCHedge fund | 135K | $6.5M |
| Hennion & Walsh Asset Management, Inc. | 67K | $3.2M |
| Fieldview Capital Management, LLC | 51K | $2.5M |
| Openarc Corporate Advisory, LLC | 48K | $2.3M |
| Schonfeld Strategic Advisors LLCHedge fund | 44K | $2.1M |
| Jain Global LLCHedge fund | 43K | $2.1M |
| Jump Financial, LLC | 40K | $1.9M |
| Inspire Investing, LLC | 35K | $1.7M |
Who holds the shares
- Institutions reporting
- 264
- Ten largest holders
- 53.3% of 13F-reported shares
- Index fund managers
- 16.8% of 13F-reported shares
- Active managers and hedge funds
- 53.8% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 21 | 28 | 8 | 5 | −2.7M | −9.6% |
| Index fund managers | 11 | 0 | 2 | 0 | +4.0M | +105.5% |
| Other institutions | 121 | 78 | 58 | 21 | +89K | +0.7% |
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