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KNSA

Kiniksa Pharmaceuticals International, plc
$61.69 -0.29 (-0.47%) At close · Jul 15
Market Cap
$9.33B
Shares
153,876,032

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 233
Total Value: $2,155,064,190
Total Shares: 44,718,603
Showing 1–100 of 238 holdings by value · page 1 of 3

Institutional Ownership Trend

9 quarters

Superinvestors Holding KNSA

All superinvestors →
Joel Greenblatt $364,688

Holder Concentration

Across 229 13F filers
Top Holder
15.3%
Jun 2024 → Mar 2026 · range 7.5% – 15.3%
of institutional value
Top 5
38.0%
Jun 2024 → Mar 2026 · range 29.7% – 45.7%
of institutional value
Top 10
49.6%
Jun 2024 → Mar 2026 · range 45.5% – 67.3%
of institutional value
HHI
454
Jun 2024 → Mar 2026 · range 296 – 576
Broadly held
Showing 100 of 238
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega FMR LLC $328,561,152 15.25% 6,823,700
Mid Rubric Capital Management LP $180,562,500 8.38% 3,750,000
Large BAKER BROS. ADVISORS LP $136,083,744 6.31% 2,826,246
Mid TANG CAPITAL MANAGEMENT LLC $108,813,655 5.05% 2,259,889
Large ACADIAN ASSET MANAGEMENT LLC $64,343,470 2.99% 1,336,313
Mega VANGUARD CAPITAL MANAGEMENT LLC $64,188,427 2.98% 1,333,093
Large Caption Management, LLC $48,121,110 2.23% 999,400
Mega MORGAN STANLEY $48,043,392 2.23% 997,786
Mega D. E. Shaw & Co., Inc. $46,188,223 2.14% 959,257
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $42,981,867 1.99% 892,666
Mega DIMENSIONAL FUND ADVISORS LP $39,094,042 1.81% 811,922
Small Spruce Street Capital LP $36,645,183 1.70% 761,063
Mega BANK OF AMERICA CORP /DE/ Bank $35,435,509 1.64% 735,940
Large Qube Research & Technologies Ltd $33,071,971 1.53% 686,853
Large Connor, Clark & Lunn Investment Management Ltd. $31,279,636 1.45% 649,629
Mega BNP PARIBAS ARBITRAGE, SA $31,188,247 1.45% 647,731
Large Point72 Asset Management, L.P. $30,862,127 1.43% 640,958
Large SG Americas Securities, LLC Broker-Dealer $30,824,618 1.43% 640,179
Large Pictet Asset Management Holding SA $30,011,317 1.39% 623,288
Large Driehaus Capital Management LLC $29,438,813 1.37% 611,398
Mid RICE HALL JAMES & ASSOCIATES, LLC $29,295,230 1.36% 608,416
Mega ALLIANCEBERNSTEIN L.P. $28,836,457 1.34% 598,888
Mega MILLENNIUM MANAGEMENT LLC $27,176,823 1.26% 564,420
Mega DEUTSCHE BANK AG\ Bank $25,215,720 1.17% 523,691
Mid Soleus Capital Management, L.P. $25,103,146 1.16% 521,353
Mega VICTORY CAPITAL MANAGEMENT INC $24,388,985 1.13% 506,521
Large Balyasny Asset Management L.P. $24,064,984 1.12% 499,792
Mega BlackRock, Inc. $23,436,379 1.09% 486,737
Mega JANUS HENDERSON GROUP PLC $23,161,256 1.07% 481,023
Mega CITADEL ADVISORS LLC $22,859,212 1.06% 474,750
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $21,089,795 0.98% 438,002
Mega Fisher Asset Management, LLC $20,655,001 0.96% 428,972
Mega TWO SIGMA INVESTMENTS, LP $20,267,009 0.94% 420,914
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $18,480,499 0.86% 383,811
Mega AQR CAPITAL MANAGEMENT LLC $18,234,258 0.85% 378,697
Large Aberdeen Group plc $17,990,476 0.83% 373,634
Large NOMURA HOLDINGS INC $16,512,512 0.77% 342,939
Mid OBERWEIS ASSET MANAGEMENT INC/ $15,342,227 0.71% 318,634
Mid ArrowMark Colorado Holdings LLC $15,261,431 0.71% 316,956
Large MARSHALL WACE, LLP $14,703,613 0.68% 305,371
Mid Penn Capital Management Company, LLC $14,540,962 0.67% 301,993
Large SEI INVESTMENTS CO $13,674,840 0.63% 284,005
Mid BRAIDWELL LP $13,121,934 0.61% 272,522
Small Parkman Healthcare Partners LLC $12,479,709 0.58% 259,184
Small ESSEX INVESTMENT MANAGEMENT CO LLC $12,002,735 0.56% 249,278
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $10,093,058 0.47% 209,617
Mid Granahan Investment Management, LLC $10,075,676 0.47% 209,256
Mid CASTLEARK MANAGEMENT LLC $8,739,802 0.41% 181,512
Mid PEREGRINE CAPITAL MANAGEMENT LLC $8,732,484 0.41% 181,360
Mid ORBIMED ADVISORS LLC $8,695,841 0.40% 180,599
Mega GOLDMAN SACHS GROUP INC $8,421,482 0.39% 174,901
Large Rockefeller Capital Management L.P. $8,351,039 0.39% 173,438
Large Squarepoint Ops LLC $7,612,177 0.35% 158,093
Large Trexquant Investment LP $6,513,732 0.30% 135,280
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $6,476,945 0.30% 134,516
Large Man Group plc $6,124,005 0.28% 127,186
Mid Linden Thomas Advisory Services, LLC $5,863,562 0.27% 121,777
Mid Voleon Capital Management LP $5,796,537 0.27% 120,385
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $5,503,015 0.26% 114,289
Mega JPMORGAN CHASE & CO $5,152,866 0.24% 107,017
Mega NORDEA INVESTMENT MANAGEMENT AB $5,134,474 0.24% 106,635
Large Universal- Beteiligungs- und Servicegesellschaft mbH $5,039,090 0.23% 104,654
Small GLOBEFLEX CAPITAL L P $4,497,017 0.21% 93,396
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $4,266,090 0.20% 88,600
Mid PDT Partners, LLC $3,864,663 0.18% 80,263
Mega STATE STREET CORP $3,689,878 0.17% 76,633
Mega Swiss National Bank Bank $3,442,725 0.16% 71,500
Mid Legato Capital Management LLC $3,409,260 0.16% 70,805
Mega UBS Group AG $3,356,054 0.16% 69,700
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $3,050,109 0.14% 63,346
Small Informed Momentum Co LLC $2,720,186 0.13% 56,494
Mid Brevan Howard Capital Management LP $2,594,418 0.12% 53,882
Mid Penserra Capital Management LLC $2,556,861 0.12% 53,102
Large ExodusPoint Capital Management, LP $2,518,389 0.12% 52,303
Small Fieldview Capital Management, LLC $2,459,116 0.11% 51,072
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $2,421,896 0.11% 50,299
Mid OpenArc Corporate Advisory, LLC $2,328,196 0.11% 48,353
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $2,143,878 0.10% 44,525
Mega GEODE CAPITAL MANAGEMENT, LLC $2,134,008 0.10% 44,320
Large Cerity Partners LLC $2,104,732 0.10% 43,712
Large Schonfeld Strategic Advisors LLC $2,099,291 0.10% 43,599
Large Jain Global LLC $2,071,750 0.10% 43,027
Large IEQ CAPITAL, LLC $2,068,042 0.10% 42,950
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $2,021,096 0.09% 41,975
Small Financial Enhancement Group LLC $2,007,454 0.09% 31,391
Mega JANE STREET GROUP, LLC $1,998,225 0.09% 41,500
Large Baird Financial Group, Inc. $1,937,989 0.09% 40,249
Mid Jump Financial, LLC $1,913,239 0.09% 39,735
Mega NORTHERN TRUST CORP Bank $1,777,889 0.08% 36,924
Small Inspire Investing, LLC $1,698,298 0.08% 35,271
Mega BARCLAYS PLC $1,644,417 0.08% 34,152
Mega CITIGROUP INC $1,623,328 0.08% 33,714
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,545,422 0.07% 32,096
Large STIFEL FINANCIAL CORP $1,538,439 0.07% 31,951
Mega AMERIPRISE FINANCIAL INC $1,529,003 0.07% 31,755
Mega RAYMOND JAMES FINANCIAL INC $1,496,934 0.07% 31,089
Small Lisanti Capital Growth, LLC $1,495,779 0.07% 31,065
Small Artia Global Partners LP $1,405,980 0.07% 29,200
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $1,394,183 0.06% 28,955
Large Handelsbanken Fonder AB $1,342,950 0.06% 21,000
Key facts CIK 1730430 CUSIP G52694109 13F (30d) 13 filings 12 filers Visit website Investor relations

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