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Equibles

KNSA

Kiniksa Pharmaceuticals International, plc

Company with tickers: KNSA

CIK
1730430
CUSIP
G52694109
Shares Outstanding
46,303,276
13F Activity (30d)
172 filings 167 filers

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.

Holders: 229
Total Value: $2,238,723,216
Total Shares: 46,494,774
Showing 1–100 of 234 holdings by value · page 1 of 3

Institutional Ownership Trend

8 quarters

Holder Concentration

Across 229 13F filers · Δ vs Dec 31, 2025
Top Holder
14.7%
Jun 2024 → Mar 2026 · range 7.5% – 14.7%
+7.2 pts
Top 5
37.5%
Jun 2024 → Mar 2026 · range 29.7% – 45.7%
+7.8 pts
Top 10
49.6%
Jun 2024 → Mar 2026 · range 45.5% – 67.3%
+4.1 pts
HHI
434
Jun 2024 → Mar 2026 · range 296 – 576
Broadly held +138

Quarterly Activity

vs Dec 31, 2025
New
41
Increased
75
Decreased
86
Sold Out
36
Unchanged
27
Holder count: +5
Institutional value: +21.7%
Shares held: +4.3%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega FMR LLC +5,180,837 6,823,700
Mega BANK OF AMERICA CORP /DE/ +506,576 735,940
Mid Rubric Capital Management LP +421,347 3,750,000
Mega JANUS HENDERSON GROUP PLC +327,595 481,023
Small Spruce Street Capital LP +326,081 761,063

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega GOLDMAN SACHS GROUP INC −654,516 174,901
Large Caption Management, LLC −491,100 999,400
Small Parkman Healthcare Partners LLC −406,024 259,184
Large ACADIAN ASSET MANAGEMENT LLC −376,730 1,336,313
Mega MORGAN STANLEY −362,258 997,786

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 1,766,268 $85,045,804
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,333,093 $64,188,427
Large Balyasny Asset Management L.P. 499,792 $24,064,984
Mid Penn Capital Management Company, LLC 301,993 $14,540,962
Large NEW YORK STATE COMMON RETIREMENT FUND 209,617 $10,093,058

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 3,112,937 $128,408,650
Mid Fairmount Funds Management LLC 1,319,688 $54,437,130
Mid Logos Global Management LP 350,000 $14,437,500
Mid Hillsdale Investment Management Inc. 224,074 $9,243,052
Large TWO SIGMA ADVISERS, LP 208,300 $8,592,375
Filter: New 41 Increased 75 Reduced 86 Sold out 36 Unchanged 27
Showing 100 of 234
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega FMR LLC $328,561,152 14.68% 6,823,700
Mid Rubric Capital Management LP $180,562,500 8.07% 3,750,000
Large BAKER BROS. ADVISORS LP $136,083,744 6.08% 2,826,246
Mid TANG CAPITAL MANAGEMENT LLC $108,813,655 4.86% 2,259,889
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $85,045,804 3.80% 1,766,268
Large ACADIAN ASSET MANAGEMENT LLC $64,343,470 2.87% 1,336,313
Mega VANGUARD CAPITAL MANAGEMENT LLC $64,188,427 2.87% 1,333,093
Large Caption Management, LLC $48,121,110 2.15% 999,400
Mega MORGAN STANLEY $48,043,392 2.15% 997,786
Mega D. E. Shaw & Co., Inc. $46,188,223 2.06% 959,257
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $42,981,867 1.92% 892,666
Mega DIMENSIONAL FUND ADVISORS LP $39,094,042 1.75% 811,922
Small Spruce Street Capital LP $36,645,183 1.64% 761,063
Mega BANK OF AMERICA CORP /DE/ Bank $35,435,509 1.58% 735,940
Large Qube Research & Technologies Ltd $33,071,971 1.48% 686,853
Large Connor, Clark & Lunn Investment Management Ltd. $31,279,636 1.40% 649,629
Mega BNP PARIBAS ARBITRAGE, SA $31,188,247 1.39% 647,731
Large Point72 Asset Management, L.P. $30,862,127 1.38% 640,958
Large SG Americas Securities, LLC Broker-Dealer $30,824,618 1.38% 640,179
Large Pictet Asset Management Holding SA $30,011,317 1.34% 623,288
Large Driehaus Capital Management LLC $29,438,813 1.31% 611,398
Mid RICE HALL JAMES & ASSOCIATES, LLC $29,295,230 1.31% 608,416
Mega ALLIANCEBERNSTEIN L.P. $28,836,457 1.29% 598,888
Mega MILLENNIUM MANAGEMENT LLC $27,176,823 1.21% 564,420
Mega DEUTSCHE BANK AG\ Bank $25,215,720 1.13% 523,691
Mid Soleus Capital Management, L.P. $25,103,146 1.12% 521,353
Mega VICTORY CAPITAL MANAGEMENT INC $24,388,985 1.09% 506,521
Large Balyasny Asset Management L.P. $24,064,984 1.07% 499,792
Mega BlackRock, Inc. $23,436,379 1.05% 486,737
Mega JANUS HENDERSON GROUP PLC $23,161,256 1.03% 481,023
Mega CITADEL ADVISORS LLC $22,859,212 1.02% 474,750
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $21,089,795 0.94% 438,002
Mega Fisher Asset Management, LLC $20,655,001 0.92% 428,972
Mega TWO SIGMA INVESTMENTS, LP $20,267,009 0.91% 420,914
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $18,480,499 0.83% 383,811
Mega AQR CAPITAL MANAGEMENT LLC $18,234,258 0.81% 378,697
Large Aberdeen Group plc $17,990,476 0.80% 373,634
Large NOMURA HOLDINGS INC $16,512,512 0.74% 342,939
Mid OBERWEIS ASSET MANAGEMENT INC/ $15,342,227 0.69% 318,634
Mid ArrowMark Colorado Holdings LLC $15,261,431 0.68% 316,956
Large MARSHALL WACE, LLP $14,703,613 0.66% 305,371
Mid Penn Capital Management Company, LLC $14,540,962 0.65% 301,993
Large SEI INVESTMENTS CO $13,674,840 0.61% 284,005
Mid BRAIDWELL LP $13,121,934 0.59% 272,522
Small Parkman Healthcare Partners LLC $12,479,709 0.56% 259,184
Small ESSEX INVESTMENT MANAGEMENT CO LLC $12,002,735 0.54% 249,278
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $10,093,058 0.45% 209,617
Mid Granahan Investment Management, LLC $10,075,676 0.45% 209,256
Mid CASTLEARK MANAGEMENT LLC $8,739,802 0.39% 181,512
Mid PEREGRINE CAPITAL MANAGEMENT LLC $8,732,484 0.39% 181,360
Mid ORBIMED ADVISORS LLC $8,695,841 0.39% 180,599
Mega GOLDMAN SACHS GROUP INC $8,421,482 0.38% 174,901
Large Rockefeller Capital Management L.P. $8,351,039 0.37% 173,438
Large Squarepoint Ops LLC $7,612,177 0.34% 158,093
Large Trexquant Investment LP $6,513,732 0.29% 135,280
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $6,476,945 0.29% 134,516
Large Man Group plc $6,124,005 0.27% 127,186
Mid Linden Thomas Advisory Services, LLC $5,863,562 0.26% 121,777
Mid Voleon Capital Management LP $5,796,537 0.26% 120,385
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $5,503,015 0.25% 114,289
Mega JPMORGAN CHASE & CO $5,152,866 0.23% 107,017
Mega NORDEA INVESTMENT MANAGEMENT AB $5,134,474 0.23% 106,635
Large Universal- Beteiligungs- und Servicegesellschaft mbH $5,039,090 0.23% 104,654
Small GLOBEFLEX CAPITAL L P $4,497,017 0.20% 93,396
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $4,266,090 0.19% 88,600
Mid PDT Partners, LLC $3,864,663 0.17% 80,263
Mega STATE STREET CORP $3,689,878 0.16% 76,633
Mega Swiss National Bank Bank $3,442,725 0.15% 71,500
Mid Legato Capital Management LLC $3,409,260 0.15% 70,805
Mega UBS Group AG $3,356,054 0.15% 69,700
Mid Hennion & Walsh Asset Management, Inc. $3,242,469 0.14% 67,341
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $3,050,109 0.14% 63,346
Small Informed Momentum Co LLC $2,720,186 0.12% 56,494
Mid Brevan Howard Capital Management LP $2,594,418 0.12% 53,882
Mid Penserra Capital Management LLC $2,556,861 0.11% 53,102
Large ExodusPoint Capital Management, LP $2,518,389 0.11% 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 0.10% 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 0.09% 43,712
Large Schonfeld Strategic Advisors LLC $2,099,291 0.09% 43,599
Large Jain Global LLC $2,071,750 0.09% 43,027
Large IEQ CAPITAL, LLC $2,068,042 0.09% 42,950
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $2,021,096 0.09% 41,975
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
Mid Inspire Investing, LLC $1,698,298 0.08% 35,271
Mega BARCLAYS PLC $1,644,417 0.07% 34,152
Mega CITIGROUP INC $1,623,328 0.07% 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 0.06% 29,200
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $1,394,183 0.06% 28,955

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