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KNSA · Kiniksa Pharmaceuticals International, plc

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$78.08 -1.72 (-2.16%) At close · Aug 28
Market Cap
$12.18B
Shares
156.05M

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: 268
Total Value: $3,021,981,564
Total Shares: 47,255,383
Showing 1–100 of 274 holdings by value · page 1 of 3

Institutional Ownership Trend

9 quarters

Holder Concentration

Across 268 13F filers · Δ vs Mar 31, 2026
Top Holder
14.8%
Jun 2024 → Jun 2026 · range 7.5% – 14.8%
+0.1 pts
Top 5
39.8%
Jun 2024 → Jun 2026 · range 29.7% – 45.7%
+2.3 pts
Top 10
52.8%
Jun 2024 → Jun 2026 · range 45.5% – 67.2%
+3.2 pts
HHI
461
Jun 2024 → Jun 2026 · range 296 – 576
Broadly held+27

Quarterly Activity

vs Mar 31, 2026
New
72
Increased
86
Decreased
81
Sold Out
34
Unchanged
29
Holder count: +38
Institutional value: +35.0%
Shares held: +1.6%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 274
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1730430 CUSIP G52694109 13F (30d) 215 filings 213 filers Visit website Investor relations