Kiniksa Pharmaceuticals International, plc (KNSA) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

80,035,400Shares Outstanding

50,140,474Shares held by institutions

$2,933,217,729Value of institutional holdings

62.65%Institutional ownership %

25.24%Shares Changed QoQ

215No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Kiniksa Pharmaceuticals International, plc (NASDAQ:KNSA) appears in 216 institutional 13F filings for the quarter ending December 2025.

These investors held 61.4% of outstanding shares in December 2025, up from 51.9% in September 2025.
They increased total shares held in Kiniksa Pharmaceuticals International by 22.92% from last quarter, and the number of investors in KNSA increased 36.71% annually.
Of these 216 holders, 114 added to their stakes in Kiniksa Pharmaceuticals International, 71 trimmed positions, and 31 made no changes.
Institutional investors collectively held 49.15Mn shares in Kiniksa Pharmaceuticals International as of December 2025, up by 9.17Mn shares quarter on quarter, and up 7.93Mn shares year over year.
As of December 31, 2025, SG Americas Securities, LLC held the largest stake in Kiniksa Pharmaceuticals International with 640.18K shares, accounting for 0.8% of total shares outstanding.
The most significant purchases of KNSA for the quarter ending December 2025 came from SG Americas Securities, LLC (98.78K), Inspire Investing, LLC (35.27K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (20.18K), Cannon Global Investment Management, LLC (11.0K), Linden Thomas Advisory Services, LLC (7.32K).
Leading sellers of Kiniksa Pharmaceuticals International shares for the quarter ending December 2025 were Pictet Asset Management Holding SA (164.23K), PEREGRINE CAPITAL MANAGEMENT LLC (29.55K), PSP Research LLC (3.66K), Pallas Capital Advisors LLC (854), TOTH FINANCIAL ADVISORY CORP (840).
Per Business Quant, the top 10 investors in KNSA for the quarter ending December 2025 include SG Americas Securities, LLC (640.18K), Pictet Asset Management Holding SA (623.29K), PEREGRINE CAPITAL MANAGEMENT LLC (181.36K), Linden Thomas Advisory Services, LLC (121.78K), Inspire Investing, LLC (35.27K), TOTH FINANCIAL ADVISORY CORP (20.72K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (20.18K), Cannon Global Investment Management, LLC (11.0K), JUNCTURE WEALTH STRATEGIES, LLC (9.47K), PSP Research LLC (9.0K).

215 Institutional Holders

50,140,474 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Rockefeller Capital Management L.P.	31 Dec, 2025	7,327,755	7,154,317	4,125.00%	$14,308,636.00
Rubric Capital Management LP	31 Dec, 2025	3,328,653	-671,347	-16.78%	$137,306,936.00
VANGUARD GROUP INC	31 Dec, 2025	3,112,937	49,802	1.63%	$128,408,651.00
BAKER BROS. ADVISORS LP	31 Dec, 2025	2,826,246	1,577	0.06%	$116,582,648.00
TANG CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,259,889	-68,720	-2.95%	$93,220,421.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	1,713,043	94,522	5.84%	$70,633.00
Goldman Sachs Group Inc	31 Dec, 2025	1,658,834	1,112,324	203.53%	$68,426,902.00
FMR LLC	31 Dec, 2025	1,642,863	843,108	105.42%	$67,768,109.00
Morgan Stanley	31 Dec, 2025	1,360,044	-2,879	-0.21%	$56,101,817.00
Fairmount Funds Management LLC	31 Dec, 2025	1,319,688	-453,151	-25.56%	$54,437,130.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	1,241,621	107,435	9.47%	$51,216,867.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,068,216	-47	0.00%	$44,063,910.00
BNP PARIBAS FINANCIAL MARKETS	31 Dec, 2025	831,777	178,366	27.30%	$34,310,801.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	825,285	-188,840	-18.62%	$34,043,006.00
Point72 Asset Management, L.P.	31 Dec, 2025	797,137	230,210	40.61%	$32,881,901.00
Pictet Asset Management Holding SA	31 Dec, 2025	787,520	-144,576	-15.51%	$32,485,200.00
Qube Research & Technologies Ltd	31 Dec, 2025	766,291	76,403	11.07%	$31,609,504.00
CITADEL ADVISORS LLC	31 Dec, 2025	742,118	427,562	135.93%	$30,612,368.00
Connor, Clark & Lunn Investment Management Ltd.	31 Dec, 2025	739,326	13,971	1.93%	$30,497,198.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	683,505	51,382	8.13%	$28,193,698.00

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