Kiniksa Pharmaceuticals International, plc (KNSA) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

201,236Shares held by institutions

$9,192,460Value of institutional holdings

50.26%Institutional ownership %

0.20%Shares Changed QoQ

186No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Kiniksa Pharmaceuticals International, plc (NASDAQ:KNSA) is held by 216 institutional investors per 13F filings through December 2025.

These investors collectively held 61.4% of Kiniksa Pharmaceuticals International's outstanding shares in December 2025, up from 51.9% in September 2025.
Their total shares held in KNSA increased 22.92% quarter over quarter, and separately, investors owning Kiniksa Pharmaceuticals International increased 36.71% from a year ago.
During the quarter, 114 of these 216 funds increased positions in KNSA, 71 reduced exposure, and 31 held steady.
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, the biggest holder of Kiniksa Pharmaceuticals International is Rockefeller Capital Management L.P. at 7.15Mn shares, representing 8.94% of shares outstanding.
Top purchasers of KNSA stock for the quarter ending December 2025 included Rockefeller Capital Management L.P. (6.98Mn), FMR LLC (843.11K), VICTORY CAPITAL MANAGEMENT INC (512.16K), Soleus Capital Management, L.P. (437.0K), Spruce Street Capital LP (434.98K).
Leading sellers of Kiniksa Pharmaceuticals International shares for the quarter ending December 2025 were Bank Of America Corp /De/ (761.6K), Rubric Capital Management LP (671.35K), Fairmount Funds Management LLC (453.15K), Jpmorgan Chase & Co (336.52K), BRAIDWELL LP (329.36K).
Kiniksa Pharmaceuticals International's 10 largest shareholders as of December 2025 include Rockefeller Capital Management L.P. (7.15Mn), Rubric Capital Management LP (3.33Mn), VANGUARD GROUP INC (3.11Mn), BAKER BROS. ADVISORS LP (2.83Mn), TANG CAPITAL MANAGEMENT LLC (2.26Mn), ACADIAN ASSET MANAGEMENT LLC (1.71Mn), FMR LLC (1.64Mn), Morgan Stanley (1.36Mn), Fairmount Funds Management LLC (1.32Mn), D. E. Shaw & Co., Inc. (1.24Mn) per Business Quant data.

216 Institutional Holders

201,236 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	-11,044	-2.41%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	49,802	1.63%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	7,154,317	4,125.00%	$0.00
BAKER BROS. ADVISORS LP	31 Dec, 2025	1,577	0.06%	$0.00
Rubric Capital Management LP	31 Dec, 2025	-671,347	-16.78%	$0.00
Barclays Plc	31 Dec, 2025	-67,405	-93.64%	$0.00
TANG CAPITAL MANAGEMENT LLC	31 Dec, 2025	-68,720	-2.95%	$0.00
Fairmount Funds Management LLC	31 Dec, 2025	-453,151	-25.56%	$0.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	94,522	5.84%	$0.00
Point72 Asset Management, L.P.	31 Dec, 2025	230,210	40.61%	$0.00
FMR LLC	31 Dec, 2025	843,108	105.42%	$0.00
Pictet Asset Management Holding SA	31 Dec, 2025	-144,576	-15.51%	$0.00
Morgan Stanley	31 Dec, 2025	-2,879	-0.21%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	76,403	11.07%	$0.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	107,435	9.47%	$0.00
Soleus Capital Management, L.P.	31 Dec, 2025	437,000	291.33%	$0.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	-47	0.00%	$0.00
Spruce Street Capital LP	31 Dec, 2025	434,982	0.00%	$0.00
BNP PARIBAS FINANCIAL MARKETS	31 Dec, 2025	178,366	27.30%	$0.00
Aberdeen Group plc	31 Dec, 2025	241,876	152.39%	$0.00

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