GLAUKOS Corp (GKOS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

356,058Shares held by institutions

$37,411,014Value of institutional holdings

107.38%Institutional ownership %

7.54%Shares Changed QoQ

297No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

GLAUKOS Corp (NYSE:GKOS) showed up in the 13F filings of 321 institutional investors as of December 2025.

Collectively, these holders controlled 99.0% of Glaukos's outstanding shares in December 2025, down from 100.2% in September 2025.
They increased total shares held in Glaukos by 6.93% from last quarter, and the number of investors in GKOS increased 0.63% annually.
Among the 321 funds, 190 bought more Glaukos shares, 102 sold down, and 29 held their ground.
Altogether, these fund groups held 56.83Mn shares in GKOS by December 2025, up by 3.68Mn shares quarter on quarter, and down 2.34Mn shares year over year.
As of December 31, 2025, the biggest holder of Glaukos is BlackRock, Inc. at 9.16Mn shares, representing 15.97% of shares outstanding.
Leading buyers of Glaukos shares for the quarter ending December 2025 were Janus Henderson Group Plc (1.95Mn), PRIMECAP MANAGEMENT CO/CA/ (1.12Mn), Goldman Sachs Group Inc (913.46K), Holocene Advisors, LP (752.24K), MILLENNIUM MANAGEMENT LLC (696.29K).
Top sellers of GKOS stock for the quarter ending December 2025 included WELLINGTON MANAGEMENT GROUP LLP (3.09Mn), Jpmorgan Chase & Co (783.69K), Point72 Asset Management, L.P. (529.13K), AustralianSuper Pty Ltd (449.85K), BROWN CAPITAL MANAGEMENT LLC (436.18K).
According to Business Quant data, leading holders of GKOS for December 2025 are BlackRock, Inc. (9.16Mn), VANGUARD GROUP INC (6.02Mn), PRIMECAP MANAGEMENT CO/CA/ (3.38Mn), Janus Henderson Group Plc (3.02Mn), State Street Corp (2.12Mn), Ameriprise Financial Inc (2.1Mn), ALLIANCEBERNSTEIN L.P. (1.64Mn), MILLENNIUM MANAGEMENT LLC (1.61Mn), Goldman Sachs Group Inc (1.35Mn), GEODE CAPITAL MANAGEMENT, LLC (1.32Mn).

322 Institutional Holders

356,058 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	508,743	5.88%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-26,028	-0.43%	$0.00
Holocene Advisors, LP	31 Dec, 2025	752,242	137.51%	$0.00
Barclays Plc	31 Dec, 2025	-89,724	-49.61%	$0.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	1,123,140	49.83%	$0.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	13,174	1.20%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	3,698	0.00%	$0.00
Janus Henderson Group Plc	31 Dec, 2025	1,953,578	183.40%	$0.00
BRAIDWELL LP	31 Dec, 2025	141,815	18.18%	$0.00
Fund Advisors of America Inc/FL	31 Dec, 2025	1,940	0.00%	$0.00
State Street Corp	31 Dec, 2025	18,040	0.86%	$0.00
UBS Group AG	31 Dec, 2025	663,849	315.98%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	125	45.13%	$0.00
Ameriprise Financial Inc	31 Dec, 2025	204,010	10.74%	$0.00
AustralianSuper Pty Ltd	31 Dec, 2025	-449,846	-50.00%	$0.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	-90,026	-5.19%	$0.00
Nuveen, LLC	31 Dec, 2025	244,017	150.60%	$0.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	696,289	76.23%	$0.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	87,781	32.82%	$0.00
Goldman Sachs Group Inc	31 Dec, 2025	913,458	209.05%	$0.00

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