GLAUKOS Corp (GKOS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

57,398,000Shares Outstanding

58,179,486Shares held by institutions

$7,104,297,035Value of institutional holdings

101.36%Institutional ownership %

9.11%Shares Changed QoQ

322No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

GLAUKOS Corp (NYSE:GKOS) has 321 institutional investors with active 13F positions 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.
Their total shares held in GKOS increased 6.93% quarter over quarter, and separately, investors owning Glaukos increased 0.63% from a year ago.
Of these 321 funds, 190 grew their exposure to Glaukos, 102 cut back, and 29 maintained positions.
Institutional investors collectively held 56.83Mn shares in Glaukos as of December 2025, up by 3.68Mn shares quarter on quarter, and down 2.34Mn shares year over year.
BlackRock, Inc. leads ownership in GKOS with 9.16Mn shares as of December 31, 2025, equal to 15.97% of outstanding shares.
The biggest buyers of Glaukos for the quarter ending December 2025 included Goldman Sachs Group Inc (2.26Mn), Janus Henderson Group Plc (1.95Mn), PRIMECAP MANAGEMENT CO/CA/ (1.12Mn), Holocene Advisors, LP (752.24K), MILLENNIUM MANAGEMENT LLC (696.29K).
The largest sales of GKOS for the quarter ending December 2025 came from 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), Goldman Sachs Group Inc (2.7Mn), State Street Corp (2.12Mn), Ameriprise Financial Inc (2.1Mn), ALLIANCEBERNSTEIN L.P. (1.64Mn), MILLENNIUM MANAGEMENT LLC (1.61Mn), GEODE CAPITAL MANAGEMENT, LLC (1.32Mn).

322 Institutional Holders

58,179,486 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	9,164,538	508,743	5.88%	$1,034,767,984.00
VANGUARD GROUP INC	31 Dec, 2025	6,020,492	-26,028	-0.43%	$679,773,752.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	3,376,928	1,123,140	49.83%	$381,288,942.00
Janus Henderson Group Plc	31 Dec, 2025	3,018,787	1,953,578	183.40%	$340,854,975.00
Goldman Sachs Group Inc	31 Dec, 2025	2,700,850	2,263,883	518.09%	$304,952,974.00
State Street Corp	31 Dec, 2025	2,122,402	18,040	0.86%	$239,640,410.00
Ameriprise Financial Inc	31 Dec, 2025	2,104,294	204,010	10.74%	$237,595,989.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	1,643,448	-90,026	-5.19%	$185,561,714.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,609,699	696,289	76.23%	$181,751,114.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,317,648	1,561	0.12%	$148,799,552.00
Holocene Advisors, LP	31 Dec, 2025	1,299,294	752,242	137.51%	$146,703,286.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	1,106,918	13,174	1.20%	$124,982,111.00
BRAIDWELL LP	31 Dec, 2025	921,979	141,815	18.18%	$104,100,649.00
UBS Group AG	31 Dec, 2025	873,942	663,849	315.98%	$98,676,791.00
Capital World Investors	31 Dec, 2025	850,893	0	0.00%	$96,074,329.00
Invesco Ltd.	31 Dec, 2025	780,267	172,825	28.45%	$88,099,946.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	714,026	11,646	1.66%	$80,620,676.00
Artisan Partners Limited Partnership	31 Dec, 2025	702,818	409,153	139.33%	$79,355,180.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	672,958	672,958	0.00%	$75,984,000.00
Morgan Stanley	31 Dec, 2025	670,778	241,200	56.15%	$75,737,821.00

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