GLAUKOS Corp (GKOS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

57,967,857Shares Outstanding

2,415,424Shares held by institutions

$257,580,815Value of institutional holdings

97.27%Institutional ownership %

9.54%Shares Changed QoQ

314No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 314 institutions have reported a stake in GLAUKOS Corp (NYSE:GKOS) as of December 2025, according to recent 13F filings with the SEC.

Glaukos saw its institutional ownership percentage rose to 97.3% in December 2025 from 97.1% in September 2025.
The company experienced a 9.54% quarterly change in institutional shares held, alongside a decrease of 1.88% in total owners annually.
A review of institutional activity for Glaukos shows 185 of 314 filers increasing their positions, while 98 reduced their stake, and 31 remained unchanged.
This class of investors increased its holdings in Glaukos to 56.39Mn shares for the 13F-cycle ending December 2025, up by 4.91Mn shares quarter on quarter, and down 972.78K shares year over year.
With 9.16Mn shares, BlackRock, Inc. commands the largest institutional position in Glaukos as of December 31, 2025, equating to 15.81% of the company.
Among the most significant buyers of Glaukos during 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 (691.29K).
Leading sellers of Glaukos stock in December 2025 included WELLINGTON MANAGEMENT GROUP LLP (3.09Mn), Point72 Asset Management, L.P. (529.13K), BROWN CAPITAL MANAGEMENT LLC (436.18K), T. Rowe Price Investment Management, Inc. (395.63K), Clearbridge Investments, LLC (359.53K).
The top 10 institutional holders of Glaukos for the quarter ending December 2025 included 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 (2.10Mn), ALLIANCEBERNSTEIN L.P. (1.64Mn), MILLENNIUM MANAGEMENT LLC (1.61Mn), GOLDMAN SACHS GROUP INC (1.35Mn), GEODE CAPITAL MANAGEMENT, LLC (1.32Mn).

314 Institutional Holders

2,415,424 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
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	691,289	75.27%	$181,751,114.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,350,425	913,458	209.05%	$152,476,487.00
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
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
NORTHERN TRUST CORP	31 Dec, 2025	587,130	-40,530	-6.46%	$66,292,849.00

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