Glaukos Corporation GKOS

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246.70 USD +13.66 (+5.86%)

At closeNov 4, 2026, 7:32 PM EST

252.34 +5.64 +2.29%

After hours · Nov 4, 7:32 PM ET

235.95 Day range 255.19

80.91 52-week range 255.19

Held by insiders 3.56%

Held by institutions 105.01%

Float held by institutions 108.88%

Institutions 530

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	16.12%	9,540,056	2.35B	Jun 29, 2026
Jupiter Topco LLC	8.21%	4,862,894	1.20B	Jun 29, 2026
Vanguard Portfolio Management LLC	5.61%	3,321,839	818.73M	Jun 29, 2026
Primecap Management Company	5.14%	3,040,705	749.44M	Jun 29, 2026
Vanguard Capital Management LLC	4.31%	2,551,132	628.78M	Jun 29, 2026
State Street Corporation	3.91%	2,315,568	570.72M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Small-Cap ETF	5.94%	3,513,860	866.06M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.00%	1,773,769	437.18M	Jun 29, 2026
iShares Trust-iShares Russell 2000 ETF	2.53%	1,496,000	368.72M	Sep 29, 2026
VANGUARD HORIZON FUNDS-Vanguard Capital Opportunity Fund	2.50%	1,478,020	364.29M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	2.16%	1,280,092	315.50M	Jun 29, 2026
JANUS INVESTMENT FUND-Janus Henderson Triton Fund	1.79%	1,058,024	260.77M	Jun 29, 2026

GKOS insiders
Insider	Relation	Latest transaction	Date	Shares held
BURNS THOMAS WILLIAM	Chief Executive Officer	Stock Gift	Mar 31, 2026	1,772,730
FOLEY MARK J	Director	Stock Award(Grant)	May 27, 2026	60,267
GILLIAM JOSEPH E.	President	Sale	Aug 10, 2026	72,588
HOFFMEISTER DAVID F	Director	Stock Award(Grant)	May 27, 2026	87,725
KLIMAN GILBERT H.	Director	Sale	Aug 18, 2026	37,406
NAVRATIL TOMAS	Officer	Sale	Oct 29, 2026	37,328

Held by funds