Ticker · CUSIP 377322102

GKOS

GLAUKOS CORP

Healthcare·Medical Devices

···Share

Holders (tracked)

Combined shares

3,677,401

Combined value

$415.22M

Last close

$124.79

Quarter

2025Q4

Price is +10.5% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$124.79+34.53 (+38.26%)H $125.90 · L $74.67 · Avg Vol 931K

Tracked holders · last 8 quarters

-1 vs previous quarter over the last 8.

SEC event timeline

26 events

Navratil Tomas · CHIEF DEVELOPMENT OFFICER
2026-04-10
Sold $144.4K @ $116.72
Insider sell
Navratil Tomas · CHIEF DEVELOPMENT OFFICER
2026-04-10
Sold $24.7K @ $117.45
Insider sell
Navratil Tomas · CHIEF DEVELOPMENT OFFICER
2026-04-10
Sold $73.3K @ $119.35
Insider sell
Navratil Tomas · CHIEF DEVELOPMENT OFFICER
2026-04-10
Sold $3.8K @ $120.23
Insider sell
AQR Capital Management added2026-02-17
+5,255 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+5,263 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−3,093,846 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+279,855 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+31,712 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−28,984 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+696,289 shares · 2025Q4
Position
Steve Cohen (Point72) trimmed2026-02-17
−529,127 shares · 2025Q4
Position
Renaissance Technologies exited2026-02-12
−57,892 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+536,143 shares · 2025Q4
Position
Mario Gabelli (GAMCO) trimmed2026-02-05
−4,399 shares · 2025Q4
Position
AQR Capital Management added2025-11-14
+3,976 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) opened position2025-11-14
+913,410 shares · 2025Q3
Position
Steve Cohen (Point72) trimmed2025-11-14
−28,539 shares · 2025Q3
Position
Two Sigma Investments opened position2025-11-14
+66,939 shares · 2025Q3
Position
D.E. Shaw & Co. opened position2025-11-14
+278,435 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+9,364 shares · 2025Q3
Position
Wellington Management added2025-11-14
+336,266 shares · 2025Q3
Position
Renaissance Technologies opened position2025-11-13
+57,892 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−738,828 shares · 2025Q3
Position
Mario Gabelli (GAMCO) added2025-11-12
+99 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−5,839 shares · 2024Q3
Position

Insider activity

Last 30 days

Net (open-market)

−$246.2K

Buys

0 · $0

Sells

4 · $246.2K

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-10	Navratil Tomas CHIEF DEVELOPMENT OFFICER · Insider	S	1,237	$116.72	$144.4K
04-10	Navratil Tomas CHIEF DEVELOPMENT OFFICER · Insider	S	210	$117.45	$24.7K
04-10	Navratil Tomas CHIEF DEVELOPMENT OFFICER · Insider	S	614	$119.35	$73.3K
04-10	Navratil Tomas CHIEF DEVELOPMENT OFFICER · Insider	S	32	$120.23	$3.8K

View full insider history for GKOS →

Follow-the-investor returns

If you'd copied each holder of GKOS…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Mario Gabelli (GAMCO)	2019Q3	$68.21	+83.0%	$462K
Steve Cohen (Point72)	2016Q2	$86.11	+44.9%	$20.2M
Norges Bank (Norway SWF)	2018Q3	$89.51	+39.4%	$66.9M
Two Sigma Investments	2016Q2	$90.88	+37.3%	$12.3M
Izzy Englander (Millennium Mgmt)	2016Q1	$95.22	+31.1%	$200.9M
Ken Griffin (Citadel Advisors)	2016Q1	$95.75	+30.3%	$3.4M
Ken Griffin (Citadel Advisors)	2016Q1	$95.75	+30.3%	$3.4M
Ken Griffin (Citadel Advisors)	2016Q1	$95.75	+30.3%	$3.4M
D.E. Shaw & Co.	2016Q2	$97.31	+28.2%	$69.7M
T. Rowe Price	2016Q1	$97.59	+27.9%	$15.2M
AQR Capital Management	2016Q4	$98.34	+26.9%	$1.9M
Wellington Management	2016Q1	$107.72	+15.9%	$60.8M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions1

Norges Bank (Norway SWF)
+536,143
$60.5M

Added to5

Izzy Englander (Millennium Mgmt)
+696,289
$78.6M
D.E. Shaw & Co.
+279,855
$31.6M
Two Sigma Investments
+31,712
$3.6M
AQR Capital Management
+5,255
$593K
T. Rowe Price
+5,263
$594

Trimmed4

Wellington Management
−3,093,846
$349.3M
Steve Cohen (Point72)
−529,127
$59.7M
Ken Griffin (Citadel Advisors)
−28,984
$3.3M
Mario Gabelli (GAMCO)
−4,399
$497K

Exited1

Renaissance Technologies
−57,892
$4.7M

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	15	14,928,029	$26.41B	—
2022Q2	14	14,049,870	$19.25B	-1
2022Q3	16	13,497,569	$718.6M	+2
2022Q4	15	15,119,057	$660.4M	-1
2023Q1	16	15,699,138	$786.5M	+1
2023Q2	16	15,221,098	$1.08B	—
2023Q3	15	10,545,871	$793.6M	-1
2023Q4	17	10,587,160	$841.6M	+2
2024Q1	14	10,605,950	$1.00B	-3
2024Q2	17	11,827,302	$1.40B	+3
2024Q3	17	3,925,172	$511.4M	—
2024Q4	14	2,607,069	$390.9M	-3
2025Q1	13	3,063,056	$301.5M	-1
2025Q2	10	5,273,290	$544.7M	-3
2025Q3	13	5,854,532	$477.4M	+3
2025Q4	12	3,677,401	$415.2M	-1

Who owns GKOS

12 super-investors · 2025Q4

Tracked stake

3.68M

Combined value

$415M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New1Added5Trim6

#	Manager	Shares	Value	% of book	Last action
1	Izzy Englander Millennium Mgmt	1.61M	$182M	0.1%	Added+696.3K
2	D.E. Shaw & Co.	558.3K	$63M	0.0%	Added+279.9K
3	Norges Bank Norway SWF	536.1K	$61M	0.0%	New+536.1K
4	Wellington Management	486.8K	$55M	0.0%	Trim−3.09M
5	Steve Cohen Point72	161.6K	$18M	0.0%	Trim−529.1K
6	T. Rowe Price	122.2K	$14M	0.0%	Added+5.3K
7	Two Sigma Investments	98.7K	$11M	0.0%	Added+31.7K
8	Ken Griffin Citadel Advisors	30.9K	$3M	0.0%	Trim−29.0K
9	Ken Griffin Citadel Advisors	27.0K	$3M	0.0%	Trim−29.0K
10	Ken Griffin Citadel Advisors	26.9K	$3M	0.0%	Trim−29.0K
11	AQR Capital Management	15.6K	$2M	0.0%	Added+5.3K
12	Mario Gabelli GAMCO	3.7K	$418K	0.0%	Trim−4.4K

Recent moves

20 transactions

ADDD.E. Shaw & Co.
+279,855 · 2025Q4
TRIMSteve Cohen (Point72)
−529,127 · 2025Q4
TRIMWellington Management
−3,093,846 · 2025Q4
ADDAQR Capital Management
+5,255 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−28,984 · 2025Q4
ADDT. Rowe Price
+5,263 · 2025Q4
ADDTwo Sigma Investments
+31,712 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+696,289 · 2025Q4
SOLDRenaissance Technologies
−57,892 · 2025Q4
NEWNorges Bank (Norway SWF)
+536,143 · 2025Q4
TRIMMario Gabelli (GAMCO)
−4,399 · 2025Q4
ADDT. Rowe Price
+9,364 · 2025Q3
ADDWellington Management
+336,266 · 2025Q3
TRIMSteve Cohen (Point72)
−28,539 · 2025Q3
NEWIzzy Englander (Millennium Mgmt)
+913,410 · 2025Q3
NEWTwo Sigma Investments
+66,939 · 2025Q3
NEWD.E. Shaw & Co.
+278,435 · 2025Q3
ADDAQR Capital Management
+3,976 · 2025Q3
NEWRenaissance Technologies
+57,892 · 2025Q3
SOLDNorges Bank (Norway SWF)
−738,828 · 2025Q3

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