Ticker · CUSIP 377322102

GKOS

GLAUKOS CORP
Healthcare·Medical Devices
···Share
Holders (tracked)
12
Combined shares
3,677,401
Combined value
$415.22M
Last close
$124.79
Quarter
2025Q4
Price · 1Y$124.79+34.53 (+38.26%)H $125.90 · L $74.67 · Avg Vol 931K
$80.00$100.00$120.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
12142024Q12025Q4
Price is +10.5% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

26 events
  1. Navratil Tomas · CHIEF DEVELOPMENT OFFICER
    2026-04-10
    Sold $144.4K @ $116.72
    Insider sell
  2. Navratil Tomas · CHIEF DEVELOPMENT OFFICER
    2026-04-10
    Sold $24.7K @ $117.45
    Insider sell
  3. Navratil Tomas · CHIEF DEVELOPMENT OFFICER
    2026-04-10
    Sold $73.3K @ $119.35
    Insider sell
  4. Navratil Tomas · CHIEF DEVELOPMENT OFFICER
    2026-04-10
    Sold $3.8K @ $120.23
    Insider sell
  5. AQR Capital Management added2026-02-17
    +5,255 shares · 2025Q4
    Position
  6. T. Rowe Price added2026-02-17
    +5,263 shares · 2025Q4
    Position
  7. Wellington Management trimmed2026-02-17
    −3,093,846 shares · 2025Q4
    Position
  8. D.E. Shaw & Co. added2026-02-17
    +279,855 shares · 2025Q4
    Position
  9. Two Sigma Investments added2026-02-17
    +31,712 shares · 2025Q4
    Position
  10. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −28,984 shares · 2025Q4
    Position
  11. Izzy Englander (Millennium Mgmt) added2026-02-17
    +696,289 shares · 2025Q4
    Position
  12. Steve Cohen (Point72) trimmed2026-02-17
    −529,127 shares · 2025Q4
    Position
  13. Renaissance Technologies exited2026-02-12
    −57,892 shares · 2025Q4
    Position
  14. Norges Bank (Norway SWF) opened position2026-02-10
    +536,143 shares · 2025Q4
    Position
  15. Mario Gabelli (GAMCO) trimmed2026-02-05
    −4,399 shares · 2025Q4
    Position
  16. AQR Capital Management added2025-11-14
    +3,976 shares · 2025Q3
    Position
  17. Izzy Englander (Millennium Mgmt) opened position2025-11-14
    +913,410 shares · 2025Q3
    Position
  18. Steve Cohen (Point72) trimmed2025-11-14
    −28,539 shares · 2025Q3
    Position
  19. Two Sigma Investments opened position2025-11-14
    +66,939 shares · 2025Q3
    Position
  20. D.E. Shaw & Co. opened position2025-11-14
    +278,435 shares · 2025Q3
    Position
  21. T. Rowe Price added2025-11-14
    +9,364 shares · 2025Q3
    Position
  22. Wellington Management added2025-11-14
    +336,266 shares · 2025Q3
    Position
  23. Renaissance Technologies opened position2025-11-13
    +57,892 shares · 2025Q3
    Position
  24. Norges Bank (Norway SWF) exited2025-11-13
    −738,828 shares · 2025Q3
    Position
  25. Mario Gabelli (GAMCO) added2025-11-12
    +99 shares · 2025Q3
    Position
  26. 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
1
DateInsiderCodeSharesPriceValue
04-10Navratil Tomas
CHIEF DEVELOPMENT OFFICER · Insider
S1,237$116.72$144.4K
04-10Navratil Tomas
CHIEF DEVELOPMENT OFFICER · Insider
S210$117.45$24.7K
04-10Navratil Tomas
CHIEF DEVELOPMENT OFFICER · Insider
S614$119.35$73.3K
04-10Navratil Tomas
CHIEF DEVELOPMENT OFFICER · Insider
S32$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.
InvestorFirst inCost basisReturnPosition 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 Investments2016Q2$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 Price2016Q1$97.59+27.9%$15.2M
AQR Capital Management2016Q4$98.34+26.9%$1.9M
Wellington Management2016Q1$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
Added to5
Trimmed4
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
15
$26.41B
2022Q2
14
$19.25B
2022Q3
16
$718.6M
2022Q4
15
$660.4M
2023Q1
16
$786.5M
2023Q2
16
$1.08B
2023Q3
15
$793.6M
2023Q4
17
$841.6M
2024Q1
14
$1.00B
2024Q2
17
$1.40B
2024Q3
17
$511.4M
2024Q4
14
$390.9M
2025Q1
13
$301.5M
2025Q2
10
$544.7M
2025Q3
13
$477.4M
2025Q4
12
$415.2M

Who owns GKOS

12 super-investors · 2025Q4
Tracked stake
3.68M
shares
Combined value
$415M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added5Trim6
#ManagerSharesValue
1Izzy Englander
Millennium Mgmt
1.61M$182M
2D.E. Shaw & Co.558.3K$63M
3Norges Bank
Norway SWF
536.1K$61M
4Wellington Management486.8K$55M
5Steve Cohen
Point72
161.6K$18M
6T. Rowe Price122.2K$14M
7Two Sigma Investments98.7K$11M
8Ken Griffin
Citadel Advisors
30.9K$3M
9Ken Griffin
Citadel Advisors
27.0K$3M
10Ken Griffin
Citadel Advisors
26.9K$3M
11AQR Capital Management15.6K$2M
12Mario Gabelli
GAMCO
3.7K$418K

Recent moves

20 transactions
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