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Atika Capital Management’s Glaukos GKOS Stock Holding History

Atika Capital Management’s Portfolio GKOS Stock Details GKOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-212,400
Closed -$17.3M – 91
2025
Q3 		$17.3M Sell
212,400
-107,100
-34% -$9.83M 1.39% 25
2025
Q2 		$33M Buy
319,500
+56,000
+21% +$5.25M 3.3% 6
2025
Q1 		$25.9M Buy
263,500
+24,000
+10% +$3.2M 3.65% 9
2024
Q4 		$35.9M Sell
239,500
-1,500
-0.6% -$207K 3.81% 6
2024
Q3 		$31.4M Buy
241,000
+1,000
+0.4% +$124K 3.22% 7
2024
Q2 		$28.4M Buy
240,000
+65,000
+37% +$6.9M 2.78% 8
2024
Q1 		$16.5M Buy
175,000
+50,032
+40% +$4.47M 1.63% 16
2023
Q4 		$9.93M Sell
124,968
-90,232
-42% -$6.15M 1.33% 29
2023
Q3 		$16.2M Buy
215,200
+32,200
+18% +$2.4M 2.13% 16
2023
Q2 		$13M Buy
+183,000
New +$10.5M 1.3% 26
2017
Q3 		– Sell
-18,000
Closed -$746K – 84
2017
Q2 		$746K Sell
18,000
-70,000
-80% -$3.02M 0.26% 74
2017
Q1 		$4.51M Sell
88,000
-42,000
-32% -$1.83M 2.21% 12
2016
Q4 		$4.46M Buy
130,000
+1,600
+1% +$54.8K 2.65% 13
2016
Q3 		$4.85M Buy
128,400
+15,400
+14% +$510K 1.98% 15
2016
Q2 		$3.3M Buy
+113,000
New +$2.62M 1.41% 24

Other funds holding GKOS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Atika Capital Management's GKOS Position: Q4 2025 in Review

Atika Capital Management sold out of Glaukos (GKOS) in Q4 2025, closing a stake of 212,400 shares — an estimated $17.3M sold.

Atika Capital Management first reported a position in GKOS in Q2 2016 and held it in 15 quarters. The position peaked at $35.9M in Q4 2024. 332 funds tracked by Wall St. Rank hold GKOS as of Q4 2025.

  • Atika Capital Management reported no remaining Glaukos position as of Q4 2025 after selling out during the quarter.
  • Atika Capital Management sold 212,400 Glaukos shares in Q4 2025, an estimated $17.3M.
  • Atika Capital Management first reported a position in Glaukos in Q2 2016 and held it in 15 quarters.
  • Atika Capital Management's Glaukos position peaked at $35.9M in Q4 2024.
  • 332 funds tracked by Wall St. Rank held Glaukos as of Q4 2025.

Based on Atika Capital Management's 13F filing for Q4 2025, filed 13 Feb 2026.