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
2023 Q3	–	Sell	-567	Closed	-$4.04M	–	82
2023 Q2	$4.04M	Buy	+567	New	+$32.6K	0.4%	67

Other funds holding GKOS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

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.