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Zweig-DiMenna Associates’s Glaukos GKOS Stock Holding History

Zweig-DiMenna Associates’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
Q3 		– Sell
-8,600
Closed -$888K – 105
2025
Q2 		$888K Sell
8,600
-52,200
-86% -$4.9M 0.08% 84
2025
Q1 		$5.98M Buy
60,800
+2,135
+4% +$285K 0.95% 38
2024
Q4 		$8.8M Buy
+58,665
New +$8.08M 0.66% 50

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
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return

Zweig-DiMenna Associates's GKOS Position: Q3 2025 in Review

Zweig-DiMenna Associates sold out of Glaukos (GKOS) in Q3 2025, closing a stake of 8,600 shares — an estimated $888K sold.

Zweig-DiMenna Associates first reported a position in GKOS in Q4 2024 and held it in 3 quarters. The position peaked at $8.8M in Q4 2024. 315 funds tracked by Wall St. Rank hold GKOS as of Q3 2025.

  • Zweig-DiMenna Associates reported no remaining Glaukos position as of Q3 2025 after selling out during the quarter.
  • Zweig-DiMenna Associates sold 8,600 Glaukos shares in Q3 2025, an estimated $888K.
  • Zweig-DiMenna Associates first reported a position in Glaukos in Q4 2024 and held it in 3 quarters.
  • Zweig-DiMenna Associates's Glaukos position peaked at $8.8M in Q4 2024.
  • 315 funds tracked by Wall St. Rank held Glaukos as of Q3 2025.

Based on Zweig-DiMenna Associates's 13F filing for Q3 2025, filed 7 Nov 2025.