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Castleark Management’s Glaukos GKOS Stock Holding History

Castleark 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
Q2 		– Sell
-21,320
Closed -$2.1M – 301
2025
Q1 		$2.1M Sell
21,320
-30,020
-58% -$4M 0.07% 179
2024
Q4 		$7.7M Sell
51,340
-22,490
-30% -$3.1M 0.27% 74
2024
Q3 		$9.62M Sell
73,830
-640
-0.9% -$79.6K 0.39% 46
2024
Q2 		$8.81M Buy
74,470
+9,560
+15% +$1.01M 0.36% 48
2024
Q1 		$6.12M Sell
64,910
-2,650
-4% -$237K 0.25% 92
2023
Q4 		$5.37M Sell
67,560
-4,760
-7% -$325K 0.24% 100
2023
Q3 		$5.44M Buy
+72,320
New +$5.4M 0.28% 77
2022
Q4 		– Sell
-54,150
Closed -$2.88M – 297
2022
Q3 		$2.88M Sell
54,150
-1,250
-2% -$64.5K 0.16% 134
2022
Q2 		$2.52M Sell
55,400
-9,440
-15% -$448K 0.13% 141
2022
Q1 		$3.75M Buy
+64,840
New +$3.43M 0.16% 137
2021
Q3 		– Sell
-36,900
Closed -$3.13M – 347
2021
Q2 		$3.13M Buy
+36,900
New +$3.03M 0.11% 168
2019
Q3 		– Sell
-132,645
Closed -$10M – 362
2019
Q2 		$10M Buy
132,645
+10,910
+9% +$783K 0.38% 87
2019
Q1 		$9.54M Buy
+121,735
New +$8.13M 0.36% 90

Other funds holding GKOS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 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 $580B AUM 38.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 61.81% 1-Year Est. Return

Castleark Management's GKOS Position: Q2 2025 in Review

Castleark Management sold out of Glaukos (GKOS) in Q2 2025, closing a stake of 21,320 shares — an estimated $2.1M sold.

Castleark Management first reported a position in GKOS in Q1 2019 and held it in 13 quarters. The position peaked at $10M in Q2 2019. 297 funds tracked by Wall St. Rank hold GKOS as of Q2 2025.

  • Castleark Management reported no remaining Glaukos position as of Q2 2025 after selling out during the quarter.
  • Castleark Management sold 21,320 Glaukos shares in Q2 2025, an estimated $2.1M.
  • Castleark Management first reported a position in Glaukos in Q1 2019 and held it in 13 quarters.
  • Castleark Management's Glaukos position peaked at $10M in Q2 2019.
  • 297 funds tracked by Wall St. Rank held Glaukos as of Q2 2025.

Based on Castleark Management's 13F filing for Q2 2025, filed 18 Aug 2025.