JG
GKOS icon

Joel Greenblatt’s Glaukos GKOS Stock Holding History

Joel Greenblatt’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
2026
Q1 		– Sell
-2,666
Closed -$301K – 1797
2025
Q4 		$301K Buy
+2,666
New +$255K ﹤0.01% 1561
2024
Q3 		– Sell
-2,407
Closed -$285K – 1455
2024
Q2 		$285K Buy
+2,407
New +$256K ﹤0.01% 1239
2021
Q2 		– Sell
-3,208
Closed -$269K – 1036
2021
Q1 		$269K Buy
+3,208
New +$282K 0.01% 877

Other funds holding GKOS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
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
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $44.4B AUM 57.89% 1-Year Est. Return

Joel Greenblatt's GKOS Position: Q1 2026 in Review

Joel Greenblatt sold out of Glaukos (GKOS) in Q1 2026, closing a stake of 2,666 shares — an estimated $301K sold.

Joel Greenblatt first reported a position in GKOS in Q1 2021 and held it in 3 quarters. The position peaked at $301K in Q4 2025. 336 funds tracked by Wall St. Rank hold GKOS as of Q1 2026.

  • Joel Greenblatt reported no remaining Glaukos position as of Q1 2026 after selling out during the quarter.
  • Joel Greenblatt sold 2,666 Glaukos shares in Q1 2026, an estimated $301K.
  • Joel Greenblatt first reported a position in Glaukos in Q1 2021 and held it in 3 quarters.
  • Joel Greenblatt's Glaukos position peaked at $301K in Q4 2025.
  • 336 funds tracked by Wall St. Rank held Glaukos as of Q1 2026.

Based on Gotham Asset Management's 13F filing for Q1 2026, filed 15 May 2026.