Marshall Wace
GKOS icon

Marshall Wace’s Glaukos GKOS Stock Holding History

Marshall Wace’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
Q2 		$44M Buy
314,804
+280,705
+823% +$35.5M 0.03% 424
2026
Q1 		$3.67M Buy
34,099
+26,855
+371% +$3.02M ﹤0.01% 1458
2025
Q4 		$818K Sell
7,244
-317,283
-98% -$30.3M ﹤0.01% 2030
2025
Q3 		$26.5M Buy
324,527
+93,842
+41% +$8.62M 0.03% 538
2025
Q2 		$23.8M Sell
230,685
-114,086
-33% -$10.7M 0.03% 522
2025
Q1 		$33.9M Buy
+344,771
New +$46M 0.04% 372
2024
Q4 		– Sell
-128,803
Closed -$16.8M – 2736
2024
Q3 		$16.8M Buy
+128,803
New +$16M 0.02% 572
2024
Q2 		– Sell
-3,200
Closed -$302K – 2692
2024
Q1 		$302K Sell
3,200
-69,928
-96% -$6.25M ﹤0.01% 2111
2023
Q4 		$5.81M Buy
+73,128
New +$4.99M 0.01% 862
2023
Q2 		– Sell
-6,637
Closed -$333K – 2639
2023
Q1 		$333K Buy
+6,637
New +$322K ﹤0.01% 2258
2022
Q4 		– Sell
-4,800
Closed -$256K – 3111
2022
Q3 		$256K Sell
4,800
-3,144
-40% -$162K ﹤0.01% 2999
2022
Q2 		$361K Sell
7,944
-1,820
-19% -$86.4K ﹤0.01% 2948
2022
Q1 		$565K Sell
9,764
-415,771
-98% -$22M ﹤0.01% 2722
2021
Q4 		$18.9M Sell
425,535
-247,228
-37% -$11.4M 0.03% 512
2021
Q3 		$32.4M Buy
672,763
+668,934
+17,470% +$37.1M 0.13% 147
2021
Q2 		$325K Sell
3,829
-4,488
-54% -$369K ﹤0.01% 2299
2021
Q1 		$698K Sell
8,317
-4,950
-37% -$435K ﹤0.01% 1807
2020
Q4 		$999K Buy
+13,267
New +$838K 0.01% 1210
2017
Q1 		– Sell
-39,794
Closed -$1.36M – 463
2016
Q4 		$1.36M Buy
+39,794
New +$1.36M 0.01% 714
2016
Q3 		– Sell
-139,766
Closed -$4.08M – 1010
2016
Q2 		$4.08M Buy
+139,766
New +$3.24M 0.03% 434

Other funds holding GKOS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $44.4B AUM 57.89% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Marshall Wace's GKOS Position: Q2 2026 in Review

Marshall Wace increased its Glaukos (GKOS) stake by 823% in Q2 2026, buying an estimated $35.5M and bringing the position to 314,804 shares worth $44M. The position accounts for 0.03% of the portfolio, ranked #424.

Marshall Wace first reported a position in GKOS in Q2 2016 and has held it in 20 quarters since. 367 funds tracked by Wall St. Rank hold GKOS as of Q2 2026.

  • Marshall Wace held 314,804 shares of Glaukos worth $44M as of Q2 2026.
  • Marshall Wace bought 280,705 Glaukos shares in Q2 2026, an estimated $35.5M.
  • Glaukos made up 0.03% of Marshall Wace's portfolio in Q2 2026, its #424 holding.
  • Marshall Wace first reported a position in Glaukos in Q2 2016 and has held it in 20 quarters since.
  • 367 funds tracked by Wall St. Rank held Glaukos as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.