Westfield Capital Management
GKOS icon

Westfield Capital Management’s Glaukos GKOS Stock Holding History

Westfield 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
2026
Q2 		$67.6M Buy
483,411
+1,192
+0.2% +$151K 0.22% 128
2026
Q1 		$51.9M Buy
+482,219
New +$54.3M 0.22% 140
2025
Q4 		– Sell
-1,231,641
Closed -$100M – 251
2025
Q3 		$100M Buy
1,231,641
+63,788
+5% +$5.86M 0.42% 67
2025
Q2 		$121M Buy
1,167,853
+83,669
+8% +$7.85M 0.51% 49
2025
Q1 		$107M Buy
1,084,184
+277,033
+34% +$37M 0.52% 55
2024
Q4 		$121M Buy
807,151
+804,614
+31,715% +$111M 0.53% 54
2024
Q3 		$331K Buy
+2,537
New +$316K ﹤0.01% 246

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 $3.37T AUM 44.26% 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 40.91% 1-Year Est. Return

Westfield Capital Management's GKOS Position: Q2 2026 in Review

Westfield Capital Management increased its Glaukos (GKOS) stake by 0.25% in Q2 2026, buying an estimated $151K and bringing the position to 483,411 shares worth $67.6M. The position accounts for 0.22% of the portfolio, ranked #128.

Westfield Capital Management first reported a position in GKOS in Q3 2024 and has held it in 7 quarters since. The position peaked at $121M in Q4 2024. 365 funds tracked by Wall St. Rank hold GKOS as of Q2 2026.

  • Westfield Capital Management held 483,411 shares of Glaukos worth $67.6M as of Q2 2026.
  • Westfield Capital Management bought 1,192 Glaukos shares in Q2 2026, an estimated $151K.
  • Glaukos made up 0.22% of Westfield Capital Management's portfolio in Q2 2026, its #128 holding.
  • Westfield Capital Management first reported a position in Glaukos in Q3 2024 and has held it in 7 quarters since.
  • Westfield Capital Management's Glaukos position peaked at $121M in Q4 2024.
  • 365 funds tracked by Wall St. Rank held Glaukos as of Q2 2026.

Based on Westfield Capital Management's 13F filing for Q2 2026, filed 12 Aug 2026.