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Michael J. Porro & Co’s Glaukos GKOS Stock Holding History

Michael J. Porro & Co’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
Q3 		$871K Sell
5,303
-144
-3% -$24.1K 0.53% 65
2026
Q2 		$761K Sell
5,447
-100
-2% -$12.7K 0.43% 71
2026
Q1 		$597K Sell
5,547
-24
-0.4% -$2.7K 0.47% 73
2025
Q4 		$629K Buy
+5,571
New +$532K 0.53% 67

Other funds holding GKOS

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Primecap Management
Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $824B AUM 37.44% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 42.55% 1-Year Est. Return

Michael J. Porro & Co's GKOS Position: Q3 2026 in Review

Michael J. Porro & Co reduced its Glaukos (GKOS) stake by 2.6% in Q3 2026, selling an estimated $24.1K and leaving 5,303 shares worth $871K. The position accounts for 0.53% of the portfolio, ranked #65.

Michael J. Porro & Co first reported a position in GKOS in Q4 2025 and has held it in 4 quarters since. 326 funds tracked by Wall St. Rank hold GKOS as of Q3 2026.

  • Michael J. Porro & Co held 5,303 shares of Glaukos worth $871K as of Q3 2026.
  • Michael J. Porro & Co sold 144 Glaukos shares in Q3 2026, an estimated $24.1K.
  • Glaukos made up 0.53% of Michael J. Porro & Co's portfolio in Q3 2026, its #65 holding.
  • Michael J. Porro & Co first reported a position in Glaukos in Q4 2025 and has held it in 4 quarters since.
  • 326 funds tracked by Wall St. Rank held Glaukos as of Q3 2026.

Based on Michael J. Porro & Co's 13F filing for Q3 2026, filed 16 Oct 2026.