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EFG Asset Management’s Magnite MGNI Stock Holding History

EFG Asset Management’s Portfolio MGNI Stock Details MGNI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		$3.28M Sell
150,511
-50,491
-25% -$1.19M 0.42% 106
2025
Q2 		$4.85M Sell
201,002
-35,503
-15% -$523K 0.68% 48
2025
Q1 		$2.7M Buy
236,505
+38,735
+20% +$618K 0.45% 86
2024
Q4 		$3.15M Buy
197,770
+96,895
+96% +$1.42M 0.43% 88
2024
Q3 		$1.4M Buy
+100,875
New +$1.37M 0.23% 167

Other funds holding MGNI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

EFG Asset Management's MGNI Position: Q3 2025 in Review

EFG Asset Management reduced its Magnite (MGNI) stake by 25% in Q3 2025, selling an estimated $1.19M and leaving 150,511 shares worth $3.28M. The position accounts for 0.42% of the portfolio, ranked #106.

EFG Asset Management first reported a position in MGNI in Q3 2024 and has held it in 5 quarters since. The position peaked at $4.85M in Q2 2025. 316 funds tracked by Wall St. Rank hold MGNI as of Q3 2025.

  • EFG Asset Management held 150,511 shares of Magnite worth $3.28M as of Q3 2025.
  • EFG Asset Management sold 50,491 Magnite shares in Q3 2025, an estimated $1.19M.
  • Magnite made up 0.42% of EFG Asset Management's portfolio in Q3 2025, its #106 holding.
  • EFG Asset Management first reported a position in Magnite in Q3 2024 and has held it in 5 quarters since.
  • EFG Asset Management's Magnite position peaked at $4.85M in Q2 2025.
  • 316 funds tracked by Wall St. Rank held Magnite as of Q3 2025.

Based on EFG Asset Management's 13F filing for Q3 2025, filed 3 Nov 2025.