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Edenbrook Capital’s Magnite MGNI Stock Holding History

Edenbrook Capital’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
2021
Q3 		– Sell
-1,130,000
Closed -$38.2M – 25
2021
Q2 		$38.2M Hold
1,130,000
– – 3.79% 11
2021
Q1 		$47M Buy
+1,130,000
New +$48.9M 4.43% 8

Other funds holding MGNI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Edenbrook Capital's MGNI Position: Q1 2026 in Review

Edenbrook Capital increased its Magnite (MGNI) stake by 0.36% in Q1 2026, buying an estimated $134K and bringing the position to 2,798,036 shares worth $33.2M. The position accounts for 10.35% of the portfolio, ranked #3.

Edenbrook Capital first reported a position in MGNI in Q2 2020 and has held it in 24 quarters since. The position peaked at $87.1M in Q2 2025. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Edenbrook Capital held 2,798,036 shares of Magnite worth $33.2M as of Q1 2026.
  • Edenbrook Capital bought 10,000 Magnite shares in Q1 2026, an estimated $134K.
  • Magnite made up 10.35% of Edenbrook Capital's portfolio in Q1 2026, its #3 holding.
  • Edenbrook Capital first reported a position in Magnite in Q2 2020 and has held it in 24 quarters since.
  • Edenbrook Capital's Magnite position peaked at $87.1M in Q2 2025.
  • 296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Edenbrook Capital's 13F filing for Q1 2026, filed 14 May 2026.