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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 $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Edenbrook Capital's MGNI Position: Q2 2026 in Review

Edenbrook Capital increased its Magnite (MGNI) stake by 27% in Q2 2026, buying an estimated $10.9M and bringing the position to 3,555,615 shares worth $67.5M. The position accounts for 13.6% of the portfolio, ranked #2.

Edenbrook Capital first reported a position in MGNI in Q2 2020 and has held it in 25 quarters since. The position peaked at $87.1M in Q2 2025. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Edenbrook Capital held 3,555,615 shares of Magnite worth $67.5M as of Q2 2026.
  • Edenbrook Capital bought 757,579 Magnite shares in Q2 2026, an estimated $10.9M.
  • Magnite made up 13.6% of Edenbrook Capital's portfolio in Q2 2026, its #2 holding.
  • Edenbrook Capital first reported a position in Magnite in Q2 2020 and has held it in 25 quarters since.
  • Edenbrook Capital's Magnite position peaked at $87.1M in Q2 2025.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Edenbrook Capital's 13F filing for Q2 2026, filed 13 Aug 2026.