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Maestria Partners’s Magnite MGNI Stock Holding History

Maestria Partners’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
2026
Q2 		$22M Sell
1,158,430
-205,075
-15% -$2.94M 7.65% 5
2026
Q1 		$16.2M Hold
1,363,505
– – 5.91% 9
2025
Q4 		$22.1M Buy
1,363,505
+222,334
+19% +$3.69M 6.48% 7
2025
Q3 		$24.9M Sell
1,141,171
-293,146
-20% -$6.92M 7.86% 5
2025
Q2 		$34.6M Buy
1,434,317
+382,000
+36% +$5.63M 12.02% 1
2025
Q1 		$12M Buy
1,052,317
+100,000
+11% +$1.59M 5.07% 10
2024
Q4 		$15.2M Buy
+952,317
New +$14M 6.01% 9

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

Maestria Partners's MGNI Position: Q2 2026 in Review

Maestria Partners reduced its Magnite (MGNI) stake by 15% in Q2 2026, selling an estimated $2.94M and leaving 1,158,430 shares worth $22M. The position accounts for 7.65% of the portfolio, ranked #5.

Maestria Partners first reported a position in MGNI in Q4 2024 and has held it in 7 quarters since. The position peaked at $34.6M in Q2 2025. 309 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Maestria Partners held 1,158,430 shares of Magnite worth $22M as of Q2 2026.
  • Maestria Partners sold 205,075 Magnite shares in Q2 2026, an estimated $2.94M.
  • Magnite made up 7.65% of Maestria Partners's portfolio in Q2 2026, its #5 holding.
  • Maestria Partners first reported a position in Magnite in Q4 2024 and has held it in 7 quarters since.
  • Maestria Partners's Magnite position peaked at $34.6M in Q2 2025.
  • 309 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Maestria Partners's 13F filing for Q2 2026, filed 5 Aug 2026.