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Zweig-DiMenna Associates’s Magnite MGNI Stock Holding History

Zweig-DiMenna Associates’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
Q4 		– Sell
-99,900
Closed -$2.18M – 112
2025
Q3 		$2.18M Sell
99,900
-11,600
-10% -$274K 0.15% 94
2025
Q2 		$2.69M Buy
+111,500
New +$1.64M 0.25% 75

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Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Zweig-DiMenna Associates's MGNI Position: Q4 2025 in Review

Zweig-DiMenna Associates sold out of Magnite (MGNI) in Q4 2025, closing a stake of 99,900 shares — an estimated $2.18M sold.

Zweig-DiMenna Associates first reported a position in MGNI in Q2 2025 and held it in 2 quarters. The position peaked at $2.69M in Q2 2025. 304 funds tracked by Wall St. Rank hold MGNI as of Q4 2025.

  • Zweig-DiMenna Associates reported no remaining Magnite position as of Q4 2025 after selling out during the quarter.
  • Zweig-DiMenna Associates sold 99,900 Magnite shares in Q4 2025, an estimated $2.18M.
  • Zweig-DiMenna Associates first reported a position in Magnite in Q2 2025 and held it in 2 quarters.
  • Zweig-DiMenna Associates's Magnite position peaked at $2.69M in Q2 2025.
  • 304 funds tracked by Wall St. Rank held Magnite as of Q4 2025.

Based on Zweig-DiMenna Associates's 13F filing for Q4 2025, filed 10 Feb 2026.