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UBS O'Connor’s Magnite MGNI Stock Holding History

UBS O'Connor’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 		$800 Sell
32,000
-200,000
-86% -$3.32M ﹤0.01% 236
2025
Q3 		$454K Sell
232,000
-200,000
-46% -$4.72M 0.01% 208
2025
Q2 		$1.93M Buy
432,000
+325,000
+304% +$4.79M 0.05% 165
2025
Q1 		$48.1K Hold
107,000
– – ﹤0.01% 286
2024
Q4 		$241K Hold
107,000
– – 0.01% 318
2024
Q3 		$198K Buy
+107,000
New +$1.46M ﹤0.01% 389

Other funds holding MGNI

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
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

UBS O'Connor's MGNI Position: Q1 2025 in Review

UBS O'Connor sold out of Magnite (MGNI) in Q1 2025, closing a stake of 50,000 shares — an estimated $797K sold.

UBS O'Connor first reported a position in MGNI in Q4 2024 and held it in 1 quarter. The position peaked at $796K in Q4 2024. 293 funds tracked by Wall St. Rank hold MGNI as of Q1 2025.

  • UBS O'Connor reported no remaining Magnite position as of Q1 2025 after selling out during the quarter.
  • UBS O'Connor sold 50,000 Magnite shares in Q1 2025, an estimated $797K.
  • UBS O'Connor first reported a position in Magnite in Q4 2024 and held it in 1 quarter.
  • UBS O'Connor's Magnite position peaked at $796K in Q4 2024.
  • 293 funds tracked by Wall St. Rank held Magnite as of Q1 2025.

Based on UBS O'Connor's 13F filing for Q1 2025, filed 15 May 2025.