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 Q1	–	Sell	-50,000	Closed	-$797K	–	411
2024 Q4	$796K	Buy	+50,000	New	+$734K	0.02%	251

Other funds holding MGNI

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

Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

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.