Steven Cohen’s Magnite MGNI Stock Holding History

Steven Cohen’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 Q1	–	Sell	-23,500	Closed	-$381K	–	4211
2025 Q4	$381K	Buy	+23,500	New	+$390K	﹤0.01%	3372

Other funds holding MGNI

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

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

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 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

Steven Cohen's MGNI Position: Q4 2025 in Review

Steven Cohen sold out of Magnite (MGNI) in Q4 2025, closing a stake of 305,316 shares — an estimated $5.07M sold.

Steven Cohen first reported a position in MGNI in Q4 2014 and held it in 6 quarters. The position peaked at $6.65M in Q3 2025. 304 funds tracked by Wall St. Rank hold MGNI as of Q4 2025.

Steven Cohen reported no remaining Magnite position as of Q4 2025 after selling out during the quarter.
Steven Cohen sold 305,316 Magnite shares in Q4 2025, an estimated $5.07M.
Steven Cohen first reported a position in Magnite in Q4 2014 and held it in 6 quarters.
Steven Cohen's Magnite position peaked at $6.65M in Q3 2025.
304 funds tracked by Wall St. Rank held Magnite as of Q4 2025.

Based on Point72 Asset Management's 13F filing for Q4 2025, filed 17 Feb 2026.