J. Goldman & Co’s Magnite MGNI Stock Holding History

J. Goldman & Co’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	-103,000	Closed	-$2.24M	–	669
2025 Q3	$2.24M	Buy	103,000 +93,000	+930%	+$2.2M	0.06%	270
2025 Q2	$241K	Buy	+10,000	New	+$147K	0.01%	411
2024 Q4	–	Sell	-360,000	Closed	-$4.99M	–	563
2024 Q3	$4.99M	Buy	+360,000	New	+$4.91M	0.14%	163
2017 Q3	–	Sell	-35,000	Closed	-$180K	–	369
2017 Q2	$180K	Buy	+35,000	New	+$192K	0.01%	282

Other funds holding MGNI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

J. Goldman & Co's MGNI Position: Q1 2026 in Review

J. Goldman & Co sold out of Magnite (MGNI) in Q1 2026, closing a stake of 782,837 shares — an estimated $12.7M sold.

J. Goldman & Co first reported a position in MGNI in Q3 2014 and held it in 9 quarters. The position peaked at $22.4M in Q3 2025. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

J. Goldman & Co reported no remaining Magnite position as of Q1 2026 after selling out during the quarter.
J. Goldman & Co sold 782,837 Magnite shares in Q1 2026, an estimated $12.7M.
J. Goldman & Co first reported a position in Magnite in Q3 2014 and held it in 9 quarters.
J. Goldman & Co's Magnite position peaked at $22.4M in Q3 2025.
297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on J. Goldman & Co's 13F filing for Q1 2026, filed 15 May 2026.