Laurion Capital Management’s Magnite MGNI Stock Holding History

Laurion Capital Management’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	-50,869	Closed	-$826K	–	443
2025 Q4	$826K	Buy	+50,869	New	+$844K	0.03%	156
2019 Q2	–	Sell	-253,319	Closed	-$1.54M	–	1076
2019 Q1	$1.54M	Buy	253,319 +147,896	+140%	+$761K	0.02%	438
2018 Q4	$393K	Buy	+105,423	New	+$403K	0.01%	743
2018 Q3	–	Sell	-30,500	Closed	-$87K	–	1401
2018 Q2	$87K	Buy	+30,500	New	+$72.6K	﹤0.01%	1256
2017 Q2	–	Sell	-10,922	Closed	-$64K	–	1771
2017 Q1	$64K	Buy	+10,922	New	+$85.1K	﹤0.01%	1244
2016 Q2	–	Sell	-15,755	Closed	-$288K	–	943
2016 Q1	$288K	Buy	+15,755	New	+$241K	﹤0.01%	606
2014 Q3	–	Sell	-11,700	Closed	-$150K	–	357
2014 Q2	$150K	Buy	+11,700	New	+$176K	﹤0.01%	264

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

Laurion Capital Management's MGNI Position: Q1 2026 in Review

Laurion Capital Management sold out of Magnite (MGNI) in Q1 2026, closing a stake of 50,869 shares — an estimated $826K sold.

Laurion Capital Management first reported a position in MGNI in Q2 2014 and held it in 7 quarters. The position peaked at $1.54M in Q1 2019. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

Laurion Capital Management reported no remaining Magnite position as of Q1 2026 after selling out during the quarter.
Laurion Capital Management sold 50,869 Magnite shares in Q1 2026, an estimated $826K.
Laurion Capital Management first reported a position in Magnite in Q2 2014 and held it in 7 quarters.
Laurion Capital Management's Magnite position peaked at $1.54M in Q1 2019.
297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Laurion Capital Management's 13F filing for Q1 2026, filed 14 May 2026.