Quadrature Capital’s Magnite MGNI Stock Holding History

Quadrature Capital’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 Q2	$363K	Buy	+19,145	New	+$274K	﹤0.01%	1133
2022 Q2	–	Sell	-46,415	Closed	-$613K	–	875
2022 Q1	$613K	Buy	46,415 +32,560	+235%	+$439K	0.02%	360
2021 Q4	$242K	Sell	13,855 -3,042	-18%	-$68.6K	0.01%	538
2021 Q3	$473K	Sell	16,897 -55,060	-77%	-$1.66M	0.02%	393
2021 Q2	$2.44M	Sell	71,957 -23,658	-25%	-$802K	0.09%	165
2021 Q1	$3.98M	Buy	+95,615	New	+$4.14M	0.19%	111
2019 Q4	–	Sell	-43,763	Closed	-$381K	–	633
2019 Q3	$381K	Buy	+43,763	New	+$384K	0.02%	430
2016 Q3	–	Sell	-19,995	Closed	-$273K	–	668
2016 Q2	$273K	Buy	+19,995	New	+$322K	0.02%	448

Other funds holding MGNI

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 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

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

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

Quadrature Capital's MGNI Position: Q2 2026 in Review

Quadrature Capital opened a new position in Magnite (MGNI) in Q2 2026: 19,145 shares worth $363K. The stake represents ﹤0.01% of the portfolio and ranks #1133 among its holdings. This is a return to the name: Quadrature Capital previously reported a position in MGNI as recently as Q1 2022.

Quadrature Capital first reported a position in MGNI in Q2 2016 and has held it in 8 quarters since. The position peaked at $3.98M in Q1 2021. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

Quadrature Capital held 19,145 shares of Magnite worth $363K as of Q2 2026.
Magnite was a new Quadrature Capital position in Q2 2026.
Magnite made up ﹤0.01% of Quadrature Capital's portfolio in Q2 2026, its #1133 holding.
Quadrature Capital first reported a position in Magnite in Q2 2016 and has held it in 8 quarters since.
Quadrature Capital's Magnite position peaked at $3.98M in Q1 2021.
311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Quadrature Capital's 13F filing for Q2 2026, filed 7 Aug 2026.