Walleye Capital’s Magnite MGNI Stock Holding History

Walleye 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 Q1	$463K	Sell	39,000 -23,300	-37%	-$312K	﹤0.01%	2730
2025 Q4	$1.01M	Sell	62,300 -2,100	-3%	-$34.9K	﹤0.01%	2419
2025 Q3	$1.4M	Buy	64,400 +61,300	+1,977%	+$1.45M	0.01%	1838
2025 Q2	$74.8K	Sell	3,100 -25,200	-89%	-$371K	﹤0.01%	3900
2025 Q1	$323K	Buy	28,300 +4,400	+18%	+$70.2K	﹤0.01%	2898
2024 Q4	$380K	Buy	23,900 +4,400	+23%	+$64.6K	﹤0.01%	3215
2024 Q3	$270K	Buy	19,500 +13,700	+236%	+$187K	﹤0.01%	3791
2024 Q2	$77.1K	Sell	5,800 -6,500	-53%	-$71.1K	﹤0.01%	4811
2024 Q1	$132K	Buy	+12,300	New	+$123K	﹤0.01%	4227
2023 Q4	–	Sell	-100	Closed	-$754	–	5292
2023 Q3	$754	Buy	+100	New	+$1.08K	﹤0.01%	4776

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

Walleye Capital's MGNI Position: Q1 2026 in Review

Walleye Capital reduced its Magnite (MGNI) stake by 70% in Q1 2026, selling an estimated $240K and leaving 7,633 shares worth $90.7K. The position accounts for ﹤0.01% of the portfolio, ranked #3705.

Walleye Capital first reported a position in MGNI in Q3 2018 and has held it in 11 quarters since. The position peaked at $1.56M in Q3 2022. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

Walleye Capital held 7,633 shares of Magnite worth $90.7K as of Q1 2026.
Walleye Capital sold 17,924 Magnite shares in Q1 2026, an estimated $240K.
Magnite made up ﹤0.01% of Walleye Capital's portfolio in Q1 2026, its #3705 holding.
Walleye Capital first reported a position in Magnite in Q3 2018 and has held it in 11 quarters since.
Walleye Capital's Magnite position peaked at $1.56M in Q3 2022.
297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Walleye Capital's 13F filing for Q1 2026, filed 11 May 2026.