Diametric Capital’s Magnite MGNI Stock Holding History

Diametric 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	$413K	Sell	34,783 -14,921	-30%	-$200K	0.11%	270
2025 Q4	$807K	Buy	49,704 +28,082	+130%	+$466K	0.22%	123
2025 Q3	$471K	Sell	21,622 -11,537	-35%	-$272K	0.17%	159
2025 Q2	$800K	Buy	33,159 +21,912	+195%	+$323K	0.43%	59
2025 Q1	$128K	Sell	11,247 -3,974	-26%	-$63.4K	0.15%	155
2024 Q4	$242K	Buy	+15,221	New	+$223K	0.16%	194
2024 Q3	–	Sell	-13,424	Closed	-$178K	–	447
2024 Q2	$178K	Buy	+13,424	New	+$147K	0.1%	283
2022 Q1	–	Sell	-14,802	Closed	-$259K	–	283
2021 Q4	$259K	Buy	+14,802	New	+$334K	0.2%	108
2021 Q3	–	Sell	-9,811	Closed	-$332K	–	151
2021 Q2	$332K	Buy	+9,811	New	+$332K	0.24%	95

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

Diametric Capital's MGNI Position: Q1 2026 in Review

Diametric Capital reduced its Magnite (MGNI) stake by 30% in Q1 2026, selling an estimated $200K and leaving 34,783 shares worth $413K. The position accounts for 0.11% of the portfolio, ranked #270.

Diametric Capital first reported a position in MGNI in Q2 2021 and has held it in 9 quarters since. The position peaked at $807K in Q4 2025. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

Diametric Capital held 34,783 shares of Magnite worth $413K as of Q1 2026.
Diametric Capital sold 14,921 Magnite shares in Q1 2026, an estimated $200K.
Magnite made up 0.11% of Diametric Capital's portfolio in Q1 2026, its #270 holding.
Diametric Capital first reported a position in Magnite in Q2 2021 and has held it in 9 quarters since.
Diametric Capital's Magnite position peaked at $807K in Q4 2025.
297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Diametric Capital's 13F filing for Q1 2026, filed 15 May 2026.