Squarepoint
MGNI icon

Squarepoint’s Magnite MGNI Stock Holding History

Squarepoint’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
-12,600
Closed -$204K – 4686
2025
Q4 		$204K Sell
12,600
-7,800
-38% -$129K ﹤0.01% 3856
2025
Q3 		$444K Sell
20,400
-149,100
-88% -$3.52M ﹤0.01% 3343
2025
Q2 		$4.09M Sell
169,500
-262,500
-61% -$3.87M ﹤0.01% 1599
2025
Q1 		$4.93M Sell
432,000
-450,000
-51% -$7.17M 0.01% 1431
2024
Q4 		$14M Buy
882,000
+811,900
+1,158% +$11.9M 0.01% 952
2024
Q3 		$971K Sell
70,100
-88,700
-56% -$1.21M ﹤0.01% 2628
2024
Q2 		$2.11M Sell
158,800
-391,600
-71% -$4.28M ﹤0.01% 2020
2024
Q1 		$5.92M Buy
550,400
+353,100
+179% +$3.53M 0.01% 1336
2023
Q4 		$1.84M Buy
197,300
+66,600
+51% +$526K ﹤0.01% 2057
2023
Q3 		$985K Buy
+130,700
New +$1.41M ﹤0.01% 2333

Other funds holding MGNI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Wellington Management Group
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
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Squarepoint's MGNI Position: Q1 2026 in Review

Squarepoint increased its Magnite (MGNI) stake by 562% in Q1 2026, buying an estimated $3.43M and bringing the position to 300,934 shares worth $3.58M. The position accounts for ﹤0.01% of the portfolio, ranked #1751.

Squarepoint first reported a position in MGNI in Q3 2016 and has held it in 24 quarters since. The position peaked at $11.8M in Q3 2024. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Squarepoint held 300,934 shares of Magnite worth $3.58M as of Q1 2026.
  • Squarepoint bought 255,496 Magnite shares in Q1 2026, an estimated $3.43M.
  • Magnite made up ﹤0.01% of Squarepoint's portfolio in Q1 2026, its #1751 holding.
  • Squarepoint first reported a position in Magnite in Q3 2016 and has held it in 24 quarters since.
  • Squarepoint's Magnite position peaked at $11.8M in Q3 2024.
  • 297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

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