Optiver Holding
MGNI icon

Optiver Holding’s Magnite MGNI Stock Holding History

Optiver Holding’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 		$66.3K Buy
5,579
+5,383
+2,746% +$72.2K ﹤0.01% 924
2025
Q4 		$3.18K Sell
196
-228
-54% -$3.78K ﹤0.01% 1717
2025
Q3 		$9.23K Sell
424
-168
-28% -$3.97K ﹤0.01% 1350
2025
Q2 		$14.3K Hold
592
– – ﹤0.01% 914
2025
Q1 		$6.75K Hold
592
– – ﹤0.01% 1013
2024
Q4 		$9.43K Buy
592
+389
+192% +$5.71K ﹤0.01% 766
2024
Q3 		$2.81K Sell
203
-1,541
-88% -$21K ﹤0.01% 841
2024
Q2 		$23.2K Buy
+1,744
New +$19.1K ﹤0.01% 630

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

Optiver Holding's MGNI Position: Q1 2026 in Review

Optiver Holding increased its Magnite (MGNI) stake by 2,746% in Q1 2026, buying an estimated $72.2K and bringing the position to 5,579 shares worth $66.3K. The position accounts for ﹤0.01% of the portfolio, ranked #924.

Optiver Holding first reported a position in MGNI in Q2 2024 and has held it in 8 quarters since. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Optiver Holding held 5,579 shares of Magnite worth $66.3K as of Q1 2026.
  • Optiver Holding bought 5,383 Magnite shares in Q1 2026, an estimated $72.2K.
  • Magnite made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #924 holding.
  • Optiver Holding first reported a position in Magnite in Q2 2024 and has held it in 8 quarters since.
  • 297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

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