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
Q2 		– Sell
-5,579
Closed -$66.3K – 2968
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 $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Optiver Holding's MGNI Position: Q2 2026 in Review

Optiver Holding sold out of Magnite (MGNI) in Q2 2026, closing a stake of 5,579 shares — an estimated $66.3K sold.

Optiver Holding first reported a position in MGNI in Q2 2024 and held it in 8 quarters. The position peaked at $66.3K in Q1 2026. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Optiver Holding reported no remaining Magnite position as of Q2 2026 after selling out during the quarter.
  • Optiver Holding sold 5,579 Magnite shares in Q2 2026, an estimated $66.3K.
  • Optiver Holding first reported a position in Magnite in Q2 2024 and held it in 8 quarters.
  • Optiver Holding's Magnite position peaked at $66.3K in Q1 2026.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.