IMC Chicago
MGNI icon

IMC Chicago’s Magnite MGNI Stock Holding History

IMC Chicago’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 		$2.56M Buy
134,800
+35,200
+35% +$504K ﹤0.01% 2770
2026
Q1 		$1.18M Sell
99,600
-25,600
-20% -$343K ﹤0.01% 3102
2025
Q4 		$2.03M Buy
125,200
+12,100
+11% +$201K ﹤0.01% 2407
2025
Q3 		$2.46M Buy
113,100
+32,900
+41% +$777K ﹤0.01% 2081
2025
Q2 		$1.93M Sell
80,200
-31,000
-28% -$457K ﹤0.01% 2027
2025
Q1 		$1.27M Sell
111,200
-27,400
-20% -$437K ﹤0.01% 2116
2024
Q4 		$2.21M Buy
138,600
+45,600
+49% +$669K ﹤0.01% 1800
2024
Q3 		$1.29M Buy
93,000
+7,700
+9% +$105K ﹤0.01% 1911
2024
Q2 		$1.13M Buy
85,300
+56,500
+196% +$618K ﹤0.01% 1886
2024
Q1 		$310K Buy
28,800
+1,400
+5% +$14K ﹤0.01% 2230
2023
Q4 		$256K Sell
27,400
-6,700
-20% -$52.9K ﹤0.01% 1767
2023
Q3 		$257K Buy
+34,100
New +$368K ﹤0.01% 1549

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

IMC Chicago's MGNI Position: Q2 2026 in Review

IMC Chicago increased its Magnite (MGNI) stake by 21% in Q2 2026, buying an estimated $82.1K and bringing the position to 33,508 shares worth $636K. The position accounts for ﹤0.01% of the portfolio, ranked #4374.

IMC Chicago first reported a position in MGNI in Q3 2023 and has held it in 10 quarters since. The position peaked at $2.16M in Q4 2025. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • IMC Chicago held 33,508 shares of Magnite worth $636K as of Q2 2026.
  • IMC Chicago bought 5,734 Magnite shares in Q2 2026, an estimated $82.1K.
  • Magnite made up ﹤0.01% of IMC Chicago's portfolio in Q2 2026, its #4374 holding.
  • IMC Chicago first reported a position in Magnite in Q3 2023 and has held it in 10 quarters since.
  • IMC Chicago's Magnite position peaked at $2.16M in Q4 2025.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on IMC Chicago's 13F filing for Q2 2026, filed 6 Aug 2026.