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 		$4.99M Buy
262,700
+138,000
+111% +$1.98M ﹤0.01% 2096
2026
Q1 		$1.48M Sell
124,700
-251,300
-67% -$3.37M ﹤0.01% 2870
2025
Q4 		$6.1M Sell
376,000
-40,800
-10% -$677K ﹤0.01% 1590
2025
Q3 		$9.08M Buy
416,800
+90,900
+28% +$2.15M ﹤0.01% 1199
2025
Q2 		$7.86M Buy
325,900
+196,400
+152% +$2.89M ﹤0.01% 1137
2025
Q1 		$1.48M Sell
129,500
-37,200
-22% -$593K ﹤0.01% 2002
2024
Q4 		$2.65M Sell
166,700
-1,900
-1% -$27.9K ﹤0.01% 1661
2024
Q3 		$2.34M Buy
168,600
+1,900
+1% +$25.9K ﹤0.01% 1576
2024
Q2 		$2.22M Buy
166,700
+108,500
+186% +$1.19M ﹤0.01% 1493
2024
Q1 		$626K Buy
58,200
+9,600
+20% +$95.9K ﹤0.01% 1947
2023
Q4 		$454K Sell
48,600
-300
-0.6% -$2.37K ﹤0.01% 1659
2023
Q3 		$369K Buy
+48,900
New +$527K ﹤0.01% 1488

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.