Citigroup
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Citigroup’s Magnite MGNI Stock Holding History

Citigroup’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
2025
Q4 		– Sell
-106,100
Closed -$2.31M – 6297
2025
Q3 		$2.31M Buy
+106,100
New +$2.51M ﹤0.01% 2556

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

Citigroup's MGNI Position: Q1 2026 in Review

Citigroup reduced its Magnite (MGNI) stake by 69% in Q1 2026, selling an estimated $477K and leaving 15,860 shares worth $188K. The position accounts for ﹤0.01% of the portfolio, ranked #4029.

Citigroup first reported a position in MGNI in Q2 2014 and has held it in 48 quarters since. The position peaked at $7.89M in Q3 2021. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Citigroup held 15,860 shares of Magnite worth $188K as of Q1 2026.
  • Citigroup sold 35,564 Magnite shares in Q1 2026, an estimated $477K.
  • Magnite made up ﹤0.01% of Citigroup's portfolio in Q1 2026, its #4029 holding.
  • Citigroup first reported a position in Magnite in Q2 2014 and has held it in 48 quarters since.
  • Citigroup's Magnite position peaked at $7.89M in Q3 2021.
  • 296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Citigroup's 13F filing for Q1 2026, filed 11 May 2026.