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
2022
Q4 		– Sell
-50,000
Closed -$329K – 5880
2022
Q3 		$329K Hold
50,000
– – ﹤0.01% 3510
2022
Q2 		$444K Hold
50,000
– – ﹤0.01% 3313
2022
Q1 		$661K Hold
50,000
– – ﹤0.01% 3312
2021
Q4 		$875K Hold
50,000
– – ﹤0.01% 3383
2021
Q3 		$1.4M Buy
+50,000
New +$1.5M ﹤0.01% 2824

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

Citigroup's MGNI Position: Q2 2026 in Review

Citigroup increased its Magnite (MGNI) stake by 453% in Q2 2026, buying an estimated $1.03M and bringing the position to 87,702 shares worth $1.66M. The position accounts for ﹤0.01% of the portfolio, ranked #3070.

Citigroup first reported a position in MGNI in Q2 2014 and has held it in 49 quarters since. The position peaked at $7.89M in Q3 2021. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Citigroup held 87,702 shares of Magnite worth $1.66M as of Q2 2026.
  • Citigroup bought 71,842 Magnite shares in Q2 2026, an estimated $1.03M.
  • Magnite made up ﹤0.01% of Citigroup's portfolio in Q2 2026, its #3070 holding.
  • Citigroup first reported a position in Magnite in Q2 2014 and has held it in 49 quarters since.
  • Citigroup's Magnite position peaked at $7.89M in Q3 2021.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Citigroup's 13F filing for Q2 2026, filed 3 Aug 2026.