Two Sigma Investments
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Two Sigma Investments’s Magnite MGNI Stock Holding History

Two Sigma Investments’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
Q1 		– Sell
-97,200
Closed -$1.7M – 3677
2021
Q4 		$1.7M Buy
97,200
+53,800
+124% +$1.21M ﹤0.01% 2072
2021
Q3 		$1.22M Sell
43,400
-10,300
-19% -$310K ﹤0.01% 2436
2021
Q2 		$1.82M Buy
53,700
+3,200
+6% +$108K ﹤0.01% 1950
2021
Q1 		$2.1M Buy
+50,500
New +$2.19M 0.01% 1673

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

Two Sigma Investments's MGNI Position: Q1 2026 in Review

Two Sigma Investments increased its Magnite (MGNI) stake by 8.7% in Q1 2026, buying an estimated $422K and bringing the position to 394,856 shares worth $4.69M. The position accounts for ﹤0.01% of the portfolio, ranked #2035.

Two Sigma Investments first reported a position in MGNI in Q2 2015 and has held it in 40 quarters since. The position peaked at $23.9M in Q3 2021. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Two Sigma Investments held 394,856 shares of Magnite worth $4.69M as of Q1 2026.
  • Two Sigma Investments bought 31,444 Magnite shares in Q1 2026, an estimated $422K.
  • Magnite made up ﹤0.01% of Two Sigma Investments's portfolio in Q1 2026, its #2035 holding.
  • Two Sigma Investments first reported a position in Magnite in Q2 2015 and has held it in 40 quarters since.
  • Two Sigma Investments's Magnite position peaked at $23.9M in Q3 2021.
  • 297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.