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Two Sigma Securities’s Magnite MGNI Stock Holding History

Two Sigma Securities’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
2021
Q3 		– Sell
-8,300
Closed -$281K – 1786
2021
Q2 		$281K Buy
+8,300
New +$281K 0.01% 1033
2021
Q1 		– Sell
-9,900
Closed -$304K – 1406
2020
Q4 		$304K Buy
+9,900
New +$150K 0.01% 1038

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 Securities's MGNI Position: Q1 2026 in Review

Two Sigma Securities opened a new position in Magnite (MGNI) in Q1 2026: 12,031 shares worth $143K. The stake represents 0.02% of the portfolio and ranks #1114 among its holdings. This is a return to the name: Two Sigma Securities previously reported a position in MGNI as recently as Q2 2025.

Two Sigma Securities first reported a position in MGNI in Q1 2017 and has held it in 7 quarters since. The position peaked at $488K in Q4 2022. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Two Sigma Securities held 12,031 shares of Magnite worth $143K as of Q1 2026.
  • Magnite was a new Two Sigma Securities position in Q1 2026.
  • Magnite made up 0.02% of Two Sigma Securities's portfolio in Q1 2026, its #1114 holding.
  • Two Sigma Securities first reported a position in Magnite in Q1 2017 and has held it in 7 quarters since.
  • Two Sigma Securities's Magnite position peaked at $488K in Q4 2022.
  • 296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

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