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Campbell & Co Investment Adviser’s Magnite MGNI Stock Holding History

Campbell & Co Investment Adviser’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
-132,785
Closed -$2.89M – 1297
2025
Q3 		$2.89M Buy
+132,785
New +$3.14M 0.22% 104
2022
Q3 		– Sell
-21,393
Closed -$190K – 835
2022
Q2 		$190K Buy
+21,393
New +$229K 0.05% 613
2022
Q1 		– Sell
-13,700
Closed -$240K – 817
2021
Q4 		$240K Buy
+13,700
New +$309K 0.08% 459
2021
Q3 		– Sell
-16,650
Closed -$563K – 696
2021
Q2 		$563K Buy
+16,650
New +$564K 0.23% 123

Other funds holding MGNI

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Campbell & Co Investment Adviser's MGNI Position: Q4 2025 in Review

Campbell & Co Investment Adviser sold out of Magnite (MGNI) in Q4 2025, closing a stake of 132,785 shares — an estimated $2.89M sold.

Campbell & Co Investment Adviser first reported a position in MGNI in Q2 2021 and held it in 4 quarters. The position peaked at $2.89M in Q3 2025. 304 funds tracked by Wall St. Rank hold MGNI as of Q4 2025.

  • Campbell & Co Investment Adviser reported no remaining Magnite position as of Q4 2025 after selling out during the quarter.
  • Campbell & Co Investment Adviser sold 132,785 Magnite shares in Q4 2025, an estimated $2.89M.
  • Campbell & Co Investment Adviser first reported a position in Magnite in Q2 2021 and held it in 4 quarters.
  • Campbell & Co Investment Adviser's Magnite position peaked at $2.89M in Q3 2025.
  • 304 funds tracked by Wall St. Rank held Magnite as of Q4 2025.

Based on Campbell & Co Investment Adviser's 13F filing for Q4 2025, filed 12 Feb 2026.