T. Rowe Price Investment Management
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T. Rowe Price Investment Management’s Magnite MGNI Stock Holding History

T. Rowe Price Investment Management’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
-890,918
Closed -$19.4M – 935
2025
Q3 		$19.4M Buy
+890,918
New +$21M 0.01% 499

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 $6.73T AUM 46.02% 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 $113B AUM 38.87% 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

T. Rowe Price Investment Management's MGNI Position: Q4 2025 in Review

T. Rowe Price Investment Management sold out of Magnite (MGNI) in Q4 2025, closing a stake of 890,918 shares — an estimated $19.4M sold.

T. Rowe Price Investment Management first reported a position in MGNI in Q3 2025 and held it in 1 quarter. The position peaked at $19.4M in Q3 2025. 304 funds tracked by Wall St. Rank hold MGNI as of Q4 2025.

  • T. Rowe Price Investment Management reported no remaining Magnite position as of Q4 2025 after selling out during the quarter.
  • T. Rowe Price Investment Management sold 890,918 Magnite shares in Q4 2025, an estimated $19.4M.
  • T. Rowe Price Investment Management first reported a position in Magnite in Q3 2025 and held it in 1 quarter.
  • T. Rowe Price Investment Management's Magnite position peaked at $19.4M in Q3 2025.
  • 304 funds tracked by Wall St. Rank held Magnite as of Q4 2025.

Based on T. Rowe Price Investment Management's 13F filing for Q4 2025, filed 17 Feb 2026.