Brown Advisory’s Magnite MGNI Stock Holding History

Brown Advisory's MGNI Position: Q1 2026 in Review

Brown Advisory increased its Magnite (MGNI) stake by 48% in Q1 2026, buying an estimated $138K and bringing the position to 31,524 shares worth $375K. The position accounts for ﹤0.01% of the portfolio, ranked #1147.

Brown Advisory first reported a position in MGNI in Q2 2023 and has held it in 5 quarters since. The position peaked at $1.41M in Q3 2025. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

• Brown Advisory held 31,524 shares of Magnite worth $375K as of Q1 2026.
• Brown Advisory bought 10,261 Magnite shares in Q1 2026, an estimated $138K.
• Magnite made up ﹤0.01% of Brown Advisory's portfolio in Q1 2026, its #1147 holding.
• Brown Advisory first reported a position in Magnite in Q2 2023 and has held it in 5 quarters since.
• Brown Advisory's Magnite position peaked at $1.41M in Q3 2025.
• 297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Brown Advisory's 13F filing for Q1 2026, filed 15 May 2026.