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Summit Securities Group’s Magnite MGNI Stock Holding History

Summit Securities Group’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
Q2 		– Sell
-1,364
Closed -$15.6K – 1284
2025
Q1 		$15.6K Buy
+1,364
New +$21.7K ﹤0.01% 498

Other funds holding MGNI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
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
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return
EC
Edenbrook Capital Mt. Kisco, New York $321M AUM 79.21% 1-Year Est. Return

Summit Securities Group's MGNI Position: Q2 2025 in Review

Summit Securities Group sold out of Magnite (MGNI) in Q2 2025, closing a stake of 1,364 shares — an estimated $15.6K sold.

Summit Securities Group first reported a position in MGNI in Q1 2025 and held it in 1 quarter. The position peaked at $15.6K in Q1 2025. 286 funds tracked by Wall St. Rank hold MGNI as of Q2 2025.

  • Summit Securities Group reported no remaining Magnite position as of Q2 2025 after selling out during the quarter.
  • Summit Securities Group sold 1,364 Magnite shares in Q2 2025, an estimated $15.6K.
  • Summit Securities Group first reported a position in Magnite in Q1 2025 and held it in 1 quarter.
  • Summit Securities Group's Magnite position peaked at $15.6K in Q1 2025.
  • 286 funds tracked by Wall St. Rank held Magnite as of Q2 2025.

Based on Summit Securities Group's 13F filing for Q2 2025, filed 12 Aug 2025.