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Granite Investment Partners’s Magnite MGNI Stock Holding History

Granite Investment Partners’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
-720,873
Closed -$8.23M – 271
2025
Q1 		$8.23M Sell
720,873
-187,938
-21% -$3M 0.42% 85
2024
Q4 		$14.5M Sell
908,811
-19,074
-2% -$280K 0.63% 60
2024
Q3 		$12.9M Buy
927,885
+83,127
+10% +$1.13M 0.55% 67
2024
Q2 		$11.2M Buy
+844,758
New +$9.23M 0.47% 77
2016
Q2 		– Sell
-293,567
Closed -$5.37M – 305
2016
Q1 		$5.37M Buy
293,567
+1,873
+0.6% +$28.7K 0.49% 83
2015
Q4 		$4.8M Buy
+291,694
New +$4.51M 0.43% 95

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

Granite Investment Partners's MGNI Position: Q2 2025 in Review

Granite Investment Partners sold out of Magnite (MGNI) in Q2 2025, closing a stake of 720,873 shares — an estimated $8.23M sold.

Granite Investment Partners first reported a position in MGNI in Q4 2015 and held it in 6 quarters. The position peaked at $14.5M in Q4 2024. 286 funds tracked by Wall St. Rank hold MGNI as of Q2 2025.

  • Granite Investment Partners reported no remaining Magnite position as of Q2 2025 after selling out during the quarter.
  • Granite Investment Partners sold 720,873 Magnite shares in Q2 2025, an estimated $8.23M.
  • Granite Investment Partners first reported a position in Magnite in Q4 2015 and held it in 6 quarters.
  • Granite Investment Partners's Magnite position peaked at $14.5M in Q4 2024.
  • 286 funds tracked by Wall St. Rank held Magnite as of Q2 2025.

Based on Granite Investment Partners's 13F filing for Q2 2025, filed 13 Aug 2025.