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Griffin Asset Management’s Magnite MGNI Stock Holding History

Griffin Asset 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
2026
Q1 		– Sell
-19,935
Closed -$324K – 245
2025
Q4 		$324K Hold
19,935
– – 0.04% 195
2025
Q3 		$434K Hold
19,935
– – 0.05% 160
2025
Q2 		$481K Sell
19,935
-10,820
-35% -$159K 0.06% 156
2025
Q1 		$351K Hold
30,755
– – 0.04% 165
2024
Q4 		$490K Sell
30,755
-1,330
-4% -$19.5K 0.06% 161
2024
Q3 		$444K Sell
32,085
-32,530
-50% -$443K 0.05% 164
2024
Q2 		$859K Sell
64,615
-9,095
-12% -$99.4K 0.1% 139
2024
Q1 		$792K Sell
73,710
-8,655
-11% -$86.5K 0.09% 142
2023
Q4 		$769K Hold
82,365
– – 0.1% 147
2023
Q3 		$621K Sell
82,365
-2,100
-2% -$22.6K 0.09% 150
2023
Q2 		$1.15M Hold
84,465
– – 0.16% 127
2023
Q1 		$782K Sell
84,465
-38,144
-31% -$406K 0.11% 142
2022
Q4 		$1.3M Sell
122,609
-11,625
-9% -$106K 0.2% 117
2022
Q3 		$882K Sell
134,234
-16,878
-11% -$136K 0.15% 131
2022
Q2 		$1.34M Buy
151,112
+650
+0.4% +$6.97K 0.21% 110
2022
Q1 		$1.99M Buy
150,462
+135
+0.1% +$1.82K 0.26% 97
2021
Q4 		$2.63M Sell
150,327
-4,432
-3% -$99.9K 0.33% 82
2021
Q3 		$4.33M Buy
154,759
+1,885
+1% +$56.7K 0.55% 52
2021
Q2 		$5.17M Buy
152,874
+2,017
+1% +$68.3K 0.62% 44
2021
Q1 		$6.28M Buy
150,857
+25,342
+20% +$1.1M 0.8% 37
2020
Q4 		$3.85M Buy
125,515
+46,482
+59% +$703K 0.51% 51
2020
Q3 		$549K Buy
79,033
+4,958
+7% +$33.1K 0.08% 145
2020
Q2 		$494K Buy
+74,075
New +$463K 0.08% 151

Other funds holding MGNI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Griffin Asset Management's MGNI Position: Q1 2026 in Review

Griffin Asset Management sold out of Magnite (MGNI) in Q1 2026, closing a stake of 19,935 shares — an estimated $324K sold.

Griffin Asset Management first reported a position in MGNI in Q2 2020 and held it in 23 quarters. The position peaked at $6.28M in Q1 2021. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Griffin Asset Management reported no remaining Magnite position as of Q1 2026 after selling out during the quarter.
  • Griffin Asset Management sold 19,935 Magnite shares in Q1 2026, an estimated $324K.
  • Griffin Asset Management first reported a position in Magnite in Q2 2020 and held it in 23 quarters.
  • Griffin Asset Management's Magnite position peaked at $6.28M in Q1 2021.
  • 297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Griffin Asset Management's 13F filing for Q1 2026, filed 30 Apr 2026.