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Shell Asset Management’s Magnite MGNI Stock Holding History

Shell 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
2025
Q3 		$100K Sell
4,609
-5,578
-55% -$132K 0.01% 646
2025
Q2 		$246K Sell
10,187
-2,749
-21% -$40.5K 0.01% 698
2025
Q1 		$148K Buy
12,936
+10,937
+547% +$174K 0.01% 893
2024
Q4 		$32K Hold
1,999
– – ﹤0.01% 1219
2024
Q3 		$28K Buy
+1,999
New +$27.2K ﹤0.01% 1220
2024
Q1 		$28K Sell
2,132
-124
-5% -$1.24K ﹤0.01% 1209
2023
Q4 		$21K Sell
2,256
-598
-21% -$4.72K ﹤0.01% 1231
2023
Q3 		$22K Sell
2,854
-6
-0.2% -$65 ﹤0.01% 1240
2023
Q2 		$39K Sell
2,860
-18
-0.6% -$200 ﹤0.01% 1233
2023
Q1 		$27K Sell
2,878
-9
-0.3% -$96 ﹤0.01% 1224
2022
Q4 		$31K Sell
2,887
-558
-16% -$5.09K ﹤0.01% 1301
2022
Q3 		$23K Sell
3,445
-350
-9% -$2.82K ﹤0.01% 1372
2022
Q2 		$34K Buy
3,795
+63
+2% +$675 ﹤0.01% 1376
2022
Q1 		$49K Sell
3,732
-563
-13% -$7.59K ﹤0.01% 1342
2021
Q4 		$75K Sell
4,295
-71
-2% -$1.6K ﹤0.01% 1346
2021
Q3 		$122K Sell
4,366
-170
-4% -$5.12K ﹤0.01% 1284
2021
Q2 		$153K Sell
4,536
-2,674
-37% -$90.6K ﹤0.01% 1295
2021
Q1 		$300K Buy
+7,210
New +$312K 0.01% 1029
2020
Q3 		– Sell
-64,219
Closed -$428K – 1421
2020
Q2 		$428K Sell
64,219
-746
-1% -$4.66K 0.01% 733
2020
Q1 		$361K Sell
64,965
-988
-1% -$9.08K 0.01% 800
2019
Q4 		$538K Sell
65,953
-57,562
-47% -$473K 0.01% 856
2019
Q3 		$1.08M Sell
123,515
-1,058
-0.8% -$9.27K 0.02% 508
2019
Q2 		$792K Sell
124,573
-2,846
-2% -$17.5K 0.02% 666
2019
Q1 		$775K Buy
+127,419
New +$656K 0.02% 699

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
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 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 $95.5B AUM 28.4% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Shell Asset Management's MGNI Position: Q3 2025 in Review

Shell Asset Management reduced its Magnite (MGNI) stake by 55% in Q3 2025, selling an estimated $132K and leaving 4,609 shares worth $100K. The position accounts for 0.01% of the portfolio, ranked #646.

Shell Asset Management first reported a position in MGNI in Q1 2019 and has held it in 24 quarters since. The position peaked at $1.08M in Q3 2019. 316 funds tracked by Wall St. Rank hold MGNI as of Q3 2025.

  • Shell Asset Management held 4,609 shares of Magnite worth $100K as of Q3 2025.
  • Shell Asset Management sold 5,578 Magnite shares in Q3 2025, an estimated $132K.
  • Magnite made up 0.01% of Shell Asset Management's portfolio in Q3 2025, its #646 holding.
  • Shell Asset Management first reported a position in Magnite in Q1 2019 and has held it in 24 quarters since.
  • Shell Asset Management's Magnite position peaked at $1.08M in Q3 2019.
  • 316 funds tracked by Wall St. Rank held Magnite as of Q3 2025.

Based on Shell Asset Management's 13F filing for Q3 2025, filed 7 Nov 2025.