Two Sigma Investments
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Two Sigma Investments’s Magnite MGNI Stock Holding History

Two Sigma Investments’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 		$4.69M Buy
394,856
+31,444
+9% +$422K ﹤0.01% 2035
2025
Q4 		$5.9M Buy
363,412
+62,981
+21% +$1.05M 0.01% 1562
2025
Q3 		$6.54M Buy
300,431
+62,605
+26% +$1.48M 0.01% 1245
2025
Q2 		$5.74M Buy
237,826
+184,274
+344% +$2.71M 0.01% 1143
2025
Q1 		$611K Sell
53,552
-44,450
-45% -$709K ﹤0.01% 2434
2024
Q4 		$1.56M Buy
98,002
+241
+0.2% +$3.54K ﹤0.01% 1883
2024
Q3 		$1.35M Sell
97,761
-41,380
-30% -$564K ﹤0.01% 1932
2024
Q2 		$1.85M Buy
139,141
+85,880
+161% +$939K ﹤0.01% 1606
2024
Q1 		$573K Buy
53,261
+32,033
+151% +$320K ﹤0.01% 2268
2023
Q4 		$198K Sell
21,228
-57,272
-73% -$453K ﹤0.01% 2841
2023
Q3 		$592K Sell
78,500
-331,330
-81% -$3.57M ﹤0.01% 2207
2023
Q2 		$5.59M Buy
409,830
+217,568
+113% +$2.42M 0.01% 873
2023
Q1 		$1.78M Buy
192,262
+95,223
+98% +$1.01M 0.01% 1456
2022
Q4 		$1.03M Sell
97,039
-307,955
-76% -$2.81M ﹤0.01% 1685
2022
Q3 		$2.66M Buy
404,994
+69,323
+21% +$558K 0.01% 1017
2022
Q2 		$2.98M Sell
335,671
-144,954
-30% -$1.55M 0.01% 988
2022
Q1 		$6.35M Sell
480,625
-632,667
-57% -$8.53M 0.02% 822
2021
Q4 		$19.5M Buy
1,113,292
+259,696
+30% +$5.85M 0.04% 487
2021
Q3 		$23.9M Buy
853,596
+206,194
+32% +$6.21M 0.05% 405
2021
Q2 		$21.9M Buy
647,402
+491,459
+315% +$16.7M 0.05% 456
2021
Q1 		$6.49M Buy
+155,943
New +$6.76M 0.02% 911
2020
Q3 		– Sell
-27,239
Closed -$182K – 3380
2020
Q2 		$182K Sell
27,239
-89,741
-77% -$561K ﹤0.01% 2670
2020
Q1 		$649K Sell
116,980
-99,266
-46% -$912K 0.01% 1748
2019
Q4 		$1.76M Sell
216,246
-155,090
-42% -$1.27M 0.01% 1692
2019
Q3 		$3.23M Buy
371,336
+14,899
+4% +$131K 0.01% 1112
2019
Q2 		$2.27M Sell
356,437
-391,743
-52% -$2.41M 0.01% 1363
2019
Q1 		$4.55M Buy
748,180
+304,444
+69% +$1.57M 0.01% 1009
2018
Q4 		$1.66M Buy
443,736
+88,410
+25% +$338K 0.01% 1344
2018
Q3 		$1.28M Sell
355,326
-20,400
-5% -$72.1K ﹤0.01% 1805
2018
Q2 		$1.07M Sell
375,726
-67,536
-15% -$161K ﹤0.01% 2101
2018
Q1 		$798K Sell
443,262
-198,840
-31% -$377K ﹤0.01% 2159
2017
Q4 		$1.2M Buy
642,102
+188,833
+42% +$472K ﹤0.01% 1837
2017
Q3 		$1.76M Sell
453,269
-237,293
-34% -$1.01M 0.01% 1376
2017
Q2 		$3.55M Buy
690,562
+254,047
+58% +$1.4M 0.01% 1056
2017
Q1 		$2.57M Buy
436,515
+80,857
+23% +$630K 0.01% 1306
2016
Q4 		$2.64M Buy
355,658
+195,072
+121% +$1.52M 0.01% 1276
2016
Q3 		$1.33M Buy
+160,586
New +$1.71M ﹤0.01% 1758
2016
Q2 		– Sell
-140,559
Closed -$2.57M – 3090
2016
Q1 		$2.57M Buy
140,559
+105,278
+298% +$1.61M 0.01% 1034
2015
Q4 		$580K Buy
+35,281
New +$546K ﹤0.01% 1877
2015
Q3 		– Sell
-205,706
Closed -$3.08M – 2512
2015
Q2 		$3.08M Buy
+205,706
New +$3.54M 0.01% 965

Other funds holding MGNI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Two Sigma Investments's MGNI Position: Q1 2026 in Review

Two Sigma Investments increased its Magnite (MGNI) stake by 8.7% in Q1 2026, buying an estimated $422K and bringing the position to 394,856 shares worth $4.69M. The position accounts for ﹤0.01% of the portfolio, ranked #2035.

Two Sigma Investments first reported a position in MGNI in Q2 2015 and has held it in 40 quarters since. The position peaked at $23.9M in Q3 2021. 297 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

  • Two Sigma Investments held 394,856 shares of Magnite worth $4.69M as of Q1 2026.
  • Two Sigma Investments bought 31,444 Magnite shares in Q1 2026, an estimated $422K.
  • Magnite made up ﹤0.01% of Two Sigma Investments's portfolio in Q1 2026, its #2035 holding.
  • Two Sigma Investments first reported a position in Magnite in Q2 2015 and has held it in 40 quarters since.
  • Two Sigma Investments's Magnite position peaked at $23.9M in Q3 2021.
  • 297 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.