D.E. Shaw & Co’s Magnite MGNI Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2025
Q4
Sell
-211,433
Closed -$4.61M 4853
2025
Q3
$4.61M Buy
211,433
+179,486
+562% +$4.24M ﹤0.01% 2299
2025
Q2
$771K Buy
+31,947
New +$471K ﹤0.01% 3410
2025
Q1
Sell
-45,187
Closed -$719K 4544
2024
Q4
$719K Buy
45,187
+24,917
+123% +$366K ﹤0.01% 3404
2024
Q3
$281K Sell
20,270
-20,827
-51% -$284K ﹤0.01% 4008
2024
Q2
$546K Buy
41,097
+13,731
+50% +$150K ﹤0.01% 3574
2024
Q1
$294K Buy
+27,366
New +$273K ﹤0.01% 3739
2023
Q1
Sell
-97,767
Closed -$1.04M 4697
2022
Q4
$1.04M Buy
97,767
+81,153
+488% +$741K ﹤0.01% 3423
2022
Q3
$109K Sell
16,614
-20,014
-55% -$161K ﹤0.01% 4585
2022
Q2
$325K Sell
36,628
-104,631
-74% -$1.12M ﹤0.01% 4316
2022
Q1
$1.87M Buy
+141,259
New +$1.9M ﹤0.01% 3371
2021
Q2
Sell
-99,883
Closed -$3.38M 4908
2021
Q1
$4.16M Buy
99,883
+76,738
+332% +$3.32M ﹤0.01% 1993
2020
Q4
$711K Buy
+23,145
New +$350K ﹤0.01% 3225
2020
Q3
Sell
-11,536
Closed -$77K 4022
2020
Q2
$77K Sell
11,536
-177,277
-94% -$1.11M ﹤0.01% 3900
2020
Q1
$1.05M Sell
188,813
-338,804
-64% -$3.11M ﹤0.01% 2695
2019
Q4
$4.3M Sell
527,617
-85,316
-14% -$701K ﹤0.01% 1844
2019
Q3
$5.34M Sell
612,933
-66,016
-10% -$579K 0.01% 1600
2019
Q2
$4.32M Sell
678,949
-821,565
-55% -$5.05M 0.01% 1689
2019
Q1
$9.12M Buy
1,500,514
+259,125
+21% +$1.33M 0.01% 1161
2018
Q4
$4.63M Buy
1,241,389
+173,881
+16% +$664K 0.01% 1569
2018
Q3
$3.84M Sell
1,067,508
-160,606
-13% -$568K ﹤0.01% 1745
2018
Q2
$3.5M Sell
1,228,114
-216,025
-15% -$514K ﹤0.01% 1787
2018
Q1
$2.6M Buy
1,444,139
+38,785
+3% +$73.5K ﹤0.01% 1865
2017
Q4
$2.63M Buy
1,405,354
+247,035
+21% +$618K ﹤0.01% 1930
2017
Q3
$4.5M Buy
1,158,319
+348,511
+43% +$1.48M 0.01% 1454
2017
Q2
$4.16M Buy
809,808
+112,333
+16% +$617K 0.01% 1483
2017
Q1
$4.11M Buy
697,475
+484,904
+228% +$3.78M 0.01% 1415
2016
Q4
$1.58M Buy
+212,571
New +$1.66M ﹤0.01% 2167
2015
Q2
Sell
-46,891
Closed -$840K 3815
2015
Q1
$840K Sell
46,891
-261
-0.6% -$4.4K ﹤0.01% 2701
2014
Q4
$761K Buy
+47,152
New +$608K ﹤0.01% 3029
2014
Q3
Sell
-33,324
Closed -$428K 4275
2014
Q2
$428K Buy
+33,324
New +$500K ﹤0.01% 3642

Other funds holding MGNI

D.E. Shaw & Co's MGNI Position: Q4 2025 in Review

D.E. Shaw & Co sold out of Magnite (MGNI) in Q4 2025, closing a stake of 211,433 shares — an estimated $4.61M sold.

D.E. Shaw & Co first reported a position in MGNI in Q2 2014 and held it in 30 quarters. The position peaked at $9.12M in Q1 2019. 304 funds tracked by Wall St. Rank hold MGNI as of Q4 2025.

  • D.E. Shaw & Co reported no remaining Magnite position as of Q4 2025 after selling out during the quarter.
  • D.E. Shaw & Co sold 211,433 Magnite shares in Q4 2025, an estimated $4.61M.
  • D.E. Shaw & Co first reported a position in Magnite in Q2 2014 and held it in 30 quarters.
  • D.E. Shaw & Co's Magnite position peaked at $9.12M in Q1 2019.
  • 304 funds tracked by Wall St. Rank held Magnite as of Q4 2025.

Based on D.E. Shaw & Co's 13F filing for Q4 2025, filed 17 Feb 2026.