Jane Street’s Biogen BIIB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Shares
Change %
Capital Flow Portfolio Weight Portfolio Position
2025
Q2
$4.15M Sell
33,041
-4,213
-11% -$529K ﹤0.01% 1480
2025
Q1
$5.1M Sell
37,254
-165,384
-82% -$22.6M ﹤0.01% 1365
2024
Q4
$31M Buy
202,638
+92,349
+84% +$14.1M 0.01% 309
2024
Q3
$21.4M Sell
110,289
-67,877
-38% -$13.2M ﹤0.01% 406
2024
Q2
$41.3M Buy
178,166
+92,172
+107% +$21.4M 0.01% 356
2024
Q1
$18.5M Sell
85,994
-118,694
-58% -$25.6M ﹤0.01% 528
2023
Q4
$53M Buy
204,688
+157,834
+337% +$40.8M 0.01% 234
2023
Q3
$12M Sell
46,854
-88,059
-65% -$22.6M ﹤0.01% 719
2023
Q2
$38.4M Buy
134,913
+85,003
+170% +$24.2M 0.01% 312
2023
Q1
$13.9M Sell
49,910
-157,671
-76% -$43.8M 0.01% 551
2022
Q4
$57.5M Sell
207,581
-96,959
-32% -$26.8M 0.03% 145
2022
Q3
$81.3M Buy
304,540
+114,830
+61% +$30.7M 0.04% 104
2022
Q2
$38.7M Buy
189,710
+6,227
+3% +$1.27M 0.02% 196
2022
Q1
$38.6M Buy
183,483
+22,992
+14% +$4.84M 0.01% 238
2021
Q4
$38.5M Buy
160,491
+66,321
+70% +$15.9M 0.01% 208
2021
Q3
$26.6M Buy
94,170
+11,484
+14% +$3.25M 0.01% 257
2021
Q2
$28.6M Sell
82,686
-40,009
-33% -$13.9M 0.01% 224
2021
Q1
$34.3M Sell
122,695
-122,116
-50% -$34.2M 0.02% 168
2020
Q4
$59.9M Buy
244,811
+129,054
+111% +$31.6M 0.03% 103
2020
Q3
$32.8M Sell
115,757
-43,590
-27% -$12.4M 0.02% 125
2020
Q2
$42.6M Buy
159,347
+127,915
+407% +$34.2M 0.03% 103
2020
Q1
$9.94M Sell
31,432
-17,389
-36% -$5.5M 0.01% 309
2019
Q4
$14.5M Sell
48,821
-20,660
-30% -$6.13M 0.02% 159
2019
Q3
$16.2M Buy
69,481
+2,602
+4% +$606K 0.03% 138
2019
Q2
$15.6M Sell
66,879
-48,473
-42% -$11.3M 0.03% 173
2019
Q1
$27.3M Buy
115,352
+101,280
+720% +$23.9M 0.04% 126
2018
Q4
$4.23M Sell
14,072
-33,485
-70% -$10.1M 0.01% 438
2018
Q3
$16.8M Buy
47,557
+19,380
+69% +$6.85M 0.03% 148
2018
Q2
$8.18M Buy
28,177
+18,177
+182% +$5.28M 0.02% 321
2018
Q1
$2.74M Sell
10,000
-13,877
-58% -$3.8M 0.01% 781
2017
Q4
$7.61M Sell
23,877
-445
-2% -$142K 0.02% 267
2017
Q3
$7.62M Sell
24,322
-14,359
-37% -$4.5M 0.02% 265
2017
Q2
$10.5M Buy
38,681
+904
+2% +$245K 0.04% 186
2017
Q1
$10.3M Buy
37,777
+26,990
+250% +$7.38M 0.05% 148
2016
Q4
$3.06M Sell
10,787
-23,735
-69% -$6.73M 0.01% 471
2016
Q3
$10.8M Sell
34,522
-16,213
-32% -$5.07M 0.05% 119
2016
Q2
$12.3M Buy
50,735
+27,089
+115% +$6.55M 0.06% 103
2016
Q1
$6.16M Buy
23,646
+4,370
+23% +$1.14M 0.03% 203
2015
Q4
$5.91M Sell
19,276
-17,583
-48% -$5.39M 0.04% 193
2015
Q3
$10.8M Buy
36,859
+25,861
+235% +$7.55M 0.07% 106
2015
Q2
$4.44M Buy
10,998
+2,569
+30% +$1.04M 0.03% 307
2015
Q1
$3.56M Buy
8,429
+2,930
+53% +$1.24M 0.03% 332
2014
Q4
$1.87M Buy
5,499
+4,628
+531% +$1.57M 0.01% 433
2014
Q3
$288K Sell
871
-699
-45% -$231K ﹤0.01% 1605
2014
Q2
$495K Buy
+1,570
New +$495K 0.01% 1185
2013
Q4
Sell
-5,080
Closed -$1.22M 2082
2013
Q3
$1.22M Sell
5,080
-45,208
-90% -$10.9M 0.01% 765
2013
Q2
$10.8M Buy
+50,288
New +$10.8M 0.19% 39