Jane Street’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $1.92M | Sell |
10,469
-13,070
| -56% | -$2.41M | ﹤0.01% | 5178 |
|
|
2025
Q4 | $4.14M | Buy |
23,539
+18,199
| +341% | +$2.97M | ﹤0.01% | 3523 |
|
|
2025
Q3 | $748K | Sell |
5,340
-27,701
| -84% | -$3.74M | ﹤0.01% | 6944 |
|
|
2025
Q2 | $4.15M | Sell |
33,041
-4,213
| -11% | -$525K | ﹤0.01% | 3265 |
|
|
2025
Q1 | $5.1M | Sell |
37,254
-165,384
| -82% | -$23.6M | ﹤0.01% | 2913 |
|
|
2024
Q4 | $31M | Buy |
202,638
+92,349
| +84% | +$15.6M | 0.01% | 952 |
|
|
2024
Q3 | $21.4M | Sell |
110,289
-67,877
| -38% | -$14.2M | ﹤0.01% | 1193 |
|
|
2024
Q2 | $41.3M | Buy |
178,166
+92,172
| +107% | +$20M | 0.01% | 798 |
|
|
2024
Q1 | $18.5M | Sell |
85,994
-118,694
| -58% | -$27.8M | ﹤0.01% | 1244 |
|
|
2023
Q4 | $53M | Buy |
204,688
+157,834
| +337% | +$38.8M | 0.01% | 645 |
|
|
2023
Q3 | $12M | Sell |
46,854
-88,059
| -65% | -$23.6M | ﹤0.01% | 1579 |
|
|
2023
Q2 | $38.4M | Buy |
134,913
+85,003
| +170% | +$25.3M | 0.01% | 731 |
|
|
2023
Q1 | $13.9M | Sell |
49,910
-157,671
| -76% | -$43.6M | 0.01% | 1308 |
|
|
2022
Q4 | $57.5M | Sell |
207,581
-96,959
| -32% | -$27.4M | 0.03% | 460 |
|
|
2022
Q3 | $81.3M | Buy |
304,540
+114,830
| +61% | +$24.4M | 0.04% | 341 |
|
|
2022
Q2 | $38.7M | Buy |
189,710
+6,227
| +3% | +$1.27M | 0.02% | 673 |
|
|
2022
Q1 | $38.6M | Buy |
183,483
+22,992
| +14% | +$5M | 0.01% | 816 |
|
|
2021
Q4 | $38.5M | Buy |
160,491
+66,321
| +70% | +$17.1M | 0.01% | 783 |
|
|
2021
Q3 | $26.6M | Buy |
94,170
+11,484
| +14% | +$3.76M | 0.01% | 942 |
|
|
2021
Q2 | $28.6M | Sell |
82,686
-40,009
| -33% | -$12.1M | 0.01% | 836 |
|
|
2021
Q1 | $34.3M | Sell |
122,695
-122,116
| -50% | -$32.9M | 0.02% | 627 |
|
|
2020
Q4 | $59.9M | Buy |
244,811
+129,054
| +111% | +$33.3M | 0.03% | 400 |
|
|
2020
Q3 | $32.8M | Sell |
115,757
-43,590
| -27% | -$12.2M | 0.02% | 540 |
|
|
2020
Q2 | $42.6M | Buy |
159,347
+127,915
| +407% | +$38.5M | 0.03% | 407 |
|
|
2020
Q1 | $9.94M | Sell |
31,432
-17,389
| -36% | -$5.28M | 0.01% | 779 |
|
|
2019
Q4 | $14.5M | Sell |
48,821
-20,660
| -30% | -$5.73M | 0.02% | 494 |
|
|
2019
Q3 | $16.2M | Buy |
69,481
+2,602
| +4% | +$606K | 0.03% | 415 |
|
|
2019
Q2 | $15.6M | Sell |
66,879
-48,473
| -42% | -$11.2M | 0.03% | 455 |
|
|
2019
Q1 | $27.3M | Buy |
115,352
+101,280
| +720% | +$31.9M | 0.04% | 323 |
|
|
2018
Q4 | $4.23M | Sell |
14,072
-33,485
| -70% | -$10.7M | 0.01% | 1048 |
|
|
2018
Q3 | $16.8M | Buy |
47,557
+19,380
| +69% | +$6.67M | 0.03% | 383 |
|
|
2018
Q2 | $8.18M | Buy |
28,177
+18,177
| +182% | +$5.11M | 0.02% | 725 |
|
|
2018
Q1 | $2.74M | Sell |
10,000
-13,877
| -58% | -$4.31M | 0.01% | 1503 |
|
|
2017
Q4 | $7.61M | Sell |
23,877
-445
| -2% | -$143K | 0.02% | 633 |
|
|
2017
Q3 | $7.62M | Sell |
24,322
-14,359
| -37% | -$4.25M | 0.02% | 629 |
|
|
2017
Q2 | $10.5M | Buy |
38,681
+904
| +2% | +$239K | 0.04% | 443 |
|
|
2017
Q1 | $10.3M | Buy |
37,777
+26,990
| +250% | +$7.63M | 0.05% | 371 |
|
|
2016
Q4 | $3.06M | Sell |
10,787
-23,735
| -69% | -$7.04M | 0.01% | 986 |
|
|
2016
Q3 | $10.8M | Sell |
34,522
-16,213
| -32% | -$4.8M | 0.05% | 290 |
|
|
2016
Q2 | $12.3M | Buy |
50,735
+27,089
| +115% | +$7.14M | 0.06% | 279 |
|
|
2016
Q1 | $6.16M | Buy |
23,646
+4,370
| +23% | +$1.15M | 0.03% | 469 |
|
|
2015
Q4 | $5.91M | Sell |
19,276
-17,583
| -48% | -$5.05M | 0.04% | 424 |
|
|
2015
Q3 | $10.8M | Buy |
36,859
+25,861
| +235% | +$8.54M | 0.07% | 241 |
|
|
2015
Q2 | $4.44M | Buy |
10,998
+2,569
| +30% | +$1.03M | 0.03% | 530 |
|
|
2015
Q1 | $3.56M | Buy |
8,429
+2,930
| +53% | +$1.15M | 0.03% | 551 |
|
|
2014
Q4 | $1.87M | Buy |
5,499
+4,628
| +531% | +$1.5M | 0.01% | 706 |
|
|
2014
Q3 | $288K | Sell |
871
-699
| -45% | -$230K | ﹤0.01% | 1919 |
|
|
2014
Q2 | $495K | Buy |
+1,570
| New | +$473K | 0.01% | 1415 |
|
|
2013
Q4 | – | Sell |
-5,080
| Closed | -$1.22M | – | 2350 |
|
|
2013
Q3 | $1.22M | Sell |
5,080
-45,208
| -90% | -$10.1M | 0.01% | 933 |
|
|
2013
Q2 | $10.8M | Buy |
+50,288
| New | +$10.7M | 0.19% | 74 |
|
Other funds holding BIIB
VCM
VPM
Jane Street's BIIB Position: Q1 2026 in Review
Jane Street reduced its Biogen (BIIB) stake by 56% in Q1 2026, selling an estimated $2.41M and leaving 10,469 shares worth $1.92M. The position accounts for ﹤0.01% of the portfolio, ranked #5178.
Jane Street first reported a position in BIIB in Q2 2013 and has held it in 50 quarters since. The position peaked at $81.3M in Q3 2022. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Jane Street held 10,469 shares of Biogen worth $1.92M as of Q1 2026.
- Jane Street sold 13,070 Biogen shares in Q1 2026, an estimated $2.41M.
- Biogen made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5178 holding.
- Jane Street first reported a position in Biogen in Q2 2013 and has held it in 50 quarters since.
- Jane Street's Biogen position peaked at $81.3M in Q3 2022.
- 1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.