Simplex Trading’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $1.94M | Buy |
8,983
+6,819
| +315% | +$1.3M | ﹤0.01% | 2069 |
|
|
2026
Q1 | $397K | Sell |
2,164
-28,714
| -93% | -$5.29M | ﹤0.01% | 3540 |
|
|
2025
Q4 | $5.43M | Buy |
30,878
+29,762
| +2,667% | +$4.86M | ﹤0.01% | 1209 |
|
|
2025
Q3 | $156K | Sell |
1,116
-5,483
| -83% | -$741K | ﹤0.01% | 5224 |
|
|
2025
Q2 | $828K | Buy |
6,599
+3,440
| +109% | +$429K | ﹤0.01% | 2973 |
|
|
2025
Q1 | $432K | Sell |
3,159
-30,383
| -91% | -$4.34M | ﹤0.01% | 3537 |
|
|
2024
Q4 | $5.13M | Sell |
33,542
-19,576
| -37% | -$3.3M | ﹤0.01% | 1462 |
|
|
2024
Q3 | $10.3M | Buy |
53,118
+32,405
| +156% | +$6.78M | 0.01% | 1017 |
|
|
2024
Q2 | $4.8M | Buy |
+20,713
| New | +$4.5M | ﹤0.01% | 1465 |
|
|
2023
Q4 | – | Sell |
-1,447
| Closed | -$355K | – | 8777 |
|
|
2023
Q3 | $371K | Buy |
+1,447
| New | +$387K | ﹤0.01% | 3709 |
|
|
2022
Q3 | – | Sell |
-3,774
| Closed | -$802K | – | 9899 |
|
|
2022
Q2 | $769K | Sell |
3,774
-5,576
| -60% | -$1.14M | ﹤0.01% | 2927 |
|
|
2022
Q1 | $1.97M | Buy |
+9,350
| New | +$2.03M | ﹤0.01% | 2132 |
|
|
2021
Q2 | – | Sell |
-43,137
| Closed | -$13.1M | – | 10035 |
|
|
2021
Q1 | $0 | Sell |
43,137
-2,766
| -6% | -$746K | ﹤0.01% | 8822 |
|
|
2020
Q4 | $11.2M | Buy |
+45,903
| New | +$11.8M | 0.01% | 534 |
|
|
2019
Q4 | – | Sell |
-68,075
| Closed | -$18.9M | – | 7287 |
|
|
2019
Q3 | $15.8M | Buy |
+68,075
| New | +$15.9M | 0.05% | 281 |
|
|
2018
Q3 | – | Sell |
-1,620
| Closed | -$558K | – | 7405 |
|
|
2018
Q2 | $470K | Buy |
+1,620
| New | +$455K | ﹤0.01% | 2515 |
|
|
2018
Q1 | – | Sell |
-13,807
| Closed | -$4.29M | – | 6135 |
|
|
2017
Q4 | $4.4M | Buy |
13,807
+5,928
| +75% | +$1.9M | 0.19% | 97 |
|
|
2017
Q3 | $2.47M | Buy |
+7,879
| New | +$2.33M | 0.1% | 152 |
|
|
2017
Q2 | – | Sell |
-22,270
| Closed | -$5.89M | – | 6087 |
|
|
2017
Q1 | $6.09M | Buy |
22,270
+4,340
| +24% | +$1.23M | 0.26% | 61 |
|
|
2016
Q4 | $5.08M | Sell |
17,930
-25,831
| -59% | -$7.66M | 0.3% | 53 |
|
|
2016
Q3 | $13.7M | Sell |
43,761
-12,706
| -23% | -$3.76M | 0.93% | 11 |
|
|
2016
Q2 | $13.7M | Buy |
+56,467
| New | +$14.9M | 0.91% | 11 |
|
|
2015
Q4 | – | Sell |
-16,253
| Closed | -$4.67M | – | 5394 |
|
|
2015
Q3 | $4.74M | Sell |
16,253
-12,703
| -44% | -$4.19M | 0.35% | 58 |
|
|
2015
Q2 | $11.7M | Buy |
28,956
+22,130
| +324% | +$8.88M | 0.98% | 10 |
|
|
2015
Q1 | $2.88M | Buy |
+6,826
| New | +$2.69M | 0.34% | 55 |
|
Other funds holding BIIB
Simplex Trading's BIIB Position: Q2 2026 in Review
Simplex Trading increased its Biogen (BIIB) stake by 315% in Q2 2026, buying an estimated $1.3M and bringing the position to 8,983 shares worth $1.94M. The position accounts for ﹤0.01% of the portfolio, ranked #2069.
Simplex Trading first reported a position in BIIB in Q1 2015 and has held it in 25 quarters since. The position peaked at $15.8M in Q3 2019. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.
- Simplex Trading held 8,983 shares of Biogen worth $1.94M as of Q2 2026.
- Simplex Trading bought 6,819 Biogen shares in Q2 2026, an estimated $1.3M.
- Biogen made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #2069 holding.
- Simplex Trading first reported a position in Biogen in Q1 2015 and has held it in 25 quarters since.
- Simplex Trading's Biogen position peaked at $15.8M in Q3 2019.
- 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.
Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.