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
Q1 | $13.2M | Buy |
71,900
+13,400
| +23% | +$2.47M | 0.01% | 580 |
|
|
2025
Q4 | $10.3M | Sell |
58,500
-14,500
| -20% | -$2.37M | 0.01% | 830 |
|
|
2025
Q3 | $10.2M | Sell |
73,000
-7,100
| -9% | -$960K | 0.01% | 956 |
|
|
2025
Q2 | $10.1M | Sell |
80,100
-7,400
| -8% | -$922K | 0.01% | 888 |
|
|
2025
Q1 | $12M | Buy |
87,500
+17,800
| +26% | +$2.54M | 0.01% | 775 |
|
|
2024
Q4 | $10.7M | Buy |
69,700
+16,500
| +31% | +$2.78M | 0.01% | 992 |
|
|
2024
Q3 | $10.3M | Sell |
53,200
-4,300
| -7% | -$900K | 0.01% | 1016 |
|
|
2024
Q2 | $13.3M | Sell |
57,500
-26,900
| -32% | -$5.85M | 0.01% | 828 |
|
|
2024
Q1 | $18.2M | Sell |
84,400
-25,600
| -23% | -$6M | 0.01% | 759 |
|
|
2023
Q4 | $28.5M | Buy |
110,000
+4,500
| +4% | +$1.11M | 0.02% | 557 |
|
|
2023
Q3 | $27.1M | Buy |
105,500
+26,900
| +34% | +$7.19M | 0.02% | 464 |
|
|
2023
Q2 | $22.4M | Sell |
78,600
-21,700
| -22% | -$6.46M | 0.02% | 533 |
|
|
2023
Q1 | $27.9M | Sell |
100,300
-158,200
| -61% | -$43.8M | 0.02% | 453 |
|
|
2022
Q4 | $71.6M | Sell |
258,500
-135,900
| -34% | -$38.4M | 0.08% | 206 |
|
|
2022
Q3 | $105M | Buy |
394,400
+157,400
| +66% | +$33.4M | 0.12% | 104 |
|
|
2022
Q2 | $48.3M | Buy |
237,000
+20,100
| +9% | +$4.11M | 0.05% | 255 |
|
|
2022
Q1 | $45.7M | Buy |
216,900
+500
| +0.2% | +$109K | 0.04% | 307 |
|
|
2021
Q4 | $51.9M | Buy |
216,400
+63,800
| +42% | +$16.4M | 0.05% | 267 |
|
|
2021
Q3 | $53.2M | Buy |
152,600
+5,100
| +3% | +$1.67M | 0.05% | 235 |
|
|
2021
Q2 | $51.1M | Buy |
+147,500
| New | +$44.7M | 0.05% | 238 |
|
|
2021
Q1 | – | Sell |
-3,468
| Closed | -$84.9M | – | 8821 |
|
|
2020
Q4 | $84.9M | Buy |
3,468
+1,646
| +90% | +$425K | 0.11% | 105 |
|
|
2020
Q3 | $51.7M | Buy |
1,822
+151
| +9% | +$42.1K | 0.07% | 158 |
|
|
2020
Q2 | $44.7M | Buy |
1,671
+64
| +4% | +$19.2K | 0.07% | 153 |
|
|
2020
Q1 | $50.8M | Sell |
1,607
-458
| -22% | -$139K | 0.09% | 115 |
|
|
2019
Q4 | $61.3M | Buy |
2,065
+640
| +45% | +$178K | 0.13% | 85 |
|
|
2019
Q3 | $33.2M | Buy |
1,425
+195
| +16% | +$45.4K | 0.09% | 145 |
|
|
2019
Q2 | $28.8M | Sell |
1,230
-293
| -19% | -$67.7K | 0.08% | 157 |
|
|
2019
Q1 | $36M | Buy |
1,523
+641
| +73% | +$202K | 0.1% | 133 |
|
|
2018
Q4 | $26.5M | Sell |
882
-16
| -2% | -$5.11K | 0.08% | 160 |
|
|
2018
Q3 | $31.7M | Buy |
898
+260
| +41% | +$89.5K | 0.1% | 137 |
|
|
2018
Q2 | $18.5M | Sell |
638
-63
| -9% | -$17.7K | 0.07% | 197 |
|
|
2018
Q1 | $611K | Sell |
701
-207
| -23% | -$64.3K | 0.03% | 620 |
|
|
2017
Q4 | $1.68M | Sell |
908
-407
| -31% | -$131K | 0.07% | 227 |
|
|
2017
Q3 | $1.91M | Sell |
1,315
-228
| -15% | -$67.5K | 0.08% | 203 |
|
|
2017
Q2 | $1.47M | Buy |
1,543
+713
| +86% | +$189K | 0.06% | 245 |
|
|
2017
Q1 | $866K | Buy |
830
+20
| +2% | +$5.66K | 0.04% | 433 |
|
|
2016
Q4 | $1.05M | Buy |
810
+11
| +1% | +$3.26K | 0.06% | 272 |
|
|
2016
Q3 | $1.38M | Buy |
799
+175
| +28% | +$51.8K | 0.09% | 200 |
|
|
2016
Q2 | $442K | Sell |
624
-360
| -37% | -$94.9K | 0.03% | 577 |
|
|
2016
Q1 | $569K | Sell |
984
-1,473
| -60% | -$389K | 0.05% | 396 |
|
|
2015
Q4 | $2.6M | Buy |
2,457
+322
| +15% | +$92.5K | 0.2% | 85 |
|
|
2015
Q3 | $1.07M | Buy |
2,135
+1,373
| +180% | +$453K | 0.08% | 221 |
|
|
2015
Q2 | $3.15M | Buy |
762
+120
| +19% | +$48.2K | 0.26% | 57 |
|
|
2015
Q1 | $3.07M | Sell |
642
-287
| -31% | -$113K | 0.36% | 49 |
|
|
2014
Q4 | $2.57M | Buy |
+929
| New | +$301K | 0.31% | 54 |
|
Other funds holding BIIB
VCM
VPM
Simplex Trading's BIIB Position: Q1 2026 in Review
Simplex Trading reduced its Biogen (BIIB) stake by 93% in Q1 2026, selling an estimated $5.29M and leaving 2,164 shares worth $397K. The position accounts for ﹤0.01% of the portfolio, ranked #3540.
Simplex Trading first reported a position in BIIB in Q1 2015 and has held it in 24 quarters since. The position peaked at $15.8M in Q3 2019. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Simplex Trading held 2,164 shares of Biogen worth $397K as of Q1 2026.
- Simplex Trading sold 28,714 Biogen shares in Q1 2026, an estimated $5.29M.
- Biogen made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #3540 holding.
- Simplex Trading first reported a position in Biogen in Q1 2015 and has held it in 24 quarters since.
- Simplex Trading's Biogen position peaked at $15.8M in Q3 2019.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.