Group One Trading’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | – | Sell |
-19,310
| Closed | -$3.15M | – | 8153 |
|
|
2025
Q3 | $2.7M | Sell |
19,310
-70,908
| -79% | -$9.58M | ﹤0.01% | 2005 |
|
|
2025
Q2 | $11.3M | Buy |
90,218
+77,841
| +629% | +$9.7M | 0.03% | 732 |
|
|
2025
Q1 | $1.69M | Sell |
12,377
-45,544
| -79% | -$6.51M | ﹤0.01% | 1969 |
|
|
2024
Q4 | $8.86M | Sell |
57,921
-101,314
| -64% | -$17.1M | 0.02% | 778 |
|
|
2024
Q3 | $30.9M | Buy |
159,235
+42,582
| +37% | +$8.91M | 0.09% | 171 |
|
|
2024
Q2 | $27M | Buy |
+116,653
| New | +$25.4M | 0.1% | 139 |
|
|
2024
Q1 | – | Sell |
-12,786
| Closed | -$2.99M | – | 7053 |
|
|
2023
Q4 | $3.31M | Buy |
12,786
+3,538
| +38% | +$869K | 0.01% | 1446 |
|
|
2023
Q3 | $2.38M | Sell |
9,248
-7,010
| -43% | -$1.87M | 0.01% | 1497 |
|
|
2023
Q2 | $4.63M | Buy |
16,258
+6,950
| +75% | +$2.07M | 0.01% | 1008 |
|
|
2023
Q1 | $2.59M | Buy |
+9,308
| New | +$2.58M | 0.01% | 1326 |
|
|
2022
Q4 | – | Sell |
-108,373
| Closed | -$30.6M | – | 7237 |
|
|
2022
Q3 | $28.9M | Buy |
108,373
+33,471
| +45% | +$7.11M | 0.06% | 259 |
|
|
2022
Q2 | $15.3M | Buy |
74,902
+20,776
| +38% | +$4.25M | 0.02% | 604 |
|
|
2022
Q1 | $11.4M | Buy |
54,126
+11,355
| +27% | +$2.47M | 0.01% | 906 |
|
|
2021
Q4 | $10.3M | Buy |
+42,771
| New | +$11M | 0.01% | 1089 |
|
|
2021
Q2 | – | Sell |
-26,125
| Closed | -$7.91M | – | 8141 |
|
|
2021
Q1 | $7.31M | Sell |
26,125
-8,220
| -24% | -$2.22M | 0.01% | 1198 |
|
|
2020
Q4 | $8.41M | Buy |
34,345
+24,050
| +234% | +$6.2M | 0.01% | 924 |
|
|
2020
Q3 | $2.92M | Sell |
10,295
-28,729
| -74% | -$8.01M | 0.01% | 1291 |
|
|
2020
Q2 | $10.4M | Buy |
+39,024
| New | +$11.7M | 0.05% | 419 |
|
|
2020
Q1 | – | Sell |
-10,226
| Closed | -$3.1M | – | 5260 |
|
|
2019
Q4 | $3.03M | Buy |
+10,226
| New | +$2.84M | 0.02% | 972 |
|
|
2018
Q1 | – | Sell |
-10,566
| Closed | -$3.28M | – | 4835 |
|
|
2017
Q4 | $3.37M | Buy |
+10,566
| New | +$3.39M | 0.02% | 866 |
|
|
2017
Q3 | – | Sell |
-3,969
| Closed | -$1.18M | – | 4818 |
|
|
2017
Q2 | $1.08M | Buy |
3,969
+1,688
| +74% | +$446K | 0.01% | 1400 |
|
|
2017
Q1 | $624K | Sell |
2,281
-13,345
| -85% | -$3.77M | 0.01% | 1692 |
|
|
2016
Q4 | $4.43M | Sell |
15,626
-5,430
| -26% | -$1.61M | 0.04% | 485 |
|
|
2016
Q3 | $6.59M | Buy |
21,056
+19,497
| +1,251% | +$5.77M | 0.07% | 303 |
|
|
2016
Q2 | $377K | Sell |
1,559
-600
| -28% | -$158K | ﹤0.01% | 1932 |
|
|
2016
Q1 | $562K | Buy |
+2,159
| New | +$570K | 0.01% | 1599 |
|
|
2015
Q4 | – | Sell |
-122
| Closed | -$35.1K | – | 4739 |
|
|
2015
Q3 | $36K | Buy |
+122
| New | +$40.3K | ﹤0.01% | 3729 |
|
Other funds holding BIIB
VCM
VPM
Group One Trading's BIIB Position: Q4 2025 in Review
Group One Trading sold out of Biogen (BIIB) in Q4 2025, closing a stake of 19,310 shares — an estimated $3.15M sold.
Group One Trading first reported a position in BIIB in Q3 2015 and held it in 27 quarters. The position peaked at $30.9M in Q3 2024. 998 funds tracked by Wall St. Rank hold BIIB as of Q4 2025.
- Group One Trading reported no remaining Biogen position as of Q4 2025 after selling out during the quarter.
- Group One Trading sold 19,310 Biogen shares in Q4 2025, an estimated $3.15M.
- Group One Trading first reported a position in Biogen in Q3 2015 and held it in 27 quarters.
- Group One Trading's Biogen position peaked at $30.9M in Q3 2024.
- 998 funds tracked by Wall St. Rank held Biogen as of Q4 2025.
Based on Group One Trading's 13F filing for Q4 2025, filed 12 Feb 2026.