Cornerstone Advisors’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q3 | – | Sell |
-3,100
| Closed | -$389K | – | 242 |
|
|
2025
Q2 | $389K | Sell |
3,100
-500
| -14% | -$62.3K | 0.01% | 253 |
|
|
2025
Q1 | $493K | Hold |
3,600
| – | – | 0.02% | 246 |
|
|
2024
Q4 | $551K | Hold |
3,600
| – | – | 0.02% | 240 |
|
|
2024
Q3 | $698K | Hold |
3,600
| – | – | 0.03% | 245 |
|
|
2024
Q2 | $835K | Sell |
3,600
-2,900
| -45% | -$630K | 0.03% | 255 |
|
|
2024
Q1 | $1.4M | Hold |
6,500
| – | – | 0.06% | 240 |
|
|
2023
Q4 | $1.68M | Sell |
6,500
-4,500
| -41% | -$1.11M | 0.07% | 226 |
|
|
2023
Q3 | $2.83M | Sell |
11,000
-7,000
| -39% | -$1.87M | 0.13% | 166 |
|
|
2023
Q2 | $5.13M | Hold |
18,000
| – | – | 0.24% | 109 |
|
|
2023
Q1 | $5M | Hold |
18,000
| – | – | 0.23% | 97 |
|
|
2022
Q4 | $4.98M | Buy |
18,000
+2,000
| +13% | +$565K | 0.25% | 102 |
|
|
2022
Q3 | $4.27M | Hold |
16,000
| – | – | 0.21% | 110 |
|
|
2022
Q2 | $3.26M | Hold |
16,000
| – | – | 0.17% | 129 |
|
|
2022
Q1 | $3.37M | Hold |
16,000
| – | – | 0.2% | 116 |
|
|
2021
Q4 | $3.84M | Hold |
16,000
| – | – | 0.21% | 114 |
|
|
2021
Q3 | $4.53M | Hold |
16,000
| – | – | 0.26% | 99 |
|
|
2021
Q2 | $5.54M | Buy |
16,000
+7,000
| +78% | +$2.12M | 0.33% | 85 |
|
|
2021
Q1 | $2.52M | Buy |
+9,000
| New | +$2.43M | 0.22% | 109 |
|
|
2020
Q4 | – | Sell |
-11,965
| Closed | -$3.39M | – | 171 |
|
|
2020
Q3 | $3.39M | Buy |
11,965
+3,965
| +50% | +$1.11M | 0.3% | 81 |
|
|
2020
Q2 | $2.14M | Buy |
+8,000
| New | +$2.4M | 0.2% | 116 |
|
|
2019
Q1 | – | Sell |
-8,000
| Closed | -$2.41M | – | 199 |
|
|
2018
Q4 | $2.41M | Sell |
8,000
-6,000
| -43% | -$1.91M | 0.21% | 123 |
|
|
2018
Q3 | $4.95M | Buy |
+14,000
| New | +$4.82M | 0.36% | 80 |
|
|
2016
Q3 | – | Sell |
-1,500
| Closed | -$363K | – | 212 |
|
|
2016
Q2 | $363K | Hold |
1,500
| – | – | 0.09% | 175 |
|
|
2016
Q1 | $390K | Sell |
1,500
-1,500
| -50% | -$396K | 0.09% | 170 |
|
|
2015
Q4 | $919K | Hold |
3,000
| – | – | 0.21% | 126 |
|
|
2015
Q3 | $875K | Buy |
+3,000
| New | +$991K | 0.21% | 128 |
|
|
2015
Q2 | – | Sell |
-2,000
| Closed | -$844K | – | 215 |
|
|
2015
Q1 | $844K | Hold |
2,000
| – | – | 0.17% | 144 |
|
|
2014
Q4 | $679K | Buy |
+2,000
| New | +$647K | 0.14% | 181 |
|
|
2013
Q3 | – | Sell |
-6,000
| Closed | -$1.29M | – | 232 |
|
|
2013
Q2 | $1.29M | Buy |
+6,000
| New | +$1.28M | 0.51% | 65 |
|
Other funds holding BIIB
Cornerstone Advisors's BIIB Position: Q3 2025 in Review
Cornerstone Advisors sold out of Biogen (BIIB) in Q3 2025, closing a stake of 3,100 shares — an estimated $389K sold.
Cornerstone Advisors first reported a position in BIIB in Q2 2013 and held it in 29 quarters. The position peaked at $5.54M in Q2 2021. 908 funds tracked by Wall St. Rank hold BIIB as of Q3 2025.
- Cornerstone Advisors reported no remaining Biogen position as of Q3 2025 after selling out during the quarter.
- Cornerstone Advisors sold 3,100 Biogen shares in Q3 2025, an estimated $389K.
- Cornerstone Advisors first reported a position in Biogen in Q2 2013 and held it in 29 quarters.
- Cornerstone Advisors's Biogen position peaked at $5.54M in Q2 2021.
- 908 funds tracked by Wall St. Rank held Biogen as of Q3 2025.
Based on Cornerstone Advisors's 13F filing for Q3 2025, filed 7 Nov 2025.