Shell Asset Management’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 | $763K | Sell |
5,448
-2,992
| -35% | -$404K | 0.08% | 273 |
|
|
2025
Q2 | $1.06M | Buy |
8,440
+4,488
| +114% | +$559K | 0.04% | 351 |
|
|
2025
Q1 | $541K | Hold |
3,952
| – | – | 0.03% | 433 |
|
|
2024
Q4 | $604K | Sell |
3,952
-103
| -3% | -$17.4K | 0.03% | 432 |
|
|
2024
Q3 | $786K | Buy |
+4,055
| New | +$848K | 0.03% | 367 |
|
|
2024
Q1 | $940K | Sell |
4,055
-3,407
| -46% | -$798K | 0.04% | 308 |
|
|
2023
Q4 | $1.93M | Buy |
7,462
+2,430
| +48% | +$597K | 0.09% | 225 |
|
|
2023
Q3 | $1.29M | Sell |
5,032
-143
| -3% | -$38.2K | 0.05% | 312 |
|
|
2023
Q2 | $1.47M | Sell |
5,175
-726
| -12% | -$216K | 0.06% | 296 |
|
|
2023
Q1 | $1.64M | Sell |
5,901
-24
| -0.4% | -$6.64K | 0.07% | 274 |
|
|
2022
Q4 | $1.64M | Sell |
5,925
-1,309
| -18% | -$370K | 0.07% | 272 |
|
|
2022
Q3 | $1.93M | Sell |
7,234
-1,414
| -16% | -$300K | 0.08% | 258 |
|
|
2022
Q2 | $1.76M | Sell |
8,648
-52
| -0.6% | -$10.6K | 0.05% | 325 |
|
|
2022
Q1 | $1.83M | Sell |
8,700
-338
| -4% | -$73.5K | 0.04% | 346 |
|
|
2021
Q4 | $2.17M | Buy |
9,038
+2,136
| +31% | +$549K | 0.04% | 343 |
|
|
2021
Q3 | $1.95M | Sell |
6,902
-51
| -0.7% | -$16.7K | 0.04% | 338 |
|
|
2021
Q2 | $2.41M | Sell |
6,953
-5,408
| -44% | -$1.64M | 0.05% | 329 |
|
|
2021
Q1 | $3.46M | Sell |
12,361
-2,533
| -17% | -$683K | 0.07% | 279 |
|
|
2020
Q4 | $3.65M | Buy |
14,894
+2,504
| +20% | +$646K | 0.08% | 279 |
|
|
2020
Q3 | $3.52M | Sell |
12,390
-33
| -0.3% | -$9.2K | 0.08% | 235 |
|
|
2020
Q2 | $3.32M | Buy |
12,423
+3,075
| +33% | +$924K | 0.08% | 240 |
|
|
2020
Q1 | $2.96M | Sell |
9,348
-2,162
| -19% | -$656K | 0.08% | 246 |
|
|
2019
Q4 | $3.42M | Sell |
11,510
-94
| -0.8% | -$26.1K | 0.07% | 290 |
|
|
2019
Q3 | $2.7M | Hold |
11,604
| – | – | 0.06% | 303 |
|
|
2019
Q2 | $2.71M | Sell |
11,604
-941
| -8% | -$217K | 0.06% | 305 |
|
|
2019
Q1 | $2.96M | Sell |
12,545
-525
| -4% | -$165K | 0.07% | 292 |
|
|
2018
Q4 | $3.93M | Sell |
13,070
-2,842
| -18% | -$907K | 0.1% | 239 |
|
|
2018
Q3 | $5.62M | Buy |
15,912
+42
| +0.3% | +$14.5K | 0.11% | 221 |
|
|
2018
Q2 | $4.61M | Buy |
15,870
+1,965
| +14% | +$552K | 0.09% | 248 |
|
|
2018
Q1 | $3.81M | Sell |
13,905
-9,769
| -41% | -$3.03M | 0.08% | 275 |
|
|
2017
Q4 | $7.54M | Buy |
23,674
+3,319
| +16% | +$1.06M | 0.15% | 181 |
|
|
2017
Q3 | $6.37M | Sell |
20,355
-5,613
| -22% | -$1.66M | 0.14% | 186 |
|
|
2017
Q2 | $7.05M | Sell |
25,968
-168
| -0.6% | -$44.4K | 0.15% | 182 |
|
|
2017
Q1 | $7.15M | Sell |
26,136
-3,103
| -11% | -$877K | 0.16% | 175 |
|
|
2016
Q4 | $8.29M | Sell |
29,239
-2,369
| -7% | -$702K | 0.19% | 138 |
|
|
2016
Q3 | $9.89M | Sell |
31,608
-7,901
| -20% | -$2.34M | 0.21% | 135 |
|
|
2016
Q2 | $9.55M | Buy |
39,509
+8,399
| +27% | +$2.21M | 0.22% | 119 |
|
|
2016
Q1 | $8.1M | Buy |
31,110
+3,684
| +13% | +$973K | 0.19% | 136 |
|
|
2015
Q4 | $8.4M | Sell |
27,426
-11,456
| -29% | -$3.29M | 0.2% | 120 |
|
|
2015
Q3 | $12.9M | Buy |
38,882
+6,743
| +21% | +$2.23M | 0.2% | 102 |
|
|
2015
Q2 | $13M | Sell |
32,139
-3,225
| -9% | -$1.29M | 0.26% | 94 |
|
|
2015
Q1 | $14.9M | Sell |
35,364
-9,623
| -21% | -$3.79M | 0.26% | 104 |
|
|
2014
Q4 | $15.3M | Buy |
44,987
+6,105
| +16% | +$1.98M | 0.24% | 100 |
|
|
2014
Q3 | $12.9M | Sell |
38,882
-113
| -0.3% | -$37.3K | 0.2% | 105 |
|
|
2014
Q2 | $12.3M | Sell |
38,995
-4,820
| -11% | -$1.45M | 0.19% | 111 |
|
|
2014
Q1 | $13.4M | Sell |
43,815
-114
| -0.3% | -$36.2K | 0.22% | 94 |
|
|
2013
Q4 | $12.3M | Sell |
43,929
-21,365
| -33% | -$5.53M | 0.21% | 95 |
|
|
2013
Q3 | $15.7M | Sell |
65,294
-1,635
| -2% | -$366K | 0.29% | 74 |
|
|
2013
Q2 | $14.4M | Buy |
+66,929
| New | +$14.3M | 0.27% | 78 |
|
Other funds holding BIIB
Shell Asset Management's BIIB Position: Q3 2025 in Review
Shell Asset Management reduced its Biogen (BIIB) stake by 35% in Q3 2025, selling an estimated $404K and leaving 5,448 shares worth $763K. The position accounts for 0.08% of the portfolio, ranked #273.
Shell Asset Management first reported a position in BIIB in Q2 2013 and has held it in 49 quarters since. The position peaked at $15.7M in Q3 2013. 906 funds tracked by Wall St. Rank hold BIIB as of Q3 2025.
- Shell Asset Management held 5,448 shares of Biogen worth $763K as of Q3 2025.
- Shell Asset Management sold 2,992 Biogen shares in Q3 2025, an estimated $404K.
- Biogen made up 0.08% of Shell Asset Management's portfolio in Q3 2025, its #273 holding.
- Shell Asset Management first reported a position in Biogen in Q2 2013 and has held it in 49 quarters since.
- Shell Asset Management's Biogen position peaked at $15.7M in Q3 2013.
- 906 funds tracked by Wall St. Rank held Biogen as of Q3 2025.
Based on Shell Asset Management's 13F filing for Q3 2025, filed 7 Nov 2025.