Sectoral 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 | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $386K | Sell |
1,850
-305
| -14% | -$56.2K | 0.32% | 63 |
|
|
2025
Q4 | $379K | Sell |
2,155
-220
| -9% | -$35.9K | 0.3% | 63 |
|
|
2025
Q3 | $333K | Hold |
2,375
| – | – | 0.21% | 72 |
|
|
2025
Q2 | $298K | Sell |
2,375
-480
| -17% | -$59.8K | 0.2% | 79 |
|
|
2025
Q1 | $391K | Sell |
2,855
-997
| -26% | -$143K | 0.3% | 57 |
|
|
2024
Q4 | $589K | Sell |
3,852
-2,175
| -36% | -$367K | 0.39% | 50 |
|
|
2024
Q3 | $1.17M | Sell |
6,027
-110
| -2% | -$23K | 0.69% | 45 |
|
|
2024
Q2 | $1.42M | Sell |
6,137
-830
| -12% | -$180K | 0.58% | 49 |
|
|
2024
Q1 | $1.5M | Sell |
6,967
-8,860
| -56% | -$2.08M | 0.59% | 52 |
|
|
2023
Q4 | $4.1M | Buy |
15,827
+815
| +5% | +$200K | 1.76% | 14 |
|
|
2023
Q3 | $3.86M | Buy |
15,012
+946
| +7% | +$253K | 0.75% | 58 |
|
|
2023
Q2 | $4.01M | Buy |
14,066
+1,064
| +8% | +$317K | 0.67% | 65 |
|
|
2023
Q1 | $3.61M | Sell |
13,002
-350
| -3% | -$96.8K | 0.69% | 59 |
|
|
2022
Q4 | $3.7M | Buy |
13,352
+100
| +0.8% | +$28.2K | 0.72% | 60 |
|
|
2022
Q3 | $3.54M | Sell |
13,252
-250
| -2% | -$53.1K | 0.7% | 63 |
|
|
2022
Q2 | $2.75M | Sell |
13,502
-3,700
| -22% | -$756K | 0.55% | 69 |
|
|
2022
Q1 | $3.62M | Buy |
17,202
+120
| +0.7% | +$26.1K | 0.64% | 59 |
|
|
2021
Q4 | $4.1M | Sell |
17,082
-2,350
| -12% | -$604K | 0.62% | 63 |
|
|
2021
Q3 | $5.5M | Hold |
19,432
| – | – | 0.46% | 87 |
|
|
2021
Q2 | $6.73M | Buy |
19,432
+6,950
| +56% | +$2.11M | 0.54% | 74 |
|
|
2021
Q1 | $3.49M | Sell |
12,482
-300
| -2% | -$80.9K | 0.26% | 84 |
|
|
2020
Q4 | $3.13M | Sell |
12,782
-9,850
| -44% | -$2.54M | 0.22% | 78 |
|
|
2020
Q3 | $6.42M | Buy |
22,632
+16,240
| +254% | +$4.53M | 0.55% | 63 |
|
|
2020
Q2 | $1.71M | Sell |
6,392
-29,600
| -82% | -$8.9M | 0.16% | 85 |
|
|
2020
Q1 | $11.4M | Buy |
35,992
+3,450
| +11% | +$1.05M | 2.19% | 13 |
|
|
2019
Q4 | $9.66M | Buy |
+32,542
| New | +$9.03M | 1.44% | 31 |
|
|
2019
Q1 | – | Sell |
-18,301
| Closed | -$5.51M | – | 107 |
|
|
2018
Q4 | $5.51M | Buy |
18,301
+16,639
| +1,001% | +$5.31M | 0.75% | 46 |
|
|
2018
Q3 | $587K | Buy |
+1,662
| New | +$572K | 0.06% | 82 |
|
|
2017
Q2 | – | Sell |
-11,711
| Closed | -$3.2M | – | 63 |
|
|
2017
Q1 | $3.2M | Sell |
11,711
-73,130
| -86% | -$20.7M | 0.37% | 45 |
|
|
2016
Q4 | $24.1M | Buy |
+84,841
| New | +$25.1M | 2.67% | 19 |
|
|
2016
Q2 | – | Sell |
-234,572
| Closed | -$61.1M | – | 68 |
|
|
2016
Q1 | $61.1M | Sell |
234,572
-56,317
| -19% | -$14.9M | 2.95% | 12 |
|
|
2015
Q4 | $89.1M | Sell |
290,889
-334,207
| -53% | -$96M | 3.8% | 7 |
|
|
2015
Q3 | $182M | Buy |
625,096
+137,664
| +28% | +$45.5M | 8.36% | 1 |
|
|
2015
Q2 | $197M | Sell |
487,432
-10,780
| -2% | -$4.33M | 8.21% | 1 |
|
|
2015
Q1 | $210M | Buy |
498,212
+58,784
| +13% | +$23.2M | 7.99% | 1 |
|
|
2014
Q4 | $149M | Sell |
439,428
-74,978
| -15% | -$24.3M | 6.69% | 1 |
|
|
2014
Q3 | $170M | Sell |
514,406
-46,973
| -8% | -$15.5M | 7.16% | 1 |
|
|
2014
Q2 | $177M | Buy |
561,379
+24,986
| +5% | +$7.52M | 7.5% | 1 |
|
|
2014
Q1 | $164M | Sell |
536,393
-8,182
| -2% | -$2.6M | 6.75% | 2 |
|
|
2013
Q4 | $152M | Buy |
544,575
+258,375
| +90% | +$66.8M | 6.57% | 1 |
|
|
2013
Q3 | $68.9M | Buy |
286,200
+2,900
| +1% | +$649K | 3.32% | 7 |
|
|
2013
Q2 | $61M | Buy |
+283,300
| New | +$60.5M | 1.8% | 23 |
|
Other funds holding BIIB
VCM
VPM
Sectoral Asset Management's BIIB Position: Q1 2026 in Review
Sectoral Asset Management reduced its Biogen (BIIB) stake by 14% in Q1 2026, selling an estimated $56.2K and leaving 1,850 shares worth $386K. The position accounts for 0.32% of the portfolio, ranked #63.
Sectoral Asset Management first reported a position in BIIB in Q2 2013 and has held it in 42 quarters since. The position peaked at $210M in Q1 2015. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Sectoral Asset Management held 1,850 shares of Biogen worth $386K as of Q1 2026.
- Sectoral Asset Management sold 305 Biogen shares in Q1 2026, an estimated $56.2K.
- Biogen made up 0.32% of Sectoral Asset Management's portfolio in Q1 2026, its #63 holding.
- Sectoral Asset Management first reported a position in Biogen in Q2 2013 and has held it in 42 quarters since.
- Sectoral Asset Management's Biogen position peaked at $210M in Q1 2015.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Sectoral Asset Management's 13F filing for Q1 2026, filed 15 May 2026.