Ken Fisher’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 | $57.3M | Buy |
312,618
+19,349
| +7% | +$3.57M | 0.02% | 218 |
|
|
2025
Q4 | $51.6M | Buy |
293,269
+15,984
| +6% | +$2.61M | 0.02% | 236 |
|
|
2025
Q3 | $38.8M | Sell |
277,285
-11,852
| -4% | -$1.6M | 0.01% | 254 |
|
|
2025
Q2 | $36.3M | Sell |
289,137
-9,893
| -3% | -$1.23M | 0.01% | 247 |
|
|
2025
Q1 | $40.9M | Buy |
299,030
+118,106
| +65% | +$16.9M | 0.02% | 236 |
|
|
2024
Q4 | $27.7M | Buy |
180,924
+114,156
| +171% | +$19.3M | 0.01% | 307 |
|
|
2024
Q3 | $12.9M | Sell |
66,768
-1,719
| -3% | -$360K | 0.01% | 388 |
|
|
2024
Q2 | $15.9M | Buy |
68,487
+6,943
| +11% | +$1.51M | 0.01% | 365 |
|
|
2024
Q1 | $13.3M | Sell |
61,544
-2,234
| -4% | -$523K | 0.01% | 384 |
|
|
2023
Q4 | $16.5M | Sell |
63,778
-50,021
| -44% | -$12.3M | 0.01% | 350 |
|
|
2023
Q3 | $29.2M | Sell |
113,799
-16,518
| -13% | -$4.42M | 0.02% | 303 |
|
|
2023
Q2 | $37.1M | Sell |
130,317
-2,500
| -2% | -$744K | 0.02% | 290 |
|
|
2023
Q1 | $36.9M | Buy |
132,817
+322
| +0.2% | +$89.1K | 0.02% | 285 |
|
|
2022
Q4 | $36.7M | Buy |
132,495
+2,034
| +2% | +$574K | 0.02% | 282 |
|
|
2022
Q3 | $34.8M | Sell |
130,461
-2,387
| -2% | -$507K | 0.03% | 280 |
|
|
2022
Q2 | $27.1M | Buy |
132,848
+504
| +0.4% | +$103K | 0.02% | 280 |
|
|
2022
Q1 | $27.9M | Buy |
132,344
+310
| +0.2% | +$67.4K | 0.02% | 290 |
|
|
2021
Q4 | $31.7M | Buy |
132,034
+23,545
| +22% | +$6.05M | 0.02% | 283 |
|
|
2021
Q3 | $30.7M | Buy |
108,489
+3,414
| +3% | +$1.12M | 0.02% | 276 |
|
|
2021
Q2 | $36.4M | Buy |
105,075
+6,497
| +7% | +$1.97M | 0.02% | 263 |
|
|
2021
Q1 | $27.6M | Sell |
98,578
-6
| -0% | -$1.62K | 0.02% | 283 |
|
|
2020
Q4 | $24.1M | Buy |
98,584
+4,648
| +5% | +$1.2M | 0.02% | 291 |
|
|
2020
Q3 | $26.6M | Buy |
93,936
+1,031
| +1% | +$288K | 0.02% | 253 |
|
|
2020
Q2 | $24.9M | Sell |
92,905
-720
| -0.8% | -$216K | 0.02% | 259 |
|
|
2020
Q1 | $29.6M | Buy |
93,625
+2,848
| +3% | +$864K | 0.04% | 215 |
|
|
2019
Q4 | $26.9M | Sell |
90,777
-33,205
| -27% | -$9.21M | 0.03% | 246 |
|
|
2019
Q3 | $28.9M | Buy |
123,982
+4,012
| +3% | +$934K | 0.03% | 249 |
|
|
2019
Q2 | $28.1M | Sell |
119,970
-15,901
| -12% | -$3.67M | 0.03% | 263 |
|
|
2019
Q1 | $32.1M | Sell |
135,871
-2,081
| -2% | -$655K | 0.04% | 241 |
|
|
2018
Q4 | $41.5M | Buy |
137,952
+7,771
| +6% | +$2.48M | 0.06% | 196 |
|
|
2018
Q3 | $46M | Buy |
130,181
+2,068
| +2% | +$712K | 0.06% | 210 |
|
|
2018
Q2 | $37.2M | Buy |
128,113
+4,704
| +4% | +$1.32M | 0.05% | 230 |
|
|
2018
Q1 | $33.8M | Buy |
123,409
+24,129
| +24% | +$7.49M | 0.04% | 236 |
|
|
2017
Q4 | $31.6M | Sell |
99,280
-8,584
| -8% | -$2.75M | 0.04% | 242 |
|
|
2017
Q3 | $33.8M | Sell |
107,864
-1,265
| -1% | -$375K | 0.05% | 226 |
|
|
2017
Q2 | $29.6M | Sell |
109,129
-285
| -0.3% | -$75.4K | 0.04% | 236 |
|
|
2017
Q1 | $29.9M | Buy |
109,414
+7,527
| +7% | +$2.13M | 0.05% | 221 |
|
|
2016
Q4 | $28.9M | Buy |
101,887
+1,169
| +1% | +$347K | 0.05% | 219 |
|
|
2016
Q3 | $31.5M | Sell |
100,718
-1,201
| -1% | -$356K | 0.06% | 213 |
|
|
2016
Q2 | $25.7M | Buy |
101,919
+11,514
| +13% | +$3.03M | 0.05% | 223 |
|
|
2016
Q1 | $24.3M | Sell |
90,405
-20,070
| -18% | -$5.3M | 0.05% | 220 |
|
|
2015
Q4 | $33.8M | Sell |
110,475
-1,973
| -2% | -$567K | 0.07% | 190 |
|
|
2015
Q3 | $32.8M | Buy |
112,448
+31,516
| +39% | +$10.4M | 0.07% | 186 |
|
|
2015
Q2 | $32.7M | Sell |
80,932
-126
| -0.2% | -$50.6K | 0.06% | 199 |
|
|
2015
Q1 | $34.2M | Buy |
81,058
+1,804
| +2% | +$711K | 0.07% | 195 |
|
|
2014
Q4 | $26.9M | Buy |
79,254
+797
| +1% | +$258K | 0.06% | 213 |
|
|
2014
Q3 | $26M | Sell |
78,457
-10,428
| -12% | -$3.44M | 0.06% | 197 |
|
|
2014
Q2 | $28M | Buy |
88,885
+70,619
| +387% | +$21.3M | 0.06% | 195 |
|
|
2014
Q1 | $5.59M | Buy |
18,266
+16,228
| +796% | +$5.15M | 0.01% | 306 |
|
|
2013
Q4 | $570K | Buy |
2,038
+264
| +15% | +$68.3K | ﹤0.01% | 399 |
|
|
2013
Q3 | $427K | Buy |
1,774
+7
| +0.4% | +$1.57K | ﹤0.01% | 405 |
|
|
2013
Q2 | $380K | Buy |
+1,767
| New | +$378K | ﹤0.01% | 407 |
|
Other funds holding BIIB
VCM
VPM
Ken Fisher's BIIB Position: Q1 2026 in Review
Ken Fisher increased its Biogen (BIIB) stake by 6.6% in Q1 2026, buying an estimated $3.57M and bringing the position to 312,618 shares worth $57.3M. The position accounts for 0.02% of the portfolio, ranked #218.
Ken Fisher first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Ken Fisher held 312,618 shares of Biogen worth $57.3M as of Q1 2026.
- Ken Fisher bought 19,349 Biogen shares in Q1 2026, an estimated $3.57M.
- Biogen made up 0.02% of Ken Fisher's portfolio in Q1 2026, its #218 holding.
- Ken Fisher first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
- 1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Fisher Asset Management's 13F filing for Q1 2026, filed 5 May 2026.