William Blair & Company’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Shares Change % | Capital Flow | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $1.86M | Buy |
14,844
+1,561
| +12% | +$196K | 0.01% | 731 |
|
|
2025
Q1 | $1.82M | Buy |
13,283
+234
| +2% | +$32K | 0.01% | 736 |
|
|
2024
Q4 | $2M | Buy |
13,049
+894
| +7% | +$137K | 0.01% | 715 |
|
|
2024
Q3 | $2.36M | Sell |
12,155
-939
| -7% | -$182K | 0.01% | 661 |
|
|
2024
Q2 | $3.04M | Buy |
13,094
+227
| +2% | +$52.6K | 0.01% | 592 |
|
|
2024
Q1 | $2.77M | Buy |
12,867
+1,132
| +10% | +$244K | 0.01% | 606 |
|
|
2023
Q4 | $3.04M | Sell |
11,735
-2,388
| -17% | -$618K | 0.01% | 573 |
|
|
2023
Q3 | $3.63M | Buy |
14,123
+3,568
| +34% | +$917K | 0.01% | 511 |
|
|
2023
Q2 | $3.01M | Sell |
10,555
-357
| -3% | -$102K | 0.01% | 569 |
|
|
2023
Q1 | $3.03M | Buy |
10,912
+580
| +6% | +$161K | 0.01% | 556 |
|
|
2022
Q4 | $2.86M | Sell |
10,332
-2,156
| -17% | -$597K | 0.01% | 548 |
|
|
2022
Q3 | $3.33M | Sell |
12,488
-1,526
| -11% | -$407K | 0.02% | 507 |
|
|
2022
Q2 | $2.86M | Sell |
14,014
-512
| -4% | -$104K | 0.01% | 545 |
|
|
2022
Q1 | $3.06M | Sell |
14,526
-3,236
| -18% | -$681K | 0.01% | 589 |
|
|
2021
Q4 | $4.26M | Buy |
17,762
+4,077
| +30% | +$978K | 0.01% | 511 |
|
|
2021
Q3 | $3.87M | Buy |
13,685
+2,297
| +20% | +$650K | 0.01% | 513 |
|
|
2021
Q2 | $3.94M | Buy |
11,388
+1,072
| +10% | +$371K | 0.01% | 517 |
|
|
2021
Q1 | $2.89M | Buy |
10,316
+344
| +3% | +$96.2K | 0.01% | 583 |
|
|
2020
Q4 | $2.44M | Sell |
9,972
-412
| -4% | -$101K | 0.01% | 597 |
|
|
2020
Q3 | $2.95M | Buy |
10,384
+1,038
| +11% | +$294K | 0.01% | 501 |
|
|
2020
Q2 | $2.5M | Sell |
9,346
-56
| -0.6% | -$15K | 0.01% | 508 |
|
|
2020
Q1 | $2.98M | Sell |
9,402
-2,489
| -21% | -$788K | 0.02% | 442 |
|
|
2019
Q4 | $3.53M | Buy |
+11,891
| New | +$3.53M | 0.02% | 477 |
|
|
2019
Q3 | – | Sell |
-10,244
| Closed | – | – | 1697 |
|
|
2019
Q2 | $0 | Sell |
10,244
-4,974
| -33% | – | ﹤0.01% | 1731 |
|
|
2019
Q1 | $3.6M | Sell |
15,218
-1,437
| -9% | -$340K | 0.02% | 427 |
|
|
2018
Q4 | $5.01M | Sell |
16,655
-1,794
| -10% | -$540K | 0.04% | 333 |
|
|
2018
Q3 | $6.52M | Buy |
18,449
+2,735
| +17% | +$966K | 0.04% | 324 |
|
|
2018
Q2 | $4.56M | Sell |
15,714
-8,323
| -35% | -$2.42M | 0.03% | 372 |
|
|
2018
Q1 | $6.58M | Sell |
24,037
-1,062
| -4% | -$291K | 0.05% | 298 |
|
|
2017
Q4 | $8M | Buy |
25,099
+1,046
| +4% | +$333K | 0.05% | 269 |
|
|
2017
Q3 | $7.53M | Buy |
24,053
+9,340
| +63% | +$2.92M | 0.06% | 268 |
|
|
2017
Q2 | $3.99M | Sell |
14,713
-1,185
| -7% | -$322K | 0.03% | 397 |
|
|
2017
Q1 | $4.51M | Sell |
15,898
-8,225
| -34% | -$2.33M | 0.04% | 341 |
|
|
2016
Q4 | $6.84M | Buy |
24,123
+383
| +2% | +$109K | 0.06% | 258 |
|
|
2016
Q3 | $7.43M | Buy |
23,740
+198
| +0.8% | +$62K | 0.07% | 247 |
|
|
2016
Q2 | $5.69M | Sell |
23,542
-15,530
| -40% | -$3.76M | 0.05% | 275 |
|
|
2016
Q1 | $10.2M | Buy |
39,072
+1,577
| +4% | +$411K | 0.1% | 196 |
|
|
2015
Q4 | $11.5M | Sell |
37,495
-45,638
| -55% | -$14M | 0.11% | 195 |
|
|
2015
Q3 | $24.3M | Buy |
83,133
+49,636
| +148% | +$14.5M | 0.21% | 124 |
|
|
2015
Q2 | $13.5M | Buy |
33,497
+7,519
| +29% | +$3.04M | 0.02% | 788 |
|
|
2015
Q1 | $11M | Buy |
25,978
+8,849
| +52% | +$3.74M | 0.02% | 824 |
|
|
2014
Q4 | $5.81M | Buy |
17,129
+6,912
| +68% | +$2.35M | 0.01% | 1010 |
|
|
2014
Q3 | $3.38M | Buy |
10,217
+867
| +9% | +$287K | 0.01% | 1110 |
|
|
2014
Q2 | $2.95M | Sell |
9,350
-25,223
| -73% | -$7.95M | ﹤0.01% | 1133 |
|
|
2014
Q1 | $10.6M | Buy |
34,573
+2,974
| +9% | +$910K | 0.02% | 809 |
|
|
2013
Q4 | $8.84M | Buy |
31,599
+10,891
| +53% | +$3.05M | 0.01% | 815 |
|
|
2013
Q3 | $4.99M | Buy |
20,708
+367
| +2% | +$88.3K | 0.01% | 898 |
|
|
2013
Q2 | $4.38M | Buy |
+20,341
| New | +$4.38M | 0.01% | 903 |
|