Alyeska Investment Group’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Shares Change % | Capital Flow | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $63.9M | Buy |
+508,773
| New | +$63.9M | 0.23% | 128 |
|
|
2024
Q3 | – | Sell |
-401,005
| Closed | -$93M | – | 539 |
|
|
2024
Q2 | $93M | Buy |
401,005
+234,312
| +141% | +$54.3M | 0.53% | 50 |
|
|
2024
Q1 | $35.9M | Sell |
166,693
-255,987
| -61% | -$55.2M | 0.22% | 151 |
|
|
2023
Q4 | $109M | Sell |
422,680
-19,396
| -4% | -$5.02M | 0.72% | 33 |
|
|
2023
Q3 | $114M | Buy |
442,076
+74,808
| +20% | +$19.2M | 0.77% | 25 |
|
|
2023
Q2 | $105M | Buy |
+367,268
| New | +$105M | 0.78% | 23 |
|
|
2023
Q1 | – | Sell |
-25,064
| Closed | -$6.94M | – | 431 |
|
|
2022
Q4 | $6.94M | Buy |
+25,064
| New | +$6.94M | 0.07% | 236 |
|
|
2021
Q3 | – | Sell |
-65,367
| Closed | -$22.6M | – | 688 |
|
|
2021
Q2 | $22.6M | Buy |
+65,367
| New | +$22.6M | 0.26% | 114 |
|
|
2017
Q3 | – | Sell |
-149,507
| Closed | -$40.6M | – | 436 |
|
|
2017
Q2 | $40.6M | Buy |
+149,507
| New | +$40.6M | 0.34% | 104 |
|
|
2016
Q4 | – | Sell |
-149,217
| Closed | -$46.7M | – | 452 |
|
|
2016
Q3 | $46.7M | Buy |
+149,217
| New | +$46.7M | 0.43% | 69 |
|
|
2016
Q2 | – | Sell |
-23,381
| Closed | -$6.09M | – | 414 |
|
|
2016
Q1 | $6.09M | Buy |
23,381
+17,546
| +301% | +$4.57M | 0.06% | 268 |
|
|
2015
Q4 | $1.79M | Buy |
+5,835
| New | +$1.79M | 0.02% | 304 |
|
|
2015
Q3 | – | Sell |
-7,500
| Closed | -$3.03M | – | 457 |
|
|
2015
Q2 | $3.03M | Buy |
+7,500
| New | +$3.03M | 0.03% | 297 |
|
|
2015
Q1 | – | Hold |
0
| – | – | – | 469 |
|
|
2013
Q3 | – | Sell |
-35,000
| Closed | -$7.53M | – | 257 |
|
|
2013
Q2 | $7.53M | Buy |
+35,000
| New | +$7.53M | 0.37% | 69 |
|