Lee Ainslie - Maverick Capital
Holding/activity history for Biogen Inc. (BIIB)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price |
| 2023 Q4 | 1,600 | 0.01 | Buy | 0.01 | $258.75 |
| 2023 Q3 | 0 | 0 | Sell 100.00% | 0.01 | |
| 2023 Q2 | 983 | 0.01 | Buy | 0.01 | $284.84 |
| 2021 Q4 | 0 | 0 | Sell 100.00% | 0.01 | |
| 2021 Q3 | 3,112 | 0.01 | Buy | 0.01 | $283.10 |
| 2020 Q4 | 0 | 0 | Sell 100.00% | 0.01 | |
| 2020 Q3 | 1,436 | 0.01 | Reduce 68.10% | 0.02 | $283.43 |
| 2020 Q2 | 4,501 | 0.03 | Buy | 0.03 | $267.50 |
| 2019 Q4 | 0 | 0 | Sell 100.00% | 0.02 | |
| 2019 Q3 | 4,919 | 0.02 | Buy | 0.02 | $232.77 |
| 2017 Q3 | 0 | 0 | Sell 100.00% | 0.05 | |
| 2017 Q2 | 15,230 | 0.05 | Add 58.48% | 0.02 | $271.37 |
| 2017 Q1 | 9,610 | 0.03 | Reduce 11.67% | 0.00 | $273.47 |
| 2016 Q4 | 10,880 | 0.04 | Add 4.82% | 0.00 | $283.55 |
| 2016 Q3 | 10,380 | 0.04 | Reduce 5.72% | 0.00 | $313.01 |
| 2016 Q2 | 11,010 | 0.04 | Add 17.50% | 0.01 | $241.78 |
| 2016 Q1 | 9,370 | 0.04 | Buy | 0.04 | $260.30 |