Holding/activity history for Biogen Inc. (BIIB)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price |
| 2024 Q1 | 24,400 | 2.18 | Add 0.57% | 0.01 | $215.61 |
| 2023 Q4 | 24,261 | 2.81 | $258.77 | ||
| 2023 Q3 | 24,261 | 3.09 | Add 32.86% | 0.76 | $257.00 |
| 2023 Q2 | 18,261 | 2.47 | $284.87 | ||
| 2023 Q1 | 18,261 | 2.64 | $278.02 | ||
| 2022 Q4 | 18,261 | 2.72 | $276.93 | ||
| 2022 Q3 | 18,261 | 2.82 | Reduce 37.25% | 1.67 | $267.02 |
| 2022 Q2 | 29,100 | 2.89 | $203.95 | ||
| 2022 Q1 | 29,100 | 2.60 | Add 59.89% | 0.97 | $210.58 |
| 2021 Q4 | 18,200 | 1.99 | $239.95 | ||
| 2021 Q3 | 18,200 | 2.49 | $282.97 | ||
| 2021 Q2 | 18,200 | 3.21 | $346.26 | ||
| 2021 Q1 | 18,200 | 3.03 | Add 37.88% | 0.83 | $279.73 |
| 2020 Q4 | 13,200 | 2.47 | $244.85 | ||
| 2020 Q3 | 13,200 | 3.78 | Add 32.00% | 0.92 | $283.71 |
| 2020 Q2 | 10,000 | 2.89 | $267.60 | ||
| 2020 Q1 | 10,000 | 4.70 | $316.40 | ||
| 2019 Q4 | 10,000 | 3.35 | Add 25.00% | 0.67 | $296.70 |
| 2019 Q3 | 8,000 | 3.09 | Add 33.33% | 0.77 | $232.88 |
| 2019 Q2 | 6,000 | 3.27 | Add 20.00% | 0.54 | $233.83 |
| 2019 Q1 | 5,000 | 3.83 | Buy | 3.83 | $236.40 |