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Pzena Investment Management
> BIIB
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | BIOGEN INC. | BIIB | 1,618 | -766 | 460,887,000 | 460,250,000 | $284,849.81 |
| 09/30/2022 | BIOGEN INC. | BIIB | 2,384 | 0 | 637,000 | 151,000 | $267.20 |
| 06/30/2022 | BIOGEN INC. | BIIB | 2,384 | 0 | 486,000 | -16,000 | $203.86 |
| 03/31/2022 | BIOGEN INC. | BIIB | 2,384 | 2,384 | 502,000 | 502,000 | $210.57 |
| 12/31/2020 | BIOGEN INC. | BIIB | 0 | -2,857 | 0 | -810,000 | |
| 09/30/2020 | BIOGEN INC. | BIIB | 2,857 | -386 | 810,000 | -58,000 | $283.51 |
| 06/30/2020 | BIOGEN INC. | BIIB | 3,243 | -43,908 | 868,000 | -14,050,000 | $267.65 |
| 03/31/2020 | BIOGEN INC. | BIIB | 47,151 | -2,519 | 14,918,000 | 179,000 | $316.39 |
| 12/31/2019 | BIOGEN INC. | BIIB | 49,670 | 46,477 | 14,739,000 | 13,996,000 | $296.74 |
| 09/30/2019 | BIOGEN INC. | BIIB | 3,193 | 875 | 743,000 | 201,000 | $232.70 |
| 06/30/2019 | BIOGEN INC. | BIIB | 2,318 | -133 | 542,000 | -37,000 | $233.82 |
| 03/31/2019 | BIOGEN INC. | BIIB | 2,451 | 345 | 579,000 | -55,000 | $236.23 |
| 12/31/2018 | BIOGEN INC. | BIIB | 2,106 | 242 | 634,000 | -25,000 | $301.04 |
| 09/30/2018 | BIOGEN INC. | BIIB | 1,864 | 74 | 659,000 | 139,000 | $353.54 |
| 06/30/2018 | BIOGEN INC. | BIIB | 1,790 | 43 | 520,000 | 42,000 | $290.50 |
| 03/31/2018 | BIOGEN INC. | BIIB | 1,747 | 816 | 478,000 | 181,000 | $273.61 |
| 12/31/2017 | BIOGEN INC. | BIIB | 931 | 931 | 297,000 | 297,000 | $319.01 |
| 06/30/2017 | BIOGEN INC. | BIIB | 0 | -759 | 0 | -208,000 | |
| 03/31/2017 | BIOGEN INC. | BIIB | 759 | 759 | 208,000 | 208,000 | $274.04 |
| 12/31/2016 | BIOGEN INC. | BIIB | 0 | -642 | 0 | -201,000 | |
| 09/30/2016 | BIOGEN INC. | BIIB | 642 | 642 | 201,000 | 201,000 | $313.08 |
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