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BLACKROCK ADVISORS LLC
> BIIB
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2016 | BIOGEN INC. | BIIB | 0 | -19,700 | 0 | -6,167,000 | |
| 09/30/2016 | BIOGEN INC. | BIIB | 19,700 | 19,700 | 6,167,000 | 6,167,000 | $313.05 |
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