Biogen Inc. (BIIB)
NASDAQ: BIIB
· Real-Time Price · USD
138.66
3.72 (2.76%)
At close: Aug 15, 2025, 3:59 PM
139.59
0.67%
After-hours: Aug 15, 2025, 07:58 PM EDT
13F Institute Ownership
Total Institutes of 913 in Biogen reduced their positions with a decrease of 1 investors compared to the previous quarter. A reduction of 4.46M shares, as total invested capital declined by $2.73B with ownership percentage dropping from 90.20% to 86.90%.
Options Activity
Institutions are holding more Puts Contracts as Calls Contracts, indicating a bearish sentiment.
Put/Call 1.941
1.94
Call Flow 2,091,150
34%
Put Flow 4,059,004
66%
Top Shareholders
| Institute | Ownership | Shares | Shares % Change | Market Value | Portfolio | Filing Date |
|---|---|---|---|---|---|---|
| Vanguard Group Inc | 11.66% | 17.03M | +1.70% | 2.33B | 0.04% | May 09, 2025 |
| Primecap Management Co/ca/ | 10.91% | 15.94M | -0.64% | 2.18B | 1.80% | May 09, 2025 |
| Blackrock, Inc. | 10.41% | 15.21M | -1.7% | 2.08B | 0.04% | May 02, 2025 |
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