Biogen Inc. (BIIB)
NASDAQ: BIIB
· Real-Time Price · USD
159.88
4.63 (2.98%)
At close: Oct 03, 2025, 3:59 PM
159.00
-0.55%
After-hours: Oct 03, 2025, 07:58 PM EDT
13F Institute Ownership
Total Institutes of 890 in Biogen reduced their positions with a decrease of 28 investors compared to the previous quarter. A reduction of 4.17M shares, as total invested capital declined by $1.87B with ownership percentage dropping from 86.91% to 84.17%.
Options Activity
Institutions are holding Calls/Puts contracts nearly balanced, indicating a neutral sentiment.
Put/Call 0.965
0.96
Call Flow 2,188,200
51%
Put Flow 2,110,624
49%
Top Shareholders
| Institute | Ownership | Shares | Shares % Change | Market Value | Portfolio | Filing Date |
|---|---|---|---|---|---|---|
| Vanguard Group Inc | 11.85% | 17.29M | +1.51% | 2.17B | 0.04% | Aug 11, 2025 |
| Primecap Management Co/ca/ | 10.83% | 15.8M | -0.89% | 1.98B | 1.57% | Aug 11, 2025 |
| Blackrock, Inc. | 9.29% | 13.56M | -10.88% | 1.7B | 0.03% | Aug 12, 2025 |
Stop Guessing, Start Knowing.
Cut through market noise with actionable insights that actually help you make confident investment decisions. No more endless research or gut-based guessing.
- Unlimited access to all data and tools
- Unlimited access to all data and tools, giving you the edge over everyone else in the market.
- Realtime Options & Dark Pool Data
- Instant access to live options & dark pool data to spot opportunities and trade with precision before the market moves.
- Top Wallstreet Analyst Ratings
- Follow ratings from the best analysts on Wall Street to stay ahead.
- Up to 30 years financial history
- We deliver premium Wall Street data with top-tier accuracy and up to 30 years of history.