$BIIB
Biogen Inc. Common Stock
XNAS•Health Care•Biological Products, (No Diagnostic Substances)
As of the latest tick, BIIB is trading at $210.74, up 0.87% versus the previous close of $208.92. Our scanner has flagged BIIB 36 times on unusual volume in the last 30 days.
Key Stats
- Price
- $210.74
- Change today
- +0.87%
- Previous close
- $208.92
- 52-week range
- $121.05 – $219.72
- Market cap
- $30.84B
- Institutional own.
- 208.39%
- Short interest
- 5.7M ▲ +10% vs prior · as of 2026-06-30
- Short % of float
- 3.9%
- Days to cover
- 4.1d
- Avg daily volume
- 1.5M
- Next earnings
- Jul 29 · in 11d (before open)
- Sector
- Health Care
- Industry
- Biological Products, (No Diagnostic Substances)
- Exchange
- XNAS
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Why is $BIIB up today?
Here is the latest on BIIB from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for BIIB today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystResults of Operations, from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
Insiders buying9 buys, 1 sells last 3 months (10/20 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Freire Maria C Director | Acquired (grant/award) | +2K | added 29% | 9K | n/a | Jun 9, 26 |
Minor Lloyd Director | Acquired (grant/award) | +2K | added 64% | 4K | n/a | Jun 9, 26 |
Pangalos Menelas N Director | Acquired (grant/award) | +2K | added 64% | 4K | n/a | Jun 9, 26 |
Pangalos Menelas N Director | Other | 2K | n/a | 2K | n/a | Jun 9, 26 |
Patolawala Monish D Director | Acquired (grant/award) | +2K | added 41% | 5K | n/a | Jun 9, 26 |
Langer Susan Director | Acquired (grant/award) | +2K | added 29% | 7K | n/a | Jun 9, 26 |
Mantas Jesus B Director | Acquired (grant/award) | +2K | added 15% | 11K | n/a | Jun 9, 26 |
Rowinsky Eric K Director | Acquired (grant/award) | +2K | added 6.2% | 26K | n/a | Jun 9, 26 |
Sherwin Stephen A Director | Acquired (grant/award) | +2K | added 11% | 15K | n/a | Jun 9, 26 |
Hawkins William A Director | Acquired (grant/award) | +2K | added 17% | 10K | n/a | Jun 9, 26 |
Keeney Adam Officer | Sold (automatic/other) | -455 | sold 6.7% | 6K | $85K at $187.06 | May 1, 26 |
Keeney Adam Officer | Other | 939 | added 16% | 7K | n/a | May 1, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$BIIB Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$BIIB Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
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BIIB stock FAQ
Why is $BIIB up today?
Here is the latest on BIIB from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for BIIB today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the BIIB stock price today?
BIIB last traded at $210.74, up 0.87% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live BIIB alerts?
The BIIB Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged BIIB 36 times in the last 30 days.
What exchange is BIIB on?
BIIB (Biogen Inc. Common Stock) trades on XNAS, with a market cap of about $30.84B in the BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES) sector.
Is BIIB good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge BIIB for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.