Why is $BIIB stock up today?
Biogen Inc. Common Stock · BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
Why is $BIIB up today?
The likely driver
The numbers behind the move
Nothing has triggered on BIIB yet in this session. Our scanner has flagged it 83 times in the last 30 days , most recently on September 18 for big percentage moves, unusual volume, which is why this page is here. See the full BIIB page for the chart and the alert history.
Earlier scanner activity on BIIB
- Sep 18Unusual volume (RVOL) alert
- Sep 18Unusual volume (RVOL) alert
- Sep 17Unusual volume (RVOL) alert
- Sep 17Unusual volume (RVOL) alert
- Sep 16Unusual volume (RVOL) alert
- Sep 15Unusual volume (RVOL) alert
- Sep 15Unusual volume (RVOL) alert
- Sep 15Unusual volume (RVOL) alert
- Sep 15Unusual volume (RVOL) alert
- Sep 14Unusual volume (RVOL) alert
- Sep 14Unusual volume (RVOL) alert
- Sep 11Unusual volume (RVOL) alert
Prior sessions in the last 30 days. A name our scanner keeps flagging is behaving differently from the rest of the market, even on a quiet day.
Other stocks moving today
Each opens that stock’s own why-is-it-moving page.
Move and volume are based on the latest market data and refresh live on this page. Scanner alerts are our own real-time unusual-volume signals. This is research, not investment advice.