Why is $ALT stock down today?
Altimmune, Inc. Common Stock
Why is $ALT down today?
The likely driver
Altimmune, Inc.: Q2 FY2026 results, three months to Jun 30, 2025
Altimmune, Inc.: Q2 FY2026 results, three months to Jun 30, 2025
SEC filing · Aug 12
The numbers behind the move
Short interest
145.8% of float
Days to cover
11.8d
Float
34.1M · High
Float rotation
0.1x
Dilution
Heavy
Insider buying
6 open-market
ALT: 145.8% of the float is sold short (11.8 days to cover), active share dilution on file, 6 open-market insider buys.
Price
$3.25
Move today
-0.6%
Volume vs avg
0.0x
Scanner alerts today
0
Flagged in 30 days
185
Market cap
$652M
Prev close
$3.27
Avg volume
4.6M
Nothing has triggered on ALT yet in this session. Our scanner has flagged it 185 times in the last 30 days , most recently on September 11 for big percentage moves, unusual volume, which is why this page is here. See the full ALT page for the chart and the alert history.
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.