Why is $ALT stock moving today?
Altimmune, Inc. Common Stock · Pharmaceutical Preparations
Why is $ALT moving 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
0.4x
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
+0.0%
Volume vs avg
0.0x
Scanner alerts today
0
Flagged in 30 days
181
Market cap
$630M
Prev close
$3.25
Avg volume
4.5M
Nothing has triggered on ALT yet in this session. Our scanner has flagged it 181 times in the last 30 days , most recently on September 17 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.