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ALT
Altimmune, Inc. Common Stock
stockNASDAQ

At CloseOct 9, 2026 3:59:56 PM EDT
2.62USD+0.769%(+0.02)2,677,746
Pre-marketOct 9, 2026 9:27:30 AM EDT
2.58USD-0.769%(-0.02)
After-hoursOct 9, 2026 4:14:30 PM EDT
2.61USD-0.382%(-0.01)
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509.64M
Healthcare
Biotechnology
HQ
Gaithersburg, MD, USA
Previous Close
$2.60
Beta
1.57
52-Week High
$6.44 2026-01-23
52-Week Low
$2.55 2026-10-08
SMA 50
$3.06
SMA 200
$3.41
Avg. Vol 10D
4.09M
Avg. Vol 30D
3.93M
Avg. Vol 90D
4.29M
Relative Vol
0.68
194.52M
183.67M
46,079,911
0.2600%
1,300,000
217
Nov 5, 2026 (26d)
Feb 6, 2017 · $2.910
Sep 14, 2018 · 1-for-30 (reverse)
Sep 30, 2026
Sep 29, 2026
Sep 23, 2026
Sep 11, 2026
Why Is Altimmune (ALT) Up 14.2% Since Last Earnings Report? · Zacks Investment Research
ALT Profile

altimmune, inc. is a clinical stage biotechnology company developing next-generation immunotherapeutics and vaccines to address significant public health and biodefense needs. by leveraging specific attributes of its two independent and complementary platform technologies, altimmune can rapidly design product candidates against a wide range of disease targets, including respiratory diseases, chronic infections, and cancer. our densigen™ t-cell platform technology is uniquely suited to direct the immune response against traditionally difficult disease targets, including chronic infections and cancer, by directing an individual's immune system against multiple target antigens instead of just one. altimmune's respirvec™ platform utilizes convenient needle-free intranasal delivery to achieve broad immunity against disease pathogens more rapidly than conventional vaccines. vaxin's product candidates are easily manufactured, highly stable, and provide a safe, effective alternative to current

ALT Performance
PeriodPriceDateChangeBeta
1W2.742026-10-02-4.21%0.688
1M3.292026-09-10-20.36%1.314
3M3.052026-07-10-14.10%1.325
6M3.242026-04-10-19.14%1.461
1Y3.922025-10-10-33.16%1.575
2Y6.022024-10-10-56.48%—
5Y12.382021-10-11-78.84%1.332
ALT Stock Summary

Altimmune, Inc. Common Stock (NASDAQ:ALT) stock price today is $2.62, and today's volume is 2,677,746. ALT is up 0.769% today. The 30 day average volume is 3.93M. ALT market cap is $509.64M with 194.52M shares outstanding.