Altimmune Inc. (ALT)
Showing Closing Date Range from Apr 19 to Oct 16, 2026 compared to Oct 20, 2025 to Apr 18, 2026.
Compare Last 6 Months with Previous Period
Investor Relations:altimmune.com
Current Period Close
$2.20
Apr 19, 2026 - Oct 16, 2026
Previous Period Close
$3.50
Oct 20, 2025 - Apr 18, 2026
Net Comparison Delta
$-1.30 (-37.14%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(124 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 16, 2026 | $2.20 | Apr 17, 2026 | $3.50 | -37.14% |
| Oct 15, 2026 | $2.36 | Apr 16, 2026 | $3.51 | -32.76% |
| Oct 14, 2026 | $2.31 | Apr 15, 2026 | $3.40 | -32.06% |
| Oct 13, 2026 | $2.43 | Apr 14, 2026 | $3.29 | -26.14% |
| Oct 12, 2026 | $2.56 | Apr 13, 2026 | $3.23 | -20.74% |
| Oct 09, 2026 | $2.61 | Apr 10, 2026 | $3.24 | -19.44% |
| Oct 08, 2026 | $2.60 | Apr 09, 2026 | $3.38 | -23.08% |
| Oct 07, 2026 | $2.66 | Apr 08, 2026 | $3.37 | -21.07% |
| Oct 06, 2026 | $2.67 | Apr 07, 2026 | $3.38 | -21.01% |
| Oct 05, 2026 | $2.67 | Apr 06, 2026 | $3.33 | -19.82% |
| Oct 02, 2026 | $2.74 | Apr 02, 2026 | $3.34 | -18.11% |
| Oct 01, 2026 | $2.76 | Apr 01, 2026 | $3.12 | -11.54% |
| Sep 30, 2026 | $2.86 | Mar 31, 2026 | $3.08 | -7.14% |
| Sep 29, 2026 | $2.97 | Mar 30, 2026 | $2.88 | +3.13% |
| Sep 24, 2026 | $3.04 | Mar 27, 2026 | $3.02 | +0.66% |
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