Altimmune Inc. (ALT)
Showing Closing Date Range from Oct 16, 2025 to Oct 16, 2026 compared to Oct 15, 2024 to Oct 15, 2025.
Compare Last 12 Months with Previous Period
Investor Relations:altimmune.com
Current Period Close
$2.20
Oct 16, 2025 - Oct 16, 2026
Previous Period Close
$4.00
Oct 15, 2024 - Oct 15, 2025
Net Comparison Delta
$-1.80 (-45.00%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(250 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 16, 2026 | $2.20 | Oct 14, 2025 | $3.97 | -44.58% |
| Oct 15, 2026 | $2.36 | Oct 13, 2025 | $4.00 | -41.00% |
| Oct 14, 2026 | $2.31 | Oct 10, 2025 | $3.92 | -41.07% |
| Oct 13, 2026 | $2.43 | Oct 09, 2025 | $4.00 | -39.25% |
| Oct 12, 2026 | $2.56 | Oct 08, 2025 | $3.93 | -34.86% |
| Oct 09, 2026 | $2.61 | Oct 07, 2025 | $3.93 | -33.59% |
| Oct 08, 2026 | $2.60 | Oct 06, 2025 | $4.01 | -35.16% |
| Oct 07, 2026 | $2.66 | Oct 03, 2025 | $3.91 | -31.97% |
| Oct 06, 2026 | $2.67 | Oct 02, 2025 | $3.93 | -32.06% |
| Oct 05, 2026 | $2.67 | Oct 01, 2025 | $3.87 | -31.01% |
| Oct 02, 2026 | $2.74 | Sep 30, 2025 | $3.77 | -27.45% |
| Oct 01, 2026 | $2.76 | Sep 29, 2025 | $3.79 | -27.18% |
| Sep 30, 2026 | $2.86 | Sep 26, 2025 | $4.00 | -28.50% |
| Sep 29, 2026 | $2.97 | Sep 25, 2025 | $3.92 | -24.23% |
| Sep 24, 2026 | $3.04 | Sep 24, 2025 | $3.92 | -22.45% |
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