If you invested $1000 in Altimmune, Inc. (ALT) since IPO date, it would be worth $23.35 as of August 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $237.77, while $1000 invested 1 year ago would be worth $878.53. This corresponds to total returns of -97.67%, -76.22%, -12.15%, respectively, with annualized returns of -33.39%, -24.97%, -12.15%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| August 21, 2026 | 2.98 | 3.11 | 3.11 | 3.24 | 2.95 | 6.15M |
| August 20, 2026 | 3.07 | 2.95 | 2.95 | 3.08 | 2.92 | 4.68M |
| August 19, 2026 | 3.04 | 3.12 | 3.12 | 3.2 | 3.01 | 10.79M |
| August 18, 2026 | 2.99 | 2.97 | 2.97 | 3.03 | 2.96 | 2.43M |
| August 17, 2026 | 2.94 | 3 | 3 | 3.02 | 2.9 | 4.03M |
| August 14, 2026 | 2.95 | 2.94 | 2.94 | 2.97 | 2.86 | 2.99M |
| August 13, 2026 | 2.95 | 2.88 | 2.88 | 2.96 | 2.84 | 4.1M |
| August 12, 2026 | 3.05 | 2.93 | 2.93 | 3.2 | 2.92 | 6.02M |
| August 11, 2026 | 3.06 | 3 | 3 | 3.08 | 2.98 | 0 |
| August 10, 2026 | 3.09 | 3.05 | 3.05 | 3.1 | 2.99 | 5.26M |
| August 07, 2026 | 3.05 | 3.08 | 3.08 | 3.1 | 3 | 4.5M |
| August 06, 2026 | 3.03 | 3.01 | 3.01 | 3.05 | 2.95 | 3.97M |
| August 05, 2026 | 3.07 | 3.03 | 3.03 | 3.12 | 3.01 | 3.08M |
| August 04, 2026 | 3.01 | 3.07 | 3.07 | 3.08 | 2.95 | 8.16M |
| August 03, 2026 | 2.88 | 3 | 3 | 3.03 | 2.86 | 4.62M |
| July 31, 2026 | 2.99 | 2.84 | 2.84 | 2.99 | 2.78 | 3.88M |
| July 30, 2026 | 2.93 | 2.98 | 2.98 | 3.01 | 2.86 | 5.42M |
| July 29, 2026 | 3 | 2.92 | 2.92 | 3.1 | 2.9 | 8.29M |
| July 28, 2026 | 3.16 | 2.99 | 2.99 | 3.31 | 2.82 | 17.09M |
| July 27, 2026 | 2.8 | 2.96 | 2.96 | 3.03 | 2.8 | 4.06M |
| July 24, 2026 | 2.85 | 2.77 | 2.77 | 2.89 | 2.76 | 1.9M |
| July 23, 2026 | 2.79 | 2.84 | 2.84 | 2.84 | 2.75 | 1.63M |
| July 22, 2026 | 2.81 | 2.81 | 2.81 | 2.87 | 2.77 | 2.29M |
| July 21, 2026 | 2.81 | 2.82 | 2.82 | 2.87 | 2.78 | 1.98M |
| July 20, 2026 | 2.89 | 2.81 | 2.81 | 2.91 | 2.79 | 2.61M |
| July 17, 2026 | 2.79 | 2.87 | 2.87 | 2.95 | 2.77 | 2.96M |
| July 16, 2026 | 2.96 | 2.85 | 2.85 | 2.97 | 2.81 | 2.99M |
| July 15, 2026 | 2.94 | 2.98 | 2.98 | 3 | 2.89 | 2.83M |
| July 14, 2026 | 2.98 | 2.93 | 2.93 | 3.02 | 2.9 | 3.29M |
| July 13, 2026 | 3.01 | 2.99 | 2.99 | 3.02 | 2.92 | 2.45M |
| July 10, 2026 | 3.12 | 3.05 | 3.05 | 3.14 | 2.95 | 2.99M |
| July 09, 2026 | 3.11 | 3.12 | 3.12 | 3.15 | 3.04 | 2.87M |
| July 08, 2026 | 2.94 | 3.11 | 3.11 | 3.11 | 2.93 | 3.52M |
| July 07, 2026 | 3.08 | 3.02 | 3.02 | 3.12 | 2.96 | 4.62M |
| July 06, 2026 | 3.25 | 3.08 | 3.08 | 3.3 | 3.08 | 4.34M |
| July 02, 2026 | 3.18 | 3.16 | 3.16 | 3.26 | 3.1 | 4.04M |
| July 01, 2026 | 3.02 | 3.15 | 3.15 | 3.4 | 3 | 7.97M |
| June 30, 2026 | 2.95 | 3.04 | 3.04 | 3.14 | 2.91 | 4.33M |
| June 29, 2026 | 2.85 | 2.94 | 2.94 | 2.94 | 2.79 | 3.63M |
| June 26, 2026 | 2.85 | 2.82 | 2.82 | 2.9 | 2.74 | 17.1M |
| June 25, 2026 | 2.96 | 2.87 | 2.87 | 3 | 2.86 | 2.78M |
| June 24, 2026 | 2.92 | 2.95 | 2.95 | 3.04 | 2.92 | 3.48M |
| June 23, 2026 | 2.88 | 2.91 | 2.91 | 3.04 | 2.88 | 4.21M |
| June 22, 2026 | 2.84 | 2.93 | 2.93 | 3.05 | 2.83 | 5.77M |
| June 18, 2026 | 2.68 | 2.7 | 2.7 | 2.77 | 2.68 | 11.68M |
| June 17, 2026 | 2.65 | 2.64 | 2.64 | 2.71 | 2.62 | 3.57M |
| June 16, 2026 | 2.64 | 2.62 | 2.62 | 2.68 | 2.6 | 2.91M |
| June 15, 2026 | 2.62 | 2.64 | 2.64 | 2.68 | 2.58 | 3.51M |
| June 12, 2026 | 2.61 | 2.61 | 2.61 | 2.66 | 2.58 | 2.14M |
| June 11, 2026 | 2.62 | 2.59 | 2.59 | 2.65 | 2.57 | 3.42M |
| June 10, 2026 | 2.62 | 2.61 | 2.61 | 2.71 | 2.61 | 3.03M |
| June 09, 2026 | 2.77 | 2.66 | 2.66 | 2.8 | 2.62 | 3.34M |
| June 08, 2026 | 2.75 | 2.73 | 2.73 | 2.78 | 2.68 | 2.17M |
| June 05, 2026 | 2.91 | 2.71 | 2.71 | 2.92 | 2.69 | 0 |
| June 04, 2026 | 2.84 | 2.92 | 2.92 | 3 | 2.84 | 2.81M |
| June 03, 2026 | 2.93 | 2.87 | 2.87 | 2.95 | 2.84 | 3.02M |
| June 02, 2026 | 2.99 | 2.9 | 2.9 | 3 | 2.9 | 3.1M |
| June 01, 2026 | 3.02 | 3.01 | 3.01 | 3.05 | 2.93 | 2.26M |
| May 29, 2026 | 3.07 | 3.05 | 3.05 | 3.1 | 3.02 | 2.59M |
| May 28, 2026 | 2.98 | 3.07 | 3.07 | 3.13 | 2.98 | 3.91M |