Altimmune, Inc. ALT
1.65 USD +0.03 (+2.17%)
Regular-session close
1.67 +0.02 +1.52%
After hours · Nov 13, 7:37 PM ET
1.58 Day range 1.67
1.61 52-week range 6.18
- YTD
- -54.43%
- 1 year
- -59.48%
ALT price history
| Date | Open | High | Low | Close | Change | Change % | Volume |
|---|---|---|---|---|---|---|---|
| Nov 13, 2026 | 1.64 | 1.67 | 1.58 | 1.64 | +0.03 | +1.86% | 3,476,790 |
| Nov 12, 2026 | 1.90 | 1.90 | 1.60 | 1.61 | -0.32 | -16.58% | 12,434,400 |
| Nov 11, 2026 | 1.95 | 1.99 | 1.90 | 1.93 | -0.01 | -0.52% | 2,939,800 |
| Nov 10, 2026 | 2.12 | 2.13 | 1.90 | 1.94 | -0.18 | -8.49% | 3,988,800 |
| Nov 9, 2026 | 2.09 | 2.21 | 2.05 | 2.12 | +0.04 | +1.92% | 4,365,000 |
| Nov 6, 2026 | 1.97 | 2.10 | 1.95 | 2.08 | +0.11 | +5.58% | 2,773,900 |
| Nov 5, 2026 | 2.12 | 2.13 | 1.91 | 1.97 | -0.15 | -7.08% | 4,205,700 |
| Nov 4, 2026 | 2.10 | 2.15 | 2.02 | 2.12 | +0.08 | +3.92% | 3,476,700 |
| Nov 3, 2026 | 2.03 | 2.08 | 2.03 | 2.04 | +0.02 | +0.99% | 2,397,800 |
| Nov 2, 2026 | 2.07 | 2.11 | 2.01 | 2.02 | -0.02 | -0.98% | 2,739,300 |
| Oct 30, 2026 | 2.13 | 2.13 | 1.99 | 2.04 | -0.10 | -4.67% | 3,516,800 |
| Oct 29, 2026 | 2.11 | 2.18 | 2.10 | 2.14 | +0.04 | +1.90% | 2,684,200 |
| Oct 28, 2026 | 2.03 | 2.10 | 2.00 | 2.10 | +0.06 | +2.94% | 4,324,400 |
| Oct 27, 2026 | 2.07 | 2.15 | 2.01 | 2.04 | -0.01 | -0.49% | 4,963,200 |
| Oct 26, 2026 | 2.13 | 2.15 | 2.02 | 2.05 | -0.07 | -3.30% | 3,498,600 |
| Oct 23, 2026 | 2.16 | 2.20 | 2.06 | 2.12 | -0.05 | -2.30% | 2,599,400 |
| Oct 22, 2026 | 2.20 | 2.24 | 2.15 | 2.17 | -0.06 | -2.69% | 3,089,600 |
| Oct 21, 2026 | 2.31 | 2.35 | 2.19 | 2.23 | -0.07 | -3.04% | 4,501,800 |
| Oct 20, 2026 | 2.22 | 2.32 | 2.20 | 2.30 | +0.07 | +3.14% | 2,305,600 |
| Oct 19, 2026 | 2.22 | 2.26 | 2.18 | 2.23 | +0.03 | +1.36% | 2,611,300 |
| Oct 16, 2026 | 2.37 | 2.37 | 2.17 | 2.20 | -0.16 | -6.78% | 4,240,400 |
| Oct 15, 2026 | 2.31 | 2.38 | 2.29 | 2.36 | +0.05 | +2.16% | 3,344,400 |
| Oct 14, 2026 | 2.40 | 2.41 | 2.29 | 2.31 | -0.12 | -4.94% | 5,623,700 |
| Oct 13, 2026 | 2.56 | 2.56 | 2.43 | 2.43 | -0.13 | -5.08% | 3,713,400 |
| Oct 12, 2026 | 2.59 | 2.63 | 2.56 | 2.56 | -0.05 | -1.92% | 2,158,700 |
| Oct 9, 2026 | 2.60 | 2.64 | 2.57 | 2.61 | +0.01 | +0.38% | 2,677,700 |
| Oct 8, 2026 | 2.66 | 2.66 | 2.55 | 2.60 | -0.06 | -2.26% | 4,929,500 |
| Oct 7, 2026 | 2.64 | 2.74 | 2.63 | 2.66 | -0.01 | -0.37% | 3,168,200 |
| Oct 6, 2026 | 2.70 | 2.70 | 2.64 | 2.67 | 0.00 | 0.00% | 7,623,300 |
| Oct 5, 2026 | 2.73 | 2.75 | 2.65 | 2.67 | -0.06 | -2.20% | 3,839,500 |
| Oct 2, 2026 | 2.80 | 2.81 | 2.71 | 2.73 | -0.03 | -1.09% | 4,243,900 |
| Oct 1, 2026 | 2.85 | 2.85 | 2.75 | 2.76 | -0.10 | -3.50% | 3,589,100 |
| Sep 30, 2026 | 2.99 | 2.99 | 2.86 | 2.86 | -0.11 | -3.70% | 4,922,500 |
| Sep 29, 2026 | 2.99 | 3.01 | 2.92 | 2.97 | +0.01 | +0.34% | 2,561,000 |
| Sep 28, 2026 | 3.04 | 3.07 | 2.95 | 2.96 | -0.10 | -3.27% | 3,357,500 |
| Sep 25, 2026 | 3.05 | 3.11 | 3.00 | 3.06 | +0.02 | +0.66% | 2,858,800 |
| Sep 24, 2026 | 3.18 | 3.20 | 2.98 | 3.04 | -0.15 | -4.70% | 3,685,800 |
| Sep 23, 2026 | 3.42 | 3.42 | 3.15 | 3.19 | -0.22 | -6.45% | 4,531,500 |
| Sep 22, 2026 | 3.33 | 3.41 | 3.25 | 3.41 | +0.14 | +4.28% | 4,003,300 |
| Sep 21, 2026 | 3.31 | 3.34 | 3.24 | 3.27 | +0.02 | +0.62% | 3,516,200 |
| Sep 18, 2026 | 3.23 | 3.26 | 3.18 | 3.25 | +0.01 | +0.31% | 12,175,800 |
| Sep 17, 2026 | 3.31 | 3.35 | 3.21 | 3.24 | 0.00 | 0.00% | 3,456,600 |
| Sep 16, 2026 | 3.27 | 3.29 | 3.19 | 3.24 | +0.01 | +0.31% | 3,328,800 |
| Sep 15, 2026 | 3.30 | 3.31 | 3.21 | 3.23 | -0.07 | -2.12% | 2,334,500 |
| Sep 14, 2026 | 3.27 | 3.36 | 3.27 | 3.30 | +0.03 | +0.92% | 2,460,900 |
| Sep 11, 2026 | 3.33 | 3.41 | 3.26 | 3.27 | -0.02 | -0.61% | 2,704,700 |
| Sep 10, 2026 | 3.32 | 3.35 | 3.25 | 3.29 | -0.06 | -1.79% | 2,563,000 |
| Sep 9, 2026 | 3.35 | 3.42 | 3.29 | 3.35 | -0.01 | -0.30% | 3,069,900 |
| Sep 8, 2026 | 3.46 | 3.55 | 3.34 | 3.36 | -0.06 | -1.75% | 3,588,400 |
| Sep 4, 2026 | 3.28 | 3.43 | 3.25 | 3.42 | +0.19 | +5.88% | 4,867,100 |
| Sep 3, 2026 | 3.30 | 3.32 | 3.19 | 3.23 | -0.05 | -1.52% | 2,550,400 |
| Sep 2, 2026 | 3.10 | 3.34 | 3.10 | 3.28 | +0.19 | +6.15% | 7,470,000 |
| Sep 1, 2026 | 3.07 | 3.10 | 3.02 | 3.09 | -0.02 | -0.64% | 2,355,200 |
| Aug 31, 2026 | 3.08 | 3.13 | 3.06 | 3.11 | 0.00 | 0.00% | 2,216,400 |
| Aug 28, 2026 | 3.21 | 3.23 | 3.06 | 3.11 | -0.13 | -4.01% | 3,188,500 |
| Aug 27, 2026 | 3.19 | 3.25 | 3.13 | 3.24 | +0.09 | +2.86% | 2,276,800 |
| Aug 26, 2026 | 3.20 | 3.20 | 3.09 | 3.15 | -0.05 | -1.56% | 4,046,200 |
| Aug 25, 2026 | 3.14 | 3.22 | 3.11 | 3.20 | +0.09 | +2.89% | 3,814,600 |
| Aug 24, 2026 | 3.13 | 3.13 | 3.03 | 3.11 | 0.00 | 0.00% | 2,715,900 |
| Aug 21, 2026 | 2.98 | 3.24 | 2.95 | 3.11 | +0.16 | +5.42% | 6,148,000 |
| Aug 20, 2026 | 3.07 | 3.08 | 2.92 | 2.95 | -0.17 | -5.45% | 4,681,400 |
| Aug 19, 2026 | 3.04 | 3.20 | 3.01 | 3.12 | +0.15 | +5.05% | 10,824,100 |
| Aug 18, 2026 | 2.99 | 3.03 | 2.96 | 2.97 | -0.03 | -1.00% | 2,472,100 |
| Aug 17, 2026 | 2.94 | 3.02 | 2.90 | 3.00 | +0.06 | +2.04% | 4,056,900 |
| Aug 14, 2026 | 2.95 | 2.97 | 2.86 | 2.94 | +0.06 | +2.08% | 3,074,000 |
65 days, newest first. Daily bars as drawn on the ALT chart; change is against the previous day's close. Open, high, low and volume are in the download and on a wider screen.