ALT5 Sigma Corporation (ALTS)
NASDAQ: ALTS · Real-Time Price · USD
2.630
-0.060 (-2.23%)
At close: Oct 1, 2025, 4:00 PM EDT
2.650
+0.020 (0.76%)
After-hours: Oct 1, 2025, 6:08 PM EDT
ALT5 Sigma Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | 2.72 | 2.77 | 2.48 | 2.63 | 2.63 | -2.23% | 7,429,139 |
| Sep 30, 2025 | 2.76 | 2.76 | 2.55 | 2.69 | 2.69 | -4.61% | 7,649,973 |
| Sep 29, 2025 | 3.13 | 3.18 | 2.76 | 2.82 | 2.82 | -9.03% | 9,265,018 |
| Sep 26, 2025 | 3.07 | 3.15 | 2.87 | 3.10 | 3.10 | 1.31% | 9,901,020 |
| Sep 25, 2025 | 3.26 | 3.28 | 3.05 | 3.06 | 3.06 | -10.53% | 7,961,266 |
| Sep 24, 2025 | 3.79 | 3.83 | 3.41 | 3.42 | 3.42 | -9.28% | 8,268,932 |
| Sep 23, 2025 | 3.76 | 4.00 | 3.75 | 3.77 | 3.77 | - | 7,256,110 |
| Sep 22, 2025 | 3.90 | 3.91 | 3.68 | 3.77 | 3.77 | -3.33% | 5,144,360 |
| Sep 19, 2025 | 3.80 | 4.22 | 3.77 | 3.90 | 3.90 | 5.98% | 17,855,282 |
| Sep 18, 2025 | 3.79 | 3.90 | 3.62 | 3.68 | 3.68 | -0.27% | 5,947,543 |
| Sep 17, 2025 | 3.73 | 3.90 | 3.57 | 3.69 | 3.69 | - | 6,997,755 |
| Sep 16, 2025 | 3.96 | 3.97 | 3.68 | 3.69 | 3.69 | -5.87% | 6,278,982 |
| Sep 15, 2025 | 4.11 | 4.16 | 3.86 | 3.92 | 3.92 | -6.22% | 7,843,712 |
| Sep 12, 2025 | 4.01 | 4.22 | 3.90 | 4.18 | 4.18 | 5.29% | 6,529,631 |
| Sep 11, 2025 | 3.95 | 4.12 | 3.80 | 3.97 | 3.97 | 1.15% | 8,736,007 |
| Sep 10, 2025 | 3.99 | 4.27 | 3.85 | 3.93 | 3.93 | -2.12% | 8,857,578 |
| Sep 9, 2025 | 4.13 | 4.38 | 3.36 | 4.01 | 4.01 | -2.91% | 13,340,240 |
| Sep 8, 2025 | 4.61 | 4.61 | 3.97 | 4.13 | 4.13 | -6.03% | 14,280,064 |
| Sep 5, 2025 | 3.92 | 4.41 | 3.78 | 4.40 | 4.40 | 13.57% | 18,986,613 |
| Sep 4, 2025 | 3.96 | 4.21 | 3.55 | 3.87 | 3.87 | -13.81% | 27,746,124 |
| Sep 3, 2025 | 5.57 | 5.57 | 4.45 | 4.49 | 4.49 | -19.53% | 24,934,610 |
| Sep 2, 2025 | 6.62 | 6.68 | 5.48 | 5.58 | 5.58 | -29.19% | 33,885,744 |
| Aug 29, 2025 | 8.32 | 8.74 | 7.52 | 7.88 | 7.88 | -5.63% | 19,508,182 |
| Aug 28, 2025 | 7.18 | 8.43 | 7.02 | 8.35 | 8.35 | 21.90% | 21,237,185 |
| Aug 27, 2025 | 7.20 | 7.73 | 6.81 | 6.85 | 6.85 | -4.20% | 12,456,830 |
| Aug 26, 2025 | 7.00 | 7.23 | 6.71 | 7.15 | 7.15 | 5.15% | 10,928,450 |
| Aug 25, 2025 | 6.43 | 7.33 | 6.37 | 6.80 | 6.80 | 3.50% | 18,255,282 |
| Aug 22, 2025 | 5.55 | 6.69 | 5.50 | 6.57 | 6.57 | 19.13% | 15,775,203 |
| Aug 21, 2025 | 5.76 | 5.90 | 5.50 | 5.52 | 5.52 | -6.37% | 6,178,629 |
| Aug 20, 2025 | 5.56 | 5.95 | 5.20 | 5.89 | 5.89 | 7.48% | 9,830,730 |
| Aug 19, 2025 | 6.52 | 6.55 | 5.25 | 5.48 | 5.48 | -10.46% | 15,736,347 |
| Aug 18, 2025 | 6.21 | 6.36 | 5.87 | 6.12 | 6.12 | 3.03% | 10,048,616 |
| Aug 15, 2025 | 7.31 | 7.31 | 5.86 | 5.94 | 5.94 | -17.61% | 14,320,574 |
| Aug 14, 2025 | 7.35 | 7.58 | 7.03 | 7.21 | 7.21 | 3.59% | 16,542,216 |
| Aug 13, 2025 | 6.65 | 7.04 | 6.10 | 6.96 | 6.96 | 16.78% | 22,003,261 |
| Aug 12, 2025 | 7.04 | 7.20 | 5.12 | 5.96 | 5.96 | -9.70% | 29,796,067 |
| Aug 11, 2025 | 8.42 | 9.76 | 6.02 | 6.60 | 6.60 | -26.42% | 57,959,962 |
| Aug 8, 2025 | 8.18 | 9.04 | 8.05 | 8.97 | 8.97 | 9.66% | 575,567 |
| Aug 7, 2025 | 6.79 | 8.20 | 6.64 | 8.18 | 8.18 | 20.83% | 570,021 |
| Aug 6, 2025 | 6.68 | 6.84 | 6.36 | 6.77 | 6.77 | 0.59% | 98,022 |
| Aug 5, 2025 | 6.79 | 6.95 | 6.59 | 6.73 | 6.73 | -1.17% | 131,132 |
| Aug 4, 2025 | 6.30 | 6.83 | 6.30 | 6.81 | 6.81 | 8.44% | 142,867 |
| Aug 1, 2025 | 6.17 | 6.39 | 6.00 | 6.28 | 6.28 | 1.29% | 126,264 |
| Jul 31, 2025 | 6.25 | 6.68 | 6.16 | 6.20 | 6.20 | -0.48% | 172,720 |
| Jul 30, 2025 | 6.14 | 6.58 | 6.08 | 6.23 | 6.23 | 3.23% | 257,612 |
| Jul 29, 2025 | 6.91 | 6.99 | 5.98 | 6.04 | 6.04 | -13.54% | 375,235 |
| Jul 28, 2025 | 7.13 | 7.30 | 6.85 | 6.98 | 6.98 | -1.41% | 234,664 |
| Jul 25, 2025 | 7.10 | 7.35 | 6.91 | 7.08 | 7.08 | -0.28% | 268,125 |
| Jul 24, 2025 | 7.32 | 7.60 | 6.95 | 7.10 | 7.10 | -2.61% | 258,942 |
| Jul 23, 2025 | 7.32 | 7.46 | 6.97 | 7.29 | 7.29 | 0.97% | 200,267 |