ALT5 Sigma Corporation (ALTS)
NASDAQ: ALTS · Real-Time Price · USD
0.855
+0.005 (0.59%)
At close: Apr 28, 2026, 4:00 PM EDT
0.855
0.00 (0.00%)
After-hours: Apr 28, 2026, 4:26 PM EDT
ALT5 Sigma Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 28, 2026 | 0.84 | 0.87 | 0.84 | 0.85 | - | -0.35% | 794,044 |
| Apr 27, 2026 | 0.88 | 0.89 | 0.83 | 0.85 | 0.85 | -1.69% | 1,636,274 |
| Apr 24, 2026 | 0.87 | 0.89 | 0.82 | 0.86 | 0.86 | 1.06% | 2,273,164 |
| Apr 23, 2026 | 0.95 | 0.95 | 0.85 | 0.86 | 0.86 | -7.61% | 2,773,159 |
| Apr 22, 2026 | 0.89 | 0.98 | 0.88 | 0.93 | 0.93 | 7.61% | 4,271,779 |
| Apr 21, 2026 | 0.94 | 0.98 | 0.86 | 0.86 | 0.86 | -7.04% | 3,235,762 |
| Apr 20, 2026 | 0.92 | 0.97 | 0.90 | 0.93 | 0.93 | -5.53% | 3,140,050 |
| Apr 17, 2026 | 0.96 | 1.13 | 0.96 | 0.98 | 0.98 | 2.43% | 4,908,577 |
| Apr 16, 2026 | 1.02 | 1.03 | 0.95 | 0.96 | 0.96 | -3.56% | 1,522,136 |
| Apr 15, 2026 | 0.91 | 1.02 | 0.91 | 0.99 | 0.99 | 11.46% | 3,512,438 |
| Apr 14, 2026 | 0.94 | 0.98 | 0.87 | 0.89 | 0.89 | -2.92% | 4,761,188 |
| Apr 13, 2026 | 0.98 | 0.98 | 0.88 | 0.92 | 0.92 | -2.47% | 5,604,453 |
| Apr 10, 2026 | 1.09 | 1.11 | 0.94 | 0.94 | 0.94 | -12.96% | 8,397,845 |
| Apr 9, 2026 | 1.09 | 1.13 | 1.08 | 1.08 | 1.08 | -1.82% | 1,376,153 |
| Apr 8, 2026 | 1.20 | 1.23 | 1.10 | 1.10 | 1.10 | - | 1,744,169 |
| Apr 7, 2026 | 1.14 | 1.17 | 1.10 | 1.10 | 1.10 | -5.17% | 1,085,446 |
| Apr 6, 2026 | 1.17 | 1.23 | 1.15 | 1.16 | 1.16 | 1.75% | 1,236,970 |
| Apr 2, 2026 | 1.08 | 1.20 | 1.06 | 1.14 | 1.14 | 3.64% | 4,155,634 |
| Apr 1, 2026 | 1.13 | 1.18 | 1.10 | 1.10 | 1.10 | -0.90% | 1,555,876 |
| Mar 31, 2026 | 1.12 | 1.15 | 1.08 | 1.11 | 1.11 | -0.89% | 2,273,394 |
| Mar 30, 2026 | 1.23 | 1.24 | 1.00 | 1.12 | 1.12 | -8.94% | 5,371,070 |
| Mar 27, 2026 | 1.28 | 1.30 | 1.23 | 1.23 | 1.23 | -6.82% | 1,590,050 |
| Mar 26, 2026 | 1.32 | 1.36 | 1.29 | 1.32 | 1.32 | -2.22% | 1,145,299 |
| Mar 25, 2026 | 1.33 | 1.40 | 1.33 | 1.35 | 1.35 | 3.05% | 823,438 |
| Mar 24, 2026 | 1.33 | 1.36 | 1.29 | 1.31 | 1.31 | -0.76% | 1,448,578 |
| Mar 23, 2026 | 1.39 | 1.46 | 1.32 | 1.32 | 1.32 | -2.94% | 1,970,577 |
| Mar 20, 2026 | 1.42 | 1.44 | 1.36 | 1.36 | 1.36 | -4.90% | 2,716,220 |
| Mar 19, 2026 | 1.33 | 1.49 | 1.33 | 1.43 | 1.43 | 4.38% | 2,174,643 |
| Mar 18, 2026 | 1.40 | 1.45 | 1.37 | 1.37 | 1.37 | -3.52% | 1,450,390 |
| Mar 17, 2026 | 1.35 | 1.47 | 1.35 | 1.42 | 1.42 | 3.65% | 1,476,724 |
| Mar 16, 2026 | 1.37 | 1.44 | 1.35 | 1.37 | 1.37 | 3.01% | 1,418,886 |
| Mar 13, 2026 | 1.40 | 1.47 | 1.31 | 1.33 | 1.33 | -2.21% | 1,587,314 |
| Mar 12, 2026 | 1.36 | 1.39 | 1.31 | 1.36 | 1.36 | -1.45% | 955,786 |
| Mar 11, 2026 | 1.41 | 1.47 | 1.35 | 1.38 | 1.38 | -1.43% | 988,870 |
| Mar 10, 2026 | 1.42 | 1.45 | 1.39 | 1.40 | 1.40 | -1.41% | 1,483,294 |
| Mar 9, 2026 | 1.37 | 1.44 | 1.35 | 1.42 | 1.42 | 2.90% | 1,723,826 |
| Mar 6, 2026 | 1.38 | 1.44 | 1.35 | 1.38 | 1.38 | -3.50% | 1,702,774 |
| Mar 5, 2026 | 1.50 | 1.56 | 1.42 | 1.43 | 1.43 | -7.14% | 2,182,358 |
| Mar 4, 2026 | 1.54 | 1.61 | 1.47 | 1.54 | 1.54 | 5.48% | 3,084,180 |
| Mar 3, 2026 | 1.44 | 1.52 | 1.40 | 1.46 | 1.46 | -6.41% | 4,667,984 |
| Mar 2, 2026 | 1.31 | 1.59 | 1.30 | 1.56 | 1.56 | 12.23% | 3,966,479 |
| Feb 27, 2026 | 1.39 | 1.42 | 1.34 | 1.39 | 1.39 | -2.11% | 1,972,498 |
| Feb 26, 2026 | 1.55 | 1.55 | 1.39 | 1.42 | 1.42 | -5.96% | 2,260,473 |
| Feb 25, 2026 | 1.27 | 1.59 | 1.25 | 1.51 | 1.51 | 23.77% | 6,416,784 |
| Feb 24, 2026 | 1.29 | 1.30 | 1.21 | 1.22 | 1.22 | -6.87% | 2,939,820 |
| Feb 23, 2026 | 1.41 | 1.43 | 1.30 | 1.31 | 1.31 | -9.03% | 2,173,968 |
| Feb 20, 2026 | 1.51 | 1.54 | 1.43 | 1.44 | 1.44 | -5.26% | 1,811,363 |
| Feb 19, 2026 | 1.46 | 1.54 | 1.43 | 1.52 | 1.52 | 1.33% | 1,633,675 |
| Feb 18, 2026 | 1.50 | 1.59 | 1.47 | 1.50 | 1.50 | 4.90% | 3,119,482 |
| Feb 17, 2026 | 1.47 | 1.51 | 1.38 | 1.43 | 1.43 | -4.03% | 2,029,791 |
| Feb 13, 2026 | 1.42 | 1.55 | 1.40 | 1.49 | 1.49 | 4.93% | 3,307,128 |
| Feb 12, 2026 | 1.50 | 1.50 | 1.37 | 1.42 | 1.42 | -4.70% | 1,516,283 |
| Feb 11, 2026 | 1.66 | 1.67 | 1.47 | 1.49 | 1.49 | -10.24% | 2,749,115 |
| Feb 10, 2026 | 1.76 | 1.77 | 1.64 | 1.66 | 1.66 | -6.21% | 2,354,475 |
| Feb 9, 2026 | 1.67 | 1.84 | 1.60 | 1.77 | 1.77 | 4.12% | 5,302,052 |
| Feb 6, 2026 | 1.57 | 1.75 | 1.57 | 1.70 | 1.70 | 10.39% | 3,593,374 |
| Feb 5, 2026 | 1.63 | 1.67 | 1.50 | 1.54 | 1.54 | -10.47% | 4,172,512 |
| Feb 4, 2026 | 1.98 | 2.02 | 1.70 | 1.72 | 1.72 | -18.10% | 6,313,079 |
| Feb 3, 2026 | 1.95 | 2.13 | 1.90 | 2.10 | 2.10 | 6.87% | 3,729,569 |
| Feb 2, 2026 | 2.00 | 2.05 | 1.89 | 1.97 | 1.97 | -6.43% | 3,572,531 |
| Jan 30, 2026 | 2.12 | 2.21 | 2.05 | 2.10 | 2.10 | -2.33% | 3,140,147 |
| Jan 29, 2026 | 2.32 | 2.58 | 2.10 | 2.15 | 2.15 | 1.42% | 6,538,398 |
| Jan 28, 2026 | 2.22 | 2.25 | 2.08 | 2.12 | 2.12 | -3.20% | 2,366,685 |
| Jan 27, 2026 | 2.05 | 2.21 | 2.00 | 2.19 | 2.19 | 10.05% | 3,028,422 |
| Jan 26, 2026 | 2.13 | 2.17 | 1.98 | 1.99 | 1.99 | -9.13% | 3,442,541 |
| Jan 23, 2026 | 2.30 | 2.32 | 2.05 | 2.19 | 2.19 | -4.78% | 4,198,386 |
| Jan 22, 2026 | 2.50 | 2.54 | 2.21 | 2.30 | 2.30 | -6.50% | 4,251,083 |
| Jan 21, 2026 | 2.55 | 2.70 | 2.31 | 2.46 | 2.46 | -1.20% | 5,700,942 |
| Jan 20, 2026 | 2.37 | 2.74 | 2.30 | 2.49 | 2.49 | -3.86% | 7,671,891 |
| Jan 16, 2026 | 2.47 | 2.64 | 2.36 | 2.59 | 2.59 | 7.02% | 5,984,727 |
| Jan 15, 2026 | 2.36 | 2.50 | 2.24 | 2.42 | 2.42 | 2.11% | 6,883,940 |
| Jan 14, 2026 | 2.16 | 2.40 | 2.05 | 2.37 | 2.37 | 30.94% | 22,005,977 |
| Jan 13, 2026 | 1.65 | 1.86 | 1.60 | 1.81 | 1.81 | 12.42% | 5,913,441 |
| Jan 12, 2026 | 1.60 | 1.65 | 1.55 | 1.61 | 1.61 | - | 2,187,862 |
| Jan 9, 2026 | 1.64 | 1.68 | 1.54 | 1.61 | 1.61 | -4.17% | 2,990,351 |
| Jan 8, 2026 | 1.48 | 1.70 | 1.48 | 1.68 | 1.68 | 15.07% | 5,863,273 |
| Jan 7, 2026 | 1.53 | 1.54 | 1.42 | 1.46 | 1.46 | -5.19% | 2,619,910 |
| Jan 6, 2026 | 1.53 | 1.62 | 1.45 | 1.54 | 1.54 | 1.99% | 5,884,844 |
| Jan 5, 2026 | 1.31 | 1.55 | 1.29 | 1.51 | 1.51 | 24.79% | 8,258,075 |
| Jan 2, 2026 | 1.13 | 1.22 | 1.12 | 1.21 | 1.21 | 10.00% | 3,884,665 |
| Dec 31, 2025 | 1.10 | 1.17 | 1.08 | 1.10 | 1.10 | -1.79% | 2,974,118 |
| Dec 30, 2025 | 1.17 | 1.21 | 1.09 | 1.12 | 1.12 | -5.08% | 5,484,298 |
| Dec 29, 2025 | 1.16 | 1.26 | 1.16 | 1.18 | 1.18 | - | 2,979,943 |
| Dec 26, 2025 | 1.18 | 1.21 | 1.14 | 1.18 | 1.18 | - | 1,909,739 |
| Dec 24, 2025 | 1.12 | 1.22 | 1.10 | 1.18 | 1.18 | 1.72% | 2,017,336 |
| Dec 23, 2025 | 1.20 | 1.20 | 1.14 | 1.16 | 1.16 | -5.69% | 5,425,023 |
| Dec 22, 2025 | 1.33 | 1.37 | 1.20 | 1.23 | 1.23 | -6.11% | 5,567,949 |
| Dec 19, 2025 | 1.35 | 1.38 | 1.29 | 1.31 | 1.31 | -1.50% | 4,598,756 |
| Dec 18, 2025 | 1.29 | 1.42 | 1.27 | 1.33 | 1.33 | 7.26% | 5,919,602 |
| Dec 17, 2025 | 1.33 | 1.35 | 1.22 | 1.24 | 1.24 | -6.77% | 3,629,733 |
| Dec 16, 2025 | 1.33 | 1.40 | 1.23 | 1.33 | 1.33 | -1.85% | 3,386,601 |
| Dec 15, 2025 | 1.47 | 1.47 | 1.30 | 1.36 | 1.36 | -8.45% | 3,223,161 |
| Dec 12, 2025 | 1.52 | 1.62 | 1.47 | 1.48 | 1.48 | -2.63% | 2,350,983 |
| Dec 11, 2025 | 1.48 | 1.55 | 1.43 | 1.52 | 1.52 | 0.66% | 1,802,253 |
| Dec 10, 2025 | 1.47 | 1.55 | 1.35 | 1.51 | 1.51 | 0.67% | 3,885,642 |
| Dec 9, 2025 | 1.38 | 1.60 | 1.37 | 1.50 | 1.50 | 7.91% | 4,952,138 |
| Dec 8, 2025 | 1.42 | 1.45 | 1.37 | 1.39 | 1.39 | -2.80% | 2,889,110 |
| Dec 5, 2025 | 1.55 | 1.56 | 1.42 | 1.43 | 1.43 | -9.49% | 3,033,661 |
| Dec 4, 2025 | 1.62 | 1.63 | 1.57 | 1.58 | 1.58 | -3.66% | 2,293,860 |
| Dec 3, 2025 | 1.55 | 1.64 | 1.49 | 1.64 | 1.64 | 5.13% | 4,145,868 |