ALT5 Sigma Corporation Common | ALTS | Nasdaq | Latest report: February 27, 2026
The latest reported short interest for ALT5 Sigma Corporation Common (ALTS) was 15,996,528 shares as of February 27, 2026. In the prior report, the figure was 16,245,323 shares. That put the latest change at -248.8K shares, or -1.5%, with days to cover at 6.88 based on reported average daily volume of 2.3M.
This page tracks 52 reported short interest entries for ALTS from June 15, 2021 through February 27, 2026. Over that period, reported short interest ranged from 2.5K to 16.2M shares.
Reported short interest can change for many reasons, including shifts in sentiment, trading activity, and company-specific events.
Extreme edge-case readings may reflect unusually low reported average volume.
| Settlement Date | Short Interest | Prior Short Interest | Change Shares | Change % | Average Daily Volume | Days to Cover |
|---|---|---|---|---|---|---|
| February 27, 2026 | 15,996,528 | 16,245,323 | -248.8K | -1.5% | 2.3M | 6.88 |
| February 13, 2026 | 16,245,323 | 14,874,574 | 1.4M | +9.2% | 3.6M | 4.49 |
| January 30, 2026 | 14,874,574 | 14,971,946 | -97.4K | -0.7% | 4.6M | 3.25 |
| January 15, 2026 | 14,971,946 | 13,050,682 | 1.9M | +14.7% | 6.6M | 2.28 |
| December 31, 2025 | 13,050,682 | 15,509,557 | -2.5M | -15.8% | 3.9M | 3.3 |
| December 15, 2025 | 15,509,557 | 14,196,518 | 1.3M | +9.2% | 3.4M | 4.63 |
| November 28, 2025 | 14,196,518 | 13,705,502 | 491.0K | +3.6% | 3.1M | 4.61 |
| November 14, 2025 | 13,705,502 | 11,781,335 | 1.9M | +16.3% | 3.5M | 3.94 |
| October 31, 2025 | 11,781,335 | 9,827,636 | 2.0M | +19.9% | 6.8M | 1.72 |
| October 15, 2025 | 9,827,636 | 12,179,268 | -2.4M | -19.3% | 6.8M | 1.44 |
| September 15, 2025 | 11,339,538 | 6,800,589 | 4.5M | +66.7% | 16.3M | 1 |
| August 29, 2025 | 6,800,589 | 2,124,607 | 4.7M | +220.1% | 13.8M | 1 |
| August 15, 2025 | 2,124,607 | 841,407 | 1.3M | +152.5% | 12.7M | 1 |
| July 31, 2025 | 841,407 | 997,316 | -155.9K | -15.6% | 244.9K | 3.44 |
| July 15, 2025 | 997,316 | 854,250 | 143.1K | +16.8% | 298.1K | 3.35 |
| June 30, 2025 | 854,250 | 696,935 | 157.3K | +22.6% | 302.6K | 2.82 |
| June 13, 2025 | 696,935 | 510,694 | 186.2K | +36.5% | 244.4K | 2.85 |
| May 30, 2025 | 510,694 | 415,099 | 95.6K | +23.0% | 362.5K | 1.41 |
| May 15, 2025 | 415,099 | 443,989 | -28.9K | -6.5% | 130.0K | 3.19 |
| April 30, 2025 | 443,989 | 395,996 | 48.0K | +12.1% | 193.3K | 2.3 |
| April 15, 2025 | 395,996 | 376,851 | 19.1K | +5.1% | 146.5K | 2.7 |
| March 31, 2025 | 376,851 | 278,724 | 98.1K | +35.2% | 132.8K | 2.84 |
| February 28, 2025 | 331,031 | 235,016 | 96.0K | +40.9% | 233.1K | 1.42 |
| February 14, 2025 | 235,016 | 156,305 | 78.7K | +50.4% | 186.6K | 1.26 |
| January 31, 2025 | 156,305 | 100,769 | 55.5K | +55.1% | 289.3K | 1 |
| January 15, 2025 | 100,769 | 62,943 | 37.8K | +60.1% | 300.4K | 1 |
| December 31, 2024 | 62,943 | 126,691 | -63.7K | -50.3% | 212.6K | 1 |
| December 13, 2024 | 126,691 | 80,686 | 46.0K | +57.0% | 265.4K | 1 |
| November 29, 2024 | 80,686 | 128,813 | -48.1K | -37.4% | 125.5K | 1 |
| November 15, 2024 | 128,813 | 147,846 | -19.0K | -12.9% | 131.7K | 1 |
| October 31, 2024 | 147,846 | 243,563 | -95.7K | -39.3% | 172.5K | 1 |
| October 15, 2024 | 243,563 | 220,984 | 22.6K | +10.2% | 140.6K | 1.73 |
| September 30, 2024 | 220,984 | 355,017 | -134.0K | -37.8% | 199.3K | 1.11 |
| September 13, 2024 | 355,017 | 358,273 | -3.3K | -0.9% | 285.6K | 1.24 |
| August 30, 2024 | 358,273 | 106,639 | 251.6K | +236.0% | 878.9K | 1 |
| August 15, 2024 | 106,639 | 44,932 | 61.7K | +137.3% | 134.6K | 1 |
| July 31, 2024 | 44,932 | 112,083 | -67.2K | -59.9% | 117.0K | 1 |
| July 15, 2024 | 112,083 | 164,993 | -52.9K | -32.1% | 156.0K | 1 |
| December 31, 2021 | 6,588 | 6,588 | 0 | +0.0% | 5.2K | 1.27 |
| December 15, 2021 | 6,588 | 10,560 | -4.0K | -37.6% | 762 | 8.65 |
| November 30, 2021 | 10,560 | 3,972 | 6.6K | +165.9% | 1.3K | 8.23 |
| November 15, 2021 | 3,972 | 3,954 | 18 | +0.5% | 737 | 5.39 |
| October 29, 2021 | 3,954 | 2,554 | 1.4K | +54.8% | 762 | 5.19 |
| October 15, 2021 | 2,554 | 2,956 | -402 | -13.6% | 850 | 3 |
| September 30, 2021 | 2,956 | 2,549 | 407 | +16.0% | 547 | 5.4 |
| September 15, 2021 | 2,549 | 2,698 | -149 | -5.5% | 710 | 3.59 |
| August 31, 2021 | 2,698 | 3,285 | -587 | -17.9% | 1.1K | 2.43 |
| August 13, 2021 | 3,285 | 4,192 | -907 | -21.6% | 1.1K | 2.9 |
| July 30, 2021 | 4,192 | 2,787 | 1.4K | +50.4% | 2.2K | 1.87 |
| July 15, 2021 | 2,787 | 2,890 | -103 | -3.6% | 871 | 3.2 |
| June 30, 2021 | 2,890 | 2,732 | 158 | +5.8% | 920 | 3.14 |
| June 15, 2021 | 2,732 | 3,037 | -305 | -10.0% | 418 | 6.54 |