ACLS · Axcelis Technologies Inc
Total shares sold short and not yet covered, reported to FINRA by broker-dealers twice a month. Each reading settles on the 15th and the last business day of the month and is published seven business days later — the next scheduled dates are listed at the top of the table. Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-07-15). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
|
2026-08-14
Scheduled
FINRA publishes Aug 25
|
— | — | — | — |
|
2026-07-31
Scheduled
FINRA publishes Aug 11
|
— | — | — | — |
| 2026-07-15 | 1,769,809 | 1,899,085 | -129,276 | 3.14 |
| 2026-06-30 | 1,899,085 | 1,913,857 | -14,772 | 2.65 |
| 2026-06-15 | 1,913,857 | 2,546,993 | -633,136 | 2.96 |
| 2026-05-29 | 2,546,993 | 2,631,151 | -84,158 | 5.38 |
| 2026-05-15 | 2,631,151 | 2,990,185 | -359,034 | 3.26 |
| 2026-04-30 | 2,990,185 | 3,501,747 | -511,562 | 3.78 |
| 2026-04-15 | 3,501,747 | 3,797,370 | -295,623 | 6.09 |
| 2026-03-31 | 3,797,370 | 3,702,963 | +94,407 | 4.99 |
| 2026-03-13 | 3,702,963 | 3,698,624 | +4,339 | 5.09 |
| 2026-02-27 | 3,698,624 | 4,989,876 | -1,291,252 | 2.54 |
| 2026-02-13 | 4,989,876 | 4,751,091 | +238,785 | 6.44 |
| 2026-01-30 | 4,751,091 | 4,639,745 | +111,346 | 9.45 |
| 2026-01-15 | 4,639,745 | 4,011,398 | +628,347 | 7.66 |
| 2025-12-31 | 4,011,398 | 4,214,041 | -202,643 | 10.77 |
| 2025-12-15 | 4,214,041 | 4,071,565 | +142,476 | 7.26 |
| 2025-11-28 | 4,071,565 | 3,815,940 | +255,625 | 8.68 |
| 2025-11-14 | 3,815,940 | 4,379,799 | -563,859 | 4.94 |
| 2025-10-31 | 4,379,799 | 4,473,247 | -93,448 | 8.56 |
| 2025-10-15 | 4,473,247 | 3,961,139 | +512,108 | 4.30 |
| 2025-09-30 | 3,961,139 | 4,670,219 | -709,080 | 7.08 |
| 2025-09-15 | 4,670,219 | 4,569,189 | +101,030 | 11.32 |
| 2025-08-29 | 4,569,189 | 4,581,970 | -12,781 | 11.20 |
| 2025-08-15 | 4,581,970 | 5,284,394 | -702,424 | 6.60 |
| 2025-07-31 | 5,284,394 | 5,357,781 | -73,387 | 11.52 |