ACLS
Axcelis Technologies IncCompany with tickers: ACLS
CIK
1113232
CUSIP
054540208
Shares Outstanding
30,733,897
Website
https://www.axcelis.com
13F Activity (30d)
17 filings
14 filers
Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.
Short Squeeze Score
61/100
Short interest 8.3% of shares — P85
Days to cover 5.4 — P75
Short-volume trend -7.9% — P24
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-05-29). Equal-weight mean of the available factors.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2021-06-15 | 756,541 | 678,096 | +78,445 | 5.34 |
| 2021-06-30 | 747,149 | 756,541 | -9,392 | 2.99 |
| 2021-07-15 | 834,829 | 747,149 | +87,680 | 4.23 |
| 2021-07-30 | 827,870 | 834,829 | -6,959 | 4.59 |
| 2021-08-13 | 905,270 | 827,870 | +77,400 | 3.71 |
| 2021-08-31 | 1,074,619 | 905,270 | +169,349 | 3.76 |
| 2021-09-15 | 1,218,161 | 1,074,619 | +143,542 | 7.07 |
| 2021-09-30 | 1,104,048 | 1,218,161 | -114,113 | 4.98 |
| 2021-10-15 | 1,093,493 | 1,104,048 | -10,555 | 4.13 |
| 2021-10-29 | 1,069,159 | 1,093,493 | -24,334 | 3.22 |
| 2021-11-15 | 718,138 | 1,069,159 | -351,021 | 1.59 |
| 2021-11-30 | 729,735 | 718,138 | +11,597 | 1.65 |
| 2021-12-15 | 966,290 | 729,735 | +236,555 | 2.19 |
| 2021-12-31 | 952,816 | 966,290 | -13,474 | 2.24 |
| 2022-01-14 | 796,469 | 952,816 | -156,347 | 1.68 |
| 2022-01-31 | 772,079 | 796,469 | -24,390 | 1.69 |
| 2022-02-15 | 791,024 | 772,079 | +18,945 | 1.46 |
| 2022-02-28 | 686,930 | 791,024 | -104,094 | 1.89 |
| 2022-03-15 | 958,538 | 686,930 | +271,608 | 1.88 |
| 2022-03-31 | 1,008,927 | 958,538 | +50,389 | 1.59 |
| 2022-04-14 | 1,042,395 | 1,008,927 | +33,468 | 1.66 |
| 2022-04-29 | 1,188,378 | 1,042,395 | +145,983 | 3.26 |
| 2022-05-13 | 1,325,573 | 1,188,378 | +137,195 | 2.64 |
| 2022-05-31 | 1,225,281 | 1,325,573 | -100,292 | 3.84 |
| 2022-06-15 | 1,326,727 | 1,225,281 | +101,446 | 4.42 |
| 2022-06-30 | 1,023,862 | 1,326,727 | -302,865 | 2.99 |
| 2022-07-15 | 1,117,744 | 1,023,862 | +93,882 | 3.35 |
| 2022-07-29 | 1,079,687 | 1,117,744 | -38,057 | 2.68 |
| 2022-08-15 | 1,076,356 | 1,079,687 | -3,331 | 1.87 |
| 2022-08-31 | 1,085,665 | 1,076,356 | +9,309 | 1.44 |
| 2022-09-15 | 1,103,712 | 1,085,665 | +18,047 | 3.04 |
| 2022-09-30 | 1,134,653 | 1,103,712 | +30,941 | 3.26 |
| 2022-10-14 | 1,390,466 | 1,134,653 | +255,813 | 3.43 |
| 2022-10-31 | 1,257,567 | 1,390,466 | -132,899 | 3.39 |
| 2022-11-15 | 1,131,722 | 1,257,567 | -125,845 | 2.68 |
| 2022-11-30 | 962,230 | 1,131,722 | -169,492 | 2.89 |
| 2022-12-15 | 1,127,211 | 962,230 | +164,981 | 3.06 |
| 2022-12-30 | 1,333,067 | 1,127,211 | +205,856 | 3.64 |
| 2023-01-13 | 1,148,018 | 1,333,067 | -185,049 | 2.24 |
| 2023-01-31 | 1,359,270 | 1,148,018 | +211,252 | 2.68 |
| 2023-02-15 | 1,486,770 | 1,359,270 | +127,500 | 2.12 |
| 2023-02-28 | 1,895,566 | 1,486,770 | +408,796 | 2.93 |
| 2023-03-15 | 1,493,928 | 1,895,566 | -401,638 | 1.97 |
| 2023-03-31 | 1,578,714 | 1,493,928 | +84,786 | 2.58 |
| 2023-04-14 | 1,485,702 | 1,578,714 | -93,012 | 3.32 |
| 2023-04-28 | 1,588,528 | 1,485,702 | +102,826 | 3.39 |
| 2023-05-15 | 1,504,886 | 1,588,528 | -83,642 | 2.85 |
| 2023-05-31 | 1,744,772 | 1,504,886 | +239,886 | 3.03 |
| 2023-06-15 | 1,978,009 | 1,744,772 | +233,237 | 3.58 |
| 2023-06-30 | 1,831,911 | 1,978,009 | -146,098 | 3.24 |
Showing 1–50 of 120 settlements