APTOF
Aptose Biosciences Inc.Company with tickers: APTOF
CIK
882361
CUSIP
03835T408
Shares Outstanding
2,552,429
Website
https://www.aptose.com
Investor Relations
https://www.aptose.com/investors
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
48/100
Short interest 0.1% of shares — P21
Days to cover 1.3 — P32
Short-volume trend +15.3% — P91
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 |
|---|---|---|---|---|
| 2026-05-29 | 3,261 | 3,305 | -44 | 1.30 |
| 2026-05-15 | 3,305 | 3,381 | -76 | 1.00 |
| 2026-04-30 | 3,381 | 3,463 | -82 | 1.00 |
| 2026-04-15 | 3,463 | 21,441 | -17,978 | 1.03 |
| 2026-03-31 | 21,441 | 13,570 | +7,871 | 1.47 |
| 2026-03-13 | 13,570 | 13,369 | +201 | 1.00 |
| 2026-02-27 | 13,369 | 13,616 | -247 | 1.00 |
| 2026-02-13 | 13,616 | 17,616 | -4,000 | 3.52 |
| 2026-01-30 | 17,616 | 20,282 | -2,666 | 1.90 |
| 2026-01-15 | 20,282 | 19,570 | +712 | 2.82 |
| 2025-12-31 | 19,570 | 8,483 | +11,087 | 1.00 |
| 2025-12-15 | 8,483 | 7,560 | +923 | 1.00 |
| 2025-11-28 | 7,560 | 5,868 | +1,692 | 1.00 |
| 2025-11-14 | 5,868 | 5,474 | +394 | 1.00 |
| 2025-10-31 | 5,474 | 6,278 | -804 | 1.43 |
| 2025-10-15 | 6,278 | 5,952 | +326 | 1.17 |
| 2025-09-30 | 5,952 | 5,961 | -9 | 1.00 |
| 2025-09-15 | 5,961 | 6,229 | -268 | 2.37 |
| 2025-08-29 | 6,229 | 6,410 | -181 | 1.19 |
| 2025-08-15 | 6,410 | 6,468 | -58 | 1.10 |
| 2025-07-31 | 6,468 | 7,888 | -1,420 | 1.00 |
| 2025-07-15 | 7,888 | 11,700 | -3,812 | 1.00 |
| 2025-06-30 | 11,700 | 10,596 | +1,104 | 1.00 |
Showing 1–23 of 23 settlements