Unifirst Corporation (UNF): Short Volume History
Daily short sale volume for UNF from FINRA Reg SHO data. Average short ratio over the last 21 trading days: 55.19%.
Daily short volume (21 most recent sessions)
| Date | Short volume | Total volume | Short ratio |
|---|---|---|---|
| Oct 26, 2026 | 71,617 | 86,517 | 82.78% |
| Oct 23, 2026 | 48,924 | 147,365 | 33.20% |
| Oct 22, 2026 | 53,242 | 71,968 | 73.98% |
| Oct 21, 2026 | 53,644 | 136,327 | 39.35% |
| Oct 20, 2026 | 24,825 | 40,084 | 61.93% |
| Oct 19, 2026 | 25,869 | 47,251 | 54.75% |
| Oct 16, 2026 | 77,256 | 90,340 | 85.52% |
| Oct 15, 2026 | 34,345 | 48,622 | 70.64% |
| Oct 14, 2026 | 56,359 | 124,496 | 45.27% |
| Oct 13, 2026 | 36,888 | 73,723 | 50.04% |
| Oct 12, 2026 | 24,285 | 62,812 | 38.66% |
| Oct 9, 2026 | 48,139 | 81,929 | 58.76% |
| Oct 8, 2026 | 42,335 | 70,166 | 60.34% |
| Oct 7, 2026 | 30,847 | 76,093 | 40.54% |
| Oct 6, 2026 | 37,267 | 71,525 | 52.10% |
| Oct 5, 2026 | 27,042 | 49,277 | 54.88% |
| Oct 2, 2026 | 67,559 | 182,297 | 37.06% |
| Oct 1, 2026 | 51,569 | 110,416 | 46.70% |
| Sep 30, 2026 | 80,508 | 149,486 | 53.86% |
| Sep 29, 2026 | 69,679 | 144,348 | 48.27% |
| Sep 28, 2026 | 51,622 | 73,323 | 70.40% |
Frequently asked questions
What is short volume for UNF?
Short volume is the portion of daily trading volume in UNF that was executed as short sales. FINRA publishes this data every trading day as part of the Reg SHO daily short sale volume files.
Is short volume the same as short interest?
No. Short volume counts short sales each day (flow), while short interest measures open short positions at a point in time (stock). A share can be sold short and covered in the same day without affecting short interest.
What is a high short volume ratio?
A short volume ratio above 50% means more than half of that day's reported volume was short sales. Sustained high ratios can indicate aggressive shorting pressure.