PDFS short interest
PDF Solutions · settlement of Oct 30, 2026
As of Oct 30, 2026, 3.5M PDFS shares were sold short, up 6.0% from the Oct 15, 2026 count. At the stock's average daily volume, that is 5.8 days to cover.
PDF Solutions research · PDFS trades by Congress · Short interest movers · Most shorted stocks · Source
- Shares sold short
- 3.5M3,509,864
- Change
- +6.0%from 3.3M
- Of shares outstanding
- 8.31%#974 of 3,711 stocks measured
- Days to cover
- 5.8at the average daily volume
- Average daily volume
- 602,304shares, as FINRA reports it
- Most in 16 settlements
- 3.5MSep 30, 2026
Every settlement
16 settlements, newest first| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| Oct 30, 2026 | 3,509,864 | +6.0% | 602,304 | 5.8 |
| Oct 15, 2026 | 3,310,252 | −6.5% | 586,373 | 5.7 |
| Sep 30, 2026 | 3,541,446 | +9.0% | 609,376 | 5.8 |
| Sep 15, 2026 | 3,248,816 | +6.0% | 568,848 | 5.7 |
| Aug 31, 2026 | 3,066,316 | +25.9% | 694,838 | 4.4 |
| Aug 14, 2026 | 2,435,684 | +2.4% | 495,884 | 4.9 |
| Jul 31, 2026 | 2,377,838 | −8.0% | 512,477 | 4.6 |
| Jul 15, 2026 | 2,583,493 | +19.3% | 662,905 | 3.9 |
| Jun 30, 2026 | 2,166,315 | −2.5% | 826,576 | 2.6 |
| Jun 15, 2026 | 2,220,874 | +28.3% | 862,244 | 2.6 |
| May 29, 2026 | 1,730,757 | −1.4% | 663,505 | 2.6 |
| May 15, 2026 | 1,755,337 | −7.8% | 1,223,790 | 1.4 |
| Apr 30, 2026 | 1,903,669 | +11.1% | 575,389 | 3.3 |
| Apr 15, 2026 | 1,713,003 | −8.9% | 341,209 | 5.0 |
| Mar 31, 2026 | 1,880,406 | +5.2% | 367,981 | 5.1 |
| Mar 13, 2026 | 1,786,751 | — | 287,216 | 6.2 |
Source
Short interest is the number of shares sold short and not yet bought back. Brokers report it to FINRA for two settlement dates a month, the middle and the end, and FINRA publishes each count about a week later. It is not a daily figure: between settlements no one publishes a count. Days to cover is the short interest divided by the average daily volume FINRA reports beside it. A rising count is shown in red and a falling one in green.