Watch PTC. Know when insiders buy.
One email the day a filing lands. Free.
| Report date | Shares short | Change | % of shares out | Avg daily volume | Days to cover |
|---|---|---|---|---|---|
| 2026-08-14 | 5.8M | −719K | — | 1.3M | 4.6 |
| 2026-07-31 | 6.5M | +593K | — | 1.8M | 3.6 |
| 2026-07-15 | 5.9M | +548K | — | 1.5M | 4.0 |