Watch COLB. 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 | 9.8M | +1.2M | — | 2.6M | 3.8 |
| 2026-07-31 | 8.6M | −997K | — | 3.4M | 2.6 |
| 2026-07-15 | 9.6M | +1M | — | 2.5M | 3.8 |