COLB
Columbia Banking System, Inc.Company with tickers: COLB
CIK
887343
CUSIP
197236102
Shares Outstanding
289,490,366
13F Activity (30d)
381 filings
357 filers
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-05-15 | 8,889,228 | 9,216,519 | -327,291 | 2.98 |
| 2026-04-30 | 9,216,519 | 9,289,482 | -72,963 | 3.83 |
| 2026-04-15 | 9,289,482 | 11,193,403 | -1,903,921 | 3.35 |
| 2026-03-31 | 11,193,403 | 12,313,581 | -1,120,178 | 3.47 |
| 2026-03-13 | 12,313,581 | 11,162,309 | +1,151,272 | 4.35 |
| 2026-02-27 | 11,162,309 | 10,796,357 | +365,952 | 3.84 |
| 2026-02-13 | 10,796,357 | 8,815,556 | +1,980,801 | 3.76 |
| 2026-01-30 | 8,815,556 | 8,158,129 | +657,427 | 2.56 |
| 2026-01-15 | 8,158,129 | 8,722,524 | -564,395 | 3.96 |
| 2025-12-31 | 8,722,524 | 9,108,389 | -385,865 | 4.15 |
| 2025-12-15 | 9,108,389 | 9,684,192 | -575,803 | 3.31 |
| 2025-11-28 | 9,684,192 | 9,295,114 | +389,078 | 3.49 |
| 2025-11-14 | 9,295,114 | 9,525,714 | -230,600 | 2.89 |
| 2025-10-31 | 9,525,714 | 9,711,008 | -185,294 | 1.75 |
| 2025-10-15 | 9,711,008 | 8,531,147 | +1,179,861 | 1.75 |
| 2025-09-30 | 8,531,147 | 6,576,023 | +1,955,124 | 1.52 |
| 2025-09-15 | 6,576,023 | 13,917,412 | -7,341,389 | 1.06 |
| 2025-08-29 | 13,917,412 | 12,077,646 | +1,839,766 | 2.85 |
| 2025-08-15 | 12,077,646 | 9,623,585 | +2,454,061 | 5.44 |
| 2025-07-31 | 9,623,585 | 10,119,080 | -495,495 | 3.42 |
| 2025-07-15 | 10,119,080 | 11,440,718 | -1,321,638 | 3.76 |
| 2025-06-30 | 11,440,718 | 10,680,746 | +759,972 | 5.19 |
| 2025-06-13 | 10,680,746 | 10,039,975 | +640,771 | 5.33 |
| 2025-05-30 | 10,039,975 | 9,609,636 | +430,339 | 5.49 |