COLB · Columbia Banking System, Inc.

$31.26 +0.23 (+0.73%)

Market Cap

$8.78B

282.90M

Total shares sold short and not yet covered, reported to FINRA by broker-dealers twice a month. Each reading settles on the 15th and the last business day of the month and is published seven business days later — the next scheduled dates are listed at the top of the table. Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.

Short Squeeze Score

65/100

Short interest 3.4% of shares — P62 Days to cover 3.8 — P55 Price vs VWAP +1.0% — P58 Short-volume trend +12.1% — P81 Short interest change +11.9% — P75 Worst FTD 0.06% of shares — P71

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-07-15). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.

1M 3M 6M 1Y 5Y All

Short Interest History

Settlement Date	Current Position	Previous Position	Change	Avg Daily Volume	Days to Cover
2026-08-14 Scheduled FINRA publishes Aug 25	—	—	—	—	—
2026-07-31 Scheduled FINRA publishes Aug 11	—	—	—	—	—
2026-07-15	9,626,180	8,602,470	+1,023,710	2,541,289	3.79
2026-06-30	8,602,470	9,499,305	-896,835	3,270,496	2.63
2026-06-15	9,499,305	9,820,675	-321,370	2,868,404	3.31
2026-05-29	9,820,675	8,889,228	+931,447	2,476,936	3.96
2026-05-15	8,889,228	9,216,519	-327,291	2,983,707	2.98
2026-04-30	9,216,519	9,289,482	-72,963	2,405,784	3.83
2026-04-15	9,289,482	11,193,403	-1,903,921	2,770,607	3.35
2026-03-31	11,193,403	12,313,581	-1,120,178	3,228,572	3.47
2026-03-13	12,313,581	11,162,309	+1,151,272	2,832,714	4.35
2026-02-27	11,162,309	10,796,357	+365,952	2,903,408	3.84
2026-02-13	10,796,357	8,815,556	+1,980,801	2,870,886	3.76
2026-01-30	8,815,556	8,158,129	+657,427	3,438,835	2.56
2026-01-15	8,158,129	8,722,524	-564,395	2,060,857	3.96
2025-12-31	8,722,524	9,108,389	-385,865	2,102,322	4.15
2025-12-15	9,108,389	9,684,192	-575,803	2,753,692	3.31
2025-11-28	9,684,192	9,295,114	+389,078	2,774,706	3.49
2025-11-14	9,295,114	9,525,714	-230,600	3,220,250	2.89
2025-10-31	9,525,714	9,711,008	-185,294	5,440,180	1.75
2025-10-15	9,711,008	8,531,147	+1,179,861	5,544,999	1.75
2025-09-30	8,531,147	6,576,023	+1,955,124	5,623,170	1.52
2025-09-15	6,576,023	13,917,412	-7,341,389	6,179,035	1.06
2025-08-29	13,917,412	12,077,646	+1,839,766	4,884,615	2.85
2025-08-15	12,077,646	9,623,585	+2,454,061	2,220,133	5.44

Showing 1–23 of 23 settlements

Key facts CIK 887343 CUSIP 197236102 13F (30d) 255 filings 242 filers Visit website Investor relations