Potential Short Squeeze Looms in Columbia Banking System (COLB)

In the past 20 years (since 2005 with the introduction of RegSho), short selling has come under scrutiny as millions of retail investors have discovered what we have been highlighting since early 2005. Market makers abuse the “market maker’s exemption” and short excessive amounts of shares in your stock without locating, borrowing, paying the rebate or the interest rate to borrow. They are required to cover on the same trading day, and our data proves they do not.

The chart below shows “Daily Short Volume” in Columbia Banking System, Inc. (COLB), and includes both EXEMPT (market makers) and NON-EXEMPT (everyone else) short sales. We consolidate the tape of all 14 US stock exchanges and purchase the “sell short” trade identifier data directly from the exchanges on a daily basis. This complete view of the trading in your stock shows a vastly different picture than “Total Short Interest”, which only includes non-exempt short sales that have not been covered by the twice per month reporting date. Unfortunately, this misses the majority of the short selling.

This indicates that a Short Squeeze may be starting in shares of Columbia Banking System, Inc. at $25.41, after crossing above the $25.265 Trigger Price. This could signal a buying opportunity, given the right market conditions.

You can find the full report at [ https://www.woprai.com/ ]

Please find the applicable data below, drawn from all major market providers.

Date	Short Volume	Total Volume	Percentage	Squeeze Trigger	$ Value
2025-07-07	1,656,364	3,006,787	55.09	25.24	41,806,627
2025-07-03	1,393,053	2,244,725	62.06	25.49	35,508,921
2025-07-02	1,856,780	3,298,049	56.3	24.87	46,178,119
2025-07-01	1,582,537	4,648,627	34.04	24.32	38,487,300
2025-06-30	911,557	2,378,838	38.32	23.42	21,348,665
2025-06-27	1,035,091	2,339,171	44.25	23.41	24,231,480
2025-06-26	902,382	1,986,077	45.44	23.42	21,133,786
2025-06-25	726,053	1,694,821	42.84	22.95	16,662,916
2025-06-24	795,360	1,983,745	40.09	23.21	18,460,306
2025-06-23	656,223	1,831,749	35.82	22.72	14,909,387
2025-06-20	1,312,691	3,026,934	43.37	22.46	29,483,040
2025-06-18	564,477	1,305,118	43.25	22.32	12,599,127
2025-06-17	621,889	1,640,581	37.91	22.07	13,725,090
2025-06-16	632,529	1,983,016	31.9	22.68	14,345,758
2025-06-13	1,411,123	2,616,701	53.93	22.75	32,103,048
2025-06-12	984,173	2,092,295	47.04	23.32	22,950,914
2025-06-11	843,965	2,330,397	36.22	23.81	20,094,807
2025-06-10	1,045,176	2,445,001	42.75	24.07	25,157,386
2025-06-09	1,093,943	1,670,381	65.49	24.08	26,342,147
2025-06-06	1,158,676	1,740,069	66.59	23.77	27,541,729
2025-06-05	1,303,325	1,920,422	67.87	23.01	29,989,508
2025-06-04	997,766	1,492,135	66.87	23.16	23,108,261
2025-06-03	1,136,704	2,101,277	54.1	23.39	26,587,507
2025-06-02	1,123,356	1,804,984	62.24	23.05	25,893,356
2025-05-30	1,219,990	2,246,230	54.31	23.4	28,547,766
2025-05-29	1,565,585	2,778,865	56.34	23.76	37,198,300
2025-05-28	890,381	1,557,245	57.18	23.77	21,164,356
2025-05-27	924,850	1,488,783	62.12	24.07	22,261,140
2025-05-23	1,191,420	1,898,308	62.76	23.51	28,010,284
2025-05-22	1,390,252	2,163,412	64.26	23.72	32,976,777
2025-05-21	832,489	1,746,163	47.68	23.95	19,938,112
2025-05-20	1,005,761	1,574,790	63.87	24.76	24,902,642
2025-05-19	861,310	1,264,407	68.12	24.85	21,403,554
2025-05-16	1,098,706	1,713,730	64.11	24.92	27,379,754
2025-05-15	791,191	1,350,279	58.59	25.11	19,866,806
2025-05-14	874,943	1,596,687	54.8	25.22	22,066,062
2025-05-13	953,652	1,870,554	50.98	25.58	24,394,418

Total	687,842,050	1,630,179,197	42.19	25.26	17,378,231,572

* Totals include all data records back to 2020-07-09 00:00:00, data set is truncated for viewing.