StockData
Columbia Banking System, Inc. logo

Columbia Banking System, Inc. (COLB) stock

COLBNasdaqState Commercial BanksFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 4, 2026Score 16/301% above fair value
$30.70−0.31 (-1.00%)

Close on Oct 30, 2026Market cap $8.69BP/E 12.2Yield 4.72%

Price history

Columbia Banking System share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.

Download all as CSV
Close, Oct 30, 2026
$30.70
-1.00% on the day
52-week range
$25.12 – $33.68
-8.8% from the high
Change over 52 weeks
+18.0%
From $26.02 on Oct 30, 2025
Average volume
2.90M
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Oct 30, 2026$31.06$31.13$30.43$30.70-1.00%2,784,334
Oct 29, 2026$31.13$31.41$30.83$31.01+0.94%2,215,282
Oct 28, 2026$31.14$31.24$30.45$30.72-1.03%2,685,828
Oct 27, 2026$31.24$31.24$30.83$31.04-0.06%2,887,058
Oct 26, 2026$30.85$31.24$30.85$31.06+0.66%3,401,968
Oct 23, 2026$30.39$31.06$30.20$30.86+3.23%5,566,080
Oct 22, 2026$29.17$29.90$28.97$29.89+2.36%3,372,988
Oct 21, 2026$29.11$29.24$28.91$29.20+0.72%2,287,673
Oct 20, 2026$28.39$29.16$28.39$28.99+2.33%2,122,202
Oct 19, 2026$28.36$28.51$28.26$28.33-0.39%2,218,602
Oct 16, 2026$28.75$29.34$28.38$28.44-0.66%3,695,898
Oct 15, 2026$28.15$28.65$27.98$28.63+2.14%2,249,174
Oct 14, 2026$27.73$28.10$27.65$28.03-0.71%2,984,155
Oct 13, 2026$28.58$28.75$28.04$28.23-0.98%2,933,251
Oct 12, 2026$28.39$28.64$28.32$28.51+0.49%1,795,103
Oct 9, 2026$28.51$28.53$28.19$28.37-0.56%1,598,530
Oct 8, 2026$28.07$28.55$27.91$28.53+0.96%3,449,576
Oct 7, 2026$28.91$28.91$27.96$28.26-2.18%3,195,033
Oct 6, 2026$28.97$29.17$28.75$28.89+0.17%2,431,210
Oct 5, 2026$29.00$29.10$28.61$28.84-0.28%2,597,763
Oct 2, 2026$28.95$29.25$28.80$28.92+0.66%2,376,568
Oct 1, 2026$28.42$28.83$27.96$28.73+0.45%3,302,058
Sep 30, 2026$28.70$29.00$28.49$28.60-0.31%2,446,904
Sep 29, 2026$29.07$29.20$28.52$28.69-1.27%3,575,296
Sep 28, 2026$29.60$29.60$29.03$29.06-1.96%2,046,029
Sep 25, 2026$29.43$29.81$29.30$29.64+1.58%1,847,833
Sep 24, 2026$28.89$29.25$28.76$29.18+1.14%2,930,212
Sep 23, 2026$29.34$29.49$28.82$28.85-1.67%2,600,928
Sep 22, 2026$29.93$30.10$29.34$29.34-1.87%2,580,649
Sep 21, 2026$30.06$30.31$29.82$29.90-0.10%2,186,312

Seasonality

COLB return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average-1.5%-0.5%-8.1%-0.4%-0.3%2.6%4.3%-0.6%-0.6%5.0%6.5%-0.4%
Months up6 of 104 of 102 of 105 of 105 of 106 of 107 of 104 of 104 of 107 of 108 of 94 of 9
20265.3%-2.2%-3.6%7.9%1.4%8.1%-2.4%-4.1%-3.5%7.3%
20253.3%-2.9%-6.7%-10.1%5.9%0.0%1.8%14.0%-3.8%4.1%4.8%0.8%
2024-24.4%-8.4%6.9%-2.8%4.4%3.2%31.5%-2.3%3.7%9.2%10.0%-12.9%
20232.6%-2.9%-28.0%-0.3%-4.6%1.2%10.2%-6.7%-0.9%-3.1%15.9%18.9%
20226.3%6.3%-11.9%-13.0%8.5%-5.0%5.3%0.3%-3.5%17.0%1.8%-11.5%
20217.3%15.7%-2.7%1.0%-0.2%-10.7%-9.4%4.9%4.5%-9.5%-3.7%-0.4%
2020-4.9%-13.1%-19.3%0.7%-8.5%16.4%2.1%-2.6%-14.5%19.1%12.4%13.6%
20191.3%4.2%-13.7%14.8%-10.2%8.5%4.2%-7.7%6.9%6.5%0.1%4.1%
2018-0.8%-2.5%0.4%-4.1%6.4%-3.8%0.1%3.9%-8.2%-4.3%10.9%-10.8%
2017-11.0%0.9%-2.3%1.3%-6.6%8.6%-0.0%-6.2%13.3%3.8%6.0%-5.8%