COLB vs. RF

Last updated Jun 4, 2026

COLB (Columbia Banking System, Inc.) and RF (Regions Financial Corporation) are both stocks. Both operate in the Banks - Regional industry within the Financial Services sector. Over the past 10 years, COLB returned 3.88%/yr vs 15.25%/yr for RF. At a 0.46 correlation, their price movements are largely independent.

Performance

COLB vs. RF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Banking System, Inc. (COLB) and Regions Financial Corporation (RF). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COLB achieves a 4.85% return, which is significantly higher than RF's 3.05% return. Over the past 10 years, COLB has underperformed RF with an annualized return of 3.88%, while RF has yielded a comparatively higher 15.25% annualized return.

COLB

• 1D: -2.02%
• 1M: -0.41%
• YTD: 4.85%
• 6M: 4.03%
• 1Y: 28.38%
• 3Y*: 15.75%
• 5Y*: -2.91%
• 10Y*: 3.88%

RF

• 1D: -2.25%
• 1M: 0.01%
• YTD: 3.05%
• 6M: 6.59%
• 1Y: 32.36%
• 3Y*: 20.75%
• 5Y*: 8.57%
• 10Y*: 15.25%

*Multi-year figures are annualized to reflect compound growth (CAGR)

COLB vs. RF - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
COLB Columbia Banking System, Inc.	4.85%	9.36%	8.05%	-5.86%	-4.26%	-6.24%	-8.16%	15.54%	-14.36%	-0.65%
RF Regions Financial Corporation	3.05%	21.99%	27.00%	-5.69%	2.33%	39.39%	-1.61%	33.35%	-20.59%	22.95%

Correlation

The correlation between COLB and RF is 0.78, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.77
Correlation (10Y) Calculated over the trailing 10-year period	0.77
Correlation (All Time) Calculated using the full available price history since Jun 17, 1992	0.46

Over the past year, COLB and RF have become more correlated (0.78) than their long-term average of 0.46, meaning their price movements have been converging.

Fundamentals

Market Cap COLB : $8.35B RF : $23.78B
EPS COLB : $2.53 RF : $2.51
PE Ratio COLB : 11.32 RF : 10.90
PS Ratio COLB : 2.24 RF : 2.52
PB Ratio COLB : 1.09 RF : 1.37
Total Revenue (TTM) COLB : $3.32B RF : $9.62B
Gross Profit (TTM) COLB : $1.71B RF : $7.29B
EBITDA (TTM) COLB : $736.44M RF : $2.90B

Return for Risk

COLB vs. RF — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

COLB

COLB Risk / Return Rank: 68
COLB Sharpe Ratio Rank: 70
COLB Sortino Ratio Rank: 64
COLB Omega Ratio Rank: 63
COLB Calmar Ratio Rank: 69
COLB Martin Ratio Rank: 72

RF

RF Risk / Return Rank: 73
RF Sharpe Ratio Rank: 78
RF Sortino Ratio Rank: 72
RF Omega Ratio Rank: 71
RF Calmar Ratio Rank: 71
RF Martin Ratio Rank: 72

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

COLB vs. RF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Banking System, Inc. (COLB) and Regions Financial Corporation (RF). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	COLB	RF	Difference
Sharpe ratio Return per unit of total volatility	0.94	1.32	-0.38
Sortino ratio Return per unit of downside risk	1.49	1.85	-0.37
Omega ratio Gain probability vs. loss probability	1.18	1.24	-0.06
Calmar ratio Return relative to maximum drawdown	1.55	1.76	-0.21
Martin ratio Return relative to average drawdown	4.23	4.23	0.00
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

COLB vs. RF - Sharpe Ratio Comparison

The current COLB Sharpe Ratio is 0.94, which is comparable to the RF Sharpe Ratio of 1.32. The chart below compares the historical Sharpe Ratios of COLB and RF, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	COLB	RF	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.94	1.32	-0.38
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.08	0.27	-0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.10	0.43	-0.32
Sharpe Ratio (All Time) Calculated using the full available price history	0.17	0.18	0.00

Drawdowns

COLB vs. RF - Drawdown Comparison

The maximum COLB drawdown since its inception was -85.93%, smaller than the maximum RF drawdown of -92.65%. Use the drawdown chart below to compare losses from any high point for COLB and RF.

Drawdown Indicators

	COLB	RF	Difference
Max Drawdown Largest peak-to-trough decline	-85.93%	-92.65%	+6.72%
Max Drawdown (1Y) Largest decline over 1 year	-18.38%	-18.45%	+0.07%
Max Drawdown (3Y) Largest decline over 3 years	-36.43%	-32.35%	-4.08%
Max Drawdown (5Y) Largest decline over 5 years	-54.47%	-40.99%	-13.48%
Max Drawdown (10Y) Largest decline over 10 years	-60.80%	-60.73%	-0.07%
Current Drawdown Current decline from peak	-25.98%	-9.77%	-16.21%
Average Drawdown Average peak-to-trough decline	-27.55%	-31.08%	+3.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.73%	7.67%	-0.94%

Volatility

COLB vs. RF - Volatility Comparison

Columbia Banking System, Inc. (COLB) has a higher volatility of 7.31% compared to Regions Financial Corporation (RF) at 6.85%. This indicates that COLB's price experiences larger fluctuations and is considered to be riskier than RF based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	COLB	RF	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.31%	6.85%	+0.46%
Volatility (6M) Calculated over the trailing 6-month period	18.61%	17.88%	+0.73%
Volatility (1Y) Calculated over the trailing 1-year period	30.39%	24.75%	+5.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	38.17%	31.53%	+6.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	37.98%	35.92%	+2.06%

Dividends

COLB vs. RF - Dividend Comparison

COLB's dividend yield for the trailing twelve months is around 5.14%, more than RF's 3.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COLB Columbia Banking System, Inc.	5.14%	5.19%	5.33%	5.17%	3.98%	3.48%	3.12%	2.75%	2.76%	2.03%	3.42%	3.57%
RF Regions Financial Corporation	3.87%	5.12%	4.17%	4.54%	3.43%	2.98%	3.85%	3.44%	3.44%	1.82%	1.78%	2.40%

Financials

COLB vs. RF - Profitability Comparison

The chart below illustrates the profitability comparison between Columbia Banking System, Inc. and Regions Financial Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

COLB - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Columbia Banking System, Inc. reported a gross profit of 0.00 and revenue of 816.00M. Therefore, the gross margin over that period was 0.0%.

RF - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Regions Financial Corporation reported a gross profit of 1.78B and revenue of 2.33B. Therefore, the gross margin over that period was 76.6%.

COLB - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Columbia Banking System, Inc. reported an operating income of 0.00 and revenue of 816.00M, resulting in an operating margin of 0.0%.

RF - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Regions Financial Corporation reported an operating income of 714.00M and revenue of 2.33B, resulting in an operating margin of 30.7%.

COLB - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Columbia Banking System, Inc. reported a net income of 192.00M and revenue of 816.00M, resulting in a net margin of 23.5%.

RF - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Regions Financial Corporation reported a net income of 559.00M and revenue of 2.33B, resulting in a net margin of 24.0%.

Frequently Asked Questions

Can I hold both COLB and RF in my portfolio?

COLB and RF have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, COLB or RF?

COLB has higher volatility (7.31%) compared to RF (6.85%). In terms of maximum drawdown, COLB dropped -85.93% vs RF's -92.65%.

Which has better risk-adjusted returns?

RF currently has the higher Sharpe Ratio (1.32 vs 0.94), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.