WMKTX vs. COTZX

Last updated Jun 4, 2026

WMKTX (WesMark Tactical Opportunity Fund) and COTZX (Columbia Thermostat Fund) are both Tactical Allocation funds. Over the past 5 years, WMKTX returned 5.36%/yr vs 4.79%/yr for COTZX. A 0.76 correlation means they provide meaningful diversification when combined. WMKTX charges 1.43%/yr vs 0.24%/yr for COTZX.

Performance

WMKTX vs. COTZX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WesMark Tactical Opportunity Fund (WMKTX) and Columbia Thermostat Fund (COTZX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WMKTX achieves a 7.28% return, which is significantly higher than COTZX's 3.49% return.

WMKTX

• 1D: 0.22%
• 1M: 2.31%
• YTD: 7.28%
• 6M: 7.44%
• 1Y: 19.42%
• 3Y*: 11.73%
• 5Y*: 5.36%
• 10Y*: —

COTZX

• 1D: 0.05%
• 1M: 1.66%
• YTD: 3.49%
• 6M: 3.53%
• 1Y: 12.68%
• 3Y*: 10.87%
• 5Y*: 4.79%
• 10Y*: 7.44%

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

WMKTX vs. COTZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WMKTX WesMark Tactical Opportunity Fund	7.28%	15.41%	7.19%	7.10%	-12.40%	13.90%	7.01%	16.62%	-5.20%	8.33%
COTZX Columbia Thermostat Fund	3.49%	15.02%	7.98%	11.66%	-12.92%	6.44%	29.61%	15.15%	-1.17%	2.05%

Correlation

The correlation between WMKTX and COTZX is 0.82, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.74
Correlation (All Time) Calculated using the full available price history since Mar 2, 2017	0.76

The correlation between WMKTX and COTZX has been stable across timeframes, ranging from 0.74 to 0.82 - a consistent structural relationship.

Return for Risk

WMKTX vs. COTZX — Risk / Return Rank

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

WMKTX

WMKTX Risk / Return Rank: 67
WMKTX Sharpe Ratio Rank: 64
WMKTX Sortino Ratio Rank: 62
WMKTX Omega Ratio Rank: 61
WMKTX Calmar Ratio Rank: 76
WMKTX Martin Ratio Rank: 74

COTZX

COTZX Risk / Return Rank: 78
COTZX Sharpe Ratio Rank: 79
COTZX Sortino Ratio Rank: 81
COTZX Omega Ratio Rank: 77
COTZX Calmar Ratio Rank: 70
COTZX Martin Ratio Rank: 81

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.

WMKTX vs. COTZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WesMark Tactical Opportunity Fund (WMKTX) and Columbia Thermostat Fund (COTZX). 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.

	WMKTX	COTZX	Difference
Sharpe ratio: Return per unit of total volatility	2.36	2.57	-0.22
Sortino ratio: Return per unit of downside risk	3.31	3.82	-0.51
Omega ratio: Gain probability vs. loss probability	1.44	1.50	-0.07
Calmar ratio: Return relative to maximum drawdown	3.44	3.24	+0.20
Martin ratio: Return relative to average drawdown	14.11	15.24	-1.13
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WMKTX vs. COTZX - Sharpe Ratio Comparison

The current WMKTX Sharpe Ratio is 2.36, which is comparable to the COTZX Sharpe Ratio of 2.57. The chart below compares the historical Sharpe Ratios of WMKTX and COTZX, 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

	WMKTX	COTZX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.36	2.57	-0.22
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.44	0.66	-0.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	1.01	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.51	0.64	-0.14

Drawdowns

WMKTX vs. COTZX - Drawdown Comparison

The maximum WMKTX drawdown since its inception was -28.48%, smaller than the maximum COTZX drawdown of -47.48%. Use the drawdown chart below to compare losses from any high point for WMKTX and COTZX.

Drawdown Indicators

	WMKTX	COTZX	Difference
Max Drawdown Largest peak-to-trough decline	-28.48%	-47.48%	+19.00%
Max Drawdown (1Y) Largest decline over 1 year	-5.79%	-4.02%	-1.77%
Max Drawdown (3Y) Largest decline over 3 years	-10.25%	-6.93%	-3.32%
Max Drawdown (5Y) Largest decline over 5 years	-25.49%	-17.80%	-7.69%
Max Drawdown (10Y) Largest decline over 10 years	—	-17.80%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-7.03%	-3.47%	-3.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.41%	0.85%	+0.56%

Volatility

WMKTX vs. COTZX - Volatility Comparison

WesMark Tactical Opportunity Fund (WMKTX) has a higher volatility of 2.42% compared to Columbia Thermostat Fund (COTZX) at 1.60%. This indicates that WMKTX's price experiences larger fluctuations and is considered to be riskier than COTZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WMKTX	COTZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.42%	1.60%	+0.82%
Volatility (6M) Calculated over the trailing 6-month period	6.63%	3.96%	+2.67%
Volatility (1Y) Calculated over the trailing 1-year period	8.47%	5.06%	+3.41%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.37%	7.33%	+5.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.20%	7.39%	+5.81%

WMKTX vs. COTZX - Expense Ratio Comparison

WMKTX has a 1.43% expense ratio, which is higher than COTZX's 0.24% expense ratio.

Dividends

WMKTX vs. COTZX - Dividend Comparison

WMKTX's dividend yield for the trailing twelve months is around 4.02%, more than COTZX's 3.25% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COTZX Columbia Thermostat Fund	3.25%	3.37%	3.55%	2.74%	3.28%	14.82%	6.92%	5.57%	4.45%	3.13%	2.66%	4.26%
WMKTX WesMark Tactical Opportunity Fund	4.02%	4.91%	1.42%	0.83%	2.79%	11.76%	0.74%	3.72%	0.57%	2.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both WMKTX and COTZX in my portfolio?

WMKTX and COTZX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WMKTX or COTZX?

WMKTX has higher volatility (2.42%) compared to COTZX (1.60%). In terms of maximum drawdown, WMKTX dropped -28.48% vs COTZX's -47.48%.

Which has better risk-adjusted returns?

COTZX currently has the higher Sharpe Ratio (2.57 vs 2.36), 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.