WMKGX vs. VPMCX

Last updated Jun 4, 2026

WMKGX (WesMark Large Company Fund) and VPMCX (Vanguard PRIMECAP Fund Investor Shares) are both Large Cap Growth Equities funds. Over the past 10 years, WMKGX returned 14.15%/yr vs 17.57%/yr for VPMCX. Their correlation of 0.90 suggests significant overlap in exposure. WMKGX charges 1.12%/yr vs 0.38%/yr for VPMCX.

Performance

WMKGX vs. VPMCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WesMark Large Company Fund (WMKGX) and Vanguard PRIMECAP Fund Investor Shares (VPMCX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WMKGX achieves a 14.05% return, which is significantly lower than VPMCX's 25.40% return. Over the past 10 years, WMKGX has underperformed VPMCX with an annualized return of 14.15%, while VPMCX has yielded a comparatively higher 17.57% annualized return.

WMKGX

• 1D: 0.52%
• 1M: 8.17%
• YTD: 14.05%
• 6M: 13.59%
• 1Y: 35.47%
• 3Y*: 21.86%
• 5Y*: 11.77%
• 10Y*: 14.15%

VPMCX

• 1D: 0.35%
• 1M: 12.86%
• YTD: 25.40%
• 6M: 26.79%
• 1Y: 58.79%
• 3Y*: 28.00%
• 5Y*: 16.44%
• 10Y*: 17.57%

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

WMKGX vs. VPMCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WMKGX WesMark Large Company Fund	14.05%	16.60%	21.35%	21.94%	-21.71%	25.97%	26.40%	26.58%	-6.36%	24.23%
VPMCX Vanguard PRIMECAP Fund Investor Shares	25.40%	29.60%	13.23%	28.16%	-15.22%	21.64%	17.16%	27.78%	-1.99%	28.17%

Correlation

The correlation between WMKGX and VPMCX is 0.85, 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	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Mar 13, 1997	0.90

The correlation between WMKGX and VPMCX has been stable across timeframes, ranging from 0.85 to 0.91 - a consistent structural relationship.

Return for Risk

WMKGX vs. VPMCX — Risk / Return Rank

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

WMKGX

WMKGX Risk / Return Rank: 74
WMKGX Sharpe Ratio Rank: 82
WMKGX Sortino Ratio Rank: 72
WMKGX Omega Ratio Rank: 71
WMKGX Calmar Ratio Rank: 71
WMKGX Martin Ratio Rank: 75

VPMCX

VPMCX Risk / Return Rank: 94
VPMCX Sharpe Ratio Rank: 97
VPMCX Sortino Ratio Rank: 95
VPMCX Omega Ratio Rank: 91
VPMCX Calmar Ratio Rank: 93
VPMCX Martin Ratio Rank: 96

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.

WMKGX vs. VPMCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WesMark Large Company Fund (WMKGX) and Vanguard PRIMECAP Fund Investor Shares (VPMCX). 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.

	WMKGX	VPMCX	Difference
Sharpe ratio Return per unit of total volatility	2.66	3.75	-1.09
Sortino ratio Return per unit of downside risk	3.55	5.04	-1.50
Omega ratio Gain probability vs. loss probability	1.48	1.65	-0.18
Calmar ratio Return relative to maximum drawdown	3.28	5.12	-1.84
Martin ratio Return relative to average drawdown	14.11	23.59	-9.48
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WMKGX vs. VPMCX - Sharpe Ratio Comparison

The current WMKGX Sharpe Ratio is 2.66, which is comparable to the VPMCX Sharpe Ratio of 3.75. The chart below compares the historical Sharpe Ratios of WMKGX and VPMCX, 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

	WMKGX	VPMCX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.66	3.75	-1.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.63	0.91	-0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.92	-0.18
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.81	-0.33

Drawdowns

WMKGX vs. VPMCX - Drawdown Comparison

The maximum WMKGX drawdown since its inception was -49.55%, roughly equal to the maximum VPMCX drawdown of -50.45%. Use the drawdown chart below to compare losses from any high point for WMKGX and VPMCX.

Drawdown Indicators

	WMKGX	VPMCX	Difference
Max Drawdown Largest peak-to-trough decline	-49.55%	-50.45%	+0.90%
Max Drawdown (1Y) Largest decline over 1 year	-11.06%	-11.73%	+0.67%
Max Drawdown (3Y) Largest decline over 3 years	-21.35%	-20.56%	-0.79%
Max Drawdown (5Y) Largest decline over 5 years	-31.06%	-25.25%	-5.81%
Max Drawdown (10Y) Largest decline over 10 years	-34.60%	-32.65%	-1.95%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-9.66%	-7.41%	-2.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.57%	2.54%	+0.03%

Volatility

WMKGX vs. VPMCX - Volatility Comparison

The current volatility for WesMark Large Company Fund (WMKGX) is 3.40%, while Vanguard PRIMECAP Fund Investor Shares (VPMCX) has a volatility of 6.18%. This indicates that WMKGX experiences smaller price fluctuations and is considered to be less risky than VPMCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WMKGX	VPMCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.40%	6.18%	-2.78%
Volatility (6M) Calculated over the trailing 6-month period	10.36%	12.85%	-2.49%
Volatility (1Y) Calculated over the trailing 1-year period	13.65%	16.02%	-2.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.65%	18.26%	+0.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.24%	19.19%	+0.05%

WMKGX vs. VPMCX - Expense Ratio Comparison

WMKGX has a 1.12% expense ratio, which is higher than VPMCX's 0.38% expense ratio.

Dividends

WMKGX vs. VPMCX - Dividend Comparison

WMKGX's dividend yield for the trailing twelve months is around 18.59%, more than VPMCX's 13.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VPMCX Vanguard PRIMECAP Fund Investor Shares	13.04%	16.36%	6.62%	7.16%	9.85%	10.08%	9.74%	7.15%	8.32%	4.53%	5.05%	5.91%
WMKGX WesMark Large Company Fund	18.59%	21.23%	14.72%	7.64%	12.78%	7.52%	7.53%	6.49%	11.44%	7.92%	4.76%	3.64%

Frequently Asked Questions

Can I hold both WMKGX and VPMCX in my portfolio?

WMKGX and VPMCX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WMKGX or VPMCX?

VPMCX has higher volatility (6.18%) compared to WMKGX (3.40%). In terms of maximum drawdown, WMKGX dropped -49.55% vs VPMCX's -50.45%.

Which has better risk-adjusted returns?

VPMCX currently has the higher Sharpe Ratio (3.75 vs 2.66), 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.