WMBLX vs. AYBLX

Last updated Jun 25, 2026

WMBLX (WesMark Balanced Fund) and AYBLX (Pioneer Balanced ESG Fund) are both Diversified Portfolio funds. Over the past 10 years, WMBLX returned 7.49%/yr vs 10.57%/yr for AYBLX. Their correlation of 0.89 suggests significant overlap in exposure. WMBLX charges 1.24%/yr vs 0.65%/yr for AYBLX.

Performance

WMBLX vs. AYBLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WesMark Balanced Fund (WMBLX) and Pioneer Balanced ESG Fund (AYBLX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WMBLX achieves a 8.58% return, which is significantly lower than AYBLX's 12.96% return. Over the past 10 years, WMBLX has underperformed AYBLX with an annualized return of 7.49%, while AYBLX has yielded a comparatively higher 10.57% annualized return.

WMBLX

• 1D: -0.41%
• 1M: 0.46%
• YTD: 8.58%
• 6M: 7.86%
• 1Y: 18.33%
• 3Y*: 11.41%
• 5Y*: 6.27%
• 10Y*: 7.49%

AYBLX

• 1D: -0.90%
• 1M: 0.72%
• YTD: 12.96%
• 6M: 12.26%
• 1Y: 29.79%
• 3Y*: 17.17%
• 5Y*: 9.27%
• 10Y*: 10.57%

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

WMBLX vs. AYBLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WMBLX WesMark Balanced Fund	8.58%	10.81%	9.28%	4.97%	-7.22%	15.85%	2.82%	20.32%	-4.61%	10.77%
AYBLX Pioneer Balanced ESG Fund	12.96%	19.80%	9.64%	15.41%	-14.39%	15.48%	12.92%	22.22%	-4.43%	15.19%

Correlation

The correlation between WMBLX and AYBLX 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	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Mar 24, 1998	0.89

The correlation between WMBLX and AYBLX has been stable across timeframes, ranging from 0.82 to 0.89 - a consistent structural relationship.

Return for Risk

WMBLX vs. AYBLX — Risk / Return Rank

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

WMBLX

WMBLX Risk / Return Rank: 87
WMBLX Sharpe Ratio Rank: 88
WMBLX Sortino Ratio Rank: 88
WMBLX Omega Ratio Rank: 84
WMBLX Calmar Ratio Rank: 87
WMBLX Martin Ratio Rank: 89

AYBLX

AYBLX Risk / Return Rank: 94
AYBLX Sharpe Ratio Rank: 97
AYBLX Sortino Ratio Rank: 94
AYBLX Omega Ratio Rank: 89
AYBLX Calmar Ratio Rank: 94
AYBLX Martin Ratio Rank: 97

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.

WMBLX vs. AYBLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WesMark Balanced Fund (WMBLX) and Pioneer Balanced ESG Fund (AYBLX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	WMBLX	AYBLX	Difference
Sharpe ratio: Return per unit of total volatility	2.57	3.13	-0.56
Sortino ratio: Return per unit of downside risk	3.77	4.40	-0.63
Omega ratio: Gain probability vs. loss probability	1.48	1.57	-0.09
Calmar ratio: Return relative to maximum drawdown	3.83	4.87	-1.03
Martin ratio: Return relative to average drawdown	15.41	22.57	-7.16

WMBLX vs. AYBLX - Sharpe Ratio Comparison

The current WMBLX Sharpe Ratio is 2.57, which is comparable to the AYBLX Sharpe Ratio of 3.13. The chart below compares the historical Sharpe Ratios of WMBLX and AYBLX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

WMBLX vs. AYBLX - Drawdown Comparison

The maximum WMBLX drawdown since its inception was -35.88%, roughly equal to the maximum AYBLX drawdown of -36.28%. Use the drawdown chart below to compare losses from any high point for WMBLX and AYBLX.

Drawdown Indicators

	WMBLX	AYBLX	Difference
Max Drawdown Largest peak-to-trough decline	-35.88%	-36.28%	+0.40%
Max Drawdown (1Y) Largest decline over 1 year	-4.97%	-6.41%	+1.44%
Max Drawdown (3Y) Largest decline over 3 years	-11.57%	-13.39%	+1.82%
Max Drawdown (5Y) Largest decline over 5 years	-17.77%	-20.26%	+2.49%
Max Drawdown (10Y) Largest decline over 10 years	-23.30%	-24.24%	+0.94%
Current Drawdown Current decline from peak	-1.45%	-1.42%	-0.03%
Average Drawdown Average peak-to-trough decline	-6.37%	-3.78%	-2.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.23%	1.38%	-0.15%

Volatility

WMBLX vs. AYBLX - Volatility Comparison

The current volatility for WesMark Balanced Fund (WMBLX) is 2.90%, while Pioneer Balanced ESG Fund (AYBLX) has a volatility of 3.76%. This indicates that WMBLX experiences smaller price fluctuations and is considered to be less risky than AYBLX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WMBLX	AYBLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.90%	3.76%	-0.86%
Volatility (6M) Calculated over the trailing 6-month period	5.90%	7.89%	-1.99%
Volatility (1Y) Calculated over the trailing 1-year period	7.42%	9.98%	-2.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.25%	11.14%	-0.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.85%	11.33%	-0.48%

WMBLX vs. AYBLX - Expense Ratio Comparison

WMBLX has a 1.24% expense ratio, which is higher than AYBLX's 0.65% expense ratio.

Dividends

WMBLX vs. AYBLX - Dividend Comparison

WMBLX's dividend yield for the trailing twelve months is around 7.03%, more than AYBLX's 3.27% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AYBLX Pioneer Balanced ESG Fund	3.27%	3.58%	2.59%	1.76%	3.23%	8.61%	4.12%	6.03%	9.97%	9.42%	2.63%	4.14%
WMBLX WesMark Balanced Fund	7.03%	7.70%	9.82%	4.70%	3.78%	6.03%	1.63%	6.20%	5.83%	4.32%	3.80%	6.73%

Frequently Asked Questions

Can I hold both WMBLX and AYBLX in my portfolio?

WMBLX and AYBLX 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, WMBLX or AYBLX?

AYBLX has higher volatility (3.76%) compared to WMBLX (2.90%). In terms of maximum drawdown, WMBLX dropped -35.88% vs AYBLX's -36.28%.

Which has better risk-adjusted returns?

AYBLX currently has the higher Sharpe Ratio (3.13 vs 2.57), 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.