VWELX vs. AYBLX

Last updated Jun 25, 2026

VWELX (Vanguard Wellington Fund Investor Shares) and AYBLX (Pioneer Balanced ESG Fund) are both Diversified Portfolio funds. Over the past 10 years, VWELX returned 10.21%/yr vs 10.67%/yr for AYBLX. Their correlation of 0.93 suggests significant overlap in exposure. VWELX charges 0.24%/yr vs 0.65%/yr for AYBLX.

Performance

VWELX vs. AYBLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Wellington Fund Investor Shares (VWELX) 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, VWELX achieves a 5.08% return, which is significantly lower than AYBLX's 13.99% return. Both investments have delivered pretty close results over the past 10 years, with VWELX having a 10.21% annualized return and AYBLX not far ahead at 10.67%.

VWELX

• 1D: -0.96%
• 1M: -0.56%
• YTD: 5.08%
• 6M: 4.22%
• 1Y: 16.43%
• 3Y*: 14.70%
• 5Y*: 8.35%
• 10Y*: 10.21%

AYBLX

• 1D: -0.21%
• 1M: 1.64%
• YTD: 13.99%
• 6M: 13.54%
• 1Y: 32.24%
• 3Y*: 17.53%
• 5Y*: 9.58%
• 10Y*: 10.67%

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

VWELX vs. AYBLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VWELX Vanguard Wellington Fund Investor Shares	5.08%	16.54%	14.73%	14.29%	-14.36%	18.99%	10.57%	22.51%	-3.43%	13.98%
AYBLX Pioneer Balanced ESG Fund	13.99%	19.80%	9.64%	15.41%	-14.39%	15.48%	12.92%	22.22%	-4.43%	15.19%

Correlation

The correlation between VWELX and AYBLX is 0.89, 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	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Aug 29, 1997	0.93

The correlation between VWELX and AYBLX has been stable across timeframes, ranging from 0.89 to 0.94 - a consistent structural relationship.

Return for Risk

VWELX vs. AYBLX — Risk / Return Rank

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

VWELX

VWELX Risk / Return Rank: 53
VWELX Sharpe Ratio Rank: 52
VWELX Sortino Ratio Rank: 49
VWELX Omega Ratio Rank: 51
VWELX Calmar Ratio Rank: 50
VWELX Martin Ratio Rank: 63

AYBLX

AYBLX Risk / Return Rank: 95
AYBLX Sharpe Ratio Rank: 97
AYBLX Sortino Ratio Rank: 95
AYBLX Omega Ratio Rank: 90
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.

VWELX vs. AYBLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Wellington Fund Investor Shares (VWELX) 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.

	VWELX	AYBLX	Difference
Sharpe ratio: Return per unit of total volatility	1.95	3.33	-1.39
Sortino ratio: Return per unit of downside risk	2.72	4.68	-1.95
Omega ratio: Gain probability vs. loss probability	1.36	1.62	-0.26
Calmar ratio: Return relative to maximum drawdown	2.58	5.16	-2.58
Martin ratio: Return relative to average drawdown	11.59	24.00	-12.41

VWELX vs. AYBLX - Sharpe Ratio Comparison

The current VWELX Sharpe Ratio is 1.95, which is lower than the AYBLX Sharpe Ratio of 3.33. The chart below compares the historical Sharpe Ratios of VWELX 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

VWELX vs. AYBLX - Drawdown Comparison

The maximum VWELX drawdown since its inception was -36.12%, roughly equal to the maximum AYBLX drawdown of -36.28%. Use the drawdown chart below to compare losses from any high point for VWELX and AYBLX.

Drawdown Indicators

	VWELX	AYBLX	Difference
Max Drawdown Largest peak-to-trough decline	-36.12%	-36.28%	+0.16%
Max Drawdown (1Y) Largest decline over 1 year	-6.78%	-6.41%	-0.37%
Max Drawdown (3Y) Largest decline over 3 years	-11.98%	-13.39%	+1.41%
Max Drawdown (5Y) Largest decline over 5 years	-20.88%	-20.26%	-0.62%
Max Drawdown (10Y) Largest decline over 10 years	-25.33%	-24.24%	-1.09%
Current Drawdown Current decline from peak	-1.90%	-0.52%	-1.38%
Average Drawdown Average peak-to-trough decline	-3.92%	-3.78%	-0.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.51%	1.38%	+0.13%

Volatility

VWELX vs. AYBLX - Volatility Comparison

Vanguard Wellington Fund Investor Shares (VWELX) and Pioneer Balanced ESG Fund (AYBLX) have volatilities of 3.70% and 3.63%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VWELX	AYBLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.70%	3.63%	+0.07%
Volatility (6M) Calculated over the trailing 6-month period	7.37%	7.83%	-0.46%
Volatility (1Y) Calculated over the trailing 1-year period	9.01%	9.95%	-0.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	11.22%	11.13%	+0.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	11.54%	11.33%	+0.21%

VWELX vs. AYBLX - Expense Ratio Comparison

VWELX has a 0.24% expense ratio, which is lower than AYBLX's 0.65% expense ratio.

Dividends

VWELX vs. AYBLX - Dividend Comparison

VWELX's dividend yield for the trailing twelve months is around 11.01%, more than AYBLX's 3.24% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AYBLX Pioneer Balanced ESG Fund	3.24%	3.58%	2.59%	1.76%	3.23%	8.61%	4.12%	6.03%	9.97%	9.42%	2.63%	4.14%
VWELX Vanguard Wellington Fund Investor Shares	11.01%	11.46%	10.76%	6.01%	8.19%	8.64%	7.77%	4.67%	9.49%	5.82%	4.44%	7.03%

Frequently Asked Questions

Can I hold both VWELX and AYBLX in my portfolio?

VWELX and AYBLX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VWELX or AYBLX?

VWELX has higher volatility (3.70%) compared to AYBLX (3.63%). In terms of maximum drawdown, VWELX dropped -36.12% vs AYBLX's -36.28%.

Which has better risk-adjusted returns?

AYBLX currently has the higher Sharpe Ratio (3.33 vs 1.95), 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.