VWINX vs. SPAB

Last updated Jun 4, 2026

VWINX (Vanguard Wellesley Income Fund Investor Shares) and SPAB (SPDR Portfolio Aggregate Bond ETF) are both funds - VWINX is a Diversified Portfolio fund managed by Vanguard, while SPAB is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Bond Index. Over the past 10 years, VWINX returned 5.81%/yr vs 1.54%/yr for SPAB. At a 0.29 correlation, their price movements are largely independent. VWINX charges 0.23%/yr vs 0.03%/yr for SPAB.

Performance

VWINX vs. SPAB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Wellesley Income Fund Investor Shares (VWINX) and SPDR Portfolio Aggregate Bond ETF (SPAB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VWINX achieves a 3.55% return, which is significantly higher than SPAB's 0.29% return. Over the past 10 years, VWINX has outperformed SPAB with an annualized return of 5.81%, while SPAB has yielded a comparatively lower 1.54% annualized return.

VWINX

• 1D: 0.31%
• 1M: 1.24%
• YTD: 3.55%
• 6M: 3.53%
• 1Y: 11.32%
• 3Y*: 8.86%
• 5Y*: 4.14%
• 10Y*: 5.81%

SPAB

• 1D: -0.12%
• 1M: 0.31%
• YTD: 0.29%
• 6M: 0.14%
• 1Y: 5.24%
• 3Y*: 3.93%
• 5Y*: 0.07%
• 10Y*: 1.54%

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

VWINX vs. SPAB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VWINX Vanguard Wellesley Income Fund Investor Shares	3.55%	10.98%	5.86%	6.99%	-9.09%	8.48%	8.44%	16.39%	-2.54%	9.29%
SPAB SPDR Portfolio Aggregate Bond ETF	0.29%	7.25%	1.25%	5.56%	-13.04%	-1.77%	7.39%	8.67%	-0.18%	3.71%

Correlation

The correlation between VWINX and SPAB is 0.67, 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	0.67
Correlation (3Y) Calculated over the trailing 3-year period	0.68
Correlation (5Y) Calculated over the trailing 5-year period	0.64
Correlation (10Y) Calculated over the trailing 10-year period	0.48
Correlation (All Time) Calculated using the full available price history since May 31, 2007	0.29

Over the past year, VWINX and SPAB have become more correlated (0.67) than their long-term average of 0.29, meaning their price movements have been converging.

Return for Risk

VWINX vs. SPAB — Risk / Return Rank

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

VWINX

VWINX Risk / Return Rank: 57
VWINX Sharpe Ratio Rank: 61
VWINX Sortino Ratio Rank: 62
VWINX Omega Ratio Rank: 58
VWINX Calmar Ratio Rank: 54
VWINX Martin Ratio Rank: 52

SPAB

SPAB Risk / Return Rank: 38
SPAB Sharpe Ratio Rank: 38
SPAB Sortino Ratio Rank: 41
SPAB Omega Ratio Rank: 37
SPAB Calmar Ratio Rank: 38
SPAB Martin Ratio Rank: 36

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.

VWINX vs. SPAB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Wellesley Income Fund Investor Shares (VWINX) and SPDR Portfolio Aggregate Bond ETF (SPAB). 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.

	VWINX	SPAB	Difference
Sharpe ratio Return per unit of total volatility	2.29	1.40	+0.90
Sortino ratio Return per unit of downside risk	3.30	2.11	+1.19
Omega ratio Gain probability vs. loss probability	1.42	1.25	+0.18
Calmar ratio Return relative to maximum drawdown	2.81	1.92	+0.89
Martin ratio Return relative to average drawdown	10.57	5.72	+4.85
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VWINX vs. SPAB - Sharpe Ratio Comparison

The current VWINX Sharpe Ratio is 2.29, which is higher than the SPAB Sharpe Ratio of 1.40. The chart below compares the historical Sharpe Ratios of VWINX and SPAB, 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

	VWINX	SPAB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.29	1.40	+0.90
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.60	0.01	+0.58
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.84	0.28	+0.56
Sharpe Ratio (All Time) Calculated using the full available price history	1.08	0.50	+0.58

Drawdowns

VWINX vs. SPAB - Drawdown Comparison

The maximum VWINX drawdown since its inception was -21.72%, which is greater than SPAB's maximum drawdown of -18.56%. Use the drawdown chart below to compare losses from any high point for VWINX and SPAB.

Drawdown Indicators

	VWINX	SPAB	Difference
Max Drawdown Largest peak-to-trough decline	-21.72%	-18.56%	-3.16%
Max Drawdown (1Y) Largest decline over 1 year	-4.16%	-2.74%	-1.42%
Max Drawdown (3Y) Largest decline over 3 years	-6.98%	-6.08%	-0.90%
Max Drawdown (5Y) Largest decline over 5 years	-15.30%	-17.96%	+2.66%
Max Drawdown (10Y) Largest decline over 10 years	-17.43%	-18.56%	+1.13%
Current Drawdown Current decline from peak	0.00%	-2.27%	+2.27%
Average Drawdown Average peak-to-trough decline	-2.63%	-3.08%	+0.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.10%	0.92%	+0.18%

Volatility

VWINX vs. SPAB - Volatility Comparison

Vanguard Wellesley Income Fund Investor Shares (VWINX) has a higher volatility of 1.64% compared to SPDR Portfolio Aggregate Bond ETF (SPAB) at 1.15%. This indicates that VWINX's price experiences larger fluctuations and is considered to be riskier than SPAB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VWINX	SPAB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.64%	1.15%	+0.49%
Volatility (6M) Calculated over the trailing 6-month period	3.89%	2.57%	+1.32%
Volatility (1Y) Calculated over the trailing 1-year period	5.09%	3.77%	+1.32%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.97%	5.92%	+1.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.92%	5.54%	+1.38%

VWINX vs. SPAB - Expense Ratio Comparison

VWINX has a 0.23% expense ratio, which is higher than SPAB's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

VWINX vs. SPAB - Dividend Comparison

VWINX's dividend yield for the trailing twelve months is around 7.68%, more than SPAB's 4.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPAB SPDR Portfolio Aggregate Bond ETF	4.05%	3.97%	3.86%	3.34%	2.59%	2.11%	2.43%	2.92%	2.96%	2.67%	2.63%	2.59%
VWINX Vanguard Wellesley Income Fund Investor Shares	7.68%	7.86%	6.61%	4.73%	7.67%	6.03%	4.30%	3.94%	7.56%	3.20%	4.00%	5.60%

Frequently Asked Questions

Can I hold both VWINX and SPAB in my portfolio?

VWINX and SPAB have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VWINX or SPAB?

VWINX has higher volatility (1.64%) compared to SPAB (1.15%). In terms of maximum drawdown, VWINX dropped -21.72% vs SPAB's -18.56%.

Which has better risk-adjusted returns?

VWINX currently has the higher Sharpe Ratio (2.29 vs 1.40), 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.