VWINX vs. BSIIX

Last updated Jun 20, 2026

VWINX (Vanguard Wellesley Income Fund Investor Shares) and BSIIX (BlackRock Strategic Income Opportunities Fund Class I) are both mutual funds - VWINX is a Diversified Portfolio fund actively managed by Vanguard, while BSIIX is a Total Bond Market fund managed by BlackRock. Over the past 10 years, VWINX returned 5.77%/yr vs 3.85%/yr for BSIIX. At a 0.40 correlation, their price movements are largely independent. VWINX charges 0.22%/yr vs 0.69%/yr for BSIIX.

Performance

VWINX vs. BSIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Wellesley Income Fund Investor Shares (VWINX) and BlackRock Strategic Income Opportunities Fund Class I (BSIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VWINX achieves a 3.39% return, which is significantly higher than BSIIX's 2.00% return. Over the past 10 years, VWINX has outperformed BSIIX with an annualized return of 5.77%, while BSIIX has yielded a comparatively lower 3.85% annualized return.

VWINX

• 1D: 0.26%
• 1M: 1.12%
• YTD: 3.39%
• 6M: 3.55%
• 1Y: 10.49%
• 3Y*: 8.40%
• 5Y*: 4.24%
• 10Y*: 5.77%

BSIIX

• 1D: -0.10%
• 1M: 1.23%
• YTD: 2.00%
• 6M: 2.57%
• 1Y: 6.95%
• 3Y*: 6.84%
• 5Y*: 3.01%
• 10Y*: 3.85%

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

VWINX vs. BSIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VWINX Vanguard Wellesley Income Fund Investor Shares	3.39%	10.98%	5.86%	6.99%	-9.09%	8.48%	8.44%	16.39%	-2.54%	9.29%
BSIIX BlackRock Strategic Income Opportunities Fund Class I	2.00%	8.59%	5.22%	6.18%	-6.14%	0.80%	7.22%	7.65%	-0.42%	4.89%

Correlation

The correlation between VWINX and BSIIX is 0.63, 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	0.63
Correlation (3Y) Calculated over the trailing 3-year period	0.63
Correlation (5Y) Calculated over the trailing 5-year period	0.58
Correlation (10Y) Calculated over the trailing 10-year period	0.50
Correlation (All Time) Calculated using the full available price history since Feb 7, 2008	0.40

Over the past year, VWINX and BSIIX have become more correlated (0.63) than their long-term average of 0.40, meaning their price movements have been converging.

Return for Risk

VWINX vs. BSIIX — Risk / Return Rank

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

VWINX

VWINX Risk / Return Rank: 56
VWINX Sharpe Ratio Rank: 60
VWINX Sortino Ratio Rank: 63
VWINX Omega Ratio Rank: 58
VWINX Calmar Ratio Rank: 51
VWINX Martin Ratio Rank: 51

BSIIX

BSIIX Risk / Return Rank: 69
BSIIX Sharpe Ratio Rank: 79
BSIIX Sortino Ratio Rank: 86
BSIIX Omega Ratio Rank: 83
BSIIX Calmar Ratio Rank: 48
BSIIX Martin Ratio Rank: 50

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. BSIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Wellesley Income Fund Investor Shares (VWINX) and BlackRock Strategic Income Opportunities Fund Class I (BSIIX). 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.

	VWINX	BSIIX	Difference
Sharpe ratio: Return per unit of total volatility	2.03	2.36	-0.33
Sortino ratio: Return per unit of downside risk	2.92	3.73	-0.81
Omega ratio: Gain probability vs. loss probability	1.37	1.50	-0.13
Calmar ratio: Return relative to maximum drawdown	2.53	2.46	+0.08
Martin ratio: Return relative to average drawdown	9.52	9.49	+0.02

VWINX vs. BSIIX - Sharpe Ratio Comparison

The current VWINX Sharpe Ratio is 2.03, which is comparable to the BSIIX Sharpe Ratio of 2.36. The chart below compares the historical Sharpe Ratios of VWINX and BSIIX, 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

VWINX vs. BSIIX - Drawdown Comparison

The maximum VWINX drawdown since its inception was -21.72%, which is greater than BSIIX's maximum drawdown of -18.76%. Use the drawdown chart below to compare losses from any high point for VWINX and BSIIX.

Drawdown Indicators

	VWINX	BSIIX	Difference
Max Drawdown Largest peak-to-trough decline	-21.72%	-18.76%	-2.96%
Max Drawdown (1Y) Largest decline over 1 year	-4.16%	-2.84%	-1.32%
Max Drawdown (3Y) Largest decline over 3 years	-6.98%	-2.84%	-4.14%
Max Drawdown (5Y) Largest decline over 5 years	-15.30%	-9.13%	-6.17%
Max Drawdown (10Y) Largest decline over 10 years	-17.43%	-9.91%	-7.52%
Current Drawdown Current decline from peak	-0.35%	-0.31%	-0.04%
Average Drawdown Average peak-to-trough decline	-2.63%	-1.80%	-0.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.10%	0.73%	+0.37%

Volatility

VWINX vs. BSIIX - Volatility Comparison

Vanguard Wellesley Income Fund Investor Shares (VWINX) has a higher volatility of 1.63% compared to BlackRock Strategic Income Opportunities Fund Class I (BSIIX) at 0.92%. This indicates that VWINX's price experiences larger fluctuations and is considered to be riskier than BSIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VWINX	BSIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.63%	0.92%	+0.71%
Volatility (6M) Calculated over the trailing 6-month period	3.92%	2.37%	+1.55%
Volatility (1Y) Calculated over the trailing 1-year period	5.20%	2.96%	+2.24%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.99%	3.65%	+3.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.93%	3.15%	+3.78%

VWINX vs. BSIIX - Expense Ratio Comparison

VWINX has a 0.22% expense ratio, which is lower than BSIIX's 0.69% expense ratio.

Dividends

VWINX vs. BSIIX - Dividend Comparison

VWINX's dividend yield for the trailing twelve months is around 8.64%, more than BSIIX's 5.15% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BSIIX BlackRock Strategic Income Opportunities Fund Class I	5.15%	5.07%	4.75%	3.33%	3.58%	2.98%	2.92%	3.54%	3.32%	3.45%	2.91%	3.19%
VWINX Vanguard Wellesley Income Fund Investor Shares	8.64%	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 BSIIX in my portfolio?

VWINX and BSIIX have a correlation of 0.63, 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 BSIIX?

VWINX has higher volatility (1.63%) compared to BSIIX (0.92%). In terms of maximum drawdown, VWINX dropped -21.72% vs BSIIX's -18.76%.

Which has better risk-adjusted returns?

BSIIX currently has the higher Sharpe Ratio (2.36 vs 2.03), 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.