ESIIX vs. BSIIX

Last updated Jun 23, 2026

ESIIX (Eaton Vance Strategic Income Fund Class I) and BSIIX (BlackRock Strategic Income Opportunities Fund Class I) are both mutual funds - ESIIX is a Multisector Bonds fund actively managed by Eaton Vance, while BSIIX is a Total Bond Market fund managed by BlackRock. Over the past 10 years, ESIIX returned 5.23%/yr vs 3.85%/yr for BSIIX. At a 0.50 correlation, their price movements are largely independent. ESIIX charges 1.21%/yr vs 0.69%/yr for BSIIX.

Performance

ESIIX vs. BSIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Strategic Income Fund Class I (ESIIX) 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, ESIIX achieves a 2.48% return, which is significantly higher than BSIIX's 2.00% return. Over the past 10 years, ESIIX has outperformed BSIIX with an annualized return of 5.23%, while BSIIX has yielded a comparatively lower 3.85% annualized return.

ESIIX

• 1D: 0.15%
• 1M: 0.89%
• YTD: 2.48%
• 6M: 2.99%
• 1Y: 9.72%
• 3Y*: 8.87%
• 5Y*: 5.49%
• 10Y*: 5.23%

BSIIX

• 1D: -0.10%
• 1M: 1.02%
• 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)

ESIIX vs. BSIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ESIIX Eaton Vance Strategic Income Fund Class I	2.48%	12.46%	6.66%	8.52%	-2.32%	1.59%	7.80%	7.65%	-2.44%	5.16%
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 ESIIX and BSIIX is 0.72, 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	0.72
Correlation (3Y) Calculated over the trailing 3-year period	0.78
Correlation (5Y) Calculated over the trailing 5-year period	0.69
Correlation (10Y) Calculated over the trailing 10-year period	0.55
Correlation (All Time) Calculated using the full available price history since Apr 3, 2009	0.50

Over the past year, ESIIX and BSIIX have become more correlated (0.72) than their long-term average of 0.50, meaning their price movements have been converging.

Return for Risk

ESIIX vs. BSIIX — Risk / Return Rank

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

ESIIX

ESIIX Risk / Return Rank: 93
ESIIX Sharpe Ratio Rank: 98
ESIIX Sortino Ratio Rank: 96
ESIIX Omega Ratio Rank: 96
ESIIX Calmar Ratio Rank: 88
ESIIX Martin Ratio Rank: 87

BSIIX

BSIIX Risk / Return Rank: 68
BSIIX Sharpe Ratio Rank: 77
BSIIX Sortino Ratio Rank: 85
BSIIX Omega Ratio Rank: 82
BSIIX Calmar Ratio Rank: 45
BSIIX Martin Ratio Rank: 49

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.

ESIIX vs. BSIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Strategic Income Fund Class I (ESIIX) 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.

	ESIIX	BSIIX	Difference
Sharpe ratio: Return per unit of total volatility	3.47	2.36	+1.11
Sortino ratio: Return per unit of downside risk	5.07	3.73	+1.34
Omega ratio: Gain probability vs. loss probability	1.80	1.50	+0.30
Calmar ratio: Return relative to maximum drawdown	4.07	2.46	+1.62
Martin ratio: Return relative to average drawdown	15.36	9.49	+5.86

ESIIX vs. BSIIX - Sharpe Ratio Comparison

The current ESIIX Sharpe Ratio is 3.47, which is higher than the BSIIX Sharpe Ratio of 2.36. The chart below compares the historical Sharpe Ratios of ESIIX 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

ESIIX vs. BSIIX - Drawdown Comparison

The maximum ESIIX drawdown since its inception was -26.87%, which is greater than BSIIX's maximum drawdown of -18.76%. Use the drawdown chart below to compare losses from any high point for ESIIX and BSIIX.

Drawdown Indicators

	ESIIX	BSIIX	Difference
Max Drawdown Largest peak-to-trough decline	-26.87%	-18.76%	-8.11%
Max Drawdown (1Y) Largest decline over 1 year	-2.44%	-2.84%	+0.40%
Max Drawdown (3Y) Largest decline over 3 years	-2.46%	-2.84%	+0.38%
Max Drawdown (5Y) Largest decline over 5 years	-6.18%	-9.13%	+2.95%
Max Drawdown (10Y) Largest decline over 10 years	-12.25%	-9.91%	-2.34%
Current Drawdown Current decline from peak	-0.29%	-0.31%	+0.02%
Average Drawdown Average peak-to-trough decline	-4.71%	-1.80%	-2.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.64%	0.73%	-0.09%

Volatility

ESIIX vs. BSIIX - Volatility Comparison

Eaton Vance Strategic Income Fund Class I (ESIIX) and BlackRock Strategic Income Opportunities Fund Class I (BSIIX) have volatilities of 0.96% and 0.92%, 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

	ESIIX	BSIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.96%	0.92%	+0.04%
Volatility (6M) Calculated over the trailing 6-month period	2.30%	2.37%	-0.07%
Volatility (1Y) Calculated over the trailing 1-year period	2.86%	2.96%	-0.10%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.20%	3.65%	-0.45%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.17%	3.15%	+0.02%

ESIIX vs. BSIIX - Expense Ratio Comparison

ESIIX has a 1.21% expense ratio, which is higher than BSIIX's 0.69% expense ratio.

Dividends

ESIIX vs. BSIIX - Dividend Comparison

ESIIX's dividend yield for the trailing twelve months is around 7.37%, 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%
ESIIX Eaton Vance Strategic Income Fund Class I	7.37%	7.01%	7.23%	7.19%	5.82%	4.57%	4.44%	5.29%	4.25%	3.95%	4.18%	4.59%

Frequently Asked Questions

Can I hold both ESIIX and BSIIX in my portfolio?

ESIIX and BSIIX have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ESIIX or BSIIX?

ESIIX has higher volatility (0.96%) compared to BSIIX (0.92%). In terms of maximum drawdown, ESIIX dropped -26.87% vs BSIIX's -18.76%.

Which has better risk-adjusted returns?

ESIIX currently has the higher Sharpe Ratio (3.47 vs 2.36), 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.