EVSB vs. OPER

Last updated Jun 4, 2026

EVSB (Eaton Vance Ultra-Short Income ETF) and OPER (ClearShares Ultra-Short Maturity ETF) are both Ultrashort Bond funds. EVSB is actively managed, while OPER is passively managed. Over the past year, EVSB returned 4.71% vs 4.07% for OPER. At a 0.10 correlation, their price movements are largely independent. EVSB charges 0.17%/yr vs 0.20%/yr for OPER.

Performance

EVSB vs. OPER - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Ultra-Short Income ETF (EVSB) and ClearShares Ultra-Short Maturity ETF (OPER). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EVSB achieves a 1.66% return, which is significantly higher than OPER's 1.55% return.

EVSB

• 1D: -0.01%
• 1M: 0.40%
• YTD: 1.66%
• 6M: 2.00%
• 1Y: 4.71%
• 3Y*: —
• 5Y*: —
• 10Y*: —

OPER

• 1D: 0.01%
• 1M: 0.34%
• YTD: 1.55%
• 6M: 1.88%
• 1Y: 4.07%
• 3Y*: 4.80%
• 5Y*: 3.65%
• 10Y*: —

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

EVSB vs. OPER - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
EVSB Eaton Vance Ultra-Short Income ETF	1.66%	5.12%	6.04%	1.84%
OPER ClearShares Ultra-Short Maturity ETF	1.55%	4.37%	5.34%	1.05%

Correlation

The correlation between EVSB and OPER is 0.07, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.07
Correlation (All Time) Calculated using the full available price history since Oct 20, 2023	0.10

Return for Risk

EVSB vs. OPER — Risk / Return Rank

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

EVSB

EVSB Risk / Return Rank: 99
EVSB Sharpe Ratio Rank: 98
EVSB Sortino Ratio Rank: 99
EVSB Omega Ratio Rank: 99
EVSB Calmar Ratio Rank: 98
EVSB Martin Ratio Rank: 99

OPER

OPER Risk / Return Rank: 100
OPER Sharpe Ratio Rank: 100
OPER Sortino Ratio Rank: 100
OPER Omega Ratio Rank: 100
OPER Calmar Ratio Rank: 100
OPER Martin Ratio Rank: 100

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.

EVSB vs. OPER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Ultra-Short Income ETF (EVSB) and ClearShares Ultra-Short Maturity ETF (OPER). 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.

	EVSB	OPER	Difference
Sharpe ratio: Return per unit of total volatility	6.11	15.45	-9.34
Sortino ratio: Return per unit of downside risk	10.72	43.90	-33.18
Omega ratio: Gain probability vs. loss probability	2.76	13.38	-10.62
Calmar ratio: Return relative to maximum drawdown	18.60	61.29	-42.68
Martin ratio: Return relative to average drawdown	109.03	519.55	-410.51
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

EVSB vs. OPER - Sharpe Ratio Comparison

The current EVSB Sharpe Ratio is 6.11, which is lower than the OPER Sharpe Ratio of 15.45. The chart below compares the historical Sharpe Ratios of EVSB and OPER, 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

	EVSB	OPER	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	6.11	15.45	-9.34
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	11.47	—
Sharpe Ratio (All Time) Calculated using the full available price history	6.94	2.28	+4.66

Drawdowns

EVSB vs. OPER - Drawdown Comparison

The maximum EVSB drawdown since its inception was -0.31%, smaller than the maximum OPER drawdown of -2.33%. Use the drawdown chart below to compare losses from any high point for EVSB and OPER.

Drawdown Indicators

	EVSB	OPER	Difference
Max Drawdown Largest peak-to-trough decline	-0.31%	-2.33%	+2.02%
Max Drawdown (1Y) Largest decline over 1 year	-0.25%	-0.07%	-0.18%
Max Drawdown (3Y) Largest decline over 3 years	—	-0.11%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-0.13%	—
Current Drawdown Current decline from peak	-0.05%	0.00%	-0.05%
Average Drawdown Average peak-to-trough decline	-0.02%	-0.16%	+0.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.04%	0.01%	+0.03%

Volatility

EVSB vs. OPER - Volatility Comparison

Eaton Vance Ultra-Short Income ETF (EVSB) has a higher volatility of 0.19% compared to ClearShares Ultra-Short Maturity ETF (OPER) at 0.10%. This indicates that EVSB's price experiences larger fluctuations and is considered to be riskier than OPER based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EVSB	OPER	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.19%	0.10%	+0.09%
Volatility (6M) Calculated over the trailing 6-month period	0.51%	0.20%	+0.31%
Volatility (1Y) Calculated over the trailing 1-year period	0.77%	0.26%	+0.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.82%	0.32%	+0.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.82%	1.23%	-0.41%

EVSB vs. OPER - Expense Ratio Comparison

EVSB has a 0.17% expense ratio, which is lower than OPER's 0.20% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

EVSB vs. OPER - Dividend Comparison

EVSB's dividend yield for the trailing twelve months is around 4.63%, more than OPER's 4.09% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
EVSB Eaton Vance Ultra-Short Income ETF	4.63%	4.63%	5.18%	1.21%	0.00%	0.00%	0.00%	0.00%	0.00%
OPER ClearShares Ultra-Short Maturity ETF	4.09%	4.32%	5.21%	5.03%	1.71%	0.36%	0.64%	2.08%	0.89%

Frequently Asked Questions

Can I hold both EVSB and OPER in my portfolio?

EVSB and OPER have a correlation of 0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EVSB or OPER?

EVSB has higher volatility (0.19%) compared to OPER (0.10%). In terms of maximum drawdown, EVSB dropped -0.31% vs OPER's -2.33%.

Which ETF is better, EVSB or OPER?

On 1-year performance, EVSB leads with 4.71% vs 4.07% for OPER. On fees, EVSB is cheaper at 0.17% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, EVSB or OPER?

Over the 1-year period, EVSB has performed better with a 4.71% return vs 4.07%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, EVSB or OPER?

EVSB is cheaper with a 0.17% expense ratio, compared with 0.20% for OPER.

Which ETF pays a higher dividend yield, EVSB or OPER?

EVSB has the higher dividend yield at 4.63%, compared with 4.09% for OPER.

What is the main difference between EVSB and OPER?

They also come from different issuers: Eaton Vance and ClearShares. Their fees differ too: 0.17% for EVSB and 0.20% for OPER.

Which has better risk-adjusted returns?

OPER currently has the higher Sharpe Ratio (15.45 vs 6.11), 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.