EVSB vs. BUCK

Last updated Jun 4, 2026

EVSB (Eaton Vance Ultra-Short Income ETF) and BUCK (Simplify Treasury Option Income ETF) are both exchange-traded funds - EVSB is a Ultrashort Bond fund actively managed by Eaton Vance, while BUCK is a Government Bonds fund actively managed by Simplify. Both are actively managed. Over the past year, EVSB returned 4.71% vs 7.95% for BUCK. At a correlation of -0.01, they often move in opposite directions. EVSB charges 0.17%/yr vs 0.35%/yr for BUCK.

Performance

EVSB vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Ultra-Short Income ETF (EVSB) and Simplify Treasury Option Income ETF (BUCK). 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 lower than BUCK's 1.90% return.

EVSB

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

BUCK

• 1D: 0.02%
• 1M: 0.38%
• YTD: 1.90%
• 6M: 2.09%
• 1Y: 7.95%
• 3Y*: 5.27%
• 5Y*: —
• 10Y*: —

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

EVSB vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
EVSB Eaton Vance Ultra-Short Income ETF	1.66%	5.12%	6.04%	1.84%
BUCK Simplify Treasury Option Income ETF	1.90%	4.13%	7.25%	0.54%

Correlation

The correlation between EVSB and BUCK is -0.00, 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	-0.00
Correlation (All Time) Calculated using the full available price history since Oct 20, 2023	-0.01

EVSB vs. BUCK - Sectors Allocation Comparison

Sectors	EVSB	BUCK
Financial Services	0.3%	100.0%
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Energy	-	-
Healthcare	-	-
Industrials	-	-
Real Estate	-	-
Technology	-	-
Utilities	-	-

Return for Risk

EVSB vs. BUCK — 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

BUCK

BUCK Risk / Return Rank: 87
BUCK Sharpe Ratio Rank: 77
BUCK Sortino Ratio Rank: 84
BUCK Omega Ratio Rank: 86
BUCK Calmar Ratio Rank: 92
BUCK Martin Ratio Rank: 95

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. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Ultra-Short Income ETF (EVSB) and Simplify Treasury Option Income ETF (BUCK). 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	BUCK	Difference
Sharpe ratio: Return per unit of total volatility	6.11	2.54	+3.57
Sortino ratio: Return per unit of downside risk	10.72	3.83	+6.89
Omega ratio: Gain probability vs. loss probability	2.76	1.54	+1.21
Calmar ratio: Return relative to maximum drawdown	18.60	6.11	+12.50
Martin ratio: Return relative to average drawdown	109.03	32.31	+76.72
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. BUCK - Sharpe Ratio Comparison

The current EVSB Sharpe Ratio is 6.11, which is higher than the BUCK Sharpe Ratio of 2.54. The chart below compares the historical Sharpe Ratios of EVSB and BUCK, 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	BUCK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	6.11	2.54	+3.57
Sharpe Ratio (All Time) Calculated using the full available price history	6.94	1.47	+5.47

Drawdowns

EVSB vs. BUCK - Drawdown Comparison

The maximum EVSB drawdown since its inception was -0.31%, smaller than the maximum BUCK drawdown of -5.43%. Use the drawdown chart below to compare losses from any high point for EVSB and BUCK.

Drawdown Indicators

	EVSB	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	-0.31%	-5.43%	+5.12%
Max Drawdown (1Y) Largest decline over 1 year	-0.25%	-1.31%	+1.06%
Max Drawdown (3Y) Largest decline over 3 years	—	-5.43%	—
Current Drawdown Current decline from peak	-0.05%	-0.04%	-0.01%
Average Drawdown Average peak-to-trough decline	-0.02%	-0.49%	+0.47%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.04%	0.25%	-0.21%

Volatility

EVSB vs. BUCK - Volatility Comparison

The current volatility for Eaton Vance Ultra-Short Income ETF (EVSB) is 0.19%, while Simplify Treasury Option Income ETF (BUCK) has a volatility of 0.70%. This indicates that EVSB experiences smaller price fluctuations and is considered to be less risky than BUCK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EVSB	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.19%	0.70%	-0.51%
Volatility (6M) Calculated over the trailing 6-month period	0.51%	1.53%	-1.02%
Volatility (1Y) Calculated over the trailing 1-year period	0.77%	3.14%	-2.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.82%	3.49%	-2.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.82%	3.49%	-2.67%

EVSB vs. BUCK - Expense Ratio Comparison

EVSB has a 0.17% expense ratio, which is lower than BUCK's 0.35% expense ratio.

Dividends

EVSB vs. BUCK - Dividend Comparison

EVSB's dividend yield for the trailing twelve months is around 4.63%, less than BUCK's 7.42% yield.

Position	TTM	2025	2024	2023	2022
BUCK Simplify Treasury Option Income ETF	7.42%	7.59%	8.84%	4.84%	0.59%
EVSB Eaton Vance Ultra-Short Income ETF	4.63%	4.63%	5.18%	1.21%	0.00%

Frequently Asked Questions

Can I hold both EVSB and BUCK in my portfolio?

EVSB and BUCK have a correlation of -0.00, 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 BUCK?

BUCK has higher volatility (0.70%) compared to EVSB (0.19%). In terms of maximum drawdown, EVSB dropped -0.31% vs BUCK's -5.43%.

Which ETF is better, EVSB or BUCK?

On 1-year performance, BUCK leads with 7.95% vs 4.71% for EVSB. On fees, EVSB is cheaper at 0.17% per year. On volatility, EVSB has been the lower-risk option at 0.19%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, EVSB or BUCK?

Over the 1-year period, BUCK has performed better with a 7.95% return vs 4.71%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, EVSB or BUCK?

EVSB is cheaper with a 0.17% expense ratio, compared with 0.35% for BUCK.

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

BUCK has the higher dividend yield at 7.42%, compared with 4.63% for EVSB.

What is the main difference between EVSB and BUCK?

EVSB is categorized as Ultrashort Bond, while BUCK is Government Bonds. They also come from different issuers: Eaton Vance and Simplify. Their fees differ too: 0.17% for EVSB and 0.35% for BUCK.

Which has better risk-adjusted returns?

EVSB currently has the higher Sharpe Ratio (6.11 vs 2.54), 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.