BUCK vs. BKUI

Last updated Jun 4, 2026

BUCK (Simplify Treasury Option Income ETF) and BKUI (BNY Mellon Ultra Short Income ETF) are both exchange-traded funds - BUCK is a Government Bonds fund actively managed by Simplify, while BKUI is a Ultrashort Bond fund actively managed by BNY Mellon. Both are actively managed. Over the past 3 years, BUCK returned 5.27%/yr vs 5.21%/yr for BKUI. At a 0.06 correlation, their price movements are largely independent. BUCK charges 0.35%/yr vs 0.12%/yr for BKUI.

Performance

BUCK vs. BKUI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Simplify Treasury Option Income ETF (BUCK) and BNY Mellon Ultra Short Income ETF (BKUI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BUCK achieves a 1.90% return, which is significantly higher than BKUI's 1.42% return.

BUCK

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

BKUI

• 1D: -0.01%
• 1M: 0.33%
• YTD: 1.42%
• 6M: 1.74%
• 1Y: 4.32%
• 3Y*: 5.21%
• 5Y*: —
• 10Y*: —

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

BUCK vs. BKUI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
BUCK Simplify Treasury Option Income ETF	1.90%	4.13%	7.25%	4.63%	0.39%
BKUI BNY Mellon Ultra Short Income ETF	1.42%	4.93%	5.50%	5.75%	0.98%

Correlation

The correlation between BUCK and BKUI is 0.08, 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	0.08
Correlation (3Y) Calculated over the trailing 3-year period	0.09
Correlation (All Time) Calculated using the full available price history since Oct 31, 2022	0.06

Return for Risk

BUCK vs. BKUI — Risk / Return Rank

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

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

BKUI

BKUI Risk / Return Rank: 99
BKUI Sharpe Ratio Rank: 99
BKUI Sortino Ratio Rank: 100
BKUI Omega Ratio Rank: 100
BKUI Calmar Ratio Rank: 99
BKUI Martin Ratio Rank: 99

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.

BUCK vs. BKUI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Simplify Treasury Option Income ETF (BUCK) and BNY Mellon Ultra Short Income ETF (BKUI). 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.

	BUCK	BKUI	Difference
Sharpe ratio: Return per unit of total volatility	2.54	10.52	-7.98
Sortino ratio: Return per unit of downside risk	3.83	25.25	-21.42
Omega ratio: Gain probability vs. loss probability	1.54	6.02	-4.48
Calmar ratio: Return relative to maximum drawdown	6.11	32.56	-26.45
Martin ratio: Return relative to average drawdown	32.31	230.94	-198.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BUCK vs. BKUI - Sharpe Ratio Comparison

The current BUCK Sharpe Ratio is 2.54, which is lower than the BKUI Sharpe Ratio of 10.52. The chart below compares the historical Sharpe Ratios of BUCK and BKUI, 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

	BUCK	BKUI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.54	10.52	-7.98
Sharpe Ratio (All Time) Calculated using the full available price history	1.47	6.08	-4.61

Drawdowns

BUCK vs. BKUI - Drawdown Comparison

The maximum BUCK drawdown since its inception was -5.43%, which is greater than BKUI's maximum drawdown of -1.72%. Use the drawdown chart below to compare losses from any high point for BUCK and BKUI.

Drawdown Indicators

	BUCK	BKUI	Difference
Max Drawdown Largest peak-to-trough decline	-5.43%	-1.72%	-3.71%
Max Drawdown (1Y) Largest decline over 1 year	-1.31%	-0.13%	-1.18%
Max Drawdown (3Y) Largest decline over 3 years	-5.43%	-0.25%	-5.18%
Current Drawdown Current decline from peak	-0.04%	-0.01%	-0.03%
Average Drawdown Average peak-to-trough decline	-0.49%	-0.27%	-0.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.25%	0.02%	+0.23%

Volatility

BUCK vs. BKUI - Volatility Comparison

Simplify Treasury Option Income ETF (BUCK) has a higher volatility of 0.70% compared to BNY Mellon Ultra Short Income ETF (BKUI) at 0.15%. This indicates that BUCK's price experiences larger fluctuations and is considered to be riskier than BKUI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BUCK	BKUI	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.70%	0.15%	+0.55%
Volatility (6M) Calculated over the trailing 6-month period	1.53%	0.31%	+1.22%
Volatility (1Y) Calculated over the trailing 1-year period	3.14%	0.41%	+2.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.49%	0.59%	+2.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.49%	0.59%	+2.90%

BUCK vs. BKUI - Expense Ratio Comparison

BUCK has a 0.35% expense ratio, which is higher than BKUI's 0.12% expense ratio.

Dividends

BUCK vs. BKUI - Dividend Comparison

BUCK's dividend yield for the trailing twelve months is around 7.42%, more than BKUI's 4.21% yield.

Position	TTM	2025	2024	2023	2022	2021
BKUI BNY Mellon Ultra Short Income ETF	4.21%	4.48%	5.11%	4.29%	1.82%	0.22%
BUCK Simplify Treasury Option Income ETF	7.42%	7.59%	8.84%	4.84%	0.59%	0.00%

Frequently Asked Questions

Can I hold both BUCK and BKUI in my portfolio?

BUCK and BKUI have a correlation of 0.08, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BUCK or BKUI?

BUCK has higher volatility (0.70%) compared to BKUI (0.15%). In terms of maximum drawdown, BUCK dropped -5.43% vs BKUI's -1.72%.

Which ETF is better, BUCK or BKUI?

On 3-year performance, BUCK leads with 5.27% vs 5.21% for BKUI. On fees, BKUI is cheaper at 0.12% per year. On volatility, BKUI has been the lower-risk option at 0.15%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, BUCK or BKUI?

Over the 3-year period, BUCK has performed better with a 5.27% return vs 5.21%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BUCK or BKUI?

BKUI is cheaper with a 0.12% expense ratio, compared with 0.35% for BUCK.

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

BUCK has the higher dividend yield at 7.42%, compared with 4.21% for BKUI.

What is the main difference between BUCK and BKUI?

BUCK is categorized as Government Bonds, while BKUI is Ultrashort Bond. They also come from different issuers: Simplify and BNY Mellon. Their fees differ too: 0.35% for BUCK and 0.12% for BKUI.

Which has better risk-adjusted returns?

BKUI currently has the higher Sharpe Ratio (10.52 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.