BUCK vs. BKUI

Last updated Apr 1, 2026

Compare and contrast key facts about Simplify Stable Income ETF (BUCK) and BNY Mellon Ultra Short Income ETF (BKUI).

BUCK and BKUI are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. BUCK is an actively managed fund by Simplify. It was launched on Oct 27, 2022. BKUI is an actively managed fund by BNY Mellon. It was launched on Aug 9, 2021.

Performance

BUCK vs. BKUI - Performance Comparison

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

BUCK vs. BKUI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
BUCK Simplify Stable Income ETF	0.97%	4.13%	7.25%	4.63%	0.39%
BKUI BNY Mellon Ultra Short Income ETF	0.73%	4.93%	5.50%	5.75%	0.98%

Returns By Period

In the year-to-date period, BUCK achieves a 0.97% return, which is significantly higher than BKUI's 0.73% return.

BUCK

• 1D: 0.02%
• 1M: 0.13%
• YTD: 0.97%
• 6M: 2.27%
• 1Y: 2.66%
• 3Y*: 5.30%
• 5Y*: —
• 10Y*: —

BKUI

• 1D: 0.04%
• 1M: 0.06%
• YTD: 0.73%
• 6M: 1.85%
• 1Y: 4.32%
• 3Y*: 5.29%
• 5Y*: —
• 10Y*: —

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

BUCK vs. BKUI - Expense Ratio Comparison

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

BUCK

Simplify Stable Income ETF

BKUI

BNY Mellon Ultra Short Income ETF

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: 27
BUCK Sharpe Ratio Rank: 31
BUCK Sortino Ratio Rank: 26
BUCK Omega Ratio Rank: 30
BUCK Calmar Ratio Rank: 25
BUCK Martin Ratio Rank: 23

BKUI

BKUI Risk / Return Rank: 99
BKUI Sharpe Ratio Rank: 100
BKUI Sortino Ratio Rank: 99
BKUI Omega Ratio Rank: 99
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 Stable 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	0.55	9.39	-8.83
Sortino ratio Return per unit of downside risk	0.72	19.70	-18.98
Omega ratio Gain probability vs. loss probability	1.12	4.85	-3.73
Calmar ratio Return relative to maximum drawdown	0.51	17.35	-16.84
Martin ratio Return relative to average drawdown	1.35	112.84	-111.49
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 0.55, which is lower than the BKUI Sharpe Ratio of 9.39. The chart below compares the historical Sharpe Ratios of BUCK and BKUI, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	BUCK	BKUI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.55	9.39	-8.83
Sharpe Ratio (All Time) Calculated using the full available price history	1.44	6.01	-4.57

Correlation

The correlation between BUCK and BKUI is 0.06, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

BUCK vs. BKUI - Dividend Comparison

BUCK's dividend yield for the trailing twelve months is around 7.57%, more than BKUI's 4.40% yield.

	TTM	2025	2024	2023	2022	2021
BUCK Simplify Stable Income ETF	7.57%	7.59%	8.84%	4.84%	0.59%	0.00%
BKUI BNY Mellon Ultra Short Income ETF	4.40%	4.48%	5.11%	4.29%	1.82%	0.22%

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	-5.43%	-0.25%	-5.18%
Current Drawdown Current decline from peak	-0.13%	0.00%	-0.13%
Average Drawdown Average peak-to-trough decline	-0.52%	-0.28%	-0.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.04%	0.04%	+2.00%

Volatility

BUCK vs. BKUI - Volatility Comparison

Simplify Stable Income ETF (BUCK) has a higher volatility of 0.33% compared to BNY Mellon Ultra Short Income ETF (BKUI) at 0.19%. 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	0.33%	0.19%	+0.14%
Volatility (6M) Calculated over the trailing 6-month period	1.68%	0.28%	+1.40%
Volatility (1Y) Calculated over the trailing 1-year period	4.83%	0.46%	+4.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.55%	0.59%	+2.96%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.55%	0.59%	+2.96%