SPTB vs. BUCK

Last updated Apr 2, 2026

Compare and contrast key facts about State Street SPDR Portfolio Treasury ETF (SPTB) and Simplify Stable Income ETF (BUCK).

SPTB and BUCK are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SPTB is a passively managed fund by State Street that tracks the performance of the Bloomberg U.S. Treasury Index. It was launched on May 20, 2024. BUCK is an actively managed fund by Simplify. It was launched on Oct 27, 2022.

Performance

SPTB vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street SPDR Portfolio Treasury ETF (SPTB) and Simplify Stable Income ETF (BUCK). The values are adjusted to include any dividend payments, if applicable.

SPTB vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SPTB State Street SPDR Portfolio Treasury ETF	0.07%	6.14%	2.17%
BUCK Simplify Stable Income ETF	1.15%	4.13%	4.56%

Returns By Period

In the year-to-date period, SPTB achieves a 0.07% return, which is significantly lower than BUCK's 1.15% return.

SPTB

• 1D: -0.05%
• 1M: -1.36%
• YTD: 0.07%
• 6M: 0.58%
• 1Y: 2.94%
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUCK

• 1D: 0.17%
• 1M: 0.19%
• YTD: 1.15%
• 6M: 2.45%
• 1Y: 2.84%
• 3Y*: 5.36%
• 5Y*: —
• 10Y*: —

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

SPTB vs. BUCK - Expense Ratio Comparison

SPTB has a 0.03% expense ratio, which is lower than BUCK's 0.35% expense ratio.

BUCK

Simplify Stable Income ETF

SPTB

State Street SPDR Portfolio Treasury ETF

Return for Risk

SPTB vs. BUCK — Risk / Return Rank

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

SPTB

SPTB Risk / Return Rank: 34
SPTB Sharpe Ratio Rank: 36
SPTB Sortino Ratio Rank: 34
SPTB Omega Ratio Rank: 28
SPTB Calmar Ratio Rank: 41
SPTB Martin Ratio Rank: 31

BUCK

BUCK Risk / Return Rank: 26
BUCK Sharpe Ratio Rank: 30
BUCK Sortino Ratio Rank: 25
BUCK Omega Ratio Rank: 28
BUCK Calmar Ratio Rank: 23
BUCK Martin Ratio Rank: 21

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.

SPTB vs. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street SPDR Portfolio Treasury ETF (SPTB) and Simplify Stable 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.

	SPTB	BUCK	Difference
Sharpe ratio Return per unit of total volatility	0.72	0.59	+0.13
Sortino ratio Return per unit of downside risk	1.07	0.76	+0.30
Omega ratio Gain probability vs. loss probability	1.13	1.12	0.00
Calmar ratio Return relative to maximum drawdown	1.21	0.52	+0.69
Martin ratio Return relative to average drawdown	3.09	1.39	+1.70
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SPTB vs. BUCK - Sharpe Ratio Comparison

The current SPTB Sharpe Ratio is 0.72, which is comparable to the BUCK Sharpe Ratio of 0.59. The chart below compares the historical Sharpe Ratios of SPTB and BUCK, 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

	SPTB	BUCK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.72	0.59	+0.13
Sharpe Ratio (All Time) Calculated using the full available price history	1.01	1.45	-0.45

Correlation

The correlation between SPTB and BUCK is 0.27, 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

SPTB vs. BUCK - Dividend Comparison

SPTB's dividend yield for the trailing twelve months is around 4.21%, less than BUCK's 7.56% yield.

	TTM	2025	2024	2023	2022
SPTB State Street SPDR Portfolio Treasury ETF	4.21%	4.23%	2.76%	0.00%	0.00%
BUCK Simplify Stable Income ETF	7.56%	7.59%	8.84%	4.84%	0.59%

Drawdowns

SPTB vs. BUCK - Drawdown Comparison

The maximum SPTB drawdown since its inception was -4.96%, smaller than the maximum BUCK drawdown of -5.43%. Use the drawdown chart below to compare losses from any high point for SPTB and BUCK.

Drawdown Indicators

	SPTB	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	-4.96%	-5.43%	+0.47%
Max Drawdown (1Y) Largest decline over 1 year	-2.67%	-5.43%	+2.76%
Current Drawdown Current decline from peak	-1.80%	0.00%	-1.80%
Average Drawdown Average peak-to-trough decline	-1.28%	-0.52%	-0.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.04%	2.04%	-1.00%

Volatility

SPTB vs. BUCK - Volatility Comparison

State Street SPDR Portfolio Treasury ETF (SPTB) has a higher volatility of 1.44% compared to Simplify Stable Income ETF (BUCK) at 0.37%. This indicates that SPTB's price experiences larger fluctuations and is considered to be riskier than BUCK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPTB	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.44%	0.37%	+1.07%
Volatility (6M) Calculated over the trailing 6-month period	2.44%	1.68%	+0.76%
Volatility (1Y) Calculated over the trailing 1-year period	4.10%	4.83%	-0.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.50%	3.55%	+0.95%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.50%	3.55%	+0.95%