DUSB vs. SPTU

Last updated Jun 4, 2026

DUSB (Dimensional Ultrashort Fixed Income ETF) and SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) are both Ultrashort Bond funds. DUSB is actively managed, while SPTU is passively managed. At a 0.06 correlation, their price movements are largely independent. DUSB charges 0.15%/yr vs 0.05%/yr for SPTU.

Performance

DUSB vs. SPTU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Dimensional Ultrashort Fixed Income ETF (DUSB) and State Street SPDR Portfolio Ultra Short T-Bill ETF (SPTU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DUSB achieves a 1.68% return, which is significantly higher than SPTU's 1.48% return.

DUSB

• 1D: 0.02%
• 1M: 0.34%
• YTD: 1.68%
• 6M: 1.97%
• 1Y: 4.31%
• 3Y*: —
• 5Y*: —
• 10Y*: —

SPTU

• 1D: 0.00%
• 1M: 0.31%
• YTD: 1.48%
• 6M: 1.81%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

DUSB vs. SPTU - Yearly Performance Comparison

	2026 (YTD)	2025
DUSB Dimensional Ultrashort Fixed Income ETF	1.68%	0.95%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	1.48%	0.92%

Correlation

The correlation between DUSB and SPTU is 0.06, 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 (All Time) Calculated using the full available price history since Oct 9, 2025	0.06

Return for Risk

DUSB vs. SPTU — Risk / Return Rank

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

DUSB

DUSB Risk / Return Rank: 99
DUSB Sharpe Ratio Rank: 99
DUSB Sortino Ratio Rank: 100
DUSB Omega Ratio Rank: 99
DUSB Calmar Ratio Rank: 99
DUSB 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.

DUSB vs. SPTU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Dimensional Ultrashort Fixed Income ETF (DUSB) and State Street SPDR Portfolio Ultra Short T-Bill ETF (SPTU). 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.

	DUSB	SPTU	Difference
Sharpe ratio: Return per unit of total volatility	10.10	—	—
Sortino ratio: Return per unit of downside risk	24.10	—	—
Omega ratio: Gain probability vs. loss probability	4.87	—	—
Calmar ratio: Return relative to maximum drawdown	55.00	—	—
Martin ratio: Return relative to average drawdown	332.80	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	DUSB	SPTU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	10.10	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	9.88	11.82	-1.94

Drawdowns

DUSB vs. SPTU - Drawdown Comparison

The maximum DUSB drawdown since its inception was -0.29%, which is greater than SPTU's maximum drawdown of -0.04%. Use the drawdown chart below to compare losses from any high point for DUSB and SPTU.

Drawdown Indicators

	DUSB	SPTU	Difference
Max Drawdown Largest peak-to-trough decline	-0.29%	-0.04%	-0.25%
Max Drawdown (1Y) Largest decline over 1 year	-0.08%	—	—
Current Drawdown Current decline from peak	-0.02%	0.00%	-0.02%
Average Drawdown Average peak-to-trough decline	-0.01%	-0.00%	-0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.01%	—	—

Volatility

Volatility by Period

	DUSB	SPTU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.13%	—	—
Volatility (6M) Calculated over the trailing 6-month period	0.30%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	0.43%	0.32%	+0.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.52%	0.32%	+0.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.52%	0.32%	+0.20%

DUSB vs. SPTU - Expense Ratio Comparison

DUSB has a 0.15% expense ratio, which is higher than SPTU's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

DUSB vs. SPTU - Dividend Comparison

DUSB's dividend yield for the trailing twelve months is around 4.06%, more than SPTU's 2.36% yield.

Position	TTM	2025	2024	2023
DUSB Dimensional Ultrashort Fixed Income ETF	4.06%	4.32%	4.92%	1.23%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.36%	0.89%	0.00%	0.00%

Frequently Asked Questions

Can I hold both DUSB and SPTU in my portfolio?

DUSB and SPTU have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, DUSB or SPTU?

On fees, SPTU is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, DUSB or SPTU?

SPTU is cheaper with a 0.05% expense ratio, compared with 0.15% for DUSB.

Which ETF pays a higher dividend yield, DUSB or SPTU?

DUSB has the higher dividend yield at 4.06%, compared with 2.36% for SPTU.

What is the main difference between DUSB and SPTU?

They also come from different issuers: Dimensional and State Street. Their fees differ too: 0.15% for DUSB and 0.05% for SPTU.