CMBO vs. SPTU

Last updated Jun 5, 2026

CMBO (Wayfinder Dynamic U.S. Interest Rate ETF) and SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) are both Ultrashort Bond funds. CMBO is actively managed, while SPTU is passively managed. At a 0.27 correlation, their price movements are largely independent. CMBO charges 0.15%/yr vs 0.05%/yr for SPTU.

Performance

CMBO vs. SPTU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Wayfinder Dynamic U.S. Interest Rate ETF (CMBO) 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, CMBO achieves a 1.59% return, which is significantly higher than SPTU's 1.48% return.

CMBO

• 1D: 0.00%
• 1M: 0.30%
• YTD: 1.59%
• 6M: 1.95%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

SPTU

• 1D: 0.00%
• 1M: 0.27%
• YTD: 1.48%
• 6M: 1.77%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CMBO vs. SPTU - Yearly Performance Comparison

	2026 (YTD)	2025
CMBO Wayfinder Dynamic U.S. Interest Rate ETF	1.59%	0.52%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	1.48%	0.64%

Correlation

The correlation between CMBO and SPTU is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 5, 2025	0.27

Return for Risk

CMBO vs. SPTU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Wayfinder Dynamic U.S. Interest Rate ETF (CMBO) 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	CMBO	SPTU	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	9.80	11.77	-1.97

Drawdowns

CMBO vs. SPTU - Drawdown Comparison

The maximum CMBO drawdown since its inception was -0.22%, which is greater than SPTU's maximum drawdown of -0.04%. Use the drawdown chart below to compare losses from any high point for CMBO and SPTU.

Drawdown Indicators

	CMBO	SPTU	Difference
Max Drawdown Largest peak-to-trough decline	-0.22%	-0.04%	-0.18%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.01%	-0.00%	-0.01%

Volatility

Volatility by Period

	CMBO	SPTU	Difference
Volatility (1Y) Calculated over the trailing 1-year period	0.38%	0.32%	+0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.38%	0.32%	+0.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.38%	0.32%	+0.06%

CMBO vs. SPTU - Expense Ratio Comparison

CMBO 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

CMBO vs. SPTU - Dividend Comparison

CMBO has not paid dividends to shareholders, while SPTU's dividend yield for the trailing twelve months is around 2.36%.

Position	TTM	2025
CMBO Wayfinder Dynamic U.S. Interest Rate ETF	0.00%	0.00%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.36%	0.89%

Frequently Asked Questions

Can I hold both CMBO and SPTU in my portfolio?

CMBO and SPTU have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CMBO 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, CMBO or SPTU?

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

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

SPTU has the higher dividend yield at 2.36%, compared with 0.00% for CMBO.

What is the main difference between CMBO and SPTU?

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