CGUI vs. SPTU

Last updated Jun 25, 2026

CGUI (Capital Group Ultra Short Income ETF) and SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) are both Ultrashort Bond funds. CGUI is actively managed, while SPTU is passively managed. At a 0.08 correlation, their price movements are largely independent. CGUI charges 0.18%/yr vs 0.05%/yr for SPTU.

Performance

CGUI vs. SPTU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Capital Group Ultra Short Income ETF (CGUI) 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

The year-to-date returns for both stocks are quite close, with CGUI having a 1.74% return and SPTU slightly lower at 1.68%.

CGUI

• 1D: 0.10%
• 1M: 0.41%
• YTD: 1.74%
• 6M: 1.80%
• 1Y: 4.26%
• 3Y*: —
• 5Y*: —
• 10Y*: —

SPTU

• 1D: 0.02%
• 1M: 0.31%
• YTD: 1.68%
• 6M: 1.76%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CGUI vs. SPTU - Yearly Performance Comparison

	2026 (YTD)	2025
CGUI Capital Group Ultra Short Income ETF	1.74%	1.07%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	1.68%	0.87%

Correlation

The correlation between CGUI and SPTU 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 (All Time) Calculated using the full available price history since Oct 8, 2025	0.08

Return for Risk

CGUI vs. SPTU — Risk / Return Rank

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

CGUI

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

SPTU

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

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.

CGUI vs. SPTU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Capital Group Ultra Short Income ETF (CGUI) 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	CGUI	SPTU	Difference
Sharpe ratio: Return per unit of total volatility	5.81	—	—
Sortino ratio: Return per unit of downside risk	10.51	—	—
Omega ratio: Gain probability vs. loss probability	2.57	—	—
Calmar ratio: Return relative to maximum drawdown	24.07	—	—
Martin ratio: Return relative to average drawdown	100.53	—	—

Drawdowns

CGUI vs. SPTU - Drawdown Comparison

The maximum CGUI drawdown since its inception was -0.18%, which is greater than SPTU's maximum drawdown of -0.04%. Use the drawdown chart below to compare losses from any high point for CGUI and SPTU.

Drawdown Indicators

	CGUI	SPTU	Difference
Max Drawdown Largest peak-to-trough decline	-0.18%	-0.04%	-0.14%
Max Drawdown (1Y) Largest decline over 1 year	-0.18%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.02%	-0.00%	-0.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.04%	—	—

Volatility

Volatility by Period

	CGUI	SPTU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.24%	—	—
Volatility (6M) Calculated over the trailing 6-month period	0.56%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	0.74%	0.32%	+0.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.80%	0.32%	+0.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.80%	0.32%	+0.48%

CGUI vs. SPTU - Expense Ratio Comparison

CGUI has a 0.18% 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

CGUI vs. SPTU - Dividend Comparison

CGUI's dividend yield for the trailing twelve months is around 3.88%, more than SPTU's 2.36% yield.

Position	TTM	2025	2024
CGUI Capital Group Ultra Short Income ETF	3.88%	4.17%	2.62%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.36%	0.89%	0.00%

Frequently Asked Questions

Can I hold both CGUI and SPTU in my portfolio?

CGUI and SPTU 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 ETF is better, CGUI 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, CGUI or SPTU?

SPTU is cheaper with a 0.05% expense ratio, compared with 0.18% for CGUI.

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

CGUI has the higher dividend yield at 3.88%, compared with 2.36% for SPTU.

What is the main difference between CGUI and SPTU?

They also come from different issuers: Capital Group and State Street. Their fees differ too: 0.18% for CGUI and 0.05% for SPTU.