FUSI vs. SPTU

Last updated Jun 4, 2026

FUSI (American Century Multisector Floating Income ETF) and SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) are both Ultrashort Bond funds. FUSI is actively managed, while SPTU is passively managed. At a 0.21 correlation, their price movements are largely independent. FUSI charges 0.28%/yr vs 0.05%/yr for SPTU.

Performance

FUSI vs. SPTU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Multisector Floating Income ETF (FUSI) 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, FUSI achieves a 2.39% return, which is significantly higher than SPTU's 1.48% return.

FUSI

• 1D: -0.02%
• 1M: 0.77%
• YTD: 2.39%
• 6M: 2.67%
• 1Y: 5.43%
• 3Y*: 5.97%
• 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)

FUSI vs. SPTU - Yearly Performance Comparison

	2026 (YTD)	2025
FUSI American Century Multisector Floating Income ETF	2.39%	0.75%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	1.48%	0.92%

Correlation

The correlation between FUSI and SPTU is 0.21, 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 Oct 9, 2025	0.21

Return for Risk

FUSI vs. SPTU — Risk / Return Rank

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

FUSI

FUSI Risk / Return Rank: 98
FUSI Sharpe Ratio Rank: 98
FUSI Sortino Ratio Rank: 99
FUSI Omega Ratio Rank: 99
FUSI Calmar Ratio Rank: 97
FUSI 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.

FUSI vs. SPTU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Multisector Floating Income ETF (FUSI) 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.

	FUSI	SPTU	Difference
Sharpe ratio Return per unit of total volatility	6.05	—	—
Sortino ratio Return per unit of downside risk	9.35	—	—
Omega ratio Gain probability vs. loss probability	2.99	—	—
Calmar ratio Return relative to maximum drawdown	12.25	—	—
Martin ratio Return relative to average drawdown	91.02	—	—
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

	FUSI	SPTU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	6.05	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	5.57	11.82	-6.25

Drawdowns

FUSI vs. SPTU - Drawdown Comparison

The maximum FUSI drawdown since its inception was -0.70%, which is greater than SPTU's maximum drawdown of -0.04%. Use the drawdown chart below to compare losses from any high point for FUSI and SPTU.

Drawdown Indicators

	FUSI	SPTU	Difference
Max Drawdown Largest peak-to-trough decline	-0.70%	-0.04%	-0.66%
Max Drawdown (1Y) Largest decline over 1 year	-0.45%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-0.70%	—	—
Current Drawdown Current decline from peak	-0.03%	0.00%	-0.03%
Average Drawdown Average peak-to-trough decline	-0.04%	-0.00%	-0.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	—	—

Volatility

Volatility by Period

	FUSI	SPTU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.25%	—	—
Volatility (6M) Calculated over the trailing 6-month period	0.61%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	0.90%	0.32%	+0.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.09%	0.32%	+0.77%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.09%	0.32%	+0.77%

FUSI vs. SPTU - Expense Ratio Comparison

FUSI has a 0.28% expense ratio, which is higher than SPTU's 0.05% expense ratio.

Dividends

FUSI vs. SPTU - Dividend Comparison

FUSI's dividend yield for the trailing twelve months is around 4.85%, more than SPTU's 2.36% yield.

Position	TTM	2025	2024	2023
FUSI American Century Multisector Floating Income ETF	4.85%	5.28%	5.98%	4.97%
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 FUSI and SPTU in my portfolio?

FUSI and SPTU have a correlation of 0.21, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FUSI 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, FUSI or SPTU?

SPTU is cheaper with a 0.05% expense ratio, compared with 0.28% for FUSI.

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

FUSI has the higher dividend yield at 4.85%, compared with 2.36% for SPTU.

What is the main difference between FUSI and SPTU?

They also come from different issuers: American Century and State Street. Their fees differ too: 0.28% for FUSI and 0.05% for SPTU.