XBIL vs. SPTU

Last updated Jun 24, 2026

XBIL (US Treasury 6 Month Bill ETF) and SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) are both Ultrashort Bond funds - XBIL tracks the ICE BofA US 6-Month Treasury Bill Index - Benchmark TR Gross while SPTU tracks the ICE BofA US Treasury Bill Index. Both are passively managed. At a 0.24 correlation, their price movements are largely independent. XBIL charges 0.15%/yr vs 0.05%/yr for SPTU.

Performance

XBIL vs. SPTU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in US Treasury 6 Month Bill ETF (XBIL) 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, XBIL achieves a 1.57% return, which is significantly lower than SPTU's 1.66% return.

XBIL

• 1D: 0.01%
• 1M: 0.22%
• YTD: 1.57%
• 6M: 1.67%
• 1Y: 3.82%
• 3Y*: 4.60%
• 5Y*: —
• 10Y*: —

SPTU

• 1D: 0.03%
• 1M: 0.29%
• YTD: 1.66%
• 6M: 1.74%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

XBIL vs. SPTU - Yearly Performance Comparison

	2026 (YTD)	2025
XBIL US Treasury 6 Month Bill ETF	1.57%	0.93%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	1.66%	0.87%

Correlation

The correlation between XBIL and SPTU is 0.24, 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 8, 2025	0.24

Return for Risk

XBIL vs. SPTU — Risk / Return Rank

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

XBIL

XBIL Risk / Return Rank: 100
XBIL Sharpe Ratio Rank: 100
XBIL Sortino Ratio Rank: 100
XBIL Omega Ratio Rank: 99
XBIL Calmar Ratio Rank: 100
XBIL Martin Ratio Rank: 100

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.

XBIL vs. SPTU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for US Treasury 6 Month Bill ETF (XBIL) 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.

	XBIL	SPTU	Difference
Sharpe ratio: Return per unit of total volatility	12.56	—	—
Sortino ratio: Return per unit of downside risk	38.47	—	—
Omega ratio: Gain probability vs. loss probability	10.10	—	—
Calmar ratio: Return relative to maximum drawdown	64.01	—	—
Martin ratio: Return relative to average drawdown	592.11	—	—

Drawdowns

XBIL vs. SPTU - Drawdown Comparison

The maximum XBIL drawdown since its inception was -0.08%, which is greater than SPTU's maximum drawdown of -0.04%. Use the drawdown chart below to compare losses from any high point for XBIL and SPTU.

Drawdown Indicators

	XBIL	SPTU	Difference
Max Drawdown Largest peak-to-trough decline	-0.08%	-0.04%	-0.04%
Max Drawdown (1Y) Largest decline over 1 year	-0.06%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-0.07%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.00%	-0.00%	0.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.01%	—	—

Volatility

Volatility by Period

	XBIL	SPTU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.12%	—	—
Volatility (6M) Calculated over the trailing 6-month period	0.19%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	0.31%	0.33%	-0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.38%	0.33%	+0.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.38%	0.33%	+0.05%

XBIL vs. SPTU - Expense Ratio Comparison

XBIL 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

XBIL vs. SPTU - Dividend Comparison

XBIL's dividend yield for the trailing twelve months is around 3.76%, more than SPTU's 2.36% yield.

Position	TTM	2025	2024	2023
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.36%	0.89%	0.00%	0.00%
XBIL US Treasury 6 Month Bill ETF	3.76%	4.01%	4.90%	4.30%

Frequently Asked Questions

Can I hold both XBIL and SPTU in my portfolio?

XBIL and SPTU have a correlation of 0.24, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, XBIL 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, XBIL or SPTU?

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

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

XBIL has the higher dividend yield at 3.76%, compared with 2.36% for SPTU.

What is the main difference between XBIL and SPTU?

XBIL tracks ICE BofA US 6-Month Treasury Bill Index - Benchmark TR Gross, while SPTU tracks ICE BofA US Treasury Bill Index. They also come from different issuers: US Benchmark Series and State Street. Their fees differ too: 0.15% for XBIL and 0.05% for SPTU.