SPTU vs. ILS

Last updated Aug 6, 2026

SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) and ILS (Brookmont Catastrophic Bond ETF) are both exchange-traded funds - SPTU is a Ultrashort Bond fund tracking the ICE BofA US Treasury Bill Index, while ILS is a Nontraditional Bonds fund actively managed by Brookmont. SPTU is passively managed, while ILS is actively managed. Their -0.09 correlation means they have often moved in opposite directions in the past. SPTU charges 0.05%/yr vs 1.58%/yr for ILS.

Performance

SPTU vs. ILS - Performance Comparison

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

Returns By Period

In the year-to-date period, SPTU achieves a 2.13% return, which is significantly lower than ILS's 3.63% return.

SPTU

• 1D: 0.03%
• 1M: 0.30%
• 6M: 1.81%
• YTD: 2.13%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

ILS

• 1D: 0.08%
• 1M: 1.09%
• 6M: 3.29%
• YTD: 3.63%
• 1Y: 7.69%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 5.38%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ILS Brookmont Catastrophic Bond ETF	$469.06K	$481.42K	$625.35K
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	$58.95K	$44.15K	$70.65K

SPTU vs. ILS - Yearly Performance Comparison

	2026 (YTD)	2025
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.13%	0.87%
ILS Brookmont Catastrophic Bond ETF	3.63%	1.46%

Correlation

The correlation between SPTU and ILS is -0.09, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 8, 2025	-0.09

Return for Risk

SPTU vs. ILS — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

SPTU

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

ILS

ILS Risk / Return Rank: 97
ILS Sharpe Ratio Rank: 96
ILS Sortino Ratio Rank: 97
ILS Omega Ratio Rank: 97
ILS Calmar Ratio Rank: 98
ILS Martin Ratio Rank: 98

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

SPTU vs. ILS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street SPDR Portfolio Ultra Short T-Bill ETF (SPTU) and Brookmont Catastrophic Bond ETF (ILS). 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.

	SPTU	ILS	Difference
Sharpe ratio: Return per unit of total volatility	—	3.14	—
Sortino ratio: Return per unit of downside risk	—	5.22	—
Omega ratio: Gain probability vs. loss probability	—	1.73	—
Calmar ratio: Return relative to maximum drawdown	—	13.95	—
Martin ratio: Return relative to average drawdown	—	52.37	—

Drawdowns

SPTU vs. ILS - Drawdown Comparison

The maximum SPTU drawdown since its inception was -0.04%, smaller than the maximum ILS drawdown of -2.46%. Use the drawdown chart below to compare losses from any high point for SPTU and ILS.

Drawdown Indicators

	SPTU	ILS	Difference
Max Drawdown Largest peak-to-trough decline	-0.04%	-2.46%	+2.42%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.55%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	0.00%	-0.50%	+0.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.15%	—

Volatility

Volatility by Period

	SPTU	ILS	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.41%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.44%	—
Volatility (1Y) Calculated over the trailing 1-year period	0.32%	2.46%	-2.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.32%	3.63%	-3.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.32%	3.63%	-3.31%

SPTU vs. ILS - Expense Ratio Comparison

SPTU has a 0.05% expense ratio, which is lower than ILS's 1.58% expense ratio.

Dividends

SPTU vs. ILS - Dividend Comparison

SPTU's dividend yield for the trailing twelve months is around 2.97%, less than ILS's 8.13% yield.

Position	TTM	2025
ILS Brookmont Catastrophic Bond ETF	8.13%	6.06%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.97%	0.89%

Frequently Asked Questions

Can I hold both SPTU and ILS in my portfolio?

SPTU and ILS have a correlation of -0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, SPTU or ILS?

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, SPTU or ILS?

SPTU is cheaper with a 0.05% expense ratio, compared with 1.58% for ILS.

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

ILS has the higher dividend yield at 8.13%, compared with 2.97% for SPTU.

What is the main difference between SPTU and ILS?

SPTU is categorized as Ultrashort Bond, while ILS is Nontraditional Bonds. They also come from different issuers: State Street and Brookmont. Their fees differ too: 0.05% for SPTU and 1.58% for ILS.