SPTU vs. FOXY

Last updated Jul 14, 2026

SPTU (State Street SPDR Portfolio Ultra Short T-Bill ETF) and FOXY (Simplify Currency Strategy ETF) are both exchange-traded funds - SPTU is a Ultrashort Bond fund tracking the ICE BofA US Treasury Bill Index, while FOXY is a Leveraged Currency fund actively managed by Simplify. SPTU is passively managed, while FOXY is actively managed. At a correlation of -0.16, they often move in opposite directions. SPTU charges 0.05%/yr vs 0.81%/yr for FOXY.

Performance

SPTU vs. FOXY - 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 Simplify Currency Strategy ETF (FOXY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SPTU achieves a 1.86% return, which is significantly lower than FOXY's 13.33% return.

SPTU

• 1D: 0.00%
• 1M: 0.26%
• 6M: 1.74%
• YTD: 1.86%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

FOXY

• 1D: -0.20%
• 1M: 2.34%
• 6M: 12.88%
• YTD: 13.33%
• 1Y: 22.32%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SPTU vs. FOXY - Yearly Performance Comparison

	2026 (YTD)	2025
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	1.86%	0.87%
FOXY Simplify Currency Strategy ETF	13.33%	0.63%

Correlation

The correlation between SPTU and FOXY is -0.16, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 8, 2025	-0.16

Return for Risk

SPTU vs. FOXY — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments 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.

FOXY

FOXY Risk / Return Rank: 89
FOXY Sharpe Ratio Rank: 88
FOXY Sortino Ratio Rank: 90
FOXY Omega Ratio Rank: 87
FOXY Calmar Ratio Rank: 93
FOXY Martin Ratio Rank: 86

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.

SPTU vs. FOXY - 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 Simplify Currency Strategy ETF (FOXY). 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	FOXY	Difference
Sharpe ratio: Return per unit of total volatility	—	2.29	—
Sortino ratio: Return per unit of downside risk	—	3.36	—
Omega ratio: Gain probability vs. loss probability	—	1.42	—
Calmar ratio: Return relative to maximum drawdown	—	5.18	—
Martin ratio: Return relative to average drawdown	—	14.02	—

Drawdowns

SPTU vs. FOXY - Drawdown Comparison

The maximum SPTU drawdown since its inception was -0.04%, smaller than the maximum FOXY drawdown of -13.09%. Use the drawdown chart below to compare losses from any high point for SPTU and FOXY.

Drawdown Indicators

	SPTU	FOXY	Difference
Max Drawdown Largest peak-to-trough decline	-0.04%	-13.09%	+13.05%
Max Drawdown (1Y) Largest decline over 1 year	—	-4.32%	—
Current Drawdown Current decline from peak	0.00%	-1.14%	+1.14%
Average Drawdown Average peak-to-trough decline	-0.00%	-2.03%	+2.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.60%	—

Volatility

Volatility by Period

	SPTU	FOXY	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.45%	—
Volatility (6M) Calculated over the trailing 6-month period	—	7.09%	—
Volatility (1Y) Calculated over the trailing 1-year period	0.32%	9.82%	-9.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.32%	14.70%	-14.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.32%	14.70%	-14.38%

SPTU vs. FOXY - Expense Ratio Comparison

SPTU has a 0.05% expense ratio, which is lower than FOXY's 0.81% expense ratio.

Dividends

SPTU vs. FOXY - Dividend Comparison

SPTU's dividend yield for the trailing twelve months is around 2.66%, less than FOXY's 7.63% yield.

Position	TTM	2025
FOXY Simplify Currency Strategy ETF	7.63%	5.51%
SPTU State Street SPDR Portfolio Ultra Short T-Bill ETF	2.66%	0.89%

Frequently Asked Questions

Can I hold both SPTU and FOXY in my portfolio?

SPTU and FOXY have a correlation of -0.16, 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 FOXY?

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 FOXY?

SPTU is cheaper with a 0.05% expense ratio, compared with 0.81% for FOXY.

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

FOXY has the higher dividend yield at 7.63%, compared with 2.66% for SPTU.

What is the main difference between SPTU and FOXY?

SPTU is categorized as Ultrashort Bond, while FOXY is Leveraged Currency. They also come from different issuers: State Street and Simplify. Their fees differ too: 0.05% for SPTU and 0.81% for FOXY.