SIOO vs. BOXX

Last updated Jul 12, 2026

SIOO (VistaShares Target 15 S&P 100 Distribution ETF) and BOXX (Alpha Architect 1-3 Month Box ETF) are both exchange-traded funds - SIOO is a Derivative Income fund tracking the S&P 100, while BOXX is a Ultrashort Bond fund tracking the Solactive 1-3 Month US T-Bill Index. Both are passively managed. At a correlation of -0.13, they often move in opposite directions. SIOO charges 0.59%/yr vs 0.19%/yr for BOXX.

Performance

SIOO vs. BOXX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in VistaShares Target 15 S&P 100 Distribution ETF (SIOO) and Alpha Architect 1-3 Month Box ETF (BOXX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SIOO achieves a 7.33% return, which is significantly higher than BOXX's 2.00% return.

SIOO

• 1D: 0.28%
• 1M: 2.51%
• 6M: 6.82%
• YTD: 7.33%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BOXX

• 1D: 0.05%
• 1M: 0.33%
• 6M: 1.86%
• YTD: 2.00%
• 1Y: 4.08%
• 3Y*: 4.71%
• 5Y*: —
• 10Y*: —

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

SIOO vs. BOXX - Yearly Performance Comparison

	2026 (YTD)	2025
SIOO VistaShares Target 15 S&P 100 Distribution ETF	7.33%	1.16%
BOXX Alpha Architect 1-3 Month Box ETF	2.00%	0.34%

Correlation

The correlation between SIOO and BOXX is -0.13, 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 Dec 11, 2025	-0.13

Return for Risk

SIOO vs. BOXX — Risk / Return Rank

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

SIOO

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

BOXX

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

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.

SIOO vs. BOXX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for VistaShares Target 15 S&P 100 Distribution ETF (SIOO) and Alpha Architect 1-3 Month Box ETF (BOXX). 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.

	SIOO	BOXX	Difference
Sharpe ratio: Return per unit of total volatility	—	12.53	—
Sortino ratio: Return per unit of downside risk	—	36.38	—
Omega ratio: Gain probability vs. loss probability	—	8.83	—
Calmar ratio: Return relative to maximum drawdown	—	59.92	—
Martin ratio: Return relative to average drawdown	—	504.77	—

Drawdowns

SIOO vs. BOXX - Drawdown Comparison

The maximum SIOO drawdown since its inception was -6.86%, which is greater than BOXX's maximum drawdown of -0.12%. Use the drawdown chart below to compare losses from any high point for SIOO and BOXX.

Drawdown Indicators

	SIOO	BOXX	Difference
Max Drawdown Largest peak-to-trough decline	-6.86%	-0.12%	-6.74%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.07%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-0.12%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-1.06%	-0.00%	-1.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.01%	—

Volatility

Volatility by Period

	SIOO	BOXX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.12%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.26%	—
Volatility (1Y) Calculated over the trailing 1-year period	10.52%	0.33%	+10.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.52%	0.37%	+10.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.52%	0.37%	+10.15%

SIOO vs. BOXX - Expense Ratio Comparison

SIOO has a 0.59% expense ratio, which is higher than BOXX's 0.19% expense ratio.

Dividends

SIOO vs. BOXX - Dividend Comparison

SIOO's dividend yield for the trailing twelve months is around 8.69%, while BOXX has not paid dividends to shareholders.

Position	TTM	2025	2024
BOXX Alpha Architect 1-3 Month Box ETF	0.00%	0.00%	0.26%
SIOO VistaShares Target 15 S&P 100 Distribution ETF	8.69%	1.27%	0.00%

Frequently Asked Questions

Can I hold both SIOO and BOXX in my portfolio?

SIOO and BOXX have a correlation of -0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, SIOO or BOXX?

On fees, BOXX is cheaper at 0.19% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, SIOO or BOXX?

BOXX is cheaper with a 0.19% expense ratio, compared with 0.59% for SIOO.

Which ETF pays a higher dividend yield, SIOO or BOXX?

SIOO has the higher dividend yield at 8.69%, compared with 0.00% for BOXX.

What is the main difference between SIOO and BOXX?

SIOO is categorized as Derivative Income, while BOXX is Ultrashort Bond. SIOO tracks S&P 100, while BOXX tracks Solactive 1-3 Month US T-Bill Index. They also come from different issuers: VistaShares and Alpha Architect. Their fees differ too: 0.59% for SIOO and 0.19% for BOXX.