CAOS vs. XISE

Last updated Jun 24, 2026

CAOS (Alpha Architect Tail Risk ETF) and XISE (FT Cboe Vest U.S. Equity Buffer & Premium Income ETF – September) are both Options Trading funds. Both are actively managed. Over the past year, CAOS returned 1.62% vs 6.58% for XISE. At a correlation of -0.15, they often move in opposite directions. CAOS charges 0.63%/yr vs 0.85%/yr for XISE.

Performance

CAOS vs. XISE - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Alpha Architect Tail Risk ETF (CAOS) and FT Cboe Vest U.S. Equity Buffer & Premium Income ETF – September (XISE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CAOS achieves a 0.71% return, which is significantly lower than XISE's 3.14% return.

CAOS

• 1D: -0.04%
• 1M: -0.12%
• YTD: 0.71%
• 6M: 0.61%
• 1Y: 1.62%
• 3Y*: 3.94%
• 5Y*: —
• 10Y*: —

XISE

• 1D: -0.08%
• 1M: 0.32%
• YTD: 3.14%
• 6M: 3.12%
• 1Y: 6.58%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CAOS vs. XISE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
CAOS Alpha Architect Tail Risk ETF	0.71%	2.55%	5.33%	1.45%
XISE FT Cboe Vest U.S. Equity Buffer & Premium Income ETF – September	3.14%	6.42%	5.70%	2.93%

Correlation

The correlation between CAOS and XISE is -0.37, 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 (1Y) Calculated over the trailing 1-year period	-0.37
Correlation (All Time) Calculated using the full available price history since Sep 18, 2023	-0.15

Over the past year, the inverse relationship between CAOS and XISE has strengthened: their correlation has moved from -0.15 to -0.37, meaning they now move in opposite directions more often than their long-term average.

Return for Risk

CAOS vs. XISE — Risk / Return Rank

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

CAOS

CAOS Risk / Return Rank: 36
CAOS Sharpe Ratio Rank: 31
CAOS Sortino Ratio Rank: 34
CAOS Omega Ratio Rank: 34
CAOS Calmar Ratio Rank: 45
CAOS Martin Ratio Rank: 36

XISE

XISE Risk / Return Rank: 84
XISE Sharpe Ratio Rank: 78
XISE Sortino Ratio Rank: 87
XISE Omega Ratio Rank: 90
XISE Calmar Ratio Rank: 76
XISE Martin Ratio Rank: 91

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.

CAOS vs. XISE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Alpha Architect Tail Risk ETF (CAOS) and FT Cboe Vest U.S. Equity Buffer & Premium Income ETF – September (XISE). 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.

	CAOS	XISE	Difference
Sharpe ratio: Return per unit of total volatility	1.08	2.26	-1.18
Sortino ratio: Return per unit of downside risk	1.72	3.52	-1.80
Omega ratio: Gain probability vs. loss probability	1.22	1.52	-0.30
Calmar ratio: Return relative to maximum drawdown	2.15	3.52	-1.37
Martin ratio: Return relative to average drawdown	5.18	19.66	-14.48

CAOS vs. XISE - Sharpe Ratio Comparison

The current CAOS Sharpe Ratio is 1.08, which is lower than the XISE Sharpe Ratio of 2.26. The chart below compares the historical Sharpe Ratios of CAOS and XISE, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

CAOS vs. XISE - Drawdown Comparison

The maximum CAOS drawdown since its inception was -3.89%, smaller than the maximum XISE drawdown of -6.17%. Use the drawdown chart below to compare losses from any high point for CAOS and XISE.

Drawdown Indicators

	CAOS	XISE	Difference
Max Drawdown Largest peak-to-trough decline	-3.89%	-6.17%	+2.28%
Max Drawdown (1Y) Largest decline over 1 year	-0.76%	-1.88%	+1.12%
Max Drawdown (3Y) Largest decline over 3 years	-3.60%	—	—
Current Drawdown Current decline from peak	-1.18%	-0.08%	-1.10%
Average Drawdown Average peak-to-trough decline	-0.92%	-0.24%	-0.68%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.32%	0.34%	-0.02%

Volatility

CAOS vs. XISE - Volatility Comparison

The current volatility for Alpha Architect Tail Risk ETF (CAOS) is 0.32%, while FT Cboe Vest U.S. Equity Buffer & Premium Income ETF – September (XISE) has a volatility of 0.36%. This indicates that CAOS experiences smaller price fluctuations and is considered to be less risky than XISE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CAOS	XISE	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.32%	0.36%	-0.04%
Volatility (6M) Calculated over the trailing 6-month period	1.05%	2.33%	-1.28%
Volatility (1Y) Calculated over the trailing 1-year period	1.50%	2.92%	-1.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.23%	4.88%	-0.65%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.23%	4.88%	-0.65%

CAOS vs. XISE - Expense Ratio Comparison

CAOS has a 0.63% expense ratio, which is lower than XISE's 0.85% expense ratio.

Dividends

CAOS vs. XISE - Dividend Comparison

CAOS has not paid dividends to shareholders, while XISE's dividend yield for the trailing twelve months is around 5.91%.

Position	TTM	2025	2024	2023
CAOS Alpha Architect Tail Risk ETF	0.00%	0.00%	0.00%	0.00%
XISE FT Cboe Vest U.S. Equity Buffer & Premium Income ETF – September	5.91%	5.81%	7.04%	1.20%

Frequently Asked Questions

Can I hold both CAOS and XISE in my portfolio?

CAOS and XISE have a correlation of -0.37, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CAOS or XISE?

XISE has higher volatility (0.36%) compared to CAOS (0.32%). In terms of maximum drawdown, CAOS dropped -3.89% vs XISE's -6.17%.

Which ETF is better, CAOS or XISE?

On 1-year performance, XISE leads with 6.58% vs 1.62% for CAOS. On fees, CAOS is cheaper at 0.63% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CAOS or XISE?

Over the 1-year period, XISE has performed better with a 6.58% return vs 1.62%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CAOS or XISE?

CAOS is cheaper with a 0.63% expense ratio, compared with 0.85% for XISE.

Which ETF pays a higher dividend yield, CAOS or XISE?

XISE has the higher dividend yield at 5.91%, compared with 0.00% for CAOS.

What is the main difference between CAOS and XISE?

They also come from different issuers: Alpha Architect and FT Vest. Their fees differ too: 0.63% for CAOS and 0.85% for XISE.

Which has better risk-adjusted returns?

XISE currently has the higher Sharpe Ratio (2.26 vs 1.08), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.