XOEF vs. CPSU

Last updated Jun 6, 2026

XOEF (iShares S&P 500 ex S&P 100 ETF) and CPSU (Calamos S&P 500 Structured Alt Protection ETF - June) are both exchange-traded funds - XOEF is a S&P 500 fund tracking the S&P 500 Ex-S&P 100 Select Index, while CPSU is a Defined Outcome fund actively managed by Calamos. XOEF is passively managed, while CPSU is actively managed. A 0.68 correlation means they provide meaningful diversification when combined. XOEF charges 0.20%/yr vs 0.69%/yr for CPSU.

Performance

XOEF vs. CPSU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares S&P 500 ex S&P 100 ETF (XOEF) and Calamos S&P 500 Structured Alt Protection ETF - June (CPSU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, XOEF achieves a 12.43% return, which is significantly higher than CPSU's 1.88% return.

XOEF

• 1D: -1.83%
• 1M: 1.36%
• YTD: 12.43%
• 6M: 12.72%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CPSU

• 1D: -0.38%
• 1M: -0.04%
• YTD: 1.88%
• 6M: 2.37%
• 1Y: 6.10%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

XOEF vs. CPSU - Yearly Performance Comparison

	2026 (YTD)	2025
XOEF iShares S&P 500 ex S&P 100 ETF	12.43%	4.15%
CPSU Calamos S&P 500 Structured Alt Protection ETF - June	1.88%	2.94%

Correlation

The correlation between XOEF and CPSU is 0.68, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jul 10, 2025	0.68

Return for Risk

XOEF vs. CPSU — Risk / Return Rank

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

CPSU

CPSU Risk / Return Rank: 95
CPSU Sharpe Ratio Rank: 94
CPSU Sortino Ratio Rank: 96
CPSU Omega Ratio Rank: 97
CPSU Calmar Ratio Rank: 92
CPSU Martin Ratio Rank: 97

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.

XOEF vs. CPSU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares S&P 500 ex S&P 100 ETF (XOEF) and Calamos S&P 500 Structured Alt Protection ETF - June (CPSU). 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.

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

Sharpe Ratios by Period

	XOEF	CPSU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	3.47	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.49	3.45	-1.95

Drawdowns

XOEF vs. CPSU - Drawdown Comparison

The maximum XOEF drawdown since its inception was -7.66%, which is greater than CPSU's maximum drawdown of -1.03%. Use the drawdown chart below to compare losses from any high point for XOEF and CPSU.

Drawdown Indicators

	XOEF	CPSU	Difference
Max Drawdown Largest peak-to-trough decline	-7.66%	-1.03%	-6.63%
Max Drawdown (1Y) Largest decline over 1 year	—	-1.03%	—
Current Drawdown Current decline from peak	-1.83%	-0.55%	-1.28%
Average Drawdown Average peak-to-trough decline	-1.31%	-0.07%	-1.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.16%	—

Volatility

Volatility by Period

	XOEF	CPSU	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.49%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.44%	—
Volatility (1Y) Calculated over the trailing 1-year period	12.73%	1.77%	+10.96%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.73%	1.76%	+10.97%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.73%	1.76%	+10.97%

XOEF vs. CPSU - Expense Ratio Comparison

XOEF has a 0.20% expense ratio, which is lower than CPSU's 0.69% expense ratio.

Dividends

XOEF vs. CPSU - Dividend Comparison

XOEF's dividend yield for the trailing twelve months is around 0.80%, while CPSU has not paid dividends to shareholders.

Position	TTM	2025
CPSU Calamos S&P 500 Structured Alt Protection ETF - June	0.00%	0.00%
XOEF iShares S&P 500 ex S&P 100 ETF	0.80%	0.63%

Frequently Asked Questions

Can I hold both XOEF and CPSU in my portfolio?

XOEF and CPSU have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, XOEF or CPSU?

On fees, XOEF is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, XOEF or CPSU?

XOEF is cheaper with a 0.20% expense ratio, compared with 0.69% for CPSU.

Which ETF pays a higher dividend yield, XOEF or CPSU?

XOEF has the higher dividend yield at 0.80%, compared with 0.00% for CPSU.

What is the main difference between XOEF and CPSU?

XOEF is categorized as S&P 500, while CPSU is Defined Outcome. They also come from different issuers: iShares and Calamos. Their fees differ too: 0.20% for XOEF and 0.69% for CPSU.