CPSJ vs. APRB

Last updated Jun 4, 2026

CPSJ (Calamos S&P 500 Structured Alt Protection ETF - July) and APRB (Aptus April Buffer ETF) are both Defined Outcome funds. CPSJ is passively managed, while APRB is actively managed. A 0.78 correlation means they provide meaningful diversification when combined. CPSJ charges 0.69%/yr vs 0.25%/yr for APRB.

Performance

CPSJ vs. APRB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calamos S&P 500 Structured Alt Protection ETF - July (CPSJ) and Aptus April Buffer ETF (APRB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CPSJ achieves a 2.61% return, which is significantly lower than APRB's 4.77% return.

CPSJ

• 1D: 0.04%
• 1M: 0.70%
• YTD: 2.61%
• 6M: 2.98%
• 1Y: 7.54%
• 3Y*: —
• 5Y*: —
• 10Y*: —

APRB

• 1D: -0.11%
• 1M: 1.69%
• YTD: 4.77%
• 6M: 5.32%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CPSJ vs. APRB - Yearly Performance Comparison

	2026 (YTD)	2025
CPSJ Calamos S&P 500 Structured Alt Protection ETF - July	2.61%	1.05%
APRB Aptus April Buffer ETF	4.77%	2.48%

Correlation

The correlation between CPSJ and APRB is 0.78, 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 Oct 15, 2025	0.78

Return for Risk

CPSJ vs. APRB — Risk / Return Rank

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

CPSJ

CPSJ Risk / Return Rank: 94
CPSJ Sharpe Ratio Rank: 92
CPSJ Sortino Ratio Rank: 96
CPSJ Omega Ratio Rank: 96
CPSJ Calmar Ratio Rank: 90
CPSJ Martin Ratio Rank: 95

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.

CPSJ vs. APRB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calamos S&P 500 Structured Alt Protection ETF - July (CPSJ) and Aptus April Buffer ETF (APRB). 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.

	CPSJ	APRB	Difference
Sharpe ratio: Return per unit of total volatility	3.30	—	—
Sortino ratio: Return per unit of downside risk	5.44	—	—
Omega ratio: Gain probability vs. loss probability	1.76	—	—
Calmar ratio: Return relative to maximum drawdown	5.47	—	—
Martin ratio: Return relative to average drawdown	30.62	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	CPSJ	APRB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.30	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.63	2.00	-0.37

Drawdowns

CPSJ vs. APRB - Drawdown Comparison

The maximum CPSJ drawdown since its inception was -5.36%, which is greater than APRB's maximum drawdown of -4.59%. Use the drawdown chart below to compare losses from any high point for CPSJ and APRB.

Drawdown Indicators

	CPSJ	APRB	Difference
Max Drawdown Largest peak-to-trough decline	-5.36%	-4.59%	-0.77%
Max Drawdown (1Y) Largest decline over 1 year	-1.38%	—	—
Current Drawdown Current decline from peak	0.00%	-0.11%	+0.11%
Average Drawdown Average peak-to-trough decline	-0.45%	-0.74%	+0.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.25%	—	—

Volatility

Volatility by Period

	CPSJ	APRB	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.33%	—	—
Volatility (6M) Calculated over the trailing 6-month period	1.67%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.32%	5.98%	-3.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.59%	5.98%	-1.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.59%	5.98%	-1.39%

CPSJ vs. APRB - Expense Ratio Comparison

CPSJ has a 0.69% expense ratio, which is higher than APRB's 0.25% expense ratio.

Dividends

CPSJ vs. APRB - Dividend Comparison

Neither CPSJ nor APRB has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both CPSJ and APRB in my portfolio?

CPSJ and APRB have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CPSJ or APRB?

On fees, APRB is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CPSJ or APRB?

APRB is cheaper with a 0.25% expense ratio, compared with 0.69% for CPSJ.

Which ETF pays a higher dividend yield, CPSJ or APRB?

CPSJ and APRB have nearly identical dividend yields, around 0.00%.

What is the main difference between CPSJ and APRB?

They also come from different issuers: Calamos and Aptus Capital Advisors. Their fees differ too: 0.69% for CPSJ and 0.25% for APRB.