APXM vs. CPSU

Last updated Jun 23, 2026

APXM (FT Vest U.S. Equity Max Buffer ETF - April) and CPSU (Calamos S&P 500 Structured Alt Protection ETF - June) are both Defined Outcome funds. Both are actively managed. Over the past year, APXM returned 5.14% vs 5.83% for CPSU. A 0.64 correlation means they provide meaningful diversification when combined. APXM charges 0.85%/yr vs 0.69%/yr for CPSU.

Performance

APXM vs. CPSU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FT Vest U.S. Equity Max Buffer ETF - April (APXM) 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

The year-to-date returns for both stocks are quite close, with APXM having a 2.01% return and CPSU slightly lower at 1.92%.

APXM

• 1D: -0.05%
• 1M: 0.14%
• YTD: 2.01%
• 6M: 2.14%
• 1Y: 5.14%
• 3Y*: —
• 5Y*: —
• 10Y*: —

CPSU

• 1D: -0.07%
• 1M: -0.23%
• YTD: 1.92%
• 6M: 2.05%
• 1Y: 5.83%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

APXM vs. CPSU - Yearly Performance Comparison

	2026 (YTD)	2025
APXM FT Vest U.S. Equity Max Buffer ETF - April	2.01%	3.41%
CPSU Calamos S&P 500 Structured Alt Protection ETF - June	1.92%	4.35%

Correlation

The correlation between APXM and CPSU is 0.63, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.63
Correlation (All Time) Calculated using the full available price history since Jun 2, 2025	0.64

The correlation between APXM and CPSU has been stable across timeframes, ranging from 0.63 to 0.64 - a consistent structural relationship.

Return for Risk

APXM vs. CPSU — Risk / Return Rank

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

APXM

APXM Risk / Return Rank: 97
APXM Sharpe Ratio Rank: 97
APXM Sortino Ratio Rank: 98
APXM Omega Ratio Rank: 98
APXM Calmar Ratio Rank: 96
APXM Martin Ratio Rank: 98

CPSU

CPSU Risk / Return Rank: 94
CPSU Sharpe Ratio Rank: 92
CPSU Sortino Ratio Rank: 95
CPSU Omega Ratio Rank: 96
CPSU Calmar Ratio Rank: 91
CPSU Martin Ratio Rank: 96

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.

APXM vs. CPSU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FT Vest U.S. Equity Max Buffer ETF - April (APXM) 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.

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.

	APXM	CPSU	Difference
Sharpe ratio: Return per unit of total volatility	4.29	3.09	+1.20
Sortino ratio: Return per unit of downside risk	7.06	4.83	+2.23
Omega ratio: Gain probability vs. loss probability	2.22	1.77	+0.45
Calmar ratio: Return relative to maximum drawdown	8.62	5.69	+2.93
Martin ratio: Return relative to average drawdown	61.17	31.11	+30.06

APXM vs. CPSU - Sharpe Ratio Comparison

The current APXM Sharpe Ratio is 4.29, which is higher than the CPSU Sharpe Ratio of 3.09. The chart below compares the historical Sharpe Ratios of APXM and CPSU, 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

APXM vs. CPSU - Drawdown Comparison

The maximum APXM drawdown since its inception was -0.60%, smaller than the maximum CPSU drawdown of -1.03%. Use the drawdown chart below to compare losses from any high point for APXM and CPSU.

Drawdown Indicators

	APXM	CPSU	Difference
Max Drawdown Largest peak-to-trough decline	-0.60%	-1.03%	+0.43%
Max Drawdown (1Y) Largest decline over 1 year	-0.60%	-1.03%	+0.43%
Current Drawdown Current decline from peak	-0.17%	-0.54%	+0.37%
Average Drawdown Average peak-to-trough decline	-0.04%	-0.09%	+0.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.08%	0.19%	-0.11%

Volatility

APXM vs. CPSU - Volatility Comparison

The current volatility for FT Vest U.S. Equity Max Buffer ETF - April (APXM) is 0.73%, while Calamos S&P 500 Structured Alt Protection ETF - June (CPSU) has a volatility of 0.90%. This indicates that APXM experiences smaller price fluctuations and is considered to be less risky than CPSU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	APXM	CPSU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.73%	0.90%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	1.04%	1.61%	-0.57%
Volatility (1Y) Calculated over the trailing 1-year period	1.21%	1.90%	-0.69%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.35%	1.88%	-0.53%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.35%	1.88%	-0.53%

APXM vs. CPSU - Expense Ratio Comparison

APXM has a 0.85% expense ratio, which is higher than CPSU's 0.69% expense ratio.

Dividends

APXM vs. CPSU - Dividend Comparison

Neither APXM nor CPSU has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both APXM and CPSU in my portfolio?

APXM and CPSU have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, APXM or CPSU?

CPSU has higher volatility (0.90%) compared to APXM (0.73%). In terms of maximum drawdown, APXM dropped -0.60% vs CPSU's -1.03%.

Which ETF is better, APXM or CPSU?

On 1-year performance, CPSU leads with 5.83% vs 5.14% for APXM. On fees, CPSU is cheaper at 0.69% per year. On volatility, APXM has been the lower-risk option at 0.73%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, APXM or CPSU?

Over the 1-year period, CPSU has performed better with a 5.83% return vs 5.14%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, APXM or CPSU?

CPSU is cheaper with a 0.69% expense ratio, compared with 0.85% for APXM.

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

APXM and CPSU have nearly identical dividend yields, around 0.00%.

What is the main difference between APXM and CPSU?

They also come from different issuers: First Trust and Calamos. Their fees differ too: 0.85% for APXM and 0.69% for CPSU.

Which has better risk-adjusted returns?

APXM currently has the higher Sharpe Ratio (4.29 vs 3.09), 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.