CPSM vs. RSDE

Last updated Jun 4, 2026

CPSM (Calamos S&P 500 Structured Alt Protection ETF - May) and RSDE (FT Vest U.S. Equity Equal Weight Buffer ETF - December) are both Defined Outcome funds. CPSM is actively managed, while RSDE is passively managed. Over the past year, CPSM returned 5.88% vs 13.27% for RSDE. A 0.58 correlation means they provide meaningful diversification when combined. CPSM charges 0.69%/yr vs 0.85%/yr for RSDE.

Performance

CPSM vs. RSDE - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) and FT Vest U.S. Equity Equal Weight Buffer ETF - December (RSDE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CPSM achieves a 2.27% return, which is significantly lower than RSDE's 6.09% return.

CPSM

• 1D: -0.06%
• 1M: 0.71%
• YTD: 2.27%
• 6M: 2.72%
• 1Y: 5.88%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RSDE

• 1D: -0.13%
• 1M: 2.27%
• YTD: 6.09%
• 6M: 6.71%
• 1Y: 13.27%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CPSM vs. RSDE - Yearly Performance Comparison

	2026 (YTD)	2025	2024
CPSM Calamos S&P 500 Structured Alt Protection ETF - May	2.27%	7.21%	-0.17%
RSDE FT Vest U.S. Equity Equal Weight Buffer ETF - December	6.09%	8.96%	-0.25%

Correlation

The correlation between CPSM and RSDE is 0.50, 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	0.50
Correlation (All Time) Calculated using the full available price history since Dec 24, 2024	0.58

The correlation between CPSM and RSDE has been stable across timeframes, ranging from 0.50 to 0.58 - a consistent structural relationship.

Return for Risk

CPSM vs. RSDE — Risk / Return Rank

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

CPSM

CPSM Risk / Return Rank: 97
CPSM Sharpe Ratio Rank: 94
CPSM Sortino Ratio Rank: 97
CPSM Omega Ratio Rank: 96
CPSM Calmar Ratio Rank: 98
CPSM Martin Ratio Rank: 98

RSDE

RSDE Risk / Return Rank: 52
RSDE Sharpe Ratio Rank: 49
RSDE Sortino Ratio Rank: 51
RSDE Omega Ratio Rank: 48
RSDE Calmar Ratio Rank: 56
RSDE Martin Ratio Rank: 57

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.

CPSM vs. RSDE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) and FT Vest U.S. Equity Equal Weight Buffer ETF - December (RSDE). 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.

	CPSM	RSDE	Difference
Sharpe ratio: Return per unit of total volatility	3.78	1.66	+2.11
Sortino ratio: Return per unit of downside risk	6.33	2.44	+3.89
Omega ratio: Gain probability vs. loss probability	1.84	1.30	+0.54
Calmar ratio: Return relative to maximum drawdown	13.01	2.76	+10.25
Martin ratio: Return relative to average drawdown	61.11	9.94	+51.17
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CPSM vs. RSDE - Sharpe Ratio Comparison

The current CPSM Sharpe Ratio is 3.78, which is higher than the RSDE Sharpe Ratio of 1.66. The chart below compares the historical Sharpe Ratios of CPSM and RSDE, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	CPSM	RSDE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.78	1.66	+2.11
Sharpe Ratio (All Time) Calculated using the full available price history	1.54	0.95	+0.59

Drawdowns

CPSM vs. RSDE - Drawdown Comparison

The maximum CPSM drawdown since its inception was -5.19%, smaller than the maximum RSDE drawdown of -10.77%. Use the drawdown chart below to compare losses from any high point for CPSM and RSDE.

Drawdown Indicators

	CPSM	RSDE	Difference
Max Drawdown Largest peak-to-trough decline	-5.19%	-10.77%	+5.58%
Max Drawdown (1Y) Largest decline over 1 year	-0.45%	-4.83%	+4.38%
Current Drawdown Current decline from peak	-0.06%	-0.13%	+0.07%
Average Drawdown Average peak-to-trough decline	-0.20%	-1.29%	+1.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.10%	1.34%	-1.24%

Volatility

CPSM vs. RSDE - Volatility Comparison

The current volatility for Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) is 0.35%, while FT Vest U.S. Equity Equal Weight Buffer ETF - December (RSDE) has a volatility of 1.43%. This indicates that CPSM experiences smaller price fluctuations and is considered to be less risky than RSDE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CPSM	RSDE	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.35%	1.43%	-1.08%
Volatility (6M) Calculated over the trailing 6-month period	1.14%	5.09%	-3.95%
Volatility (1Y) Calculated over the trailing 1-year period	1.57%	8.03%	-6.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.10%	11.04%	-5.94%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.10%	11.04%	-5.94%

CPSM vs. RSDE - Expense Ratio Comparison

CPSM has a 0.69% expense ratio, which is lower than RSDE's 0.85% expense ratio.

Dividends

CPSM vs. RSDE - Dividend Comparison

Neither CPSM nor RSDE has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both CPSM and RSDE in my portfolio?

CPSM and RSDE have a correlation of 0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CPSM or RSDE?

RSDE has higher volatility (1.43%) compared to CPSM (0.35%). In terms of maximum drawdown, CPSM dropped -5.19% vs RSDE's -10.77%.

Which ETF is better, CPSM or RSDE?

On 1-year performance, RSDE leads with 13.27% vs 5.88% for CPSM. On fees, CPSM is cheaper at 0.69% per year. On volatility, CPSM has been the lower-risk option at 0.35%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CPSM or RSDE?

Over the 1-year period, RSDE has performed better with a 13.27% return vs 5.88%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CPSM or RSDE?

CPSM is cheaper with a 0.69% expense ratio, compared with 0.85% for RSDE.

Which ETF pays a higher dividend yield, CPSM or RSDE?

CPSM and RSDE have nearly identical dividend yields, around 0.00%.

What is the main difference between CPSM and RSDE?

They also come from different issuers: Calamos and FT Vest. Their fees differ too: 0.69% for CPSM and 0.85% for RSDE.

Which has better risk-adjusted returns?

CPSM currently has the higher Sharpe Ratio (3.78 vs 1.66), 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.