CPSP vs. PMFB

Last updated Aug 2, 2026

CPSP (Calamos S&P 500 Structured Alt Protection ETF - April) and PMFB (PGIM S&P 500 Max Buffer ETF - February) are both exchange-traded funds - CPSP is a S&P 500 fund actively managed by Calamos, while PMFB is a Defined Outcome fund actively managed by PGIM. Both are actively managed. Over the past year, CPSP returned 6.35% vs 7.01% for PMFB. Their 0.75 correlation means they have sometimes moved together and sometimes differently. CPSP charges 0.69%/yr vs 0.50%/yr for PMFB.

Performance

CPSP vs. PMFB - Performance Comparison

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

Returns By Period

In the year-to-date period, CPSP achieves a 3.70% return, which is significantly higher than PMFB's 3.18% return.

CPSP

• 1D: 0.09%
• 1M: 0.37%
• 6M: 3.28%
• YTD: 3.70%
• 1Y: 6.35%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 7.34%

PMFB

• 1D: 0.22%
• 1M: 0.49%
• 6M: 2.56%
• YTD: 3.18%
• 1Y: 7.01%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 6.47%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
CPSP Calamos S&P 500 Structured Alt Protection ETF - April	$61.45K	$129.38K	$66.05K
PMFB PGIM S&P 500 Max Buffer ETF - February	$4.97K	$5.27K	$4.08K

CPSP vs. PMFB - Yearly Performance Comparison

	2026 (YTD)	2025
CPSP Calamos S&P 500 Structured Alt Protection ETF - April	3.70%	5.96%
PMFB PGIM S&P 500 Max Buffer ETF - February	3.18%	7.47%

Correlation

The correlation between CPSP and PMFB is 0.74, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.74
Correlation (All Time) Calculated using the full available price history since Apr 1, 2025	0.75

The correlation between CPSP and PMFB has been stable across timeframes, ranging from 0.74 to 0.75 - a consistent structural relationship.

Return for Risk

CPSP vs. PMFB — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

CPSP

CPSP Risk / Return Rank: 98
CPSP Sharpe Ratio Rank: 98
CPSP Sortino Ratio Rank: 99
CPSP Omega Ratio Rank: 98
CPSP Calmar Ratio Rank: 99
CPSP Martin Ratio Rank: 99

PMFB

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

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

CPSP vs. PMFB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calamos S&P 500 Structured Alt Protection ETF - April (CPSP) and PGIM S&P 500 Max Buffer ETF - February (PMFB). 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.

	CPSP	PMFB	Difference
Sharpe ratio: Return per unit of total volatility	4.59	3.18	+1.40
Sortino ratio: Return per unit of downside risk	8.37	4.90	+3.47
Omega ratio: Gain probability vs. loss probability	2.13	1.68	+0.45
Calmar ratio: Return relative to maximum drawdown	17.09	5.00	+12.09
Martin ratio: Return relative to average drawdown	65.84	25.30	+40.54

CPSP vs. PMFB - Sharpe Ratio Comparison

The current CPSP Sharpe Ratio is 4.59, which is higher than the PMFB Sharpe Ratio of 3.18. The chart below compares the historical Sharpe Ratios of CPSP and PMFB, 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

CPSP vs. PMFB - Drawdown Comparison

The maximum CPSP drawdown since its inception was -1.73%, smaller than the maximum PMFB drawdown of -2.94%. Use the drawdown chart below to compare losses from any high point for CPSP and PMFB.

Drawdown Indicators

	CPSP	PMFB	Difference
Max Drawdown Largest peak-to-trough decline	-1.73%	-2.94%	+1.21%
Max Drawdown (1Y) Largest decline over 1 year	-0.37%	-1.34%	+0.97%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.09%	-0.35%	+0.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.10%	0.27%	-0.17%

Volatility

CPSP vs. PMFB - Volatility Comparison

Calamos S&P 500 Structured Alt Protection ETF - April (CPSP) and PGIM S&P 500 Max Buffer ETF - February (PMFB) have volatilities of 0.51% and 0.50%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CPSP	PMFB	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.51%	0.50%	+0.01%
Volatility (6M) Calculated over the trailing 6-month period	0.98%	1.59%	-0.61%
Volatility (1Y) Calculated over the trailing 1-year period	1.40%	2.11%	-0.71%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.32%	2.69%	-0.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.32%	2.69%	-0.37%

CPSP vs. PMFB - Expense Ratio Comparison

CPSP has a 0.69% expense ratio, which is higher than PMFB's 0.50% expense ratio.

Dividends

CPSP vs. PMFB - Dividend Comparison

Neither CPSP nor PMFB has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both CPSP and PMFB in my portfolio?

CPSP and PMFB have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CPSP or PMFB?

CPSP has higher volatility (0.51%) compared to PMFB (0.50%). In terms of maximum drawdown, CPSP dropped -1.73% vs PMFB's -2.94%.

Which ETF is better, CPSP or PMFB?

On 1-year performance, PMFB leads with 7.01% vs 6.35% for CPSP. On fees, PMFB is cheaper at 0.50% 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, CPSP or PMFB?

Over the 1-year period, PMFB has performed better with a 7.01% return vs 6.35%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CPSP or PMFB?

PMFB is cheaper with a 0.50% expense ratio, compared with 0.69% for CPSP.

Which ETF pays a higher dividend yield, CPSP or PMFB?

CPSP and PMFB have nearly identical dividend yields, around 0.00%.

What is the main difference between CPSP and PMFB?

CPSP is categorized as S&P 500, while PMFB is Defined Outcome. They also come from different issuers: Calamos and PGIM. Their fees differ too: 0.69% for CPSP and 0.50% for PMFB.

Which has better risk-adjusted returns?

CPSP currently has the higher Sharpe Ratio (4.59 vs 3.18), 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.