CPSO vs. PMOC

Last updated Jun 4, 2026

CPSO (Calamos S&P 500 Structured Alt Protection ETF - October) and PMOC (PGIM S&P 500 Max Buffer ETF - October) are both Defined Outcome funds. Both are actively managed. Their correlation of 0.87 suggests significant overlap in exposure. CPSO charges 0.69%/yr vs 0.50%/yr for PMOC.

Performance

CPSO vs. PMOC - Performance Comparison

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

Returns By Period

The year-to-date returns for both investments are quite close, with CPSO having a 2.72% return and PMOC slightly higher at 2.83%.

CPSO

• 1D: -0.02%
• 1M: 0.96%
• YTD: 2.72%
• 6M: 3.00%
• 1Y: 7.29%
• 3Y*: —
• 5Y*: —
• 10Y*: —

PMOC

• 1D: 0.06%
• 1M: 0.91%
• YTD: 2.83%
• 6M: 3.26%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CPSO vs. PMOC - Yearly Performance Comparison

	2026 (YTD)	2025
CPSO Calamos S&P 500 Structured Alt Protection ETF - October	2.72%	0.80%
PMOC PGIM S&P 500 Max Buffer ETF - October	2.83%	0.93%

Correlation

The correlation between CPSO and PMOC is 0.87, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 2, 2025	0.87

Return for Risk

CPSO vs. PMOC — Risk / Return Rank

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

CPSO

CPSO Risk / Return Rank: 93
CPSO Sharpe Ratio Rank: 93
CPSO Sortino Ratio Rank: 96
CPSO Omega Ratio Rank: 96
CPSO Calmar Ratio Rank: 88
CPSO Martin Ratio Rank: 93

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.

CPSO vs. PMOC - Risk-Adjusted Trends Comparison

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

	CPSO	PMOC	Difference
Sharpe ratio: Return per unit of total volatility	3.42	—	—
Sortino ratio: Return per unit of downside risk	5.54	—	—
Omega ratio: Gain probability vs. loss probability	1.77	—	—
Calmar ratio: Return relative to maximum drawdown	5.05	—	—
Martin ratio: Return relative to average drawdown	25.43	—	—
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

	CPSO	PMOC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.42	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.96	2.38	-0.43

Drawdowns

CPSO vs. PMOC - Drawdown Comparison

The maximum CPSO drawdown since its inception was -3.23%, which is greater than PMOC's maximum drawdown of -1.50%. Use the drawdown chart below to compare losses from any high point for CPSO and PMOC.

Drawdown Indicators

	CPSO	PMOC	Difference
Max Drawdown Largest peak-to-trough decline	-3.23%	-1.50%	-1.73%
Max Drawdown (1Y) Largest decline over 1 year	-1.45%	—	—
Current Drawdown Current decline from peak	-0.02%	0.00%	-0.02%
Average Drawdown Average peak-to-trough decline	-0.33%	-0.21%	-0.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.29%	—	—

Volatility

Volatility by Period

	CPSO	PMOC	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.33%	—	—
Volatility (6M) Calculated over the trailing 6-month period	1.66%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.14%	2.42%	-0.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.02%	2.42%	+0.60%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.02%	2.42%	+0.60%

CPSO vs. PMOC - Expense Ratio Comparison

CPSO has a 0.69% expense ratio, which is higher than PMOC's 0.50% expense ratio.

Dividends

CPSO vs. PMOC - Dividend Comparison

Neither CPSO nor PMOC has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both CPSO and PMOC in my portfolio?

CPSO and PMOC have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CPSO or PMOC?

On fees, PMOC is cheaper at 0.50% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CPSO or PMOC?

PMOC is cheaper with a 0.50% expense ratio, compared with 0.69% for CPSO.

Which ETF pays a higher dividend yield, CPSO or PMOC?

CPSO and PMOC have nearly identical dividend yields, around 0.00%.

What is the main difference between CPSO and PMOC?

They also come from different issuers: Calamos and PGIM. Their fees differ too: 0.69% for CPSO and 0.50% for PMOC.