CBTY vs. PMMY

Last updated Jun 4, 2026

CBTY (Calamos Bitcoin 80 Series Structured Alt Protection ETF - July) and PMMY (PGIM S&P 500 Max Buffer ETF - May) are both Defined Outcome funds. CBTY is passively managed, while PMMY is actively managed. At a 0.31 correlation, their price movements are largely independent. CBTY charges 0.69%/yr vs 0.50%/yr for PMMY.

Performance

CBTY vs. PMMY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calamos Bitcoin 80 Series Structured Alt Protection ETF - July (CBTY) and PGIM S&P 500 Max Buffer ETF - May (PMMY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CBTY achieves a -11.11% return, which is significantly lower than PMMY's 2.19% return.

CBTY

• 1D: -0.03%
• 1M: -2.89%
• YTD: -11.11%
• 6M: -14.47%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

PMMY

• 1D: -0.04%
• 1M: 0.79%
• YTD: 2.19%
• 6M: 2.74%
• 1Y: 5.98%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CBTY vs. PMMY - Yearly Performance Comparison

	2026 (YTD)	2025
CBTY Calamos Bitcoin 80 Series Structured Alt Protection ETF - July	-11.11%	-10.93%
PMMY PGIM S&P 500 Max Buffer ETF - May	2.19%	2.85%

Correlation

The correlation between CBTY and PMMY is 0.31, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jul 9, 2025	0.31

Return for Risk

CBTY vs. PMMY — Risk / Return Rank

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

PMMY

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

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.

CBTY vs. PMMY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calamos Bitcoin 80 Series Structured Alt Protection ETF - July (CBTY) and PGIM S&P 500 Max Buffer ETF - May (PMMY). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	CBTY	PMMY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	5.35	—
Sharpe Ratio (All Time) Calculated using the full available price history	-1.33	4.56	-5.89

Drawdowns

CBTY vs. PMMY - Drawdown Comparison

The maximum CBTY drawdown since its inception was -26.68%, which is greater than PMMY's maximum drawdown of -0.36%. Use the drawdown chart below to compare losses from any high point for CBTY and PMMY.

Drawdown Indicators

	CBTY	PMMY	Difference
Max Drawdown Largest peak-to-trough decline	-26.68%	-0.36%	-26.32%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.36%	—
Current Drawdown Current decline from peak	-26.68%	-0.04%	-26.64%
Average Drawdown Average peak-to-trough decline	-14.52%	-0.04%	-14.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.07%	—

Volatility

Volatility by Period

	CBTY	PMMY	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.36%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.87%	—
Volatility (1Y) Calculated over the trailing 1-year period	17.11%	1.12%	+15.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.11%	1.39%	+15.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.11%	1.39%	+15.72%

CBTY vs. PMMY - Expense Ratio Comparison

CBTY has a 0.69% expense ratio, which is higher than PMMY's 0.50% expense ratio.

Dividends

CBTY vs. PMMY - Dividend Comparison

CBTY's dividend yield for the trailing twelve months is around 1.65%, while PMMY has not paid dividends to shareholders.

Position	TTM	2025
CBTY Calamos Bitcoin 80 Series Structured Alt Protection ETF - July	1.65%	1.47%
PMMY PGIM S&P 500 Max Buffer ETF - May	0.00%	0.00%

Frequently Asked Questions

Can I hold both CBTY and PMMY in my portfolio?

CBTY and PMMY have a correlation of 0.31, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CBTY or PMMY?

On fees, PMMY 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, CBTY or PMMY?

PMMY is cheaper with a 0.50% expense ratio, compared with 0.69% for CBTY.

Which ETF pays a higher dividend yield, CBTY or PMMY?

CBTY has the higher dividend yield at 1.65%, compared with 0.00% for PMMY.

What is the main difference between CBTY and PMMY?

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