BUFH vs. CPSM

Last updated Jun 26, 2026

BUFH (FT Vest Laddered Max Buffer ETF) and CPSM (Calamos S&P 500 Structured Alt Protection ETF - May) are both Defined Outcome funds. Over the past year, BUFH returned 6.28% vs 4.97% for CPSM. A 0.53 correlation means they provide meaningful diversification when combined. BUFH charges 0.95%/yr vs 0.69%/yr for CPSM.

Performance

BUFH vs. CPSM - Performance Comparison

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

Returns By Period

In the year-to-date period, BUFH achieves a 2.30% return, which is significantly higher than CPSM's 1.91% return.

BUFH

• 1D: 0.00%
• 1M: 0.00%
• YTD: 2.30%
• 6M: 2.28%
• 1Y: 6.28%
• 3Y*: —
• 5Y*: —
• 10Y*: —

CPSM

• 1D: 0.02%
• 1M: -0.26%
• YTD: 1.91%
• 6M: 1.91%
• 1Y: 4.97%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BUFH vs. CPSM - Yearly Performance Comparison

	2026 (YTD)	2025
BUFH FT Vest Laddered Max Buffer ETF	2.30%	3.81%
CPSM Calamos S&P 500 Structured Alt Protection ETF - May	1.91%	2.93%

Correlation

The correlation between BUFH and CPSM is 0.53, 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	0.53
Correlation (All Time) Calculated using the full available price history since Jun 25, 2025	0.53

The correlation between BUFH and CPSM has been stable across timeframes, ranging from 0.53 to 0.53 - a consistent structural relationship.

Return for Risk

BUFH vs. CPSM — Risk / Return Rank

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

BUFH

BUFH Risk / Return Rank: 91
BUFH Sharpe Ratio Rank: 90
BUFH Sortino Ratio Rank: 94
BUFH Omega Ratio Rank: 94
BUFH Calmar Ratio Rank: 84
BUFH Martin Ratio Rank: 92

CPSM

CPSM Risk / Return Rank: 96
CPSM Sharpe Ratio Rank: 94
CPSM Sortino Ratio Rank: 96
CPSM Omega Ratio Rank: 95
CPSM Calmar Ratio Rank: 97
CPSM Martin Ratio Rank: 97

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.

BUFH vs. CPSM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FT Vest Laddered Max Buffer ETF (BUFH) and Calamos S&P 500 Structured Alt Protection ETF - May (CPSM). 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.

	BUFH	CPSM	Difference
Sharpe ratio: Return per unit of total volatility	2.66	3.06	-0.40
Sortino ratio: Return per unit of downside risk	4.16	4.88	-0.72
Omega ratio: Gain probability vs. loss probability	1.59	1.65	-0.06
Calmar ratio: Return relative to maximum drawdown	4.11	10.20	-6.08
Martin ratio: Return relative to average drawdown	19.34	41.43	-22.09

BUFH vs. CPSM - Sharpe Ratio Comparison

The current BUFH Sharpe Ratio is 2.66, which is comparable to the CPSM Sharpe Ratio of 3.06. The chart below compares the historical Sharpe Ratios of BUFH and CPSM, 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

BUFH vs. CPSM - Drawdown Comparison

The maximum BUFH drawdown since its inception was -1.53%, smaller than the maximum CPSM drawdown of -5.19%. Use the drawdown chart below to compare losses from any high point for BUFH and CPSM.

Drawdown Indicators

	BUFH	CPSM	Difference
Max Drawdown Largest peak-to-trough decline	-1.53%	-5.19%	+3.66%
Max Drawdown (1Y) Largest decline over 1 year	-1.53%	-0.49%	-1.04%
Current Drawdown Current decline from peak	-0.26%	-0.42%	+0.16%
Average Drawdown Average peak-to-trough decline	-0.18%	-0.20%	+0.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.33%	0.12%	+0.21%

Volatility

BUFH vs. CPSM - Volatility Comparison

FT Vest Laddered Max Buffer ETF (BUFH) and Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) have volatilities of 0.62% and 0.64%, 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

	BUFH	CPSM	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.62%	0.64%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	1.96%	1.16%	+0.80%
Volatility (1Y) Calculated over the trailing 1-year period	2.37%	1.63%	+0.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.37%	5.04%	-2.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.37%	5.04%	-2.67%

BUFH vs. CPSM - Expense Ratio Comparison

BUFH has a 0.95% expense ratio, which is higher than CPSM's 0.69% expense ratio.

Dividends

BUFH vs. CPSM - Dividend Comparison

Neither BUFH nor CPSM has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both BUFH and CPSM in my portfolio?

BUFH and CPSM have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BUFH or CPSM?

CPSM has higher volatility (0.64%) compared to BUFH (0.62%). In terms of maximum drawdown, BUFH dropped -1.53% vs CPSM's -5.19%.

Which ETF is better, BUFH or CPSM?

On 1-year performance, BUFH leads with 6.28% vs 4.97% for CPSM. On fees, CPSM is cheaper at 0.69% 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, BUFH or CPSM?

Over the 1-year period, BUFH has performed better with a 6.28% return vs 4.97%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BUFH or CPSM?

CPSM is cheaper with a 0.69% expense ratio, compared with 0.95% for BUFH.

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

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

What is the main difference between BUFH and CPSM?

They also come from different issuers: First Trust and Calamos. Their fees differ too: 0.95% for BUFH and 0.69% for CPSM.

Which has better risk-adjusted returns?

CPSM currently has the higher Sharpe Ratio (3.06 vs 2.66), 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.