SPMV vs. CPST

Last updated Jun 23, 2026

SPMV (Invesco S&P 500 Minimum Variance ETF) and CPST (Calamos S&P 500 Structured Alt Protection ETF - September) are both exchange-traded funds - SPMV is a S&P 500 fund tracking the S&P 500 Minimum Volatility Index, while CPST is a Defined Outcome fund tracking the MerQube Cap Protect US Lrg Cap PR Index - Sep. Both are passively managed. A 0.66 correlation means they provide meaningful diversification when combined. SPMV charges 0.10%/yr vs 0.69%/yr for CPST.

Performance

SPMV vs. CPST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P 500 Minimum Variance ETF (SPMV) and Calamos S&P 500 Structured Alt Protection ETF - September (CPST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

SPMV

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CPST

• 1D: 0.10%
• 1M: 0.45%
• YTD: 2.83%
• 6M: 2.79%
• 1Y: 7.56%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SPMV vs. CPST - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SPMV Invesco S&P 500 Minimum Variance ETF	0.87%	11.69%	0.13%
CPST Calamos S&P 500 Structured Alt Protection ETF - September	2.83%	6.73%	1.97%

Correlation

The correlation between SPMV and CPST is 0.54, 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	0.54
Correlation (All Time) Calculated using the full available price history since Sep 3, 2024	0.66

The correlation between SPMV and CPST shifts across timeframes, from 0.54 (1 year) to 0.66 (all time), reflecting how their relationship changes across market environments.

Return for Risk

SPMV vs. CPST — Risk / Return Rank

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

SPMV

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

CPST

CPST Risk / Return Rank: 95
CPST Sharpe Ratio Rank: 95
CPST Sortino Ratio Rank: 97
CPST Omega Ratio Rank: 96
CPST Calmar Ratio Rank: 90
CPST Martin Ratio Rank: 95

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.

SPMV vs. CPST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P 500 Minimum Variance ETF (SPMV) and Calamos S&P 500 Structured Alt Protection ETF - September (CPST). 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.

	SPMV	CPST	Difference
Sharpe ratio: Return per unit of total volatility	—	3.63	—
Sortino ratio: Return per unit of downside risk	—	6.02	—
Omega ratio: Gain probability vs. loss probability	—	1.83	—
Calmar ratio: Return relative to maximum drawdown	—	5.34	—
Martin ratio: Return relative to average drawdown	—	28.83	—

Drawdowns

Drawdown Indicators

	SPMV	CPST	Difference
Max Drawdown Largest peak-to-trough decline	—	-3.79%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-1.42%	—
Current Drawdown Current decline from peak	—	0.00%	—
Average Drawdown Average peak-to-trough decline	—	-0.34%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.26%	—

Volatility

Volatility by Period

	SPMV	CPST	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.44%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.60%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	2.09%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	3.34%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	3.34%	—

SPMV vs. CPST - Expense Ratio Comparison

SPMV has a 0.10% expense ratio, which is lower than CPST's 0.69% expense ratio.

Dividends

SPMV vs. CPST - Dividend Comparison

Neither SPMV nor CPST has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
CPST Calamos S&P 500 Structured Alt Protection ETF - September	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPMV Invesco S&P 500 Minimum Variance ETF	1.45%	1.53%	1.53%	2.28%	1.79%	1.28%	1.71%	3.13%	2.11%	1.72%

Frequently Asked Questions

Can I hold both SPMV and CPST in my portfolio?

SPMV and CPST have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, SPMV or CPST?

On fees, SPMV is cheaper at 0.10% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, SPMV or CPST?

SPMV is cheaper with a 0.10% expense ratio, compared with 0.69% for CPST.

Which ETF pays a higher dividend yield, SPMV or CPST?

SPMV has the higher dividend yield at 1.45%, compared with 0.00% for CPST.

What is the main difference between SPMV and CPST?

SPMV is categorized as S&P 500, while CPST is Defined Outcome. SPMV tracks S&P 500 Minimum Volatility Index, while CPST tracks MerQube Cap Protect US Lrg Cap PR Index - Sep. They also come from different issuers: Invesco and Calamos. Their fees differ too: 0.10% for SPMV and 0.69% for CPST.