Calamos Investments is a U.S.-based asset manager known for structured protection, defined outcome, and convertible securities strategies. Calamos ETFs offer equity exposure with built-in downside protection through options-based buffering strategies, alongside convertible bond and income-oriented products. The Calamos ETF list includes defined outcome, convertible, and alternative income strategies across multiple market exposures. This page lets you compare Calamos ETFs on expense ratio, historical returns, dividend yield, max drawdown, Sharpe ratio, Sortino ratio, and Risk/Return Score — useful for evaluating structured protection, convertible, and income strategies for portfolio construction, risk management, or long-term investing.

Calamos

The Calamos S&P 500 Structured Alt Protection ETF - April provides 100% downside protection against negative S&P 500 returns over a one-year outcome period, with upside participation up to a defined cap. The fund invests in FLEX options referencing the SPDR S&P 500 ETF Trust and resets annually each April.

NYSEArca

CPSP

The Calamos Russell 2000 Structured Alt Protection ETF - April provides 100% downside protection against negative Russell 2000 returns over a one-year outcome period, with upside participation up to a defined cap. The fund invests in FLEX options referencing the iShares Russell 2000 ETF and resets annually each April.

CPRA

Calamos S&P 500 Structured Alt Protection ETF - March is a defined outcome ETF that seeks positive price-return exposure to the S&P 500 up to a stated cap while providing 100% downside protection before fees and expenses over a one-year March outcome period. The fund uses FLEX options to pursue its structured protection strategy.

CPSR

Calamos Nasdaq-100 Structured Alt Protection ETF - March is a defined outcome ETF that seeks positive price-return exposure to the Nasdaq-100 up to a stated cap while providing 100% downside protection before fees and expenses over a one-year March outcome period. The fund uses FLEX options to pursue its structured protection strategy.

CPNM

Calamos S&P 500 Structured Alt Protection ETF - January seeks to match the positive price return of the S&P 500 up to a defined cap while providing 100% downside protection over a one-year outcome period before fees and expenses.

Symbol	Name	Sharpe Ratio (1Y)	Sharpe Ratio (5Y)	Sharpe Ratio (10Y)	Risk / Return Rank
CPSP	Calamos S&P 500 Structured Alt Protection ETF - Ap...	4.78	—	—	98
CPRA	Calamos Russell 2000 Structured Alt Protection ETF...	4.05	—	—	98
CPSR	Calamos S&P 500 Structured Alt Protection ETF - Ma...	3.59	—	—	96
CPNM	Calamos Nasdaq-100 Structured Alt Protection ETF -...	3.52	—	—	96
CPSY	Calamos S&P 500 Structured Alt Protection ETF - Ja...	3.36	—	—	95

Top Calamos ETFs by Sharpe Ratio

Top Calamos ETFs by Sharpe Ratio