S&P 500 ETFs and funds track the S&P 500 Index, a benchmark of 500 of the largest U.S. publicly traded companies weighted by market capitalization. Widely used as a proxy for the overall U.S. stock market, these funds offer broad, low-cost exposure to large-cap American equities across all major sectors and are among the most popular core holdings for long-term investors.

S&P 500

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

Cboe US

PMMY

The PGIM S&P 500 Max Buffer ETF - January is an actively managed defined outcome ETF that seeks SPY price returns up to a cap while aiming to maximize downside protection against SPY losses over its January outcome period before fees and expenses.

PMJA

The PGIM S&P 500 Max Buffer ETF - February seeks returns that match the price return of the SPDR S&P 500 ETF Trust up to a cap while seeking to maximize downside protection against SPY losses over a one-year target outcome period.

PMFB

The Calamos S&P 500 Structured Alt Protection ETF - September seeks upside participation in S&P 500 exposure up to a cap while providing 100% downside protection before fees over the September outcome period through Treasuries and FLEX options.

Symbol	Name	Sharpe Ratio (1Y)	Sharpe Ratio (5Y)	Sharpe Ratio (10Y)	Risk / Return Rank
CPSP	Calamos S&P 500 Structured Alt Protection ETF - Ap...	4.69	—	—	98
PMMY	PGIM S&P 500 Max Buffer ETF - May	3.87	—	—	97
PMJA	PGIM S&P 500 Max Buffer ETF - January	3.27	—	—	94
PMFB	PGIM S&P 500 Max Buffer ETF - February	3.27	—	—	95
CPST	Calamos S&P 500 Structured Alt Protection ETF - Se...	3.21	—	—	94

Top S&P 500 ETFs by Sharpe Ratio

Top S&P 500 ETFs by Sharpe Ratio