CalamosDefined OutcomeCPSO · NYSE Arca

Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)

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Price: $28.32; —25 Sept 2026
Assets: $27.5M; Total net assets
Expense ratio: 0.69%; Category 0.76%
Yield: 0.00%; Trailing distributions

1Y return: 5.9%-4.8%; Category 10.6%
3Y CAGR: —; Category 13.6%
5Y CAGR: —; Category 8.9%

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Calamos S&P 500 Structured Alt Protection ETF - October

Calendar-year returns

Fund only: no comparison series covers this fund's history.

Risk statistics

Five years of daily closes. Risk-free rate 4% a year.

Standard deviation: —
Maximum drawdown: —
Sharpe ratio: —
Sortino ratio: —
Beta: —
Alpha: —
R²: —
Information ratio: —
Upside capture: —
Downside capture: —
Tracking error: —

Trailing returns compared with benchmark
Period	1M	3M	6M	YTD	1Y	3YCAGR	5YCAGR	10YCAGR	LaunchCAGR
ETF	+0.5%	+2.0%	+5.4%	+4.6%	+5.9%	—	—	—	+5.9%
Defined Outcome average	0.6%	3.1%	10.3%	7.9%	10.6%	13.6%	8.9%	—	9.0%
Difference	-0.1%	-1.1%	-4.9%	-3.2%	-4.8%	—	—	—	-3.1%

Holdings

Allocation as last published by the fund.

Asset mix

What the fund is invested in.

Stocks99.8%
Cash0.2%

ETF details

Issuer: Calamos
Category: Alternatives · Defined Outcome
Ticker: CPSO
Exchange: NYSE Arca
Inception: 30 Sept 2024 (2.0 years)
Structure: Exchange Traded Fund
Expense ratio: 0.69% (category 0.76%)
Holdings turnover: 0% (category 4%)
Distribution yield: 0.00%
Beta, 3 years: 0.00
Total net assets: $27.5M

Prices and returns as of 25 Sept 2026; total return with distributions reinvested, before brokerage and taxes. Not investment advice.

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