Calamos S&P 500 Structured Alt Protection ETF - September

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About CPST

Calamos S&P 500 Structured Alt Protection ETFTM September (the Fund) seeks to provide investment results that, before taking fees and expenses into account, match the positive price return of the SPDR S&P 500 ETF Trust (Underlying ETF) up to a cap of 7.50% (the Cap)

Index-Tracked

What's in this fund

Sectors

As of October 31, 2025

Technology33.56%

Financial Services12.65%

Healthcare11.47%

Consumer Cyclical9.95%

Communication Services8.76%

Industrials7.61%

Consumer Defensive5.72%

Energy3.44%

Utilities2.62%

Real Estate2.25%

Basic Materials1.97%

Top Holdings (114.85% of total assets)

As of October 31, 2025

NameSymbol% Assets

4spy 260831 C 4.45 4spy 260831 C 4.45—103.09%

4spy 260831 C 687.56 4spy 260831 C 687.56—7.80%

4spy 260831 P 645.05 4spy 260831 P 645.05—3.96%

CPST Key Statistics

AUM

31.85M

AUM31.85M

Price-Earnings ratio

—

Price-Earnings ratio—

30-Day yield

—

30-Day yield—

Average volume

994.30

Average volume994.30

High today

—

High today—

Low today

—

Low today—

Open price

—

Open price—

Volume

0.00

Volume0.00

52 Week high

$27.04

52 Week high$27.04

52 Week low

$24.63

52 Week low$24.63

Expense ratio

0.69

Expense ratio0.69

View Prospectus and Reports

Stock Snapshot

Calamos S&P 500 Structured Alt Protection ETF - September(CPST) stock is priced at $27.03, giving the company a market capitalization of 31.75M.

On 2025-12-24, Calamos S&P 500 Structured Alt Protection ETF - September(CPST) shares started trading at —, with intraday highs of — and lows of —.

Trading volume for Calamos S&P 500 Structured Alt Protection ETF - September(CPST) stock has reached 0, versus its average volume of 994.3.

The stock's 52-week range extends from a low of $24.63 to a high of $27.04.