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)

What's in this fund

Sectors

As of November 30, 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 (113.63% of total assets)

As of November 30, 2025

NameSymbol% Assets

4spy 260831 C 4.45 4spy 260831 C 4.45—102.83%

4spy 260831 C 687.56 4spy 260831 C 687.56—7.19%

4spy 260831 P 645.05 4spy 260831 P 645.05—3.61%

CPST Key Statistics

AUM

31.92M

AUM31.92M

Price-Earnings ratio

—

Price-Earnings ratio—

30-Day yield

—

30-Day yield—

Average volume

1.72K

Average volume1.72K

High today

—

High today—

Low today

—

Low today—

Open price

—

Open price—

Volume

0.00

Volume0.00

52 Week high

$27.16

52 Week high$27.16

52 Week low

$24.63

52 Week low$24.63

Expense ratio

0.69

Expense ratio0.69

View Prospectus and Reports

Stock Snapshot

With a market cap of 31.87M, Calamos S&P 500 Structured Alt Protection ETF - September(CPST) trades at $27.13.

On 2026-01-23, Calamos S&P 500 Structured Alt Protection ETF - September(CPST) stock opened at —, reached a high of —, and a low of —.

Calamos S&P 500 Structured Alt Protection ETF - September(CPST) shares are trading with a volume of 0, against a daily average of 1.72K.

During the past year, Calamos S&P 500 Structured Alt Protection ETF - September(CPST) stock moved between $24.63 at its lowest and $27.16 at its peak.