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Calamos S&P 500 Structured Alt Protection ETF - September

This ETF provides exposure to Large Cap US Equities

CPST performance and flow charts

Last update 8/31/2026 at 1:30 PM
Live
Closed
Last price
$28.13
+$0.03 (+0.09%) Yesterday

Performance

0.00.10.20.30.4%Jul 31Aug 7Aug 14Aug 21Aug 28

Flows

0 M0.5 M1 M1.5 M
1 day price range
$28.07
$28.13
52 week price range
$26.49
$28.10
1W perf
+0.07%
YTD perf
+3.73%
YTD flows
+$10K
AuM
$33M
E/R
0.69%
TTM yield
-
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Historic performance and flows

Data as of August 31, 2026
1M3MYTD1Y3Y5Y
Perf.+0.39%+1.19%+3.73%+6.08%
Flows+$701K+$701K+$10K+$6M--
Data as of August 31, 2026

Get all the metrics on this page, and more, through a reliable ETF data feed

Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Characteristics

This fund is actively managed; it does not track an index. This share class generates a stream of income by distributing dividends.

Management strategyActive
StrategyOptions Strategies
ProviderCalamos Investments
N° of holdings0
Dividend policyDistributing
Trailing 12m distribution yield
Join for free
Inception dateSeptember 3, 2024
ESGNo
TrackinsightTrackinsight

More data and info about CPST on Trackinsight

Exposure

Data as of January 1, 1970
The CPST ETF is actively managed, so it doesn't track an index. We're working to retrieve all detailed holding information.

Trading data

Last sale
8/31/2026 at 1:30 PM
$28.13
Previous close
$28.10
Consolidated volume
08/31/2026
Join for free
Average volume
30 days
Join for free
Average discount or premium
30 days
Join for free
Average Bid/Ask spread
30 days
Join for free

Volatility and drawdown

3M1Y3Y5Y
Volatility+1.26%+2.02%
Max drawdown
-0.36%-1.40%
Max drawdown duration
8d42dN/AN/A
Time to recover
3d10dN/AN/A
Frequently asked questions about CPST

What type of ETF is CPST?

CPST is a Active ETF that provides exposure to Equity assets. It is managed by Calamos Investments.

What does CPST invest in?

This ETF provides exposure to Large Cap US Equities. It is part of the segment: Options Strategies.

What is the expense ratio of CPST?

The total expense ratio (TER) of CPST is 0.69%, representing the annual fee charged by the fund manager.

When was CPST launched?

CPST was launched on September 3, 2024, marking its entry into the ETF market.

Who is the issuer of CPST?

CPST is issued by Calamos Investments.

What is the AUM of CPST?

As of August 31, 2026, CPST manages $33.02 M, reflecting the total assets held in the fund.

How has CPST performed recently?

As of August 31, 2026, CPST delivered a return of 0.39% over the past month (1M performance), 1.19% over the past three months (3M), and 3.73% year-to-date (YTD).

What are the recent fund flows for CPST?

As of August 31, 2026, CPST has seen net flows of +$701K in the past month (1M flow) and +$10K year-to-date (YTD).

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