Browse everything: Tickers A–Z · Issuers · Comparisons · Tags
CPST ETF — Calamos S&P 500 Structured Alt Protection ETF - September
Calamos S&P 500 Structured Alt Protection ETF - September (CPST)
Updated October 16, 2026.
CPST is an ETF. its expense ratio is 0.69%. Total return is 13.7% over the past 2.1 years, 28.2 points behind SPY at 41.9%.
Calamos S&P 500 Structured Alt Protection ETF - September is an ETF that invests substantially all of its assets in flexible exchange options referencing the SPDR S&P 500 ETF Trust, providing structured exposure to the S&P 500 with downside protection features. The fund does not currently distribute income and carries an expense ratio of 0.69%. It appeals to equity investors seeking S&P 500 exposure with defined risk management through options strategies rather than traditional buy-and-hold equity investing.
CPST holdings and sector exposure
Holdings are not available for this snapshot.
CPST performance versus SPY
Price and return data through 2026-10-16.
Total return is 13.7% over the past 2.1 years, 28.2 points behind SPY at 41.9%. Over the past year its total return — price change plus distributions reinvested — is 5.1%. Its deepest 1-year drawdown was 1.4%.
| Window | Total return | CAGR |
|---|---|---|
| 1M | 0.6% | — |
| 3M | 0.8% | — |
| 6M | 2.7% | — |
| YTD | 4.1% | — |
| 1Y | 5.1% | — |
| 2Y CAGR | — | 5.80% |
| Since inception (2.1 years) | 13.7% | 6.20% |
CPST key facts
- Issuer
- Calamos Investments
- Asset type
- ETF
- Asset class
- Equity
- Inception date
- 09/03/2024
- Expense ratio
- 0.69%
- Distribution frequency
- None
- Last close
- $28.13 (as of 2026-10-16)
- AUM
- $41,045,971
- Average volume
- 4266.0
- Beta
- 0.1352
How Dividend Vision calculates yield and returns
Distribution rate (the posted rate) uses calculation basis unavailable. Issuer rates can use a different denominator and date, including ex-date NAV. Trailing-12-month yield is the sum of split-adjusted cash distributions with ex-dates in the last 12 months, divided by the published price. It lags a recent raise or cut. Total return uses split-adjusted close with distributions reinvested on the ex-dividend date (a modeling convention, not the cash-settlement date) from the first stored bar on or after inception through the latest bar, compared with the same window on the benchmark. That is the security's total return, not your personal gain/loss.
Yield and safety methodology · Distribution rate methodology · Distribution Safety Score methodology
Sources and review
Primary sources: Calamos Investments; prices and distributions from Dividend Vision, derived from vendor EOD data.
Reviewed by Bert Sweet, CEO and Co-owner of Dividend Vision. Methodology: Distribution Safety Score.
CPST risks and drawbacks
Total return has trailed SPY over the available window. The deepest 1-year drawdown on record here is 1.4%.
Who may consider CPST — and who may not
It is a weaker fit for investors who need monthly cash flow (CPST does not currently distribute); investors whose main goal is matching SPY total return. This is educational context, not a recommendation to buy or sell.
More on CPST
Frequently asked questions
Does CPST pay monthly?
No. CPST does not currently distribute.
What is CPST's expense ratio?
CPST's expense ratio is 0.69%.
When does CPST pay a dividend?
CPST does not currently distribute.
How has CPST performed?
Total return is 13.7% over the past 2.1 years, 28.2 points behind SPY at 41.9%. Over the past year its total return — price change plus distributions reinvested — is 5.1%. Its deepest 1-year drawdown was 1.4%.
More securities from Calamos Investments.
Tickers
Holdings as-of date unavailable.
| Ticker | Name | Weight |
|---|
See how this investment would fit into your portfolio.