Calamos S&P 500 Structured Alt Protection ETF - September (CPST)

NYSE Arca: CPSTExchange-traded fund from Calamos.

  • Net assets$41.0M
  • Dividend yield0.00%
  • 1-year return+5.42%
  • Holdings1

CPST ETF price chart

CPST quote & trading statistics

CPST performance

Total return · as of October 18, 2026
  • YTD+4.39%
  • 1 year+5.42%
1Y volatility
2.12%
3Y volatility
0.00%
3Y Sharpe ratio
0.00

Returns include reinvested distributions; 3-, 5- and 10-year figures are annualized.

CPST asset allocation

Non-U.S. stocks
99.8%
Cash
0.2%

CPST market-cap breakdown

Mega cap
50.7%
Large cap
37.2%
Mid cap
18.7%
Small cap
0.5%

About Calamos S&P 500 Structured Alt Protection ETF - September

Under normal market conditions, the fund will invest substantially all of its assets in FLexible EXchange Options (FLEX Options) that reference the price performance of the SPDR" S&P 500" ETF Trust (the Underlying ETF). The fund is non-diversified.

CPST ETF FAQ

How much money is in CPST?

Calamos S&P 500 Structured Alt Protection ETF - September has about $41.0M in net assets.

How has CPST performed?

CPST returned +5.42% over the past year, including reinvested distributions.

Does CPST pay dividends?

CPST has a dividend yield of 0.00%.

When was CPST launched?

Calamos S&P 500 Structured Alt Protection ETF - September began trading on August 30, 2024.