Short Interest in Calamos S&P 500 Structured Alt Protection ETF – September (NYSEARCA:CPST) Drops By 50.0%

Posted by Jessica Moore on Jul 15th, 2026

Calamos S&P 500 Structured Alt Protection ETF – September (NYSEARCA:CPST – Get Free Report) was the recipient of a significant decrease in short interest in the month of June. As of June 30th, there was short interest totaling 2,281 shares, a decrease of 50.0% from the June 15th total of 4,562 shares. Based on an average daily trading volume, of 1,351 shares, the short-interest ratio is presently 1.7 days. Approximately 0.2% of the company’s stock are short sold.

Calamos S&P 500 Structured Alt Protection ETF – September Stock Performance

Calamos S&P 500 Structured Alt Protection ETF – September stock remained flat at $27.91 during midday trading on Wednesday. The company’s stock had a trading volume of 255 shares, compared to its average volume of 1,782. The stock has a market cap of $33.49 million, a P/E ratio of -14.10 and a beta of 0.19. The stock’s fifty day moving average is $27.74 and its 200-day moving average is $27.37. Calamos S&P 500 Structured Alt Protection ETF – September has a one year low of $26.17 and a one year high of $27.93.

Hedge Funds Weigh In On Calamos S&P 500 Structured Alt Protection ETF – September

A hedge fund recently bought a new position in Calamos S&P 500 Structured Alt Protection ETF – September stock. Sound Income Strategies LLC bought a new stake in Calamos S&P 500 Structured Alt Protection ETF – September (NYSEARCA:CPST – Free Report) during the fourth quarter, according to the company in its most recent Form 13F filing with the Securities & Exchange Commission. The fund bought 1,608 shares of the company’s stock, valued at approximately $44,000. Sound Income Strategies LLC owned 0.13% of Calamos S&P 500 Structured Alt Protection ETF – September at the end of the most recent quarter. 12.12% of the stock is currently owned by institutional investors and hedge funds.

Calamos S&P 500 Structured Alt Protection ETF – September Company Profile

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The Calamos S&P 500 Structured Alt Protection ETF – September (CPST) is an exchange-traded fund that mostly invests in large cap equity. 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). CPST was launched on Sep 3, 2024 and is issued by Calamos.