Calamos S&P 500 Structured Alt Protection ETF – September (NYSEARCA:CPST) Stock Short Interest Report for October

Posted by Lauren Steadman on Oct 30th, 2026

Calamos S&P 500 Structured Alt Protection ETF – September (NYSEARCA:CPST – Get Free Report) was the target of a large decrease in short interest during the month of October. As of October 15th, there was short interest totaling 5,635 shares, a decrease of 51.8% from the September 30th total of 11,693 shares. Approximately 0.4% of the company’s stock are short sold. Based on an average daily trading volume, of 13,294 shares, the days-to-cover ratio is presently 0.4 days.

Institutional Inflows and Outflows

A hedge fund recently raised its position in Calamos S&P 500 Structured Alt Protection ETF – September stock. Burkett Financial Services LLC boosted its holdings in shares of Calamos S&P 500 Structured Alt Protection ETF – September (NYSEARCA:CPST – Free Report) by 34.4% in the third quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission (SEC). The firm owned 4,598 shares of the company’s stock after acquiring an additional 1,178 shares during the period. Burkett Financial Services LLC owned 0.35% of Calamos S&P 500 Structured Alt Protection ETF – September worth $129,000 at the end of the most recent reporting period. Institutional investors and hedge funds own 12.12% of the company’s stock.

Calamos S&P 500 Structured Alt Protection ETF – September Stock Down 0.3%

CPST traded down $0.09 on Friday, hitting $28.15. The company’s stock had a trading volume of 680 shares, compared to its average volume of 3,679. The company’s 50 day simple moving average is $28.13 and its 200-day simple moving average is $27.65. The firm has a market cap of $42.23 million, a P/E ratio of -14.22 and a beta of 0.19. Calamos S&P 500 Structured Alt Protection ETF – September has a 12 month low of $26.68 and a 12 month high of $28.30.

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

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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.