Calamos S&P 500 Structured Alt Protection ETF – October (NYSEARCA:CPSO) Stock Short Interest Drops 53.6%

Posted by Jessica Moore on Oct 30th, 2026

Calamos S&P 500 Structured Alt Protection ETF – October (NYSEARCA:CPSO – Get Free Report) saw a significant decrease in short interest in October. As of October 15th, there was short interest totaling 9,022 shares, a decrease of 53.6% from the September 30th total of 19,424 shares. Currently, 0.8% of the shares of the stock are sold short. Based on an average daily trading volume, of 14,180 shares, the short-interest ratio is currently 0.6 days.

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

Shares of Calamos S&P 500 Structured Alt Protection ETF – October stock traded down $0.10 during midday trading on Friday, reaching $28.45. 6,455 shares of the company’s stock traded hands, compared to its average volume of 2,598. The company has a market cap of $31.30 million, a price-to-earnings ratio of -264.09 and a beta of 0.18. Calamos S&P 500 Structured Alt Protection ETF – October has a 52 week low of $26.73 and a 52 week high of $28.58. The company’s 50 day simple moving average is $28.35 and its 200 day simple moving average is $27.73.

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

A number of large investors have recently added to or reduced their stakes in the company. Tucker Asset Management LLC acquired a new stake in Calamos S&P 500 Structured Alt Protection ETF – October during the 2nd quarter valued at $50,000. Verdence Capital Advisors LLC acquired a new stake in shares of Calamos S&P 500 Structured Alt Protection ETF – October during the third quarter valued at about $648,000. Finally, Calamos Advisors LLC boosted its position in Calamos S&P 500 Structured Alt Protection ETF – October by 24.2% during the 1st quarter. Calamos Advisors LLC now owns 356,032 shares of the company’s stock worth $9,613,000 after buying an additional 69,386 shares during the period.

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

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The Calamos S&P 500 Structured Alt Protection ETF – October (CPSO) is an exchange-traded fund that mostly invests in large cap equity. The fund seeks to track the return of the SPDR S&P 500 ETF Trust (SPY), to a cap, with 100% downside hedge over a one-year outcome period. The actively managed fund holds FLEX options to obtain exposure CPSO was launched on Oct 1, 2024 and is issued by Calamos.