Short interest in Calamos ETF Trust Calamos S&P 500 Structured Alt Protection ETF September (ARCA:CPST) decreased during the last reporting period, falling from 8.91K to 7.35K. This put -% of the company's publicly available shares short.

Short interest in Calamos ETF Trust Calamos S&P 500 Structured Alt Protection ETF September Corp (ARCX:CPST) decreased during the last reporting period, falling from 280.30M to 275.20M. This put 1.17% of the company's publicly available shares short.

Based on the recent average volume of 1.51K shares traded per day, it would take 4.86 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.