Short interest in Calamos S&P 500 Structured Alt Protection ETF August (ARCA:CPSA) increased during the last reporting period, rising from 19.66K to 20.02K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 1.23K shares traded per day, it would take 16.26 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.