Short interest in Calamos S&P 500 Structured Alt Protection ETF - April (ARCA:CPSP) increased during the last reporting period, rising from 3.79K to 7.77K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 169.00 shares traded per day, it would take 45.99 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.