Short interest in Calamos Laddered S&P 500 Structured Alt Protection ETF (BATS:CPSL) increased during the last reporting period, rising from 35.80K to 36.71K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 30.12K shares traded per day, it would take 1.22 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.