Short interest in UltraPro Short Dow30 (ARCA:SDOW) increased during the last reporting period, rising from 802.85K to 873.09K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 3.94M shares traded per day, it would take 1 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.