Short interest in ProShares UltraPro Dow30 (ARCA:UDOW) increased during the last reporting period, rising from 390.07K to 584.73K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 1.92M 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.