Short interest in ProShares Ultra Materials (ARCA:UYM) increased during the last reporting period, rising from 3.36K to 8.46K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 6.75K shares traded per day, it would take 1.25 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.