Short interest in ProShares UltraShort Industrials (ARCA:SIJ) increased during the last reporting period, rising from 1.03K to 29.89K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 39.27K 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.