Short interest in iShares U.S. Basic Materials ETF (ARCA:IYM) increased during the last reporting period, rising from 28.48K to 74.76K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 251.55K 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.