Short interest in iShares Prime Money Market ETF (NYSE:PMMF) increased during the last reporting period, rising from 20.99K to 32.73K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 175.03K 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.