Short interest in iShares S&P 100 ETF (ARCA:OEF) increased during the last reporting period, rising from 158.26K to 173.73K. This put -% of the company's publicly available shares short.

Short interest for iShares S&P 100 ETF gives investors a sense of the degree to which investors are betting on the decline of iShares S&P 100 ETF's stock. Short interest data is updated every two weeks.

Based on the recent average volume of 158.04K shares traded per day, it would take 1.1 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.