Short interest in iShares National Muni Bond ETF (ARCA:MUB) increased during the last reporting period, rising from 5.73M to 6.51M. This put -% of the company's publicly available shares short.

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

Based on the recent average volume of 2.61M shares traded per day, it would take 2.5 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.