Short interest in Vanguard Morningstar Mid-Cap ETF (ARCA:VO) increased during the last reporting period, rising from 1.22M to 1.77M. This put -% of the company's publicly available shares short.

Based on the recent average volume of 2.60M 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.