Short interest in State Street SPDR S&P MIDCAP 400 ETF Trust (ARCA:MDY) increased during the last reporting period, rising from 1.55M to 2.05M. This put -% of the company's publicly available shares short.

Based on the recent average volume of 715.31K shares traded per day, it would take 2.87 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.