Short interest in SPDR Series Trust SPDR S&P Biotech ETF (ARCA:XBI) increased during the last reporting period, rising from 53.83M to 56.67M. This put -% of the company's publicly available shares short.

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

Based on the recent average volume of 8.30M shares traded per day, it would take 6.83 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.