Short interest in SPDR S&P 500 (ARCA:SPY) increased during the last reporting period, rising from 105.32M to 118.38M. This put -% of the company's publicly available shares short.

Short interest for SPDR S&P 500 gives investors a sense of the degree to which investors are betting on the decline of SPDR S&P 500's stock. Short interest data is updated every two weeks.

Based on the recent average volume of 41.53M shares traded per day, it would take 2.85 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.