Short interest in ProShares UltraShort S&P500 (ARCA:SDS) decreased during the last reporting period, falling from 877.17K to 818.53K. This put -% of the company's publicly available shares short.

Short interest for ProShares UltraShort S&P500 gives investors a sense of the degree to which investors are betting on the decline of ProShares UltraShort S&P500's stock. Short interest data is updated every two weeks.

Based on the recent average volume of 11.12M 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.