Short interest in ProShares UltraPro S&P 500 (ARCA:UPRO) decreased during the last reporting period, falling from 1.65M to 1.46M. This put -% of the company's publicly available shares short.

Based on the recent average volume of 1.75M 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.