Short interest in ProShares Ultra QQQ (ARCA:QLD) increased during the last reporting period, rising from 932.16K to 1.87M. This put -% of the company's publicly available shares short.

Based on the recent average volume of 3.91M 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.