Short interest in ProShares UltraShort QQQ (ARCA:QID) increased during the last reporting period, rising from 419.41K to 481.31K. This put -% of the company's publicly available shares short.

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

Based on the recent average volume of 3.71M 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.