Short interest in ProShares Ultra 20+ Year Treasury (ARCA:UBT) increased during the last reporting period, rising from 173.08K to 193.71K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 108.80K shares traded per day, it would take 1.78 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.