Short interest in ProShares UltraShort Lehman 20 Year Treasury (ARCA:TBT) decreased during the last reporting period, falling from 1.54M to 1.40M. This put -% of the company's publicly available shares short.

Based on the recent average volume of 362.29K shares traded per day, it would take 3.86 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.