Short interest in Atara Biotherapeutics Inc (NASDAQ:ATRA) decreased during the last reporting period, falling from 282.52K to 209.29K. This put 3.52% of the company's publicly available shares short.

Based on the recent average volume of 87.23K shares traded per day, it would take 2.4 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.