Short interest in Atara Biotherapeutics Inc (NASDAQ:ATRA) decreased during the last reporting period, falling from 706.47K to 674.63K. This put 11.86% of the company's publicly available shares short.

Short interest in Atara Biotherapeutics Corp (XNAS:ATRA) decreased during the last reporting period, falling from 280.30M to 275.20M. This put 1.17% of the company's publicly available shares short.

Based on the recent average volume of 120.98K shares traded per day, it would take 5.58 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.