Atara Biotherapeutics, Inc. (NASDAQ:ATRA) plunged 54.3% in today's trading, closing at $6.25.
The Healthcare stock traded 1,688,679 shares, 23.5x its average daily volume of 71,875.8 shares.
Atara Biotherapeutics, Inc. has a market capitalization of $128,721,212. The stock has gained 0.0% year-to-date.
