Date,Symbol,Name,Last Sale,Net Change,% Change,Market Cap,Country,IPO Year,Volume,Sector,Industry 20250729,ATRA,Atara Biotherapeutics Inc. Common Stock,$11.73,-0.08,-0.677%,69927116.0,United States,2014.0,47590,Health Care,Biotechnology: Biological Products (No Diagnostic Substances) 20250730,ATRA,Atara Biotherapeutics Inc. Common Stock,$12.11,0.38,3.24%,72192445.0,United States,2014.0,90409,Health Care,Biotechnology: Biological Products (No Diagnostic Substances) 20250731,ATRA,Atara Biotherapeutics Inc. Common Stock,$11.52,-0.59,-4.872%,68675224.0,United States,2014.0,40604,Health Care,Biotechnology: Biological Products (No Diagnostic Substances)