Atara Biotherapeutics Inc (ATRA)

Atara Biotherapeutics Stock (ATRA) dropped by 80.17% from $1.21 to $0.24 in the trading on Thursday November 9, 2023. The reason why ATRA stock down today is due to primary result of the study. Atara said that a Phase 2 study for its drug ATA188 in the treatment of multiple sclerosis failed to meet its primary endpoint. Atara said it is evaluating the data to decide the next steps for the program, but anticipates stopping the study as no treatment benefit was observed.