On Monday, AbbVie Inc ABBV stock plunged after two trials investigating emraclidine as a once-daily, oral monotherapy treatment for adults with schizophrenia failed two Phase 2 trials.The studies did not meet their primary endpoint of showing a statistically significant improvement in the change from baseline in the Positive and Negative Syndrome Scale (PANSS) total score compared to the placebo group at week 6.Truist says due to the failure, Bristol Myers Squibb & Co’s BMY Cobenfy (xanomeline and trospium ...