One error in an extensive economic analysis does not automatically call into question the entire expert opinion, the 2nd Circuit Court of Appeals recently said in the context of a securities fraud lawsuit involving the drug giant Pfizer. With this pronouncement the appeals court resuscitated a class action that had died after the district court excluded the plaintiffs' loss causation and damages expert under Daubert based on errors in the expert's event study. Deprived of the testimony, the plaintiffs were unable to prove two critical elements of their claim. Read more >>