(February 12, 2018, 4:50 PM EST) -- SAN DIEGO — Lead plaintiffs in a securities class action lawsuit are not required to show a revelation of fraud to prove loss causation, a federal judge in California ruled Feb. 1 in denying the defendants’ motion to dismiss (Brad Mauss v. NuVasive Inc., et al., No. 13-2005, S.D. Calif., 2018 U.S. Dist. LEXIS 16941)....