After oral arguments Wednesday morning at the U.S. Supreme Court in Halliburton v. Erica P. John Fund, I ran into a few securities class action plaintiffs lawyers in the court’s lobby, at the statue of Chief Justice John Marshall. They were looking jaunty indeed. The consensus in their little group was that the justices showed little inclination to toss out the 1988 precedent that has been the foundation of the megabillion-dollar securities class action industry. They regarded Wednesday’s argument as a hopeful portent that classwide securities fraud litigation is likely to survive the Supreme Court’s re-examination of Basic v. Levinson.