Law Commons^™

Kill Cammer: Securities Litigation Without Junk Science, J. B. Heaton

William & Mary Business Law Review

Securities litigation is a hotbed of junk science concerning market efficiency. This Article explains why and suggests a way out. In its 1988 decision in Basic v. Levinson, the Supreme Court endorsed the fraud on the market presumption for securities traded in an efficient market. Faced with the task of determining market efficiency, courts throughout the nation embraced the ad hoc speculations of a first-mover district court that proclaimed, in Cammer v. Bloom, how to allege (and presumably prove) facts that would do just that. The Cammer court’s analysis did not rely on financial economics for its notions, but instead …