In Halliburton v. Erica P. John Fund, the Court upheld the Fraud On The Market presumption of reliance for securities fraud cases but chose to allow defendants to rebut the presumption at the class certification stage of a class action proceeding. The Halliburton holding, along with other sweeping securities rulings from the high Court in recent years reflects an ever more uncertain landscape for securities lawsuits. The Duke Journal of Constitutional Law & Public Policy's 2015 symposium will discuss the coherence of fraud on the market as a body of law, the practical implications of the Court's decision in Halliburton, and alternative enforcement mechanisms for securities fraud. Find more information at http://djclpp.law.duke.edu/symposium/. Sponsored by the Duke Journal of Constitutional Law and Public Policy. For more information, please contact Mariana Estévez at firstname.lastname@example.org.