On March 5, the Supreme Court heard oral arguments in Halliburton v. The Erica P. John Fund.  As discussed in previous blog posts, the United States Supreme Court agreed to consider Petitioner Halliburton’s argument to modify or overturn the fraud-on-the market presumption that the Court first articulated more than a quarter century ago in Basic  v. Levinson, 485 U.S. 224, 243-50 (1988).  As our readers know, the fraud-on-the market theory allows investors to bring securities class action suits under Section 10(b) of the 1934 Securities Exchange Act by using a rebuttable presumption that public information about a company is reflected in its stock price because of the efficient markets hypothesis.  Basic significantly relaxes the burden on securities class action plaintiffs because they do not need to show actual reliance on a purported misstatement when deciding to buy or sell stock.  Overturning or modifying Basic would significantly dampen shareholder litigation by making it more difficult to obtain class certification or to survive a motion to dismiss. READ MORE →