

In its June 2014 opinion in Erica P. John Fund, Inc. v. Halliburton Co., the United States Supreme Court held that in connection with a motion for class certification in a securities class action lawsuit, a defendant should have the opportunity to try to rebut the presumption of reliance by showing that the alleged misrepresentation did not impact the defendant company’s share price. The case itself was remanded to the district court for further proceedings in light of the Supreme Court’s ruling. On July 25, 2015, the District Court issued its ruling on the motion for class certification based on the principles the Supreme Court enunciated. A copy of the District Court ruling can be found here.
In the following guest post, Renzo Comolli and Jorge Baez of NERA Economic Consulting take a look at the district court’s ruling on the class certification motion. Renzo and Jorge are both Senior Consultants for NERA.
I would like to thank Renzo and Jorge for their willingness to allow me to publish their article as a guest post here. I welcome guest post submissions from responsible authors on topics of interest to readers of this blog. Please contact me directly if you would like to submit a guest post. Here is Renzo and Jorge’s guest post.
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On 25 July 2015, the United States District Court for the Northern District of Texas issued the much-anticipated ruling on class certification in Erica P. John Fund, Inc. v. Halliburton Co. The economic analysis of price impact was front and center in the Court’s ruling.
This ruling follows the Supreme Court’s decision on price impact that is widely known as Halliburton II. Although this ruling involves facts that are unique to Halliburton’s particular disclosures, attorneys may look at it as a roadmap for guiding economic analysis of price impact in future cases in the post-Halliburton II world.
Continue Reading Guest Post: Update on Economic Analysis of Price Impact in Securities Class Actions Post-Halliburton II






I am pleased to publish below a guest post written by
On Monday, June 11, 2012, the United States Supreme Court granted the petition of Amgen for a writ of certiorari in a securities lawsuit pending against the company. As a result, next term the Court will be addressing the question of whether securities plaintiffs must establish in their class certification petition that the alleged misrepresentation