Nessim Mezrahi
Stephen Sigrist

In the following guest post, Nessim Mezrahi and Stephen Sigrist discuss their analysis of Rule 10b-5 private securities fraud litigation in 2019 and 2020 against U.S. Issuers, and the impact of recent guidance by the 2nd and 7th Circuits on Halliburton II stock price impact defenses at the class certification stage.  Mezrahi is cofounder and CEO and Sigrist is a data scientist at SAR.  SAR’s January 8, 2021 press release discussing a more detailed 4Q 2020 securities class action analysis can be found here. A version of this article previously was published on Law360. I would like to thank Nessim and Stephen for allowing me to publish their article as a guest post on this site. I welcome guest post submissions from responsible authors on topics of interest to this blog’s readers. Please contact me directly if you would like to submit a guest post. Here is the authors’ article.
Continue Reading Guest Post: Halliburton II Price Impact Defenses Can Limit Severity on Deficient Exchange Act Claims