In March 2012, Judge Laura Taylor Swain of the United States District Court (Southern District of New York) ruled in favor of Compass Lexecon’s client, the plaintiffs in a securities class action against Pfizer Inc. and certain of its officers, and granted the plaintiffs’ motion for class certification. In support of her decision, the judge cited the declaration of Compass Lexecon’s President, Professor Daniel R. Fischel, and the evidence he presented regarding the volume of trading in Pfizer’s stock and the effect of disclosures on the stock price. We were retained by and worked with Jay Eisenhofer and Geoff Jarvis of Grant & Eisenhofer P.A. and David Kessler of Kessler Topaz Meltzer & Check, LLP. Professor Fischel was supported by Mike Keable, Kevin Dages, David Strahlberg, and Jennifer Milliron in Compass Lexecon’s Chicago office.