Halliburton v. Erica P. John Fund -- discontented stockholders allege that at the turn of the century (from June 1999 to December 2001) Halliburton misrepresented significant facts about the company's financial health. Significantly, the execs undervalued an asbestos liability claim. The Erica P. John Fund is an investment fund created to support the Archdiocese of Milwaukee. It bought stock in Halliburton during the period of the alleged deception. In September 2007, EPJ moved to certify as a class all investors who bought the common stock of Halliburton during the period of the alleged deception, a period that came to a screeching end with a stunning write-off of $4 billion. In support of this motion EPJ invoked the notion of a "fraud on the market," and presented an expert report by Jane Nettesheim of the Stanford Consulting Group. Netteshein contended that the market in Halliburton stock is efficient, and accordingly th...