Erica P. John Fund, Inc. v. Halliburton Co.

Erica P. John Fund, Inc. v. Halliburton Co.
Argued April 25, 2011
Decided June 6, 2011
Full case nameErica P. John Fund, Inc., fka Archdiocese of Milwaukee Supporting Fund, Inc., Petitioner v. Halliburton Co., et al.
Docket no.09-1403
Citations563 U.S. 804 (more)
131 S. Ct. 2179; 180 L. Ed. 2d 24
ArgumentOral argument
Opinion announcementOpinion announcement
Holding
Securities fraud plaintiffs need not prove loss causation in order to obtain class certification.
Court membership
Chief Justice
John Roberts
Associate Justices
Antonin Scalia · Anthony Kennedy
Clarence Thomas · Ruth Bader Ginsburg
Stephen Breyer · Samuel Alito
Sonia Sotomayor · Elena Kagan
Case opinion
MajorityRoberts, joined by unanimous

Erica P. John Fund, Inc. v. Halliburton Co., 563 U.S. 804 (2011), was a United States Supreme Court case in which the Court held that "securities fraud plaintiffs need not prove loss causation in order to obtain class certification." Their decision cleared the way for class action to proceed against Halliburton over its alleged misrepresentation of facts material to the value of its stock price.