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Presumption of Reliance Survives in Securities Cases, But Defendants Can Dispute Price Impact at Class Certification

The U.S. Supreme Court yesterday declined to abandon the efficient-market theory, with its rebuttable presumption of reliance that enables securities class actions to proceed without proof of actual reliance on alleged...more

U.S. Supreme Court Rejects Need to Prove Materiality at Class-Certification Stage in Securities Class Actions

The U.S. Supreme Court ruled on February 27, 2013 that a plaintiff need not prove materiality as a prerequisite to obtaining class certification in a securities class action. The Court's ruling in Amgen Inc. v. Connecticut...more

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