Tanya Dmitronow

Tanya Dmitronow

Proskauer Rose LLP

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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

6/24/2014 - Basic v Levinson Class Action Class Certification Fraud Fraud-on-the-Market Halliburton Halliburton v Erica P. John Fund Presumption of Reliance SCOTUS Securities Fraud

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

2/28/2013 - Amgen Amgen Inc. v Connecticut Retirement Plans Class Action Class Certification Rebuttable Presumptions SCOTUS Securities Fraud Securities Litigation

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