In Amgen Inc. v. Connecticut Retirement Plans & Trust Funds, No. 11-1085, 2013 WL 691001 (Feb. 27, 2013), the Supreme Court of the United States decided a significant issue concerning the requirements for class certification in actions based on alleged misrepresentations in violation of the federal securities laws. Under Amgen, a plaintiff in such an action is not required to prove the materiality of the alleged misrepresentation in order to obtain class certification. The Amgen decision will make it at least marginally easier for plaintiffs to obtain class certification in some Circuits.
Amgen is likely to be influential in ways that go well beyond its immediate holding. For example, the various opinions in Amgen debate the continuing vitality of the Supreme Court’s decision in Basic Inc. v. Levinson, 485 U.S. 224 (1988), which established the fundamental structure enabling claims under the federal securities laws to be litigated as class actions. These and other implications of the decision are discussed below. Readers not requiring a summary of the framework established in Basic may wish to go directly to section 2.