Holding: Proof of materiality is not a prerequisite to certification of a securities-fraud class action seeking money damages for alleged violations of Securities and Exchange Commission Rule #10(b) and Rule 1.
Judgment: Affirmed, 6-3, in an opinion by Justice Ginsburg on February 27, 2013. Justice Scalia filed a dissenting opinion. Justice Thomas filed a dissenting opinion in which Justice Kennedy joined and which Justice Scalia joined except for part I-B.
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