The U.S. Supreme Court issued its decision earlier today in Halliburton Co. v. Erica P. John Fund, Inc., No. 13-317 (Halliburton II), its most highly-anticipated class-action-related decision of the October 2013 term. Those who were hoping for a sea-change in securities class action jurisprudence were left disappointed, as the Court, in an opinion authored by Chief Justice Roberts, declined to overrule its 25-year-old decision in Basic Inc. v. Levinson, 485 U.S. 224 (1988). Rather than abolish the framework established in Basic, which provides a means for securities fraud plaintiffs to satisfy the elements of class certification through a class-wide presumption of reliance on material misrepresentations, the Court instead held that a defendant can rebut the presumption by demonstrating, at the class certification stage, that the alleged misrepresentations did not actually have any impact on the stock price. In doing so, the Court reversed the Fifth Circuit Court of Appeals’ decision barring the defendant from offering evidence of non-impact on stock price at the class certification stage.
The Court distinguished its earlier decision in the same case, Erica P. John Fund, Inc. v. Halliburton Co., 563 U.S. ___ (2011) (Halliburton I), in which it held that a plaintiff should not be required to prove materiality of the alleged misrepresentation at the class certification stage. The distinction between the issue of materiality of a misrepresentation (a merits issue not appropriate for the class certification phase according to Halliburton I), and the issue of whether a misrepresentation actually had a common price impact on the stock (a proper class certification question according to Halliburton II) is the key to making sense of the Court’s decision today. As Justice Roberts stated:
[P]rice impact differs from materiality in a crucial respect. Given that the other Basic prerequisites must still be proved at the class certification stage, the common issue of materiality can be left to the merits stage without risking the certification of classes in which individual issues will end up overwhelming common ones. And because materiality is a discrete issue that can be resolved in isolation from the other prerequisites, it can be wholly confined to the merits stage.
Price impact is different. The fact that a misrepresentation “was reflected in the market price at the time of [the]transaction”—that it had price impact—is “Basic’s fundamental premise.” Halliburton I, 563 U. S., at ___ (slip op., at 7). It thus has everything to do with the issue of predominance at the class certification stage. That is why, if reliance is to be shown through the Basic presumption,the publicity and market efficiency prerequisites must be proved before class certification. Without proof of those prerequisites, the fraud-on-the-market theory underlying the presumption completely collapses, rendering class certification inappropriate.
Halliburton II, slip op., at 21-22. In other words, a merits question that is indisputedly common to the class should not be considered prior to class certification, but a merits question that also bears on whether the issues to be resolved at trial are truly common or individualized in the first place must be considered as part of the class certification decision.