Second Circuit Analysis of Fraud-on-the-Market Doctrine

Brad S. Karp is Partner and Chairman at Paul, Weiss, Rifkind, Wharton & Garrison LLP. This post is based on a Paul, Weiss publication by Mr. Karp, Susanna BuergelAndrew EhrlichDaniel Kramer, Jane O’Brien, and Audra SolowayRelated research from the Program on Corporate Governance includes Rethinking Basic by Lucian Bebchuk and Allen Ferrell (discussed on the Forum here).

In Waggoner v. Barclays PLC, No. 16-1912 (2d Cir. Nov. 6, 2017), the Second Circuit held that shareholder plaintiffs seeking class certification under the presumption of reliance conferred by the fraud-on-the-market doctrine need not offer direct evidence of market efficiency so long as other indicia of market efficiency are established. This ruling will make it more difficult for public companies defending securities fraud class actions to oppose class certification unless certain indirect evidence of inefficiency is also present.


In June 2014, the New York Attorney General (“NYAG”) filed suit against Barclays under New York’s Martin Act, alleging that Barclays concealed information about the operation of its private “dark pool” trading system, LX. Following news of the lawsuit, Barclays’ stock price fell 7.38 percent. Shortly thereafter, investors in Barclays’ American Depository Shares (“ADS”) filed a putative securities fraud class action in the Southern District of New York.

The complaint alleges that Barclays made material misrepresentations and omissions regarding LX specifically and Barclays’ business practices and risk controls generally. On defendants’ motion to dismiss, the district court dismissed claims based on the general statements as inactionable puffery, but let stand claims based on certain statements about LX, such as assurances that Barclays took steps to protect clients from aggressive high frequency trading, restricted predatory traders’ access to clients, and eliminated traders who continued to behave in a predatory manner. Adopting the “price maintenance” theory, plaintiffs argued that the alleged LX misstatements maintained preexisting inflation in Barclays’ ADS price and that such inflation dissipated upon the filing of the NYAG complaint.

On plaintiffs’ motion for class certification, plaintiffs argued that class-wide reliance could be established both under Basic’s fraud-on-the-market presumption as well as the Affiliated Ute presumption of reliance for omissions.

In response, defendants argued that both presumptions were inapplicable. In an effort to rebut the Basic presumption, defendants adduced expert evidence showing that the alleged misstatements did not cause a stock price increase. Defendants argued that plaintiffs therefore could not demonstrate a cause-and-effect relationship between information and price—and thus could not satisfy the fifth Cammer factor (“Cammer 5”). Defendants also introduced an expert opinion that the filing of an NYAG enforcement action, rather than a “correction” of the LX statements, explained the back-end price decline.

The district court certified the class, finding both presumptions applicable. As to the Basic presumption, the district court did not rely upon plaintiffs’ event study, which had been subject to substantial criticism by defendants’ expert. Instead, the court concluded that, for exchange-traded companies like Barclays, “indirect evidence of market efficiency … will typically be sufficient to satisfy the Basic presumption,” and thus “there is no need to demonstrate efficiency through … an event study.” The district court also rejected defendants’ rebuttal, finding that defendants had failed to “foreclose” the price maintenance theory and failed to show that the stock price drop was not caused “at least in part” by the alleged correction of the LX statements.

Defendants filed a Rule 23(f) petition with the Second Circuit. The Second Circuit granted defendants leave to appeal. On appeal, defendants argued, among other things, that (1) the Affiliated Ute presumption did not apply because plaintiffs’ claims were based on affirmative misstatements; (2) plaintiffs failed to prove the market efficiency prerequisite to the Basic presumption; and (3) the district court erroneously rejected defendants’ rebuttal of the Basic presumption.

The Second Circuit’s Decision

In an opinion by Judge Droney, joined by Judges Kearse and Lohier, the Second Circuit affirmed the district court’s class certification order. The court agreed with defendants’ challenge to the Affiliated Ute presumption, but rejected defendants’ challenges to the Basic presumption and affirmed the class certification order on that basis.

Affiliated Ute Does Not Apply to Claims Based Primarily on Misstatements

The Second Circuit agreed with defendants that the district court should not have given plaintiffs the benefit of the Affiliated Ute presumption. Adhering to two of its prior decisions, the court held that Affiliated Ute does not apply to claims based “primarily” on affirmative misstatements, as opposed to omissions. Since plaintiffs’ claims concerned misstatements and not omissions, the district court improperly applied the Affiliated Ute presumption of reliance.

To Invoke the Basic Presumption, Plaintiffs Need Not Offer Direct Cause-and-Effect Evidence of Market Efficiency If the Other Cammer/Krogman Factors Are Present

The Second Circuit then turned to the district court’s application of the presumption of reliance under the fraud-on-the-market doctrine. Building on its recent decision in In re Petrobras Securities Litigation, the Second Circuit held that a plaintiff need not always offer direct event study evidence of a cause-and-effect relationship between new information and stock price movements before satisfying its burden to prove market efficiency at the class certification stage. Rather, in a case in which all of the other Cammer/Krogman factors weigh in plaintiff’s favor, a plaintiff may generally omit such direct evidence of cause and effect.

In reaching this conclusion, the Second Circuit emphasized, “we do not imply that direct evidence of price impact under Cammer 5 is never important,” and cited with approval its earlier rulings recognizing that Cammer 5 “has been considered the most important Cammer factor in certain cases because it assesses ‘the essence of an efficient market and the foundation for the fraud on the market theory.’”

Applying the law to the facts before it, the Second Circuit then applied a deferential standard to conclude that the district court’s decision not to require direct evidence was not outside “the range of permissible decisions” and thus was not reversible.

Defendants’ Rebuttal of the Basic Presumption Must Carry a Burden of Persuasion

The Second Circuit further rejected defendants’ attempted rebuttal of the Basic presumption. Defendants were required to carry both a burden of production and a burden of persuasion. The court reconciled this holding with Fed. R. Evid. 301, which provides that presumptions generally do not alter the burden of persuasion, on the ground that the Basic presumption is a judicially created “substantive doctrine,” and thus well within the rule’s carve out for situations in which a federal statute “provides otherwise.”

Defendants had attempted to rebut the presumption with (i) plaintiffs’ event study, which showed that the alleged LX misstatements did not increase Barclays’ stock price and (ii) an expert report attributing Barclays’ stock price decline (at least in part) to the consequences of the NYAG enforcement action, rather than the “correction” of the LX statements. As to the former, the court affirmed the district court’s finding that defendants failed to meet their burden of excluding plaintiffs’ theory that the alleged misstatements had maintained artificial inflation that was already in the ADS price during the class period, under the “price maintenance” theory. As to the latter, the court affirmed on the basis that defendants failed to exclude the possibility that the enforcement action and alleged correction both contributed to the price decline, and thus that the NYAG action was, in part, a correction of earlier misstatements.


Together with the Second Circuit’s recent decision in Petrobras (client alert here), the Barclays decision serves to lower the obstacles a shareholder plaintiff must overcome to obtain class certification. The indirect Cammer/Krogman factors are often easily satisfied in cases against exchange-traded issuers. While the Second Circuit denied that it was establishing a per se rule that the “securities of large publicly traded companies always trade in an efficient market,” and the Barclays defendants may well seek further review too.

The Second Circuit’s decision in Barclays appears to create a circuit split with the Eighth Circuit’s decision in IBEW Local 98 Pension Fund Best Buy Co. that “overwhelming evidence” was the same evidence that the Second Circuit rejected here: that the stock price did not increase after the misstatements at issue (i.e., on the “front end”). Best Buy held that such a front-end showing was sufficient to rebut a speculative claim of price maintenance.

The Barclays decision also raises questions about the viability of the price maintenance theory and the extent of its applicability. The Second Circuit’s previous encounters with the theory have included caveats as to its general applicability. In cases where plaintiffs can invoke the price maintenance theory, it will be more challenging under Barclays to rebut the presumption of reliance at the class certification stage because it obviates the need for plaintiffs to establish any front-end price impact. Where, as here, the back-end price impact was caused by mixed news, defendants face yet an additional obstacle.

Although the Second Circuit has made it more difficult for defendants to raise these types of issues at the class certification stage, its decision does not foreclose defendants from raising similar arguments—potentially based on the same expert evidence—at the merits stage. At that stage, unlike at class certification, plaintiffs will have the burden of proving materiality, loss causation, and damages.

The complete publication, including footnotes, is available here.

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