Securities Law Commons^™

Power And Statistical Significance In Securities Fraud Litigation, Jill E. Fisch, Jonah B. Gelbach

All Faculty Scholarship

Event studies, a half-century-old approach to measuring the effect of events on stock prices, are now ubiquitous in securities fraud litigation. In determining whether the event study demonstrates a price effect, expert witnesses typically base their conclusion on whether the results are statistically significant at the 95% confidence level, a threshold that is drawn from the academic literature. As a positive matter, this represents a disconnect with legal standards of proof. As a normative matter, it may reduce enforcement of fraud claims because litigation event studies typically involve quite low statistical power even for large-scale frauds.

This paper, written for …

Whitman And The Fiduciary Relationship Conundrum, Lisa Fairfax

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While the law on insider trading has been convoluted and, in Judge Jed S. Rakoff’s words, “topsy turvy,” the law on insider trading is supposedly clear on at least one point: insider trading liability is premised upon a fiduciary relationship. Thus, all three seminal U.S. Supreme Court cases articulating the necessary elements for demonstrating any form of insider trading liability under § 10(b) and Rule 10b-5 of the Securities Exchange Act of 1934 made crystal clear that a fiduciary relationship represented the lynchpin for such liability.

Alas, insider trading law is not clear about the source from which the fiduciary …

Class Actions, Statutes Of Limitations And Repose, And Federal Common Law, Stephen B. Burbank, Tobias Barrington Wolff

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After more than three decades during which it gave the issue scant attention, the Supreme Court has again made the American Pipe doctrine an active part of its docket. American Pipe addresses the tolling of statutes of limitations in federal class action litigation. When plaintiffs file a putative class action in federal court and class certification is denied, absent members of the putative class may wish to pursue their claims in some kind of further proceeding. If the statute of limitations would otherwise have expired while the class certification issue was being resolved, these claimants may need the benefit of …

Constructive Ambiguity And Judicial Development Of Insider Trading, Jill E. Fisch

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The Texas Gulf Sulphur decision began what has become a fifty-year project of developing U.S. insider trading regulation through judicial lawmaking. During the course of that project, the courts developed a complex, fraud-based approach to determining the scope of liability. The approach has led, in many cases, to doctrinal uncertainty, a result that is reflected in the recent decisions in Newman, Salman, and Martoma.

n the face of this uncertainty, many commentators have called for a legislative solution. This article argues, however, that the true challenge of insider trading regulation is a lack of consensus about the …

The Logic And Limits Of Event Studies In Securities Fraud Litigation, Jill E. Fisch, Jonah B. Gelbach, Jonathan Klick

All Faculty Scholarship

Event studies have become increasingly important in securities fraud litigation after the Supreme Court’s decision in Halliburton II. Litigants have used event study methodology, which empirically analyzes the relationship between the disclosure of corporate information and the issuer’s stock price, to provide evidence in the evaluation of key elements of federal securities fraud, including materiality, reliance, causation, and damages. As the use of event studies grows and they increasingly serve a gatekeeping function in determining whether litigation will proceed beyond a preliminary stage, it will be critical for courts to use them correctly.

This Article explores an array of …

American Pipe Tolling, Statutes Of Repose, And Protective Filings: An Empirical Study, David Freeman Engstrom, Jonah B. Gelbach

All Faculty Scholarship

This paper offers a conceptual and empirical analysis of a key issue that overhangs CalPERS v. ANZ Securities, soon to be decided by the Supreme Court. In particular, the paper offers an empirical estimate of the plausible quantity of wasteful protective filings that putative class members might make if the Court were to hold that American Pipe tolling does not apply to statutes of repose in the federal securities laws.

Federal Securities Fraud Litigation As A Lawmaking Partnership, Jill E. Fisch

All Faculty Scholarship

In its most recent Halliburton II decision, the Supreme Court rejected an effort to overrule its prior decision in Basic Inc. v. Levinson. The Court reasoned that adherence to Basic was warranted by principles of stare decisis that operate with “special force” in the context of statutory interpretation. This Article offers an alternative justification for adhering to Basic—the collaboration between the Court and Congress that has led to the development of the private class action for federal securities fraud. The Article characterizes this collaboration as a lawmaking partnership and argues that such a partnership offers distinctive lawmaking advantages. …

How To Prevent Hard Cases From Making Bad Law: Bear Stearns, Delaware And The Strategic Use Of Comity, Marcel Kahan, Edward B. Rock

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The Bear Stearns/JP Morgan Chase merger placed Delaware between a rock and a hard place. On the one hand, the deal’s unprecedented deal protection measures – especially the 39.5% share exchange agreement – were probably invalid under current Delaware doctrine because they rendered the Bear Stearns shareholders’ approval rights entirely illusory. On the other hand, if a Delaware court were to enjoin a deal pushed by the Federal Reserve and the Treasury and arguably necessary to prevent a collapse of the international financial system, it would invite just the sort of federal intervention that would undermine Delaware’s role as the …

Who Writes The Rules For Hostile Takeovers, And Why? The Peculiar Divergence Of Us And Uk Takeover Regulation, John Armour, David A. Skeel Jr.

All Faculty Scholarship

No abstract provided.

The Scope Of Private Securities Litigation: In Search Of Liability Standards For Secondary Defendants, Jill E. Fisch

All Faculty Scholarship

Recent federal court decisions have struggled to apply the Supreme Court's decision in Central Bank v. First Interstate to determine when outside professionals should be held liable as primary violators under section IO(b) of the Securities Exchange Act. In keeping with the Court's current interpretive methodology, Central Bank and its progeny employ a textualist approach. In this Article, Professor Fisch argues that literal textualism is an inappropriate approach for interpreting the federal securities laws generally and misguided in light of legislative developments post-dating the Central Bank decision. Instead, Professor Fisch advocates an approach that weighs Congress 's recent endorsement of …

Judge Friendly's Contributions To Securities Law And Criminal Procedure: "Moderation Is All", Frank Goodman

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No abstract provided.