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State Securities Enforcement, Andrew K. Jennings
State Securities Enforcement, Andrew K. Jennings
Faculty Articles
Each year, state securities regulators bring over twice the enforcement actions brought by the Securities and Exchange Commission, yet their work is largely missing from the literature. This Article provides an institutional account of state securities enforcement and identifies two key advantages—detection granularity and institutional decentralization—that states enjoy over their federal counterparts in policing localized frauds involving individual, often small-dollar, victims. Although states share enforcement jurisdiction with the SEC and DOJ, their enforcement activity reflects their institutional advantages and constraints and thus largely does not overlap with that of federal authorities. Instead, states serve as the nation’s residual securities enforcers, …
Power And Statistical Significance In Securities Fraud Litigation, Jill E. Fisch, Jonah B. Gelbach
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 …