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Single-Firm Event Studies, Securities Fraud, And Financial Crisis: Problems Of Inference, Andrew Baker

Andrew Baker

Lawsuits brought pursuant to section 10(b) of the Securities and Exchange Actdepend on the reliability of a statistical tool called an event study to adjudicate issues ofreliance, materiality, loss causation, and damages. Although judicial acceptance of theevent study technique is pervasive, there has been little empirical analysis of the ability ofevent studies to produce reliable results when applied to a single company’s security.
Using data from the recent financial crisis, this Note demonstrates that the standardmodelevent study used in most court proceedings can lead to biased inferences sanctionedthrough the Daubert standard of admissibility for expert testimony. In particular, in thepresence …