Law Commons^™

Demystifying Causation In Fraud-On-The-Market Actions, Merritt B. Fox

Faculty Scholarship

An issuer makes a positive, material misstatement in violation of Rule 10b-5. What must an investor who purchases the issuer's shares on the open market show to establish causation in a "fraud-on-the-market" action for damages? After years of confusion in the lower courts, the Supreme Court recently granted certiorari on the question in the case of Broudo v. Dura Pharmaceuticals.

This Article argues that the confusion in the lower courts has arisen because they have analyzed the issue in terms of the twin concepts of "transaction causation" and "loss causation." They initially developed this bifurcated framework as a way …