Say it Again Sam: The Idiosyncratic Information Content of Corporate Conference Calls

Abstract

This paper examines the idiosyncratic information-content of corporate conference calls. It studies the determinants, and the consequences, of idiosyncratic information production. To facilitate this study, I develop a novel measure of information-content which analyzes every (idiosyncratic) word choice made by management during both sessions of the call. In a sample of S&P 1500 firms from 2001 to 2012, this new measure of information-content explains cumulative abnormal returns. It shows how CEOs produce (suppress) information during the conference call. It shows how analyst participation in the call improves information production. It shows that a differential value is placed on information conditioned on the market segment of the firm. I contrast the effectiveness of this new measure to that of the conventional methodologies of tone and word-counting. I provide evidence that this new information-content measure is better suited to conference calls than are the other two.