Learning About CEO Ability and Stock Return Volatility

TitleLearning About CEO Ability and Stock Return Volatility
Publication TypeJournal Article
Year of Publication2015
AuthorsPan Y, Wang TYue, Weisbach MS
JournalReview of Financial Studies
Date PublishedJun
ISBN Number0893-9454
Accession NumberWOS:000358384800003

Consistent with predictions from a stylized Bayesian learning model stock return volatility declines with CEO tenure in a convex manner, even for CEOs whose appointments occur for exogenous reasons. The decline is faster when there is higher uncertainty about the CEO's ability when there is more transparency about the firm's prospects, and when CEO ability is more important in value creation. We quantify the importance of uncertainty about CEO ability relative to the firm's fundamental cash flow uncertainty in contributing to stock return volatility, highlighting the importance of management in creating value.