This study investigates the endogenous relationship between abnormal insider trading and accrual abuse, and explores whether corporate governance affects this relationship. Our results suggest that insiders take advantage of private information on abnormal accruals to time their trading and...

This article analyzes the manifold situations in which the efficient-market hypothesis (EMH) has influenced—or has failed to influence—federal securities regulation and state corporate law, and the prospective roles for the EMH in these contexts. In federal securities regulation, the EMH has...

We survey the textual sentiment literature, comparing and contrasting the various information sources, content analysis methods, and empirical models that have been used to date. We summarize the important and influential findings about how textual sentiment impacts on individual, firm-level and...

We analyze a sample of 330 firms making unaudited disclosures required by Section 302 and 383 firms making audited disclosures required by Section 404 of the Sarbanes-Oxley Act. We find that Section 302 disclosures are associated with negative announcement abnormal returns of -1.8 percent, and...

Do financial derivatives enhance or impede innovation? We aim to answer this question by examining the relationship between equity options markets and standard measures of firm innovation. Our baseline results show that firms with more options trading activity generate more patents and patent...

We survey the textual sentiment literature, comparing and contrasting the various information sources, content analysis methods, and empirical models that have been used to date. We summarize the important and influential findings about how textual sentiment impacts on individual, firm-level and...

This study investigates the market response to the requirement that the principal executive and financial officer of an SEC registrant each state under oath that the firm's annual and quarterly financial reports are materially accurate and complete pursuant to the Securities Exchange Act of...

This paper studies the relationship between companies' choice of capital structure and their stock market returns from a corporate governance perspective. A portfolio buying low-levered, zero payout stocks and selling high-levered, zero payout stocks earned abnormal returns of 8.5% per year from...