We examine whether and how product market competition affects insider trading profitability. We empirically show that the insiders of firms in highly competitive industries make higher abnormal profits. Our identification strategy includes both a quasi-natural experiment setting and an instrumental variable approach to address endogeneity concerns. We also run an extensive array of robustness checks and find that our baseline results remain substantially unchanged. Our cross-sectional analyses show that insider trading profitability is more pronounced for firms with: a higher level of trade secrecy, a higher level of R&D, a lower level of management voluntary disclosures, less readable 10-K reports and highly tone-ambiguous financial disclosures. We also find that our results are robust to the inclusion of corporate governance mechanisms. Overall, this study is consistent with the theoretical predictions that support the information asymmetry and proprietary cost channels of competition and that increases in competition lead insiders to undertake more rent-seeking activity.

We examine the effect of mandatory financial disclosures, specifically SFAS 131, on corporate restructuring activities by using difference-in-differences (DiD) and regression discontinuity design (RDD) settings. After the adoption of SFAS 131, firms are less likely to engage in acquisitions than are the control firms. Furthermore, conditional on firms' engagement in acquisition activities, acquirers are less likely to complete their initiated acquisition deals, especially for those value-destroying deals. After the implementation of SFAS 131, we find that the equity market reacts positively to large and diversifying deals that are subject to mandatory segment disclosures. Overall, our results suggest that the segment disclosure standard helped prevent managers from undertaking new, value-destroying M&As post-SFAS 131. Finally, these SFAS 131–induced corporate restructuring activities are shown to help reduce the risk of a stock price crash.