We find that powerful chief executive officers (CEOs) are associated with higher crash risk. The positive association between CEO power and crash risk holds when controlling for earnings management, tax avoidance, chief executive officer's option incentives, and CEO overconfidence. Firms with powerful CEOs have higher probability of financial restatements, lower proportion of negative to positive earnings guidance, and lower ratio of negative to positive words in their financial statements. The association between powerful CEOs and higher crash risk is mostly evident among firms with higher sensitivity of CEO wealth to stock prices and when CEOs have lower general skills. External monitoring mechanisms weaken but do not eliminate the association between powerful founder CEOs and higher crash risk.

We exploit the staggered initiation of merger and acquisition (M&A) laws across countries as a plausibly exogenous shock to the threat of takeover to examine whether the market for corporate control has a real effect on firm-level stock price crash risk. Using a difference-in-differences regression on a large sample of firms from 32 countries, we find that stock price crash risk significantly decreases following the passage of M&A laws. This effect is stronger for firms domiciled in countries with poorer investor protection and information environments and for firms with weaker firm-level governance. Further, financial reporting opacity and overinvestment significantly decrease in the post-M&A law periods. Our study suggests that an active takeover market has a disciplining effect on managerial bad news hoarding and leads to lower future crash risk.