We develop a model that shows that an overconfident manager, who sometimes makes value‐destroying investments, has a higher likelihood than a rational manager of being deliberately promoted to CEO under value‐maximizing corporate governance. Moreover, a risk‐averse CEO's overconfidence enhances firm value up to a point, but the effect is nonmonotonic and differs from that of lower risk aversion. Overconfident CEOs also underinvest in information production. The board fires both excessively diffident and excessively overconfident CEOs. Finally, Sarbanes‐Oxley is predicted to improve the precision of information provided to investors, but to reduce project investment.

We focus on public‐market investor participation to analyze the firm's decision to stay public or go private. The liquidity of public ownership is both a blessing and a curse: It lowers the cost of capital, but also introduces volatility in a firm's shareholder base, exposing management to uncertainty regarding shareholder intervention in management decisions, thereby affecting the manager's perceived decision‐making autonomy and curtailing managerial inputs. We extract predictions about how investor participation affects stock price level and volatility and the public firm's incentives to go private, providing a link between investor participation and firm participation in public markets.