This theoretical article introduces the construct of CEO celebrity in order to explain how the tendency of journalists to attribute a firm’s actions and outcomes to the volition of its CEO affects such firm. In the model developed here, journalists celebrate a CEO whose firm takes strategic actions that are distinctive and consistent by attributing such actions and performance to the firm’s CEO. In so doing, journalists over-attribute a firm’s actions and outcomes to the disposition of its CEO rather than to broader situational factors. A CEO who internalizes such celebrity will also tend to believe this over-attribution and become overconfident about the efficacy of her past actions and future abilities. Hubris arises when CEO overconfiden...