TY - JOUR AB - Purpose The purpose of this paper is to investigate the association between CEO narcissism and corporate risk taking.Design/methodology/approach The authors provide a novel and unobtrusive measure of CEO narcissism based on LinkedIn profiling. The authors investigate the relationship between CEO narcissism and corporate risk taking (stock return volatility) for a sample of 475 US manufacturing firms in the period 2010-2014.Findings The authors find an inverse U-shape relationship between CEO narcissism and stock return volatility. The inverse U-shape relationship (the “humpback”) is caused by the paradoxical nature of the narcissistic personality in which the self-esteem is high but at the same time fragile with a combination of self-admiration and a constant need of having this positive self-view confirmed. The results are robust to alternative specifications of CEO narcissism and corporate risk taking. The results are economically meaningful. Thus, a moderate degree of CEO narcissism – as compared to a very low or a very high level of CEO narcissism – is associated with an increase in corporate risk taking of approximately 12 percent.Originality/value Previous literature provides multiple analyses on the association between managerial overconfidence and corporate decisions. As opposed to overconfidence, narcissism is a personality trait having both cognitive and behavioral dimensions. This paper provides a novel contribution to the growing literature on the association between managerial biases/traits and corporate decision-making. VL - 10 IS - 3 SN - 1940-5979 DO - 10.1108/RBF-07-2017-0070 UR - https://doi.org/10.1108/RBF-07-2017-0070 AU - Aabo Tom AU - Eriksen Nicklas Bang PY - 2018 Y1 - 2018/01/01 TI - Corporate risk and the humpback of CEO narcissism T2 - Review of Behavioral Finance PB - Emerald Publishing Limited SP - 252 EP - 273 Y2 - 2024/04/24 ER -