Stock Market Tournaments

Working Paper: CEPR ID: DP9000

Authors: Emre Ozdenoren; Kathy Yuan

Abstract: We propose a new theory of suboptimal risk-taking based on contractual externalities. We examine an industry with a continuum of firms. Each firm's manager exerts costly hidden effort The productivity of e ffort is subject to systematic shocks. Firms' stock prices reflect their performance relative to the industry average. In this setting, stock-based incentives cause complementarities in managerial effort choices. Externalities arise because shareholders do not internalize the impact of their incentive provision on the average effort. During booms, they over-incentivise managers, triggering a rat-race in effort exertion, resulting in excessive risk relative to the second-best. The opposite occurs during busts.

Keywords: contractual externalities; excessive risk-taking; insufficient risk-taking; stock-based incentives

JEL Codes: D86; G01; G30


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
high average productivity (O49)increased stock-based incentives (M52)
increased stock-based incentives (M52)excessive risk-taking (G41)
low average productivity (O49)decreased stock-based incentives (M52)
decreased stock-based incentives (M52)insufficient risk-taking (D81)

Back to index