Policy uncertainty and peer effects: Evidence from corporate investment in China

Hyun Joong Im, Jia Liu, Young Joon Park

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


This study investigates whether economic policy uncertainty (EPU) magnifies peer effects in corporate investment in China and the economic mechanisms through which EPU may act upon this property. We examine this relationship by analysing a large sample of publicly listed companies in China for the period of 2009–2019, adopting the peer-firm-average idiosyncratic stock return to capture exogenous variations in peer firms’ investment activities. We demonstrate that peer effects are stronger when EPU is increasing in intensity. We also find that high EPU magnifies peer effects by decreasing the accuracy of firms’ signals regarding their investment opportunities, asymmetrically impacting their capacity to acquire information and exacerbating managers’ career concerns. We further show that increased EPU magnifies peer effects only for underinvesting firms, causing underinvestment to persist and retarding recovery from an economic downturn. Our investigation provides original evidence of how EPU influences corporate investment decisions through peer effects, contributing to the continuing debate on the role of EPU and corporate investment efficiency by establishing that the adoption of consistent and transparent economic policies optimize returns on a company's investments, especially during an economic downturn.

Original languageEnglish
Article number101834
JournalInternational Review of Financial Analysis
StatePublished - Oct 2021


  • Corporate investment policy
  • Economic policy uncertainty
  • Information cascade
  • Peer effects
  • Underinvestment


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