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Cournot Competition, Informational Feedback, and Real Efficiency

Author

Listed:
  • Lin William Cong
  • Xiaohong Huang
  • Siguang Li
  • Jian Ni

Abstract

We revisit the relationship between firm competition and real efficiency in a novel setting with informational feedback from financial markets. Although intensified competition can decrease market concentration in production, it reduces the value of proprietary information (e.g., market prospects) for speculators and discourages information production and price discovery in financial markets. Therefore, competition generates non-monotonic welfare effects through two competing channels: market concentration and information production. When information reflected in stock prices is sufficiently valuable for production decisions, competition can harm both consumer welfare and real efficiency. Our results are robust under cross-asset trading and learning and highlight the importance of considering the interaction between product market and financial market in antitrust policy, e.g., concerning the regulation of horizontal mergers.

Suggested Citation

  • Lin William Cong & Xiaohong Huang & Siguang Li & Jian Ni, 2024. "Cournot Competition, Informational Feedback, and Real Efficiency," NBER Working Papers 32944, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:32944
    Note: AP CF IO
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    More about this item

    JEL classification:

    • D61 - Microeconomics - - Welfare Economics - - - Allocative Efficiency; Cost-Benefit Analysis
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance
    • G40 - Financial Economics - - Behavioral Finance - - - General

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