Finance & Economics of Xinjiang ›› 2024, Issue (5): 53-67.doi: 10.16716/j.cnki.65-1030/f.2024.05.009

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CPA Audit, Internal Control and Stock Price Informativeness

LIU Yifang, HUANG Zheng   

  1. Hunan University of Technology and Business, Changsha 410205, China
  • Received:2023-12-11 Online:2024-10-25 Published:2024-11-06
  • Contact: HUANG Zheng

Abstract:

Exploring the key factors that affect stock price information content from both internal and external governance mechanisms can help enhance the efficiency of stock market information. This paper examines the impact of audit quality and internal control quality on stock price information content through theoretical analysis and empirical testing. The study finds that both high-quality audit and internal control can significantly enhance stock price information content, and there is a significant substitution relationship between the two in enhancing stock price information content. The results remain unchanged after robustness tests using replacement of key variables, propensity score matching regression, Heckman two-stage model, and instrumental variable method. Based on this, enterprises should reasonably utilize internal and external supervision resources to continuously improve the efficiency of stock market information, and auditors should pay sufficient attention to the quality of internal control to reduce information asymmetry and maintain the order of capital markets.

Key words: CPA (Certified Public Accountant) audit, internal control, stock price informativeness, stock market information efficiency

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