Explaining the mediating role of the factors affecting the delay in the auditor's report on the relationship between income-cost matching and additional stock price fluctuations

Accounting information is provided to users in the form of financial reports. Independent auditors provide the basis and necessary conditions for the quality of accounting information and financial reporting on time. Therefore, the delay in providing audit reports can affect the company's performance and even the company's stock price. In this research, the theory related to the matching principle in relation to stock price fluctuations was investigated. The main approach of the mentioned theory is that weak matching acts as a disturbance in the economic relationship between income and cost, and as a result, it increases the volatility in stock prices. The results of this research showed a strong compatibility with the existing theory. This research aims to explain the mediating role of the factors affecting the delay in the auditor's report on the relationship between income-cost matching and additional stock price fluctuations using the combined DEMATEL and ANP methods in the period from 1393 to 1399 in 150 companies admitted to the stock exchange. Bahadar Tehran has been done. In order to identify and rank the factors affecting the delay of the auditor's report, the Delphi-fuzzy method was used, and to determine the intensity of etherability and effectiveness, and finally, the fuzzy Dimetal method and the ANP network analysis method were used. The results of the research showed that the delay in the auditor's report plays a mediating role in the relationship between compliance with the principle of compliance and additional fluctuations in price.