أثر المراجعة المشتركة على ترشيد قرارات المستثمرين والقيمة السوقية للشركة: دليل تطبيقي من الشركات المقيدة بالبورصة المصرية The Impact of Joint Audit on Rationalizing Investors’ Decisions and The Firm’s Market Value: An applied guide From Companies Listed on the Egyptian Stock Exchange

Abstract: Study Objective: The main objective of the study is to measure the impact of the joint audit on the rationalization of investors' decisions and the market value of the company by applying to companies listed on the Egyptian stock Exchange during the period from 2018 to 2023. Design and Methodology: The study relied on appropriate statistical models for analyzing Panel Data using the statistical program Stata/IC 15, which combines Cross-sectional Data and Time Series Data approaches, for a sample of (73) non-financial companies registered on the Egyptian Stock Exchange during the period from (2018 to 2023), to build an empirical model for testing the study hypotheses that reflect the impact of joint audit on rationalizing investors' decisions and the market value of the firm. Findings and recommendations: The results of this study indicate that joint audit has a positive and Significant impact on rationalizing investors' decisions and the company's market value. Based on this, the study recommends that the relevant authorities and regulators of the auditing profession in Egypt should adopt a standard for joint audit and impose severe penalties in case of any agreement between the two audit firms participating in the joint audit process in a way that makes it a fictitious process and turns it into an individual audit. Originality and Value: The current study is considered one of the important studies in the Arab environment in general, as it contributes to the accounting literature by attempting to reduce the controversy regarding the relationship between joint audit and investors' decisions and company's market value. This study is considered one of the rare studies that directly addressed the impact of joint audit on investors' decisions and firm’s market value in the Egyptian business environment, as an example of emerging economies. Keywords: Joint audit, investors' decisions, Firm's market value.