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Stock Prices Crash RiskThe of risk the stock price crash, which indicates the possibility of a sharp and sudden drop in price, is affected by the risk of financial distress, and agency costs intensify this relationship. Empirical investigation of this issue is the aim of the present studyTo achieve the goal of the research, the data of 211 corporations active in the Tehran Stock Exchange were selected during a 10-year period from 2012 to 2021, and multivariate linear regression method and mixed data model were used to test the hypothesis. The findings showed that the risk of financial distress (criterion based on market information) does not increase the risk of stock prices crash. .Also the existence of agency costs does not intensify the relationship between the risk of financial distress and risk of stock prices crash. In addition to this test and additional analyzes showed that the risk of financial distress (criterion based on Altman's accounting information) increases the risk of stock prices crash (criterion of negative skewness of stock returns). Investigating the effect of agency costs on the relationship between the risk of financial distress and risk of stock prices crash and measuring the risk of crash with the two criteria of negative skewness of stock returns and downward volatility, the risk of financial distress with the two criteria of Merton and Altman, as well as adjusting the agency costs of each company. With industry average, research innovation is considered

The purpose of this study is to examine the impact of the audit committee on the stock prices crash risk by Looking at the ethical voluntary disclosure. To assess the impact of the quality of the audit committee on the ethical voluntary disclosure, the proposed variable variables related to the issue and to examine the stock prices crash risk, were used from four factors of negative skewness of stock returns, maximum sigma, fluctuations to the bottom and the fall of stock prices. This is an applied research and uses post-event approach. The studied period is 2013-2017 and the sample is a sample of 76 companies. The least squares regression method was used to test the hypotheses. The findings of this study showed that, after eliminating the effect of control variables, the variables affecting the quality of the audit committee in ethical voluntary of ethics have a significant effect on the stock prices crash risk. [ABSTRACT FROM AUTHOR]