List of Articles Stock price synchronicity

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  1 - The Relationship between Stock Price Synchronicity and Stock Crash Risk in Tehran Stock Exchange
  Mehdi Alinezhad Sarokolaei Reza Taheri Abed
  The managers tend to hoarding and accumulation of bad news for extended periods. The hoarding and accumulation of bad news for extended periods lead to stock price crashes when the accumulated hidden bad news crosses a tipping point, and thus comes out all at once. Theo More

  The managers tend to hoarding and accumulation of bad news for extended periods. The hoarding and accumulation of bad news for extended periods lead to stock price crashes when the accumulated hidden bad news crosses a tipping point, and thus comes out all at once. Theoretical literature shows that the main root of stock price synchronicity and stock crash risk is the lack of transparency of financial information. In this study, the relationship between stock price synchronicity and stock crash risk was investigated. Due to Limitations of the study, 63 listed firms of Tehran Stock Exchange, during the period 2009 to 2014 was studied. To do so, down-to-top volatility model was applied to measure stock crash risk and Also, For data review and test of the hypothesises from panel data was used. The results showed that between Stock price synchronicity and stock crash risk there was no a significant positive relationship Manuscript profile
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  2 - Stock Price Synchronicity and Herd Behavior of Decision on the Capital Market: Testing Moderating Role of Institutional Shareholders
  davod hemati Ali Esmayeelzadeh HAMIDREZA KORDLOUIE
  Behavioral functions in the field of financial market today is considered as one of the important bases in financial decision making and management. Knowing the criteria and processes influencing decision making can be useful to the dynamics and effectiveness of free fl More

  Behavioral functions in the field of financial market today is considered as one of the important bases in financial decision making and management. Knowing the criteria and processes influencing decision making can be useful to the dynamics and effectiveness of free flow of information to control risk and achieve greater returns. Investors are classified as one of the most important pillars of the capital market, ranging from perceptual decisions to emotional / collective and collective behaviors such as mass decision-making, which can upset capital market equilibrium according to market conditions and changes. The purpose of this research is Stock Price Synchronicity and Herd Behavior of Decision on the Capital Market: Testing Moderating Role of Institutional Shareholders. This study examined 102 stock exchange companies in the period 2014 to 2018. In this study, in order to measure and test the research hypotheses while using regression assumptions and testing hybrid models, multiple regression was used to test the research hypotheses. The results of testing the research hypotheses showed that stock price synchronicity has a negative and significant effect on the mass behaviors of shareholders and despite the institutional shareholders as a moderating variable, this effect is intensified in a negative direction. Manuscript profile
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  3 - The Study of the Relationship between Institutional Investors and Stock Price Synchronicity in Listed Companies in Tehran Stock Exchange
  Yahya Kamyabi Batool parhizgar
  Wide spread presence of institutional investors as a group of investors for corporate decisions and the behavior of stock prices through massive financial sources have important implications. This is a regulatory activity that investors do, emanate. Institutional invest More

  Wide spread presence of institutional investors as a group of investors for corporate decisions and the behavior of stock prices through massive financial sources have important implications. This is a regulatory activity that investors do, emanate. Institutional investors use their ability to monitor and manage corporate performance that is a function of their investment. The goal of this paper is examine the relationship between institutional investors and stock price synchronicity in listed companies in Tehran Stock Exchange. Also in this research institutional investors had classified into two groups, in terms of motivation and desire to control and monitor companies: stable (long-term) and transient (temporary). They examined the relationship of stock price synchronicity. Price synchronicity is degree of market and industry information that reflected in the stock price. And its evaluation scale is systematic risk divided by non systematic risk.To examine this, 50 companies listed on the Stock Exchange during the years 1386 to 1390 as sample were chosen. And to test the hypothesis is used from pooled data (panel data). The results showed a significant negative correlation between institutional investors and stock price synchronicity. Also the findings show a significant negative correlation between the stability of institutional investors and stock price synchronicity and there is significant positive relationship between transient institutional investors and stock price synchronicity. Manuscript profile
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  4 - The investigation of relationship between stock liquidity and Stock price synchronicity using the simultaneous equations system in the accepted companies in the Tehran Stock Exchange
  Ahmad Fallahzadeh Abarghooie Akram Taftiyan Forough Heyrani
  The stock market liquidity is very important due to its various roles and effects in the capital market and plays an important role in the stock market quality. On the other hand, the Stock price synchronicity reflects the amount of market information relative to specif More

  The stock market liquidity is very important due to its various roles and effects in the capital market and plays an important role in the stock market quality. On the other hand, the Stock price synchronicity reflects the amount of market information relative to specific information in the stock price of the companies. some studies have examined the effect of stock market liquidity on Stock price synchronicity and other studies that test the effect of the Stock price synchronicity on stock market liquidity. Therefore, the present study examines the relationship between stock market liquidity and Stock price synchronicity in listed companies in the Tehran Stock Exchange during the period from 2008 to 2015. In this study, 66 companies were selected as samples Using a systematic Omissive method and for the simulation of Stock price synchronicity, the model presented by Piotroski and Roulstone (2004) has been used. Then simultaneous equations system was estimated using a two-step regression method. The results of the estimation indicate the existence of a two-way relationship between the Trading volume, stock turnover, the stock market illiquidity ratio (Amihud), and the Amivest liquidity ratio as the criteria for assessing stock market liquidity and Stock price synchronicity in Tehran Stock Exchange.   Manuscript profile
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  5 - Investigating the Effect of Business Strategy and Stock Price Synchronicity on Stock Price Crash Risk
  Ghazal Hosseinzadeh Zorofchi Alireza Heidarzadeh Hanzaei Mohammad Hasani
  10.22034/amfa.2019.585637.1187
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  6 - The effect of auditor tenure on the relationship between institutional shareholders and stock price synchronicity
  Vahid Zabihollahnejad HamidReza GholamniaRoshan
  Priceconcurrency is a relative measure of company-specific information compared to market and industryinformation, which is reflected in stockprices, and due to its close connection with economic development and growth and capitalmarketstability.it is a relatively new f More

  Priceconcurrency is a relative measure of company-specific information compared to market and industryinformation, which is reflected in stockprices, and due to its close connection with economic development and growth and capitalmarketstability.it is a relatively new field in economicresearch.And financial isconsidered and taken into consideration.In this research, the effect of the tenureof the auditor on the relationship between institutionalshareholders and the simultaneityof stockprices has been investigated.The method of this research is descriptive ofcorrelationtype and practical in terms of purpose.The statisticalpopulation ofthis researchconsists of thenumber of companies admitted to the Tehran StockExchange, which were active inthe stockexchange between2015and2019.In order to determine the appropriate samplesize and homogenize the statisticalpopulation, the systematicelimination methodwas used, after applying the relevant criteria, 105companies in the Tehran Stock Exchange were selected as a statistical sample. All analysissteps have been done inEviews10and Stata14.5econometricsoftware with regression test.Thefindings from the first hypothesis of the research show that institutional shareholders do not have a significanteffect on the simultaneity of stockprices.The findings of the secondhypothesis of the researchshow that the tenure of the auditordoes not moderate therelationship betweeninstitutional shareholders and the simultaneity of stockprices.The resultsshow that the increase in the ownership percentageof institutional investorsincreases the institutionalcontrol bythis category of investors in the stockexchange, and the higherthe ownershippercentage of institutionalinvestors in a company, themore the possibility of interference andseizure of the flows.It limits thcash of thecompany forthe managers,which reducesthe specificrisk of the company by themanagers, and as a result, it leads tothe reduction of R2and finally leads to the reduction of the stockprice simultaneity. Manuscript profile
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  7 - A Model Explaining the Informational Efficiency of Stock Price Based on Various Stock Price Adjustment Speed Approaches
  Mohammad Naghizadeh Younes Badavar Nahandi Rasoul Baradaran Hassanzadeh Ali Asghar Mottaghi
  10.30495/faar.2024.1985726.3658
  Knowing the information efficiency in stock markets and the speed with which stock markets incorporate information flow into asset prices is very important for stakeholders. The present study tried identifying and explaining the factors affecting the information efficie More

  Knowing the information efficiency in stock markets and the speed with which stock markets incorporate information flow into asset prices is very important for stakeholders. The present study tried identifying and explaining the factors affecting the information efficiency of stock prices, investigating the efficiency of stock prices and providing an explanatory model for it in the Tehran Stock Exchange since 2011 to 2021. So, by investigating the literature reviews and analyzing experts’ perspectives, 65 variables were identified, and classified into 12 groups (economic variables, industry, quality of financial information, risk, market, corporate governance, regulatory, political, managerial, functional, financial limitation and company strategies). To measure the information efficiency of the stock price, the speed of the stock price adjustment in reaching the intrinsic value, the reaction to the general market information and the specific company information have been used. To identify the influential variables and provide a model explaining the efficiency of stock price information, the path analysis method was used in M_PLUS software. The models based on the stock price adjustment speed approach in reaching the intrinsic value had the explanatory power of 64 and 52 percent. The model based on the adjustment speed approach in response to general market information and the model based on the adjustment speed approach to company-specific information have an explanatory power of 74 and 64 percent. The current research, is considered an important step to help improve the level of efficiency of the country's stock market. Manuscript profile
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  8 - Decision Usefulness evaluation of risk factor disclouser
  Akbar Khayampour Sina Kheradyar Farzin Rezaei Mohammadreza Vatanparast
  The disclosure of risk elements contained effective messages in assessing the impact of future events in the company. Therefore, the conscious judgment of consumers is the usefulness of providing supplementary information from the risk elements of categorized factors on More

  The disclosure of risk elements contained effective messages in assessing the impact of future events in the company. Therefore, the conscious judgment of consumers is the usefulness of providing supplementary information from the risk elements of categorized factors on the different functions of firms and improving the quality of accounting information . thus , the purpose of this study is to evaluate the usefulness in decision makers with disclosure of risk elements and economic consequences of companies performance . for this purpose , the research with 87 sample companies and in the 7 - year period of 1396 - 1390 in the descriptive - correlation method showed that the disclosure of data elements of firm - level risk elements contained useful information in predicting the risk of fall of stock market prices but no significant relationship was found at the industry level . The disclosure of risk elements at the firm level of the industry contains useful information in predicting the synchronization behavior of firms ' stock market prices. The greater the disclosure of the risk elements has greater advantage, making a greater impact on the prediction and explanatory power of stock price and stock price appreciation. Manuscript profile