Search results

1 – 10 of 864
Article
Publication date: 27 November 2019

Hossein Sayyadi Tooranloo, Pedram Azizi and Ali Sayyahpoor

Changes in economic markets have made it necessary to understand the psychology of individual investors. Conducting effective studies on the decision of investors to buy…

Abstract

Purpose

Changes in economic markets have made it necessary to understand the psychology of individual investors. Conducting effective studies on the decision of investors to buy stock in the stock market can be useful. Therefore, it is necessary to identify and prioritize the factors affecting the decision-making of investors to purchase shares of the stock exchange. The purpose of this study was to analyze causal relationships and to weight effective factors on individual investment to purchase shares of Tehran Stock Exchange.

Design/methodology/approach

The present study is applied research in the term of its purposes and a descriptive-survey one in the term of data gathering methods. The data required in this study was collected through library and field studies. The study population included 35 investment experts. In present study, multi-criteria decision-making techniques in type-2 fuzzy environments have been used to analyze the causal relationships and weighing the factors affecting individual investment in purchasing stock in the stock market.

Findings

In the study, 4 indicators and 20 sub-indicators influencing individual investors’ decision to purchase shares of Tehran Stock Exchange were selected based on the literature review in the field of investment in the stock exchange, as well as interviews with experts. Analyzing the opinions of experts showed that they have much paid attention to financial index compare to the economic, political and psychological indicators of the market in determining the priority of indicators. In analyzing sub-indicators, it was identified that Iranian investors pay special attention to economic and political developments, political news and international economic developments.

Research limitations/implications

The present study has been carried out in Iran, and therefore, is geographically limited to Iran. In thematic terms, it is limited to effective factors of individual investments in Tehran Stock Exchange. The statistical population of present study was limited to investing experts in Tehran Stock Exchange. The difference in financial, economic, social and political conditions of individuals was another limitation of present study. The main consequences of research were the explanation of causes of investors’ higher attention to financial factors than economic, political and mental factors of market in buying stocks.

Originality/value

Given the uncertainty in the market status, using multi-criteria decision-making techniques in financial analysis can help decision-makers to make better decisions. In addition, it would be possible to take into account many variables that do not have a mathematical aspect but are important in decision-making and lead to increased decision-making satisfaction. The research initially analyzed causal relationships of determinants of individual investment on stock exchange for buying stocks through a type-2 fuzzy approach.

Details

International Journal of Ethics and Systems, vol. 36 no. 1
Type: Research Article
ISSN: 2514-9369

Keywords

Article
Publication date: 8 May 2017

Mahdi Salehi, Mostafa Karimzadeh and Navid Paydarmanesh

US sanctions have been a major feature of US Iran policy since Iran’s 1979 Islamic revolution, but the imposition of UN and worldwide bilateral sanctions on Iran that…

Abstract

Purpose

US sanctions have been a major feature of US Iran policy since Iran’s 1979 Islamic revolution, but the imposition of UN and worldwide bilateral sanctions on Iran that began in 2006 and increased dramatically as of 2010 is recent by comparison. The objectives of US sanctions have evolved over time. Broad international sanctions imposed on Iran harmed Iran’s economy and contributed to Iran’s acceptance of agreements that exchange constraints on its nuclear program for sanctions relief. The subject of this study is important because both Iran and the international communities are demanding for information about the effect of sanctions on Iran. In an international and regional perspective, it seems that sanctions have a negative impact on economic, social and even political status of Iran. Therefore, this paper aims to examine the impact of Iran Central Bank sanction on Tehran Stock Exchange as on December 31, 2011.

Design/methodology/approach

Variables of model are consisted by exchange rate, oil prices and Tehran Stock Exchange Price Index (TEPIX) from October 2, 2011 to March 29, 2012, which is offered daily. To analyze the model, the authors used Johansen–Juselius and Autoregressive Distributed Lag (ARDL) methods.

Findings

The results indicate that there is a long-run equilibrium relationship between selected variables as oil prices, and exchange rates have a positive effect on the TEPIX. In other words, the results of the econometric estimation show the positive effect of the Iran Central Bank sanction on the TEPIX. Thus, because of economic sanctions imposed by the Western countries, Tehran Stock Exchange has been growing.

Originality/value

No empirical research exists that examines the impact of sanctions on stock price in developing countries. This study fills this gap by examining the links between sanctions and stock price in Iran.

Details

International Journal of Law and Management, vol. 59 no. 3
Type: Research Article
ISSN: 1754-243X

Keywords

Article
Publication date: 25 February 2014

Noraddin Mousazadeh Abbassi, Mohammad Ali Aghaei and Mahdi Moradzadeh Fard

The aim of this research is to predict the total stock market index of the Tehran Stock Exchange, using the compound method of fuzzy genetics and neural network, in order…

769

Abstract

Purpose

The aim of this research is to predict the total stock market index of the Tehran Stock Exchange, using the compound method of fuzzy genetics and neural network, in order for the active participants of the finance market as well as macro decision makers to be able to predict the market trend.

Design/methodology/approach

First, the prediction was done by neural network, then the output weight of optimum neural network was taken as standard to repeat this prediction using the genetic algorithm, and then the extracted pattern from the neural network was stated through discernible rules using fuzzy theory.

Findings

The main attention of this paper is investors and traders to achieve a method for predicting the stock market. Concerning the results of previous research, which confirms the relative superiority of non-linear models in price index prediction, an appropriate model has been offered in this research by compounding the non-linear method such as fuzzy genetics and neural network. The results indicate superiority of the designed system in predicting price index of the Tehran Stock Exchange.

Originality/value

This paper states its originality and value by compounding the non-linear method issues pattern to predict stock market, to encourage further investigation by academics and practitioners in the field.

Details

International Journal of Quality & Reliability Management, vol. 31 no. 3
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 14 May 2018

Ali Karimi and Masoud Barati

This paper aims to evaluate the financial performance of companies listed on Tehran Stock Exchange by using negative data envelopment analysis (DEA) approach.

4139

Abstract

Purpose

This paper aims to evaluate the financial performance of companies listed on Tehran Stock Exchange by using negative data envelopment analysis (DEA) approach.

Design/methodology/approach

First, the financial metrics for performance evaluation were extracted and then filtered based on the experts’ opinions. Upon choosing the appropriate financial measures, the financial information of 72 companies selected from four automotive, pharmaceutical, petrochemical and cement industries were collected, and the criteria values were also measured. The financial performance of selected companies was assessed using negative data bounded adjusted measure in the DEA, and efficient and inefficient companies were identified. Finally, the efficient companies were ranked using Andersen and Petersen model.

Findings

The required analysis was conducted, and the financial performance of selected companies listed on Tehran Stock Exchange was evaluated. There were 58 efficient companies with a performance value of 1; 14 companies became inefficient because the efficiency size was less than 1; therefore, reference units were also introduced to the managers for efficiency of inefficient companies.

Originality/value

The aim of this study was to identify the required financial criteria and to determine an appropriate model for performance evaluation based on negative DEA. The findings can help shareholders to identify efficient companies and make the optimal portfolio accordingly; the managers of inefficient companies can also take the proper reforming actions to improve efficiency.

Details

International Journal of Law and Management, vol. 60 no. 3
Type: Research Article
ISSN: 1754-243X

Keywords

Article
Publication date: 30 April 2020

Shayan Farhangdoust, Mahdi Salehi and Homa Molavi

The purpose of the present paper is to examine the trade-off relationship between managerial ownership and corporate debts and whether this relationship is moderated by…

Abstract

Purpose

The purpose of the present paper is to examine the trade-off relationship between managerial ownership and corporate debts and whether this relationship is moderated by ownership structure and corporate tax rates, particularly in a transition and emerging market whose unique institutional characteristics considerably differ from those prevailing both in the West and East markets.

Design/methodology/approach

This research is semi-empirical in terms of method and practical in terms of purpose. The authors test their hypotheses by using simultaneous equations system methodology with two- and three-stages least squares regression (2SLS and 3SLS) and panel data technics on a sample of 952 listed companies on the Tehran Stock Exchange during 2011-2018.

Findings

The findings indicate that, contrary to the current line of research, there is no trade-off relationship between managerial ownership and debt concerning the reduction of agency costs. Likewise, the study finds no convincing evidence that either the controlling shareholder or the corporate tax rate could influence or moderate this interrelationship. The conjecture lies in the fact that the fundamental environmental variations between the Tehran Stock Exchange and the institutional assumptions underpinning the Western models have led to the formation of such unexpected results.

Research limitations/implications

The implications drawn from this study are constrained by two primary limitations. First, the present study is conducted in an Iranian setting; therefore, the data used for the study only contain companies listed on the Tehran Stock Exchange. The utilization of listed companies on the Tehran Stock Exchange is likely to affect the generalizability of the study in an international context. Second, in this study, we were unable to extend the sample time period because of some major deficiencies in the Tehran Stock Exchange library and its supplementary software. The usage of an extended time period could have provided more generalizable results. However, extended time period, per se, may impair the validity of the results as well.

Originality/value

Because the fundamental institutional assumptions underpinning the Western and even East Asia capital structure models are not valid in the institutional environment of Iran, the findings of this study could provide substantial implications for the understanding of agency costs and capital structure literature. These significant institutional and ownership differences are the factors affecting firms’ leverage and capital choice decisions. Indeed, this study has laid some groundwork upon which a more detailed evaluation of the Iranian firms’ capital structure could be based. In addition, the examination of such relations may provide the ground for sound decision-making by various interested users of financial and accounting information.

Article
Publication date: 19 November 2018

Mahdi Salehi, Nasrin Ziba and Ali Daemi Gah

The purpose of this paper is to investigate the relationship between financial reporting and cost stickiness in companies listed on the Tehran Stock Exchange.

Abstract

Purpose

The purpose of this paper is to investigate the relationship between financial reporting and cost stickiness in companies listed on the Tehran Stock Exchange.

Design/methodology/approach

Data of all Iranian manufacturing listed companies gathered for testing hypotheses during 2010–2016 and R statistical software are employed in order to analyzing data.

Findings

The results of this study indicate that there is a significant relationship between administrative, sale, material, labor and overhead costs and the financial reporting qualities of the companies under study.

Originality/value

The study focuses on relationship between financial reporting and cost stickiness in companies listed on the Tehran Stock Exchange, which is the first study of its type in Iran.

Details

International Journal of Productivity and Performance Management, vol. 67 no. 9
Type: Research Article
ISSN: 1741-0401

Keywords

Article
Publication date: 7 November 2016

Yahya Bayazidi, Enayatollah Homaie Rad, Mehdi Mojahedian, Mehdi Toroski, Azita Nabizadeh, Parna Farahmand and Banafshe Felezi Nasiri

The main aim of this study is to investigate the effects of marketing and costs and research and development (R&D) investments on profitability of pharmaceutical companies…

508

Abstract

Purpose

The main aim of this study is to investigate the effects of marketing and costs and research and development (R&D) investments on profitability of pharmaceutical companies of Iran.

Design/methodology/approach

In this study, pharmaceutical companies that have been accepted in Tehran Stock Exchange until March 19, 2013 were investigated. Random-effect panel data estimator was used for this purpose.

Findings

The findings indicate that variables such as company size, capital-to-total asset ratio and debt-to-asset ratio have an effect on profitability. But, company life, advertising cost and R&D investment are ineffective on profitability.

Originality/value

Legal issues like not having patent law and pricing mechanism are reasons for the ineffective relationship between R&D and marketing costs and its effect on profitability of the Iran pharmaceutical industry.

Details

International Journal of Pharmaceutical and Healthcare Marketing, vol. 10 no. 4
Type: Research Article
ISSN: 1750-6123

Keywords

Article
Publication date: 23 November 2020

Roya Izi, Mansour Garkaz, Parviz Sayeedi and Alireza Matoufi

The purpose of this research paper is to provide a model for reporting quality of financial information based on behavior of listed companies in Tehran Stock Exchange

Abstract

Purpose

The purpose of this research paper is to provide a model for reporting quality of financial information based on behavior of listed companies in Tehran Stock Exchange which is based on structural equation modeling approaches.

Design/methodology/approach

This study uses applied research and postsemi experimental method of data collection in the field of proofing accounting research with deductive–inductive approach. The statistical population of this study includes the sample of 128 listed companies in the Tehran Stock Exchange between 2007 and 2017. The behavioral characteristics of managers (hidden variables) are measured by observable variables of myopia, opportunistic behavior and overconfidence of managers. Reporting quality of financial information is also investigated based on the scores accrued to each company and the announcement published by the Tehran Stock Exchange based on the companies' rating in terms of the quality of reporting and proper notification.

Findings

After insuring the acceptable fitness of the measurement pattern and the structure of research in both approaches, structural equations modeling and regression, the results indicate that there is a significant negative relationship between the behavioral characteristics of managers and the reporting quality of financial information.

Originality/value

Accountants have a critical and difficult responsibility of dealing with transactions and presenting them in the form of financial reports that can be used by interest groups to assess the performance of companies. This critical responsibility becomes meaningful when professional and ethical behaviors are the basis for disclosure of financial reporting. Based on the behavioral characteristics of disclosing financial reporting in emerging capital markets such as Iran, this study can be successful in developing new and theoretical literature in this field.

Details

Journal of Management Development, vol. 39 no. 9/10
Type: Research Article
ISSN: 0262-1711

Keywords

Article
Publication date: 17 January 2020

Mahdi Salehi, Fariba Jahanbin and Mohammad Sadegh Adibian

The expectation gap between auditors and users has recently been the topic of many controversies. This paper aims to evaluate the relationship between auditor’s…

Abstract

Purpose

The expectation gap between auditors and users has recently been the topic of many controversies. This paper aims to evaluate the relationship between auditor’s characteristics and audit expectation gap among information users in listed companies on the Tehran stock exchange market. In other words, the study attempts to find whether there is a significant relationship between audit components and the audit expectation gap or not.

Design/methodology/approach

The multiple regression model is used to test the hypotheses. Research hypotheses are tested using a sample of 78 listed companies on the Tehran stock exchange during 2012-2016, by using integrated data technique of the multiple regression model.

Findings

The findings show that standard audit fees are not significantly associated with the audit expectation gap. Furthermore, audit fees are negatively associated with the audit expectation gap, which provides that allocated audit price in financial statements gives useful information for external and internal individuals. Predictably, it is recommended that audit opinion significantly determines the level of the audit expectation gap. The authors also find that the independence of the director boards and audit committee members fulfill the expectation gap of individual users. Moreover, finding the negative impact of audit firms ranking on the expectation gap, supports the idea of higher ranked audit firms provide high quality services, and consequently, more reliable information. Finally, the results show that the audit record is positively associated with the audit expectation gap.

Originality/value

As all recent studies on the expectation gap were qualitative, the present study is the first paper, which measures the expectation gap quantitatively through the statistical method.

Details

Journal of Financial Reporting and Accounting, vol. 18 no. 1
Type: Research Article
ISSN: 1985-2517

Keywords

Article
Publication date: 8 January 2018

Mahdi Salehi, Masomeh Tagribi and Shayan Farhangdoust

The purpose of this paper is to examine the effect of earnings quality (as a proxy for financial reporting quality) of companies listed on the Tehran Stock Exchange (TSE…

1096

Abstract

Purpose

The purpose of this paper is to examine the effect of earnings quality (as a proxy for financial reporting quality) of companies listed on the Tehran Stock Exchange (TSE) and the quality of their financial information disclosure on stock returns.

Design/methodology/approach

The authors test the hypotheses by conducting panel data analysis on a sample of 1,680 firm-year observations from companies listed on the TSE during 2009-2014. The authors also conduct the variance inflation factor and unit root tests to control for the severity of multicollinearity in their ordinary least squares regression analysis and whether the time series variables are non-stationary and possess a unit root.

Findings

Using Francis et al. (2005) and modified Jones (1991) models as measures for earnings quality, the results are indicative of a significant and positive relationship between firms’ earnings quality and their stock returns. However, the research findings suggest that earnings management as well as disclosure quality (DQ) is not significantly associated with firms’ stock return.

Research limitations/implications

Although the authors controlled for some of the factors affecting stock returns, there are still some other factors such as the operating environment, institutional setting and/or information uncertainty that could influence stock returns, and accordingly, the authors were not able to exclude their possibility and get the most robust results. Moreover, there are several models proposed in different studies for measuring earnings quality which have led to mixed results particularly without a general consensus on what a good model is, and whether earnings quality is a priced risk factor.

Originality/value

Taken as a whole, the paper could provide new insights into the determinants of stock returns which has rarely been considered by prior finance literature. Furthermore, the unique institutional context of the paper could contribute substantially to the literature on the relationship between financial reporting and DQ and stock returns.

Details

International Journal of Productivity and Performance Management, vol. 67 no. 1
Type: Research Article
ISSN: 1741-0401

Keywords

1 – 10 of 864