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This chapter examines the existence of dynamic herding behavior by Tunisian investors in the Tunisia stock market during the revolution period of 2011–2013. The sample covers all Tunindex daily returns as a proxy for the Tunisia stock exchange index over the period 2007–2018. The author modifies the cross-sectional absolute deviation model to include all market conditions (bull and bear markets) and the geopolitical crisis effect corresponding to the Tunisian Jasmine revolution during 2011–2013, and show that herding is indeed not present in the Tunisia stock market including during its turmoil periods. These findings imply that the Tunisian emerging financial market became more vulnerable to adverse herding behavior after the revolution. There is also a clear implication for capitalist firms and angel investors in Tunisia that adverse herding behavior tends to exist on days of higher uncertainty and information asymmetry.

The purpose of this paper is to detect quantitatively the existence of anchoring bias among financial analysts on the Tunisian stock market. Both non-parametric and parametric methods are used.

Two studies have been conducted over the period 2010–2014. A first analysis is non-parametric, based on observations of the sign taking by the surprise of result announcement according to the evolution of earning per share (EPS). A second analysis uses simple and multiple linear regression methods to quantify the anchor bias.

Non-parametric results show that in the majority of cases, the earning per share variations are followed by unexpected earnings surprises of the same direction, which verify the hypothesis of an anchoring bias of financial analysts to the past benefits. Parametric results confirm these first findings by testing different psychological anchors’ variables. Financial analysts are found to remain anchored to the previous benefits and carry out insufficient adjustments following the announcement of the results by the companies. There is also a tendency for an over/under-reaction in changes in forecasts. Analysts’ behavior is asymmetrical depending on the sign of the forecast changes: an over-reaction for positive prediction changes and a negative reaction for negative prediction changes.

The evidence provided in this paper largely validates the assumptions derived from the behavioral theory particularly the lessons learned by Kaestner (2005) and Amir and Ganzach (1998). The authors conclude that financial analysts on the Tunisian stock market suffer from anchoring, optimism, over and under-reaction biases when announcing the earnings.

The purpose of this paper is to examine the relationship between information asymmetry and the quality of the external audit in the Tunisian capital market.

The paper uses panel data methodology.

The results show that the bid‐ask, a market‐based measure of information asymmetry, is negatively related to the employment of an industry specialist and big auditors; and positively related to audit firm tenure. However, further tests refine those conclusions, in that the positive association between tenure and bids‐ask spread differs between specialist and non‐specialist auditors and between Big 4 and non‐Big 4 auditors. Specifically, the paper finds that bid‐ask spreads is increasing in tenure for clients of non‐specialist and clients of non‐Big 4.

The difficulties in specifying correct models for determining the audit quality, the research analyze the auditor's quality such as big auditor, tenure, and specialist. The paper leaves this and other issues for future research.

Analyzing the effect of auditor's quality on information asymmetry and bid‐ask spreads is an emerging economy such as Tunisia is very appealing because earnings quality is the most important quality investors look for. And this research makes a link between two important areas of auditing and finance.

The purpose of this paper is to observe whether the entrenchment of managers can affect firms’ dividend disbursement decisions and investor sentiment in the Tunisia context.

The sample includes all non-financial listed stocks in the Tunisia stock exchange during the years 2004–2017. Moreover, the entrenchment of managers is measured by five proxy explained the managers rooting from all listed firms. The propensity to pay dividends is measured by the dividend yield.

The findings yield qualitatively consistent with the previous research. After controlling for the effect of a manager’s behavior and different entrenchment phase, the result shows that entrepreneurial the firm’s decision to pay dividends could be influenced by the managers’ entrenchment.

The result is limited at the level of the non-financial companies listed in the BVMT, but in future studies, the investigation with other countries can be compared.

Moreover, investors in Tunisia show their preference for a dividend to self-control and satisfaction and increase their profit, especially in an abnormal economic situation explained by the Tunisian political crisis.

The originality of this paper is to investigate both the important role of the entrenchment and cycle life of the manager on the decision to distribute dividends and the investor sentiment. Moreover, the author’s problem may be a reference for future investigation talking about the managers’ psychology like opportunism.

The purpose of this paper is to investigate and compare the weak‐form efficiency of a set of 24 African continent‐wide stock price indices and those of eight individual African national stock price indices.

Variance‐ratio tests based on ranks and signs were used to examine the weak‐form efficiency of the 32 stock price indices investigated.

On average, it was found that irrespective of the test employed, the returns of all the 24 African continent‐wide stock price indices examined in the study are less non‐normally distributed compared to the eight individual national stock price indices examined. The authors also report evidence of the African continent‐wide stock price indices having significantly better weak‐form informational efficiency than their national counterparts.

The policy implication of this evidence is that the African equity price discovery process can be significantly improved if African stock markets integrate their operations. Economically, this may contribute to improved liquidity and more efficient allocation of capital, which in turn can be expected to have a positive impact on economic growth.

The paper makes two major contributions to the extant literature. First, it offers for the first time a comparative analysis of the informational efficiencies of a sample of national stock price indices as against African continent‐wide stock price indices. Second, there is no prior evidence as to whether African stock markets can improve their informational efficiencies by integrating their operations. The paper fills this gap by demonstrating that the African equity price formation process can be improved if African stock markets integrate their operations.

This paper aims to examine the influence of firm characteristics on harmonisation of companies listed on the Egypt, Morocco and Tunisia Stock Exchanges.

This study uses a checklist based mainly on the International Financial Reporting Standards (IFRS).

The findings of the study are 6that the level of compliance with IFRS was higher in 2010 than in 2005. Multiple regression analysis indicates that the level of compliance with IFRS increases with company size, institutional ownership, industry and language of disclosure.

The findings of this study suggest that both institutional- and firm-level forces influence the harmonisation process.

This study contributes to the literature on accounting harmonisation in the context of North Africa.

The purpose of this study is to analyze the CEO compensation sensitivity to firm performance, termed as the pay-for-performance sensitivity (PPS) in the Tunisian context and to test the robustness of this relationship when corporate governance (CG) mechanisms are considered.

The consideration of past executive pay as one of the explanatory variables makes this estimation model a dynamic one. Furthermore, to avoid the problem of endogeneity, this study uses the system-GMM estimator developed by Blundell and Bond (1998). For robustness check, this study aims to use a simultaneous equation approach (three-stage least squares [3SLS]) to estimate the link between performance and CEO pay with a set of CG mechanisms to control for possible simultaneous interdependencies.

Using a sample of 336 firm-years from Tunisia over the 2009–2015 periods, this study finds strong evidence that the pay-performance relationship is insignificant and negative, and it becomes more negative or remains insignificant after introducing CG mechanisms consistently with the managerial power approach. The findings are robust to the use of alternative performance measures. This study provides new empirical evidence that CEOs of Tunisian firms abuse extracting rents independently of firm performance.

This study contributes to the unexamined research on PPS in a frontier market. This study also shows the ineffectiveness of the Tunisian CG structure and thus recommends for the legislator to impose a mandatory CG guide.

Portfolio optimization is the process of making an investment decision on a set of assets to realize high returns with low risk. It has three major stages: asset selection, asset weighting and asset management. Asset selection is an important phase because it influences asset allocation and ultimately affects the returns of a portfolio. Today, there is an increase in the number of listings on a stock exchange. Therefore, it is important for an investor to screen and select stocks for investment. This study focuses on the first stage of the portfolio optimization problem, namely, asset selection. The purpose of this study is to evaluate and select profitable stocks quoted on National Stock Exchange (NSE) for portfolio optimization.

Financial ratios are considered as the input and output parameters for evaluating the financial performance of the firms. This study adopts a hybrid principal component analysis (PCA) and data envelopment analysis (DEA) approach to evaluate the efficiency of the firms. Based on the efficiency scores, the firms are selected for the investment process.

The model helps to determine the relative efficiencies of the firms. The efficient firms are considered to be the potential stocks for investment. It helps the investors to screen the stocks from a large number of stocks quoted on NSE.

One of the limitations of the standard DEA model is that it fails to discriminate the firms when the number of input and output parameters are larger than the number of firms. To overcome this problem, either a parameter can be ignored or weight-restricted DEA can be applied. When an input/output parameter is dropped, the information in that variable is lost. Weight-restricted DEA model uses expert opinion for measuring the relative importance of input and output parameters. Expert opinion is subjective and might be biased. The PCA-DEA model helps to identify the efficient firms by improving the discriminatory power of standard DEA without any loss of information and without the need for expert opinion, which might be biased.

Asset selection is an important stage in the investment process. Selection of stocks based on the efficiency score is an easier option available to the investors. But the misclassification of firms either due to biased expert opinion or discrimination inability of DEA can be costly to an investor. The PCA-DEA model overcomes both these limitations. Investors can select the potential candidates for asset allocation based on the efficiency scores obtained using the PCA-DEA model. Further, the relative efficiencies obtained can help the firms to benchmark their performance against the best performing firms within their industry.

This paper is one of few papers to adopt the PCA-DEA framework to select stocks in the Indian stock market.

The purpose of this paper is to test the validity of irrelevant theory empirically by exploring the relationship between cash dividends, profitability, leverage and investment policy with the value of banking institutions in the Middle East and North Africa (MENA) markets.

The paper adopts Ohlson’s (1995) valuation model. The author estimates models by using static panel (random and fixed effects) techniques and the dynamic technique, namely, the GMM estimation. The empirical study covers a sample of 122 conventional and 37 Islamic banks listed on stock markets in 12 MENA countries over the period 1999–2018.

The empirical results show that dividend yield has no significant association with the value of conventional banks, whereas profitability, growth opportunity and leverage have a significant positive impact on the value of conventional banks. In contrast, the results for a sample of Islamic banks indicate that the dividend yield, profitability and leverage have a significant positive effect on the value of Islamic banks, whereas growth opportunity has no significant effect on the value of Islamic banks. Therefore, these results support, to a greater extent, the validity of the dividend irrelevance theory of Modigliani and Miller for conventional banks but would not be accepted for Islamic banks in the MENA region.

This study is restricted to a sample of one type of financial firms, banking firms listed in the MENA countries. In addition, the study has dealt with one type of dividend (the cash dividend).

Highlighting the difference between conventional and Islamic banks is crucial to understanding dividend policy behavior and to providing investors information to be integrated in their valuation setting to make informed corporate decisions.

To the best of the author’s knowledge, the present study is the first of its kind that it draws a comparative analysis by testing empirically the validity of the Irrelevant Theory to banks in the MENA region covering a long time period in the recent past.