The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/1759-0817.htm Dividend policy and shareholders’ wealth. A comparative analysis of Shariah-compliant and noncompliant nonfinancial firms in Pakistan Saeed Akbar and Shehzad Khan Dividend policy and shareholders’ wealth Received 9 January 2023 Revised 4 August 2023 17 October 2023 Accepted 2 December 2023 Institute of Business Studies and Leadership, Abdul Wali Khan University Mardan, Mardan, Pakistan Zahoor Ul Haq Pakhtunkhwa Economic Policy Research Institute, Abdul Wali Khan University Mardan, Mardan, Pakistan, and Muhammad Yusuf Amin Institute of Business Studies and Leadership, Abdul Wali Khan University Mardan, Mardan, Pakistan Abstract Purpose – The purpose of this study is to comparatively analyze the effect of dividend policy on shareholders’ wealth in Shariah-compliant (SC) and noncompliant (NC) nonfinancial firms in Pakistan. Design/methodology/approach – All the nonfinancial firms listed on the Pakistan stock exchange have been taken as a sample for 2016–2021. The Karachi Meezan index screening criteria were applied to screen SC firms. Based on the BPLM and Hausman test results, the authors used the fixed-effect and pooled OLS model for SC and NC firms, respectively. The F-test was used to compare the effect of each dividend policy variable on shareholders’ wealth for both firm types. Findings – The findings reveal that the dividend policy does affect the shareholders’ wealth in both firm types. Dividend per share (DPS), dividend yield (DY) and earnings per share significantly affect the shareholders’ wealth in SC firms. For NC firms, the dividend payout, DPS and DY are critical. Moreover, the F-test results show that the DPS, DY and leverage effect on the shareholders’ wealth significantly differ for both firm types. Research limitations/implications – This study fills the research gap in the Pakistani context specifically as well as globally by providing important insights into the relationship between a firm’s dividend policy and shareholders’ wealth for SC and NC firms. In addition, this study comprehensively compares the results for both firm types, which is also lacking in the existing literature. Because this study is based in Pakistan, the generalizability of the results would be limited. Practical implications – The findings of this study are helpful for the management of SC and NC firms in devising their dividend policies that can maximize their shareholders’ wealth. This study also provides guidance and knowledge to investors in choosing companies for their investments that can maximize their wealth. Originality/value – To the best of the authors’ knowledge, this is the first study that analyzes the relationship between dividend policy and shareholders’ wealth for SC firms in Pakistan. It is also the first study that comprehensively compares the dividend policy relationship with shareholders’ wealth for SC and Journal of Islamic Accounting and Business Research © Emerald Publishing Limited 1759-0817 DOI 10.1108/JIABR-01-2023-0007 JIABR NC firms. In addition, using the F-test for joint hypotheses to compare the specific effect of each dividend policy variable is a methodological contribution of the study. Keywords Dividend policy, Shareholders’ wealth, Shariah-compliant, Noncompliant, Dividend payout, Dividend yield, Dividend per share, Earnings per share Paper type Research paper 1. Introduction 1.1 Background of the study In financial management, the goal of a business firm is to maximize its shareholders’ wealth. Therefore, all the decisions of firms, including the dividend decision, revolve around the objective of maximizing the shareholders’ wealth. A dividend decision is one of the key corporate finance decisions that affect firm value and shareholders’ wealth. According to Gallagher (2003), investors do not like surprises, so firms must have a clear dividend policy. However, not all shareholders have similar preferences. Some shareholders like to receive consistent dividends, while others prefer their earnings to be reinvested in the business to receive higher dividends in the future. Hence, given the objective of shareholders’ wealth maximization, the question of whether to pay dividends or to retain them has been a matter of extensive debate for the last few decades (David et al., 2022; Farrukh et al., 2017; Ifeanyichukwu and Yusuf, 2021; Aminu and Salawudeen, 2019; Khan et al., 2018; Ogunseye and Omoniyi, 2020; Ramcharran, 2001; Ramadan, 2013; Ullah et al., 2021). Nevertheless, the existing literature and theories hold contradictory views about the relationship between dividend policy and shareholders’ wealth. The dividend irrelevance theory says the dividend policy is irrelevant and does not affect shareholders’ wealth (Black and Scholes, 1974; Miller, 1986; Miller and Modigliani, 1961). On the other hand, the bird-inhand (Gordon, 1959), signaling (Battacharya, 1979; Miller and Rock, 1985) and clientele (Elton and Gruber, 1970; Miller, 1977) theories postulate that dividend policy does affect shareholders’ wealth. However, the bird-in-hand and signaling theories predict a positive relationship, while the clientele theory predicts a negative relationship between dividend policy and shareholders’ wealth. All the theories have been supported and refuted by empirical researchers. Hence, the question of why firms pay dividends and how it affects shareholders’ wealth remains unanswered, and the dividend decision and its effect on shareholders’ wealth are still a puzzle. However, the available literature and theories of dividend decisions pertain to conventional firms. Little attention has been given to the Islamic finance sector, which has become an attractive alternative sector in the last few years. According to Biancone et al. (2020), literary interest in the Islamic finance sector is growing because it is a relatively new issue. Moreover, according to Farooq and Tbeur (2013), companies may attract religiously driven Muslim investors to their stocks only if they follow Shariah principles. As a result, more companies are now becoming Shariah-complaint, and dedicated stock market indices have been constructed to fulfill the needs of religiously motivated investors (Akbar et al., 2023; Yildirim et al., 2018). Shariah-compliant (SC) firms operate under the Shariah guidelines that limit interest-bearing debt financing, cash, accounts receivable and interest-bearing income. These restrictions affect the dividend-paying behavior of SC firms and make it different than that of noncompliant (NC) firms (Anwer et al., 2021). It is a unique opportunity to investigate how SC firms adjust their dividend policies while adhering to Shariah principles. Empirical studies have confirmed that SC firms are more likely to pay dividends, and their dividend payout (DPO) is higher than that of NC firms (Anwer et al., 2021; Bakri and Yong, 2023; Ben-Nasr and Ghouma, 2022). However, it is also worthwhile to study how the different dividend-paying behavior of SC firms affect their shareholders’ wealth. Given the objective of shareholders’ wealth maximization, the issue of how the dividend policies of SC firms affect their shareholders’ wealth has been neglected in the literature. Therefore, the present study examines the effect of the dividend policy on shareholders’ wealth for SC as well as NC firms in Pakistan. There are several motivations for this study. First, the amount of literature that examines the dividend policy of SC firms is quite limited, given the importance of the dividend decision (see Anwer et al., 2021; Bakri and Yong, 2023; Ben-Nasr and Ghouma, 2022; Farooq and Tbeur, 2013; Naz et al., 2017; Nor et al., 2020). Second, another issue is that the existing studies focus on dividend-paying behavior and likelihood, while our focus is on the relationship between dividend policy and shareholders’ wealth. Third, even fewer studies are available that comparatively examine the dividend policy of SC and NC firms (see Bakri and Yong, 2023; Farooq and Tbeur, 2013; Naz et al., 2017). However, most of these studies also focus on dividend-paying behavior and not on how the dividend policy affects the shareholders’ wealth. Fourth, Pakistan is a sizable Muslim-majority country where Shariah principles guide the investment decisions of most of the investors. It is the eighth most developed Islamic finance market, according to the Global Islamic Economy Report 2021. According to the KSE Meezan30 index 2021 re-composition list, over 60% of firms are SC. In addition, the Pakistan Stock Exchange received the best Islamic stock exchange award in 2021 from the Global Islamic Finance Awards (GIFA). All these facts make it an interesting Islamic market to study. However, there is a lack of literary evidence in Pakistan on the dividend issue of SC firms. Naz et al. (2017) explored the dividend decisions of SC and NC firms in Pakistan. However, they aimed to study the effect of firm-specific factors on the dividend policy while we examined the effect of the dividend policy on shareholders’ wealth. The study contributes to the scarce literature globally and in Pakistan in particular. To the best of the authors’ knowledge, this is the first study that analyzes the effect of the dividend policy on shareholders’ wealth in SC firms. In addition, we estimate and compare the results for both SC and NC firms that are lacking in the existing literature. Moreover, we investigate which theories better explain the dividend decisions of both firm types. As an addition to the literature, we use the F-test to compare the specific effect of each dividend policy variable on shareholders’ wealth for both firm types. 2. Literature review 2.1 Dividend theories 2.1.1 Irrelevance theory. Miller and Modigliani’s irrelevance thesis, introduced in 1961, is the foundation of modern corporate finance theory. Miller and Modigliani contended that dividend policy does not affect the cost of capital or business value in a world without taxes or transaction costs. They established that when investors can generate any income pattern by selling and buying shares, the expected return required to persuade investors to hold a firm’s shares is independent of how it structures its dividend payments and new share issuances. As a result, dividend policy has no bearing on company value, determined purely by its basic earning potential and business risk. Subsequent studies by Black and Scholes (1974) and Miller (1986) also support the dividend irrelevance proposition. 2.1.2 Clientele effect. The clientele theory hypothesizes that investors are attracted to a firm because its dividend policy suits their needs. For example, young investors interested in their portfolio’s growth prefer retained earnings to be reinvested rather than paid out as dividends. On the other hand, old investors would like to receive dividends now rather than in future growth (Gallagher, 2003). The shareholders’ preferences also depend on the tax Dividend policy and shareholders’ wealth JIABR bracket and the transaction costs (Hussainey et al., 2011). Shareholders in high tax brackets will prefer low dividends and vice versa (Battacharya, 1979; Miller and Rock, 1985). 2.1.3 Bird-in-hand theory. The bird-in-hand theory was proposed by Gordon (1959). The theory is based on the notion that “A bird in the hand is worth two in the bushes.” In a world of uncertainty and information asymmetry, investors prefer to receive dividends today rather than increased future earnings because of the reinvestment of retained earnings (Al-Malkawi, 2007). Though reinvestment of retained earnings will send a positive signal to the market, and the share prices may increase in the future, there is uncertainty about whether the benefits will actually be received. Therefore, the shareholders would like to receive the dividends today and can invest where they want. If this notion is true, the stock prices of the companies that pay regular and full dividends should be higher than those that retain the earnings for reinvestment purposes (Gallagher, 2003). 2.1.4 Signaling theory. The signaling theory is based on the asymmetric information notion, where the management of a firm has more information than the investors or shareholders. Therefore, it uses dividends as a tool to convey private information to investors (Al-Malkawi, 2007). If the management starts paying dividends higher than expected, the investors perceive it as a positive prospect and vice versa. It implies that a firm’s dividend policy sends a signal to the market. Therefore, the management must be aware of this and devise their dividend policy accordingly. 2.2 Prior literature on noncompliant firms The issue of dividend policy has remained a central focus of the researchers, among other corporate finance decisions. However, there is a lack of consensus over how firm-specific factors affect the shareholders’ wealth; therefore, research is still being carried out on this particular issue. Starting from the work of Miller and Modigliani (1961), ample literature is available on dividend policy and its effect on shareholders’ wealth. For example, Black and Scholes (1974) and Miller (1986) found empirical evidence that a firm’s dividend policy has no permanent effect on its share price. On the other hand, Asquith and Mullins (1983) analyzed the effect of dividends on the share price of 168 firms over ten years and found strong support that dividends positively affect the share price. Hence, they argue that dividend policy does affect the shareholders’ wealth. On the other hand, Gordon (1959, 1962) argues that dividend policy affects a firm’s share price, and the current share price reflects the current and future dividend payments. Later on, Walter (1956) studied the relationship between dividend policy and stock price from the internal rate of return perspective. The author argues that as far as the internal rate of return is higher than the market rate, retaining the dividends will increase the share price, and dividend payments will decrease the share price. Elton and Gruber (1970) found a significant but weak effect of DPOs on the share price. Similarly, Horne and McDonald (1971) found in their study that share prices decrease because of dividend payments through excessive financing from equity. Lamont (1998) found that dividends convey information to investors about their future expected returns. Later down the line, Azhagaiah and Priya (2008) studied the effect of the dividend policy on shareholders’ wealth in India from 1996 to 2006. They found that firms’ DPOs positively affect shareholders’ wealth. Other key determinants of the shareholders’ wealth are sales growth, investment decisions, capital structure decisions, profit margin improvement, and the cost of capital. Likewise, Bawa and Kaur (2013) analyzed the effect of the dividend policy on shareholders’ wealth in Indian IT firms. They concluded that shareholders’ wealth increased in the long run for dividend-paying firms compared to nonpaying firms. Okafor et al. (2011) found that the DPO ratio of Nigerian firms has a strong positive effect on share price during some periods and a weak effect in others. Ojeme et al. (2015) also found empirical evidence that the dividend policy of Nigerian banks significantly affects their shareholders’ wealth. In another study by Ifeanyichukwu and Yusuf (2021), it was found that there is a significant positive effect of cash dividends and price–earnings ratio on the share price of the listed industrial goods companies in Nigeria. In addition, they could not find any significant relationship between the share dividend and the share price. In a recent study, David et al. (2022) found that dividend per share (DPS) and firm size positively affect shareholders’ wealth in Nigerian banks. However, DPOs and leverage proved insignificant for shareholders’ wealth. Likewise, Hussainey et al. (2011) examined the relationship between dividend policy and the share price of firms in the United Kingdom. By using multiple regressions, they found a positive relationship between dividend yield (DY) and stock price changes and a negative relationship between DPO and stock price. In another study on Malaysian construction and material companies, Zakaria et al. (2012) found that DPO, leverage and firm size significantly explain the share price volatility. However, growth, earnings volatility and DY were insignificant. Similarly, Hashemijoo et al. (2012) examined 142 Malaysian companies for the period 2005–2010 and found an inverse relationship between DY, DPO, firm size, and stock returns. In another study on Korean firms, Kim (2021) argues that the relationship between DY and shareholders’ stock returns depends on firms’ dividend reputation. The author also found no relationship between DY and stock return for firms with no dividend reputation. Sijol and Basit (2016) examined the literature on the relationship between dividend policy and shareholders’ wealth and found mixed results. In their study in Bangladesh, Al-Hasan et al. (2013) found that paying dividends affects the shareholders’ wealth more than retaining them. Balagobei and Selvaratnam (2015), in a study on 12 manufacturing firms in Sri Lanka, confirmed a significant relationship between dividend policy and shareholders’ wealth. The authors found that DPS and profitability positively affect shareholders’ wealth. Besides international literature, considerable literature is available that studies the effect of dividend policy on shareholders’ wealth in Pakistan. For example, Akbar and Baig (2010) examined the effect of dividend announcements on the share price of 79 companies during the period 2004–2007. They found that there are no abnormal returns because of dividend announcements. In another study, Asghar et al. (2011) studied the effect of dividend policy on the stock price risk of companies from five sectors. The authors found that the DY significantly affects share price volatility. Similarly, Gul et al. (2012) investigated the relationship between dividend policy and shareholders’ wealth in 75 listed firms from 2005 to 2010. They found a significant association between dividend policy and shareholders’ wealth for dividend-paying firms. In another study, Ansar et al. (2015) analyzed the effect of dividend policy on shareholders’ wealth for 30 listed firms. The authors found a significant positive effect of DPS, return on equity, lagged share price and retained earnings on shareholders’ wealth as measured by the market share price. Iqbal et al. (2014) also found a significant positive effect of dividend policy on shareholders’ wealth in 35 firms from three sectors. In another study, Arslan and Zaman (2014) examined 111 manufacturing firms listed on the Karachi Stock Exchange for the period 1998–2009. The authors found a significant effect of DY, firm size, and price-to-earnings ratio on stock returns. Similarly, Hunjra et al. (2014) studied 63 manufacturing firms from Pakistan for the period 2006–2011 and found a significant relationship between DPO, DY and stock price. In another study by Farrukh et al. (2017), a significant positive relationship was found between DPS, DY and share price. Khan et al. (2018) Dividend policy and shareholders’ wealth JIABR found empirical evidence that dividend payments positively affect shareholders’ wealth. In a recent study, Ullah et al. (2021) found a significant relationship between dividend policy and shareholders’ wealth for selected sectors in Pakistan. The authors found a positive effect of DPS and price-to-earnings ratio while a negative effect of profitability on the stock price. Similarly, Ansar et al. (2015) examined 30 manufacturing firms from Pakistan and found a significant positive effect of DPS, retained earnings, and return on equity on shareholders’ wealth. Alim et al. (2014) also found empirical evidence in favor of the positive effect of dividend policy on shareholders’ wealth in the textile sector of Pakistan. 2.3 Prior literature on Shariah-compliant firms Besides the empirical studies on conventional firms, a few recent studies also examine the dividend policy of SC firms. However, these studies focus on dividend-paying behavior and likelihood. For instance, Farooq and Tbeur (2013) found in their research on firms in the MENA region that Sharia-compliant firms have higher payout ratios and more likelihood of paying dividends than NC ones. Anwer et al. (2021) studied the effect of Shariah compliance on the dividend decisions of firms in the United States. The findings reveal that the likelihood of dividend payment is positively related to free cash flow, profitability, and retention ratio. Moreover, it is negatively related to financial constraints, governance quality and the market-to-book asset ratio. Ben-Nasr and Ghouma (2022) also found that Shariacompliant firms pay more dividends than NC firms. Their study was based on firms from 17 Islamic countries. Haron and Siraj (2021) investigated the effect of SC firms’ investment, debt and dividend policies on their stock returns in Indonesia. The authors found that the dividend policy significantly influences stock returns. In a most recent study, Bakri and Yong (2023) examined the determinants of the dividend policy of SC and NC firms. The authors found significant differences in the DPOs of both firm types. The results revealed that growth opportunities, firm size, free cash flow, and profitability were the significant determinants of dividends for SC firms. On the contrary, the significant determinants of dividends for NC firms were profitability, firm size, growth opportunities and risk. From the literature review, it is evident that there is an ample amount of empirical literature on the issue of dividend policy and shareholders’ wealth for conventional firms. However, little or no attention has been given to SC firms. Moreover, the available studies on SC firms focus on the determinants of the dividend policy and dividend-paying likelihood (Farooq and Tbeur, 2013; Yousef et al., 2021) and not on how the dividend policy affects the shareholders’ wealth. The present study fills this gap by not only studying the effect of dividend policy on shareholders’ wealth in SC and NC firms but also making a comparison of both. We test the following hypotheses for both firm types to achieve our objective. The hypotheses have been formulated based on the previous literature: H1. The dividend payout ratio positively relates to the market share price. H2. The dividend yield ratio positively relates to the market share price. H3. The dividend per share ratio positively relates to the market share price. H4. The earnings per share ratio positively relates to the market share price. Besides the above hypotheses, we also test some joint hypotheses to see whether the effect of each dividend policy variable is the same on shareholders’ wealth for SC and NC firms. We test the following joint hypothesis for each explanatory variable: H5. The effect of the dividend payout ratio on the market share price is the same for SC and NC firms. 3. Methodology 3.1 Data and sample The study uses all the dividend-paying SC- and NC-listed firms as a sample. The data for sample firms have been extracted from the Eikon DataStream for 2016–2021. Financial firms, firms that did not remain listed throughout the study period, and firms with negative equity were excluded. The final sample constitutes a panel of 66 SC and 50 NC firms. Following previous studies (Akbar et al., 2023; Yildirim et al., 2018), all the variables were winsorized at 1% and 99% to remove the effect of the outliers. Dividend policy and shareholders’ wealth 3.2 Variables The dependent variable is the shareholders’ wealth, measured by the market price per share (MPS), while the independent variables are the DPO, DPS, DY and earnings per share (EPS). In addition to the main variables, we have also taken three control variables frequently used in the previous literature. The control variables include firm profitability (PROF), firm size (FS) and leverage (LEV). The list of variables, their measurements and reference studies are given in Table 1. 3.3 Model specification The study examines dividend policy’s effect on shareholders’ wealth in SC and NC firms in Pakistan. For this purpose, we use the following model for both firm types: MPSit ¼ a þ b1 DPOit þ b2 DYit þ b3 DPSit þ b4 EPSit þ b5 PROFit þ b6 FSit þ b7 LEVit «it Variables Dependent Market price per share (MPS) Independent Dividend payout ratio (DPO) Dividend per share (DPS) Dividend yield (DY) Earnings per share (EPS) Control Profitability (PROF) Firm size (FS) Leverage (LEV) Source: Authors’ own work (1) Measurement References The current market price per share Ansar et al. (2015) Dividends paid/net income Dividends paid/no. of common shares outstanding Dividend per share/price per share Net income/no. of common shares outstanding Anwer et al. (2021) Iqbal et al. (2014) Earnings available to common shareholders/total assets Natural logarithm of total assets Total debt/total equity Nor et al. (2020) Nor et al. (2020) Bakri and Yong (2023) David et al. (2022) Sukmawardini and Ardiansari (2018) Table 1. List of variables, their measurement and reference studies JIABR where MPSit is the dependent variable and represents the market price per share while DPOit, DYit, DPSit, EPSit, PROFit, FSit and LEVit are the independent variables representing the dividend payout ratio, dividend yield, dividend per share, earnings per share, profitability, firm size and leverage, respectively. 3.4 Joint hypotheses test We test some joint hypotheses on whether the effect of dividend policy variables is the same on the shareholders’ wealth in SC and NC firms, following Akbar et al. (2023) and Amin et al. (2019). For this purpose, we generate dummies for Shariah (SH) and non-Shariah (NS) firms and interact them with each explanatory variable. Afterward, we fit the interaction terms into our base model to test our joint hypotheses. The base model takes the following form: MPSit ¼ a þ b1 SHDPOit þ b2 NSDPOit þ b3 SHDYit þ b4 NSDYit þ b5 SHDPSit þ b6 NSDPSit þ b7 SHEPSit þ b8 NSEPSit þ b9 SHPROFit þ b10 NSPROFit þ b11 SHFSit þ b12 NSFSit þ b13 SHLEVit þ b14 NSLEVit þ «it (2) Then we use the F test for testing the null hypothesis of the same coefficient of the explanatory variables such as b1 ¼ b2, b3 ¼ b4 and so on, for SC and NC firms. 4. Results and discussion 4.1 Descriptive statistics Table 2 summarizes the descriptive statistics for both firm types and the result of the twosample t-test for mean comparison. The two-sample t-test results show that SC firms have higher share prices than NC firms. Moreover, SC firms pay significantly higher dividends than NC firms. Similarly, SC firms’ DYs and EPS ratios are significantly higher than their NC peers. Interestingly, Shariah-complaint firms earn more profits on their assets compared to NC firms. In addition, SC firms are larger in size than NC firms. Lastly, SC firms’ leverage ratio is substantially lower than that of NC firms, with a mean value of 44.285. This is because of the 37% debt threshold, which Shariah-complaint firms cannot exceed. Variable Obs MPS DPO DPS DY EPS PROF FS LEV 396 396 396 396 396 396 396 396 Shariah-compliant mean SD 528.862 35.347 21.092 3.544 33.844 9.813 16.018 44.285 1,285.165 28.487 60.902 3.713 79.462 8.929 1.642 100.801 Two-sample t-test p-value Noncompliant Mean SD Obs 4.3220 6.8680 4.2954 2.2925 4.7173 6.2624 3.6324 6.1094 0.000 0.000 0.000 0.022 0.000 0.000 0.0002 0.001 225.108 24.616 6.81 3.598 15.878 6.775 16.145 223.118 300 300 300 300 300 300 300 300 923.273 26.104 29.028 3.603 36.705 6.103 1.199 659.738 Notes: This table shows the descriptive statistics and the results of the two-sample t-test for mean Table 2. comparison of SC and NC firms. The descriptive statistics include mean, standard deviation and number of Descriptive statistics observations and two-sample t-test Source: Authors’ own work 4.2 Correlation The correlation matrix for SC and NC firms is shown in Table 3, Panels A and Panel B, respectively. For SC firms, all the variables positively correlate with the MPS. DPS shows a very high correlation of 0.910 with the dependent variable MPS. Similarly, the correlation between the EPS and the MPS is also high. On the other hand, we do not see a very high correlation among the independent variables except between EPS and DPS. However, this is because of the nature of the variables, i.e. the higher the EPS, the higher the dividends per share. Similarly, all the explanatory variables show a positive correlation with the dependent variable MPS for NC firms, except for DY. In addition, a high correlation was recorded for DPS, EPS, and ROE. We also observe a high correlation between the DPS and ROE. The high correlations among the independent variables may also indicate the problem of multicollinearity, which may distort our results. For this purpose, we estimate the variance inflation factor to see whether our model has a multicollinearity problem. The results of the variance inflation factor are given in Table 4 Panel A and Panel B. We see that all the values of VIF for both firm types are below 10. According to Gujarati and Porter (2009), if the value of VIF is less than 10, there is no multicollinearity issue. Therefore, we conclude that our data has no multicollinearity issue. Dividend policy and shareholders’ wealth 4.3 Selection of the appropriate estimator The validity of the results depends on choosing the appropriate estimator based on the nature of the data. For this purpose, we have used two tests: the Breusch and Pagan Lagrangian multiplier test to choose between pooled OLS and the random/fixed-effects Variables (1) (2) (3) (4) (5) (6) (7) (8) Panel A: matrix of correlations (Shariah-compliant firms) (1) MPS 1.000 (2) DPO 0.399 (3) DPS 0.910 0.402 1.000 (4) DY 0.050 0.306 0.238 1.000 (5) EPS 0.842 0.356 0.865 0.151 (6) PROF 0.357 0.517 0.344 0.186 (7) FS 0.232 0.241 0.204 0.120 (8) LEV 0.271 0.000 0.182 0.143 1.000 0.384 0.264 0.076 1.000 0.152 0.177 1.000 0.004 1.000 Panel B: matrix of correlations (noncompliant firms) (1) MPS 1.000 (2) DPO 0.407 1.000 (3) DPS 0.969 0.437 1.000 (4) DY 0.041 0.441 0.057 1.000 (5) EPS 0.821 0.317 0.856 0.095 (6) PROF 0.335 0.319 0.355 0.298 (7) FS 0.212 0.261 0.240 0.280 (8) LEV 0.077 0.060 0.060 0.122 1.000 0.470 0.259 0.022 1.000 0.362 0.068 1.000 0.151 1.000 Notes: Panel A: This table exhibits the correlation matrix for SC firms. The dependent variable is MPS, while the independent variables are DPO, DPS, DY, EPS, PROF, FS and LEV. Panel B: This table exhibits the correlation matrix for NC firms. The dependent variable is MPS, while the independent variables are DPO, DPS, DY, EPS, PROF, FS and LEV Source: Authors’ own work Table 3. Matrix of correlations JIABR Table 4. Results of VIF Variable VIF 1/VIF Panel A: VIF (Shariah-compliant firms) DPS EPS DPO PROF DY LEV FS Mean VIF 4.664 4.442 1.597 1.543 1.194 1.176 1.117 2.247 0.214 0.225 0.626 0.648 0.838 0.85 0.895 . Panel B: VIF (noncompliant firms) DPS EPS DPO PROF DY FS LEV Mean VIF 4.597 4.47 1.669 1.514 1.405 1.244 1.044 2.278 0.218 0.224 0.599 0.66 0.712 0.804 0.958 . Source: Authors’ own work model and the Hausman specification test to choose between the random and fixed-effects models. The results are given in Table 5. As the p-value for the BPLM test is significant for SC firms, we reject the null hypothesis that error variances are all equal and conclude that error variances are not equal. More specifically, there are substantial differences in panels. Hence, pooled OLS cannot be used; instead, the random effects or fixed-effects model shall be used. Next, the Hausman (1978) specification test is used to choose between the random and fixed-effects models. Because the p-value of the Hausman test is significant, the preferred model, in this case, is the fixedeffects model for SC firms. However, the value of the BPLM test for NC firms is insignificant at 5%. Hence, we conclude that the error variances are all equal, and the preferred model will be the pooled OLS. We also checked the data for heteroskedasticity and serial correlation. We applied the modified Wald test for heteroskedasticity and the Wooldridge test for serial correlation. The results are presented in Table 6. The p-value for the Wald test is significant at 5%; thus, we reject the null hypothesis of homoskedasticity and conclude that the data contains heteroskedasticity. For the second Test BPLM (chibar2(01)) p-value Hausman p-value Shariah-compliant Noncompliant 83.75 0.000 193.99 0.000 0.05 0.4085 Table 5. Results of BPLM and Note: The table presents the results of the BPLM test and the Hausman test for SC and NC firms Hausman tests Source: Authors’ own work test, we accept the null hypothesis of no first-order serial correlation in the data as the pvalue is insignificant at 5%. To handle the problem of heteroskedasticity, we have used the robust option in Stata. 4.4 Results of the main model Tables 7 and 8 present the results of the main models for SC and NC firms, respectively. The dependent variable is the MPS, while the independent variables are DPO, DY, DPS, EPS, PROF, FS, and LEV. The results reveal a positive relationship of DPS and EPS with MPS for SC firms and a positive relationship of DPO and DPS with MPS for NC firms. Because DPO, DPS and EPS are the proxies of dividend policy, the positive relationship supports the birdin-hand and signaling theories. The former postulates that shareholders prefer to receive consistent dividends because of uncertainty about future capital gains (Gordon, 1959), while the latter holds that, because of information asymmetry, firms use their dividends as a signal to convey information to shareholders about their future earnings. Hence, a high dividend payment reflects high future earnings and vice versa (Battacharya, 1979; Miller and Rock, 1985). The results are in line with many previous studies, such as David et al. (2022), Farrukh et al. (2017), Ullah et al. (2021), and Khan et al. (2018). On the other hand, DY showed a significant negative relationship with MPS for both firm types. The negative relationship of DY is consistent with the clientele theory that investors prefer to invest in stocks with particular DYs. Investors in high tax brackets are more inclined to hold stocks with low DY and vice versa (Issa, 2015). The findings are in line with Tests Modified Wald test p-value Wooldridge test p-value Shariah-compliant Noncompliant 14308.92 0.0000 3.436 0.0689 57310.03 0.0000 1.774 0.1917 Note: H1 ¼ Data is homoscedastic; H2 ¼ No first-order serial correlation in the data Source: Authors’ own work MPS Coef. St. err. t-value p-value DPO DPS DY EPS PROF FS LEV Constant R-squared F-test 0.922 1.251 18.721 1.987 5.91 12.116 0.424 623.769 0.656 0.712 4.343 0.369 2.088 34.208 0.213 548.015 0.215 12.675 1.41 0.160 1.76 0.080 4.31 0.000 5.38 0.000 2.83 0.005 0.35 0.723 1.99 0.048 1.14 0.256 Number of obs Prob > F [95% conf. Interval] 0.367 0.149 27.265 1.26 1.802 79.414 0.843 454.361 2.212 2.651 10.176 2.714 10.018 55.183 0.004 1701.898 396.000 0.000 Dividend policy and shareholders’ wealth Table 6. Results of heteroskedasticity and serial correlation tests Sig. * *** *** *** ** Notes: The table shows the results of the fixed-effect model for SC firms. MPS is the dependent variable, while DPS, DY, EPS, PROF, FS and LEV are the independent variables. ***, ** and * represent the significance level at 1, 5 and 10%, respectively Source: Authors’ own work Table 7. Results of the fixedeffect model for Shariah-compliant firms JIABR Table 8. Results of the pooled OLS for noncompliant firms MPS Coef. St. err. t-value p-value DPO DPS DY EPS PROF FS LEV Constant Mean dependent var R-squared F-test 1.188 30.89 29.51 0.574 3.869 0.278 0.013 67.298 0.595 0.888 3.953 0.692 2.423 11.176 0.019 175.471 225.108 0.951 801.560 2.00 0.047 34.80 0 7.46 0 0.83 0.407 1.60 0.111 0.02 0.98 0.67 0.501 0.38 0.702 SD dependent var Number of obs Prob > F [95% conf. Interval] 0.018 29.143 37.291 1.937 0.9001 21.717 0.024 278.05 Sig. 2.359 32.637 21.729 0.788 8.638 22.273 0.049 412.646 923.273 300.000 0.000 ** *** *** Notes: The table shows the results of the pooled OLS for NC firms. MPS is the dependent variable, while DPS, DY, EPS, PROF, FS and LEV are the independent variables. *** and ** represent the significance level at 1 and 5%, respectively Source: Authors’ own work those of Hunjra et al. (2014), Hussainey et al. (2011), Aminu and Salawudeen (2019), and Okafor et al. (2011). However, no significant effect of DPO on MPS for SC firms and EPS on MPS for NC firms could be found, supporting the dividend irrelevance theory. According to this theory, a firm’s dividend policy does not affect its shareholders’ wealth (Black and Scholes, 1974; Miller, 1986; Miller and Modigliani, 1961). The insignificant relationship was also found by David et al. (2022), Khan et al. (2018) and Chenchehene and Mensah (2015), among others. For control variables, the results of PROF and LEV are significant for SC firms. PROF is positively related to MPS, while LEV is negatively related to MPS. The findings reveal that share prices increase with increased profits while decreases with increased debt financing. The reason is that more profits result in more earnings available to shareholders and, as a result, more EPS, thus increasing shareholders’ wealth. On the other hand, increased debt financing decreases available earnings for shareholders because of increased financing costs. The findings are consistent with previous studies by Abdullah et al. (2015), Ansar et al. (2015), Hashemijoo et al. (2012), Khan et al. (2011), and Masum (2014). Based on the findings, we accept H2 and H3 for both firm types, H1 for NC firms only and H4 for SC firms only, while we reject H3 for both firm types. Table 9. Results of the joint hypotheses test Hypothesis F-statistic The effect of DPO on MPS is the same for SC and NC firms The effect of DPS on MPS is the same for SC and NC firms The effect of DY on MPS is the same for SC and NC firms The effect of EPS on MPS is the same for SC and NC firms The effect of PROF on MPS is the same for SC and NC firms The effect of FS on MPS is the same for SC and NC firms The effect of LEV on MPS is the same for SC and NC firms 0.00 16.57*** 12.95*** 1.68 1.76 2.59 7.25*** Note: ***Show significance at the 99% levels Source: Authors’ own work 4.5 Results of joint hypotheses test We also study the specific effect of each independent variable on the MPS and whether it differs for both firm types. For this purpose, we used the F-test to test the null hypothesis of the same relationship between each independent variable on the MPS for SC and NC firms. The results of the F-test are given in Table 9. The significant results of DPS, DY and LEV imply that the effect of these dividend policy variables on the MPS is significantly different for both firm types. Hence, we reject our hypothesis of the same relationship for DPS, DY and LEV. However, the coefficients of DPO, EPS, PROF and FS are not statistically different for SC and NC firms. Therefore, we cannot reject our hypothesis for DPO, EPS, PROF and FS and conclude that the relationship of these variables with the MPS is the same for both firm types. 5. Conclusion The present study aims to analyze the effect of dividend policy on shareholders’ wealth in SC and NC firms listed on the Pakistan Stock Exchange for 2016–2021. We used the fixedeffects model and pooled OLS to draw our conclusions based on the results of the BPLM and Hausman tests. The findings reveal that the dividend policy does affect the shareholders’ wealth for both firm types. The DPS, DY and EPS, being the proxies of dividend policy, were significant for SC firms. The DPS and EPS showed a positive relationship with market price per share, while the DY exhibited a negative relationship with market price per share. On the other hand, DPO, DY and DPS were found to have a significant effect on the market share price of NC firms. The effect of DPO and DPS was positive, while it was negative for DY. For control variables, only profitability and leverage were found significant for SC firms, while no significant relationship could be found for any control variable for NC firms. Furthermore, it was found that the relationship between DPS, DY, leverage and the market price per share was substantially different for SC and NC firms. It was further found that the Bird-in-Hand, Signaling, and Clientele theories are jointly applicable to both firm types, and no single theory could exclusively explain the results. The study has specific implications. The findings of this study provide valuable input to the management of SC and NC firms regarding the reliable dividend policy factors that affect the shareholders’ wealth. The results will help them devise an optimal dividend policy to maximize shareholders’ wealth. Second, it explicitly shows how Shariah compliance affects the relationship between dividend policy measures, profitability, firm size, leverage and the shareholders’ wealth. Shareholders and potential investors can also benefit from the study’s findings. They will better understand the critical firm-specific factors and their effect on the stock price to make informed investment decisions. Lastly, it identifies the key dividend theories applicable in Pakistan concerning SC and NC firms. 5.1 Research limitations and future research directions The present study is based on firms from a single country, i.e. Pakistan. This limits the generalizability of the results. 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