Are Trade Policies Performance Enhancing? The Special Case of the GCC Countries

Purpose – The purpose of this study is to investigate the extent to which trade policies affect the performance of firms in the six countries of the Gulf Cooperation Council (GCC): Saudi Arabia, Kuwait, the United Arab Emirates, Qatar, Bahrain, and Oman. The finance literature, theoretically and empirically, postulates that the efficient management of trade policies (i.e., trade debtors, inventory, and trade credit policies) relates positively to corporate performance. This study, however, conjectures that in a different and distinct business setting, corporate performance might not be related to how a firm manages its trade policies, or at least not significantly. Design/Methodology/approach – The study sample is comprised of all nonfinancial firms in the Gulf Cooperation Council (GCC) countries. The study uses several ratios in the literature to proxy for trade policies and corporate performance. It also employs related and alternative econometric models in order to corroborate the results. Findings – Contrary to a documented worldwide evidence, the results of the study reveal that short-term trade policies – specifically, trade debtors, inventory, and trade credit – have an insignificant or at most a trifling effect on corporate performance, for a set of nonfinancial listed firms in all six GCC countries. The results are robust to the econometric model, the profitability measure, and the country. This is probably because most GCC corporate managers have no concern about being financially constrained, which leads to less attention to aligning the optimal levels of working capital with the daily financing needs. Most firms in Gulf Cooperation Council (GCC) countries receive generous subsidies from their governments as part of lavish payments, in order to carry out development projects and other services for governmental agencies. The results of this study should be of great importance to GCC corporate managers and investors. Originality/Value – The study contributes to the literature by demonstrating that different cultural managerial practices might skew the already-established association among the financial variables and, hence, bring up new evidence. Also, the study implicitly suggests that further research in this area could reveal additional anomalous findings.

to reduce stocks before drastic price cuts become imperative.
A study by Duggal and Budden (2015) on the largest S&P 500 US health care firms, over the period [2009][2010][2011][2012], documents that about 45 percent of sales are (net) invested in trade debtors and inventory. Hence, a great proportion of a firm's funds constitute hidden reserves that can be otherwise exploited to finance growth plans. Similarly, firms all over the world do their best to manage their funding meticulously and sensibly so they are not forced to resort to any long-term expensive financing. That is, managers usually struggle to reach an optimal level of net investment in short term assets, to free up some cash that can be a readily available alternative to expensive financing. As a consequence, the better the firm's performance, the more valuable a firm will probably become.
However, different cultures dictate the different beliefs and attitudes of corporate managers, and their business practices may not be optimal due to those different business environments. For example, finance theory postulates that firm managers do their best to forecast the cash flows of their firms so they can line up funds well in advance. If they are likely to generate surplus cash, managers plan for its productive use. This optimal situation might change if managers have no concern about the level of cash they need (or they have) since the availability of cash can always be arranged either from the government (due to certain facilities) or by having an intimate connection with the banks they deal with. As a result, managers become unconcerned by the imperative need for financing operations in drastic times as they always have access to financing. Finance theory also postulates that managers should prudently monitor their inventory level so as to alleviate losing sales or excessively incurring carrying costs. However, if managers can secure sales with their customers by contracts (through a government tender), the level of inventory becomes less important as the sales are secured, and money will be collected effortlessly.

Figure 1
For more constructed figures, visit Hofstede Insights: www.hofstede-insights.com Similarly, the work of Lazarsfeld and Merton (1954) brings up "homophily", the sociological principle that as individuals feel more comfortable, they tend to behave in a way similar to people like themselves, but not like those of other countries. This suggests a shift in normative expectations with regard to the development of a benevolent attitude, such that managers' intentions and actions are interpreted similarly in confined cultures. That is, managers' affinity to their peer managers provides an appropriate environment that is conducive to mutual, personal understanding in the context of all kinds of management roles and responsibilities. Thus, other things being equal, this paper conjectures that managers who share more homophilous ties tend to display a higher propensity to share common practice. Hence, this tends to create a different managerial attitude that might distort the pre-established optimal business practices with respect to trade policies.
Based on the theoretical proposition of Hofstede (1983) and Lazarsfeld et al. (1954), this study investigates the relationship between trade debtors, trade credit, and inventory management efficiency and corporate profitability in different managerial settings, in GCC countries where the corporate sector depends highly on government supports and subsidies. That is, most firms in GCC countries prosper when the national budgets flourish due to a rise in the oil price (Alshammari, 2018). In each country, economic prosperity tends to boost government expenditures in terms of more development projects that are usually carried out by the private sector, and vice versa.
This study conjectures that as GCC governments embrace their private sector, firm managers might be less inclined to follow the universally accepted practices of optimal, short-term trade policies. Moreover, firms in GCC economies, being part of emerging markets, tend to be in the nascent stage of their product life cycle. Because of that, they may not always be inclined to adopt optimal corporate trade policies, due to operational and temporal financial constraints. This conjecture contradicts the evidence of Allen et al. (2012) that, as firms in emerging markets tend to face intense competition from the stronger business concerns in developed markets, it becomes imperative for those firms to manage their trade policies astutely.

Literature Review and Hypothesis Development
Several studies examined the relationship between the optimal level of trade debtor/credit and inventory and firm performance. Two distinct features tag most of the previous studies. First, most of these studies focus on the developed economies that are characterized by both a large number of firms and the big size of these firms. Very few studies are devoted to smaller sized firms in developing countries. Second, most of these studies assert a direct association between the optimal management of trade debtor, trade credit, and inventory, and firm performance measured either on an accounting basis (ROA, ROE, return on sales, etc.) or on a market value basis (e. g. Tobin's Q). Shin and Soenen (1998) analyze the association between the net trade cycle and profitability for 2,950 US companies during the period 1975-1994. Their findings support a negative correlation between a corporation's net trade cycle and its accounting and market-based performance. Their findings place the emphasis on creating shareholder value by efficiently managing both trade debtor and trade credit. Long Term Orientation Deloof (2003) examines the relationship between the cash conversion cycle and firm performance for 1,009 large Belgium nonfinancial firms during the period 1992-1996. He documents a negative linear relationship between gross firm operating income and trade debtor, trade credit, and the optimal level of inventory.
In a study of the relationship between cash conversion cycle and corporate performance for more than 8,000 Spanish SMEs during the period 1996-2002, Teruel and Solano (2007 document a direct and significant relationship between the optimal policies of trade debtor and trade credit and corporate performance. Cristea and Cristea. (2016) analyze the relationship between the cash conversion cycle and return on sales for all manufacturing firms listed on the Bucharest stock exchange from 2011 to 2015. The results of their panel data analysis indicate a negative and statistically significant relationship between the cash conversion cycle and firm profitability.
In investigating the relationship between firm performance (ROA and firm value) and cash conversion cycle for the 10 years 2003-2012 for firms listed in Johannesburg stock exchange, Oseifuah and Gyekye (2017) document an insignificant relationship between cash conversion cycle and the ROA. Barjaktarovic, Latinovic and Milosavljevic (2014) employ a correlation analysis to examine the relationship between profitability and liquidity measures for 51 listed Serbian firms. They report a negative correlation between ROA and both trade debtors and trade credit. They also document an insignificant relationship between the cash conversion cycle and ROA. Enqvist, Graham, and Nikkinen (2014) analyze the relationship between the cash conversion cycle and ROA for 1,136 firm-year observations for Finnish firms. They document that the cash conversion cycle and trade debtor relationship is more pronounced during economic downturns relative to economic booms. Wasiuzzaman (2015) examines the influence of short-term trade policies on firm value when there are financial constraints. His data spans the period 1999-2008 and includes all nonfinancial Malaysian firms. He finds that the efficiency of corporate trade policies leads to higher firm value.
Botoc and Anton (2017) analyze the effect of working capital management on the profitability of high-growth firms in Europe during the period of 2006-2015. They employ different quantile regressions, different sub-samples, different indicators of profitability, and document a significant relationship between profitability and the efficiency of working capital management. Linh and Mohanlingam (2018) investigate the association between the cash conversion cycle and firm profitability for a sample of 34 agricultural and food Thai firms during the period 2009 -2013. They find the cash conversion cycle, as well as its component the production cycle, to be inversely related to firm profitability. The payment cycle has positive relation with profitability while collection cycle has insignificant relationship with firm profitability.

Hypothesis
Given the above literature and the distinct GCC business environment, this paper hypothesizes a trivial relationship between trade debtors, trade credit, inventory management and corporate performance, for all nonfinancial GCC listed firms. This conjecture is contrary to the theoretical predictions of the working capital theory as well as to the empirical findings worldwide, as explained above in the literature review.
However, this hypothesis is founded on the different and distinct cultural attributes of GCC corporate managers, as well as the economic environment that is usually rich in government subsidies. Besides, the underdeveloped GCC capital markets coupled with the short investment history in these marketsthe oldest GCC stock market is the Kuwait stock exchange which was established officially in 1984have resulted in investor illusion with respect to the business and investment risk. Hence, the practices of corporate managers might not reflect properly on firm values, so, there tends to be no clear-cut and vibrant link between efficient business practices and firm performance represented by Tobin's Q.
Therefore, the following hypothesis is formulated: Hypothesis: There is a significant relationship between trade debtors, trade credit and inventory policies, and corporate performance for all nonfinancial firms in the GCC countries.

Methodology
Given that this paper intends to investigate the relationship between trade as well as inventory policies and firm performance, the following model is to be tested:

Performance = f {short-term corporate trade and inventory policy measures + control variables}
As in Alshammari (2018), two widely utilized measures of performance are employed. The first is the return on assets, ROA, which is an accounting measure (the operating income divided by total assets); the second measure is Tobin's Q (a market-based measure), which is depicted by the following formula:

TQ = (MVE + TA -EQ) / TA
where MVE is the product of (year close) stock price by the number of common stocks outstanding, TA is the year-end book value of total assets, and EQ is the year-end book value of equity. This ratio is used in other studies such as David Hyland (1997) and Chung and Pruit (1994) who document that this ratio of Tobin's Q has about 96 percent correlation with Q of Lindenberg and Ross (1981).
To control for corporate performance, the debt ratio (total debt divided by total assets) and firm size (log of sales) are to be employed.
Several regression methods are employed for robustness. These include the pooled regression methods (fixed effects and variable effects) and the generalized method of moments (the GMM method). In order to further support the results, the quantile regression will also be employed due to its distinct statistical properties, where its results divulge a more comprehensive picture of the different effects of trade and inventory policies on corporate performance.
Trade debtors represent cash that is to be paid by customers who have purchased goods/services on account from a firm. Trade creditors, on the other hand, characterize any customer/supplier from whom a firm has purchased on account and hence is owed to. Managing the day-to-day cash cycle of trade debtors and creditors is important for every firm since it ensures a sustainable business (ceteris paribus). If a firm pays its creditors before it collects from its debtors, then a firm most likely faces short-term capital constraints that need to be resolved.
Therefore, for the variables of interest, and following the related literature, three measures of trade policies are to be employed:  The trade debtors' variable is proxied by the "days in account receivables" which is the number of days it takes to collect accounts receivable. This variable signals the magnitude of cash invested in trade debtor and is measured as follows:

ARP = accounts receivable / daily sales
 The inventory management efficiency is proxied by the "days in inventory" which reflects the period of turning inventory into sales. This variable designates the magnitude of cash invested in inventory and is measured as follows:

IP = inventory / daily sales
 Trade credit variable is proxied by the "days in accounts payable", which is the average time that a company takes to pay its bills and invoices to its trade creditors. This variable indicates the magnitude of cash invested in trade credit and is measured as follows:

Data
To be included in the sample of this study, a firm must be: (a) a listed firm in the stock exchange in its GCC country.
(b) a nonfinancial GCC firm, and (c) a going concern, hence, have financial data during the period of the study, 2011 -2016.
All financial data are from Thomson Reuters, a well-known and widely used commercial database. To standardize the reference and ensure comparability, all figures are in US dollars. Applying the above three criteria results in 943 firms out of 1,041 in the related database. Table 1 includes summary statistics of some variables that are employed to draw the analysis. The GCC corporate mean value of net income is $106 million, while the median GCC firm makes $US 22.3 million of net income. The mean value of assets size is about $US 660 million, while the average debt to asset ratio of the GCC nonfinancial firms is about 40 percent. Tobin's Q mean value is almost 1.6.
To show comparison by subgrouping numbers in the GCC countries (statistics are suppressed to save space), the biggest firms are the Saudi firms in terms of total assets while the smallest firms are the Omani firms. Tobin's Q is the largest for Kuwait firms (=2.8), while it is the lowest in Bahrain (=98 percent), followed by Saudi (=2.02). The most indebted firms are in Emirates with a mean debt ratio of 56 percent versus only 27 percent (lowest) in Bahrain.
Table 1 also shows that the mean value of the accounts receivable period is 79 days for GCC firms. This means that, on average, a GCC nonfinancial firm collects its receivable about every 80 days. This is considered relatively an average when compared to the 54 days for the Belgium firms (Deloof, 2003), the 67 days for UK firms (Thuvarakan, 2013), the 148 days for Greece firms (Lazaridis et al., 2006); and the 103 days for Singaporean firms (Mansoori et al., 2012). of assets NI is net income; DR is debt ratio; Tob Q is Tobin's Q; ARP is accounts receivable period; IP is inventory period; APP is accounts payable period; Cash% is cash percentage of assets; AR% is accounts receivable percentage of assets; Inv% is inventory percentage of assets; AP% is accounts payable percentage of assets.
The inventory period of the GCC nonfinancial firms is almost 65 days. That means that a GCC firm, on average, exhausts its inventory every 65 days, which is almost comparable to the 60 days of UK firms (Thuvarakan, 2013), and the 59 days for Thai firms (Linh 2018), but less than the 110 days documented by Mansoori et al. (2012) for Singaporean firms, and the 137 days for the Greece firms reported in Lazaridis et al. 2006). The account payable period of 41 days is relatively low for the GCC firms when it is compared to the 96 days for Greece firms (Lazaridis et al. 2006) and 79 days for the Singaporean firms (Mansoori 2012). Table 1 also includes the components of the current asset as a percentage of total assets. For example, the accounts receivable and inventories account for about 14 percent and 12 percent, respectively, of total assets, which is relatively lower than those for Belgium firms (17 percent and 10 percent, respectively, as documented by Deloof (2003)). The accounts payable is almost 8 percent of total assets for the GCC firms, while it is 13 percent for Belgium firms. Hence, it is evident that the mean value of the components of the current asset and the trade policy proxies is relatively lower than those that are reported in the literature.

Correlation Analysis
To visualize the relationship among the studied variables, table (2) shows the results of the Pearson correlation among trade debtors, trade credit, debt level, profitability, Tobin's Q, and inventory period. From table (2), none of the variables have a correlation of more than 27 percent (about 50 percent is the cut-off rate), which negates the multicollinearity problem among the study variables. Also, the table shows a negative correlation between each of the trade policy proxies and the accounting profitability measure as well as with the size variable of the GCC firms. On the other hand, a positive relationship exists between Tobin's Q (a market performance measure) and the number of days a firm takes to pay its payables. Moreover, the relationship between the trade policies themselves is low. The result in Table 2 implies illogical form of relationships for some of the variables. For example, the theory of the working capital calls for a positive relationship between trade credit and firm performance, while it is negative with respect to ROA, but not with Tobin's Q. Also, the trade debtor proxy has a negative correlation with firm profitability and Tobin's Q, which is against the postulates of the working capital theory and the empirical evidence. In addition, the low correlation among the three trade policy proxies might indicate a dearth in conducting an effective short-term financial planning. All in all, these preliminary unformal results imply startling study results. 1 TQ is Tobin's Q = (market value of equity + total assets -equity) / total assets; Prof is profitability = operating income / total assets; APP is accounts payable period = accounts payable / (Sales / 365); DR is debt ratio = debt / total assets; Size = log (sales)

Results and Discussion
This paper investigates the relationship between corporate performance and the efficiency of managing trade debtor, trade credit, and inventory. Table (3) shows the effects of the accounts payables period (a popular measure of trade credit management efficiency), the inventory period (a popular measure of inventory management efficiency), and the accounts receivable period (a popular measure of trade debtor management efficiency) on corporate performance for a set of GCC nonfinancial firms.
The first set of regressionsthe fixed-effect model, the variable effect model, and the pooled modelemploy Tobin's Q as the performance measure. The second set of regressions are similar to the first set, but the performance measure employed is the operating income divided by total assets. The GMM estimator comes as the last regression model and it employs Tobin's Q as the performance measure. In panel (A), all regression models show, as conjectured by the paper, that there is either insignificant effect of the accounts payable period on both Tobin's Q and profitability, or at best, there is a trivial effect of the trade credit on corporate performance.
Specifically, when employing the accounting profitability measure, none of the regression models show a significant effect of trade credit on GCC corporate performance (all p-values are above 50 percent). However, when employing Tobin's Q as the performance measure, there seems to be a significant effect of the trade credit on firm performance, although that effect is very minimal, as the coefficient is almost zero. This result comes at odds when compared (for example) with that of Deloof et al. (2003) where the coefficient of trade credit is 0.54 and the coefficient of the number of days in inventory is 0.25. So, an increase in APP by one day would result in an increase by only 0.0001 (i.e., 0.01 percent) in Tobin's Q. Regressing the performance measure on only APP, without the control variables, does not change the result in terms of the correct sign, the statistical significance, and the minimal magnitude of the effect, for both sets of regressions.
Following Teruel et al. (2007), one estimation problem that might be relevant is the potential violation of the assumption of strict exogeneity of regressors. Shocks affecting firm performance can also affect some of the regressors such as leverage and firm size. Moreover, it is likely that some of the regressors may be correlated with the past and current values of the idiosyncratic component of disturbances. These problems advocate the use of instrumental variables (IV) estimation method, where the lagged dependent variable and endogenous regressors are instrumented using an appropriate set of variables. To do so, the GMM method of estimation is employed, which provides consistent parameter estimates (see Arellano and Bond, 1991).
Remarkably, employing the GMM model does not change the previous results in terms of the insignificant effect of APP on Tobin's Q. Both control variables (firm size and debt level) retain their expected sign and significance level which conforms to the related literature. That is, the effect of the debt ratio on corporate performance is negative as it is considered a financial burden. Also, the positive sign of firm size is expected, since large firm size tends to boost firm profitability. To sum up, the results so far partially support the conjecture of this study that the influence of trade credit management efficiency on corporate performance in GCC countries is weak at best. Examining the over-identifying restrictions and whether the employed instruments in the GMM model are independent of the unobservable error process, the Hansen (1982) J-statistic is employed, where its value accepts the orthogonality assumption which indicates the validity of the chosen instruments. Furthermore, the serial correlation test of AR(1) and AR(2) (Arellano and Bond 1991) confirms the inexistence of the serial correlation in the error terms, hence, the moment conditions are correctly specified. TQ is Tobin's Q = (market value of equity + total assets -equity) / total assets; Prof is profitability = operating income / total assets; APP is accounts payable period = accounts payable / (Sales / 365); DR is debt ratio = debt / total assets; Size = log (sales); Numbers between parenthesis are probability values testing the hypothesis the coefficient is zero (p-value); Since we have a cross-sectional data, heteroscedasticity was found to be significant. And since it is of unknown form, it was corrected by using White's (1980) consistent covariance matrix. For the GMM estimation method, (a) Tobin's Q is employed as a performance measure, and (b) the weighting matrix is cross-section by white covariance and the Newey west fixed bandwidth are employed. Lagged values of the variables are used as instruments. The Hansen (1982) J-statistic as well as the serial correlation test of AR(1) and AR(2) of Arellano and Bond 1991 are carried out and their figures and saved for brevity. Table 3 demonstrates the results of regressing corporate profitability on the inventory period and the control variables for all nonfinancial GCC firms. Employing different regression tests, the results, overall, show that the effect of inventory period on corporate performance is very inconsequential or insignificant and sometimes does not hold the predicated sign.

Panel (B) in
For example, when considering the fixed effect regressions on both performance measures, the effect of the inventory period appears to be significant (at 5 percent significance level), however, the magnitude of the effect is trivial (= 0.0001). Also, it does not hold the correct sign. Other regressions also show the insignificant effect of inventory period on profitability and market value of firms in GCC countries. The influence of the control variables, in total, appears to be valid, and in line with the theoretical propositions in the literature.
Panel C, in Table (3), shows the results of testing the effect of the trade debtors on corporate performance in GCC countries. Analogous to the findings in panels A and B, the effect appears to be insignificant. Although it is significant in two cases, the magnitude of the effect is very minimal and, in one case, does not hold the correct sign. For example, the variable model shows that if the ARP declines by 1 day, the operating income on assets tends to rise by 0.0001 (i.e. 0.01 percent), which is numerically (in magnitude) insignificant. The control variables retain their validity in almost all models.
Again, the GMM estimation method is carried out to consider the probable endogeneity problem which might skew the previous results. The GMM method results are contained in the last column in Table 3. All relative variables are regressed against Tobin's Q. The results of the GMM almost confirm what the previous models have already established, in that the effect of trade debtor, inventory policy, and trade credit on firm performance in GCC countries is at most very minimal or, in most cases, insignificant.
Two notable remarks before this section is wrapped up. First, when the related variables are regressed against operating return on assets using the GMM procedure, the results are similar to those of Tobin's Q, hence, they are retained for brevity. Second, another regression was carried out that tests whether there are any differences in results with respect to each of the firms in each GCC country. The test results show a very similar conclusions to those in the Table (3) concerning the effect of each of the related variables on corporate performance, hence, all results are concealed for brevity reasons.

A Robust Check
One important validation to the previous results is a distinct statistical method that considers the different effects of trade policies across the spectrum of firm performance. This provides a better characterization and description of the available data. The quantile regression method considers and estimates the complete heterogeneous conditional distributions of the firm performance variable. Also, it is robust to the outliers as it fits several percentiles (i.e., 90 th , 50 th , 20 th , …. etc.). All in all, the quantile regression serves an important and essential purpose by giving a more comprehensive picture of the different effects of the trade debtors, inventory policy, and trade credit on firm profitability. Table 4 includes the results of the quantile model under different values of "Tau" that are picked subjectively but meant to represent the complete spectrum of the values of Tobin's Q. 0.04 0.02 0.03 0.06 Tau value represents the relative quantile; Tobin's Q = (market value of equity + total assets -equity) / total assets; APP is accounts payable period = accounts payable / (Sales / 365); DR is debt ratio = debt / total assets; Size = log (sales); Numbers between parenthesis are probability values testing the hypothesis the coefficient is zero (p-value); Estimates use bootstrap method for computing the covariance matrix, with individual sparsity estimates obtained using kernel methods. The bandwidth uses the Hall and Sheather formula. All estimations identify unique optimal solution.
Panel A of Table 4 shows the effect of trade credit on Tobin's Q. The results are analogous to those in Table 3 in that the effect of the trade credit is insignificant on Tobin's Q, even when using different quantiles (i.e., 10 percent, 30 percent, 50 percent, and 90 percent). Panels B and C of Table 3 show the results of testing the effect of the inventory policy and the trade debtors on firm value. All in all, the results show the insignificant influence of the trade policies on Tobin's Q for all nonfinancial firms in the GCC countries.
For the control variables, they all retain their significance level and the correct sign according to the theoretical propositions. Results with respect to the accounting profitability performance measure (operating income/total assets) are very similar with respect to the significance level, hence they are retained to save space. All in all, the results in Table 4 also confirm the conclusions from previous results for firms in GCC countries in that there is an insignificant effect of the trade debtors, inventory period, and the trade credit on the GCC corporate performance.

Discussion of the Results
The above results contradict both the working capital theory propositions and the previous empirical evidence brought up by researchers worldwide. See for example Lazaridis et al. (2006), Mansoori et al. (2012, Deloof (2003), Abdulrahman et al. (2010), and Wasiuzzaman (2015). On the other hand, very few studies have partial support for the results of this study (Oseifuah (2013) and Barjoktarovic (2014). Although the working capital theory reveals strong connection between corporate performance and efficient trade policies, it seems to be short with respect to the interpretation of the weak or absent association between the two. As a result, and due to little existing research about GCC businesses that the study could draw on, advocated, and educated arguments have to be introduced. Tables 3 and 4 relates basically to what Hofstede (1983) and Lazarsfeld and Merton (1954) put forth, in that different business settings lead to different managerial practices and attitudes due to some country-specific merits. The business environment in GCC countries is such that GCC governments tend to shelter the private sector, including all business concerns, by providing lavish subsidies, especially to listed firms. Halaoui et al (2017) confirm that governments across the GCC countries dominate the economy and that GCC states heavily embrace and bolster their private-sector involvement in their economies by billions of dollars every year. Also, according to an IMF "Policy Consultation" report (1996), subsidies in GCC countries have evolved over the years with a broad objective of mainly supporting private sector (listed firms). The most common forms of the lavish subsidies are tax exemption (GCC economies are tax-free), subsidized costs of utilities, possession of free lands, and the most important are the constant business tenders, to the point that GCC firms often merely function as intermediaries for foreign companies, who provide most of the actual goods and services demanded (Hertog 2013). This results in creating an environment where corporate managers become unconcerned about financial constraints. One consequence is that corporate managers consider trade policies to be of less importance. That is, the mindset of GCC firm managers is predisposed to adopt a practice through which they can receive ample and quick financing when their firms face short-term financial constraints, as they expect over-the-top support from government in the form of acceptance of lavish bids, which can be extremely helpful in resolving short-term financial constraints. Hence, instead of worrying about optimally managing short-term trading policies (trade debtors, inventory, and trade credit) to assist in providing short term financing, managers tend to solicit hidden financial support from over-generous governments, and that support is considered to be continuous inexpensive short-term (and long-term) financing. Therefore, managing short-term trade policies efficiently becomes less enviable. The end result would be a negligible association between trade policy proxies and corporate performance, as the results in Tables 3 and 4 show. This conjecture is supported by what Nobanee et al. (2015) find that the net trade cycleone measure of trade policieshas a negligible impact on the corporate performance of small construction firms in Kuwait. Almazari (2014) also documents an insignificant relation between working capital management, proxied by the ratio of cash conversion cycle, and the corporate performance of the Saudi cement firms.

First of all, it is probable that the main line of reasoning behind the distinct results in
The above scenario of the GCC business setting leads to the second practical argument, which is the reduced need to practice the optimal financial procedure with respect to having a forecasted financial plan, i.e., to provide the usual cash budget and proforma financial statements. The support of this argument comes from the empirical evidence provided by Hertog (2013) who shows that most publicly listed GCC companies are often not run in line with international standards of corporate management. Also, Almutairi et al. (2009) document that Kuwaiti nonfinancial firms are deficient in applying the financial management planning tools in many aspects, indicating a lack of proper financial planning. This distinct environment could result in driving the values of the current assets (hence trade polices) to be most likely swinging up and down, which would probably render their association with corporate performance negligible, if any.
In relation to the second argument, the third argument is that financial constraints are not of concern to GCC corporate managers, who, consequently, do not see a necessity for developing financial planning tools. This is due to two reasons. The first relates to the provision of lavish financing from the government. The second lies in the fact that GCC banks exceedingly practice "relationship lending"as opposed to focusing exclusively on "fundamental and cash-flow analysis"where repeated interaction with corporate borrowers enables GCC banks to adapt lending terms accordingly. This is in line with the "helping hand" hypothesis which stresses the role of "relationship lending" in facilitating short-term financing (Chemmanur and Fulghieri, 1994). Sette and Gobbi (2015) also document that companies with extended lending relationships have easier access to credit at lower lending cost. In fact, GCC countries are bank-oriented systems when it comes to corporate financing (bonds issues are highly uncommon) with instant access by the GCC firms to the highly capitalized banks (Alshammari, 2017). All in all, the close relations of corporate managers with bankers ensures ample financing once needed. Furthermore, most banks in the GCC countries are owned by GCC governments as well as by connected ownership of families. The research on the degree to which financial decisions are influenced by the ownership of families is vast (see for example Kim et al. (2019). All this creates a state in which corporate managers have no concern to financial constraints, hence, the optimal financial practices with respect to trade policies becomes of less important.
The fourth argument relates to the relatively recent establishment of stock exchanges in the GCC countriesmost of the GCC stock exchanges were established in the eighties. Hence, the capital market role in economic development is not completely realized by stock market investors, who, consequently, have misconceptions about the effect of working capital management on firm value. Because of this, a measure of Tobin's Q does not appear to capture the theoretical and empirical relation between trade policy proxies and corporate performance. Partial support for this argument comes from studies of market efficiency in some of the GCC stock exchanges in that investor consciousness and awareness of the factors that should affect market value are lacking (Andrew et al., 2004). Similarly, Abuzayed (2012) documents that financial markets sometimes fail to penalize managers for inefficient working capital management in emerging markets, and he finds an insignificant relation between Tobin's Q and the cash conversion cycle, which is a measure of working capital management.

Conclusion and Policy Implications
This paper investigates the effects of short-term corporate trade policies on corporate performance for all nonfinancial firms in the six GCC countries, namely, Kuwait, Saudi Arabia, Bahrain, Qatar, Emirates, and Oman. This research was carried out by exploring the magnitude of the association between corporate performance and three proxies of corporate trade policies: trade debtors, trade credit, and inventory policies.
Using panel data methods as well as GMM and quantile regressions, the results found are distinctive as they oppose the mainstream theoretical propositions that have been established in empirical finance research. Specifically, this paper upholds a very weak, if any, relationship between corporate trade policies and corporate performance for all nonfinancial firms in the six GCC countries. The different empirical tests in this paper demonstrate an ascetically insignificant relationship between corporate short-term trade policies and corporate accounting and market performance. In the very few cases where the relationship turns out to be significant, the extent of the relationship can best be described as frail or minimal. The effect of the control variables, the debt ratio, and the firm size appear clearly to conform to the vast theoretical predictions and follow the majority of the related empirical studies.
The results of this paper confirm the work of Hofstede (1983) that the predictive power of the theoretical propositions with respect to the influence of trade policies in creating value might differ in different settings and environments. Business practices and norms, as well as corporate cultures, could affect test results. GCC countries represent an alliance that is part of emerging markets, hence, the different business norms and values may push investors to be less than perfect in their evaluation of the relationship between firm market value and short-term trade decisions. The test results might represent anomalous evidence or an irregularity in financial markets that tend sometimes to fail to penalize inefficient managers with respect to their negligence of efficient short-term trade policies.
Although the theory and the empirical evidence in different parts of the world are in consensus regarding the effect of trade policies on corporate profitability, this study finds that the effect appears to be susceptible to the GCC corporate sector, as part of the emerging markets. Therefore, nonfinancial firm managers in GCC countries need to pay close attention to more efficient short-term trade policies in order to improve or boost the shareholders' wealth. Managers can create additional profits for their firms by correctly handling the trade policies and keeping each different component (accounts receivables, accounts payables, inventory) at its optimal level. For example, GCC corporate managers can improve profitability by reducing the credit period granted to their customers, avoiding pilling the inventory for long period of time, and prudently stretching the time of paying their bills. As a whole, the results in this paper repudiate the main hypothesis which predicts positive and significant effects of corporate trade policies on corporate profitability.
The results of this study imply significant corporate policies. Due to the huge investments of GCC firms in working capital, corporate managers should emphasize the importance of maximizing the benefits of that working capital to their shareholders. Having a proper amount of working capital items, such as cash and inventories, alleviates the need of firms to resort too frequently to expensive external finance.

Limitations and Recommendations
As this study documents new evidence, a valid limitation on this study is stipulated by other variables that could not be employed, due to their unavailability in the related database. Variables such as other performance measures (e.g. the stock excess return adjusted for firm size and market to book value) as well as some risk factors, could lay their effects on the observed results. That is, changes in firm risk could be a plausible explanation for the increase in firm performance following a working capital decrease/increase. By the same token, the positive/negative effects of working capital could be significant if the release of cash is deemed as this might allow firms to undertake more profitable investments. Also, employing the positive or the negative net working capital concepts and relating that to the amount of capital investments may (or may not) shed more light on the observed findings. Besides, the style of managing working capital (aggressive vs. conservative) theoretically influences the firm risk, which then impacts the relationship between working capital and firm performance.