Impact of working capital management on the performance of non-financial firms listed on the Johannesburg Stock Exchange (JSE)

Abstract

This is the first study to investigate the impact of working capital management on the performance (profitability and value) of South African firms listed on the Johannesburg Securities Exchange (JSE) before, during and after the 2008/2009 global financial crisis. Richards and Laughlin’s (1980) Cash Conversion Cycle (CCC) theory was used as the theoretical framework for analysing and linking working capital management to firm performance. In addition, the study investigates how the separate working capital management components impact the performance of firms. The study used both accounting and market based secondary data obtained from I-Net Bridge/BFA McGregor database and the JSE for 75 firms for the 10 year period, 2003 to 2012. Panel data regression models were used in the analyses. The key findings from the study indicate the following. First, the average profitability (ROA) for the sample firms decreased from 27% (before the financial crisis) to 20.2% during the crisis period and increased to 25.9% after the financial crisis. Second, the average market capitalisation (firm value) decreased from R18.9 billion before the crisis to R16.3 billion during the crisis period, and thereafter increased to a high of R24.4 billion after the crisis. Third, the average firm’s CCC was 28.4 days before the crisis and decreased to 12.5 days during the crisis period and later increased to 16.2 days after the crisis. Fourth, and interestingly, of the four working capital management variables, only accounts receivable conversion period is significantly negatively related to profitability during the financial crisis. Fifth, the three firm-specific variables (size, financial leverage, and current assets to total assets ratio) have no significant relation with profitability during the crisis period. Sixth, the external variable, change in GDP growth rate, has a significant positive relation with profitability. This suggests firms perform better when the economy is booming and otherwise during economic downturns, which is consistent with economic theory. Finally, and perhaps the most important contribution is that the study found an inverted U-shape relationship between working capital management (proxied by cash conversion cycle) and firm value before the crisis. This implies that there exists an optimal level of investment in working capital for which the sampled firms’ value is maximized. At this point, costs and benefits are balanced. Thus corporate managers should aim to keep as close to the optimal level as possible and try to avoid any deviations from it that destroy firm value. On the contrary, the results have not established any such relationship between working capital management and profitability for any of the three financial crisis periods. Based on the findings, it is recommended that firm managers should aim at keeping as close to the optimal working capital level as possible and try to avoid any deviations from it that may destroy firm value.