Product diversification and bank risk: evidence from South Asian banking institutions

ABSTRACT

We investigate whether the product diversification activities of South Asian banking institutions have led to an increase or decrease in their solvency and profit risks. Using the data of five countries – India, Bangladesh, Nepal, Pakistan and Sri Lanka – for the period 2000–2016, we analyse the effect of both income and assets diversification activities on the Z-score and SDs of ROA (Return on Assets) and ROE Return on Equity). Among income diversification activities, securities trading income has a significant positive influence on bank risk while other categories have no influence. With respect to assets diversification, non-interest-bearing assets and loans given to government were found to have a significant positive influence on bank risk, while mortgage loans and non-classified loans have opposite influences. However, the impacts of securities trading income and loans given to the government are mainly confined to private sector banks and state-owned banks, respectively. We also uncover some country-specific diversification influences on the above relationships.     

Financial Deregulation and Economies of Scale and Scope: Evidence from the Major Australian Banks

In this study a parametric approach employing a flexible translog functional model is used to estimate economies of scale and scope in the four major Australian banks (ANZ, NAB, CBA and WESTPAC). Two hypotheses are tested to determine whether bank economies of scale have changed and also whether economies of scope were exhausted following financial deregulation. The analysis reveals that there is evidence for a continuing difference in banks' economies of scale as a result of deregulation. The empirical evidence also suggests that economies of scope were not exhausted by financial deregulation. In addition, there is continuing evidence of considerable economies of scope in the four major banks. In other words, Australian banks have not fully embraced deregulation and adjusted their joint production in a cost efficient manner. Findings in this study indicate that further deregulation would create a more competitive and efficient banking environment in Australia.     

Australian Specific Bank Features and the Impact of Income Diversification on Bank Performance and Risk

Since financial market deregulation, Australian banks have significantly diversified from a dependence on simple products such as interest‐bearing loans to a broader range of financial products services. Such initiatives have transformed the structure of the Australian banking industry and are destined to receive scrutiny following the announcement of Australia's financial services inquiry. Against the common view that attempts by firms to diversify can be expected to impact negatively on financial performance, we find no strong evidence to suggest that diversification has been unfavourable to the performance of Australian banks. We find rather that Australia's banks have improved their risk‐return profiles as an outcome of diversification.