Investigating the Influence of Shariah Compliance on the Level of Currency Exposure Across Time Scales: An Application of Wavelet Approach


  • Hishamuddin Abdul Wahab Universiti Sains Islam Malaysia


Currency exposure is defined as the risk where firm value is sensitive to changes in foreign exchange movement. Several studies have been devoted to measure the extent of foreign exchange exposure of Malaysian corporations. However, previous efforts have ignored the potential of Shariah compliance and time scale effects on the measurement. Motivated from these specification problems, the study investigated the influence of Shariah compliance on the level of multi-scale exchange rate exposure using the Maximal Overlap Discrete Wavelet Transformation (MODWT) approach. The study focused on a sample of 12 Shariah compliant firms (SCF) and 12 non-Shariah compliant firms (NSCF) listed under the Food and Beverage industry in Malaysia from July 2005 till August 2018. As a result, the study found that the level of Shariah compliance had a negligible impact on the level of exchange exposure. The study also found that the level of currency exposure increased from low to high time scale, indicating that widened investment intervals entail greater exchange risk for both SCF and NSCF. In terms of policy implication, the study infers that the SCF and NSCF share almost identical exchange risk profiles which uphold the law of one price. In fact, there is no basis to expect different risk management routines in dealing with exchange risk between the two groups. However, the study stresses the importance of incorporating the time scale factor in managing exchange risk for both groups.


Bartram, S. M., and Bodnar, G.M. Crossing the lines: The conditional relation between exchange rate exposure and stock returns in emerging and developed markets. Journal of International Money and Finance. 2012. 31: 766–792.

Adler, M., and Dumas, B. Exposure to currency risk: definition and measurement. Financial Management. 1984. 13:41-50.

Jorion, P. The exchange rate exposure of US multinationals, Journal of Business. 1990. 63:331-345.

Bacha, O.I., Mohamad, A., Syed Mohd Zain, S.R., and Mohd Rasid, M.E.S. Foreign exchange exposure and impact of policy switch. The case of Malaysian listed firms, Applied Economics. 2013. 45(20):2974-2984.

Abdul Wahab, H., Amir Hussin, M.A., Mohd. Nordin, N., Yusoff, Y.S., and Zainudin, W.N.R.A. Foreign Currency Exposure and Hedging Practices: New Evidence from Emerging Market of ASEAN-4. Advanced Science Letter. 2017. 23(5): 4939-4943.

Abdul Wahab, H. Does Foreign Currency Derivative affect the variation of currency exposure: Evidence from Malaysia. Advanced Science Letter. 2017. 23(5): 4934-4938.

Parsley, D.C., and Popper, H.A., 2006. Exchange rate pegs and foreign exchange exposure in east and South East Asia, Journal of International Money and Finance 25, pp. 992-1009.

Chen, C.C., and So, R.W., 2002. Exchange rate variability and the riskiness of US multinational firms: evidence from the Asian financial turmoil, Journal of Multinational Financial Management 12, pp. 411-428.

Wan Suhaimi, W. N., Abdul Wahab, H., and Md. Sum, R., 2019. Symmetric and asymmetric exchange rate exposure: Evidence from Malaysian non-financial firms, AIP proceedings 2138, pp. 050028.

Wan Suhaimi, W. N., Abdul Wahab, H., and Md. Sum, R., 2019. The time-varying exposure of Malaysian non-financial firms using panel and OLS analyses, AIP proceedings 2138, pp. 050029.

A. Wahab, A., Abdul Rahim, R., and Janor, H., 2018. Impact of Foreign Exchange Exposure and Syariah-Compliant Status on Firms’ Decision to Practice Hedging, SSRN paper.

Masih, M., & Alzahrani, M., and Al-Titi, O. Systematic risk and time scales: New evidence from an application of wavelet approach to the emerging Gulf stock markets, International Review of Financial Analysis. 2007. 19:10-18.




How to Cite

Abdul Wahab, H. (2021). Investigating the Influence of Shariah Compliance on the Level of Currency Exposure Across Time Scales: An Application of Wavelet Approach. MATEMATIKA: Malaysian Journal of Industrial and Applied Mathematics, 37(1), 1–13. Retrieved from