The effectiveness of the monetary policy in China: New evidence from long-range cross-correlation analysis and the components of multifractality

This study examines the long-range cross-correlations between the Chinese Renminbi (RMB) exchange rate and the Shanghai Interbank Offered Rate (Shibor) markets both on qualitative and quantitative basis, using a comprehensive dataset covering the period from October 8, 2006 to September 30, 2016. Our empirical results suggest that a nonlinear time-varying correlation exists between the markets. We also verify that the third stage of China's monetary policy reform from 2011 to 2016 had a greater influence on both small and large foreign exchange (FX) market fluctuations. Using the multifractality analysis, we conclude that China's monetary policy can significantly reduce the multifractality of cross correlations between the RMB exchange rate and Shibor rate markets, and that market efficiency in the third stage of policy reform is improved. Furthermore, the source of multifractality of cross-correlations is found mostly in the nonlinear correlation and fat tailed probability distribution (PDF) components. (C) 2018 Elsevier B.V. All rights reserved.