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The spillover effects among offshore and onshore RMB exchange rate markets, RMB Hibor market

1 School of Economics and Commerce, South China University of Technology, Guangzhou 510006, China
2 Business School, Durham University, Durham DH1 3LB, United Kingdom
3 Guangzhou Branch, Bank of China, Guangzhou 511430, China

We investigate the return and volatility spillover effects among the onshore and offshore RMB foreign exchange markets, offshore RMB money market before and after the foreign exchange rate reform on August 11, 2015. We found that “8.11” exchange reform significantly affects the interactions in CNY, CNH and CNH-Hibor three markets. The two-way CNY-to-CNH return spillovers became one-way and in the opposite direction after the reform. The Granger causality test shows price-guide impacts in pairs of CNY, CNH and CNH-Hibor were significantly different after the “8.11” reform. The pricing power of RMB spot exchange rate has been passed from onshore market to offshore market. Meanwhile, the unidirectional volatility spillover from CNH to CNY has changed to bidirectional volatility spillover between CNH and CNY markets. Meanwhile, after the “8.11” reform, the fluctuation of CNH-Hibor impacts the volatility of onshore and offshore exchange rates significantly, CNH-Hibor played a leading role in onshore-offshore foreign exchange and offshore money market interactions. These results are critical for Chinese policymakers and contribute to China’s foreign exchange rate reform.
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