Dynamical Volatilities for Yen-Dollar Exchange Rates

Kyungsik Kim, Seong-Min Yoon, C. Christopher Lee and Myung-Kul Yum

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Abstract: We study the continuous time random walk theory from financial tick data of the yen-dollar exchange rate transacted at the Japanese financial market. The dynamical behavior of returns and volatilities in this case is particularly treated at the long-time limit. We find that the volatility for prices shows a power-law with anomalous scaling exponent k = 0.96 (one minute) and 0.86 (ten minutes), and that our behavior occurs in the subdiffusive process. Our result presented will be compared with that of recent numerical calculations.

Date: 2004-09
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Journal Article: Dynamical volatilities for yen–dollar exchange rates (2006)
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