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Time-Varying Volatility in the Foreign Exchange Market: New Evidence on its Persistence and on Currency Spillovers

  • Ibrahim Chowdhury
  • Lucio Sarno

We examine empirically the volatility of four major US dollar spot exchange rates using intraday data over 40 trading days. Using multivariate stochastic volatility models, we investigate the degree of persistence of exchange rate volatility for data sampled at different frequencies and the role of volatility spillovers across exchange rates. We find that the noise component of volatility 'aggregates out' very quickly, being dominated by the more persistent component of volatility for data sampled at 15-minute or lower frequencies. Our results also suggest that exchange rate volatility is very persistent and that cross-currency spillovers are small. Copyright Blackwell Publishers Ltd, 2004.

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Article provided by Wiley Blackwell in its journal Journal of Business Finance & Accounting.

Volume (Year): 31 (2004-06)
Issue (Month): 5-6 ()
Pages: 759-793

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Handle: RePEc:bla:jbfnac:v:31:y:2004-06:i:5-6:p:759-793
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