Abstract :
[en] This paper is the first attempt to assess the impact of official FOREX interventions
of the three major central banks in terms of the dynamics of the currency components
of the major exchange rates (EUR/USD and YEN/USD) over the period 1989-2003. We
identify the currency components of the mean and the volatility processes of exchange
rates using the recent Bayesian framework developed by Bos and Shephard (2006). Our
results show that in general, the concerted interventions tend to affect the dynamics of
both currency components of the exchange rate. In contrast, unilateral interventions are
found to primarily affect the currency of the central bank present in the market. Our
findings also emphasize a role for interventions conducted by these central banks on other
related FOREX markets.
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