Is Foreign Exchange Market Intervention an Alternative to Monetary Policy? Evidence from Japan
Japanese official intervention in the foreign exchange market is of by far the largest magnitude in the world, despite little or no evidence that it is effective in moving exchange rates. Up until recently, however, official data on intervention has not been available for Japan. This paper investigates the effectiveness of intervention using recently published official daily data and an exchange rate data, i.e. intense and sporadic bursts of intervention activity juxtaposed against a yen/dollar rate continuously changing, than standard time-series approaches. Focusing on daily Japanese and US official intervention operations, we identify separate intervention "episodes" and analyze the subsequent effect on the exchange rate. Using the non-parametric sign test and matched-sample test, we find strong evidence that sterilized intervention systematically affects the exchange rate in the short-run. This result holds even when intervention is not associated with (simultaneous) interest rate changes and regardless of whether or not intervention is "secret" (in the sense of no official reports or rumors of intervention reported over the newswires). To some extent intervention might be a useful policy instrument during the zero-interest rate policy period in Japan, effectively depreciating the value of the yen exchange rate (the "foolproof" policy proposed by Svensson, 2001), but the effects are likely to be short-term in nature.
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- Takatoshi Ito, 2002.
"Is Foreign Exchange Intervention Effective?: The Japanese experiences in the 1990s,"
Discussion Paper Series
a428, Institute of Economic Research, Hitotsubashi University.
- Takatoshi Ito, 2003. "Is foreign exchange intervention effective? The Japanese experiences in the 1990s," Chapters, in: Monetary History, Exchange Rates and Financial Markets, chapter 5 Edward Elgar Publishing.
- Takatoshi Ito, 2002. "Is Foreign Exchange Intervention Effective?: The Japanese Experiences in the 1990s," NBER Working Papers 8914, National Bureau of Economic Research, Inc.
- Maurice Obstfeld & Kenneth S. Rogoff, 1996. "Foundations of International Macroeconomics," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262150476, September.
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