NBER Publications by Kunio Okina

According to the efficient market hypothesis, news in Tokyo is responsible for the exchange rate changes during the Tokyo market hours, while the U.S. news is responsible for changes in the New York hours. The intra-daily dynamics of the $/yen exchange rate from December 1931 to November 1933 is analyzed. Japan's decision to go off gold in December 1931 depreciated yen by 30% in a month, mostly in the Tokyo market. During 1932, the yen depreciated another 30%, mainly due to Japan's aggression in China and resulting diplomatic isolation. In 1933, the yen appreciated against the dollar, mainly in the New York market, due to the U.S. decision to go off gold. However, exchange rate volatility and its sensitivity to news declined over the two year period, because of increasing capital controls....